diff --git a/include/entity.h b/include/entity.h
index 9ab0aa64..a1dd6d93 100644
--- a/include/entity.h
+++ b/include/entity.h
@@ -5,19 +5,22 @@
 #include "global.h"
 #include "sprite.h"
 
+typedef enum {
+    PLAYER = 1,
+    ENEMY = 3,
+    PROJECTILE = 4,
+    OBJECT = 6,
+    NPC = 7,
+    PLAYER_ITEM = 8,
+    MANAGER = 9,
+} EntityType;
+
 typedef struct {
     void* entity1;
     void* entity2;
     u8 filler[14];
 } UnkStruct;
 
-typedef struct {
-    u8 type;
-    u8 subtype;
-    u8 form;
-    u8 parameter;
-} EntityType;
-
 typedef struct {
     s8 offset_x;
     s8 offset_y;
@@ -39,7 +42,10 @@ typedef struct {
 typedef struct Entity {
     /*0x00*/ struct Entity* prev;
     /*0x04*/ struct Entity* next;
-    /*0x08*/ EntityType entityType;
+    /*0x08*/ u8 kind; // was: type
+    /*0x09*/ u8 id; // was: subtype
+    /*0x0a*/ u8 type; // was: form
+    /*0x0b*/ u8 type2; // was: parameter
     /*0x0c*/ u8 action;
     /*0x0d*/ u8 previousActionFlag;
     /*0x0e*/ u8 actionDelay;
diff --git a/include/object.h b/include/object.h
index 5480a8a2..465ef064 100644
--- a/include/object.h
+++ b/include/object.h
@@ -4,6 +4,203 @@
 #include "global.h"
 #include "entity.h"
 
+typedef enum {
+    GROUND_ITEM,
+    DEATH_FX,
+    SHOP_ITEM,
+    BUTTON,
+    OBJECT_4,
+    POT,
+    OBJECT_6,
+    PUSHED_BLOCK,
+    LOCKED_DOOR,
+    OBJECT_9,
+    OBJECT_A,
+    OBJECT_B,
+    CHEST_SPAWNER,
+    OBJECT_D,
+    OBJECT_E,
+    SPECIAL_FX,
+    OBJECT_10,
+    OBJECT_11,
+    OBJECT_12,
+    RAILTRACK,
+    LILYPAD_LARGE,
+    OBJECT_15,
+    FLOATING_PLATFORM,
+    OBJECT_17,
+    EVIL_SPIRIT,
+    HOUSE_DOOR_EXT,
+    OBJECT_1A,
+    GREAT_FAIRY,
+    OBJECT_1C,
+    OBJECT_1D,
+    OBJECT_1E,
+    OBJECT_1F,
+    OBJECT_20,
+    OBJECT_21,
+    FIGURINE_DEVICE,
+    EYE_SWITCH,
+    OBJECT_24,
+    BIG_BARREL,
+    OBJECT_26,
+    PUSHABLE_STATUE,
+    OBJECT_28,
+    OBJECT_29,
+    OBJECT_2A,
+    OBJECT_2B,
+    BEANSTALK,
+    SMOKE,
+    PUSHABLE_ROCK,
+    HITTABLE_LEVER,
+    OBJECT_30,
+    OBJECT_31,
+    PULLABLE_MUSHROOM,
+    BOLLARD,
+    WARP_POINT,
+    OBJECT_35,
+    OBJECT_36,
+    OBJECT_37,
+    JAR_PORTAL,
+    BOSS_DOOR,
+    OBJECT_3A,
+    PORTAL_MUSHROOM_STALKS,
+    PORTAL_FALLING_PLAYER,
+    OBJECT_3D,
+    OBJECT_3E,
+    GIANT_LEAF,
+    FAIRY,
+    LADDER_UP,
+    OBJECT_42,
+    OBJECT_43,
+    OBJECT_44,
+    OBJECT_45,
+    GIANT_BOOK_LADDER,
+    HEART_CONTAINER,
+    FILE_SCREEN_OBJECTS,
+    OBJECT_49,
+    BACKGROUND_CLOUD,
+    OBJECT_4B,
+    PUSHABLE_FURNITURE,
+    FURNITURE,
+    MINISH_SIZED_ENTRANCE,
+    ARCHWAY,
+    GIANT_ROCK,
+    OBJECT_51,
+    OBJECT_52,
+    OBJECT_53,
+    PULLABLE_LEVER,
+    MINECART,
+    THOUGHT_BUBBLE,
+    HIDDEN_LADDER_DOWN,
+    GENTARI_CURTAIN,
+    LAVA_PLATFORM,
+    OBJECT_5A,
+    OBJECT_5B,
+    MASK,
+    HOUSE_DOOR_INT,
+    WHIRLWIND,
+    OBJECT_BLOCKING_STAIRS,
+    SWORDSMAN_NEWSLETTER,
+    OBJECT_61,
+    GIANT_TWIG,
+    OBJECT_63,
+    OBJECT_64,
+    LADDER_HOLE,
+    OBJECT_66,
+    OBJECT_67,
+    OBJECT_68,
+    OBJECT_69,
+    OBJECT_6A,
+    CRENAL_BEAN_SPROUT,
+    MINECART_DOOR,
+    OBJECT_ON_PILLAR,
+    MINERAL_WATER_SOURCE,
+    MINISH_SIZED_ARCHWAY,
+    OBJECT_70,
+    PUSHABLE_GRAVE,
+    OBJECT_72,
+    LILYPAD_SMALL,
+    OBJECT_74,
+    OBJECT_75,
+    OBJECT_76,
+    BELL,
+    HUGE_DECORATION,
+    OBJECT_79,
+    STEAM,
+    PUSHABLE_LEVER,
+    HUGE_SHOES,
+    OBJECT_ON_BEETLE,
+    OBJECT_7E,
+    PICO_BLOOM,
+    OBJECT_80,
+    OBJECT_81,
+    BIG_VORTEX,
+    BIG_PUSHABLE_LEVER,
+    SMALL_ICE_BLOCK,
+    BIG_ICE_BLOCK,
+    OBJECT_86,
+    OBJECT_87,
+    HUGE_BOOK,
+    OBJECT_89,
+    OBJECT_8A,
+    OBJECT_8B,
+    BOOK,
+    FIREPLACE,
+    OBJECT_8E,
+    FROZEN_WATER_ELEMENT,
+    OBJECT_90,
+    OBJECT_91,
+    BAKER_OVEN,
+    OBJECT_93,
+    WIND_TRIBE_FLAG,
+    BIRD,
+    OBJECT_96,
+    OBJECT_97,
+    OBJECT_98,
+    OBJECT_99,
+    HUGE_ACORN,
+    OBJECT_9B,
+    TREE_HIDING_PORTAL,
+    LIGHTABLE_SWITCH,
+    OBJECT_9E,
+    FAN,
+    OBJECT_A0,
+    PALACE_ARCHWAY,
+    OBJECT_A2,
+    CLOUD,
+    MINISH_LIGHT,
+    OBJECT_A5,
+    OBJECT_A6,
+    OBJECT_A7,
+    OBJECT_A8,
+    OBJECT_A9,
+    WATERFALL_OPENING,
+    OBJECT_AB,
+    FOUR_ELEMENTS,
+    OBJECT_AD,
+    FLOATING_BLOCK,
+    OBJECT_AF,
+    METAL_DOOR,
+    JAIL_BARS,
+    OBJECT_B2,
+    OBJECT_B3,
+    OBJECT_B4,
+    OBJECT_B5,
+    OBJECT_B6,
+    WELL,
+    WIND_TRIBE_TELEPORTER,
+    OBJECT_B9,
+    OBJECT_BA,
+    WINDCREST,
+    LIT_AREA,
+    OBJECT_BD,
+    PINWHEEL,
+    OBJECT_BF,
+    ENEMY_ITEM,
+    OBJECT_C1,
+} Object;
+
 extern void ItemOnGround(Entity*);
 extern void DeathFx(Entity*);
 extern void ItemForSale(Entity*);
diff --git a/src/arm_proxy.c b/src/arm_proxy.c
index 9771daa5..e18e4a1c 100644
--- a/src/arm_proxy.c
+++ b/src/arm_proxy.c
@@ -290,7 +290,7 @@ void ItemUpdate(Entity* this) {
         ItemInit(this);
 
     if (!sub_0805E3B0(this)) {
-        gPlayerItemFunctions[this->entityType.subtype](this);
+        gPlayerItemFunctions[this->id](this);
         this->bitfield &= ~0x80;
         if (this->hurtBlinkTime != 0) {
             if (this->hurtBlinkTime > 0)
@@ -306,7 +306,7 @@ void ItemUpdate(Entity* this) {
 NONMATCH("asm/non_matching/arm_proxy/ItemInit.inc", void ItemInit(Entity* this)) {
     ItemFrame* entry;
 
-    entry = &gUnk_08126DA8[this->entityType.subtype];
+    entry = &gUnk_08126DA8[this->id];
     if (entry->unk0 == 0xff) {
         u32 temp = entry->unk2;
         ItemFrame* temp2 = gUnk_08126ED8[entry->unk1];
@@ -343,7 +343,7 @@ void ObjectUpdate(Entity* this) {
     if (this->hurtBlinkTime != 0)
         this->hurtBlinkTime++;
     if (!sub_0805E3B0(this)) {
-        gObjectFunctions[this->entityType.subtype](this);
+        gObjectFunctions[this->id](this);
         this->bitfield &= ~0x80;
     }
     DrawEntity(this);
@@ -351,7 +351,7 @@ void ObjectUpdate(Entity* this) {
 
 void sub_08017508(Entity* this) {
     if (!sub_0805E3B0(this))
-        gManagerFunctions[this->entityType.subtype](this);
+        gManagerFunctions[this->id](this);
 }
 
 // regalloc
@@ -361,10 +361,10 @@ NONMATCH("asm/non_matching/arm_proxy/sub_08017530.inc", void NPCUpdate(Entity* t
     if ((this->action == 0) && ((this->flags & 1) == 0))
         sub_0806EC78(this);
     if (!sub_0805E3B0(this))
-        gNPCFunctions[this->entityType.subtype][0](this);
+        gNPCFunctions[this->id][0](this);
     if (this->next != NULL) {
-        if (gNPCFunctions[this->entityType.subtype][1] != NULL)
-            gNPCFunctions[this->entityType.subtype][1](this);
+        if (gNPCFunctions[this->id][1] != NULL)
+            gNPCFunctions[this->id][1](this);
         if ((this->currentHealth & 0x7f) != 0) {
             u32 temp = this->currentHealth & 0x7f;
             gUnk_02031EC0[temp * 2 - 2].x = this->x.HALF.HI - gRoomControls.roomOriginX;
diff --git a/src/code_0805436C.c b/src/code_0805436C.c
index 4e545cb6..76a9b18c 100644
--- a/src/code_0805436C.c
+++ b/src/code_0805436C.c
@@ -250,10 +250,10 @@ u32 CreateItemDrop(Entity* arg0, u32 itemID, u32 itemParameter) {
                 } else {
                     itemEntity->actionDelay = 0;
                 }
-                if ((arg0->entityType).type == 6) {
-                    if (arg0->entityType.subtype == 99) {
+                if (arg0->kind == 6) {
+                    if (arg0->id == 99) {
                         arg0->attachedEntity = itemEntity;
-                    } else if (arg0->entityType.subtype == 0x1e) {
+                    } else if (arg0->id == 0x1e) {
                         itemEntity->direction = arg0->animationState << 3 | 0x80;
                         itemEntity->nonPlanarMovement = 0xc0;
                         itemEntity->field_0x20 = 0x18000;
diff --git a/src/code_08077B98.c b/src/code_08077B98.c
index 83d0089b..c3fbf5dd 100644
--- a/src/code_08077B98.c
+++ b/src/code_08077B98.c
@@ -69,8 +69,8 @@ void* sub_08077C54(UnkItemStruct* unk) {
 
     item = sub_0805E744();
     if (item != NULL) {
-        item->entityType.subtype = gUnk_0811BE48[unk->field_0x1].unk[3];
-        item->entityType.type = 8;
+        item->id = gUnk_0811BE48[unk->field_0x1].unk[3];
+        item->kind = 8;
         item->flags = 0xa0;
         item->parent = (Entity*)unk;
         item->field_0x68.HALF.LO = unk->field_0x1;
@@ -95,10 +95,10 @@ Entity* CreatePlayerItem(u32 subtype, u32 form, u32 parameter, u32 unk) {
     ent = GetEmptyEntity();
     if (ent != NULL) {
         ent->flags = 0x80;
-        (ent->entityType).type = 8;
-        (ent->entityType).subtype = subtype;
-        (ent->entityType).form = form;
-        (ent->entityType).parameter = parameter;
+        ent->kind = 8;
+        ent->id = subtype;
+        ent->type = form;
+        ent->type2 = parameter;
         ent->field_0x68.HALF.LO = unk;
         AppendEntityToList(ent, 2);
     }
@@ -111,10 +111,10 @@ Entity* sub_08077CF8(u32 subtype, u32 form, u32 parameter, u32 unk) {
     ent = sub_0805E744();
     if (ent != NULL) {
         ent->flags = 0x80;
-        (ent->entityType).type = 8;
-        (ent->entityType).subtype = subtype;
-        (ent->entityType).form = form;
-        (ent->entityType).parameter = parameter;
+        ent->kind = 8;
+        ent->id = subtype;
+        ent->type = form;
+        ent->type2 = parameter;
         ent->field_0x68.HALF.LO = unk;
         AppendEntityToList(ent, 2);
     }
diff --git a/src/code_08077DF4.c b/src/code_08077DF4.c
index 7312ecd0..1697ecb0 100644
--- a/src/code_08077DF4.c
+++ b/src/code_08077DF4.c
@@ -15,7 +15,7 @@ typedef struct {
 void sub_08077DF4(Entity* ent, u32 arg1) {
     *(u16*)&ent->flags = arg1;
     if ((arg1 & 0xff) > 0xb8) {
-        arg1 += (ent->entityType).form >> 1;
+        arg1 += ent->type >> 1;
     }
     gPlayerEntity.spriteIndex = (short)(arg1 >> 8);
     InitAnimationForceUpdate(&gPlayerEntity, (u8)arg1);
diff --git a/src/createEnemy.c b/src/createEnemy.c
index 3b243e79..5ce7af89 100644
--- a/src/createEnemy.c
+++ b/src/createEnemy.c
@@ -9,9 +9,9 @@ Entity* CreateEnemy(u32 subtype, u32 form) {
 
     enemy = GetEmptyEntity();
     if (enemy != NULL) {
-        (enemy->entityType).type = 3;
-        (enemy->entityType).subtype = subtype;
-        (enemy->entityType).form = form;
+        enemy->kind = 3;
+        enemy->id = subtype;
+        enemy->type = form;
         AppendEntityToList(enemy, 4);
     }
     return enemy;
diff --git a/src/createEntity.c b/src/createEntity.c
index 7feff11b..e83312a1 100644
--- a/src/createEntity.c
+++ b/src/createEntity.c
@@ -28,7 +28,7 @@
 // (entity->entityType).form = param_1->entityform;
 // RegisterRoomEntity(entity,param_1);
 // if ((param_1->field_0x1 & 240) != 16) {
-// (entity->entityType).parameter = *(u8 *)&param_1->entityparameter;
+// (entity->type2 = *(u8 *)&param_1->entityparameter;
 // entity->actionDelay = (u8)((u32)param_1->entityparameter >> 8);
 // if ((type != 9) && (sub_0804AF0C(entity,param_1), entity->field_0x4 != NULL)) {
 // if ((param_1->entityType & 16) == 0) {
diff --git a/src/createNPC.c b/src/createNPC.c
index 3e11ba91..b8a30fdf 100644
--- a/src/createNPC.c
+++ b/src/createNPC.c
@@ -4,17 +4,15 @@
 extern Entity* GetEmptyEntity();
 extern void AppendEntityToList(Entity*, u8);
 
-Entity* CreateNPC(u32 subtype, u32 form, u32 parameter)
-
-{
+Entity* CreateNPC(u32 subtype, u32 form, u32 parameter) {
     Entity* pEVar1;
 
     pEVar1 = GetEmptyEntity();
     if (pEVar1 != NULL) {
-        (pEVar1->entityType).type = 7;
-        (pEVar1->entityType).subtype = subtype;
-        (pEVar1->entityType).form = form;
-        (pEVar1->entityType).parameter = parameter;
+        pEVar1->kind = 7;
+        pEVar1->id = subtype;
+        pEVar1->type = form;
+        pEVar1->type2 = parameter;
         AppendEntityToList(pEVar1, 7);
     }
     return pEVar1;
diff --git a/src/createObject.c b/src/createObject.c
index ad852900..62c67062 100644
--- a/src/createObject.c
+++ b/src/createObject.c
@@ -10,10 +10,10 @@ Entity* CreateObject(u32 subtype, u32 form, u32 parameter) {
 
     ent = GetEmptyEntity();
     if (ent != NULL) {
-        ent->entityType.type = 6;
-        ent->entityType.subtype = subtype;
-        ent->entityType.form = form;
-        ent->entityType.parameter = parameter;
+        ent->kind = 6;
+        ent->id = subtype;
+        ent->type = form;
+        ent->type2 = parameter;
         AppendEntityToList(ent, 6);
     }
     return ent;
diff --git a/src/enemy/acroBandits.c b/src/enemy/acroBandits.c
index 73212e2f..3344b5b5 100644
--- a/src/enemy/acroBandits.c
+++ b/src/enemy/acroBandits.c
@@ -47,14 +47,14 @@ void AcroBandit(Entity* this) {
 }
 
 void sub_080318C4(Entity* this) {
-    gUnk_080CE584[this->entityType.form](this);
+    gUnk_080CE584[this->type](this);
 }
 
 void sub_080318DC(Entity* this) {
     Entity* brother;
 
     if (this->bitfield != 0x80 && this->bitfield != 0x81) {
-        if (this->entityType.form == 1) {
+        if (this->type == 1) {
             if (this->action < 7 && this->field_0x42) {
                 brother = this->attachedEntity;
                 if (brother) {
@@ -85,13 +85,13 @@ void sub_080318DC(Entity* this) {
 
             if (this->currentHealth == 0) {
                 this->field_0x3e = ((this->field_0x3e + (7 & Random())) - 4) & 0x1f;
-                this->field_0x42 += this->entityType.parameter * 3;
+                this->field_0x42 += this->type2 * 3;
                 sub_08032338(this);
             }
         }
 
         if (this->field_0x42 && this->frames.all & 0x10) {
-            if (this->entityType.form == 0) {
+            if (this->type == 0) {
                 this->action = 8;
             } else {
                 this->action = 9;
@@ -216,35 +216,35 @@ void sub_08031C58(Entity* this) {
             tmp &= 3;
 
             a = CreateEnemy(0x2e, 1);
-            a->entityType.parameter = 0;
+            a->type2 = 0;
             a->parent = NULL;
             a->field_0x74.HALF.LO = tmp;
             sub_08031E48(this, a);
             a->attachedEntity = CreateEnemy(0x2e, 1);
 
             b = a->attachedEntity;
-            b->entityType.parameter = 1;
+            b->type2 = 1;
             b->parent = a;
             b->field_0x74.HALF.LO = tmp;
             sub_08031E48(this, b);
             b->attachedEntity = CreateEnemy(0x2e, 1);
 
             a = b->attachedEntity;
-            a->entityType.parameter = 2;
+            a->type2 = 2;
             a->parent = b;
             a->field_0x74.HALF.LO = tmp;
             sub_08031E48(this, a);
             a->attachedEntity = CreateEnemy(0x2e, 1);
 
             b = a->attachedEntity;
-            b->entityType.parameter = 3;
+            b->type2 = 3;
             b->parent = a;
             b->field_0x74.HALF.LO = tmp;
             sub_08031E48(this, b);
             b->attachedEntity = CreateEnemy(0x2e, 1);
 
             a = b->attachedEntity;
-            a->entityType.parameter = 4;
+            a->type2 = 4;
             a->parent = b;
             a->attachedEntity = NULL;
             a->field_0x74.HALF.LO = tmp;
@@ -327,7 +327,7 @@ void sub_08031EA8(Entity* this) {
     this->action = 1;
     this->spritePriority.b1 = 1;
     this->field_0x20 = 0x40000;
-    this->height.HALF.HI = (4 - this->entityType.parameter) * 0xe;
+    this->height.HALF.HI = (4 - this->type2) * 0xe;
     this->field_0x78.HALF.HI = Random();
     InitializeAnimation(this, 4);
 }
@@ -358,11 +358,11 @@ void sub_08031EE8(Entity* this) {
 }
 
 void sub_08031F54(Entity* this) {
-    sub_08003FC4(this, gUnk_080CE5F0[this->entityType.parameter]);
-    if (this->entityType.parameter * -0xe <= this->height.HALF.HI) {
+    sub_08003FC4(this, gUnk_080CE5F0[this->type2]);
+    if (this->type2 * -0xe <= this->height.HALF.HI) {
         this->action = 3;
         this->actionDelay = 20;
-        this->height.HALF.HI = this->entityType.parameter * -0xe;
+        this->height.HALF.HI = this->type2 * -0xe;
         if (this->parent != NULL)
             this->spritePriority.b1 = 0;
         InitializeAnimation(this, 6);
@@ -445,7 +445,7 @@ void sub_08032160(Entity* this) {
 
     if (this->actionDelay == 0) {
         this->action = 7;
-        dir = gUnk_080CE5FA[this->field_0x74.HALF.LO * 5 + this->entityType.parameter];
+        dir = gUnk_080CE5FA[this->field_0x74.HALF.LO * 5 + this->type2];
         this->direction = dir;
         if (dir >= 0x10) {
             this->spriteSettings.b.flipX = 1;
diff --git a/src/enemy/beetle.c b/src/enemy/beetle.c
index 9536f297..6f888658 100644
--- a/src/enemy/beetle.c
+++ b/src/enemy/beetle.c
@@ -52,7 +52,7 @@ void sub_08021780(Entity* this) {
 }
 
 void sub_08021818(Entity* this) {
-    if (this->entityType.form == 0) {
+    if (this->type == 0) {
         sub_0804A7D4(this);
     } else {
         Entity* ent = this->parent;
@@ -94,7 +94,7 @@ void Beetle_Initialize(Entity* this) {
 }
 
 void sub_080218B4(Entity* this) {
-    gUnk_080CB5D4[this->entityType.parameter](this);
+    gUnk_080CB5D4[this->type2](this);
 }
 
 void sub_080218CC(Entity* this) {
@@ -222,7 +222,7 @@ void sub_08021B64(Entity* this) {
         int iVar4 = 1;
         if (gPlayerState.field_0xa8 != 11 && gPlayerState.field_0xa8 != 20) {
             if (sub_0807953C())
-                iVar4 = this->entityType.form * 3 + 8;
+                iVar4 = this->type * 3 + 8;
 
             iVar4 = this->actionDelay - iVar4;
             if (iVar4 < 0)
diff --git a/src/enemy/bladeTrap.c b/src/enemy/bladeTrap.c
index 397afc93..c8ffa9af 100644
--- a/src/enemy/bladeTrap.c
+++ b/src/enemy/bladeTrap.c
@@ -11,7 +11,7 @@ void BladeTrap(Entity* ent) {
     u16* puVar3;
     if (ent->action == 0) {
         ent->action = 1;
-        pEVar2 = GetCurrentRoomProperty((u8)(ent->entityType).form);
+        pEVar2 = GetCurrentRoomProperty((u8)ent->type);
         ent->attachedEntity = pEVar2;
         sub_080A2CC0((EntityData*)ent, &ent->attachedEntity, &ent->field_0x74);
     }
diff --git a/src/enemy/bombPeahat.c b/src/enemy/bombPeahat.c
index 8cbb4b51..b8dc9575 100644
--- a/src/enemy/bombPeahat.c
+++ b/src/enemy/bombPeahat.c
@@ -39,7 +39,7 @@ extern const Hitbox gUnk_080CD17C;
 void BombPeahat(Entity* this) {
     s32 iVar1;
 
