Fixes some variable damage moves not working with tinted lens (#759)

* Fixes some variable damage moves not working with abilities

* Rework as new ability attribute

* Update variable base power check to original location

* formatting

* Add tsdoc comments

* add floor for potential non int multipliers

* Update pokemon.ts

---------

Co-authored-by: Benjamin Odom <bennybroseph@gmail.com>

src/data/ability.ts

@@ -991,6 +991,42 @@ export class MoveTypeChangeAttr extends PreAttackAbAttr {
   }
 }
 
+/**
+ * Class for abilities that boost the damage of moves
+ * For abilities that boost the base power of moves, see VariableMovePowerAbAttr
+ * @param damageMultiplier the amount to multiply the damage by 
+ * @param condition the condition for this ability to be applied 
+ */
+export class DamageBoostAbAttr extends PreAttackAbAttr {
+  private damageMultiplier: number;
+  private condition: PokemonAttackCondition;
+
+  constructor(damageMultiplier: number, condition: PokemonAttackCondition){
+    super(true);
+    this.damageMultiplier = damageMultiplier;
+    this.condition = condition;
+  }
+
+  /**
+   * 
+   * @param pokemon the attacker pokemon
+   * @param passive N/A
+   * @param defender the target pokemon
+   * @param move the move used by the attacker pokemon
+   * @param args Utils.NumberHolder as damage
+   * @returns true if the function succeeds
+   */
+  applyPreAttack(pokemon: Pokemon, passive: boolean, defender: Pokemon, move: PokemonMove, args: any[]): boolean {
+    if (this.condition(pokemon, defender, move.getMove())) {
+      const power = args[0] as Utils.NumberHolder;
+      power.value = Math.floor(power.value * this.damageMultiplier);
+        return true;
+      }
+
+      return false;
+  }
+}
+
 export class MovePowerBoostAbAttr extends VariableMovePowerAbAttr {
   private condition: PokemonAttackCondition;
   private powerMultiplier: number;
@@ -3121,7 +3157,7 @@ export function initAbilities() {
       .attr(IgnoreOpponentStatChangesAbAttr)
       .ignorable(),
     new Ability(Abilities.TINTED_LENS, 4)
-      .attr(MovePowerBoostAbAttr, (user, target, move) => target.getAttackTypeEffectiveness(move.type, user) <= 0.5, 2),
+      .attr(DamageBoostAbAttr, 2, (user, target, move) => target.getAttackTypeEffectiveness(move.type, user) <= 0.5),
     new Ability(Abilities.FILTER, 4)
       .attr(ReceivedMoveDamageMultiplierAbAttr,(target, user, move) => target.getAttackTypeEffectiveness(move.type, user) >= 2, 0.75)
       .ignorable(),

src/field/pokemon.ts

@@ -27,7 +27,7 @@ import { TempBattleStat } from '../data/temp-battle-stat';
 import { ArenaTagSide, WeakenMoveScreenTag, WeakenMoveTypeTag } from '../data/arena-tag';
 import { ArenaTagType } from "../data/enums/arena-tag-type";
 import { Biome } from "../data/enums/biome";
-import { Ability, AbAttr, BattleStatMultiplierAbAttr, BlockCritAbAttr, BonusCritAbAttr, BypassBurnDamageReductionAbAttr, FieldPriorityMoveImmunityAbAttr, FieldVariableMovePowerAbAttr, IgnoreOpponentStatChangesAbAttr, MoveImmunityAbAttr, MoveTypeChangeAttr, NonSuperEffectiveImmunityAbAttr, PreApplyBattlerTagAbAttr, PreDefendFullHpEndureAbAttr, ReceivedMoveDamageMultiplierAbAttr, ReduceStatusEffectDurationAbAttr, StabBoostAbAttr, StatusEffectImmunityAbAttr, TypeImmunityAbAttr, VariableMovePowerAbAttr, VariableMoveTypeAbAttr, WeightMultiplierAbAttr, allAbilities, applyAbAttrs, applyBattleStatMultiplierAbAttrs, applyPostDefendAbAttrs, applyPreApplyBattlerTagAbAttrs, applyPreAttackAbAttrs, applyPreDefendAbAttrs, applyPreSetStatusAbAttrs, UnsuppressableAbilityAbAttr, SuppressFieldAbilitiesAbAttr, NoFusionAbilityAbAttr, MultCritAbAttr, IgnoreTypeImmunityAbAttr } from '../data/ability';
+import { Ability, AbAttr, BattleStatMultiplierAbAttr, BlockCritAbAttr, BonusCritAbAttr, BypassBurnDamageReductionAbAttr, FieldPriorityMoveImmunityAbAttr, FieldVariableMovePowerAbAttr, IgnoreOpponentStatChangesAbAttr, MoveImmunityAbAttr, MoveTypeChangeAttr, NonSuperEffectiveImmunityAbAttr, PreApplyBattlerTagAbAttr, PreDefendFullHpEndureAbAttr, ReceivedMoveDamageMultiplierAbAttr, ReduceStatusEffectDurationAbAttr, StabBoostAbAttr, StatusEffectImmunityAbAttr, TypeImmunityAbAttr, VariableMovePowerAbAttr, VariableMoveTypeAbAttr, WeightMultiplierAbAttr, allAbilities, applyAbAttrs, applyBattleStatMultiplierAbAttrs, applyPostDefendAbAttrs, applyPreApplyBattlerTagAbAttrs, applyPreAttackAbAttrs, applyPreDefendAbAttrs, applyPreSetStatusAbAttrs, UnsuppressableAbilityAbAttr, SuppressFieldAbilitiesAbAttr, NoFusionAbilityAbAttr, MultCritAbAttr, IgnoreTypeImmunityAbAttr, DamageBoostAbAttr } from '../data/ability';
 import { Abilities } from "#app/data/enums/abilities";
 import PokemonData from '../system/pokemon-data';
 import Battle, { BattlerIndex } from '../battle';
@@ -1545,6 +1545,9 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
               if (!burnDamageReductionCancelled.value)
                 damage.value = Math.floor(damage.value / 2);
             }
+
+            applyPreAttackAbAttrs(DamageBoostAbAttr, source, this, battlerMove, damage);
+
             move.getAttrs(HitsTagAttr).map(hta => hta as HitsTagAttr).filter(hta => hta.doubleDamage).forEach(hta => {
               if (this.getTag(hta.tagType))
                 damage.value *= 2;