Metronome challenge

src/data/challenge.ts

@@ -16,7 +16,7 @@ import { Challenges } from "#enums/challenges";
 import { Species } from "#enums/species";
 import { TrainerType } from "#enums/trainer-type";
 import { Nature } from "#enums/nature";
-import type { Moves } from "#enums/moves";
+import { Moves } from "#enums/moves";
 import { TypeColor, TypeShadow } from "#enums/color";
 import { pokemonEvolutions } from "#app/data/balance/pokemon-evolutions";
 import { pokemonFormChanges } from "#app/data/pokemon-forms";
@@ -93,6 +93,18 @@ export enum ChallengeType {
    * Modifies what the pokemon stats for Flip Stat Mode.
    */
   FLIP_STAT,
+  /**
+   * Modifies movesets of generated enemy mons
+   */
+  MOVESET_MODIFY,
+  /**
+   * Prevents the learning of moves
+   */
+  NO_MOVE_LEARNING,
+  /**
+   * Negates PP Usage
+   */
+  NO_PP_USE,
 }
 
 /**
@@ -433,6 +445,18 @@ export abstract class Challenge {
   applyFlipStat(_pokemon: Pokemon, _baseStats: number[]) {
     return false;
   }
+
+  applyMovesetModify(_pokemon: Pokemon) {
+    return false;
+  }
+
+  applyNoMoveLearning(_valid: Utils.BooleanHolder) {
+    return false;
+  }
+
+  applyNoPPUsage(_valid: Utils.BooleanHolder) {
+    return false;
+  }
 }
 
 type ChallengeCondition = (data: GameData) => boolean;
@@ -917,6 +941,14 @@ export class InverseBattleChallenge extends Challenge {
     return 0;
   }
 
+  override applyMovesetModify(pokemon: Pokemon): boolean {
+    if (pokemon.species.speciesId === Species.ETERNATUS) {
+      pokemon.moveset[2] = new PokemonMove(Moves.THUNDERBOLT);
+      return true;
+    }
+    return false;
+  }
+
   applyTypeEffectiveness(effectiveness: Utils.NumberHolder): boolean {
     if (effectiveness.value < 1) {
       effectiveness.value = 2;
@@ -958,6 +990,41 @@ export class FlipStatChallenge extends Challenge {
   }
 }
 
+export class MetronomeChallenge extends Challenge {
+  constructor() {
+    super(Challenges.METRONOME, 1);
+  }
+
+  override applyStarterModify(_pokemon: Pokemon): boolean {
+    return this.applyMovesetModify(_pokemon);
+  }
+
+  override applyMovesetModify(pokemon: Pokemon): boolean {
+    pokemon.setMove(0, Moves.METRONOME);
+    pokemon.setMove(1, Moves.NONE);
+    pokemon.setMove(2, Moves.NONE);
+    pokemon.setMove(3, Moves.NONE);
+    return true;
+  }
+
+  override applyNoMoveLearning(valid: Utils.BooleanHolder): boolean {
+    valid.value = true;
+    return true;
+  }
+
+  override applyNoPPUsage(valid: Utils.BooleanHolder): boolean {
+    valid.value = true;
+    return true;
+  }
+
+  static loadChallenge(source: MetronomeChallenge | any): MetronomeChallenge {
+    const newChallenge = new MetronomeChallenge();
+    newChallenge.value = source.value;
+    newChallenge.severity = source.severity;
+    return newChallenge;
+  }
+}
+
 /**
  * Lowers the amount of starter points available.
  */
@@ -1216,6 +1283,24 @@ export function applyChallenges(
   baseStats: number[],
 ): boolean;
 
