Add IV Scanner item

src/modifier/modifier-type.ts

@@ -710,6 +710,8 @@ export const modifierTypes = {
   SHINY_CHARM: () => new ModifierType('Shiny Charm', 'Dramatically increases the chance of a wild Pokémon being shiny', (type, _args) => new Modifiers.ShinyRateBoosterModifier(type)),
   ABILITY_CHARM: () => new ModifierType('Ability Charm', 'Dramatically increases the chance of a wild Pokémon having a hidden ability', (type, _args) => new Modifiers.HiddenAbilityRateBoosterModifier(type)),
 
+  IV_SCANNER: () => new ModifierType('IV Scanner', 'Allows scanning the IVs of wild Pokémon', (type, _args) => new Modifiers.IvScannerModifier(type), 'scanner'),
+
   DNA_SPLICERS: () => new FusePokemonModifierType('DNA Splicers'),
   REVERSE_DNA_SPLICERS: () => new UnfusePokemonModifierType('Reverse DNA Splicers', 'dna_splicers'),
 
@@ -819,6 +821,7 @@ const modifierPool = {
     new WeightedModifierType(modifierTypes.EXP_CHARM, 4),
     new WeightedModifierType(modifierTypes.OVAL_CHARM, 2),
     new WeightedModifierType(modifierTypes.ABILITY_CHARM, 2),
+    new WeightedModifierType(modifierTypes.IV_SCANNER, 2),
     new WeightedModifierType(modifierTypes.EXP_BALANCE, 1),
     new WeightedModifierType(modifierTypes.COIN_CASE, 1),
     new WeightedModifierType(modifierTypes.REVERSE_DNA_SPLICERS, (party: Pokemon[]) => party[0].scene.gameMode !== GameMode.SPLICED_ENDLESS && party.filter(p => p.fusionSpecies).length ? 3 : 0),

src/modifier/modifier.ts

@@ -271,8 +271,8 @@ export class DoubleBattleChanceBoosterModifier extends LapsingPersistentModifier
     return false;
   }
 
-  clone(): TempBattleStatBoosterModifier {
-    return new TempBattleStatBoosterModifier(this.type as ModifierTypes.TempBattleStatBoosterModifierType, this.battlesLeft, this.stackCount);
+  clone(): DoubleBattleChanceBoosterModifier {
+    return new DoubleBattleChanceBoosterModifier(this.type as ModifierTypes.DoubleBattleChanceBoosterModifierType, this.battlesLeft, this.stackCount);
   }
 
   getArgs(): any[] {
@@ -1392,6 +1392,28 @@ export class ContactHeldItemTransferChanceModifier extends HeldItemTransferModif
   }
 }
 
+export class IvScannerModifier extends PersistentModifier {
+  constructor(type: ModifierType, stackCount?: integer) {
+    super(type, stackCount);
+  }
+
+  match(modifier: Modifier): boolean {
+    return modifier instanceof IvScannerModifier;
+  }
+
+  clone(): IvScannerModifier {
+    return new IvScannerModifier(this.type, this.stackCount);
+  }
+
+  apply(args: any[]): boolean {
+    return true;
+  }
+
+  getMaxStackCount(): integer {
+    return 5;
+  }
+}
+
 export class ExtraModifierModifier extends PersistentModifier {
   constructor(type: ModifierType, stackCount?: integer) {
     super(type, stackCount);