Implement support for relearner only moves (#1667)

Currently only used by Zangoose

src/data/pokemon-level-moves.ts

@@ -5827,20 +5827,20 @@ export const pokemonSpeciesLevelMoves: PokemonSpeciesLevelMoves = {
     [ 56, Moves.SKY_ATTACK ],
   ],
   [Species.ZANGOOSE]: [
+    [ -1, Moves.DOUBLE_KICK ],
+    [ -1, Moves.DISABLE ],
+    [ -1, Moves.COUNTER ],
+    [ -1, Moves.FURY_SWIPES ],
+    [ -1, Moves.CURSE ],
+    [ -1, Moves.FLAIL ],
+    [ -1, Moves.BELLY_DRUM ],
+    [ -1, Moves.FEINT ],
+    [ -1, Moves.NIGHT_SLASH ],
+    [ -1, Moves.DOUBLE_HIT ],
+    [ -1, Moves.QUICK_GUARD ],
+    [ -1, Moves.FINAL_GAMBIT ],
     [ 1, Moves.SCRATCH ],
     [ 1, Moves.LEER ],
-    [ 1, Moves.DOUBLE_KICK ],
-    [ 1, Moves.DISABLE ],
-    [ 1, Moves.COUNTER ],
-    [ 1, Moves.FURY_SWIPES ],
-    [ 1, Moves.CURSE ],
-    [ 1, Moves.FLAIL ],
-    [ 1, Moves.BELLY_DRUM ],
-    [ 1, Moves.FEINT ],
-    [ 1, Moves.NIGHT_SLASH ],
-    [ 1, Moves.DOUBLE_HIT ],
-    [ 1, Moves.QUICK_GUARD ],
-    [ 1, Moves.FINAL_GAMBIT ],
     [ 5, Moves.QUICK_ATTACK ],
     [ 8, Moves.FURY_CUTTER ],
     [ 12, Moves.METAL_CLAW ],

src/data/pokemon-species.ts

@@ -779,7 +779,7 @@ export default class PokemonSpecies extends PokemonSpeciesForm implements Locali
   }
 
   // This could definitely be written better and more accurate to the getSpeciesForLevel logic, but it is only for generating movesets for evolved Pokemon
-  getSimulatedEvolutionChain(currentLevel: integer, forTrainer: boolean = false, isBoss: boolean = false, player: boolean = false) {
+  getSimulatedEvolutionChain(currentLevel: integer, forTrainer: boolean = false, isBoss: boolean = false, player: boolean = false): [Species, integer][] {
     const ret = [];
     if (pokemonPrevolutions.hasOwnProperty(this.speciesId)) {
       const prevolutionLevels = this.getPrevolutionLevels().reverse();

src/field/pokemon.ts

@@ -849,8 +849,12 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
     return ret;
   }
 
+  /**
+   * All moves that could be relearned by this pokemon at this point. Used for memory mushrooms.
+   * @returns {Moves[]} The valid moves
+   */
   getLearnableLevelMoves(): Moves[] {
-    return this.getLevelMoves(1, true).map(lm => lm[1]).filter(lm => !this.moveset.filter(m => m.moveId === lm).length).filter((move: Moves, i: integer, array: Moves[]) => array.indexOf(move) === i);
+    return this.getLevelMoves(1, true, false, true).map(lm => lm[1]).filter(lm => !this.moveset.filter(m => m.moveId === lm).length).filter((move: Moves, i: integer, array: Moves[]) => array.indexOf(move) === i);
   }
 
   /**
@@ -1235,7 +1239,15 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
     return null;
   }
 
