Sync src/battle_util.c with pokeemerald

include/constants/battle.h

@@ -316,6 +316,9 @@
 #define NUM_CASTFORM_FORMS  4
 #define CASTFORM_SUBSTITUTE (1 << 7)
 
+#define FLEE_ITEM    1
+#define FLEE_ABILITY 2
+
 // Return value for IsRunningFromBattleImpossible.
 #define BATTLE_RUN_SUCCESS        0
 #define BATTLE_RUN_FORBIDDEN      1
@@ -351,4 +354,7 @@
 #define B_TEXT_FLAG_NPC_CONTEXT_FONT    (1 << 6)
 #define B_TEXT_FLAG_WINDOW_CLEAR        (1 << 7)
 
+// Indicator for the party summary bar to display an empty slot.
+#define HP_EMPTY_SLOT 0xFFFF
+
 #endif // GUARD_CONSTANTS_BATTLE_H

include/constants/pokemon.h

@@ -224,7 +224,6 @@
 #define EV_ITEM_RAISE_LIMIT 100
 
 #define PARTY_SIZE 6
-#define UNOWN_FORM_COUNT 28
 #define BOX_NAME_LENGTH 8
 
 #define EVO_MODE_NORMAL     0