+export function applyChallenges(
+  gameMode: GameMode,
+  challengeType: ChallengeType.MOVESET_MODIFY,
+  pokemon: Pokemon,
+): boolean;
+
+export function applyChallenges(
+  gameMode: GameMode,
+  challengeType: ChallengeType.NO_MOVE_LEARNING,
+  valid: Utils.BooleanHolder,
+): boolean;
+
+export function applyChallenges(
+  gameMode: GameMode,
+  challengeType: ChallengeType.NO_PP_USE,
+  valid: Utils.BooleanHolder,
+): boolean;
+
 export function applyChallenges(gameMode: GameMode, challengeType: ChallengeType, ...args: any[]): boolean {
   let ret = false;
   gameMode.challenges.forEach(c => {
@@ -1263,6 +1348,15 @@ export function applyChallenges(gameMode: GameMode, challengeType: ChallengeType
         case ChallengeType.FLIP_STAT:
           ret ||= c.applyFlipStat(args[0], args[1]);
           break;
+        case ChallengeType.MOVESET_MODIFY:
+          ret ||= c.applyMovesetModify(args[0]);
+          break;
+        case ChallengeType.NO_MOVE_LEARNING:
+          ret ||= c.applyNoMoveLearning(args[0]);
+          break;
+        case ChallengeType.NO_PP_USE:
+          ret ||= c.applyNoPPUsage(args[0]);
+          break;
       }
     }
   });
@@ -1290,6 +1384,8 @@ export function copyChallenge(source: Challenge | any): Challenge {
       return InverseBattleChallenge.loadChallenge(source);
     case Challenges.FLIP_STAT:
       return FlipStatChallenge.loadChallenge(source);
+    case Challenges.METRONOME:
+      return MetronomeChallenge.loadChallenge(source);
   }
   throw new Error("Unknown challenge copied");
 }
@@ -1303,5 +1399,6 @@ export function initChallenges() {
     new FreshStartChallenge(),
     new InverseBattleChallenge(),
     new FlipStatChallenge(),
+    new MetronomeChallenge(),
   );
 }

src/enums/challenges.ts

@@ -6,4 +6,5 @@ export enum Challenges {
     FRESH_START,
     INVERSE_BATTLE,
     FLIP_STAT,
+    METRONOME,
 }

src/field/pokemon.ts

@@ -7024,14 +7024,12 @@ export class EnemyPokemon extends Pokemon {
               new PokemonMove(Moves.FLAMETHROWER),
               new PokemonMove(Moves.COSMIC_POWER),
             ];
-        if (globalScene.gameMode.hasChallenge(Challenges.INVERSE_BATTLE)) {
-          this.moveset[2] = new PokemonMove(Moves.THUNDERBOLT);
-        }
         break;
       default:
         super.generateAndPopulateMoveset();
         break;
     }
+    applyChallenges(globalScene.gameMode, ChallengeType.MOVESET_MODIFY, this);
   }
 
   /**

src/modifier/modifier-type.ts

@@ -106,6 +106,7 @@ import type { PokemonMoveSelectFilter, PokemonSelectFilter } from "#app/ui/party
 import PartyUiHandler from "#app/ui/party-ui-handler";
 import { getModifierTierTextTint } from "#app/ui/text";
 import {
+  BooleanHolder,
   formatMoney,
   getEnumKeys,
   getEnumValues,
@@ -126,6 +127,7 @@ import type { PermanentStat, TempBattleStat } from "#enums/stat";
 import { getStatKey, Stat, TEMP_BATTLE_STATS } from "#enums/stat";
 import { StatusEffect } from "#enums/status-effect";
 import i18next from "i18next";
+import { applyChallenges, ChallengeType } from "#app/data/challenge";
 
