Implemented explosive moves and Damp (#290)

* Implemented explosives

* Add Aftermath and Magic Guard interactions

* Adjust AI score for Mind Blown/Steel Beam

src/data/ability.ts

@@ -869,6 +869,13 @@ export class MoveTypeChangePowerMultiplierAbAttr extends VariableMoveTypeAbAttr
   }
 }
 
+export class FieldPreventExplosiveMovesAbAttr extends AbAttr {
+  apply(pokemon: Pokemon, passive: boolean, cancelled: Utils.BooleanHolder, args: any[]): boolean | Promise<boolean> {
+    cancelled.value = true;
+    return true;
+  }
+}
+
 export class MoveTypeChangeAttr extends PreAttackAbAttr {
   private newType: Type;
   private powerMultiplier: number;
@@ -2057,6 +2064,11 @@ export class PostFaintContactDamageAbAttr extends PostFaintAbAttr {
 
   applyPostFaint(pokemon: Pokemon, passive: boolean, attacker: Pokemon, move: PokemonMove, hitResult: HitResult, args: any[]): boolean {
     if (move.getMove().checkFlag(MoveFlags.MAKES_CONTACT, attacker, pokemon)) {
+      const cancelled = new Utils.BooleanHolder(false);
+      pokemon.scene.getField(true).map(p=>applyAbAttrs(FieldPreventExplosiveMovesAbAttr, p, cancelled))
+      if (cancelled) {
+        return false;
+      }
       attacker.damageAndUpdate(Math.ceil(attacker.getMaxHp() * (1 / this.damageRatio)), HitResult.OTHER);
       return true;
     }
@@ -2468,8 +2480,8 @@ export function initAbilities() {
       .attr(BlockOneHitKOAbAttr)
       .ignorable(),
     new Ability(Abilities.DAMP, 3)
-      .ignorable()
-      .unimplemented(),
+      .attr(FieldPreventExplosiveMovesAbAttr)
+      .ignorable(),
     new Ability(Abilities.LIMBER, 3)
       .attr(StatusEffectImmunityAbAttr, StatusEffect.PARALYSIS)
       .ignorable(),

src/data/move.ts

@@ -12,7 +12,7 @@ import * as Utils from "../utils";
 import { WeatherType } from "./weather";
 import { ArenaTagSide, ArenaTrapTag } from "./arena-tag";
 import { ArenaTagType } from "./enums/arena-tag-type";
-import { UnswappableAbilityAbAttr, UncopiableAbilityAbAttr, UnsuppressableAbilityAbAttr, NoTransformAbilityAbAttr, BlockRecoilDamageAttr, BlockOneHitKOAbAttr, IgnoreContactAbAttr, MaxMultiHitAbAttr, applyAbAttrs, BlockNonDirectDamageAbAttr, applyPreSwitchOutAbAttrs, PreSwitchOutAbAttr, applyPostDefendAbAttrs, PostDefendContactApplyStatusEffectAbAttr, MoveAbilityBypassAbAttr, ReverseDrainAbAttr } from "./ability";
+import { UnswappableAbilityAbAttr, UncopiableAbilityAbAttr, UnsuppressableAbilityAbAttr, NoTransformAbilityAbAttr, BlockRecoilDamageAttr, BlockOneHitKOAbAttr, IgnoreContactAbAttr, MaxMultiHitAbAttr, applyAbAttrs, BlockNonDirectDamageAbAttr, applyPreSwitchOutAbAttrs, PreSwitchOutAbAttr, applyPostDefendAbAttrs, PostDefendContactApplyStatusEffectAbAttr, MoveAbilityBypassAbAttr, ReverseDrainAbAttr, FieldPreventExplosiveMovesAbAttr } from "./ability";
 import { Abilities } from "./enums/abilities";
 import { allAbilities } from './ability';
 import { PokemonHeldItemModifier } from "../modifier/modifier";
@@ -725,6 +725,40 @@ export class SacrificialAttr extends MoveEffectAttr {
   }
 }
 
