AI handles multi-strike and fixed dmg moves

Does not account for Parental Bond or Beat Up yet as those require some functions from #1676.

include/battle_util.h

@@ -156,7 +156,7 @@ void BufferStatChange(u8 battlerId, u8 statId, u8 stringId);
 void DoBurmyFormChange(u32 monId);
 bool32 BlocksPrankster(u16 move, u8 battlerPrankster, u8 battlerDef, bool32 checkTarget);
 
-// ability checks
+// Ability checks
 bool32 IsRolePlayBannedAbilityAtk(u16 ability);
 bool32 IsRolePlayBannedAbility(u16 ability);
 bool32 IsSkillSwapBannedAbility(u16 ability);
@@ -173,4 +173,7 @@ bool32 CanBeFrozen(u8 battlerId);
 bool32 CanBeConfused(u8 battlerId);
 bool32 IsBattlerTerrainAffected(u8 battlerId, u32 terrainFlag);
 
+// Move checks
+bool8 IsTwoStrikesMove(u16 move);
+
 #endif // GUARD_BATTLE_UTIL_H

src/battle_ai_util.c

@@ -733,20 +733,85 @@ s32 AI_CalcDamage(u16 move, u8 battlerAtk, u8 battlerDef)
     else
         dmg = (critDmg + normalDmg * (critChance - 1)) / critChance;
 
-    // handle dynamic move damage
+    // Handle dynamic move damage
     switch (gBattleMoves[move].effect)
     {
     case EFFECT_LEVEL_DAMAGE:
     case EFFECT_PSYWAVE:
-        //psywave's expected damage is equal to the user's level
+    {
-        dmg = gBattleMons[battlerAtk].level;
+        // Psywave's expected damage is equal to the user's level
+        if (AI_GetMoveEffectiveness(move, battlerAtk, battlerDef) == AI_EFFECTIVENESS_x0)
+            dmg = 0;
+        else if (AI_DATA->atkAbility == ABILITY_PARENTAL_BOND)
+            dmg = 2 * gBattleMons[battlerAtk].level;
+        else
+            dmg = gBattleMons[battlerAtk].level;
         break;
+    }
     case EFFECT_DRAGON_RAGE:
-        dmg = 40;
+    {
+        if (AI_GetMoveEffectiveness(move, battlerAtk, battlerDef) == AI_EFFECTIVENESS_x0)
+            dmg = 0;
+        else if (AI_DATA->atkAbility == ABILITY_PARENTAL_BOND)
+            dmg = 80;
+        else
+            dmg = 40;
         break;
+    }
     case EFFECT_SONICBOOM:
-        dmg = 20;
+    {
+        if (AI_GetMoveEffectiveness(move, battlerAtk, battlerDef) == AI_EFFECTIVENESS_x0)
+            dmg = 0;
+        else if (AI_DATA->atkAbility == ABILITY_PARENTAL_BOND)
+            dmg = 40;
+        else
+            dmg = 20;
         break;
+    }
+    case EFFECT_MULTI_HIT:
+    {
+        if (AI_DATA->atkAbility == ABILITY_SKILL_LINK)
+            dmg *= 5;
+        else
+            dmg *= 3; // Average number of hits is three
+        break;
+    }
+    case EFFECT_TRIPLE_KICK:
+    {
+        if (AI_DATA->atkAbility == ABILITY_SKILL_LINK)
+            dmg *= 6; // Skill Link ensures the 2nd and 3rd hits will connect if the first does
+        else
+            dmg *= 5; // Triple Kick/Triple Axel's average power is almost 5x its base power
+        break;
+    }
+    case EFFECT_ENDEAVOR:
+    {
+        if (AI_GetMoveEffectiveness(move, battlerAtk, battlerDef) == AI_EFFECTIVENESS_x0)
+            dmg = 0;
+        else
+            // If target has less HP than user, Endeavor does no damage
+            dmg = max(0, gBattleMons[battlerDef].hp - gBattleMons[battlerAtk].hp);
+        break;
+    }
+    case EFFECT_SUPER_FANG:
+    {
+        if (AI_GetMoveEffectiveness(move, battlerAtk, battlerDef) == AI_EFFECTIVENESS_x0)
+            dmg = 0;
+        // Two hits of Super Fang halves HP twice, leaving target with 25% HP
+        else if (AI_DATA->atkAbility == ABILITY_PARENTAL_BOND)
+            dmg = gBattleMons[battlerDef].hp * 3 / 4;
+        else
+            dmg = gBattleMons[battlerDef].hp / 2;
+        break;
+    }
+    case EFFECT_FINAL_GAMBIT:
+    {
+        if (AI_GetMoveEffectiveness(move, battlerAtk, battlerDef) == AI_EFFECTIVENESS_x0)
+            dmg = 0;
+        else
+            dmg = gBattleMons[battlerAtk].hp;
+        break;
+    }
     //case EFFECT_METAL_BURST:
     //case EFFECT_COUNTER:
     default:
@@ -755,6 +820,17 @@ s32 AI_CalcDamage(u16 move, u8 battlerAtk, u8 battlerDef)
         break;
     }
 
