diff --git a/include/functions.h b/include/functions.h
index 59505428..ce06665c 100644
--- a/include/functions.h
+++ b/include/functions.h
@@ -215,7 +215,7 @@ extern u32 sub_08079B24(void);
 extern void sub_08079BD8(Entity*);
 extern u32 sub_08079D48();
 extern void sub_08079D84(void);
-extern u32 sub_08079F8C(void);
+extern bool32 sub_08079F8C(void);
 extern u32 sub_08079FC4(u32);
 extern void sub_0807A050(void);
 extern void sub_0807A5B8(u32);
diff --git a/include/object.h b/include/object.h
index ef3d2d08..7164e413 100644
--- a/include/object.h
+++ b/include/object.h
@@ -20,7 +20,7 @@ extern void sub_080787B4(Entity*);
 extern void sub_0808C650(Entity*, u32);
 extern u32 sub_0808C67C(void);
 extern void sub_0808C688(void);
-extern void sub_080A2BE4(Entity*, u32);
+extern void sub_080A2BE4(Entity*, bool32);
 
 void CreateDust(Entity* parent);
 void CreateDustAt(s32, s32, u32);
diff --git a/src/collision.c b/src/collision.c
index 52bd8d27..6c4f9a5b 100644
--- a/src/collision.c
+++ b/src/collision.c
@@ -61,7 +61,7 @@ void CollisionMain(void) {
         prio = gPriorityHandler.ent_priority;
 
     // if any priority is set, dont do collision
-    if (prio)
+    if (prio != 0)
         return;
 
     doCollision = &ram_CollideAll;
diff --git a/src/enemy/mazaalMacro.c b/src/enemy/mazaalMacro.c
index 31de7ed6..21da5f89 100644
--- a/src/enemy/mazaalMacro.c
+++ b/src/enemy/mazaalMacro.c
@@ -144,7 +144,7 @@ void sub_08034E68(Entity* this) {
             sub_08035120(this);
         }
         if (gRoomTransition.field_0x39 == 0) {
-            if (sub_08079F8C() != 0) {
+            if (sub_08079F8C()) {
                 this->action = 3;
                 scriptExecutionContext = StartCutscene(this, (u16*)script_MazaalMacroDefeated);
                 *(ScriptExecutionContext**)&this->cutsceneBeh = scriptExecutionContext;
diff --git a/src/enemy/vaatiWrath.c b/src/enemy/vaatiWrath.c
index 2d8c3619..f2c8c769 100644
--- a/src/enemy/vaatiWrath.c
+++ b/src/enemy/vaatiWrath.c
@@ -561,7 +561,7 @@ void VaatiWrathType0ActionD(Entity* this) {
 void sub_08041BE8(Entity* this) {
     Entity* entity;
 
-    if (sub_08079F8C() != 0) {
+    if (sub_08079F8C()) {
         this->subAction = 1;
         this->actionDelay = 120;
         this->updatePriority = PRIO_NO_BLOCK;
diff --git a/src/object/book.c b/src/object/book.c
index 89005c80..3c9e12b5 100644
--- a/src/object/book.c
+++ b/src/object/book.c
@@ -40,7 +40,7 @@ void sub_0809B3C4(Entity* this) {
     }
 
     UpdateSpriteForCollisionLayer(this);
-    InitAnimationForceUpdate(this, this->type + 0x39);
+    InitAnimationForceUpdate(this, this->type + ITEM_QST_BOOK1);
 
     switch (this->type2) {
         case 0:
@@ -88,8 +88,8 @@ void sub_0809B4A8(Entity* this) {
 
         this->action = 2;
         this->actionDelay = 30;
-        this->speed = 64;
-        this->direction = 16;
+        this->speed = 0x40;
+        this->direction = 0x10;
 
         gPlayerState.pushedObject = TREE_THORNS;
         gPlayerState.queued_action = PLAYER_PUSH;
@@ -100,7 +100,7 @@ void sub_0809B4A8(Entity* this) {
         gPlayerEntity.direction = gPlayerEntity.animationState << 2;
         EnqueueSFX(SFX_10F);
     } else {
-        this->actionDelay = 0x16;
+        this->actionDelay = 22;
     }
 }
 
@@ -108,12 +108,12 @@ void sub_0809B524(Entity* this) {
     if (--this->actionDelay == 0) {
         if (--this->field_0xf == 0) {
             this->action = 3;
-            this->y.HALF.HI += 32;
-            this->z.HALF.HI -= 32;
+            this->y.HALF.HI += 0x20;
+            this->z.HALF.HI -= 0x20;
         } else {
             this->action = 1;
             this->actionDelay = 22;
-            this->field_0x80.HALF.LO = 24;
+            this->field_0x80.HALF.LO = 0x18;
         }
     }
 