-    if ((this->entityType.form == 2) && (iVar1 = sub_080012DC(this), iVar1)) {
+    if ((this->type == 2) && (iVar1 = sub_080012DC(this), iVar1)) {
         gUnk_080012C8[iVar1](this);
     } else {
         gUnk_080CD0F0[GetNextFunction(this)](this);
@@ -47,7 +47,7 @@ void BombPeahat(Entity* this) {
 }
 
 void sub_0802A84C(Entity* this) {
-    switch (this->entityType.form) {
+    switch (this->type) {
         default:
             gUnk_080CD108[this->action](this);
             sub_0802AD54(this);
@@ -64,7 +64,7 @@ void sub_0802A84C(Entity* this) {
 
 void sub_0802A8AC(Entity* this) {
     this->field_0x80.HALF.HI = 0;
-    if (this->entityType.form < 2) {
+    if (this->type < 2) {
         InitializeAnimation(this, 0);
     }
 }
@@ -118,7 +118,7 @@ void sub_0802A924(Entity* this) {
     this->spriteOrientation.flipY = 1;
     this->spriteRendering.b3 = 1;
     this->spritePriority.b0 = 1;
-    InitializeAnimation(this, this->entityType.form + 1);
+    InitializeAnimation(this, this->type + 1);
 }
 
 void sub_0802A9A8(Entity* this) {
@@ -245,7 +245,7 @@ void sub_0802AB40(Entity* this) {
             } else {
                 this->action = 5;
                 this->nonPlanarMovement = 0;
-                InitializeAnimation(this, this->entityType.form + 1);
+                InitializeAnimation(this, this->type + 1);
             }
             break;
     }
@@ -341,14 +341,14 @@ void sub_0802AD54(Entity* this) {
 }
 
 void sub_0802ADDC(Entity* this) {
-    Entity* ent = CreateEnemy(0x1b, this->entityType.form + 2);
+    Entity* ent = CreateEnemy(0x1b, this->type + 2);
     if (ent != NULL) {
-        ent->entityType.parameter = !!sub_0802B234(this);
+        ent->type2 = !!sub_0802B234(this);
         ent->parent = this;
         this->attachedEntity = ent;
         CopyPosition(this, ent);
         this->field_0x80.HALF.HI = 1;
-        if (this->entityType.form == 0) {
+        if (this->type == 0) {
             this->field_0x7a.HALF.LO++;
         }
     }
@@ -400,7 +400,7 @@ void sub_0802AED4(Entity* this) {
             sub_08078930(this);
         }
     }
-    if (this->entityType.parameter != 0 && this->field_0x80.HALF.HI) {
+    if (this->type2 != 0 && this->field_0x80.HALF.HI) {
         this->actionDelay = 0;
         this->field_0xf = 1;
     }
diff --git a/src/enemy/businessScrub.c b/src/enemy/businessScrub.c
index 0dbb7dd1..49ba9ea1 100644
--- a/src/enemy/businessScrub.c
+++ b/src/enemy/businessScrub.c
@@ -335,7 +335,7 @@ void sub_08028E84(Entity* this) {
 bool32 sub_08029198(const struct SalesOffering*);
 
 void sub_08028E9C(Entity* this) {
-    const struct SalesOffering* offer = &gUnk_080CC954[this->entityType.form];
+    const struct SalesOffering* offer = &gUnk_080CC954[this->type];
     if (sub_08029198(offer) && (offer->field_0x0 & 2)) {
         offer = &gUnk_080CC954[offer->field_0xa];
     }
diff --git a/src/enemy/chuchu.c b/src/enemy/chuchu.c
index 9b816805..99a9160a 100644
--- a/src/enemy/chuchu.c
+++ b/src/enemy/chuchu.c
@@ -49,7 +49,7 @@ void Chuchu(Entity* this) {
         case 2:
             this->field_0x3a &= 0xfe;
             if (index != this->field_0x80.HALF.HI) {
-                switch (this->entityType.form) {
+                switch (this->type) {
                     case 0:
                         if (this->flags & 0x80) {
                             this->action = 6;
@@ -73,13 +73,13 @@ void Chuchu(Entity* this) {
     gUnk_080CA21C[GetNextFunction(this)](this);
     if (*(char*)(*(int*)&this->field_0x68 + 10) == 0x1c) {
         SetChildOffset(this, 0, 1, -0x10);
-    } else if (this->entityType.form == 2) {
+    } else if (this->type == 2) {
         sub_0801FB34(this);
     }
 }
 
 void Chuchu_OnTick(Entity* this) {
-    switch (this->entityType.form) {
+    switch (this->type) {
         case 0:
             sub_0801F3AC(this);
             gUnk_080CA234[this->action](this);
@@ -97,7 +97,7 @@ void Chuchu_OnTick(Entity* this) {
 void sub_0801EF40(Entity* this) {
     u8 health;
 
-    if (this->entityType.form == 2) {
+    if (this->type == 2) {
         if (this->bitfield == 0x8e || this->bitfield == 0x95) {
             this->flags &= ~0x80;
             this->currentHealth = 0;
@@ -146,9 +146,9 @@ void sub_0801F02C(Entity* this) {
 void sub_0801F048(Entity* this) {
     sub_08003FC4(this, 0x1800);
     GetNextFrame(this);
-    if (this->entityType.form == 0) {
+    if (this->type == 0) {
         sub_0804A7D4(this);
-    } else if (this->entityType.form == 1) {
+    } else if (this->type == 1) {
         CreateDeathFx(this, 0xf2, 0);
     } else {
         CreateDeathFx(this, 0xf1, 0);
@@ -337,7 +337,7 @@ void sub_0801F428(Entity* this) {
     this->actionDelay = Random();
     this->field_0x80.HALF.LO = this->currentHealth;
     this->field_0x82.HALF.LO = 0;
-    if (this->entityType.parameter == 0)
+    if (this->type2 == 0)
         return;
 
     this->action = 3;
@@ -545,7 +545,7 @@ void sub_0801F884(Entity* this) {
     } else {
         Entity* ent = sub_0804A9FC(this, 0x1b);
         if (ent) {
-            ent->entityType.parameter = 64;
+            ent->type2 = 64;
             this->action = 4;
             this->damageType = 165;
             EnqueueSFX(0x193);
@@ -676,7 +676,7 @@ void sub_0801FB34(Entity* this) {
 }
 
 void sub_0801FB68(Entity* this) {
-    switch (this->entityType.form) {
+    switch (this->type) {
         case 0:
             this->action = 9;
             break;
diff --git a/src/enemy/chuchuBoss.c b/src/enemy/chuchuBoss.c
index ee21e03c..674e8774 100644
--- a/src/enemy/chuchuBoss.c
+++ b/src/enemy/chuchuBoss.c
@@ -29,7 +29,7 @@ void ChuchuBoss(Entity* this) {
 
 void sub_08025CBC(Entity* this) {
     sub_08001324(this);
-    if (this->entityType.form == 0) {
+    if (this->type == 0) {
         sub_08027870(this);
     }
 }
diff --git a/src/enemy/darkNut.c b/src/enemy/darkNut.c
index b0c63e8a..49acb71d 100644
--- a/src/enemy/darkNut.c
+++ b/src/enemy/darkNut.c
@@ -60,7 +60,7 @@ void sub_08020BB8(Entity* this) {
     switch (this->bitfield & 0x7f) {
         case 0x1c:
             this->action = 11;
-            this->actionDelay = gUnk_080CAB0C[this->entityType.form];
+            this->actionDelay = gUnk_080CAB0C[this->type];
             this->damageType = 81;
             sub_08021218(this, 8, DirectionToAnimationState(this->field_0x3e ^ 0x10));
             sub_08021588(this);
@@ -68,7 +68,7 @@ void sub_08020BB8(Entity* this) {
             break;
         case 0x16:
             this->action = 11;
-            this->actionDelay = gUnk_080CAB10[this->entityType.form];
+            this->actionDelay = gUnk_080CAB10[this->type];
             this->damageType = 81;
             sub_08021218(this, 8, DirectionToAnimationState(this->field_0x3e ^ 0x10));
             sub_08021588(this);
@@ -79,10 +79,10 @@ void sub_08020BB8(Entity* this) {
                 break;
             switch (this->field_0x78.HALF.HI) {
                 case 8 ... 12:
-                    this->field_0x7a.HALF.LO = gUnk_080CAB04[this->entityType.form];
+                    this->field_0x7a.HALF.LO = gUnk_080CAB04[this->type];
                     break;
                 case 4 ... 6:
-                    this->field_0x7a.HALF.LO = gUnk_080CAB00[this->entityType.form];
+                    this->field_0x7a.HALF.LO = gUnk_080CAB00[this->type];
                     break;
                 default:
                     this->field_0x7a.HALF.LO = 0;
@@ -100,7 +100,7 @@ void sub_08020BB8(Entity* this) {
                     bVar3 = this->attachedEntity->bitfield & 0x7f;
                 }
                 if (bVar3 == 2) {
-                    sub_080213D0(this, gUnk_080CAB08[this->entityType.form]);
+                    sub_080213D0(this, gUnk_080CAB08[this->type]);
                 } else {
                     sub_080213D0(this, 0);
                 }
@@ -412,7 +412,7 @@ void sub_080212B0(Entity* this) {
             break;
     }
 
-    if (this->entityType.form < 2 && tmp == 2)
+    if (this->type < 2 && tmp == 2)
         tmp = gUnk_080CAB52[Random() & 3];
 
     this->attachedEntity = NULL;
@@ -421,7 +421,7 @@ void sub_080212B0(Entity* this) {
 
 void sub_08021328(Entity* this) {
     this->action = 13;
-    this->field_0x7c.BYTES.byte0 = gUnk_080CAB68[this->entityType.form];
+    this->field_0x7c.BYTES.byte0 = gUnk_080CAB68[this->type];
     sub_08021218(this, 0xc, this->animationState);
 }
 
diff --git a/src/enemy/doorMimic.c b/src/enemy/doorMimic.c
index d79f61ff..27357c08 100644
--- a/src/enemy/doorMimic.c
+++ b/src/enemy/doorMimic.c
@@ -24,7 +24,7 @@ extern s16 gUnk_080B4488[];
 
 void DoorMimic(Entity* this) {
     gUnk_080CB734[GetNextFunction(this)](this);
-    this->hitbox = (Hitbox*)gUnk_080CB8A4[this->entityType.parameter][this->frameIndex];
+    this->hitbox = (Hitbox*)gUnk_080CB8A4[this->type2][this->frameIndex];
 }
 
 void sub_08021FDC(Entity* this) {
@@ -44,11 +44,11 @@ void sub_08022004(Entity* this) {
 
 void sub_08022034(Entity* this) {
     this->action = 1;
-    this->entityType.parameter = this->entityType.form & 3;
+    this->type2 = this->type & 3;
     this->spritePriority.b0 = 5;
-    this->field_0x78.HWORD = gUnk_080CB764[this->entityType.parameter * 2 + 0] + this->x.HALF.HI;
-    this->field_0x7a.HWORD = gUnk_080CB764[this->entityType.parameter * 2 + 1] + this->y.HALF.HI;
-    InitializeAnimation(this, this->entityType.parameter);
+    this->field_0x78.HWORD = gUnk_080CB764[this->type2 * 2 + 0] + this->x.HALF.HI;
+    this->field_0x7a.HWORD = gUnk_080CB764[this->type2 * 2 + 1] + this->y.HALF.HI;
+    InitializeAnimation(this, this->type2);
     sub_080221C0(this);
 }
 
@@ -57,7 +57,7 @@ void sub_0802209C(Entity* this) {
         if (sub_0806FBFC(this->field_0x78.HWORD, this->field_0x7a.HWORD, 0x10, 0x10)) {
             this->action = 2;
             this->actionDelay = 0x12;
-            InitializeAnimation(this, this->entityType.parameter + 4);
+            InitializeAnimation(this, this->type2 + 4);
         }
     } else {
         this->actionDelay = this->actionDelay - 1;
@@ -78,7 +78,7 @@ void sub_080220F0(Entity* this) {
         this->action = 4;
         this->actionDelay = 0x78;
         this->field_0x44 = 0;
-        off = gUnk_080CB76C[this->entityType.parameter];
+        off = gUnk_080CB76C[this->type2];
         for (i = 0; i < 6; i++, off++) {
             Entity* fx = CreateFx(this, 0x11, 0);
             if (fx) {
@@ -96,7 +96,7 @@ void sub_08022174(Entity* this) {
     sub_0800445C(this);
     if (--this->actionDelay == 0) {
         this->action = 5;
-        InitializeAnimation(this, this->entityType.parameter + 8);
+        InitializeAnimation(this, this->type2 + 8);
     }
 }
 
@@ -110,10 +110,10 @@ void sub_08022198(Entity* this) {
 }
 
 void sub_080221C0(Entity* this) {
-    u32 tile = COORD_TO_TILE(this) + gUnk_080B4488[this->entityType.parameter];
+    u32 tile = COORD_TO_TILE(this) + gUnk_080B4488[this->type2];
     this->field_0x7c.HALF.HI = tile;
     this->field_0x7c.HALF.LO = sub_080001DA(tile, this->collisionLayer);
-    SetTile(gUnk_080CB79C[this->entityType.parameter], tile, this->collisionLayer);
+    SetTile(gUnk_080CB79C[this->type2], tile, this->collisionLayer);
 }
 
 // clang-format off
diff --git a/src/enemy/fallingBoulder.c b/src/enemy/fallingBoulder.c
index 24f18515..4b469258 100644
--- a/src/enemy/fallingBoulder.c
+++ b/src/enemy/fallingBoulder.c
@@ -31,7 +31,7 @@ void sub_0802C258(Entity* this) {
     this->field_0x20 = 0x20000;
     this->actionDelay = 2;
     this->field_0x7a.HWORD = Random() & 0x70;
-    switch (this->entityType.form) {
+    switch (this->type) {
         case 1:
             this->field_0x7a.HWORD |= 0x100;
             break;
@@ -86,7 +86,7 @@ void sub_0802C334(Entity* this) {
                     this->flags &= ~0x80;
                     break;
                 case 8:
-                    if (this->entityType.parameter != 0 && !sub_08049FA0(this)) {
+                    if (this->type2 != 0 && !sub_08049FA0(this)) {
                         u32 diff = 0;
                         s32 i;
                         for (i = 1; i > -1; i--) {
@@ -113,7 +113,7 @@ void sub_0802C334(Entity* this) {
             if (this->height.HALF.HI - y > 0x38) {
                 sub_0802C62C(this);
                 this->field_0x7a.HWORD = (Random() & 0x7f) | 0x80;
-                if (this->entityType.form == 3) {
+                if (this->type == 3) {
                     this->action = 3;
                 }
             }
diff --git a/src/enemy/fireballGuy.c b/src/enemy/fireballGuy.c
index f7f51c71..3a4e4148 100644
--- a/src/enemy/fireballGuy.c
+++ b/src/enemy/fireballGuy.c
@@ -63,13 +63,13 @@ void sub_08045454(Entity* this) {
     u32 tmp;
 
     /* Can we create enough new entities? */
-    count = gUnk_080D180C[this->entityType.form];
+    count = gUnk_080D180C[this->type];
     if (72 - count <= gEntCount)
         return;
 
     /* Create 2-5 new MiniFireballGuy */
     for (i = 0; i < count; i++)
-        entities[i] = CreateEnemy(0x59, this->entityType.form);
+        entities[i] = CreateEnemy(0x59, this->type);
 
     off = gUnk_080D1810;
     for (i = 0; i < count; i++) {
@@ -77,7 +77,7 @@ void sub_08045454(Entity* this) {
         ent->attachedEntity = entities[(i + 1) % count];
         ent->parent = entities[(i + count - 1) % count];
         tmp = 0;
-        ent->entityType.parameter = 1;
+        ent->type2 = 1;
         ent->height.HALF.HI = tmp;
         ent->hurtBlinkTime = -0x10;
 
diff --git a/src/enemy/gibdo.c b/src/enemy/gibdo.c
index 96d6a08a..a1a9833d 100644
--- a/src/enemy/gibdo.c
+++ b/src/enemy/gibdo.c
@@ -374,7 +374,7 @@ NONMATCH("asm/non_matching/gibdo/sub_08037B48.inc", void sub_08037B48(Entity* th
     Entity* E;
     E = CreateObject(0x2a, 3, 0);
     if (E != 0) {
-        E->entityType.parameter = this->actionDelay;
+        E->type2 = this->actionDelay;
         E->spritePriority.b0 = (E->spritePriority.b0 & 0xf8) | 3;
         E->spriteOffsetX = 0;
         E->spriteOffsetY = 0xfc;
@@ -383,7 +383,7 @@ NONMATCH("asm/non_matching/gibdo/sub_08037B48.inc", void sub_08037B48(Entity* th
     *(Entity**)&this->field_0x80.HWORD = E;
     E = CreateObject(0x2a, 3, 0);
     if (E != 0) {
-        E->entityType.parameter = this->actionDelay;
+        E->type2 = this->actionDelay;
         E->spritePriority.b0 = (E->spritePriority.b0 & 0xf8) | 3;
         E->spriteOffsetX = 0xfd;
         E->spriteOffsetY = 0xf8;
@@ -392,7 +392,7 @@ NONMATCH("asm/non_matching/gibdo/sub_08037B48.inc", void sub_08037B48(Entity* th
     *(Entity**)&this->cutsceneBeh.HWORD = E;
     E = CreateObject(0x2a, 3, 0);
     if (E != 0) {
-        E->entityType.parameter = this->actionDelay;
+        E->type2 = this->actionDelay;
         E->spritePriority.b0 = (E->spritePriority.b0 & 0xf8) | 3;
         E->spriteOffsetX = 0x5;
         E->spriteOffsetY = 0xf5;
diff --git a/src/enemy/gyorgMale.c b/src/enemy/gyorgMale.c
index e728ba20..330e68b8 100644
--- a/src/enemy/gyorgMale.c
+++ b/src/enemy/gyorgMale.c
@@ -114,7 +114,7 @@ void sub_08046898(Entity* this) {
     u32 tmp2;
     if (!tmp)
         return;
-    tmp->entityType.form = 1;
+    tmp->type = 1;
     tmp->parent = this;
     this->attachedEntity = tmp;
     this->action = 1;
@@ -141,7 +141,7 @@ void sub_08046910(Entity* this) {
 }
 
 void sub_08046930(Entity* this) {
-    if (this->entityType.form) {
+    if (this->type) {
         this->previousActionFlag = 5;
         this->direction = 0x20;
         this->nonPlanarMovement = 0x280;
@@ -806,7 +806,7 @@ void sub_08047914(Entity* this) {
     } else {
         this->previousActionFlag = 3;
         this->field_0x70.HALF.LO = 0x3C;
-        this->field_0x7c.HALF.HI = ((this->entityType.form * 0xF) << 2) + 0x78;
+        this->field_0x7c.HALF.HI = ((this->type * 0xF) << 2) + 0x78;
         sub_080A1D70(((Entity*)this->myHeap)->prev, this->animationState);
     }
 }
@@ -816,7 +816,7 @@ void sub_08047978(Entity* this) {
     if (this->currentHealth != 0) {
         if (--this->field_0x70.HALF_U.LO == 0) {
             this->field_0x70.HALF.HI = 1;
-            if (this->entityType.form == 0) {
+            if (this->type == 0) {
                 this->field_0x70.HALF.LO = 0xB4;
             } else {
                 this->field_0x70.HALF.LO = 0x168;
@@ -849,7 +849,7 @@ void sub_08047978(Entity* this) {
     if (this->attachedEntity->action != 1)
         return;
     this->previousActionFlag = 4;
-    if (this->entityType.form == 0) {
+    if (this->type == 0) {
         if ((((Entity*)this->myHeap)->next->animationState >> 6) == 1) {
             this->field_0x80.HWORD = gRoomControls.roomOriginX + 0x1C0;
             this->field_0x82.HWORD = gRoomControls.roomOriginY + 0x250;
@@ -880,7 +880,7 @@ void sub_08047B08(Entity* this) {
     sub_08047E58(this);
     if (!sub_0806FCB8(this, this->field_0x80.HWORD, this->field_0x82.HWORD, 4))
         return;
-    if (this->entityType.form == 0) {
+    if (this->type == 0) {
         this->action = 7;
         this->previousActionFlag = 0;
         this->direction ^= 0x80;
@@ -968,7 +968,7 @@ void sub_08047BF0(Entity* this) {
 void sub_08047D24(Entity* this) {
     this->field_0x7c.HALF_U.HI += 8;
     if (this->field_0x7c.HALF_U.HI > 0x800) {
-        if (this->entityType.form == 0) {
+        if (this->type == 0) {
             ((u32*)this->myHeap)[2] = 0;
         } else {
             ((u32*)this->myHeap)[3] = 0;
diff --git a/src/enemy/hangingSeed.c b/src/enemy/hangingSeed.c
index 7ca8808a..fc09db31 100644
--- a/src/enemy/hangingSeed.c
+++ b/src/enemy/hangingSeed.c
@@ -26,7 +26,7 @@ void nullsub_7(Entity* this) {
 void HangingSeed_Initialize(Entity* this) {
     this->action = 1;
     this->spriteSettings.b.draw = 1;
-    this->frameIndex = this->entityType.form;
+    this->frameIndex = this->type;
     this->spriteRendering.b3 = 1;
     this->spritePriority.b0 = 3;
 }
diff --git a/src/enemy/helmasaur.c b/src/enemy/helmasaur.c
index 5e19018a..64a97b39 100644
--- a/src/enemy/helmasaur.c
+++ b/src/enemy/helmasaur.c
@@ -27,7 +27,7 @@ extern const s8 gUnk_080CD45C[];
 extern const s8 gUnk_080CD464[];
 
 void Helmasaur(Entity* this) {
-    if (this->entityType.form == 0) {
+    if (this->type == 0) {
         EnemyFunctionHandler(this, gUnk_080CD3E4);
         SetChildOffset(this, 0, 1, -0x10);
     } else {
diff --git a/src/enemy/keese.c b/src/enemy/keese.c
index 0b9890c0..0462b254 100644
--- a/src/enemy/keese.c
+++ b/src/enemy/keese.c
@@ -63,7 +63,7 @@ void sub_08021DDC(Entity* this) {
 
 void Keese_Initialize(Entity* this) {
     sub_0804A720(this);
-    if (this->entityType.form != 0) {
+    if (this->type != 0) {
         this->spritePriority.b1 = 1;
         this->height.HALF.HI = -0x10;
     }
diff --git a/src/enemy/lakituCloud.c b/src/enemy/lakituCloud.c
index 4ee9063b..80679029 100644
--- a/src/enemy/lakituCloud.c
+++ b/src/enemy/lakituCloud.c
@@ -75,7 +75,7 @@ void sub_0803CD6C(Entity* this) {
     this->height.HALF.HI = -2;
 
