Various minor cleanups (#1218)

* Fix assert in z_en_horse.c

* Fix UB sceneFlags access in z_en_elf.c

* Add Object_Spawn to public object functions

This function is used externally in MM and works as a standalone, so it most likely belongs to the public interface

* Fix float literals to always use lowercase e for the exponent

* Remove "mininap" in one of the map data variables

sDgnMinimapTexIndexBase is also used for the pause menu map so naming it for the minimap turned out to be inaccurate

include/functions.h

@@ -1191,6 +1191,7 @@ void Sample_Init(GameState* thisx);
 void Inventory_ChangeEquipment(s16 equipment, u16 value);
 u8 Inventory_DeleteEquipment(GlobalContext* globalCtx, s16 equipment);
 void Inventory_ChangeUpgrade(s16 upgrade, s16 value);
+s32 Object_Spawn(ObjectContext* objectCtx, s16 objectId);
 void Object_InitBank(GlobalContext* globalCtx, ObjectContext* objectCtx);
 void Object_UpdateBank(ObjectContext* objectCtx);
 s32 Object_GetIndex(ObjectContext* objectCtx, s16 objectId);

include/z64.h

@@ -1433,7 +1433,7 @@ typedef struct {
     /* 0x2C */ s16*  owMinimapPosX;
     /* 0x30 */ s16*  owMinimapPosY;
     /* 0x34 */ s16 (*owCompassInfo)[4]; // [X scale, Y scale, X offset, Y offset]
-    /* 0x38 */ s16*  dgnMinimapTexIndexBase; // dungeon minimap texture index base
+    /* 0x38 */ s16*  dgnTexIndexBase; // dungeon texture index base
     /* 0x3C */ s16 (*dgnCompassInfo)[4]; // [X scale, Y scale, X offset, Y offset]
     /* 0x40 */ s16*  owMinimapWidth;
     /* 0x44 */ s16*  owMinimapHeight;