+export class HalfSacrificialAttr extends MoveEffectAttr {
+  constructor() {
+    super(true, MoveEffectTrigger.PRE_APPLY);
+  }
+
+  apply(user: Pokemon, target: Pokemon, move: Move, args: any[]): boolean {
+    if (!super.apply(user, target, move, args))
+      return false;
+
+    const cancelled = new Utils.BooleanHolder(false);
+    applyAbAttrs(BlockNonDirectDamageAbAttr, user, cancelled);
+    if (!cancelled){
+      user.damageAndUpdate(Math.ceil(user.getMaxHp()/2), HitResult.OTHER, false, true, true);
+    }    
+    return true;
+  }
+
+  getUserBenefitScore(user: Pokemon, target: Pokemon, move: Move): integer {
+    if (user.isBoss())
+      return -10;
+    return Math.ceil(((1 - user.getHpRatio()/2) * 10 - 10) * (target.getAttackTypeEffectiveness(move.type) - 0.5));
+  }
+}
+
+export class ExplosiveAttr extends MoveEffectAttr {
+  getCondition(): MoveCondition | MoveConditionFunc {
+      return (user, target, move) =>{
+        const cancelled = new Utils.BooleanHolder(false);
+        user.scene.getField(true).map(p=>applyAbAttrs(FieldPreventExplosiveMovesAbAttr, p, cancelled));
+        return !cancelled.value;
+      }
+  }
+}
+
 export enum MultiHitType {
   _2,
   _2_TO_5,
@@ -4000,6 +4034,7 @@ export function initMoves() {
       .attr(CopyMoveAttr)
       .ignoresVirtual(),
     new AttackMove(Moves.SELF_DESTRUCT, Type.NORMAL, MoveCategory.PHYSICAL, 200, 100, 5, -1, 0, 1)
+      .attr(ExplosiveAttr)
       .attr(SacrificialAttr)
       .makesContact(false)
       .target(MoveTarget.ALL_NEAR_OTHERS),
@@ -4090,6 +4125,7 @@ export function initMoves() {
     new AttackMove(Moves.CRABHAMMER, Type.WATER, MoveCategory.PHYSICAL, 100, 90, 10, -1, 0, 1)
       .attr(HighCritAttr),
     new AttackMove(Moves.EXPLOSION, Type.NORMAL, MoveCategory.PHYSICAL, 250, 100, 5, -1, 0, 1)
+      .attr(ExplosiveAttr)
       .attr(SacrificialAttr)
       .makesContact(false)
       .target(MoveTarget.ALL_NEAR_OTHERS),
@@ -5622,7 +5658,8 @@ export function initMoves() {
       .partial(),
     /* End Unused */
     new AttackMove(Moves.MIND_BLOWN, Type.FIRE, MoveCategory.SPECIAL, 150, 100, 5, -1, 0, 7)
-      .attr(RecoilAttr, true, 0.5)
+      .attr(ExplosiveAttr)
+      .attr(HalfSacrificialAttr)
       .target(MoveTarget.ALL_NEAR_OTHERS),
     new AttackMove(Moves.PLASMA_FISTS, Type.ELECTRIC, MoveCategory.PHYSICAL, 100, 100, 15, -1, 0, 7)
       .punchingMove()
@@ -5837,7 +5874,7 @@ export function initMoves() {
     new AttackMove(Moves.ETERNABEAM, Type.DRAGON, MoveCategory.SPECIAL, 160, 90, 5, -1, 0, 8)
       .attr(RechargeAttr),
     new AttackMove(Moves.STEEL_BEAM, Type.STEEL, MoveCategory.SPECIAL, 140, 95, 5, -1, 0, 8)
-      .attr(RecoilAttr, true, 0.5),
+      .attr(HalfSacrificialAttr),
     new AttackMove(Moves.EXPANDING_FORCE, Type.PSYCHIC, MoveCategory.SPECIAL, 80, 100, 10, -1, 0, 8)
       .partial(),
     new AttackMove(Moves.STEEL_ROLLER, Type.STEEL, MoveCategory.PHYSICAL, 130, 100, 5, -1, 0, 8)
@@ -5858,8 +5895,10 @@ export function initMoves() {
       .attr(StatusEffectAttr, StatusEffect.POISON)
       .partial(),
     new AttackMove(Moves.MISTY_EXPLOSION, Type.FAIRY, MoveCategory.SPECIAL, 100, 100, 5, -1, 0, 8)
+      .attr(ExplosiveAttr)
+      .attr(SacrificialAttr)
       .target(MoveTarget.ALL_NEAR_OTHERS)
-      .partial(),
+      .attr(MovePowerMultiplierAttr, (user, target, move) => user.scene.arena.getTerrainType() === TerrainType.MISTY && user.isGrounded() ? 1.5 : 1),
     new AttackMove(Moves.GRASSY_GLIDE, Type.GRASS, MoveCategory.PHYSICAL, 55, 100, 20, -1, 0, 8)
       .partial(),
     new AttackMove(Moves.RISING_VOLTAGE, Type.ELECTRIC, MoveCategory.SPECIAL, 70, 100, 20, -1, 0, 8)

src/field/pokemon.ts

@@ -4,7 +4,7 @@ import { Variant, VariantSet, variantColorCache } from '#app/data/variant';
 import { variantData } from '#app/data/variant';
 import BattleInfo, { PlayerBattleInfo, EnemyBattleInfo } from '../ui/battle-info';
 import { Moves } from "../data/enums/moves";
-import Move, { HighCritAttr, HitsTagAttr, applyMoveAttrs, FixedDamageAttr, VariableAtkAttr, VariablePowerAttr, allMoves, MoveCategory, TypelessAttr, CritOnlyAttr, getMoveTargets, OneHitKOAttr, MultiHitAttr, StatusMoveTypeImmunityAttr, MoveTarget, VariableDefAttr, AttackMove, ModifiedDamageAttr, VariableMoveTypeMultiplierAttr, IgnoreOpponentStatChangesAttr, SacrificialAttr, VariableMoveTypeAttr, VariableMoveCategoryAttr } from "../data/move";
+import Move, { HighCritAttr, HitsTagAttr, applyMoveAttrs, FixedDamageAttr, VariableAtkAttr, VariablePowerAttr, allMoves, MoveCategory, TypelessAttr, CritOnlyAttr, getMoveTargets, OneHitKOAttr, MultiHitAttr, StatusMoveTypeImmunityAttr, MoveTarget, VariableDefAttr, AttackMove, ModifiedDamageAttr, VariableMoveTypeMultiplierAttr, IgnoreOpponentStatChangesAttr, SacrificialAttr, VariableMoveTypeAttr, VariableMoveCategoryAttr, ExplosiveAttr } from "../data/move";
 import { default as PokemonSpecies, PokemonSpeciesForm, SpeciesFormKey, getFusedSpeciesName, getPokemonSpecies, getPokemonSpeciesForm, starterPassiveAbilities } from '../data/pokemon-species';
 import * as Utils from '../utils';
 import { Type, TypeDamageMultiplier, getTypeDamageMultiplier, getTypeRgb } from '../data/type';
@@ -1229,6 +1229,7 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
     if (types.find(t => move.isTypeImmune(t)))
       typeMultiplier.value = 0;
 
+    applyMoveAttrs(ExplosiveAttr, source, null, battlerMove.getMove());
     switch (moveCategory) {
       case MoveCategory.PHYSICAL:
       case MoveCategory.SPECIAL: