Decomped IsMoveUsable()

2 files changed, 45 insertions, 4 deletions

diff --git a/src/move_util.c b/src/move_util.c
index c5c87ad..4487862 100644
--- a/src/move_util.c
+++ b/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;
+}
diff --git a/src/moves.c b/src/moves.c
index 8a2606f..bd5ccfa 100644
--- a/src/moves.c
+++ b/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;
 }