Applied review suggestions and added a _wee_ bit more docs

src/data/moves/move.ts

@@ -3173,7 +3173,7 @@ export class DelayedAttackAttr extends OverrideMoveEffectAttr {
 
   apply(user: Pokemon, target: Pokemon, move: Move, args: [overridden: BooleanHolder, useMode: MoveUseMode]): boolean {
     const useMode = args[1];
-    if (useMode === MoveUseMode.TRANSPARENT) {
+    if (useMode === MoveUseMode.DELAYED_ATTACK) {
       // don't trigger if already queueing an indirect attack
       return false;
     }

src/data/positional-tags/load-positional-tag.ts

@@ -1,10 +1,10 @@
 import { DelayedAttackTag, type PositionalTag, WishTag } from "#data/positional-tags/positional-tag";
 import { PositionalTagType } from "#enums/positional-tag-type";
-import type { EnumValues } from "#types/enum-types";
+import type { ObjectValues } from "#types/type-helpers";
 import type { Constructor } from "#utils/common";
 
 /**
- * Add a new {@linkcode PositionalTag} to the arena.
+ * Load the attributes of a {@linkcode PositionalTag}.
  * @param tagType - The {@linkcode PositionalTagType} to create
  * @param args - The arguments needed to instantize the given tag
  * @returns The newly created tag.
@@ -16,7 +16,7 @@ export function loadPositionalTag<T extends PositionalTagType>({
   ...args
 }: serializedPosTagMap[T]): posTagInstanceMap[T];
 /**
- * Add a new {@linkcode PositionalTag} to the arena.
+ * Load the attributes of a {@linkcode PositionalTag}.
  * @param tag - The {@linkcode SerializedPositionalTag} to instantiate
  * @returns The newly created tag.
  * @remarks
@@ -67,4 +67,4 @@ export type serializedPosTagMap = {
 };
 
 /** Union type containing all serialized {@linkcode PositionalTag}s. */
-export type SerializedPositionalTag = EnumValues<serializedPosTagMap>;
+export type SerializedPositionalTag = ObjectValues<serializedPosTagMap>;

src/data/positional-tags/positional-tag-manager.ts

@@ -7,7 +7,8 @@ import type { PositionalTagType } from "#enums/positional-tag-type";
 export class PositionalTagManager {
   /**
    * Array containing all pending unactivated {@linkcode PositionalTag}s,
-   * sorted by order of creation (oldest first). */
+   * sorted by order of creation (oldest first).
+   */
   public tags: PositionalTag[] = [];
 
   /**
@@ -30,12 +31,12 @@ export class PositionalTagManager {
   }
 
   /**
-   * Decrement turn counts of and activate all pending {@linkcode PositionalTag}s on field.
+   * Decrement turn counts of and trigger all pending {@linkcode PositionalTag}s on field.
    * @remarks
-   * If multiple tags trigger simultaneously, they will activate **in order of initial creation**, regardless of speed order.
+   * If multiple tags trigger simultaneously, they will activate in order of **initial creation**, regardless of current speed order.
    * (Source: [Smogon](<https://www.smogon.com/forums/threads/sword-shield-battle-mechanics-research.3655528/page-64#post-9244179>))
    */
-  public triggerAllTags(): void {
+  public activateAllTags(): void {
     const leftoverTags: PositionalTag[] = [];
     for (const tag of this.tags) {
       // Check for silent removal, immediately removing invalid tags.
@@ -45,7 +46,7 @@ export class PositionalTagManager {
         continue;
       }
 
-      if (!tag.shouldDisappear()) {
+      if (tag.shouldTrigger()) {
         tag.trigger();
       }
     }