+    // Handle other multi-strike moves
+    if (IsTwoStrikesMove(move))
+    {
+        dmg *= 2;
+    }
+    else if (move == MOVE_SURGING_STRIKES 
+             || (move == MOVE_WATER_SHURIKEN && gBattleMons[battlerAtk].species == SPECIES_GRENINJA_ASH))
+    {
+        dmg *= 3;
+    }
+
     RestoreBattlerData(battlerAtk);
     RestoreBattlerData(battlerDef);
 
@@ -2653,7 +2729,7 @@ bool32 AI_CanPoison(u8 battlerAtk, u8 battlerDef, u16 defAbility, u16 move, u16
     return TRUE;
 }
 
-static bool32 CanBeParalyzed(u8 battler, u16 ability)
+static bool32 AI_CanBeParalyzed(u8 battler, u16 ability)
 {
     if (ability == ABILITY_LIMBER
       || IS_BATTLER_OF_TYPE(battler, TYPE_ELECTRIC)
@@ -2665,7 +2741,7 @@ static bool32 CanBeParalyzed(u8 battler, u16 ability)
 
 bool32 AI_CanParalyze(u8 battlerAtk, u8 battlerDef, u16 defAbility, u16 move, u16 partnerMove)
 {
-    if (!CanBeParalyzed(battlerDef, defAbility)
+    if (!AI_CanBeParalyzed(battlerDef, defAbility)
       || AI_GetMoveEffectiveness(move, battlerAtk, battlerDef) == AI_EFFECTIVENESS_x0
       || gSideStatuses[GetBattlerSide(battlerDef)] & SIDE_STATUS_SAFEGUARD
       || DoesSubstituteBlockMove(battlerAtk, battlerDef, move)

src/battle_util.c

@@ -217,6 +217,20 @@ static const u16 sEntrainmentTargetSimpleBeamBannedAbilities[] =
     ABILITY_GULP_MISSILE,
 };
 
+static const u16 sTwoStrikeMoves[] =
+{
+    MOVE_BONEMERANG,
+    MOVE_DOUBLE_HIT,
+    MOVE_DOUBLE_IRON_BASH,
+    MOVE_DOUBLE_KICK,
+    MOVE_DRAGON_DARTS,
+    MOVE_DUAL_CHOP,
+    MOVE_DUAL_WINGBEAT,
+    MOVE_GEAR_GRIND,
+    MOVE_TWINEEDLE,
+    0xFFFF
+};
+
 bool32 IsAffectedByFollowMe(u32 battlerAtk, u32 defSide, u32 move)
 {
     u32 ability = GetBattlerAbility(battlerAtk);
@@ -9509,3 +9523,15 @@ bool32 BlocksPrankster(u16 move, u8 battlerPrankster, u8 battlerDef, bool32 chec
     #endif
     return FALSE;
 }
+
+bool8 IsTwoStrikesMove(u16 move)
+{
+    u32 i;
+
+    for (i = 0; i < ARRAY_COUNT(sTwoStrikeMoves); i++)
+    {
+        if (move == sTwoStrikeMoves[i])
+            return TRUE;
+    }
+    return FALSE;
+}