     // Set parent to lakitu
-    lakitu = GetCurrentRoomProperty(this->entityType.form);
+    lakitu = GetCurrentRoomProperty(this->type);
     this->attachedEntity = lakitu;
     this->parent = lakitu;
 
diff --git a/src/enemy/leever.c b/src/enemy/leever.c
index a71c28c0..5ce12ee5 100644
--- a/src/enemy/leever.c
+++ b/src/enemy/leever.c
@@ -57,7 +57,7 @@ void sub_0801FC40(Entity* this) {
 }
 
 void sub_0801FC7C(Entity* this) {
-    if (this->entityType.form == LeeverForm_Red) {
+    if (this->type == LeeverForm_Red) {
         sub_0804A7D4(this);
     } else {
         CreateDeathFx(this, 0xf1, 0);
@@ -89,7 +89,7 @@ void Leever_DigUp(Entity* this) {
 
     if (this->frames.b.f3 != 0) {
         this->action = 3;
-        if (this->entityType.form == LeeverForm_Red) {
+        if (this->type == LeeverForm_Red) {
             this->field_0x74.HWORD = 180;
         } else {
             this->field_0x74.HWORD = 110;
@@ -173,7 +173,7 @@ void Leever_Move(Entity* this) {
     }
 
     this->nonPlanarMovement = (this->frames.all & 0xf) * 0x20;
-    if (this->entityType.form == LeeverForm_Red) {
+    if (this->type == LeeverForm_Red) {
         if ((this->field_0xf++ & 0xf) == 0) {
             sub_08004596(this, sub_0800132C(this, gUnk_020000B0));
         }
diff --git a/src/enemy/likeLike.c b/src/enemy/likeLike.c
index 64207c30..60a7b7b7 100644
--- a/src/enemy/likeLike.c
+++ b/src/enemy/likeLike.c
@@ -70,7 +70,7 @@ void nullsub_139(Entity* this) {
 void sub_08027E70(Entity* this) {
     sub_0804A720(this);
 
-    switch (this->entityType.form) {
+    switch (this->type) {
         case 0:
             this->action = 3;
             this->spriteSettings.b.draw = 0;
diff --git a/src/enemy/madderpillar.c b/src/enemy/madderpillar.c
index 4bed2e91..cea511b4 100644
--- a/src/enemy/madderpillar.c
+++ b/src/enemy/madderpillar.c
@@ -27,7 +27,7 @@ extern const u8 gUnk_080CCDC8[];
 extern const u16 gUnk_080CCDD4[];
 
 void Madderpillar(Entity* this) {
-    gUnk_080CCD44[this->entityType.form](this);
+    gUnk_080CCD44[this->type](this);
 }
 
 void sub_08029870(Entity* this) {
@@ -167,7 +167,7 @@ void sub_08029B2C(Entity* this) {
             }
         } else {
             this->flags &= ~0x80;
-            this->actionDelay = -(this->entityType.form * 15 - 90);
+            this->actionDelay = -(this->type * 15 - 90);
             this->field_0x86.HALF.LO = 1;
         }
     } else {
@@ -179,7 +179,7 @@ void sub_08029B90(Entity* this) {
     this->action = 1;
     this->spriteSettings.b.draw = 1;
     sub_0802A058(this);
-    if (this->entityType.form < 2) {
+    if (this->type < 2) {
         InitializeAnimation(this, 0);
     } else {
         InitializeAnimation(this, 4);
@@ -195,7 +195,7 @@ void sub_08029BC4(Entity* this) {
     uVar2 = this->y.HALF.HI;
     if (sub_08029FE4(this)) {
         u32 index;
-        if (this->entityType.form < 2) {
+        if (this->type < 2) {
             index = 0;
         } else {
             index = 4;
@@ -207,7 +207,7 @@ void sub_08029BC4(Entity* this) {
 
 void sub_08029C08(Entity* this) {
     this->action = 3;
-    this->actionDelay = gUnk_080CCDA0[this->entityType.form];
+    this->actionDelay = gUnk_080CCDA0[this->type];
     this->damageType = 0x6b;
     this->attachedEntity->action = 2;
 }
diff --git a/src/enemy/miniSlime.c b/src/enemy/miniSlime.c
index 55af91ab..08c94fa7 100644
--- a/src/enemy/miniSlime.c
+++ b/src/enemy/miniSlime.c
@@ -52,7 +52,7 @@ void sub_080452A4(Entity* this) {
     this->nonPlanarMovement = 0x100;
     sub_0804A720(this);
     InitializeAnimation(this, 6);
-    if (this->entityType.parameter) {
+    if (this->type2) {
         this->action = 2;
         this->actionDelay = 1;
     } else {
diff --git a/src/enemy/moldorm.c b/src/enemy/moldorm.c
index 6f86d987..186bee30 100644
--- a/src/enemy/moldorm.c
+++ b/src/enemy/moldorm.c
@@ -14,7 +14,7 @@ extern u8 gEntCount;
 extern const s8 gUnk_080CBBC4[];
 
 void Moldorm(Entity* this) {
-    gUnk_080CBB90[this->entityType.form](this);
+    gUnk_080CBB90[this->type](this);
 }
 
 void sub_08022BA0(Entity* this) {
@@ -133,8 +133,8 @@ void sub_08022DE8(Entity* this) {
     this->animationState = this->parent->animationState;
     *(u32*)&this->cutsceneBeh = this->animationState * 0x11111111;
 
-    if (this->entityType.form != 3) {
-        this->frameIndex = this->entityType.form + 7;
+    if (this->type != 3) {
+        this->frameIndex = this->type + 7;
     } else {
         this->frameIndex = this->animationState + 10;
     }
diff --git a/src/enemy/moldworm.c b/src/enemy/moldworm.c
index ffa1dc94..3bf68715 100644
--- a/src/enemy/moldworm.c
+++ b/src/enemy/moldworm.c
@@ -31,7 +31,7 @@ void Moldworm(Entity* this) {
     u16 prevX = this->x.HALF.HI;
     u16 prevY = this->y.HALF.HI;
 
-    if (this->entityType.form == 0) {
+    if (this->type == 0) {
         if (this->action != 0) {
             sub_0802390C(this);
         }
@@ -39,7 +39,7 @@ void Moldworm(Entity* this) {
         EnemyFunctionHandler(this, gUnk_080CBC38);
     } else {
         if (this->parent->next) {
-            if (this->entityType.form != 8) {
+            if (this->type != 8) {
                 sub_080235BC(this);
             } else {
                 sub_08023730(this);
@@ -76,10 +76,10 @@ void sub_080230E4(Entity* this) {
         this->field_0x7c.BYTES.byte3 = 0;
         this->field_0x7a.HALF.HI = 0;
         if (this->bitfield == 0x80 || this->bitfield == 0x9e) {
-            this->entityType.parameter = 0;
+            this->type2 = 0;
             this->field_0x80.HALF.LO = 0x14;
         } else {
-            this->entityType.parameter = 1;
+            this->type2 = 1;
             this->field_0x80.HALF.LO = 8;
         }
     }
@@ -259,7 +259,7 @@ void sub_080234D8(Entity* this) {
 }
 
 void sub_0802351C(Entity* this) {
-    if (this->actionDelay != 0 && (this->entityType.parameter == 1 || gPlayerEntity.frameIndex == 0xff)) {
+    if (this->actionDelay != 0 && (this->type2 == 1 || gPlayerEntity.frameIndex == 0xff)) {
         this->actionDelay = 0;
         this->attachedEntity->action = 3;
         this->attachedEntity->field_0xf = this->field_0x80.HALF.LO;
@@ -268,7 +268,7 @@ void sub_0802351C(Entity* this) {
     }
 
     if (this->field_0x7c.BYTES.byte3 == 0) {
-        if (this->entityType.parameter == 0) {
+        if (this->type2 == 0) {
             gPlayerEntity.animationState = this->animationState & 7;
             gPlayerState.flags.all |= 0x80000;
             PositionRelative(this, &gPlayerEntity, 0, gUnk_080CBC90[this->animationState & 7] << 0x10);
@@ -291,7 +291,7 @@ void sub_080235D4(Entity* this) {
     this->x.HALF.HI = parent->x.HALF.HI;
     this->y.HALF.HI = parent->y.HALF.HI;
     sub_080239F0(this);
-    if (this->entityType.form == 1) {
+    if (this->type == 1) {
         this->animationState = 0x10;
     } else {
         this->animationState = 0x12;
@@ -404,7 +404,7 @@ void sub_08023894(Entity* this) {
         this->action = 2;
         this->parent->field_0x7c.BYTES.byte3 = 1;
         InitializeAnimation(this, this->animationState);
-        if ((this->parent->entityType).parameter == 0) {
+        if (this->parent->type2 == 0) {
             gPlayerState.flags.all |= 0x200000;
             gPlayerEntity.x.HALF.HI = this->x.HALF.HI;
             gPlayerEntity.y.HALF.HI = this->y.HALF.HI;
diff --git a/src/enemy/octorok.c b/src/enemy/octorok.c
index 7e563ab0..d89e4e65 100644
--- a/src/enemy/octorok.c
+++ b/src/enemy/octorok.c
@@ -47,7 +47,7 @@ void sub_0801EAE8(Entity* this) {
 
 // Death
 void sub_0801EB0C(Entity* this) {
-    if (this->entityType.form == 0) {
+    if (this->type == 0) {
         sub_0804A7D4(this);
     } else {
         CreateDeathFx(this, 241, 0);
@@ -97,8 +97,8 @@ void sub_0801EB9C(Entity* this) {
 // Init
 void Octorok_Initialize(Entity* this) {
     sub_0804A720(this);
-    if (this->entityType.form == 2) {
-        this->animationState = this->entityType.form;
+    if (this->type == 2) {
+        this->animationState = this->type;
     } else {
         this->animationState = Random() & 3;
     }
@@ -120,7 +120,7 @@ void Octorok_Move(Entity* this) {
     ProcessMovement(this);
     GetNextFrame(this);
     if (--this->actionDelay == 0) {
-        if (Octorok_FacesPlayer(this) && gOctorokSpitChanceModifier[this->entityType.form] <= (Random() & 3)) {
+        if (Octorok_FacesPlayer(this) && gOctorokSpitChanceModifier[this->type] <= (Random() & 3)) {
             this->action = 3;
             InitializeAnimation(this, this->animationState + 4);
         } else {
@@ -155,9 +155,9 @@ void Octorok_Pause(Entity* this) {
 }
 
 void Octorok_Turn(Entity* this) {
-    if (this->entityType.form != 2) {
+    if (this->type != 2) {
         if (sub_08049FA0(this)) {
-            if (this->entityType.form == 1 && (Random() & 3) == 0 && sub_08049FDC(this, 1)) {
+            if (this->type == 1 && (Random() & 3) == 0 && sub_08049FDC(this, 1)) {
                 this->direction = DirectionRoundUp(GetFacingDirection(this, gUnk_020000B0));
             } else {
                 this->direction = DirectionRound(Random());
diff --git a/src/enemy/peahat.c b/src/enemy/peahat.c
index 828c2c4d..165bf1eb 100644
--- a/src/enemy/peahat.c
+++ b/src/enemy/peahat.c
@@ -32,7 +32,7 @@ enum {
 };
 
 void Peahat(Entity* this) {
-    if (this->entityType.form == PeahatForm_Torso) {
+    if (this->type == PeahatForm_Torso) {
         EnemyFunctionHandler(this, gPeahatFunctions);
         SetChildOffset(this, 0, 1, -0x10);
     } else {
diff --git a/src/enemy/pesto.c b/src/enemy/pesto.c
index 7a12529a..c3e67cc8 100644
--- a/src/enemy/pesto.c
+++ b/src/enemy/pesto.c
@@ -137,7 +137,7 @@ void sub_080240B8(Entity* this) {
         this->x.HALF.HI += (direction & 0x10) ? -0x20 : 0x20;
     }
 
-    switch (this->entityType.form) {
+    switch (this->type) {
         case 0:
             this->field_0x78.HWORD = -0x10;
             this->height.HALF.HI = -0x10;
@@ -164,7 +164,7 @@ void sub_080240B8(Entity* this) {
     this->direction = direction;
     sub_080249DC(this);
 
-    if (this->entityType.form == 1) {
+    if (this->type == 1) {
         Entity* ent;
 
         this->field_0x82.HALF.HI = 0;
@@ -192,7 +192,7 @@ void sub_080241C0(Entity* this) {
             break;
         case 1:
             if (--this->field_0xf == 0) {
-                if (this->entityType.form != 0) {
+                if (this->type != 0) {
                     u8 tmp = this->field_0x82.HALF.HI & 0x80;
                     if (tmp) {
                         sub_08024C94(this);
@@ -535,7 +535,7 @@ void sub_08024940(Entity* this) {
             this->height.HALF.HI += 2;
     }
 
-    if (this->entityType.parameter != 0 || CheckIsDungeon()) {
+    if (this->type2 != 0 || CheckIsDungeon()) {
         if (!sub_08049FA0(this)) {
             this->direction = sub_08049EE4(this);
             sub_080249F4(this);
diff --git a/src/enemy/puffstool.c b/src/enemy/puffstool.c
index 881437f5..08908191 100644
--- a/src/enemy/puffstool.c
+++ b/src/enemy/puffstool.c
@@ -60,9 +60,9 @@ void sub_08025020(Entity* this) {
         case 0x1b:
             sub_0804AA1C(this);
 
-            tmp = gUnk_080CBFE8[(*(Entity**)&this->field_0x4c)->entityType.form];
+            tmp = gUnk_080CBFE8[(*(Entity**)&this->field_0x4c)->type];
             if (tmp < this->field_0x82.HALF.LO) {
-                this->field_0x82.HALF.LO -= gUnk_080CBFE8[(*(Entity**)&this->field_0x4c)->entityType.form];
+                this->field_0x82.HALF.LO -= gUnk_080CBFE8[(*(Entity**)&this->field_0x4c)->type];
             } else {
                 this->cutsceneBeh.HWORD = 0x294;
                 this->damageType = 0x83;
diff --git a/src/enemy/rockChuchu.c b/src/enemy/rockChuchu.c
index 8c4a82f3..01a0c9c7 100644
--- a/src/enemy/rockChuchu.c
+++ b/src/enemy/rockChuchu.c
@@ -42,7 +42,7 @@ void sub_08022254(Entity* this) {
                 CreateFx(this, 4, 0);
                 ent = CreateEnemy(1, 1);
                 if (ent) {
-                    ent->entityType.parameter = 1;
+                    ent->type2 = 1;
                     ent->hurtBlinkTime = -8;
                     sub_0804A4E4(this, ent);
                     this->action = 2;
diff --git a/src/enemy/rupeeLike.c b/src/enemy/rupeeLike.c
index 98eccc87..74775cab 100644
--- a/src/enemy/rupeeLike.c
+++ b/src/enemy/rupeeLike.c
@@ -26,7 +26,7 @@ extern Hitbox gUnk_080FD260;
 void RupeeLike(Entity* this) {
     u32 uVar1;
 
-    if (this->entityType.parameter == 0) {
+    if (this->type2 == 0) {
         uVar1 = (u8)sub_080043E8(this);
         if (uVar1 != 0) {
             if (this->action == 4) {
@@ -75,7 +75,7 @@ void sub_08029318(Entity* this) {
 }
 
 void sub_080293B4(Entity* this) {
-    CreateDeathFx(this, 0xff, gUnk_080CCC34[this->cutsceneBeh.HALF.LO * 3 + this->entityType.form]);
+    CreateDeathFx(this, 0xff, gUnk_080CCC34[this->cutsceneBeh.HALF.LO * 3 + this->type]);
 }
 
 void nullsub_141() {
@@ -91,11 +91,11 @@ void sub_080293DC(Entity* this) {
 void sub_0802940C(Entity* this) {
     Entity* ent;
 
-    ent = CreateEnemy(0x17, this->entityType.form);
+    ent = CreateEnemy(0x17, this->type);
     if (ent != NULL) {
         sub_0804A720(this);
         ent->parent = this;
-        ent->entityType.parameter = 1;
+        ent->type2 = 1;
         this->attachedEntity = ent;
         this->field_0x80.HALF.HI = 0;
         this->cutsceneBeh.HALF.LO = 0;
@@ -172,7 +172,7 @@ void sub_0802953C(Entity* this) {
         if (--this->field_0x82.HALF.HI == 0) {
             this->field_0x82.HALF.HI = 0x41;
             if (gSave.stats.rupees != 0) {
-                ModRupees(gUnk_080CCC44[this->entityType.form]);
+                ModRupees(gUnk_080CCC44[this->type]);
                 this->cutsceneBeh.HALF.LO = 1;
             }
         }
@@ -200,7 +200,7 @@ void sub_08029660(Entity* this) {
     u32 temp;
     this->action = 1;
     this->spriteIndex = 0xd1;
-    temp = gUnk_080CCC47[this->entityType.form];
+    temp = gUnk_080CCC47[this->type];
     this->palette.b.b0 = temp;
 }
 
@@ -275,7 +275,7 @@ void sub_080297F0(Entity* this) {
     this->damageType = 0x8e;
     sub_080AE068(this);
     this->spriteIndex = 0x143;
-    temp = gUnk_080CCC47[this->entityType.form];
+    temp = gUnk_080CCC47[this->type];
     this->palette.b.b0 = temp;
     this->spriteVramOffset = 9;
     InitializeAnimation(this, 0x54);
diff --git a/src/enemy/sensorBladeTrap.c b/src/enemy/sensorBladeTrap.c
index a0a049c0..d1bfd125 100644
--- a/src/enemy/sensorBladeTrap.c
+++ b/src/enemy/sensorBladeTrap.c
@@ -21,7 +21,7 @@ void SensorBladeTrap(Entity* this) {
 
 void sub_0802B9EC(Entity* this) {
     this->action = 1;
-    this->field_0x78.HWORD = gUnk_080CD3D4[this->entityType.form];
+    this->field_0x78.HWORD = gUnk_080CD3D4[this->type];
     this->field_0x7c.HALF.LO = this->cutsceneBeh.HWORD;
     this->field_0x7c.HALF.HI = this->field_0x86.HWORD;
 }
diff --git a/src/enemy/slime.c b/src/enemy/slime.c
index fee54771..13782f7a 100644
--- a/src/enemy/slime.c
+++ b/src/enemy/slime.c
@@ -102,20 +102,20 @@ void sub_080450A8(Entity* this) {
     PosOffset* off;
 
     /* Can we create enough new entities? */
-    count = gUnk_080D16D0[this->entityType.form];
+    count = gUnk_080D16D0[this->type];
     if (72 - count <= gEntCount)
         return;
 
     /* Create 2-4 new MiniSlime */
     for (i = 0; i < count; i++)
-        entities[i] = CreateEnemy(0x57, this->entityType.form);
+        entities[i] = CreateEnemy(0x57, this->type);
 
     off = gUnk_080D16D4;
     for (i = 0; i < count; i++) {
         ent = entities[i];
         ent->attachedEntity = entities[(i + 1) % count];
         ent->parent = entities[(i + count - 1) % count];
-        ent->entityType.parameter = 1;
+        ent->type2 = 1;
         ent->height.HALF.HI = 0;
         ent->hurtBlinkTime = -0x10;
 
diff --git a/src/enemy/sluggula.c b/src/enemy/sluggula.c
index e11170bb..86b90864 100644
--- a/src/enemy/sluggula.c
+++ b/src/enemy/sluggula.c
@@ -21,11 +21,11 @@ extern const s8 gUnk_080CBDF7[];
 extern const s8 gUnk_080CBDFF[];
 
 void Sluggula(Entity* this) {
-    if (this->entityType.form == 1) {
+    if (this->type == 1) {
         EnemyFunctionHandler(this, gUnk_080CBDBC);
 
         SetChildOffset(this, 0, 1, -0x10);
-    } else if (this->entityType.form == 0) {
+    } else if (this->type == 0) {
         if (this->height.HALF.HI == 0) {
             u32 idx = sub_080012DC(this);
             if (idx != 0) {
@@ -49,7 +49,7 @@ void sub_08023C20(Entity* this) {
     if (this->field_0x43)
         sub_0804A9FC(this, 0x1c);
 
-    if (this->entityType.form == 1) {
+    if (this->type == 1) {
         sub_0804AA30(this, gUnk_080CBDBC);
     } else {
         sub_0804AA30(this, gUnk_080CBDD4);
@@ -89,7 +89,7 @@ void sub_08023CE0(Entity* this) {
     switch (this->action) {
         case 0:
             sub_0804A720(this);
-            if (this->entityType.parameter == 1) {
+            if (this->type2 == 1) {
                 this->action = 2;
                 if (this->actionDelay == 0) {
                     this->actionDelay = 1;
diff --git a/src/enemy/smallPesto.c b/src/enemy/smallPesto.c
index 356baa4a..f1b039f4 100644
--- a/src/enemy/smallPesto.c
+++ b/src/enemy/smallPesto.c
@@ -130,11 +130,11 @@ void sub_080317F8(Entity* this) {
 }
 
 void sub_08031840(Entity* this) {
-    Entity* enemy = CreateEnemy(0x2d, this->entityType.form);
+    Entity* enemy = CreateEnemy(0x2d, this->type);
     if (enemy != NULL) {
         CopyPosition(this, enemy);
         enemy->parent = this;
         this->attachedEntity = enemy;
-        enemy->entityType.parameter = 1;
+        enemy->type2 = 1;
     }
 }
diff --git a/src/enemy/spark.c b/src/enemy/spark.c
index 9299c856..210b8431 100644
--- a/src/enemy/spark.c
+++ b/src/enemy/spark.c
@@ -39,7 +39,7 @@ void nullsub_15(Entity* this) {
 void sub_0802B33C(Entity* this) {
     sub_0804A720(this);
     this->action = 1;
-    this->direction = (this->entityType).parameter;
+    this->direction = this->type2;
     this->field_0xf = 0x78;
     InitializeAnimation(this, 0);
 }
@@ -49,7 +49,7 @@ void sub_0802B35C(Entity* this) {
 
     GetNextFrame(this);
     ProcessMovement(this);
-    is_head = this->entityType.form == 0;
+    is_head = this->type == 0;
     if (this->collisions == 0) {
         if (--this->field_0xf == 0) {
             this->field_0xf = 0x78;
diff --git a/src/enemy/spearMoblin.c b/src/enemy/spearMoblin.c
index 42a5a3a4..24009c34 100644
--- a/src/enemy/spearMoblin.c
+++ b/src/enemy/spearMoblin.c
@@ -84,7 +84,7 @@ void sub_08028314(Entity* this) {
     this->field_0x82.HALF.LO = 1;
 
     if (this->actionDelay) {
-        this->animationState = this->entityType.parameter << 1;
+        this->animationState = this->type2 << 1;
         this->actionDelay = 0x1e;
         this->nonPlanarMovement = 0x80;
         this->direction = this->animationState << 2;
diff --git a/src/enemy/tektite.c b/src/enemy/tektite.c
index f2eeee55..66d2ca82 100644
--- a/src/enemy/tektite.c
+++ b/src/enemy/tektite.c
@@ -30,7 +30,7 @@ void sub_0802F150(Entity* this) {
             case 0x14:
                 this->action = 1;
                 this->previousActionFlag = 0;
-                if ((this->entityType).form != 0) {
+                if (this->type != 0) {
                     this->actionDelay = 0xc0;
                 } else {
                     this->actionDelay = gUnk_080CDEF8[Random() & 3];
@@ -76,9 +76,9 @@ void sub_0802F210(Entity* this) {
     this->field_0xf = 0;
     *(u8*)&this->field_0x7c = 0;
 
-    this->field_0x80.HWORD = this->entityType.form == 0 ? 0x1800 : 0x2800;
+    this->field_0x80.HWORD = this->type == 0 ? 0x1800 : 0x2800;
 
-    this->field_0x82.HWORD = this->entityType.form == 0 ? 0x2800 : 0x3000;
+    this->field_0x82.HWORD = this->type == 0 ? 0x2800 : 0x3000;
 
     InitializeAnimation(this, 0);
 }
@@ -95,7 +95,7 @@ void sub_0802F284(Entity* this) {
         if ((this->frames.b.f3) != 0) {
             this->action = 2;
             this->actionDelay = 0x10;
-            this->field_0xf = this->entityType.form;
+            this->field_0xf = this->type;
             this->field_0x20 = this->field_0x82.HWORD << 4;
             sub_0802F45C(this);
             InitializeAnimation(this, 2);
@@ -120,7 +120,7 @@ void sub_0802F300(Entity* this) {
     if (sub_080044EC(this, this->field_0x80.HWORD) == 1) {
         this->action = 3;
         this->previousActionFlag = 0;
-        if (this->entityType.form != 0) {
+        if (this->type != 0) {
             rand = 0;
         }
 