-  getLevelMoves(startingLevel?: integer, includeEvolutionMoves: boolean = false, simulateEvolutionChain: boolean = false): LevelMoves {
+  /**
+   * Gets all level up moves in a given range for a particular pokemon.
+   * @param {integer} startingLevel Don't include moves below this level
+   * @param {boolean} includeEvolutionMoves Whether to include evolution moves
+   * @param {boolean} simulateEvolutionChain Whether to include moves from prior evolutions
+   * @param {boolean} includeRelearnerMoves Whether to include moves that would require a relearner. Note the move relearner inherently allows evolution moves
+   * @returns {LevelMoves} A list of moves and the levels they can be learned at
+   */
+  getLevelMoves(startingLevel?: integer, includeEvolutionMoves: boolean = false, simulateEvolutionChain: boolean = false, includeRelearnerMoves: boolean = false): LevelMoves {
     const ret: LevelMoves = [];
     let levelMoves: LevelMoves = [];
     if (!startingLevel) {
@@ -1246,7 +1258,30 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
       for (let e = 0; e < evolutionChain.length; e++) {
         // TODO: Might need to pass specific form index in simulated evolution chain
         const speciesLevelMoves = getPokemonSpeciesForm(evolutionChain[e][0] as Species, this.formIndex).getLevelMoves();
-        levelMoves.push(...speciesLevelMoves.filter(lm => (includeEvolutionMoves && !lm[0]) || ((!e || lm[0] > 1) && (e === evolutionChain.length - 1 || lm[0] <= evolutionChain[e + 1][1]))));
+        if (includeRelearnerMoves) {
+          levelMoves.push(...speciesLevelMoves);
+        } else {
+          levelMoves.push(...speciesLevelMoves.filter(lm => (includeEvolutionMoves && lm[0] === 0) || ((!e || lm[0] > 1) && (e === evolutionChain.length - 1 || lm[0] <= evolutionChain[e + 1][1]))));
+        }
+      }
+    } else {
+      levelMoves = this.getSpeciesForm(true).getLevelMoves().filter(lm => (includeEvolutionMoves && lm[0] === 0) || (includeRelearnerMoves && lm[0] === -1) || lm[0] > 0);
+    }
+    if (this.fusionSpecies) {
+      if (simulateEvolutionChain) {
+        const fusionEvolutionChain = this.fusionSpecies.getSimulatedEvolutionChain(this.level, this.hasTrainer(), this.isBoss(), this.isPlayer());
+        for (let e = 0; e < fusionEvolutionChain.length; e++) {
+          // TODO: Might need to pass specific form index in simulated evolution chain
+          const speciesLevelMoves = getPokemonSpeciesForm(fusionEvolutionChain[e][0] as Species, this.fusionFormIndex).getLevelMoves();
+          if (includeRelearnerMoves) {
+            levelMoves.push(...speciesLevelMoves.filter(lm => (includeEvolutionMoves && lm[0] === 0) || lm[0] !== 0));
+          } else {
+            levelMoves.push(...speciesLevelMoves.filter(lm => (includeEvolutionMoves && lm[0] === 0) || ((!e || lm[0] > 1) && (e === fusionEvolutionChain.length - 1 || lm[0] <= fusionEvolutionChain[e + 1][1]))));
+          }
+        }
+      } else {
+        levelMoves.push(...this.getFusionSpeciesForm(true).getLevelMoves().filter(lm => (includeEvolutionMoves && lm[0] === 0) || (includeRelearnerMoves && lm[0] === -1) || lm[0] > 0));
+      }
     }
     levelMoves.sort((lma: [integer, integer], lmb: [integer, integer]) => lma[0] > lmb[0] ? 1 : lma[0] < lmb[0] ? -1 : 0);
     const uniqueMoves: Moves[] = [];
@@ -1257,51 +1292,11 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
       uniqueMoves.push(lm[1]);
       return true;
     });
-    } else {
+
-      levelMoves = this.getSpeciesForm(true).getLevelMoves();
-    }
-    if (this.fusionSpecies) {
-      const evolutionLevelMoves = levelMoves.slice(0, Math.max(levelMoves.findIndex(lm => !!lm[0]), 0));
-      const fusionLevelMoves = this.getFusionSpeciesForm(true).getLevelMoves();
-      const fusionEvolutionLevelMoves = fusionLevelMoves.slice(0, Math.max(fusionLevelMoves.findIndex(flm => !!flm[0]), 0));
-      const newLevelMoves: LevelMoves = [];
-      while (levelMoves.length && levelMoves[0][0] < startingLevel) {
-        levelMoves.shift();
-      }
-      while (fusionLevelMoves.length && fusionLevelMoves[0][0] < startingLevel) {
-        fusionLevelMoves.shift();
-      }
-      if (includeEvolutionMoves) {
-        for (const elm of evolutionLevelMoves.reverse()) {
-          levelMoves.unshift(elm);
-        }
-        for (const felm of fusionEvolutionLevelMoves.reverse()) {
-          fusionLevelMoves.unshift(felm);
-        }
-      }
-      for (let l = includeEvolutionMoves ? 0 : startingLevel; l <= this.level; l++) {
-        if (l === 1 && startingLevel > 1) {
-          l = startingLevel;
-        }
-        while (levelMoves.length && levelMoves[0][0] === l) {
-          const levelMove = levelMoves.shift();
-          if (!newLevelMoves.find(lm => lm[1] === levelMove[1])) {
-            newLevelMoves.push(levelMove);
-          }
-        }
-        while (fusionLevelMoves.length && fusionLevelMoves[0][0] === l) {
-          const fusionLevelMove = fusionLevelMoves.shift();
-          if (!newLevelMoves.find(lm => lm[1] === fusionLevelMove[1])) {
-            newLevelMoves.push(fusionLevelMove);
-          }
-        }
-      }
-      levelMoves = newLevelMoves;
-    }
     if (levelMoves) {
       for (const lm of levelMoves) {
         const level = lm[0];
-        if ((!includeEvolutionMoves || level) && level < startingLevel) {
+        if (!includeRelearnerMoves && ((level > 0 && level < startingLevel) || (!includeEvolutionMoves && level === 0) || level < 0)) {
           continue;
         } else if (level > this.level) {
           break;

src/ui/starter-select-ui-handler.ts

@@ -2366,7 +2366,7 @@ export default class StarterSelectUiHandler extends MessageUiHandler {
         } else {
           levelMoves = pokemonSpeciesLevelMoves[species.speciesId];
         }
-        this.speciesStarterMoves.push(...levelMoves.filter(lm => lm[0] <= 5).map(lm => lm[1]));
+        this.speciesStarterMoves.push(...levelMoves.filter(lm => lm[0] > 0 && lm[0] <= 5).map(lm => lm[1]));
         if (speciesEggMoves.hasOwnProperty(species.speciesId)) {
           for (let em = 0; em < 4; em++) {
             if (this.scene.gameData.starterData[species.speciesId].eggMoves & Math.pow(2, em)) {