 const outputModifierData = false;
 const useMaxWeightForOutput = false;
@@ -2028,6 +2030,8 @@ export const modifierTypes = {
       if (pregenArgs && pregenArgs.length === 1 && pregenArgs[0] in BerryType) {
         return new BerryModifierType(pregenArgs[0] as BerryType);
       }
+      const noMoveLearning = new BooleanHolder(false);
+      applyChallenges(globalScene.gameMode, ChallengeType.NO_MOVE_LEARNING, noMoveLearning); // Yeah this is kind of dumb
       const berryTypes = getEnumValues(BerryType);
       let randBerryType: BerryType;
       const rand = randSeedInt(12);
@@ -2035,7 +2039,7 @@ export const modifierTypes = {
         randBerryType = BerryType.SITRUS;
       } else if (rand < 4) {
         randBerryType = BerryType.LUM;
-      } else if (rand < 6) {
+      } else if (rand < 6 && !noMoveLearning.value) {
         randBerryType = BerryType.LEPPA;
       } else {
         randBerryType = berryTypes[randSeedInt(berryTypes.length - 3) + 2];
@@ -2464,14 +2468,30 @@ const modifierPool: ModifierPool = {
     new WeightedModifierType(modifierTypes.LURE, lureWeightFunc(10, 2)),
     new WeightedModifierType(modifierTypes.TEMP_STAT_STAGE_BOOSTER, 4),
     new WeightedModifierType(modifierTypes.BERRY, 2),
-    new WeightedModifierType(modifierTypes.TM_COMMON, 2),
+    new WeightedModifierType(
+      modifierTypes.TM_COMMON,
+      () => {
+        const noMoveLearning = new BooleanHolder(false);
+        applyChallenges(globalScene.gameMode, ChallengeType.NO_MOVE_LEARNING, noMoveLearning);
+        return noMoveLearning.value ? 0 : 2;
+      },
+      2,
+    ),
   ].map(m => {
     m.setTier(ModifierTier.COMMON);
     return m;
   }),
   [ModifierTier.GREAT]: [
     new WeightedModifierType(modifierTypes.GREAT_BALL, () => (hasMaximumBalls(PokeballType.GREAT_BALL) ? 0 : 6), 6),
-    new WeightedModifierType(modifierTypes.PP_UP, 2),
+    new WeightedModifierType(
+      modifierTypes.PP_UP,
+      () => {
+        const noMoveLearning = new BooleanHolder(false);
+        applyChallenges(globalScene.gameMode, ChallengeType.NO_PP_USE, noMoveLearning);
+        return noMoveLearning.value ? 0 : 2;
+      },
+      2,
+    ),
     new WeightedModifierType(
       modifierTypes.FULL_HEAL,
       (party: Pokemon[]) => {
@@ -2567,6 +2587,11 @@ const modifierPool: ModifierPool = {
     new WeightedModifierType(
       modifierTypes.ELIXIR,
       (party: Pokemon[]) => {
+        const noMoveLearning = new BooleanHolder(false);
+        applyChallenges(globalScene.gameMode, ChallengeType.NO_PP_USE, noMoveLearning);
+        if (noMoveLearning.value) {
+          return 0;
+        }
         const thresholdPartyMemberCount = Math.min(
           party.filter(
             p =>
@@ -2586,6 +2611,11 @@ const modifierPool: ModifierPool = {
     new WeightedModifierType(
       modifierTypes.MAX_ELIXIR,
       (party: Pokemon[]) => {
+        const noMoveLearning = new BooleanHolder(false);
+        applyChallenges(globalScene.gameMode, ChallengeType.NO_PP_USE, noMoveLearning);