@@ -165,10 +165,10 @@ void sub_0802F3F4(Entity* this) {
     GetNextFrame(this);
 
     if ((this->frames.b.f3) != 0) {
-        if ((*(u8*)&this->field_0x7c.HALF.LO < 2) && ((this->entityType.form % 2) != 0)) {
+        if ((*(u8*)&this->field_0x7c.HALF.LO < 2) && ((this->type % 2) != 0)) {
             this->action = 2;
             this->actionDelay = 0x10;
-            this->field_0xf = this->entityType.form;
+            this->field_0xf = this->type;
             this->field_0x20 = this->field_0x82.HWORD << 4;
             (*(u8*)&this->field_0x7c.HALF.LO)++;
             sub_0802F45C(this);
diff --git a/src/enemy/tektiteGolden.c b/src/enemy/tektiteGolden.c
index e09309eb..3bf14e34 100644
--- a/src/enemy/tektiteGolden.c
+++ b/src/enemy/tektiteGolden.c
@@ -45,9 +45,9 @@ void sub_08037F58(Entity* this) {
     u32 uVar1;
 
     if ((this->field_0x3a & 2) == 0) {
-        SetGlobalFlag(this->entityType.parameter);
+        SetGlobalFlag(this->type2);
     }
-    if ((this->entityType).form != 0) {
+    if (this->type != 0) {
         uVar1 = 0x59;
     } else {
         uVar1 = 0x58;
@@ -64,7 +64,7 @@ void sub_08037F84(Entity* this) {
 
 void sub_08037FA0(Entity* this) {
 
-    if (CheckGlobalFlag(this->entityType.parameter)) {
+    if (CheckGlobalFlag(this->type2)) {
         DeleteThisEntity();
     }
     sub_0804A720(this);
diff --git a/src/enemy/treeItem.c b/src/enemy/treeItem.c
index 38fce4c3..bf541184 100644
--- a/src/enemy/treeItem.c
+++ b/src/enemy/treeItem.c
@@ -17,7 +17,7 @@ void TreeItem(Entity* this) {
 
     if (this->action == 0) {
         this->action++;
-        this->field_0x68.HALF.LO = sub_080028F4(gUnk_080D29E0[this->entityType.form]);
+        this->field_0x68.HALF.LO = sub_080028F4(gUnk_080D29E0[this->type]);
         if (this->field_0x68.HALF.LO > 8) {
             DeleteThisEntity();
         }
diff --git a/src/enemy/vaatiBall.c b/src/enemy/vaatiBall.c
index 0b339c71..02bf4e39 100644
--- a/src/enemy/vaatiBall.c
+++ b/src/enemy/vaatiBall.c
@@ -50,7 +50,7 @@ void sub_0804468C(Entity* this) {
     this->spriteRendering.b3 = 2;
     this->spritePriority.b0 = 5;
     this->cutsceneBeh.HALF.LO = 0;
-    switch (this->entityType.form) {
+    switch (this->type) {
         case 0:
             this->action = 1;
             this->actionDelay = 1;
@@ -183,7 +183,7 @@ void sub_08044868(Entity* this) {
                 if (draw == 1 && this->cutsceneBeh.HALF.LO == 0) {
                     vaati = sub_0804A98C(this, 0x18, 0);
                     if (vaati) {
-                        vaati->entityType.parameter = 1;
+                        vaati->type2 = 1;
                         vaati->parent = this;
                         this->cutsceneBeh.HALF.LO = 1;
                         this->damageType = 0;
diff --git a/src/enemy/wallMaster.c b/src/enemy/wallMaster.c
index 8f359f31..1ba24a96 100644
--- a/src/enemy/wallMaster.c
+++ b/src/enemy/wallMaster.c
@@ -58,7 +58,7 @@ void sub_0802A4E4(Entity* this) {
     this->action = 1;
     this->collisionLayer = 3;
     this->field_0x7c.BYTES.byte1 = Random();
-    this->field_0x7a.HWORD = this->entityType.parameter * 0x3c;
+    this->field_0x7a.HWORD = this->type2 * 0x3c;
     this->field_0x7c.BYTES.byte0 = this->actionDelay;
     this->field_0x78.HWORD = this->actionDelay * 0x3c;
     UpdateSpriteForCollisionLayer(this);
@@ -184,7 +184,7 @@ void sub_0802A78C(Entity* this) {
                 }
             }
         } else {
-            this->field_0x7a.HWORD = this->entityType.parameter * 0x3c + 1;
+            this->field_0x7a.HWORD = this->type2 * 0x3c + 1;
         }
     }
 }
diff --git a/src/enemy/wisp.c b/src/enemy/wisp.c
index c423b00a..10463258 100644
--- a/src/enemy/wisp.c
+++ b/src/enemy/wisp.c
@@ -36,9 +36,9 @@ void sub_08033564(Entity* this) {
             this->flags &= 0x7f;
             this->field_0x7c.HALF.LO = 0x27c;
             gPlayerState.flags.all |= 0x4000;
-            gSave.stats.effect = this->entityType.form + 1;
+            gSave.stats.effect = this->type + 1;
             gSave.stats.effectTimer = 600;
-            if (this->entityType.form == 0) {
+            if (this->type == 0) {
                 break;
             }
             DeleteThisEntity();
@@ -90,7 +90,7 @@ void sub_08033674(Entity* this) {
     this->field_0x80.HWORD = this->x.HALF.HI;
     this->field_0x82.HWORD = this->y.HALF.HI;
     sub_08033744(this);
-    InitializeAnimation(this, this->entityType.parameter);
+    InitializeAnimation(this, this->type2);
 }
 
 void sub_080336A8(Entity* this) {
diff --git a/src/entity.c b/src/entity.c
index 6a980bbb..cb81ae21 100644
--- a/src/entity.c
+++ b/src/entity.c
@@ -61,7 +61,7 @@ typedef void (*Deleter)(void*);
 
 void DeleteEntityAny(Entity* ent) {
     Deleter deleter = NULL;
-    if (ent->entityType.type == 9) {
+    if (ent->kind == 9) {
         deleter = (Deleter)DeleteManager;
     } else {
         deleter = (Deleter)DeleteEntity;
@@ -97,7 +97,7 @@ void DeleteEntity(Entity* ent) {
         UnloadHitbox(ent);
         sub_0801DA0C(ent->myHeap);
         ent->myHeap = NULL;
-        if ((ent->entityType).type == 3) {
+        if (ent->kind == 3) {
             sub_0804AA1C(ent);
         }
         ent->flags = ent->flags & 0x7f;
@@ -132,8 +132,6 @@ void ClearDeletedEntity(Entity* ent) {
     gEntCount--;
 }
 
-extern EntityType gHitboxCount;
-
 void DeleteAllEntities(void) {
     Entity* ent;
     Entity* next;
@@ -248,7 +246,7 @@ void AppendEntityToList(Entity* ent, int listIndex) {
     ent->prev = list->last;
     list->last->next = ent;
     list->last = ent;
-    if (ent->entityType.type != 9) {
+    if (ent->kind != 9) {
         ent->spritePriority.b0 = 4;
         gEntCount++;
     } else {
@@ -283,8 +281,7 @@ bool32 DoesSimilarEntityExist(Entity* ent) {
     list = &gEntityLists[0];
     do {
         for (i = list->first; (u32)i != (u32)list; i = i->next) {
-            if ((u32)i != (u32)ent && i->entityType.type == ent->entityType.type &&
-                i->entityType.subtype == ent->entityType.subtype) {
+            if ((u32)i != (u32)ent && i->kind == ent->kind && i->id == ent->id) {
                 return TRUE;
             }
         }
@@ -299,7 +296,7 @@ Entity* FindEntityInListBySubtype(int type, int subtype, int listIndex) {
 
     list = &gEntityLists[listIndex];
     for (it = list->first; (u32)it != (u32)list; it = it->next) {
-        if (type == it->entityType.type && subtype == it->entityType.subtype)
+        if (type == it->kind && subtype == it->id)
             return it;
     }
     return NULL;
@@ -311,8 +308,7 @@ Entity* FindEntityInListByForm(int type, int subtype, int listIndex, int form, i
 
     list = &gEntityLists[listIndex];
     for (i = list->first; (u32)i != (u32)list; i = i->next) {
-        if (type == i->entityType.type && subtype == i->entityType.subtype && form == i->entityType.form &&
-            parameter == i->entityType.parameter)
+        if (type == i->kind && subtype == i->id && form == i->type && parameter == i->type2)
             return i;
     }
     return NULL;
@@ -324,7 +320,7 @@ Entity* FindNextEntityOfSameSubtype(Entity* ent, int listIndex) {
 
     list = &gEntityLists[listIndex];
     for (i = ent->next; (u32)i != (u32)list; i = i->next) {
-        if (i->entityType.type == ent->entityType.type && i->entityType.subtype == ent->entityType.subtype)
+        if (i->kind == ent->kind && i->id == ent->id)
             return i;
     }
     return NULL;
@@ -337,7 +333,7 @@ Entity* FindEntityBySubtype(int type, int subtype) {
     list = &gEntityLists[0];
     do {
         for (i = (Entity*)list->first; (u32)i != (u32)list; i = i->next) {
-            if ((type == (i->entityType).type) && (subtype == (i->entityType).subtype))
+            if (type == i->kind && (subtype == i->id))
                 return i;
         }
     } while (++list < &gEntityLists[9]);
@@ -354,7 +350,7 @@ void DeleteAllEnemies(void) {
     do {
         for (ent = list->first; (u32)ent != (u32)list; ent = next) {
             next = ent->next;
-            if (ent->entityType.type == 3)
+            if (ent->kind == 3)
                 DeleteEntity(ent);
         }
     } while (++list < &gEntityLists[9]);
diff --git a/src/ezloCap.c b/src/ezloCap.c
index 36b7d3cf..fce6880f 100644
--- a/src/ezloCap.c
+++ b/src/ezloCap.c
@@ -94,7 +94,7 @@ void sub_0806DA1C(Entity* this, u32* param_2) {
 u8 sub_0806DA3C(Entity* this) {
     u32 result;
 
-    switch (this->entityType.form) {
+    switch (this->type) {
         default:
             result = 0;
             break;
@@ -141,7 +141,7 @@ void sub_0806DAD0(Entity* this) {
 }
 
 void sub_0806DAE8(Entity* this) {
-    switch (this->entityType.form - 1) {
+    switch (this->type - 1) {
         case 0:
             SetLocalFlag(0xee);
             break;
@@ -253,7 +253,7 @@ void sub_0806DCC0() {
 void NPC4E_Fusion(Entity* this) {
     if (this->action == 0) {
         this->action += 1;
-        switch (this->entityType.form) {
+        switch (this->type) {
             case 1:
             case 2:
             case 3:
diff --git a/src/game.c b/src/game.c
index 3afb4f11..b56f4836 100644
--- a/src/game.c
+++ b/src/game.c
@@ -274,7 +274,7 @@ void InitializePlayer(void) {
         case 0xc:
             gPlayerState.field_0x34[4] = 4;
     }
-    pl->entityType.type = 1;
+    pl->kind = 1;
     pl->flags |= 0xa0;
     pl->spritePriority.b0 = 4;
     pl->currentHealth = gSave.stats.health;
diff --git a/src/item11.c b/src/item11.c
index 2a1257e1..5821d0b5 100644
--- a/src/item11.c
+++ b/src/item11.c
@@ -55,15 +55,15 @@ void sub_08018CBC(Entity* this) {
         this->spriteIndex = 0xa6;
         this->palette.raw = 0x33;
         this->spriteVramOffset = 0;
-        (this->entityType).form = gPlayerState.field_0x1d[0] - 1;
-        this->actionDelay = gUnk_080B3DE0[(this->entityType).form * 2];
-        this->field_0x44 = gUnk_080B3DE0[(this->entityType).form * 2 + 1];
+        this->type = gPlayerState.field_0x1d[0] - 1;
+        this->actionDelay = gUnk_080B3DE0[this->type * 2];
+        this->field_0x44 = gUnk_080B3DE0[this->type * 2 + 1];
         this->field_0x40 = 0x1b;
-        this->hitbox = gUnk_080B3DE8[(this->entityType).form];
+        this->hitbox = gUnk_080B3DE8[this->type];
         (u32*)gPlayerEntity.field_0x70.WORD = this;
         sub_08078CD0(&gPlayerEntity);
         (u32*)gPlayerEntity.field_0x70.WORD = pEVar3;
-        InitializeAnimation(this, (this->entityType).form + 10);
+        InitializeAnimation(this, this->type + 10);
         sub_08018FA0(this);
     }
     sub_0801766C(this);
diff --git a/src/item14.c b/src/item14.c
index d27a6345..7ca56f53 100644
--- a/src/item14.c
+++ b/src/item14.c
@@ -22,7 +22,7 @@ void sub_0805FBE8(Entity* this) {
     this->nonPlanarMovement = 0x380;
     this->animationState = this->animationState & 0x7f;
     if (this->collisionLayer == 2) {
-        this->entityType.parameter = 1;
+        this->type2 = 1;
     }
     this->direction = this->animationState << 2;
     *(u32*)&this->field_0x6c = 0x3c;
@@ -40,7 +40,7 @@ void sub_0805FC74(Entity* this) {
         GetNextFrame(this);
         sub_0806F69C(this);
         ++this->actionDelay;
-        if (this->entityType.parameter == 0) {
+        if (this->type2 == 0) {
             sub_0800451C(this);
         }
         if (!sub_080002F0(COORD_TO_TILE(this), gPlayerEntity.collisionLayer, 0x80) &&
diff --git a/src/loadRoom.c b/src/loadRoom.c
index f0106fc2..04b8e02c 100644
--- a/src/loadRoom.c
+++ b/src/loadRoom.c
@@ -37,7 +37,7 @@ void sub_0804B058(EntityData* dat) {
             if ((uVar2 < 0x20) && ((dat->type) == 3)) {
                 if (sub_08049D1C(uVar2) != 0) {
                     ent = LoadRoomEntity(dat);
-                    if ((ent != NULL) && ((ent->entityType).type == 3)) {
+                    if ((ent != NULL) && (ent->kind == 3)) {
                         ent->field_0x6c.HALF.LO = uVar2 | 0x80;
                     }
                 }
diff --git a/src/manager/manager15.c b/src/manager/manager15.c
index b8bf806a..bde4f0df 100644
--- a/src/manager/manager15.c
+++ b/src/manager/manager15.c
@@ -87,7 +87,7 @@ void sub_0805A370(Manager15* this) {
 void sub_0805A394(Manager15* this) {
     Entity* ent;
     if ((ent = FindEntityInListBySubtype(0x3, 0x13, 0x4))) {
-        if (ent->entityType.form != 4) {
+        if (ent->type != 4) {
             return;
         }
     }
diff --git a/src/manager/manager27.c b/src/manager/manager27.c
index 3463e825..b2e0e15a 100644
--- a/src/manager/manager27.c
+++ b/src/manager/manager27.c
@@ -18,10 +18,10 @@ const u8 gUnk_08108D20[] = { 0x6F, 0x70, 0x71, 0x72, 0x71, 0x70 };
 void Manager27(Entity* this) {
 
     gUnk_08108D10[this->action](this);
-    if (CheckLocalFlagByOffset(0x300, this->entityType.form + 0x67)) {
-        gScreenTransition.field_0xac |= (1 << (this->entityType).form);
+    if (CheckLocalFlagByOffset(0x300, this->type + 0x67)) {
+        gScreenTransition.field_0xac |= (1 << this->type);
     } else {
-        gScreenTransition.field_0xac &= ~(1 << (this->entityType).form);
+        gScreenTransition.field_0xac &= ~(1 << this->type);
     }
 }
 
@@ -75,5 +75,5 @@ void sub_0805C908(Entity* this) {
 }
 
 u32 sub_0805C920(Entity* this) {
-    return CheckLocalFlagByOffset(0x300, (this->entityType).form + 0x67);
+    return CheckLocalFlagByOffset(0x300, this->type + 0x67);
 }
diff --git a/src/manager/manager28.c b/src/manager/manager28.c
index 9f518f1c..af59e09e 100644
--- a/src/manager/manager28.c
+++ b/src/manager/manager28.c
@@ -115,8 +115,7 @@ Entity* Manager28_FindMatchingEntity(EntityData* unk1) {
     y = unk1->yPos + gRoomControls.roomOriginY;
     tmp = &gUnk_03003D90;
     for (i = tmp->first; (u32)i != (u32)tmp; i = i->next) {
-        if (x == i->x.HALF.HI && y == i->y.HALF.HI && unk1->subtype == i->entityType.subtype &&
-            3 == i->entityType.type && unk1->form == i->entityType.form) {
+        if (x == i->x.HALF.HI && y == i->y.HALF.HI && unk1->subtype == i->id && 3 == i->kind && unk1->form == i->type) {
             return i;
         }
     }
diff --git a/src/manager/manager2E.c b/src/manager/manager2E.c
index cc07c980..6dd5ea3e 100644
--- a/src/manager/manager2E.c
+++ b/src/manager/manager2E.c
@@ -5,7 +5,7 @@ extern void (*const gUnk_08108D3C[])(Entity*);
 extern void (*const gUnk_08108D44[])(Entity*);
 
 void sub_0805D250(Entity* this) {
-    gUnk_08108D3C[this->entityType.form](this);
+    gUnk_08108D3C[this->type](this);
 }
 
 void sub_0805D268(Entity* this) {
diff --git a/src/manager/managerB.c b/src/manager/managerB.c
index 5201322b..e6e43a12 100644
--- a/src/manager/managerB.c
+++ b/src/manager/managerB.c
@@ -101,7 +101,7 @@ void ManagerB_LoadFight(Manager* this) {
     if (prop) {
         while (*((u8*)prop) != 0xFF) {
             ent = LoadRoomEntity(prop++);
-            if (ent && (ent->entityType.type == 3)) {
+            if (ent && (ent->kind == 3)) {
                 ent->field_0x6c.HALF.HI |= 0x40;
                 ManagerBHelper_Monitor(monitor, ent, counter++);
             }
diff --git a/src/npc/beedle.c b/src/npc/beedle.c
index 654ff301..9e7a5755 100644
--- a/src/npc/beedle.c
+++ b/src/npc/beedle.c
@@ -99,14 +99,14 @@ void sub_08063410(Entity* this) {
             return;
         }
         this->action++;
-        if (this->entityType.form != 0) {
+        if (this->type != 0) {
             this->hitbox = &gUnk_0810C894;
-            this->entityType.parameter = 0;
+            this->type2 = 0;
         }
         sub_0807DD64(this);
         sub_08078778(this);
     }
-    if (this->entityType.form != 0) {
+    if (this->type != 0) {
         sub_0806346C(this);
     }
     sub_0807DDAC(this, NULL);
@@ -141,24 +141,24 @@ void sub_0806346C(Entity* this) {
     iVar2 >>= 4;
 
     bVar1 = gUnk_0810C8F0[(gPlayerEntity.animationState >> 1) + iVar3 * 4 + iVar2 * 0x18];
-    if (bVar1 != this->entityType.parameter) {
+    if (bVar1 != this->type2) {
         gUnk_0810C89C_struct* temp = &gUnk_0810C89C[bVar1];
         sub_08078850(this, 1, temp->unk_04, temp);
-        this->entityType.parameter = bVar1;
+        this->type2 = bVar1;
     }
 }
 
 void sub_080634E4(Entity* this, u32* param_1) {
-    param_1[1] = this->entityType.parameter;
+    param_1[1] = this->type2;
 }
 
 void sub_080634EC(Entity* this) {
-    gRoomVars.itemForSaleIndex = gUnk_0810C88C[this->entityType.parameter];
+    gRoomVars.itemForSaleIndex = gUnk_0810C88C[this->type2];
 }
 
 void sub_08063504(Entity* this, u32* param_2) {
     u32 uVar1;
 
-    uVar1 = sub_080544DC(gUnk_0810C88C[this->entityType.parameter]);
+    uVar1 = sub_080544DC(gUnk_0810C88C[this->type2]);
     param_2[5] = BOOLCAST(uVar1);
 }
diff --git a/src/npc/bigGoron.c b/src/npc/bigGoron.c
index ed49aa45..2874115f 100644
--- a/src/npc/bigGoron.c
+++ b/src/npc/bigGoron.c
@@ -16,7 +16,7 @@ extern void sub_0806D02C(Entity*);
 extern Entity* FindEntityInListByForm(u32, u32, u32, u32, u32);
 
 void BigGoron(Entity* this) {
-    gUnk_081140D4[this->entityType.form](this);
+    gUnk_081140D4[this->type](this);
 }
 
 void sub_0806CF30(Entity* this) {
diff --git a/src/npc/bladeBrothers.c b/src/npc/bladeBrothers.c
index ad9c84bf..913f30cc 100644
--- a/src/npc/bladeBrothers.c
+++ b/src/npc/bladeBrothers.c
@@ -48,7 +48,7 @@ void sub_08068A1C(Entity* this) {
     u8 bVar1;
     int offset;
 
-    (this->entityType).parameter = (this->entityType).form;
+    this->type2 = this->type;
     if (gScreenTransition.field_0x24[8] != 0) {
         offset = 6;
         bVar1 = 3;
@@ -92,13 +92,13 @@ void sub_08068AA4(Entity* this) {
     u8 bVar1;
 
     this->action = 1;
-    if (this->entityType.form != 0) {
-        this->entityType.parameter++;
-        this->entityType.parameter &= 7;
-        if (this->entityType.parameter == 0) {
-            this->entityType.parameter += 1;
+    if (this->type != 0) {
+        this->type2++;
+        this->type2 &= 7;
+        if (this->type2 == 0) {
+            this->type2 += 1;
         }
-        sub_0801D2B4(this, gUnk_081115DC[this->entityType.parameter]);
+        sub_0801D2B4(this, gUnk_081115DC[this->type2]);
     }
 }
 
@@ -175,8 +175,8 @@ void sub_08068C28(Entity* this) {
     u8 bVar1;
     u32 uVar2;
 
-    this->actionDelay = gUnk_08111623[(this->entityType).form];
-    if ((this->entityType).form == 1) {
+    this->actionDelay = gUnk_08111623[this->type];
+    if (this->type == 1) {
         if (GetInventoryValue(0x48)) {      // spin attack
             if (!GetInventoryValue(0x4b)) { // rock breaker
                 this->actionDelay = 1;
@@ -205,7 +205,7 @@ void sub_08068CA0(Entity* param_1, Entity* param_2) {
     u8 bVar1;
     u32 uVar2;
 
