Decomped IsMoveUsable()

asm/code_805744C.s

@@ -4,78 +4,7 @@
   	.syntax unified
 
   	.text
-
-	thumb_func_start IsMoveUsable
-IsMoveUsable:
-	push {r4-r6,lr}
-	adds r4, r1, 0
-	lsls r2, 24
-	lsrs r2, 24
-	ldr r6, [r0, 0x70]
-	ldrh r1, [r4, 0x2]
-	ldr r0, _08057430
-	cmp r1, r0
-	beq _08057442
-	ldrb r1, [r4]
-	movs r0, 0x20
-	ands r0, r1
-	cmp r0, 0
-	bne _0805743E
-	ldrb r1, [r4, 0x1]
-	movs r0, 0x1
-	ands r0, r1
-	cmp r0, 0
-	bne _0805743E
-	cmp r2, 0
-	beq _08057442
-	ldrb r0, [r4, 0x4]
-	cmp r0, 0
-	beq _0805743E
-	adds r0, r6, 0
-	adds r0, 0xBC
-	ldrb r1, [r0]
-	adds r5, r0, 0
-	cmp r1, 0x5
-	bne _08057414
-	adds r0, r4, 0
-	bl MoveDealsDirectDamage
-	lsls r0, 24
-	cmp r0, 0
-	beq _0805743E
-_08057414:
-	ldrb r0, [r5]
-	cmp r0, 0x6
-	bne _08057442
-	ldrh r1, [r4, 0x2]
-	movs r0, 0xB0
-	lsls r0, 1
-	cmp r1, r0
-	bne _08057434
-	movs r1, 0x9C
-	lsls r1, 1
-	adds r0, r6, r1
-	ldrb r1, [r0]
-	b _08057436
-	.align 2, 0
-_08057430: .4byte 0x00000163
-_08057434:
-	ldrb r1, [r4]
-_08057436:
-	movs r0, 0x10
-	ands r0, r1
-	cmp r0, 0
-	bne _08057442
-_0805743E:
-	movs r0, 0
-	b _08057444
-_08057442:
-	movs r0, 0x1
-_08057444:
-	pop {r4-r6}
-	pop {r1}
-	bx r1
-	thumb_func_end IsMoveUsable
-
+  
 	thumb_func_start sub_805744C
 sub_805744C:
 	push {r4-r6,lr}

include/move_util.h

@@ -4,5 +4,6 @@
 #include "dungeon_entity.h"
 
 bool8 IsMoveIndexUsable(struct DungeonEntity *pokemon, s32 moveIndex, bool8 hasPPChecker);
+bool8 IsMoveUsable(struct DungeonEntity *pokemon, struct PokemonMove *move, bool8 hasPPChecker);
 
 #endif

include/moves.h

@@ -18,14 +18,14 @@ s32 GetMoveAccuracy(struct PokemonMove *move, u32 accuracyType);
 u32 GetMoveMaxPP(struct PokemonMove *move);
 u8 GetMoveUnk12(struct PokemonMove *move);
 u8 GetMoveCriticalHitChance(struct PokemonMove *move);
-u8 MoveCannotHitFrozen(struct PokemonMove *move);
-u8 MoveDealsDirectDamage(struct PokemonMove *move);
+bool8 MoveCannotHitFrozen(struct PokemonMove *move);
+bool8 MoveDealsDirectDamage(struct PokemonMove *move);
 u32 GetMoveRangeType(struct PokemonMove *move);
 void sub_8092C84(u8 *buffer, u16 moveID);
 u8 *GetMoveUseText(u16 moveID);
-u8 GetMoveAffectedByMagicCoat(u16 moveID);
-u8 GetMoveTargetsUser(u16 moveID);
-u8 GetMoveAffectedByMuzzled(u16 moveID);
+bool8 GetMoveAffectedByMagicCoat(u16 moveID);
+bool8 GetMoveTargetsUser(u16 moveID);
+bool8 GetMoveAffectedByMuzzled(u16 moveID);
 bool8 IsBlockedBySoundproof(struct PokemonMove *move);
 bool8 DoesMoveCharge(u16 move);
 

ld_script.txt

@@ -209,7 +209,7 @@ SECTIONS {
         src/charge_move.o(.text);
         asm/code_8057144.o(.text);
         src/move_util.o(.text);
-        asm/code_80573CC.o(.text);
+        asm/code_805744C.o(.text);
         src/code_8057824.o(.text);
         asm/code_8057824.o(.text);
         src/status_checker.o(.text);

src/move_util.c

@@ -1,7 +1,9 @@
 #include "global.h"
 #include "move_util.h"
 
-extern bool8 IsMoveUsable(struct DungeonEntity *pokemon, struct PokemonMove *move, bool8 hasPPChecker);
+#include "constants/move_id.h"
+#include "constants/status.h"
+#include "moves.h"
 
 bool8 IsMoveIndexUsable(struct DungeonEntity *pokemon, s32 moveIndex, bool8 hasPPChecker)
 {
@@ -45,3 +47,42 @@ bool8 IsMoveIndexUsable(struct DungeonEntity *pokemon, s32 moveIndex, bool8 hasP
     }
     goto incMoveIndex;
 }
+
+bool8 IsMoveUsable(struct DungeonEntity *pokemon, struct PokemonMove *move, bool8 hasPPChecker)
+{
+    struct DungeonEntityData *pokemonData = pokemon->entityData;
+    if (move->moveID == MOVE_REGULAR_ATTACK)
+    {
+        return TRUE;
+    }
+    if (move->moveFlags & MOVE_FLAG_DISABLED || move->moveFlags2 & MOVE_FLAG_SEALED)
+    {
+        return FALSE;
+    }
+    if (hasPPChecker)
+    {
+        if (move->PP == 0)
+        {
+            return FALSE;
+        }
+        if (pokemonData->volatileStatus == VOLATILE_STATUS_TAUNTED && !MoveDealsDirectDamage(move))
+        {
+            return FALSE;
+        }
+        if (pokemonData->volatileStatus == VOLATILE_STATUS_ENCORE)
+        {
+            if (move->moveID == MOVE_STRUGGLE)
+            {
+                if (!(pokemonData->struggleMoveFlags & MOVE_FLAG_LAST_USED))
+                {
+                    return FALSE;
+                }
+            }
+            else if (!(move->moveFlags & MOVE_FLAG_LAST_USED))
+            {
+                return FALSE;
+            }
+        }
+    }
+    return TRUE;
+}

src/moves.c

@@ -297,17 +297,17 @@ u8 *GetMoveUseText(u16 moveID)
     return gMovesData[moveID].useText;
 }
 
-u8 GetMoveAffectedByMagicCoat(u16 moveID)
+bool8 GetMoveAffectedByMagicCoat(u16 moveID)
 {
     return gMovesData[moveID].affectedByMagicCoat;
 }
 
-u8 GetMoveTargetsUser(u16 moveID)
+bool8 GetMoveTargetsUser(u16 moveID)
 {
     return gMovesData[moveID].targetsUser;
 }
 
-u8 GetMoveAffectedByMuzzled(u16 moveID)
+bool8 GetMoveAffectedByMuzzled(u16 moveID)
 {
     return gMovesData[moveID].affectedByMuzzled;
 }