+        if (noMoveLearning.value) {
+          return 0;
+        }
         const thresholdPartyMemberCount = Math.min(
           party.filter(
             p =>
@@ -2618,11 +2648,21 @@ const modifierPool: ModifierPool = {
       2,
     ),
     new WeightedModifierType(modifierTypes.SOOTHE_BELL, 2),
-    new WeightedModifierType(modifierTypes.TM_GREAT, 3),
+    new WeightedModifierType(
+      modifierTypes.TM_GREAT,
+      () => {
+        const noMoveLearning = new BooleanHolder(false);
+        applyChallenges(globalScene.gameMode, ChallengeType.NO_MOVE_LEARNING, noMoveLearning);
+        return noMoveLearning.value ? 0 : 3;
+      },
+      3,
+    ),
     new WeightedModifierType(
       modifierTypes.MEMORY_MUSHROOM,
       (party: Pokemon[]) => {
-        if (!party.find(p => p.getLearnableLevelMoves().length)) {
+        const noMoveLearning = new BooleanHolder(false);
+        applyChallenges(globalScene.gameMode, ChallengeType.NO_MOVE_LEARNING, noMoveLearning); // Yeah this is kind of dumb
+        if (noMoveLearning.value || !party.find(p => p.getLearnableLevelMoves().length)) {
           return 0;
         }
         const highestPartyLevel = party
@@ -2668,7 +2708,15 @@ const modifierPool: ModifierPool = {
     new WeightedModifierType(modifierTypes.ULTRA_BALL, () => (hasMaximumBalls(PokeballType.ULTRA_BALL) ? 0 : 15), 15),
     new WeightedModifierType(modifierTypes.MAX_LURE, lureWeightFunc(30, 4)),
     new WeightedModifierType(modifierTypes.BIG_NUGGET, skipInLastClassicWaveOrDefault(12)),
-    new WeightedModifierType(modifierTypes.PP_MAX, 3),
+    new WeightedModifierType(
+      modifierTypes.PP_MAX,
+      () => {
+        const noMoveLearning = new BooleanHolder(false);
+        applyChallenges(globalScene.gameMode, ChallengeType.NO_PP_USE, noMoveLearning); // Yeah this is kind of dumb
+        return noMoveLearning.value ? 0 : 3;
+      },
+      3,
+    ),
     new WeightedModifierType(modifierTypes.MINT, 4),
     new WeightedModifierType(
       modifierTypes.RARE_EVOLUTION_ITEM,
@@ -2813,7 +2861,15 @@ const modifierPool: ModifierPool = {
     new WeightedModifierType(modifierTypes.REVIVER_SEED, 4),
     new WeightedModifierType(modifierTypes.CANDY_JAR, skipInLastClassicWaveOrDefault(5)),
     new WeightedModifierType(modifierTypes.ATTACK_TYPE_BOOSTER, 9),
-    new WeightedModifierType(modifierTypes.TM_ULTRA, 11),
+    new WeightedModifierType(
+      modifierTypes.TM_ULTRA,
+      () => {
+        const noMoveLearning = new BooleanHolder(false);
+        applyChallenges(globalScene.gameMode, ChallengeType.NO_MOVE_LEARNING, noMoveLearning); // Yeah this is kind of dumb
+        return noMoveLearning.value ? 0 : 11;
+      },
+      11,
+    ),
     new WeightedModifierType(modifierTypes.RARER_CANDY, 4),
     new WeightedModifierType(modifierTypes.GOLDEN_PUNCH, skipInLastClassicWaveOrDefault(2)),
     new WeightedModifierType(modifierTypes.IV_SCANNER, skipInLastClassicWaveOrDefault(4)),