-    bVar1 = (param_1->entityType).form;
+    bVar1 = param_1->type;
     if (bVar1 == 1) {
         *(u32*)&param_2->animationState = bVar1;
         uVar2 = GetInventoryValue(0x48); // spin attack
diff --git a/src/npc/carpenter.c b/src/npc/carpenter.c
index db160475..f4bdb04a 100644
--- a/src/npc/carpenter.c
+++ b/src/npc/carpenter.c
@@ -23,7 +23,7 @@ void Carpenter(Entity* this) {
     }
     switch (this->action) {
         case 0:
-            if (!LoadExtraSpriteData(this, gUnk_08110CA8 + this->entityType.form * 4))
+            if (!LoadExtraSpriteData(this, gUnk_08110CA8 + this->type * 4))
                 break;
             this->action = 1;
             this->field_0x68.HALF.HI = 0;
@@ -35,8 +35,8 @@ void Carpenter(Entity* this) {
                 this->action = 2;
                 this->interactType = 0;
                 this->field_0x68.HALF.HI = this->animIndex;
-                InitializeAnimation(this, sub_0806F5A4(GetFacingDirection(this, &gPlayerEntity)) + 4 +
-                                              (this->entityType.form * 8));
+                InitializeAnimation(this,
+                                    sub_0806F5A4(GetFacingDirection(this, &gPlayerEntity)) + 4 + (this->type * 8));
                 sub_0806F118(this);
             } else {
                 sub_0807DDAC(this, 0);
@@ -54,7 +54,7 @@ void Carpenter(Entity* this) {
 }
 
 void Carpenter_Head(Entity* this) {
-    if ((this->entityType).form < 2) {
+    if (this->type < 2) {
         SetExtraSpriteFrame(this, 0, this->frames.all & 0xffffff7f);
         SetExtraSpriteFrame(this, 1, this->frameIndex);
         SetExtraSpriteFrame(this, 2, this->frameSpriteSettings & 0x3f);
@@ -70,5 +70,5 @@ void Carpenter_Head(Entity* this) {
 }
 
 void sub_080672b0(Entity* this, u32 param_2) {
-    InitializeAnimation(this, *(u32*)(param_2 + 4) + (this->animationState >> 1) + this->entityType.form * 8);
+    InitializeAnimation(this, *(u32*)(param_2 + 4) + (this->animationState >> 1) + this->type * 8);
 }
diff --git a/src/npc/cat.c b/src/npc/cat.c
index 1ec7df88..c00a41ef 100644
--- a/src/npc/cat.c
+++ b/src/npc/cat.c
@@ -10,7 +10,7 @@ extern void (*gCat[9])(Entity*);
 void Cat(Entity* ent) {
     gCat[ent->action](ent);
     sub_08067C44(ent);
-    if (((ent->flags & 128) == 0) && ((ent->entityType).form != 5)) {
+    if (((ent->flags & 128) == 0) && (ent->type != 5)) {
         sub_0806ED78(ent);
     }
 }
diff --git a/src/npc/cow.c b/src/npc/cow.c
index db7707fd..aeb62982 100644
--- a/src/npc/cow.c
+++ b/src/npc/cow.c
@@ -28,7 +28,7 @@ void sub_08068FC0(Entity* ent) {
     u32 r2;
 
     ent->action = 1;
-    ent->animationState = ent->entityType.parameter;
+    ent->animationState = ent->type2;
     ent->nonPlanarMovement = 0x40;
 
     ent->field_0x6c.HALF.HI = 0xFF;
@@ -181,7 +181,7 @@ void sub_080691E0(Entity* ent) {
 
 // Show dialogue
 void Cow_ShowDialogue(Entity* ent) {
-    ShowNPCDialogue(ent, &gUnk_08111938[ent->entityType.form]);
+    ShowNPCDialogue(ent, &gUnk_08111938[ent->type]);
 }
 
 void sub_0806920C(Entity* ent) {
diff --git a/src/npc/epona.c b/src/npc/epona.c
index a685150f..a79ccd48 100644
--- a/src/npc/epona.c
+++ b/src/npc/epona.c
@@ -50,7 +50,7 @@ void sub_08065A34(Entity* this) {
 }
 
 void sub_08065A50(Entity* this) {
-    ShowNPCDialogue(this, &gUnk_08110080[this->entityType.form]);
+    ShowNPCDialogue(this, &gUnk_08110080[this->type]);
 }
 
 void sub_08065A64(Entity* this) {
diff --git a/src/npc/forestMinish.c b/src/npc/forestMinish.c
index 66933ef3..ce829a81 100644
--- a/src/npc/forestMinish.c
+++ b/src/npc/forestMinish.c
@@ -41,7 +41,7 @@ void ForestMinish(Entity* this) {
                 this->field_0x68.HALF.HI = this->animationState = this->actionDelay << 1;
                 this->actionDelay = 0;
                 sub_0805E3A0(this, 2);
-                StartCutscene(this, (u16*)gUnk_08109D18[this->entityType.parameter]);
+                StartCutscene(this, (u16*)gUnk_08109D18[this->type2]);
                 sub_0807DD50(this);
             }
             break;
@@ -161,7 +161,7 @@ void sub_080601D4(Entity* this) {
 }
 
 void sub_08060208(Entity* this) {
-    ShowNPCDialogue(this, &gUnk_08109DC8[this->entityType.parameter * 0x4]);
+    ShowNPCDialogue(this, &gUnk_08109DC8[this->type2 * 0x4]);
 }
 
 void sub_0806021C(Entity* this) {
@@ -181,11 +181,11 @@ void sub_0806021C(Entity* this) {
     if (GetInventoryValue(0x13)) {
         uVar2 = 3;
     }
-    ShowNPCDialogue(this, gUnk_08109DC8 + this->entityType.parameter * 0x4 + uVar2);
+    ShowNPCDialogue(this, gUnk_08109DC8 + this->type2 * 0x4 + uVar2);
 }
 
 void sub_0806025C(Entity* this) {
-    ShowNPCDialogue(this, &gUnk_08109DC8[this->entityType.parameter * 0x4]);
+    ShowNPCDialogue(this, &gUnk_08109DC8[this->type2 * 0x4]);
 }
 
 void sub_08060270(Entity* this) {
diff --git a/src/npc/goron.c b/src/npc/goron.c
index a7d4ee54..0203969c 100644
--- a/src/npc/goron.c
+++ b/src/npc/goron.c
@@ -112,7 +112,7 @@ void sub_080694B0(Entity* this) {
 }
 
 void sub_080694D8(Entity* this) {
-    ShowNPCDialogue(this, &gUnk_08111A94[this->entityType.form]);
+    ShowNPCDialogue(this, &gUnk_08111A94[this->type]);
 }
 
 void sub_080694EC(Entity* this) {
diff --git a/src/npc/guard.c b/src/npc/guard.c
index e225c33b..782253ee 100644
--- a/src/npc/guard.c
+++ b/src/npc/guard.c
@@ -66,15 +66,15 @@ void sub_08063D44(Entity* this) {
     if (gEntCount > 0x46)
         return;
 
-    temp = this->entityType.subtype;
+    temp = this->id;
     temp ^= 0x15;
     idx = BOOLCAST(temp) * 4;
     if (!LoadExtraSpriteData(this, &gUnk_0810F524[idx]))
         return;
 
     InitializeAnimation(this, 4);
-    sub_0806EE04(this, gUnk_0810F6BC[this->entityType.form], 0);
-    switch (this->entityType.form) {
+    sub_0806EE04(this, gUnk_0810F6BC[this->type], 0);
+    switch (this->type) {
         case 0 ... 3:
             ent = sub_080A7EE0(0xc);
             ent->parent = this;
@@ -85,12 +85,12 @@ void sub_08063D44(Entity* this) {
             break;
     }
     this->action++;
-    this->entityType.form = 0;
+    this->type = 0;
     sub_08063DC8(this);
 }
 
 void sub_08063DC8(Entity* this) {
-    if ((this->entityType).form == 0xff) {
+    if (this->type == 0xff) {
         this->action = 2;
         this->actionDelay = 0x1e;
         this->animationState = sub_0806F5A4(GetFacingDirection(this, &gPlayerEntity));
@@ -130,7 +130,7 @@ void sub_08063E90(Entity* this) {
     u32 temp, idx;
     u32 unk;
 
-    temp = this->entityType.subtype;
+    temp = this->id;
     temp ^= 0x15;
     idx = BOOLCAST(temp) * 4;
     if (!LoadExtraSpriteData(this, &gUnk_0810F524[idx]))
@@ -188,7 +188,7 @@ void Guard_Head(Entity* this) {
     uVar2 = this->frames.all & 0x3f;
     pbVar5 = (this->frameIndex & 0x3f);
     uVar4 = this->frameSpriteSettings & 0x3f;
-    if ((this->entityType).subtype == 0x15) {
+    if (this->id == 0x15) {
         if ((this->frameIndex & 0x40) != 0) {
             pbVar5 = pbVar5 + 0x21;
             pbVar3 = 0xffffffff;
@@ -227,7 +227,7 @@ void sub_08064050(Entity* arg0, struct_08064050* arg1) {
     u32 unk;
 
     arg1->unk2 = 0;
-    switch (arg0->entityType.parameter) {
+    switch (arg0->type2) {
         case 0x11:
             arg1->unk2 = 1;
             break;
diff --git a/src/npc/melari.c b/src/npc/melari.c
index ca01de04..38bc4e54 100644
--- a/src/npc/melari.c
+++ b/src/npc/melari.c
@@ -72,7 +72,7 @@ void sub_08068780(Entity* this) {
             }
             this->action = 1;
             this->spriteSettings.b.draw = TRUE;
-            this->animationState = this->entityType.form;
+            this->animationState = this->type;
             sub_0805E3A0(this, 2);
             sub_0807DD50(this);
             break;
diff --git a/src/npc/percy.c b/src/npc/percy.c
index 484ee13b..a2a8fcd8 100644
--- a/src/npc/percy.c
+++ b/src/npc/percy.c
@@ -60,7 +60,7 @@ void sub_0806B41C(Entity* this) {
             if (LoadExtraSpriteData(this, &gUnk_08112E1C)) {
                 this->action = 1;
                 this->spriteSettings.b.draw = 1;
-                if (this->entityType.parameter == 2) {
+                if (this->type2 == 2) {
                     CreateFx(this, 0x25, 0);
                 }
                 sub_0807DD50(this);
@@ -90,7 +90,7 @@ void sub_0806B41C(Entity* this) {
 }
 
 void sub_0806B4F0(Entity* this) {
-    ShowNPCDialogue(this, &gUnk_08112E2C[this->entityType.parameter]);
+    ShowNPCDialogue(this, &gUnk_08112E2C[this->type2]);
 }
 
 void sub_0806B504(Entity* this) {
diff --git a/src/npc/postman.c b/src/npc/postman.c
index 266c3fb6..532f129f 100644
--- a/src/npc/postman.c
+++ b/src/npc/postman.c
@@ -53,8 +53,8 @@ void sub_08060428(Entity* this) {
 
     this->actionDelay = 0x5a;
     this->nonPlanarMovement = 0x180;
-    if (this->entityType.parameter != 0) {
-        data = GetCurrentRoomProperty(this->entityType.parameter);
+    if (this->type2 != 0) {
+        data = GetCurrentRoomProperty(this->type2);
     } else {
         data = NULL;
     }
diff --git a/src/npc/rem.c b/src/npc/rem.c
index 6c45830f..a0b87267 100644
--- a/src/npc/rem.c
+++ b/src/npc/rem.c
@@ -13,7 +13,7 @@ extern void (*gUnk_08112278[])(Entity*);
 extern void gUnk_08012F0C;
 
 void Rem(Entity* this) {
-    gUnk_08112260[this->entityType.form](this);
+    gUnk_08112260[this->type](this);
 }
 
 void sub_0806a370(Entity* this) {
diff --git a/src/npc/syrup.c b/src/npc/syrup.c
index 7904ce09..307c75bd 100644
--- a/src/npc/syrup.c
+++ b/src/npc/syrup.c
@@ -24,7 +24,7 @@ void sub_0806A1F8(Entity* this) {
     u32 iVar1;
     SpriteLoadData* paVar2;
 
-    (this->entityType).form == 0 ? (paVar2 = &gUnk_081121B4) : (paVar2 = &gUnk_081121C4);
+    this->type == 0 ? (paVar2 = &gUnk_081121B4) : (paVar2 = &gUnk_081121C4);
 
     iVar1 = LoadExtraSpriteData(this, paVar2);
     if (iVar1) {
diff --git a/src/npc/teachers.c b/src/npc/teachers.c
index 9a9f0509..eaae979d 100644
--- a/src/npc/teachers.c
+++ b/src/npc/teachers.c
@@ -19,7 +19,7 @@ extern Dialog gUnk_08113930[];
 void Teachers(Entity* this) {
     switch (this->action) {
         case 0:
-            if (LoadExtraSpriteData(this, &gUnk_08113910[this->entityType.form * 4])) {
+            if (LoadExtraSpriteData(this, &gUnk_08113910[this->type * 4])) {
                 this->action = 1;
                 this->spriteSettings.b.draw = TRUE;
                 this->animationState = this->actionDelay;
@@ -61,7 +61,7 @@ void Teachers_Head(Entity* this) {
     uVar3 = this->frames.all & -0x81;
     bVar1 = this->frameIndex;
     bVar2 = this->frameSpriteSettings & 0x3f;
-    if ((this->entityType).form == 0) {
+    if (this->type == 0) {
         SetExtraSpriteFrame(this, 0, (uVar3 + 3));
         SetExtraSpriteFrame(this, 1, bVar1);
         SetSpriteSubEntryOffsetData1(this, 1, 0);
@@ -83,12 +83,12 @@ void sub_0806C70C(Entity* this) {
     if (offset < 0)
         offset = 0;
 
-    ShowNPCDialogue(this, gUnk_08113930 + this->entityType.form * 8 + offset);
+    ShowNPCDialogue(this, gUnk_08113930 + this->type * 8 + offset);
 }
 
 void Teachers_Fusion(Entity* this) {
     if (this->action == 0) {
-        if (LoadExtraSpriteData(this, &gUnk_08113910[this->entityType.form * 4])) {
+        if (LoadExtraSpriteData(this, &gUnk_08113910[this->type * 4])) {
             this->action++;
             this->spriteSettings.b.draw = TRUE;
             InitializeAnimation(this, 2);
diff --git a/src/npc/townMinish.c b/src/npc/townMinish.c
index 9217fdd7..3f97b540 100644
--- a/src/npc/townMinish.c
+++ b/src/npc/townMinish.c
@@ -43,7 +43,7 @@ void TownMinish(Entity* this) {
 }
 
 void sub_0806ABFC(Entity* this) {
-    SpriteLoadData* SpriteLoadData = &gUnk_08112674[this->entityType.form * 4];
+    SpriteLoadData* SpriteLoadData = &gUnk_08112674[this->type * 4];
     if (!LoadExtraSpriteData(this, SpriteLoadData)) {
         return;
     }
@@ -93,7 +93,7 @@ void sub_0806ACC4(Entity* this) {
     u8 delay;
     switch (this->action) {
         case 0:
-            if (LoadExtraSpriteData(this, &gUnk_08112674[this->entityType.form * 4]) == 0)
+            if (LoadExtraSpriteData(this, &gUnk_08112674[this->type * 4]) == 0)
                 return;
 
             this->action = 1;
@@ -114,13 +114,13 @@ void sub_0806ACC4(Entity* this) {
             } else {
                 sub_0807DDAC(this, NULL);
                 sub_0806AEA8(this);
-                if (this->entityType.parameter == 10 && this->interactType) {
+                if (this->type2 == 10 && this->interactType) {
                     this->action = 2;
                     this->interactType = 0;
                     InitializeAnimation(this, sub_0806F5A4(GetFacingDirection(this, &gPlayerEntity)) + 8);
                     sub_0806AFE8(this, *(s32**)&this->cutsceneBeh);
                 }
-                if (this->entityType.form == 1) {
+                if (this->type == 1) {
                     u8 idx = gPlayerEntity.animationState >> 1;
                     sub_08078850(this, 1, gUnk_081126E4[idx], &gUnk_081126D4[idx]);
                 }
@@ -250,12 +250,12 @@ void sub_0806AFBC(Entity* this) {
     if (idx < 0)
         idx = 0;
 
-    ShowNPCDialogue(this, gUnk_081126F0 + this->entityType.parameter * 8 + idx);
+    ShowNPCDialogue(this, gUnk_081126F0 + this->type2 * 8 + idx);
 }
 
 void sub_0806AFE8(Entity* this, s32* unk) {
     unk[5] = 0;
-    gUnk_08112BF0[this->entityType.parameter](this, unk);
+    gUnk_08112BF0[this->type2](this, unk);
 }
 
 void sub_0806B004(Entity* this, int* unk) {
@@ -304,7 +304,7 @@ void sub_0806B098(Entity* this) {
             idx = BOOLCAST(f);
         }
     }
-    TextboxNoOverlap(gUnk_08112C50[(this->entityType.parameter - 7) * 3 + idx], this);
+    TextboxNoOverlap(gUnk_08112C50[(this->type2 - 7) * 3 + idx], this);
 }
 
 void sub_0806B0E0(Entity* this) {
@@ -339,7 +339,7 @@ void sub_0806B134(Entity* this) {
 
 void TownMinish_Fusion(Entity* this) {
     if (this->action == 0) {
-        if (LoadExtraSpriteData(this, &gUnk_08112674[this->entityType.form * 4])) {
+        if (LoadExtraSpriteData(this, &gUnk_08112674[this->type * 4])) {
             this->action++;
             this->spriteSettings.b.draw = 1;
             InitializeAnimation(this, 6);
diff --git a/src/npc/townsperson.c b/src/npc/townsperson.c
index e7d815db..dbc50909 100644
--- a/src/npc/townsperson.c
+++ b/src/npc/townsperson.c
@@ -58,9 +58,9 @@ void Townsperson(Entity* this) {
 }
 
 void sub_08061BC8(Entity* this) {
-    if (LoadExtraSpriteData(this, gUnk_0810B6EC[this->entityType.form])) {
+    if (LoadExtraSpriteData(this, gUnk_0810B6EC[this->type])) {
         this->animationState = 2;
-        this->field_0xf = this->entityType.form + 1;
+        this->field_0xf = this->type + 1;
         this->action++;
         sub_08061CB4(this, 2);
     }
@@ -84,15 +84,14 @@ void sub_08061C00(Entity* this) {
     sub_0806ED78(this);
     if (this->interactType != 0) {
         this->interactType = 0;
-        TextboxNoOverlapFollow(this->entityType.parameter + 0xa01);
+        TextboxNoOverlapFollow(this->type2 + 0xa01);
     }
 }
 
 #if NON_MATCHING
 void Townsperson_Head(Entity* this) {
-    SetExtraSpriteFrame(this, 0,
-                        *(gUnk_0810B78C + (this->animIndex & 3)) + gUnk_0810B680[this->entityType.form].frame1);
-    SetExtraSpriteFrame(this, 1, this->frameIndex + gUnk_0810B680[this->entityType.form].frame2);
+    SetExtraSpriteFrame(this, 0, *(gUnk_0810B78C + (this->animIndex & 3)) + gUnk_0810B680[this->type].frame1);
+    SetExtraSpriteFrame(this, 1, this->frameIndex + gUnk_0810B680[this->type].frame2);
     SetSpriteSubEntryOffsetData1(this, 1, 0);
     sub_0807000C(this);
 }
@@ -110,14 +109,14 @@ void sub_08061CB4(Entity* this, u32 arg1) {
         GetNextFrame(this);
     }
     if (this->frameDuration == 0xff) {
-        this->frameDuration = gUnk_0810B680[this->entityType.form].unk2;
+        this->frameDuration = gUnk_0810B680[this->type].unk2;
     }
 }
 
 void sub_08061CEC(Entity* this) {
     u32 uVar2;
 
-    if (LoadExtraSpriteData(this, gUnk_0810B6EC[this->entityType.form])) {
+    if (LoadExtraSpriteData(this, gUnk_0810B6EC[this->type])) {
         this->action = 1;
         this->spriteSettings.b.draw = TRUE;
         this->animationState = this->actionDelay;
@@ -147,7 +146,7 @@ void sub_08061D64(Entity* this) {
         sub_0807DDAC(this, NULL);
         sub_0807DDE4(this);
         if (this->frameDuration == 0xff) {
-            this->frameDuration = gUnk_0810B680[this->entityType.form].unk2;
+            this->frameDuration = gUnk_0810B680[this->type].unk2;
         }
         GetNextFrame(this);
         if (this->interactType != 0) {
@@ -177,7 +176,7 @@ void sub_08061E50(Entity* this) {
 }
 
 void sub_08061E70(Entity* this) {
-    if ((this->entityType).subtype == 6) {
+    if (this->id == 6) {
         sub_08078784(this, this->field_0x68.HALF.LO);
     } else {
         sub_08078778(this);
@@ -215,7 +214,7 @@ void sub_08061E90(Entity* this, Entity* arg1) {
         }
         this->direction = (u8)animIndex;
         this->animationState = sub_0806F5B0(animIndex);
-        this->nonPlanarMovement = gUnk_0810B74A[this->entityType.form];
+        this->nonPlanarMovement = gUnk_0810B74A[this->type];
     }
     animIndex = (this->animationState >> 1) + 4;
     if (animIndex != this->animIndex) {
@@ -274,7 +273,7 @@ void sub_08061FE4(Entity* this) {
 }
 
 void sub_08061FF4(Entity* this) {
-    TextboxNoOverlap(gUnk_0810B790[this->entityType.form], this);
+    TextboxNoOverlap(gUnk_0810B790[this->type], this);
 }
 
 void sub_0806200C(Entity* this) {
@@ -296,12 +295,12 @@ void sub_0806200C(Entity* this) {
 void sub_08062048(Entity* this) {
     int iVar1;
 
-    if ((this->entityType).subtype == 6) {
+    if (this->id == 6) {
         iVar1 = gSave.unk8 - 2;
         if (iVar1 < 0) {
             iVar1 = 0;
         }
-        ShowNPCDialogue(this, gUnk_0810B7C0 + this->entityType.form * 0x8 + iVar1);
+        ShowNPCDialogue(this, gUnk_0810B7C0 + this->type * 0x8 + iVar1);
     } else {
         TextboxNoOverlap(0, this);
     }
@@ -309,7 +308,7 @@ void sub_08062048(Entity* this) {
 
 void Townsperson_Fusion(Entity* this) {
     if (this->action == 0) {
-        if (LoadExtraSpriteData(this, gUnk_0810B6EC[this->entityType.form]) == 0) {
+        if (LoadExtraSpriteData(this, gUnk_0810B6EC[this->type]) == 0) {
             return;
         }
         this->action++;
diff --git a/src/npc/windTribespeople.c b/src/npc/windTribespeople.c
index 05dca467..9429ccd6 100644
--- a/src/npc/windTribespeople.c
+++ b/src/npc/windTribespeople.c
@@ -35,7 +35,7 @@ void WindTribespeople(Entity* this) {
 void sub_0806C798(Entity* this) {
     s32 iVar1;
 
