Implement Prankster ability

src/data/ability.ts

@@ -914,6 +914,24 @@ export class BlockOneHitKOAbAttr extends AbAttr {
   }
 }
 
+export class IncrementMovePriorityAbAttr extends AbAttr {
+  private moveIncrementFunc: (move: Move) => boolean;
+
+  constructor(moveIncrementFunc: (move: Move) => boolean) {
+    super(true);
+
+    this.moveIncrementFunc = moveIncrementFunc;
+  }
+
+  apply(pokemon: Pokemon, cancelled: Utils.BooleanHolder, args: any[]): boolean {
+    if (!this.moveIncrementFunc(args[0] as Move))
+      return false;
+      
+    (args[0] as Utils.IntegerHolder).value++;
+    return true;
+  }
+}
+
 export class IgnoreContactAbAttr extends AbAttr { }
 
 export class PreWeatherEffectAbAttr extends AbAttr {
@@ -2192,7 +2210,8 @@ export function initAbilities() {
     new Ability(Abilities.SAP_SIPPER, "Sap Sipper", "Boosts the Attack stat if hit by a Grass-type move instead of taking damage.", 5)
       .attr(TypeImmunityStatChangeAbAttr, Type.GRASS, BattleStat.ATK, 1)
       .ignorable(),
-    new Ability(Abilities.PRANKSTER, "Prankster (N)", "Gives priority to a status move.", 5),
+    new Ability(Abilities.PRANKSTER, "Prankster", "Gives priority to a status move.", 5)
+      .attr(IncrementMovePriorityAbAttr, (move: Move) => move.category === MoveCategory.STATUS),
     new Ability(Abilities.SAND_FORCE, "Sand Force", "Boosts the power of Rock-, Ground-, and Steel-type moves in a sandstorm.", 5)
       .attr(MoveTypePowerBoostAbAttr, Type.ROCK, 1.3)
       .attr(MoveTypePowerBoostAbAttr, Type.GROUND, 1.3)

src/data/api.ts

@@ -540,8 +540,7 @@ export async function printMoves() {
     } else if (matchingLine)
       flavorText = allMoves[move.id].effect;
     const moveTarget = targetMap[move.target.name];
-    const moveTm = move.id < allMoves.length ? allMoves[move.id].tm : -1;
-    moveStr += `\n    new ${move.damage_class.name !== 'status' ? 'Attack' : (moveTarget === MoveTarget.USER ? 'Self' : '') + 'Status'}Move(Moves.${moveEnumName}, "${moveName}", Type.${move.type.name.toUpperCase()}${move.damage_class.name !== 'status' ? `, MoveCategory.${move.damage_class.name.toUpperCase()}` : ''}${move.damage_class.name !== 'status' ? `, ${move.power || -1}` : ''}, ${move.accuracy || -1}, ${move.pp}, ${moveTm}, "${flavorText?.replace(/\n/g, '\\n').replace(/  /g, ' ').replace(/’/g, '\'') || ''}", ${move.effect_chance || -1}, ${move.priority}, ${generationMap[move.generation.name]})`;
+    moveStr += `\n    new ${move.damage_class.name !== 'status' ? 'Attack' : (moveTarget === MoveTarget.USER ? 'Self' : '') + 'Status'}Move(Moves.${moveEnumName}, "${moveName}", Type.${move.type.name.toUpperCase()}${move.damage_class.name !== 'status' ? `, MoveCategory.${move.damage_class.name.toUpperCase()}` : ''}${move.damage_class.name !== 'status' ? `, ${move.power || -1}` : ''}, ${move.accuracy || -1}, ${move.pp}, "${flavorText?.replace(/\n/g, '\\n').replace(/  /g, ' ').replace(/’/g, '\'') || ''}", ${move.effect_chance || -1}, ${move.priority}, ${generationMap[move.generation.name]})`;
     const expectedTarget = move.damage_class.name !== 'status' || moveTarget !== MoveTarget.USER ? MoveTarget.NEAR_OTHER : MoveTarget.USER;
     if (matchingLine && matchingLine.length > 1) {
       const newLineIndex = matchingLine.indexOf('\n');

src/data/terrain.ts

@@ -1,5 +1,8 @@
+import Pokemon from "../field/pokemon";
 import Move from "./move";
 import { Type } from "./type";
+import * as Utils from "../utils";
+import { IncrementMovePriorityAbAttr, applyAbAttrs } from "./ability";
 
 export enum TerrainType {
   NONE,
@@ -44,10 +47,12 @@ export class Terrain {
     return 1;
   }
 
-  isMoveTerrainCancelled(move: Move): boolean {
+  isMoveTerrainCancelled(user: Pokemon, move: Move): boolean {
     switch (this.terrainType) {
       case TerrainType.PSYCHIC:
-        return move.priority > 0;
+        const priority = new Utils.IntegerHolder(move.priority);
+        applyAbAttrs(IncrementMovePriorityAbAttr, user, null, move, priority);
+        return priority.value > 0;
     }
 
     return false;