src/phases/evolution-phase.ts

@@ -17,6 +17,8 @@ import { getPokemonNameWithAffix } from "#app/messages";
 import { LearnMovePhase } from "#app/phases/learn-move-phase";
 import { EndEvolutionPhase } from "#app/phases/end-evolution-phase";
 import { EVOLVE_MOVE } from "#app/data/balance/pokemon-level-moves";
+import { BooleanHolder } from "#app/utils";
+import { applyChallenges, ChallengeType } from "#app/data/challenge";
 
 export class EvolutionPhase extends Phase {
   protected pokemon: PlayerPokemon;
@@ -343,6 +345,9 @@ export class EvolutionPhase extends Phase {
       this.evolutionHandler.canCancel = false;
 
       this.pokemon.evolve(this.evolution, this.pokemon.species).then(() => {
+        const skipMoveLearn = new BooleanHolder(false);
+        applyChallenges(globalScene.gameMode, ChallengeType.NO_MOVE_LEARNING, skipMoveLearn);
+        if (!skipMoveLearn.value) {
           const learnSituation: LearnMoveSituation = this.fusionSpeciesEvolved
             ? LearnMoveSituation.EVOLUTION_FUSED
             : this.pokemon.fusionSpecies
@@ -354,6 +359,7 @@ export class EvolutionPhase extends Phase {
           for (const lm of levelMoves) {
             globalScene.unshiftPhase(new LearnMovePhase(globalScene.getPlayerParty().indexOf(this.pokemon), lm[1]));
           }
+        }
         globalScene.unshiftPhase(new EndEvolutionPhase());
 
         globalScene.playSound("se/shine");

src/phases/level-up-phase.ts

@@ -6,8 +6,9 @@ import { EvolutionPhase } from "#app/phases/evolution-phase";
 import { LearnMovePhase } from "#app/phases/learn-move-phase";
 import { PlayerPartyMemberPokemonPhase } from "#app/phases/player-party-member-pokemon-phase";
 import { LevelAchv } from "#app/system/achv";
-import { NumberHolder } from "#app/utils";
+import { BooleanHolder, NumberHolder } from "#app/utils";
 import i18next from "i18next";
+import { applyChallenges, ChallengeType } from "#app/data/challenge";
 
 export class LevelUpPhase extends PlayerPartyMemberPokemonPhase {
   protected lastLevel: number;
@@ -63,11 +64,15 @@ export class LevelUpPhase extends PlayerPartyMemberPokemonPhase {
   public override end() {
     if (this.lastLevel < 100) {
       // this feels like an unnecessary optimization
+      const skipMoveLearn = new BooleanHolder(false);
+      applyChallenges(globalScene.gameMode, ChallengeType.NO_MOVE_LEARNING, skipMoveLearn);
+      if (!skipMoveLearn.value) {
         const levelMoves = this.getPokemon().getLevelMoves(this.lastLevel + 1);
         for (const lm of levelMoves) {
           globalScene.unshiftPhase(new LearnMovePhase(this.partyMemberIndex, lm[1]));
         }
       }
+    }
     if (!this.pokemon.pauseEvolutions) {
       const evolution = this.pokemon.getEvolution();
       if (evolution) {

src/phases/move-phase.ts

@@ -43,13 +43,14 @@ import { MoveChargePhase } from "#app/phases/move-charge-phase";
 import { MoveEffectPhase } from "#app/phases/move-effect-phase";
 import { MoveEndPhase } from "#app/phases/move-end-phase";
 import { ShowAbilityPhase } from "#app/phases/show-ability-phase";
-import { NumberHolder } from "#app/utils";
+import { BooleanHolder, NumberHolder } from "#app/utils";
 import { Abilities } from "#enums/abilities";
 import { ArenaTagType } from "#enums/arena-tag-type";
 import { BattlerTagType } from "#enums/battler-tag-type";
 import { Moves } from "#enums/moves";
 import { StatusEffect } from "#enums/status-effect";
 import i18next from "i18next";
+import { applyChallenges, ChallengeType } from "#app/data/challenge";
 
 export class MovePhase extends BattlePhase {
   protected _pokemon: Pokemon;
@@ -104,11 +105,14 @@ export class MovePhase extends BattlePhase {
   ) {
     super();
 
+    const ignorePPChallenge = new BooleanHolder(ignorePp);
+    applyChallenges(globalScene.gameMode, ChallengeType.NO_PP_USE, ignorePPChallenge);
+
     this.pokemon = pokemon;
     this.targets = targets;
     this.move = move;
     this.followUp = followUp;
-    this.ignorePp = ignorePp;
+    this.ignorePp = ignorePPChallenge.value;
     this.reflected = reflected;
     this.forcedLast = forcedLast;
   }