-    iVar1 = LoadExtraSpriteData(this, gUnk_08113A1C + (this->entityType.form * 4));
+    iVar1 = LoadExtraSpriteData(this, gUnk_08113A1C + (this->type * 4));
     if (iVar1 != 0) {
         this->action = 1;
         this->spriteSettings.b.draw = 1;
@@ -55,9 +55,8 @@ void sub_0806C7D4(Entity* this) {
         sub_0806F118(this);
     } else {
         sub_0807DD94(this, NULL);
-        if ((this->entityType.parameter == 3) && (!CheckGlobalFlag(WARP_EVENT_END)) && (CheckLocalFlag(0x63)) &&
-            (CheckRoomFlag(0))) {
-            (this->entityType).parameter = 7;
+        if ((this->type2 == 3) && (!CheckGlobalFlag(WARP_EVENT_END)) && (CheckLocalFlag(0x63)) && (CheckRoomFlag(0))) {
+            this->type2 = 7;
             sub_0807DD80(this, &gUnk_08014A80);
         }
     }
@@ -90,7 +89,7 @@ void WindTribespeople_Head(Entity* this) {
     u8 pbVar3;
 
     pbVar3 = (this->frames.all & 0x3F);
-    if (this->entityType.form == 4) {
+    if (this->type == 4) {
         SetExtraSpriteFrame(this, 0, 9);
         SetExtraSpriteFrame(this, 1, pbVar3);
         SetExtraSpriteFrame(this, 2, this->frameIndex);
@@ -115,7 +114,7 @@ void WindTribespeople_Head(Entity* this) {
 // body and head entities?
 void sub_0806C90C(Entity* param_1, Entity* param_2) {
     *(u32*)&param_2->animationState = 0;
-    gUnk_08113A8C[param_1->entityType.parameter](param_1, param_2);
+    gUnk_08113A8C[param_1->type2](param_1, param_2);
 }
 
 void sub_0806C928(Entity* this) {
diff --git a/src/object.c b/src/object.c
index e27e6cf2..b5eff460 100644
--- a/src/object.c
+++ b/src/object.c
@@ -3,198 +3,198 @@
 #include "object.h"
 
 void (*const gObjectFunctions[])(Entity*) = {
-    /*0x00*/ ItemOnGround,
-    /*0x01*/ DeathFx,
-    /*0x02*/ ItemForSale,
-    /*0x03*/ Button,
-    /*0x04*/ Object4,
-    /*0x05*/ Pot,
-    /*0x06*/ Object6,
-    /*0x07*/ BlockPushed,
-    /*0x08*/ LockedDoor,
-    /*0x09*/ Object9,
-    /*0x0a*/ ObjectA,
-    /*0x0b*/ ObjectB,
-    /*0x0c*/ ChestSpawner,
-    /*0x0d*/ ObjectD,
-    /*0x0e*/ ObjectE,
-    /*0x0f*/ SpecialFx,
-    /*0x10*/ Object10,
-    /*0x11*/ Object11,
-    /*0x12*/ Object12,
-    /*0x13*/ Railtrack,
-    /*0x14*/ LilypadLarge,
-    /*0x15*/ Object15,
-    /*0x16*/ FloatingPlatform,
-    /*0x17*/ Object17,
-    /*0x18*/ EvilSpirit,
-    /*0x19*/ HouseDoorExterior,
-    /*0x1a*/ Object1A,
-    /*0x1b*/ GreatFairy,
-    /*0x1c*/ Object1C,
-    /*0x1d*/ Object1D,
-    /*0x1e*/ Object1E,
-    /*0x1f*/ Object1F,
-    /*0x20*/ Object20,
-    /*0x21*/ Object21,
-    /*0x22*/ FigurineDevice,
-    /*0x23*/ EyeSwitch,
-    /*0x24*/ Object24,
-    /*0x25*/ BigBarrel,
-    /*0x26*/ Object26,
-    /*0x27*/ PushableStatue,
-    /*0x28*/ Object28,
-    /*0x29*/ Object29,
-    /*0x2a*/ Object2A,
-    /*0x2b*/ Object2B,
-    /*0x2c*/ Beanstalk,
-    /*0x2d*/ Smoke,
-    /*0x2e*/ PushableRock,
-    /*0x2f*/ HittableLever,
-    /*0x30*/ Object30,
-    /*0x31*/ Object31,
-    /*0x32*/ PullableMushroom,
-    /*0x33*/ Bollard,
-    /*0x34*/ WarpPoint,
-    /*0x35*/ Object35,
-    /*0x36*/ Object36,
-    /*0x37*/ Object37,
-    /*0x38*/ JarPortal,
-    /*0x39*/ BossDoor,
-    /*0x3a*/ Object3A,
-    /*0x3b*/ MacroMushromStalks,
-    /*0x3c*/ MacroPlayer,
-    /*0x3d*/ Object3D,
-    /*0x3e*/ Object3E,
-    /*0x3f*/ GiantLeaf,
-    /*0x40*/ Fairy,
-    /*0x41*/ LadderUp,
-    /*0x42*/ Object42,
-    /*0x43*/ Object43,
-    /*0x44*/ Object44,
-    /*0x45*/ Object45,
-    /*0x46*/ GiantBookLadder,
-    /*0x47*/ HeartContainer,
-    /*0x48*/ FileScreenObjects,
-    /*0x49*/ Object49,
-    /*0x4a*/ BackgroundCloud,
-    /*0x4b*/ Object4B,
-    /*0x4c*/ PushableFurniture,
-    /*0x4d*/ Furniture,
-    /*0x4e*/ MinishSizedEntrance,
-    /*0x4f*/ Archway,
-    /*0x50*/ GiantRock,
-    /*0x51*/ Object51,
-    /*0x52*/ Object52,
-    /*0x53*/ Object53,
-    /*0x54*/ PullableLever,
-    /*0x55*/ Minecart,
-    /*0x56*/ ThoughtBubble,
-    /*0x57*/ HiddenLadderDown,
-    /*0x58*/ GentariCurtain,
-    /*0x59*/ LavaPlatform,
-    /*0x5a*/ Object5A,
-    /*0x5b*/ Object5B,
-    /*0x5c*/ Mask,
-    /*0x5d*/ HouseDoorInterior,
-    /*0x5e*/ Whirlwind,
-    /*0x5f*/ ObjectBlockingStairs,
-    /*0x60*/ SwordsmanNewsletter,
-    /*0x61*/ Object61,
-    /*0x62*/ GiantTwig,
-    /*0x63*/ Object63,
-    /*0x64*/ Object64,
-    /*0x65*/ LadderHoleInBookshelf,
-    /*0x66*/ Object66,
-    /*0x67*/ Object67,
-    /*0x68*/ Object68,
-    /*0x69*/ Object69,
-    /*0x6a*/ Object6A,
-    /*0x6b*/ CrenalBeanSprout,
-    /*0x6c*/ MinecartDoor,
-    /*0x6d*/ ObjectOnPillar,
-    /*0x6e*/ MineralWaterSource,
-    /*0x6f*/ MinishSizedArchway,
-    /*0x70*/ Object70,
-    /*0x71*/ PushableGrave,
-    /*0x72*/ Object72,
-    /*0x73*/ LilypadSmall,
-    /*0x74*/ Object74,
-    /*0x75*/ Object75,
-    /*0x76*/ Object76,
-    /*0x77*/ Bell,
-    /*0x78*/ MacroDecoration,
-    /*0x79*/ Object79,
-    /*0x7a*/ Steam,
-    /*0x7b*/ PushableLever,
-    /*0x7c*/ MacroShoes,
-    /*0x7d*/ ObjectOnSpinyBeetle,
-    /*0x7e*/ Object7E,
-    /*0x7f*/ PicoBloom,
-    /*0x80*/ Object80,
-    /*0x81*/ Object81,
-    /*0x82*/ BigVortex,
-    /*0x83*/ BigPushableLever,
-    /*0x84*/ SmallIceBlock,
-    /*0x85*/ BigIceBlock,
-    /*0x86*/ Object86,
-    /*0x87*/ Object87,
-    /*0x88*/ MacroBook,
-    /*0x89*/ Object89,
-    /*0x8a*/ Object8A,
-    /*0x8b*/ Object8B,
-    /*0x8c*/ Book,
-    /*0x8d*/ Fireplace,
-    /*0x8e*/ Object8E,
-    /*0x8f*/ FrozenWaterElement,
-    /*0x90*/ Object90,
-    /*0x91*/ Object91,
-    /*0x92*/ BakerOven,
-    /*0x93*/ Object93,
-    /*0x94*/ WindTribeFlag,
-    /*0x95*/ Bird,
-    /*0x96*/ Object96,
-    /*0x97*/ Object97,
-    /*0x98*/ Object98,
-    /*0x99*/ Object99,
-    /*0x9a*/ MacroAcorn,
-    /*0x9b*/ Object9B,
-    /*0x9c*/ TreeHidingPortal,
-    /*0x9d*/ LightableSwitch,
-    /*0x9e*/ Object9E,
-    /*0x9f*/ Fan,
-    /*0xa0*/ ObjectA0,
-    /*0xa1*/ PalaceArchway,
-    /*0xa2*/ ObjectA2,
-    /*0xa3*/ Cloud,
-    /*0xa4*/ MinishLight,
-    /*0xa5*/ ObjectA5,
-    /*0xa6*/ ObjectA6,
-    /*0xa7*/ ObjectA7,
-    /*0xa8*/ ObjectA8,
-    /*0xa9*/ ObjectA9,
-    /*0xaa*/ WaterfallOpening,
-    /*0xab*/ ObjectAB,
-    /*0xac*/ FourElements,
-    /*0xad*/ ObjectAD,
-    /*0xae*/ FloatingBlock,
-    /*0xaf*/ ObjectAF,
-    /*0xb0*/ MetalDoor,
-    /*0xb1*/ JailBars,
-    /*0xb2*/ ObjectB2,
-    /*0xb3*/ ObjectB3,
-    /*0xb4*/ ObjectB4,
-    /*0xb5*/ ObjectB5,
-    /*0xb6*/ ObjectB6,
-    /*0xb7*/ Well,
-    /*0xb8*/ WindTribeTeleporter,
-    /*0xb9*/ ObjectB9,
-    /*0xba*/ ObjectBA,
-    /*0xbb*/ Windcrest,
-    /*0xbc*/ LitArea,
-    /*0xbd*/ ObjectBD,
-    /*0xbe*/ Pinwheel,
-    /*0xbf*/ ObjectBF,
-    /*0xc0*/ EnemyItem,
-    /*0xc1*/ ObjectC1
+    [GROUND_ITEM] = ItemOnGround,
+    [DEATH_FX] = DeathFx,
+    [SHOP_ITEM] = ItemForSale,
+    [BUTTON] = Button,
+    [OBJECT_4] = Object4,
+    [POT] = Pot,
+    [OBJECT_6] = Object6,
+    [PUSHED_BLOCK] = BlockPushed,
+    [LOCKED_DOOR] = LockedDoor,
+    [OBJECT_9] = Object9,
+    [OBJECT_A] = ObjectA,
+    [OBJECT_B] = ObjectB,
+    [CHEST_SPAWNER] = ChestSpawner,
+    [OBJECT_D] = ObjectD,
+    [OBJECT_E] = ObjectE,
+    [SPECIAL_FX] = SpecialFx,
+    [OBJECT_10] = Object10,
+    [OBJECT_11] = Object11,
+    [OBJECT_12] = Object12,
+    [RAILTRACK] = Railtrack,
+    [LILYPAD_LARGE] = LilypadLarge,
+    [OBJECT_15] = Object15,
+    [FLOATING_PLATFORM] = FloatingPlatform,
+    [OBJECT_17] = Object17,
+    [EVIL_SPIRIT] = EvilSpirit,
+    [HOUSE_DOOR_EXT] = HouseDoorExterior,
+    [OBJECT_1A] = Object1A,
+    [GREAT_FAIRY] = GreatFairy,
+    [OBJECT_1C] = Object1C,
+    [OBJECT_1D] = Object1D,
+    [OBJECT_1E] = Object1E,
+    [OBJECT_1F] = Object1F,
+    [OBJECT_20] = Object20,
+    [OBJECT_21] = Object21,
+    [FIGURINE_DEVICE] = FigurineDevice,
+    [EYE_SWITCH] = EyeSwitch,
+    [OBJECT_24] = Object24,
+    [BIG_BARREL] = BigBarrel,
+    [OBJECT_26] = Object26,
+    [PUSHABLE_STATUE] = PushableStatue,
+    [OBJECT_28] = Object28,
+    [OBJECT_29] = Object29,
+    [OBJECT_2A] = Object2A,
+    [OBJECT_2B] = Object2B,
+    [BEANSTALK] = Beanstalk,
+    [SMOKE] = Smoke,
+    [PUSHABLE_ROCK] = PushableRock,
+    [HITTABLE_LEVER] = HittableLever,
+    [OBJECT_30] = Object30,
+    [OBJECT_31] = Object31,
+    [PULLABLE_MUSHROOM] = PullableMushroom,
+    [BOLLARD] = Bollard,
+    [WARP_POINT] = WarpPoint,
+    [OBJECT_35] = Object35,
+    [OBJECT_36] = Object36,
+    [OBJECT_37] = Object37,
+    [JAR_PORTAL] = JarPortal,
+    [BOSS_DOOR] = BossDoor,
+    [OBJECT_3A] = Object3A,
+    [PORTAL_MUSHROOM_STALKS] = MacroMushromStalks,
+    [PORTAL_FALLING_PLAYER] = MacroPlayer,
+    [OBJECT_3D] = Object3D,
+    [OBJECT_3E] = Object3E,
+    [GIANT_LEAF] = GiantLeaf,
+    [FAIRY] = Fairy,
+    [LADDER_UP] = LadderUp,
+    [OBJECT_42] = Object42,
+    [OBJECT_43] = Object43,
+    [OBJECT_44] = Object44,
+    [OBJECT_45] = Object45,
+    [GIANT_BOOK_LADDER] = GiantBookLadder,
+    [HEART_CONTAINER] = HeartContainer,
+    [FILE_SCREEN_OBJECTS] = FileScreenObjects,
+    [OBJECT_49] = Object49,
+    [BACKGROUND_CLOUD] = BackgroundCloud,
+    [OBJECT_4B] = Object4B,
+    [PUSHABLE_FURNITURE] = PushableFurniture,
+    [FURNITURE] = Furniture,
+    [MINISH_SIZED_ENTRANCE] = MinishSizedEntrance,
+    [ARCHWAY] = Archway,
+    [GIANT_ROCK] = GiantRock,
+    [OBJECT_51] = Object51,
+    [OBJECT_52] = Object52,
+    [OBJECT_53] = Object53,
+    [PULLABLE_LEVER] = PullableLever,
+    [MINECART] = Minecart,
+    [THOUGHT_BUBBLE] = ThoughtBubble,
+    [HIDDEN_LADDER_DOWN] = HiddenLadderDown,
+    [GENTARI_CURTAIN] = GentariCurtain,
+    [LAVA_PLATFORM] = LavaPlatform,
+    [OBJECT_5A] = Object5A,
+    [OBJECT_5B] = Object5B,
+    [MASK] = Mask,
+    [HOUSE_DOOR_INT] = HouseDoorInterior,
+    [WHIRLWIND] = Whirlwind,
+    [OBJECT_BLOCKING_STAIRS] = ObjectBlockingStairs,
+    [SWORDSMAN_NEWSLETTER] = SwordsmanNewsletter,
+    [OBJECT_61] = Object61,
+    [GIANT_TWIG] = GiantTwig,
+    [OBJECT_63] = Object63,
+    [OBJECT_64] = Object64,
+    [LADDER_HOLE] = LadderHoleInBookshelf,
+    [OBJECT_66] = Object66,
+    [OBJECT_67] = Object67,
+    [OBJECT_68] = Object68,
+    [OBJECT_69] = Object69,
+    [OBJECT_6A] = Object6A,
+    [CRENAL_BEAN_SPROUT] = CrenalBeanSprout,
+    [MINECART_DOOR] = MinecartDoor,
+    [OBJECT_ON_PILLAR] = ObjectOnPillar,
+    [MINERAL_WATER_SOURCE] = MineralWaterSource,
+    [MINISH_SIZED_ARCHWAY] = MinishSizedArchway,
+    [OBJECT_70] = Object70,
+    [PUSHABLE_GRAVE] = PushableGrave,
+    [OBJECT_72] = Object72,
+    [LILYPAD_SMALL] = LilypadSmall,
+    [OBJECT_74] = Object74,
+    [OBJECT_75] = Object75,
+    [OBJECT_76] = Object76,
+    [BELL] = Bell,
+    [HUGE_DECORATION] = MacroDecoration,
+    [OBJECT_79] = Object79,
+    [STEAM] = Steam,
+    [PUSHABLE_LEVER] = PushableLever,
+    [HUGE_SHOES] = MacroShoes,
+    [OBJECT_ON_BEETLE] = ObjectOnSpinyBeetle,
+    [OBJECT_7E] = Object7E,
+    [PICO_BLOOM] = PicoBloom,
+    [OBJECT_80] = Object80,
+    [OBJECT_81] = Object81,
+    [BIG_VORTEX] = BigVortex,
+    [BIG_PUSHABLE_LEVER] = BigPushableLever,
+    [SMALL_ICE_BLOCK] = SmallIceBlock,
+    [BIG_ICE_BLOCK] = BigIceBlock,
+    [OBJECT_86] = Object86,
+    [OBJECT_87] = Object87,
+    [HUGE_BOOK] = MacroBook,
+    [OBJECT_89] = Object89,
+    [OBJECT_8A] = Object8A,
+    [OBJECT_8B] = Object8B,
+    [BOOK] = Book,
+    [FIREPLACE] = Fireplace,
+    [OBJECT_8E] = Object8E,
+    [FROZEN_WATER_ELEMENT] = FrozenWaterElement,
+    [OBJECT_90] = Object90,
+    [OBJECT_91] = Object91,
+    [BAKER_OVEN] = BakerOven,
+    [OBJECT_93] = Object93,
+    [WIND_TRIBE_FLAG] = WindTribeFlag,
+    [BIRD] = Bird,
+    [OBJECT_96] = Object96,
+    [OBJECT_97] = Object97,
+    [OBJECT_98] = Object98,
+    [OBJECT_99] = Object99,
+    [HUGE_ACORN] = MacroAcorn,
+    [OBJECT_9B] = Object9B,
+    [TREE_HIDING_PORTAL] = TreeHidingPortal,
+    [LIGHTABLE_SWITCH] = LightableSwitch,
+    [OBJECT_9E] = Object9E,
+    [FAN] = Fan,
+    [OBJECT_A0] = ObjectA0,
+    [PALACE_ARCHWAY] = PalaceArchway,
+    [OBJECT_A2] = ObjectA2,
+    [CLOUD] = Cloud,
+    [MINISH_LIGHT] = MinishLight,
+    [OBJECT_A5] = ObjectA5,
+    [OBJECT_A6] = ObjectA6,
+    [OBJECT_A7] = ObjectA7,
+    [OBJECT_A8] = ObjectA8,
+    [OBJECT_A9] = ObjectA9,
+    [WATERFALL_OPENING] = WaterfallOpening,
+    [OBJECT_AB] = ObjectAB,
+    [FOUR_ELEMENTS] = FourElements,
+    [OBJECT_AD] = ObjectAD,
+    [FLOATING_BLOCK] = FloatingBlock,
+    [OBJECT_AF] = ObjectAF,
+    [METAL_DOOR] = MetalDoor,
+    [JAIL_BARS] = JailBars,
+    [OBJECT_B2] = ObjectB2,
+    [OBJECT_B3] = ObjectB3,
+    [OBJECT_B4] = ObjectB4,
+    [OBJECT_B5] = ObjectB5,
+    [OBJECT_B6] = ObjectB6,
+    [WELL] = Well,
+    [WIND_TRIBE_TELEPORTER] = WindTribeTeleporter,
+    [OBJECT_B9] = ObjectB9,
+    [OBJECT_BA] = ObjectBA,
+    [WINDCREST] = Windcrest,
+    [LIT_AREA] = LitArea,
+    [OBJECT_BD] = ObjectBD,
+    [PINWHEEL] = Pinwheel,
+    [OBJECT_BF] = ObjectBF,
+    [ENEMY_ITEM] = EnemyItem,
+    [OBJECT_C1] = ObjectC1,
 };
diff --git a/src/object/archway.c b/src/object/archway.c
index b00192db..39975ee7 100644
--- a/src/object/archway.c
+++ b/src/object/archway.c
@@ -15,7 +15,7 @@ void Archway(Entity* this) {
         v1 = v1 - 0x5;
         v1 = v1 & v2;
         this->spriteSettings.raw = v1 | 1;
-        this->frameIndex = this->entityType.parameter;
+        this->frameIndex = this->type2;
         this->collisionLayer = 2;
         UpdateSpriteForCollisionLayer(this);
         v3 = CheckIsDungeon();
diff --git a/src/object/backgroundCloud.c b/src/object/backgroundCloud.c
index 909a88a8..ceebf3d7 100644
--- a/src/object/backgroundCloud.c
+++ b/src/object/backgroundCloud.c
@@ -15,10 +15,10 @@ void sub_0808F658(Entity* this) {
     this->spriteSettings.b.draw = 1;
     this->spriteOrientation.flipY = 3;
     this->spriteRendering.b3 = 3;
-    this->spritePriority.b0 = this->entityType.form;
-    this->frameIndex = this->entityType.form;
+    this->spritePriority.b0 = this->type;
+    this->frameIndex = this->type;
     this->direction = 8;
-    this->nonPlanarMovement = gUnk_08121EB0[(this->entityType).form];
+    this->nonPlanarMovement = gUnk_08121EB0[this->type];
     this->field_0x78.HWORD = gRoomControls.roomOriginX - 0x60;
     this->field_0x7a.HWORD = gRoomControls.roomOriginX + gRoomControls.width + 0x60;
     this->animationState = 0;
@@ -45,8 +45,8 @@ void sub_0808F70C(Entity* this) {
             this->x.HALF.HI = this->field_0x78.HWORD;
         }
 
-        if (this->entityType.form == 2)
-            this->y.HALF.HI = gUnk_08121EB3[this->entityType.parameter * 2 + (Random() & 1)];
+        if (this->type == 2)
+            this->y.HALF.HI = gUnk_08121EB3[this->type2 * 2 + (Random() & 1)];
     }
 
     if (this->previousActionFlag == 1) {
diff --git a/src/object/bakerOven.c b/src/object/bakerOven.c
index 0ddc3132..a64217f1 100644
--- a/src/object/bakerOven.c
+++ b/src/object/bakerOven.c
@@ -19,7 +19,7 @@ void sub_0809CC74(Entity* this) {
     this->action = 1;
     UpdateSpriteForCollisionLayer(this);
 
-    if (this->entityType.form == 0) {
+    if (this->type == 0) {
         this->spritePriority.b0 = 5;
         /* Create steam clouds */
         for (i = 0; i < 3; i++) {
@@ -31,12 +31,12 @@ void sub_0809CC74(Entity* this) {
         }
         sub_0809CDF0(this);
     } else {
-        if (this->entityType.parameter & 1) {
+        if (this->type2 & 1) {
             this->spriteSettings.b.draw = 1;
             this->actionDelay = 20;
         } else {
             this->action = 2;
-            this->actionDelay = (this->entityType.parameter & 2) ? 20 : 18;
+            this->actionDelay = (this->type2 & 2) ? 20 : 18;
         }
         InitializeAnimation(this, 0);
     }
@@ -45,7 +45,7 @@ void sub_0809CC74(Entity* this) {
 void sub_0809CD0C(Entity* this) {
     u8* frames;
 
