1 files changed, 92 insertions, 0 deletions
diff --git a/include/constants/item_effects.h b/include/constants/item_effects.h
new file mode 100644
index 000000000..5086b28e6
--- /dev/null
+++ b/include/constants/item_effects.h
@@ -0,0 +1,92 @@
+#ifndef POKERUBY_CONSTANTS_ITEM_EFFECTS_H
+#define POKERUBY_CONSTANTS_ITEM_EFFECTS_H
+
+// field 0 masks
+#define ITEM0_X_ATTACK          0x0F
+#define ITEM0_DIRE_HIT          0x30 // Works the same way as the move Focus Energy.
+#define ITEM0_SACRED_ASH        0x40
+#define ITEM0_INFATUATION       0x80
+
+// field 1 masks
+#define ITEM1_X_SPEED           0x0F
+#define ITEM1_X_DEFEND          0xF0
+
+// field 2 masks
+#define ITEM2_X_SPATK           0x0F
+#define ITEM2_X_ACCURACY        0xF0
+
+// field 3 masks
+#define ITEM3_CONFUSION         0x1
+#define ITEM3_PARALYSIS         0x2
+#define ITEM3_FREEZE            0x4
+#define ITEM3_BURN              0x8
+#define ITEM3_POISON            0x10
+#define ITEM3_SLEEP             0x20
+#define ITEM3_LEVEL_UP          0x40
+#define ITEM3_GUARD_SPEC        0x80 // Works the same way as the move Mist.
+
+#define ITEM3_STATUS_ALL        (ITEM3_CONFUSION | ITEM3_PARALYSIS | ITEM3_FREEZE | ITEM3_BURN | ITEM3_POISON | ITEM3_SLEEP)
+
+// field 4 masks
+#define ITEM4_EV_HP             0x1
+#define ITEM4_EV_ATK            0x2
+#define ITEM4_HEAL_HP           0x4
+#define ITEM4_HEAL_PP           0x8
+#define ITEM4_HEAL_PP_ONE       0x10
+#define ITEM4_PP_UP             0x20
+#define ITEM4_REVIVE            0x40
+#define ITEM4_EVO_STONE         0x80
+
+// field 5 masks
+#define ITEM5_EV_DEF            0x1
+#define ITEM5_EV_SPEED          0x2
+#define ITEM5_EV_SPDEF          0x4
+#define ITEM5_EV_SPATK          0x8
+#define ITEM5_PP_MAX            0x10
+#define ITEM5_FRIENDSHIP_LOW    0x20
+#define ITEM5_FRIENDSHIP_MID    0x40
+#define ITEM5_FRIENDSHIP_HIGH   0x80
+
+#define ITEM5_FRIENDSHIP_ALL    (ITEM5_FRIENDSHIP_LOW | ITEM5_FRIENDSHIP_MID | ITEM5_FRIENDSHIP_HIGH)
+
+// fields 6 and onwards are item-specific arguments
+#define ITEM_EFFECT_ARG_START 6
+
+// Special HP recovery amounts for ITEM4_HEAL_HP
+#define ITEM6_HEAL_HP_FULL   ((u8) -1)
+#define ITEM6_HEAL_HP_HALF   ((u8) -2)
+#define ITEM6_HEAL_HP_LVL_UP ((u8) -3)
+
+// Special PP recovery amounts for ITEM4_HEAL_PP
+#define ITEM6_HEAL_PP_FULL   0x7F
+
+// Amount of EV modified by ITEM4_EV_HP, ITEM4_EV_ATK, ITEM5_EV_DEF, ITEM5_EV_SPEED, ITEM5_EV_SPDEF and ITEM5_EV_SPATK
+#define ITEM6_ADD_EV       10
+#define ITEM6_SUBTRACT_EV -10
+
+// Used for GetItemEffectType.
+#define ITEM_EFFECT_X_ITEM 0
+#define ITEM_EFFECT_RAISE_LEVEL 1
+#define ITEM_EFFECT_HEAL_HP 2
+#define ITEM_EFFECT_CURE_POISON 3
+#define ITEM_EFFECT_CURE_SLEEP 4
+#define ITEM_EFFECT_CURE_BURN 5
+#define ITEM_EFFECT_CURE_FREEZE 6
+#define ITEM_EFFECT_CURE_PARALYSIS 7
+#define ITEM_EFFECT_CURE_CONFUSION 8
+#define ITEM_EFFECT_CURE_INFATUATION 9
+#define ITEM_EFFECT_SACRED_ASH 10
+#define ITEM_EFFECT_CURE_ALL_STATUS 11
+#define ITEM_EFFECT_ATK_EV 12
+#define ITEM_EFFECT_HP_EV 13
+#define ITEM_EFFECT_SPATK_EV 14
+#define ITEM_EFFECT_SPDEF_EV 15
+#define ITEM_EFFECT_SPEED_EV 16
+#define ITEM_EFFECT_DEF_EV 17
+#define ITEM_EFFECT_EVO_STONE 18
+#define ITEM_EFFECT_PP_UP 19
+#define ITEM_EFFECT_PP_MAX 20
+#define ITEM_EFFECT_HEAL_PP 21
+#define ITEM_EFFECT_NONE 22
+
+#endif // POKERUBY_CONSTANTS_ITEM_EFFECTS_H