pokemon-showdown/data/mods/sharedpower/scripts.ts

export const Scripts: ModdedBattleScriptsData = {
	field: {
		suppressingWeather() {
			for (const pokemon of this.battle.getAllActive()) {
				const innates = Object.keys(pokemon.volatiles).filter(x => x.startsWith('ability:'));
				if (pokemon && !pokemon.ignoringAbility() &&
					(pokemon.getAbility().suppressWeather || innates.some(x => (
						this.battle.dex.abilities.get(x.replace('ability:', '')).suppressWeather
					)))) {
					return true;
				}
			}
			return false;
		},
	},
	pokemon: {
		hasAbility(ability) {
			if (this.ignoringAbility()) return false;
			if (Array.isArray(ability)) return ability.some(abil => this.hasAbility(abil));
			const abilityid = this.battle.toID(ability);
			return this.ability === abilityid || !!this.volatiles['ability:' + abilityid];
		},
		ignoringAbility() {
			// Check if any active pokemon have the ability Neutralizing Gas
			let neutralizinggas = false;
			for (const pokemon of this.battle.getAllActive()) {
				// can't use hasAbility because it would lead to infinite recursion
				if (
					(pokemon.ability === ('neutralizinggas' as ID) || pokemon.m.abils?.includes('ability:neutralizinggas')) &&
					!pokemon.volatiles['gastroacid'] && !pokemon.abilityState.ending
				) {
					neutralizinggas = true;
					break;
				}
			}

			return !!(
				(this.battle.gen >= 5 && !this.isActive) ||
				((this.volatiles['gastroacid'] ||
					(neutralizinggas && (this.ability !== ('neutralizinggas' as ID) ||
						this.m.abils?.includes('ability:neutralizinggas'))
					)) && !this.getAbility().isPermanent
				)
			);
		},
	},
};