@@ -142,7 +142,7 @@ void sub_0809B5B4(Entity* this) {
     if (gPlayerState.flags & PL_MINISH) {
         sub_0800445C(this);
     } else if (IsCollidingPlayer(this)) {
-        CreateItemEntity(this->type + 0x39, 0, 0);
+        CreateItemEntity(this->type + ITEM_QST_BOOK1, 0, 0);
         DeleteThisEntity();
     }
 }
diff --git a/src/object/floatingPlatform.c b/src/object/floatingPlatform.c
index d62d7603..9701ba66 100644
--- a/src/object/floatingPlatform.c
+++ b/src/object/floatingPlatform.c
@@ -33,12 +33,11 @@ void sub_080860D8(FloatingPlatformEntity* this) {
 }
 
 void sub_0808611C(FloatingPlatformEntity* this) {
-    int iVar2;
+    bool32 iVar2 = sub_08086168(this);
 
-    iVar2 = sub_08086168(this);
     if (super->actionDelay != 0 && super->parent->actionDelay == 0) {
 
-        if (iVar2 != 0) {
+        if (iVar2) {
             super->parent->actionDelay++;
         }
 
@@ -46,7 +45,7 @@ void sub_0808611C(FloatingPlatformEntity* this) {
     } else if (super->actionDelay == 0) {
         sub_080A2BE4(super, iVar2);
     } else {
-        sub_080A2BE4(super, 0);
+        sub_080A2BE4(super, FALSE);
     }
 
     if (--this->unk70 == 0) {
diff --git a/src/object/gyorgBossObject.c b/src/object/gyorgBossObject.c
index b63b8d81..ebbec424 100644
--- a/src/object/gyorgBossObject.c
+++ b/src/object/gyorgBossObject.c
@@ -10,7 +10,6 @@
 
 extern const ScreenTransitionData gUnk_0813ABD0;
 
-extern u32 sub_08079F8C(void);
 struct GyorgChildSpawns {
     s16 offsetX;
     s16 offsetY;
diff --git a/src/object/lilypadSmall.c b/src/object/lilypadSmall.c
index ce03ff99..eed1578f 100644
--- a/src/object/lilypadSmall.c
+++ b/src/object/lilypadSmall.c
@@ -4,7 +4,7 @@
 extern u16 gUnk_08123318[];
 
 static void sub_08097B24(Entity* this);
-static u32 sub_08097ADC(Entity* this);
+static bool32 sub_08097ADC(Entity* this);
 
 void LilypadSmall(Entity* this) {
     u32 rand;
@@ -29,19 +29,19 @@ void LilypadSmall(Entity* this) {
     }
 }
 
-static u32 sub_08097ADC(Entity* this) {
-    if ((gPlayerState.flags & PL_MINISH) == 0) {
-        return 0;
+static bool32 sub_08097ADC(Entity* this) {
+    if (!(gPlayerState.flags & PL_MINISH)) {
+        return FALSE;
     } else if (EntityInRectRadius(this, &gPlayerEntity, 8, 8) == 0) {
-        return 0;
-    } else if (sub_08079F8C() == 0) {
-        return 0;
+        return FALSE;
+    } else if (!sub_08079F8C()) {
+        return FALSE;
     } else {
         gPlayerState.field_0x14 = 1;
         if (gPlayerEntity.z.HALF.HI != 0) {
-            return 0;
+            return FALSE;
         } else {
-            return 1;
+            return TRUE;
         }
     }
 }
@@ -52,7 +52,7 @@ static void sub_08097B24(Entity* this) {
     u16* temp3;
 
     if (--this->actionDelay == 0) {
-        this->actionDelay = 0x5a;
+        this->actionDelay = 90;
         this->frameIndex = (this->frameIndex + 1) & 3;
     }
     temp3 = gUnk_08123318;
diff --git a/src/objectUtils.c b/src/objectUtils.c
index 6fdbe902..c4a93c17 100644
--- a/src/objectUtils.c
+++ b/src/objectUtils.c
@@ -264,7 +264,7 @@ void CreateSparkle(Entity* entity) {
     }
 }
 
-NONMATCH("asm/non_matching/objectUtils/sub_080A2BE4.inc", void sub_080A2BE4(Entity* this, u32 param_2)) {
+NONMATCH("asm/non_matching/objectUtils/sub_080A2BE4.inc", void sub_080A2BE4(Entity* this, bool32 param_2)) {
     s16 oldValue;
     s32 diff;
     u16 newValue;