update challenge type to ARENA_TAG from TRICK_ROOM

src/data/challenge.ts

@@ -15,6 +15,9 @@ import { Moves } from "#app/enums/moves";
 import { TypeColor, TypeShadow } from "#app/enums/color";
 import { pokemonEvolutions } from "./pokemon-evolutions";
 import { pokemonFormChanges } from "./pokemon-forms";
+import { Arena } from "#app/field/arena";
+import { ArenaTagType } from "#enums/arena-tag-type";
+import { ArenaTagSide } from "./arena-tag";
 
 /** A constant for the default max cost of the starting party before a run */
 const DEFAULT_PARTY_MAX_COST = 10;
@@ -60,10 +63,10 @@ export enum ChallengeType {
   */
   TYPE_EFFECTIVENESS,
   /**
-   * Challenge that enables Trick Room in a run
-   * @see {@link https://bulbapedia.bulbagarden.net/wiki/Trick_Room_(move)}
+   * Modifies the Arena Tags when a encounter starts
+   * @see {@linkcode Challenge.applyArenaTag}
    */
-  TRICK_ROOM,
+  ARENA_TAG,
   /**
    * Modifies what level the AI pokemon are. UNIMPLEMENTED.
    */
@@ -342,11 +345,14 @@ export abstract class Challenge {
   }
 
   /**
-   * An apply function for TRICK_ROOM challenges. Derived classes should alter this.
-   * @param isTrickRoom {@link Utils.BooleanHolder} Whether the battle is under the effect of Trick Room.
-   * @returns `true` if this function did anything.
+   * An apply function for ARENA_TAG challenges. Derived classes should alter this.
+   * @param arena {@link Arena} The arena to apply the tag to.
+   * @param arenaTag {@link ArenaTagType} The arena tag to apply.
+   * @param turnCount {@link Number} The amount of turns the tag should last.
+   * @param side {@link ArenaTagSide} The side to apply the tag to. (optional)
+   * @returns {@link boolean} Whether this function did anything.
    */
-  applyTrickRoom(isTrickRoom: Utils.BooleanHolder): boolean {
+  applyArenaTag(arena: Arena, arenaTag: ArenaTagType, turnCount: Number, side?: ArenaTagSide): boolean {
     return false;
   }
 
@@ -727,16 +733,22 @@ export class TrickRoomChallenge extends Challenge {
     newChallenge.severity = source.severity;
     return newChallenge;
   }
-
   /**
    * @override
-   * this challenge inverts whether the battle is under the effect of Trick Room.
-   * @param isTrickRoom {@link Utils.BooleanHolder} Whether the battle is under the effect of Trick Room.
+   * this challenge enables Trick Room arena tag when encounter starts
+   * @see {@link https://bulbapedia.bulbagarden.net/wiki/Trick_Room_(move)}
+   *
+   * @param arena {@link Arena} The arena to apply the tag to.
+   * @param arenaTag {@link ArenaTagType} The arena tag to apply.
+   * @param turnCount {@link Number} The amount of turns the tag should last.
    * @returns `true` if any challenge was successfully applied.
    */
-  override applyTrickRoom(isTrickRoom: Utils.BooleanHolder): boolean {
-    isTrickRoom.value = !isTrickRoom.value;
-    return true;
+  override applyArenaTag(arena: Arena, arenaTag: ArenaTagType, turnCount: Number): boolean {
+    if (arenaTag === ArenaTagType.TRICK_ROOM) {
+      arena.addTag(ArenaTagType.TRICK_ROOM, turnCount.valueOf(), undefined, -1);
+      return true;
+    }
+    return false;
   }
 }
 
@@ -868,13 +880,16 @@ export function applyChallenges(gameMode: GameMode, challengeType: ChallengeType
  */
 export function applyChallenges(gameMode: GameMode, challengeType: ChallengeType.TYPE_EFFECTIVENESS, effectiveness: Utils.NumberHolder): boolean;
 /**
- * Apply all challenges that modify Trick Room.
+ * Apply all challenges that modify an arena tag when a encounter starts.
  * @param gameMode The current {@linkcode GameMode}
- * @param challengeType {@linkcode ChallengeType.TRICK_ROOM}
- * @param isTrickRoom {@linkcode Utils.BooleanHolder} Whether the battle is under the effect of Trick Room.
+ * @param challengeType {@linkcode ChallengeType.ARENA_TAG}
+ * @param arena {@linkcode Arena} The arena to apply the tag to.
+ * @param arenaTag {@linkcode ArenaTagType} The arena tag to apply.
+ * @param turnCount {@linkcode Number} The amount of turns the tag should last.
+ * @param side {@linkcode ArenaTagSide} The side to apply the tag to. (optional)
  * @returns `true` if any challenge was successfully applied.
  */
-export function applyChallenges(gameMode: GameMode, challengeType: ChallengeType.TRICK_ROOM, isTrickRoom: Utils.BooleanHolder): boolean;
+export function applyChallenges(gameMode: GameMode, challengeType: ChallengeType.ARENA_TAG, arena: Arena, arenaTag: ArenaTagType, turnCount: Number, side?: ArenaTagSide): boolean;
 /**
  * Apply all challenges that modify what level AI are.
  * @param gameMode {@link GameMode} The current gameMode
@@ -959,8 +974,8 @@ export function applyChallenges(gameMode: GameMode, challengeType: ChallengeType
       case ChallengeType.TYPE_EFFECTIVENESS:
         ret ||= c.applyTypeEffectiveness(args[0]);
         break;
-      case ChallengeType.TRICK_ROOM:
-        ret ||= c.applyTrickRoom(args[0]);
+      case ChallengeType.ARENA_TAG:
+        ret ||= c.applyArenaTag(args[0], args[1], args[2], args[3]);
         break;
       case ChallengeType.AI_LEVEL:
         ret ||= c.applyLevelChange(args[0], args[1], args[2], args[3]);

src/phases/encounter-phase.ts

@@ -34,6 +34,8 @@ import { doTrainerExclamation } from "#app/data/mystery-encounters/utils/encount
 import { getEncounterText } from "#app/data/mystery-encounters/utils/encounter-dialogue-utils";
 import { MysteryEncounterPhase } from "#app/phases/mystery-encounter-phases";
 import { getGoldenBugNetSpecies } from "#app/data/mystery-encounters/utils/encounter-pokemon-utils";
+import { applyChallenges, ChallengeType } from "#app/data/challenge";
+import { ArenaTagType } from "#app/enums/arena-tag-type";
 
 export class EncounterPhase extends BattlePhase {
   private loaded: boolean;
@@ -421,6 +423,7 @@ export class EncounterPhase extends BattlePhase {
         });
       }
     }
+    applyChallenges(this.scene.gameMode, ChallengeType.ARENA_TAG, this.scene.arena, ArenaTagType.TRICK_ROOM, Number.POSITIVE_INFINITY);
   }
 
   end() {