src/data/positional-tags/positional-tag.ts

@@ -14,19 +14,21 @@ import i18next from "i18next";
 /**
  * Baseline arguments used to construct all {@linkcode PositionalTag}s,
  * the contents of which are serialized and used to construct new tags. \
- * Does not contain the `tagType` parameter (which is used to select the proper class constructor to use).
+ * Does not contain the `tagType` parameter (which is used to select the proper class constructor during tag loading).
+ * @privateRemarks
+ * All {@linkcode PositionalTag}s are intended to implement a sub-interface of this containing their respective parameters,
+ * and should refrain from adding extra serializable fields not contained in said interface.
+ * This ensures that all tags truly "become" their respective interfaces when converted to and from JSON.
  */
 export interface PositionalTagBaseArgs {
   /**
-   * The number of turns remaining until activation. \
+   * The number of turns remaining until this tag's activation. \
-   * Decremented by 1 at the end of each turn until reaching 0, at which point it will {@linkcode trigger} and be removed.
+   * Decremented by 1 at the end of each turn until reaching 0, at which point it will
-   * @remarks
+   * {@linkcode PositionalTag.trigger | trigger} the tag's effects and be removed.
-   * If this is set to any number `<0` manually (such as through the effects of {@linkcode PositionalTag.shouldDisappear | shouldDisappear}),
-   * this tag will be silently removed at the end of the next turn _without activating any effects_.
    */
   turnCount: number;
   /**
-   * The {@linkcode BattlerIndex} of the Pokemon targeted by the effect.
+   * The {@linkcode BattlerIndex} targeted by this effect.
    */
   targetIndex: BattlerIndex;
 }
@@ -37,8 +39,10 @@ export interface PositionalTagBaseArgs {
  * Multiple tags of the same kind can stack with one another, provided they are affecting different targets.
  */
 export abstract class PositionalTag implements PositionalTagBaseArgs {
+  /** This tag's {@linkcode PositionalTagType | type} */
   public abstract readonly tagType: PositionalTagType;
   // These arguments have to be public to implement the interface, but are functionally private.
+  // Left undocumented to inherit doc comments from the interface
   public turnCount: number;
   public targetIndex: BattlerIndex;
 
@@ -51,16 +55,22 @@ export abstract class PositionalTag implements PositionalTagBaseArgs {
   public abstract trigger(): void;
 
   /**
-   * Check whether this tag should be removed without calling {@linkcode trigger} and triggering effects.
+   * Check whether this tag should be allowed to {@linkcode trigger} and activate its effects
-   * @returns Whether this tag should disappear without triggering.
+   * upon its duration elapsing.
+   * @returns Whether this tag should be allowed to trigger prior to being removed.
    */
-  abstract shouldDisappear(): boolean;
+  public abstract shouldTrigger(): boolean;
 
+  /**
+   * Get the {@linkcode Pokemon} currently targeted by this tag.
+   * @returns The {@linkcode Pokemon} located in this tag's target position, or `undefined` if none exist in it.
+   */
   protected getTarget(): Pokemon | undefined {
     return globalScene.getField()[this.targetIndex];
   }
 }
 
+/** Interface containing additional properties used to construct a {@linkcode DelayedAttackTag}. */
 interface DelayedAttackArgs extends PositionalTagBaseArgs {
   /**
    * The {@linkcode Pokemon.id | PID} of the {@linkcode Pokemon} having created this effect.
@@ -87,7 +97,8 @@ export class DelayedAttackTag extends PositionalTag implements DelayedAttackArgs
   }
 
   override trigger(): void {
-    // Bangs are justified as the `shouldDisappear` method will queue the tag for removal if the source or target leave the field
+    // Bangs are justified as the `shouldTrigger` method will queue the tag for removal
+    // if the source or target no longer exist
     const source = globalScene.getPokemonById(this.sourceId)!;
     const target = this.getTarget()!;
 
@@ -104,19 +115,21 @@ export class DelayedAttackTag extends PositionalTag implements DelayedAttackArgs
       this.sourceId, // TODO: Find an alternate method of passing the source pokemon without a source ID
       [this.targetIndex],
       allMoves[this.sourceMove],
-      MoveUseMode.TRANSPARENT,
+      MoveUseMode.DELAYED_ATTACK,
     );
   }
 
-  override shouldDisappear(): boolean {
+  override shouldTrigger(): boolean {
     const source = globalScene.getPokemonById(this.sourceId);
     const target = this.getTarget();
     // Silently disappear if either source or target are missing or happen to be the same pokemon
     // (i.e. targeting oneself)
-    return !source || !target || source === target || target.isFainted();
+    // We also need to check for fainted targets as they don't technically leave the field until _after_ the turn ends
+    return !!source && !!target && source !== target && !target.isFainted();
   }
 }
 
+/** Interface containing arguments used to construct a {@linkcode WishTag}. */
 interface WishArgs extends PositionalTagBaseArgs {
   /** The amount of {@linkcode Stat.HP | HP} to heal; set to 50% of the user's max HP during move usage. */
   healHp: number;
@@ -150,7 +163,7 @@ export class WishTag extends PositionalTag implements WishArgs {
     globalScene.phaseManager.unshiftNew("PokemonHealPhase", this.targetIndex, this.healHp, null, true, false);
   }
 
-  public shouldDisappear(): boolean {
+  public shouldTrigger(): boolean {
     // Disappear if no target or target is fainted.
     // The source need not exist at the time of activation (since all we need is a simple message)
     // TODO: Verify whether Wish shows a message if the Pokemon it would affect is KO'd on the turn of activation

src/enums/move-use-mode.ts

@@ -1,7 +1,7 @@
 import type { PostDancingMoveAbAttr } from "#abilities/ability";
 import type { DelayedAttackAttr } from "#app/@types/move-types";
 import type { BattlerTagLapseType } from "#enums/battler-tag-lapse-type";
-import type { EnumValues } from "#types/enum-types";
+import type { ObjectValues } from "#types/type-helpers";
 
 /**
  * Enum representing all the possible means through which a given move can be executed.
@@ -68,11 +68,13 @@ export const MoveUseMode = {
    *
    * In addition to inheriting the cancellation ignores and copy prevention from {@linkcode MoveUseMode.REFLECTED},
    * transparent moves are ignored by **all forms of move usage checks** due to **not pushing to move history**.
+   * @todo Consider other means of implementing FS/DD than this - we currently only use it
+   * to prevent pushing to move history and avoid re-delaying the attack portion
    */
-  TRANSPARENT: 6
+  DELAYED_ATTACK: 6
 } as const;
 
-export type MoveUseMode = EnumValues<typeof MoveUseMode>;
+export type MoveUseMode = ObjectValues<typeof MoveUseMode>;
 
 // # HELPER FUNCTIONS
 // Please update the markdown tables if any new `MoveUseMode`s get added.
@@ -84,13 +86,14 @@ export type MoveUseMode = EnumValues<typeof MoveUseMode>;
  * @remarks
  * This function is equivalent to the following truth table:
  *
- * | Use Type                           | Returns |
+ * | Use Type                               | Returns |
- * |------------------------------------|---------|
+ * |----------------------------------------|---------|
- * | {@linkcode MoveUseMode.NORMAL}     | `false` |
+ * | {@linkcode MoveUseMode.NORMAL}         | `false` |
- * | {@linkcode MoveUseMode.IGNORE_PP}  | `false` |
+ * | {@linkcode MoveUseMode.IGNORE_PP}      | `false` |
- * | {@linkcode MoveUseMode.INDIRECT}   | `true`  |
+ * | {@linkcode MoveUseMode.INDIRECT}       | `true`  |
- * | {@linkcode MoveUseMode.FOLLOW_UP}  | `true`  |
+ * | {@linkcode MoveUseMode.FOLLOW_UP}      | `true`  |
- * | {@linkcode MoveUseMode.REFLECTED}  | `true`  |
+ * | {@linkcode MoveUseMode.REFLECTED}      | `true`  |
+ * | {@linkcode MoveUseMode.DELAYED_ATTACK} | `true`  |
  */
 export function isVirtual(useMode: MoveUseMode): boolean {
   return useMode >= MoveUseMode.INDIRECT
@@ -104,13 +107,14 @@ export function isVirtual(useMode: MoveUseMode): boolean {
  * @remarks
  * This function is equivalent to the following truth table:
  *
- * | Use Type                           | Returns |
+ * | Use Type                               | Returns |
- * |------------------------------------|---------|
+ * |----------------------------------------|---------|
- * | {@linkcode MoveUseMode.NORMAL}     | `false` |
+ * | {@linkcode MoveUseMode.NORMAL}         | `false` |
- * | {@linkcode MoveUseMode.IGNORE_PP}  | `false` |
+ * | {@linkcode MoveUseMode.IGNORE_PP}      | `false` |
- * | {@linkcode MoveUseMode.INDIRECT}   | `false` |
+ * | {@linkcode MoveUseMode.INDIRECT}       | `false` |
- * | {@linkcode MoveUseMode.FOLLOW_UP}  | `true`  |
+ * | {@linkcode MoveUseMode.FOLLOW_UP}      | `true`  |
- * | {@linkcode MoveUseMode.REFLECTED}  | `true`  |
+ * | {@linkcode MoveUseMode.REFLECTED}      | `true`  |
+ * | {@linkcode MoveUseMode.DELAYED_ATTACK} | `true`  |
  */
 export function isIgnoreStatus(useMode: MoveUseMode): boolean {
   return useMode >= MoveUseMode.FOLLOW_UP;
@@ -124,13 +128,14 @@ export function isIgnoreStatus(useMode: MoveUseMode): boolean {
  * @remarks
  * This function is equivalent to the following truth table:
  *
- * | Use Type                           | Returns |
+ * | Use Type                               | Returns |
- * |------------------------------------|---------|
+ * |----------------------------------------|---------|
- * | {@linkcode MoveUseMode.NORMAL}     | `false` |
+ * | {@linkcode MoveUseMode.NORMAL}         | `false` |
- * | {@linkcode MoveUseMode.IGNORE_PP}  | `true`  |
+ * | {@linkcode MoveUseMode.IGNORE_PP}      | `true`  |
- * | {@linkcode MoveUseMode.INDIRECT}   | `true`  |
+ * | {@linkcode MoveUseMode.INDIRECT}       | `true`  |
- * | {@linkcode MoveUseMode.FOLLOW_UP}  | `true`  |
+ * | {@linkcode MoveUseMode.FOLLOW_UP}      | `true`  |
- * | {@linkcode MoveUseMode.REFLECTED}  | `true`  |
+ * | {@linkcode MoveUseMode.REFLECTED}      | `true`  |
+ * | {@linkcode MoveUseMode.DELAYED_ATTACK} | `true`  |
  */
 export function isIgnorePP(useMode: MoveUseMode): boolean {
   return useMode >= MoveUseMode.IGNORE_PP;
@@ -145,14 +150,15 @@ export function isIgnorePP(useMode: MoveUseMode): boolean {
  * @remarks
  * This function is equivalent to the following truth table:
  *
- * | Use Type                           | Returns |
+ * | Use Type                               | Returns |
- * |------------------------------------|---------|
+ * |----------------------------------------|---------|
- * | {@linkcode MoveUseMode.NORMAL}     | `false` |
+ * | {@linkcode MoveUseMode.NORMAL}         | `false` |
- * | {@linkcode MoveUseMode.IGNORE_PP}  | `false` |
+ * | {@linkcode MoveUseMode.IGNORE_PP}      | `false` |
- * | {@linkcode MoveUseMode.INDIRECT}   | `false` |
+ * | {@linkcode MoveUseMode.INDIRECT}       | `false` |
- * | {@linkcode MoveUseMode.FOLLOW_UP}  | `false` |
+ * | {@linkcode MoveUseMode.FOLLOW_UP}      | `false` |
- * | {@linkcode MoveUseMode.REFLECTED}  | `true`  |
+ * | {@linkcode MoveUseMode.REFLECTED}      | `true`  |
+ * | {@linkcode MoveUseMode.DELAYED_ATTACK} | `false` |
  */
 export function isReflected(useMode: MoveUseMode): boolean {
   return useMode === MoveUseMode.REFLECTED;
-}
+}

src/field/arena.ts

@@ -52,7 +52,7 @@ export class Arena {
   public bgm: string;
   public ignoreAbilities: boolean;
   public ignoringEffectSource: BattlerIndex | null;
-  public playerTerasUsed = 0;
+  public playerTerasUsed: number;
   /**
    * Saves the number of times a party pokemon faints during a arena encounter.
    * {@linkcode globalScene.currentBattle.enemyFaints} is the corresponding faint counter for the enemy (this resets every wave).
@@ -71,6 +71,7 @@ export class Arena {
     this.bgm = bgm;
     this.trainerPool = biomeTrainerPools[biome];
     this.updatePoolsForTimeOfDay();
+    this.playerTerasUsed = 0;
     this.playerFaints = playerFaints;
   }
 

src/phases/move-effect-phase.ts

@@ -331,7 +331,7 @@ export class MoveEffectPhase extends PokemonPhase {
    */
   private postAnimCallback(user: Pokemon, targets: Pokemon[]) {
     // Add to the move history entry
-    if (this.firstHit && this.useMode !== MoveUseMode.TRANSPARENT) {
+    if (this.firstHit && this.useMode !== MoveUseMode.DELAYED_ATTACK) {
       user.pushMoveHistory(this.moveHistoryEntry);
       applyAbAttrs("ExecutedMoveAbAttr", { pokemon: user });
     }

src/phases/positional-tag-phase.ts

@@ -13,7 +13,7 @@ export class PositionalTagPhase extends Phase {
   public readonly phaseName = "PositionalTagPhase";
 
   public override start(): void {
-    globalScene.arena.positionalTagManager.triggerAllTags();
+    globalScene.arena.positionalTagManager.activateAllTags();
     super.end();
     return;
   }