-    if (this->entityType.form) {
+    if (this->type) {
         GetNextFrame(this);
         frames = &this->frames.all;
         if (*frames & 1) {
diff --git a/src/object/bigVortex.c b/src/object/bigVortex.c
index 67d69520..fb771024 100644
--- a/src/object/bigVortex.c
+++ b/src/object/bigVortex.c
@@ -11,7 +11,7 @@ extern void (*const gUnk_0812367C[])(Entity*);
 extern u16 gUnk_08123690[];
 
 void BigVortex(Entity* this) {
-    if ((this->entityType).form == 0) {
+    if (this->type == 0) {
         gUnk_0812367C[this->action](this);
     } else {
         sub_08098E3C(this);
@@ -67,9 +67,9 @@ void sub_08098DC4(Entity* this) {
         ResolveEntityOnTop(this, &gPlayerEntity);
         gPlayerState.playerAction = 0x1f;
         gPlayerState.field_0x34[4] = 1;
-        gPlayerState.field_0x34[5] = this->entityType.parameter;
+        gPlayerState.field_0x34[5] = this->type2;
         this->action = 4;
-        if (this->entityType.parameter == 1) {
+        if (this->type2 == 1) {
             SetGlobalFlag(0x23);
         }
         sub_08077B20();
@@ -87,9 +87,9 @@ void sub_08098E3C(Entity* this) {
     if (this->action == 0) {
         this->action = 1;
         this->spriteSettings.b.draw = TRUE;
-        InitAnimationForceUpdate(this, this->entityType.form);
+        InitAnimationForceUpdate(this, this->type);
     }
-    temp = &gUnk_08123690[this->entityType.form & 2];
+    temp = &gUnk_08123690[this->type & 2];
     sub_0805EC9C(this, temp[0], temp[1], 0);
     UpdateAnimationSingleFrame(this);
 }
diff --git a/src/object/bird.c b/src/object/bird.c
index c69a24ef..2b6f194b 100644
--- a/src/object/bird.c
+++ b/src/object/bird.c
@@ -11,7 +11,7 @@ extern void (*const gUnk_08123EFC[])(Entity*);
 extern void (*const gUnk_08123F04[])(Entity*);
 
 void Bird(Entity* this) {
-    gUnk_08123EC0[this->entityType.form](this);
+    gUnk_08123EC0[this->type](this);
 }
 
 void sub_0809CF3C(Entity* this) {
@@ -90,7 +90,7 @@ void sub_0809D0AC(Entity* this) {
     Entity* fx;
 
     if (sub_080044EC(this, 0x1800) < 2) {
-        (this->entityType).form = 2;
+        this->type = 2;
         this->action = 1;
         this->height.WORD = 0;
         this->collisionLayer = 1;
diff --git a/src/object/button.c b/src/object/button.c
index e81d6bbe..23a2ee8d 100644
--- a/src/object/button.c
+++ b/src/object/button.c
@@ -22,7 +22,7 @@ void sub_08081AE0(Entity* this) {
     this->field_0x74.HWORD = (((this->x.HALF.HI - gRoomControls.roomOriginX) >> 4) & 0x3F) |
                              ((((this->y.HALF.HI - gRoomControls.roomOriginY) >> 4) & 0x3F) << 6);
     this->field_0x70.HALF.HI = GetTileType(this->field_0x74.HWORD, this->collisionLayer);
-    if (this->entityType.form == 0 && CheckFlags(this->field_0x86.HWORD)) {
+    if (this->type == 0 && CheckFlags(this->field_0x86.HWORD)) {
         this->action = 5;
         SetTileType(0x7A, this->field_0x74.HWORD, this->collisionLayer);
     } else {
@@ -51,7 +51,7 @@ void sub_08081BAC(Entity* this) {
         this->actionDelay = 0xA;
         sub_0805E4E0(this, 0xA);
         sub_08081FF8(this);
-        if (this->entityType.form == 1) {
+        if (this->type == 1) {
             this->action = 3;
         } else {
             this->action = 5;
@@ -211,7 +211,7 @@ void sub_08081E6C(Entity* this) {
     if (tile < 0x4000)
         return;
     r1 = GetLayerByIndex(r5);
-    r4 = (this->entityType.form == 0 ? 0x7a : 0x78);
+    r4 = (this->type == 0 ? 0x7a : 0x78);
     tmp = r1 + 0x3802;
     r1 += 0x3002 + r4;
     tmp = tmp + (*r1 << 2);
diff --git a/src/object/chestSpawner.c b/src/object/chestSpawner.c
index 06782b2e..790d1251 100644
--- a/src/object/chestSpawner.c
+++ b/src/object/chestSpawner.c
@@ -12,7 +12,7 @@ extern void (*const gUnk_0811F818[])(Entity*);
 
 extern u32 gUnk_0811F8B0;
 void ChestSpawner(Entity* this) {
-    gUnk_0811F7E8[this->entityType.form](this);
+    gUnk_0811F7E8[this->type](this);
 }
 
 void sub_08083DF0(Entity* this) {
diff --git a/src/object/cloud.c b/src/object/cloud.c
index 0bd0fa5e..a2637b6b 100644
--- a/src/object/cloud.c
+++ b/src/object/cloud.c
@@ -31,11 +31,11 @@ extern u16 gUnk_081247C8[];
 extern u32 gUnk_081247D0;
 
 void Cloud(Entity* this) {
-    gUnk_08124798[(this->entityType).form](this);
+    gUnk_08124798[this->type](this);
 }
 
 void sub_0809F4DC(Entity* this) {
-    if ((this->entityType).parameter == 0) {
+    if (this->type2 == 0) {
         gUnk_081247A0[this->action](this);
     } else {
         gUnk_081247AC[this->action](this);
@@ -100,7 +100,7 @@ void sub_0809F61C(Entity* this) {
 
     if ((gRoomControls.unk6 & 4) == 0) {
         if (this->actionDelay == 30) {
-            SetLocalFlag(this->entityType.parameter);
+            SetLocalFlag(this->type2);
         }
         if (--this->actionDelay == 0) {
             this->action = 3;
diff --git a/src/object/fan.c b/src/object/fan.c
index 5d8874bf..5d800011 100644
--- a/src/object/fan.c
+++ b/src/object/fan.c
@@ -16,10 +16,10 @@ void Fan(Entity* this) {
 }
 
 void sub_0809ED30(Entity* this) {
-    this->direction = (this->entityType.form ^ 2) << 3;
+    this->direction = (this->type ^ 2) << 3;
     sub_0809EE34(this);
     sub_0809EFB0(this);
-    InitializeAnimation(this, this->entityType.form);
+    InitializeAnimation(this, this->type);
 }
 
 void sub_0809ED54(Entity* this) {
@@ -27,7 +27,7 @@ void sub_0809ED54(Entity* this) {
     u32 iVar2;
 
     if (((this->cutsceneBeh.HWORD == 0) || CheckFlags(this->cutsceneBeh.HWORD)) &&
-        ((this->entityType.parameter != 1 || (--this->field_0x74.HWORD == 0)))) {
+        ((this->type2 != 1 || (--this->field_0x74.HWORD == 0)))) {
         sub_0809EE08(this);
     }
 }
@@ -44,7 +44,7 @@ void sub_0809ED88(Entity* this) {
             return;
         }
         sub_0809EE24(this);
-    } else if (((this->entityType).parameter == 1) && (--this->field_0x74.HWORD == 0)) {
+    } else if ((this->type2 == 1) && (--this->field_0x74.HWORD == 0)) {
         sub_0809EE24(this);
     }
 }
@@ -60,12 +60,12 @@ void sub_0809EDE4(Entity* this) {
 void sub_0809EE08(Entity* this) {
     this->action = 2;
     this->field_0x74.HWORD = *((u8*)&this->field_0x7c + 3) << 2;
-    InitializeAnimation(this, this->entityType.form);
+    InitializeAnimation(this, this->type);
 }
 
 void sub_0809EE24(Entity* this) {
     this->action = 3;
-    InitializeAnimation(this, this->entityType.form + 4);
+    InitializeAnimation(this, this->type + 4);
 }
 
 void sub_0809EE34(Entity* this) {
diff --git a/src/object/fileScreenObjects.c b/src/object/fileScreenObjects.c
index 7bc3f717..51403761 100644
--- a/src/object/fileScreenObjects.c
+++ b/src/object/fileScreenObjects.c
@@ -51,7 +51,7 @@ void FileScreenObjects(Entity* this) {
     if (this->currentHealth == 0) {
         sub_0808EFF0(this);
     }
-    gUnk_08121C64[this->entityType.form](this);
+    gUnk_08121C64[this->type](this);
     if (this->animIndex < 64) {
         UpdateAnimationSingleFrame(this);
     }
@@ -65,7 +65,7 @@ void sub_0808E7F0(Entity* this) {
     sub_080AE008(this, 1, 2);
     this->palette.b.b0 = 0xF;
     this->spriteSettings.b.draw = 0;
-    this->entityType.parameter = 0xFF;
+    this->type2 = 0xFF;
     this->action = 1;
 }
 
@@ -75,15 +75,15 @@ void sub_0808E818(Entity* this) {
 
     if (!sub_0808E950()) {
         int var2 = -1;
-        this->entityType.parameter = var2;
+        this->type2 = var2;
         this->field_0x68.HWORD = var2;
         this->field_0x6a.HWORD = var2;
         this->spriteSettings.b.draw = 0;
         return;
     }
 
-    if (this->entityType.parameter != gUnk_02019EE0.unk6) {
-        this->entityType.parameter = gUnk_02019EE0.unk6;
+    if (this->type2 != gUnk_02019EE0.unk6) {
+        this->type2 = gUnk_02019EE0.unk6;
         this->field_0x68.HWORD = CheckGlobalFlag(EZERO_1ST) == 0 ? 0x400 : 0x100;
         this->field_0x70.BYTES.byte0 = 4;
         this->animationState = 2;
@@ -142,7 +142,7 @@ void sub_0808E988(Entity* this) {
     if (this->action == 0) {
         this->action = 1;
         this->spriteIndex = 0x142;
-        this->entityType.parameter = 0xFF;
+        this->type2 = 0xFF;
         sub_080AE008(this, 1, 3);
     }
 
@@ -155,7 +155,7 @@ void sub_0808E988(Entity* this) {
         }
 
         if (i != 0) {
-            if (this->entityType.parameter != i) {
+            if (this->type2 != i) {
                 InitAnimationForceUpdate(this, i);
             }
             this->spriteSettings.b.draw = 2;
@@ -178,7 +178,7 @@ void sub_0808EA28(Entity* this) {
     u32 var0;
     u32 var1;
 
-    if (this->entityType.form == 3) {
+    if (this->type == 3) {
         if (gUnk_02000000->gameLanguage > LANGUAGE_EN) {
             this->spriteSettings.b.draw = 2;
         } else {
@@ -186,11 +186,11 @@ void sub_0808EA28(Entity* this) {
         }
     }
 
-    if (this->entityType.form == gUnk_02019EE0.unk6) {
+    if (this->type == gUnk_02019EE0.unk6) {
         var0 = 12;
         var1 = 1;
     } else {
-        if (gUnk_02032EC0.lastState == 5 && this->entityType.form == gUnk_02019EE0.unk7) {
+        if (gUnk_02032EC0.lastState == 5 && this->type == gUnk_02019EE0.unk7) {
             var0 = 13;
             var1 = 2;
         } else {
@@ -207,8 +207,8 @@ void sub_0808EA28(Entity* this) {
 
 void sub_0808EABC(Entity* this) {
     int var0 = -72;
-    int var1 = this->entityType.form * 32 + 40;
-    int var2 = gUnk_02019EE0.unk6 == this->entityType.form;
+    int var1 = this->type * 32 + 40;
+    int var2 = gUnk_02019EE0.unk6 == this->type;
     switch (gUnk_02032EC0.lastState) {
         case 0:
             var0 = 24;
@@ -223,7 +223,7 @@ void sub_0808EABC(Entity* this) {
             }
             break;
         case 5:
-            switch (gMenu.focusCoords[this->entityType.form]) {
+            switch (gMenu.focusCoords[this->type]) {
                 case 0:
                     var0 = 42;
                     var1 = 40;
@@ -232,7 +232,7 @@ void sub_0808EABC(Entity* this) {
                 case 2:
                     var0 = 20;
                     var1 = 144;
-                    var1 -= (gMenu.unk16 - gMenu.focusCoords[this->entityType.form]) * 32;
+                    var1 -= (gMenu.unk16 - gMenu.focusCoords[this->type]) * 32;
                     break;
             }
             break;
@@ -326,8 +326,7 @@ static Entity* sub_0808EC80(int form) {
     Entity* entityA = (Entity*)&gUnk_03003DA0;
     Entity* entityB = entityA->next;
     while (entityB != entityA) {
-        if ((entityB->entityType.type == 0x6 && entityB->entityType.subtype == 0x48) &&
-            form == entityB->entityType.form) {
+        if ((entityB->kind == 0x6 && entityB->id == 0x48) && form == entityB->type) {
             return entityB;
         }
         entityB = entityB->next;
@@ -361,7 +360,7 @@ void sub_0808ECBC(Entity* this) {
             break;
     }
 
-    var2 = this->entityType.form - 4;
+    var2 = this->type - 4;
     var3 = &gUnk_08121CD4[var1][var2];
     this->field_0x68.HWORD = var3->unk1;
     this->field_0x6a.HWORD = var3->unk2;
@@ -408,7 +407,7 @@ void sub_0808EE00(Entity* this) {
     int var0, var1, var2;
 
     var0 = ((struct_02000000*)0x2000000)->gameLanguage != 0;
-    var1 = this->entityType.form - 10;
+    var1 = this->type - 10;
     this->frameIndex = gUnk_08121D38[var0][var1];
     this->x.HALF.HI = gUnk_08121D18[var0][var1];
     this->field_0x68.HWORD = gUnk_08121D18[var0][var1];
@@ -445,7 +444,7 @@ void sub_0808EED8(Entity* this) {
         this->spriteSettings.b.draw = 0;
     } else {
         this->spriteSettings.b.draw = 2;
-        var0 = this->entityType.form - 19;
+        var0 = this->type - 19;
         this->palette.b.b0 = gMenu.column_idx == var0 ? 4 : 3;
     }
 }
@@ -456,7 +455,7 @@ void sub_0808EF24(Entity* this) {
         this->spriteSettings.b.draw = 0;
     } else {
         this->spriteSettings.b.draw = 2;
-        if (this->entityType.form == 21) {
+        if (this->type == 21) {
             var0 = ((struct_02000000*)0x2000000)->messageSpeed;
         } else {
             var0 = ((struct_02000000*)0x2000000)->brightnessPref;
@@ -522,7 +521,7 @@ static void sub_0808EFF0(Entity* this) {
     this->currentHealth = 1;
     this->frameIndex = 0xFF;
     this->animIndex = 0xFF;
-    var0 = &gUnk_08121D54[this->entityType.form];
+    var0 = &gUnk_08121D54[this->type];
     this->x.HALF.HI = var0->unk2;
     this->field_0x68.HWORD = var0->unk2;
     this->y.HALF.HI = var0->unk4;
diff --git a/src/object/floatingBlock.c b/src/object/floatingBlock.c
index e9bb10e8..661cec72 100644
--- a/src/object/floatingBlock.c
+++ b/src/object/floatingBlock.c
@@ -5,7 +5,7 @@
 void FloatingBlock(Entity* this) {
     if (this->action == 0) {
         this->action = 1;
-        this->frameIndex = this->entityType.form;
+        this->frameIndex = this->type;
         this->spritePriority.b0 = 0xe;
         this->collisionLayer = 1;
         UpdateSpriteForCollisionLayer(this);
diff --git a/src/object/giantLeaf.c b/src/object/giantLeaf.c
index 9003f28b..cf2fb1df 100644
--- a/src/object/giantLeaf.c
+++ b/src/object/giantLeaf.c
@@ -15,7 +15,7 @@ void GiantLeaf(Entity* ent) {
         ent->spriteSettings.b.draw = 1;
         ent->spriteRendering.b3 = 3;
         ent->spritePriority.b0 = 7;
-        ent->frameIndex = ent->entityType.form;
+        ent->frameIndex = ent->type;
         sub_0808D618(ent);
     }
 }
@@ -25,7 +25,7 @@ void sub_0808D618(Entity* ent) {
     s16* arr;
     u32 i;
 
-    arr = (ent->entityType.form != 0) ? gUnk_0812176A : gUnk_08121750;
+    arr = (ent->type != 0) ? gUnk_0812176A : gUnk_08121750;
     tilePos = (((ent->x.HALF.HI - gRoomControls.roomOriginX) >> 4) & 0x3F) |
               ((((ent->y.HALF.HI - gRoomControls.roomOriginY) >> 4) & 0x3F) * 64);
 
diff --git a/src/object/greatFairy.c b/src/object/greatFairy.c
index 9ed9fd67..e71ddfc6 100644
--- a/src/object/greatFairy.c
+++ b/src/object/greatFairy.c
@@ -25,10 +25,10 @@ void GreatFairy(Entity* this) {
     u8 bVar1;
 
     if (this->action == 0) {
-        bVar1 = __modsi3(this->entityType.form, 11);
-        this->entityType.parameter = bVar1;
+        bVar1 = __modsi3(this->type, 11);
+        this->type2 = bVar1;
     }
-    GreatFairy_Main[(this->entityType).parameter](this);
+    GreatFairy_Main[this->type2](this);
 }
 
 // Behaviors
@@ -366,7 +366,7 @@ void GreatFairy_EnergyUpdate(Entity* this) {
 }
 
 void sub_08087114(Entity* this) {
-    if ((this->entityType).parameter == 0) {
+    if (this->type2 == 0) {
         GreatFairy_Form1Behaviors[this->action](this);
     } else {
         GreatFairy_Form2Behaviors[this->action](this);
@@ -485,10 +485,10 @@ void GreatFairy_InitializeAnimation(Entity* this) {
     s32 temp;
 
     this->action = 1;
-    temp = this->entityType.form;
-    this->entityType.parameter = temp % 11;
+    temp = this->type;
+    this->type2 = temp % 11;
     this->collisionLayer = 2;
-    InitializeAnimation(this, this->entityType.parameter);
+    InitializeAnimation(this, this->type2);
     sub_0805E3A0(this, 2);
 }
 
@@ -496,7 +496,7 @@ Entity* GreatFairy_CreateForm(Entity* this, u32 curForm, u32 parameter) {
     s32 nextForm;
     Entity* ent;
 
-    nextForm = this->entityType.form;
+    nextForm = this->type;
     nextForm /= 11;
 
     ent = CreateObject(0x1b, (u8)nextForm * 11 + curForm, parameter);
diff --git a/src/object/heartContainer.c b/src/object/heartContainer.c
index 8181dacc..f6858b50 100644
--- a/src/object/heartContainer.c
+++ b/src/object/heartContainer.c
@@ -29,7 +29,7 @@ static void sub_0808E6A0(Entity* this) {
         DeleteThisEntity();
     }
     this->action = 1;
-    this->entityType.form = 0x62;
+    this->type = 0x62;
     this->spriteSettings.b.draw = 0;
     this->hitbox = &gUnk_08121C58;
     this->collisionLayer = 3;
diff --git a/src/object/houseDoorExterior.c b/src/object/houseDoorExterior.c
index f323363f..d500686c 100644
--- a/src/object/houseDoorExterior.c
+++ b/src/object/houseDoorExterior.c
@@ -32,7 +32,7 @@ extern void (*const gUnk_081206B4[])(Entity*);
 extern Hitbox gUnk_081206AC; // TODO: should be const
 
 void HouseDoorExterior(Entity* this) {
-    gUnk_081206B4[this->entityType.parameter](this);
+    gUnk_081206B4[this->type2](this);
 }
 
 void sub_080866D8(Entity* this) {
@@ -156,7 +156,7 @@ static void sub_080868EC(Entity* entity, unk_80868EC* arg1) {
 
 void sub_0808692C(Entity* this) {
     this->flags &= 0xFD;
-    this->entityType.parameter = 2;
+    this->type2 = 2;
     this->action = this->frameIndex == 0 ? 1 : 2;
     this->previousActionFlag = 0;
     this->actionDelay = 8;
diff --git a/src/object/itemOnGround.c b/src/object/itemOnGround.c
index 114e42e7..409c1d04 100644
--- a/src/object/itemOnGround.c
+++ b/src/object/itemOnGround.c
@@ -75,7 +75,7 @@ void ItemOnGround(Entity* this) {
         gUnk_0811E7D4[this->action](this);
     }
 
-    if (this->entityType.form == 0x5C) {
+    if (this->type == 0x5C) {
         gRoomVars.field_0x4++;
     }
 
@@ -87,7 +87,7 @@ void sub_08080F20(Entity* this) {
         DeleteThisEntity();
     }
 
-    if (this->entityType.form != 0x60) {
+    if (this->type != 0x60) {
         this->spriteSettings.b.draw = 1;
         this->spritePriority.b1 = 3;
         this->spriteSettings.b.shadow = 0;
@@ -96,7 +96,7 @@ void sub_08080F20(Entity* this) {
         this->field_0x40 = 0x44;
         this->currentHealth = 0xFF;
         this->hitbox = &gUnk_080FD1A8;
-        switch (this->entityType.form - 0x3F) {
+        switch (this->type - 0x3F) {
             case 0:
             case 21:
             case 22:
@@ -120,14 +120,14 @@ void sub_08080F20(Entity* this) {
         this->field_0x68.HALF.LO = 0;
         this->actionDelay = 0;
         sub_0805E3A0(this, 3);
-        this->field_0x1c = sub_0808147C(this->entityType.form);
+        this->field_0x1c = sub_0808147C(this->type);
         gUnk_0811E7E8[this->field_0x68.HALF.HI](this);
     } else {
         Entity* entity = CreateObject(0x40, 0x60, 0);
         if (entity) {
             entity->actionDelay = 0;
             if (this->actionDelay == 1) {
-                entity->entityType.parameter = 2;
+                entity->type2 = 2;
             }
 
             CopyPosition(this, entity);
@@ -158,7 +158,7 @@ static void sub_080810A8(Entity* this) {
 }
 
 static void sub_080810FC(Entity* this) {
-    if (this->entityType.form != 0x5F) {
+    if (this->type != 0x5F) {
         sub_08081598(this);
     } else {
         this->action = 2;
@@ -278,7 +278,7 @@ void nullsub_510(Entity* this) {
 
 void sub_08081328(Entity* this) {
     Entity* other = this->attachedEntity;
-    if (!(other->entityType.type == 8 && other->entityType.subtype == 3)) {
+    if (!(other->kind == 8 && other->id == 3)) {
         sub_08081404(this, 0);
     } else {
         CopyPosition(other, this);
@@ -334,17 +334,17 @@ void sub_08081404(Entity* this, u32 arg1) {
 bool32 sub_08081420(Entity* this) {
     if (CheckShouldPlayItemGetCutscene(this)) {
         sub_0805E3A0(this, 6);
-        CreateItemEntity(this->entityType.form, this->entityType.parameter, 0);
+        CreateItemEntity(this->type, this->type2, 0);
         return TRUE;
     } else {
-        GiveItem(this->entityType.form, this->entityType.parameter);
+        GiveItem(this->type, this->type2);
         return FALSE;
     }
 }
 
 static bool32 CheckShouldPlayItemGetCutscene(Entity* this) {
     bool32 result = FALSE;
-    if ((gUnk_080FD5B4[this->entityType.form].unk0[3] & 0x2) || !GetInventoryValue(this->entityType.form)) {
+    if ((gUnk_080FD5B4[this->type].unk0[3] & 0x2) || !GetInventoryValue(this->type)) {
         result = TRUE;
     }
     return result;
@@ -391,7 +391,7 @@ static void sub_08081500(Entity* this) {
             this->field_0x68.HALF.LO = 1;
         } else {
             if (var0 == 1) {
-                sub_0808148C(this->entityType.form);
+                sub_0808148C(this->type);
                 UpdateSpriteForCollisionLayer(this);
             }
 
@@ -408,13 +408,13 @@ static void sub_0808153C(Entity* this) {
         if (!sub_08003FC4(this, 0x1000) && !sub_0800442E(this)) {
             this->field_0x68.HALF.LO = 1;
             this->field_0x20 = 0x1E000;
-            sub_0808148C(this->entityType.form);
+            sub_0808148C(this->type);
             UpdateSpriteForCollisionLayer(this);
         }
     } else {
         if (!sub_08003FC4(this, 0x2800)) {
             this->field_0x68.HALF.LO = 2;
-            sub_0808148C(this->entityType.form);
+            sub_0808148C(this->type);
         }
     }
 }
@@ -434,7 +434,7 @@ static void sub_08081598(Entity* this) {
     this->attachedEntity = &gPlayerEntity;
     CopyPosition(this->attachedEntity, this);
     this->height.HALF.HI -= 4;
-    if (this->entityType.form != 0x5F && sub_08081420(this)) {
+    if (this->type != 0x5F && sub_08081420(this)) {
         sub_08081404(this, 1);
     }
 }
diff --git a/src/object/lightableSwitch.c b/src/object/lightableSwitch.c
index ffe2d28e..cfbf0ba5 100644
--- a/src/object/lightableSwitch.c
+++ b/src/object/lightableSwitch.c
@@ -19,7 +19,7 @@ extern void (*const gUnk_081243C4[])(Entity*);
 extern Hitbox gUnk_080FD150;
 
 void LightableSwitch(Entity* this) {
-    gUnk_081243B4[this->entityType.form](this);
+    gUnk_081243B4[this->type](this);
     sub_0809EB30(this);
 }
 
@@ -69,9 +69,9 @@ void sub_0809EAD8(Entity* this) {
     u8 bVar1;
     Entity* pEVar2;
 
-    if (this->entityType.parameter != 0) {
+    if (this->type2 != 0) {
 
-        this->attachedEntity = GetCurrentRoomProperty(this->entityType.parameter);
+        this->attachedEntity = GetCurrentRoomProperty(this->type2);
         sub_080A2CC0(this, &this->attachedEntity, &this->field_0x74.HWORD);
 
     } else {
@@ -83,7 +83,7 @@ void sub_0809EB30(Entity* this) {
     u16 uVar1;
     u16* puVar2;
 
-    if (this->entityType.parameter != 0) {
+    if (this->type2 != 0) {
         if ((this->direction & 0x80) == 0) {
             sub_0806F69C(this);
         }
diff --git a/src/object/lilypadSmall.c b/src/object/lilypadSmall.c
index 7dc35ae2..a96c49ad 100644
--- a/src/object/lilypadSmall.c
+++ b/src/object/lilypadSmall.c
@@ -19,7 +19,7 @@ void LilypadSmall(Entity* this) {
         this->frameIndex = (rand >> 0x10) & 3;
         this->spriteSettings.b.draw = TRUE;
         this->spritePriority.b0 = 7;
-        this->attachedEntity = GetCurrentRoomProperty(this->entityType.parameter);
+        this->attachedEntity = GetCurrentRoomProperty(this->type2);
         sub_080A2CC0(this, &this->attachedEntity, &this->field_0x70.HALF.LO);
     }
     sub_080A2BE4(this, sub_08097ADC(this));
diff --git a/src/object/mask.c b/src/object/mask.c
index 03dceea7..e405df5f 100644
--- a/src/object/mask.c
+++ b/src/object/mask.c
@@ -29,11 +29,11 @@ void Mask(Entity* this) {
 }
 
 void sub_080929A4(Entity* this) {
-    if (this->entityType.parameter & 0xC0) {
+    if (this->type2 & 0xC0) {
         if (CheckFlags(this->field_0x86.HWORD)) {
             s32 field_0x0a;
 
-            switch (this->entityType.parameter & 0xC0) {
+            switch (this->type2 & 0xC0) {
                 case 0x40:
                     field_0x0a = gScreenTransition[0x5];
 
@@ -62,7 +62,7 @@ void sub_080929A4(Entity* this) {
     this->field_0xf = this->actionDelay >> 1;
     this->actionDelay = 0;
 
-    this->frameIndex = this->entityType.parameter & 0x3f;
+    this->frameIndex = this->type2 & 0x3f;
 
     this->field_0x7c.HALF.HI = COORD_TO_TILE(this);
     this->field_0x7c.HALF.LO = sub_080001DA(this->field_0x7c.HALF.HI, 1);
@@ -112,7 +112,7 @@ void sub_08092B0C(Entity* this) {
         this->action = 3;
 
         this->actionDelay = 0;
-        switch (this->entityType.parameter & 0xC0) {
+        switch (this->type2 & 0xC0) {
             case 0x80:
                 EnqueueSFX(0x72);
             case 0x40:
diff --git a/src/object/minecart.c b/src/object/minecart.c
index ca233985..53d1ff82 100644
--- a/src/object/minecart.c
+++ b/src/object/minecart.c
@@ -42,7 +42,7 @@ void sub_080916EC(Entity* this) {
     this->x.HALF.HI = gRoomControls.roomOriginX + ((unk->field_0x0 & 0x3f) << 4) + 8;
     this->y.HALF.HI = gRoomControls.roomOriginY + ((unk->field_0x0 & 0xfc << 4) >> 2) + 8;
     this->animationState = unk->field_0x5;
-    this->entityType.parameter = unk->field_0x6;
+    this->type2 = unk->field_0x6;
     this->action = 1;
     this->hitbox = &gUnk_080FD310;
     this->flags |= 0x80;
@@ -53,7 +53,7 @@ void sub_080916EC(Entity* this) {
     this->direction = DirectionFromAnimationState(this->animationState);
     this->nonPlanarMovement = 0x700;
     this->spritePriority.b1 = 3;
-    InitAnimationForceUpdate(this, this->entityType.parameter + 4 + this->animationState);
+    InitAnimationForceUpdate(this, this->type2 + 4 + this->animationState);
     SetTile(0x4022, COORD_TO_TILE(this), this->collisionLayer);
 }
 
@@ -62,7 +62,7 @@ void sub_080917DC(Entity* this) {
     if ((this->bitfield & 0x7f) == 0x1d) {
         this->field_0x20 = 0x2a000;
         this->action = 7;
-        InitAnimationForceUpdate(this, this->entityType.parameter + 4 + this->animationState);
+        InitAnimationForceUpdate(this, this->type2 + 4 + this->animationState);
         SoundReq(0x13b);
     } else {
         if (sub_0800445C(this) != 0) {
@@ -75,7 +75,7 @@ void sub_080917DC(Entity* this) {
         } else {
             this->actionDelay = 0;
         }
-        if ((this->entityType).parameter == 0) {
+        if (this->type2 == 0) {
             if (8 < this->actionDelay) {
                 this->action = this->action + 1;
                 gPlayerState.jumpStatus = 0x81;
diff --git a/src/object/mineralWaterSource.c b/src/object/mineralWaterSource.c
index 644da9c1..50212f44 100644
--- a/src/object/mineralWaterSource.c
+++ b/src/object/mineralWaterSource.c
@@ -25,9 +25,9 @@ void MineralWaterSource_Init(Entity* this) {
         return;
     }
 
-    unknownParameters = &MineralWaterSourceParameters[this->entityType.form];
+    unknownParameters = &MineralWaterSourceParameters[this->type];
 
-    this->entityType.parameter = unknownParameters->field_0x00;
+    this->type2 = unknownParameters->field_0x00;
     this->field_0x40 = unknownParameters->field_0x03;
 
     this->hitbox->width = unknownParameters->field_0x01;
diff --git a/src/object/minishLight.c b/src/object/minishLight.c
index 21465597..458a0864 100644
--- a/src/object/minishLight.c
+++ b/src/object/minishLight.c
@@ -13,7 +13,7 @@ void sub_0809F840(Entity* this) {
     this->actionDelay = 0x20;
     this->field_0xf = 0;
 
-    if (this->entityType.parameter != 0) {
+    if (this->type2 != 0) {
         this->spriteSettings.b.flipX = 1;
     }
 
diff --git a/src/object/minishSizedEntrance.c b/src/object/minishSizedEntrance.c
index 59a9294b..78410c6c 100644
--- a/src/object/minishSizedEntrance.c
+++ b/src/object/minishSizedEntrance.c
@@ -15,7 +15,7 @@ void sub_08090EC0(Entity* this) {
     this->action = 1;
     this->spriteRendering.b3 = 3;
     this->spritePriority.b0 = 7;
-    this->frameIndex = (this->entityType).parameter;
+    this->frameIndex = this->type2;
     if (CheckIsDungeon()) {
         this->frameIndex += 4;
         sub_080AE068(this);
diff --git a/src/object/object1A.c b/src/object/object1A.c
index 4670f231..26ece918 100644
--- a/src/object/object1A.c
+++ b/src/object/object1A.c
@@ -20,7 +20,7 @@ void sub_080869DC(Entity* ent) {
     ent->spriteSettings.b.draw = 0;
     ent->hitbox = &gUnk_080FD1A8;
     ent->field_0x3c |= 16;
-    itemEntity = CreateObject(0, ent->entityType.form, 0);
+    itemEntity = CreateObject(0, ent->type, 0);
     if (itemEntity != NULL) {
         itemEntity->actionDelay = 10;
         itemEntity->parent = ent;
diff --git a/src/object/object1C.c b/src/object/object1C.c
index ace54e82..c12a6c1d 100644
--- a/src/object/object1C.c
+++ b/src/object/object1C.c
@@ -12,7 +12,7 @@ void Object1C(Entity* this) {
     }
     iVar1 = CheckRectOnScreen(this->field_0x80.HWORD, this->field_0x82.HWORD, 0x10, 0x10);
     if (iVar1 == 0) {
-        this->parent->field_0x20 &= ~(1 << this->entityType.parameter);
+        this->parent->field_0x20 &= ~(1 << this->type2);
         DeleteThisEntity();
     }
 }
diff --git a/src/object/object2A.c b/src/object/object2A.c
index 9844ec72..ffd00460 100644
--- a/src/object/object2A.c
+++ b/src/object/object2A.c
@@ -12,11 +12,11 @@ void Object2A(Entity* this) {
 void sub_08089B18(Entity* this) {
     this->action = 1;
     this->spriteSettings.b.draw = TRUE;
-    if (this->entityType.parameter != 0) {
-        this->actionDelay = this->entityType.parameter;
+    if (this->type2 != 0) {
+        this->actionDelay = this->type2;
     }
     InitializeAnimation(this, 0);
-    switch (this->entityType.form) {
+    switch (this->type) {
         case 1:
             this->y.HALF.HI -= 8;
             this->actionDelay = 0x28;
diff --git a/src/object/object49.c b/src/object/object49.c
index e871d959..16bf7bb9 100644
--- a/src/object/object49.c
+++ b/src/object/object49.c
@@ -19,7 +19,7 @@ extern void (*const gUnk_08121E98[])(Entity*);
 extern const u16 gUnk_08121EA0[];
 
 void Object49(Entity* this) {
-    gUnk_08121E5C[this->entityType.form](this);
+    gUnk_08121E5C[this->type](this);
 }
 
 void sub_0808F0B8(Entity* this) {
@@ -179,10 +179,10 @@ void sub_0808F3DC(Entity* this) {
         this->spriteSettings.b.draw = 1;
         this->action = 1;
         this->actionDelay = 120;
-        InitializeAnimation(this, this->entityType.form + 1);
+        InitializeAnimation(this, this->type + 1);
         // TODO: This block of code might supposed to be a switch statement.
-        if (this->entityType.form != 8) {
-            if (this->entityType.form == 7) {
+        if (this->type != 8) {
+            if (this->type == 7) {
                 sub_0806FAD8(this->attachedEntity, this);
                 return;
             }
@@ -193,13 +193,13 @@ void sub_0808F3DC(Entity* this) {
         ResolveEntityOnTop(this->attachedEntity, this);
     } else {
         if (*(u32*)&this->parent->field_0x74 == 0) {
-            if (this->entityType.form == 8) {
+            if (this->type == 8) {
                 this->attachedEntity->damageType = this->damageType;
             }
             DeleteThisEntity();
         }
 
-        if (this->entityType.form == 5 && this->frames.b.f0) {
+        if (this->type == 5 && this->frames.b.f0) {
             Entity* entity = CreateObjectWithParent(this->attachedEntity, 0x49, 8, 0);
             if (entity) {
                 entity->parent = this->parent;
@@ -233,7 +233,7 @@ void sub_0808F498(Entity* this) {
     } else {
         this->action = 1;
         this->actionDelay = 64;
-        var0 = this->entityType.parameter != 0 ? 44 : 43;
+        var0 = this->type2 != 0 ? 44 : 43;
         this->x.HALF.HI -= this->parent->hitbox->width;
         this->x.HALF.HI += (s32)Random() % (this->parent->hitbox->width * 2);
         this->y.HALF.HI -= this->parent->hitbox->height;
diff --git a/src/object/object7E.c b/src/object/object7E.c
index a8120b22..6c89947e 100644
--- a/src/object/object7E.c
+++ b/src/object/object7E.c
@@ -11,15 +11,15 @@ void Object7E(Entity* this) {
         this->action = 1;
         this->spritePriority.b0 = 7;
         this->frameIndex = 0x28;
-        if (this->entityType.form == 0) {
+        if (this->type == 0) {
             this->spriteSettings.b.draw = TRUE;
-        } else if (this->entityType.form == 2) {
+        } else if (this->type == 2) {
             this->spriteSettings.b.flipX = TRUE;
         }
     }
     PositionRelative(this->parent, this, 0, 0x80000);
     this->height.HALF.HI = 0;
-    if ((this->entityType).form != 0) {
+    if (this->type != 0) {
         this->spriteSettings.b.draw = this->attachedEntity->spriteSettings.b.draw;
         this->frameIndex = this->attachedEntity->frameIndex + 0x1f;
     }
diff --git a/src/object/object9E.c b/src/object/object9E.c
index 4549a18d..858ee01b 100644
--- a/src/object/object9E.c
+++ b/src/object/object9E.c
@@ -14,7 +14,7 @@ void Object9E(Entity* this) {
     if (this->action == 0) {
         this->action = 1;
         this->spritePriority.b0 = 6;
-        if ((this->entityType).form == 0) {
+        if (this->type == 0) {
             this->flags = this->flags | 0x80;
             this->frameIndex = 1;
             layer = &this->collisionLayer;
diff --git a/src/object/objectA2.c b/src/object/objectA2.c
index bf308a4d..01fd9fa6 100644
--- a/src/object/objectA2.c
+++ b/src/object/objectA2.c
@@ -36,7 +36,7 @@ void sub_0809F318(Entity* this) {
     this->height.HALF.HI = 0xFFB0;
     this->spriteOrientation.flipY = 2;
     this->action = 1;
-    sub_0801D2B4(this, gUnk_08124704[this->entityType.form]);
+    sub_0801D2B4(this, gUnk_08124704[this->type]);
     sub_0805E3A0(this, 7);
 }
 
diff --git a/src/object/objectA8.c b/src/object/objectA8.c
index ce298c29..4cca37f2 100644
--- a/src/object/objectA8.c
+++ b/src/object/objectA8.c
@@ -26,7 +26,7 @@ void ObjectA8(Entity* this) {
             case 0x1f:
                 this->action = 5;
                 this->attachedEntity = &gPlayerEntity;
-                CreateItemEntity((this->entityType).form, 0, 0);
+                CreateItemEntity(this->type, 0, 0);
                 DeleteThisEntity();
         }
     }
diff --git a/src/object/objectAF.c b/src/object/objectAF.c
index eba574f3..c1d32b60 100644
--- a/src/object/objectAF.c
+++ b/src/object/objectAF.c
@@ -10,7 +10,7 @@ void ObjectAF(Entity* this) {
 }
 
 void sub_080A05A4(Entity* this) {
-    if ((this->entityType).form != 2) {
+    if (this->type != 2) {
         this->action = 1;
         this->spritePriority.b0 = 6;
         sub_080A0640(this);
@@ -45,7 +45,7 @@ void sub_080A0624(Entity* this) {
 }
 
 void sub_080A0640(Entity* this) {
-    if (this->entityType.form == 0) {
+    if (this->type == 0) {
         PositionRelative(*(Entity**)(this->parent->myHeap + 0x4), this, 0, 0x80000);
     } else {
         CopyPosition(this->parent, this);
diff --git a/src/object/objectB2.c b/src/object/objectB2.c
index 7c4073fb..4722d2e9 100644
--- a/src/object/objectB2.c
+++ b/src/object/objectB2.c
@@ -13,14 +13,14 @@ void ObjectB2(Entity* this) {
     if (this->action == 0) {
         this->action = 1;
         this->actionDelay = 0x10;
-        this->direction = (this->entityType).form << 3;
+        this->direction = this->type << 3;
         if (this->collisionLayer == 2) {
             pEVar3 = &gUnk_0200D654;
         } else {
             pEVar3 = &gUnk_02027EB4;
         }
         this->attachedEntity = pEVar3;
-        InitializeAnimation(this, this->entityType.form);
+        InitializeAnimation(this, this->type);
     }
     this->nonPlanarMovement = this->parent->nonPlanarMovement;
     sub_0806F69C(this);
diff --git a/src/object/palaceArchway.c b/src/object/palaceArchway.c
index de1e5297..cec05cbe 100644
--- a/src/object/palaceArchway.c
+++ b/src/object/palaceArchway.c
@@ -11,7 +11,7 @@ void PalaceArchway(Entity* this) {
 
 void sub_0809F2A0(Entity* this) {
     this->action = 1;
-    this->frameIndex = this->entityType.parameter;
+    this->frameIndex = this->type2;
     this->spriteRendering.b3 = 3;
     this->spritePriority.b0 = 7;
     SetTile(0x4069, COORD_TO_TILE(this), this->collisionLayer);
diff --git a/src/object/pinwheel.c b/src/object/pinwheel.c
index 5862c3ca..d6a24471 100644
--- a/src/object/pinwheel.c
+++ b/src/object/pinwheel.c
@@ -21,7 +21,7 @@ void Pinwheel(Entity* this) {
 }
 
 void sub_080A23DC(Entity* this) {
-    this->field_0x68.HWORD = gUnk_08125050[this->entityType.parameter];
+    this->field_0x68.HWORD = gUnk_08125050[this->type2];
     this->spritePriority.b0 = 7;
     if (CheckLocalFlag(this->field_0x68.HWORD) != 0) {
         this->action = 2;
diff --git a/src/object/pot.c b/src/object/pot.c
index a4cddb5e..cd73f9a8 100644
--- a/src/object/pot.c
+++ b/src/object/pot.c
@@ -28,7 +28,7 @@ void Pot(Entity* this) {
 }
 
 void sub_0808222C(Entity* this) {
-    if (this->entityType.parameter == 1 && CheckFlags(this->field_0x86.HWORD)) {
+    if (this->type2 == 1 && CheckFlags(this->field_0x86.HWORD)) {
         DeleteThisEntity();
     }
 
@@ -261,13 +261,13 @@ static void sub_08082824(Entity* this) {
 }
 
 static void sub_08082850(Entity* this, Entity* parent) {
-    u32 parameter = sub_0808288C(this, this->entityType.form, this->field_0x7c.BYTES.byte1, this->entityType.parameter);
+    u32 parameter = sub_0808288C(this, this->type, this->field_0x7c.BYTES.byte1, this->type2);
     Entity* fxEntity = CreateFx(this, 5, parameter);
     if (fxEntity) {
         fxEntity->parent = parent;
     }
 
-    if (this->entityType.parameter == 1) {
+    if (this->type2 == 1) {
         SetFlag(this->field_0x86.HWORD);
     }
 
diff --git a/src/object/railtrack.c b/src/object/railtrack.c
index 57f58f76..2e3a3d66 100644
--- a/src/object/railtrack.c
+++ b/src/object/railtrack.c
@@ -25,13 +25,13 @@ void sub_080851AC(Entity* this) {
     this->action = 1;
     this->spriteSettings.b.draw = 1;
     this->spritePriority.b0 = 7;
-    if ((this->entityType.parameter & 1) != 0) {
+    if ((this->type2 & 1) != 0) {
         this->field_0x7c.HALF.LO = -1;
     } else {
         this->field_0x7c.HALF.LO = 1;
     }
-    this->animationState = this->entityType.parameter & 2;
-    if ((this->entityType).form == 3) {
+    this->animationState = this->type2 & 2;
+    if (this->type == 3) {
         uVar1 = CheckFlags(this->field_0x86.HWORD);
         this->field_0x7a.HWORD = uVar1;
         if ((u16)(uVar1 & -1) != 0) {
@@ -48,7 +48,7 @@ void sub_08085264(Entity* this) {
     if (CheckFlags(this->field_0x86.HWORD)) {
         this->action = 2;
         this->field_0xf = 8;
-        if (this->entityType.form == 1) {
+        if (this->type == 1) {
             ClearFlag(this->field_0x86.HWORD);
         }
         this->animationState = (this->animationState + *(u8*)&this->field_0x7c) & 3;
@@ -72,7 +72,7 @@ void sub_080852B4(Entity* this) {
 
 void sub_08085308(Entity* this) {
     if (sub_080854A8(this) == 0) {
-        switch (this->entityType.form) {
+        switch (this->type) {
             case 0:
             case 1:
                 break;
diff --git a/src/object/smoke.c b/src/object/smoke.c
index c8759c7c..5ec708b9 100644
--- a/src/object/smoke.c
+++ b/src/object/smoke.c
@@ -10,7 +10,7 @@ extern void (*const gUnk_08121070[])(Entity*);
 extern s8 gUnk_08121068[];
 
 void Smoke(Entity* this) {
-    gUnk_08121060[this->entityType.form](this);
+    gUnk_08121060[this->type](this);
 }
 
 void sub_0808A40C(Entity* this) {
diff --git a/src/object/swordsmanNewsletter.c b/src/object/swordsmanNewsletter.c
index 229980ea..e74d2ee1 100644
--- a/src/object/swordsmanNewsletter.c
+++ b/src/object/swordsmanNewsletter.c
@@ -15,7 +15,7 @@ void SwordsmanNewsletter(Entity* this) {
 
 void sub_080933D8(Entity* this) {
     this->action = 1;
-    this->frameIndex = this->entityType.form;
+    this->frameIndex = this->type;
     UpdateSpriteForCollisionLayer(this);
     this->hitbox = &gUnk_081228A8;
     sub_080787B4(this);
@@ -24,6 +24,6 @@ void sub_080933D8(Entity* this) {
 void sub_080933FC(Entity* this) {
     if (this->interactType != 0) {
         this->interactType = 0;
-        TextboxNoOverlap(gUnk_081228B8[this->entityType.form], this);
+        TextboxNoOverlap(gUnk_081228B8[this->type], this);
     }
 }
diff --git a/src/object/thoughtBubble.c b/src/object/thoughtBubble.c
index 13996ad9..596cb382 100644
--- a/src/object/thoughtBubble.c
+++ b/src/object/thoughtBubble.c
@@ -21,8 +21,8 @@ void ThoughtBubble_Init(Entity* this) {
         this->actionDelay = 0x2d;
     }
     this->spriteOrientation.flipY = 1;
-    InitializeAnimation(this, this->entityType.parameter);
-    SoundReq(ThoughtBubble_SFX[this->entityType.parameter]);
+    InitializeAnimation(this, this->type2);
+    SoundReq(ThoughtBubble_SFX[this->type2]);
 }
 
 void ThoughtBubble_Update(Entity* this) {
@@ -31,7 +31,7 @@ void ThoughtBubble_Update(Entity* this) {
         this->y.HALF.HI = this->parent->y.HALF.HI;
         this->height.HALF.HI = this->parent->height.HALF.HI;
     }
-    if ((this->entityType).parameter != 2) {
+    if (this->type2 != 2) {
         if (--this->actionDelay == 0) {
             DeleteThisEntity();
         }
diff --git a/src/object/windTribeFlag.c b/src/object/windTribeFlag.c
index 01d7e554..9c769808 100644
--- a/src/object/windTribeFlag.c
+++ b/src/object/windTribeFlag.c
@@ -6,7 +6,7 @@ void WindTribeFlag(Entity* this) {
     if (this->action == 0) {
         this->action++;
         this->collisionLayer = 2;
-        if ((this->entityType).form == 0) {
+        if (this->type == 0) {
             this->spriteSettings.b.flipX = 0;
         } else {
             this->spriteSettings.b.flipX = 1;
diff --git a/src/object/windcrest.c b/src/object/windcrest.c
index 967e7004..efc11dc4 100644
--- a/src/object/windcrest.c
+++ b/src/object/windcrest.c
@@ -28,6 +28,6 @@ void sub_080A2124(Entity* this) {
 
 void Windcrest_Unlock(Entity* this) {
     SoundReq(0x72);
-    gSave.windcrests = gSave.windcrests | 1 << (this->entityType.parameter + 0x18);
+    gSave.windcrests = gSave.windcrests | 1 << (this->type2 + 0x18);
     CreateFx(this, 0x46, 0);
 }
diff --git a/src/script.c b/src/script.c
index a7427cde..494e0ae5 100644
--- a/src/script.c
+++ b/src/script.c
@@ -389,7 +389,7 @@ void sub_0807DDE4(Entity* entity) {
         loopVar = loopVar ^ switchVar;
         switch (switchVar) {
             case 2:
-                if (entity->entityType.type == 7) {
+                if (entity->kind == 7) {
                     sub_0806ED78(entity);
                 } else {
                     sub_0800445C(entity);
diff --git a/src/sub_0805E374.c b/src/sub_0805E374.c
index ebad1b0e..5767e6da 100644
--- a/src/sub_0805E374.c
+++ b/src/sub_0805E374.c
@@ -10,5 +10,5 @@ Entity* sub_0805E374(Entity* param_1) {
     if (r3 != '\x02') {
         array = gUnk_081091EE;
     }
-    return sub_0805E3A0(param_1, array[(param_1->entityType).type]);
+    return sub_0805E3A0(param_1, array[param_1->kind]);
 }