pokemon-showdown/data/mods/gen8/rulesets.ts

export const Rulesets: {[k: string]: ModdedFormatData} = {
	standard: {
		inherit: true,
		ruleset: [
			'Obtainable', 'Team Preview', 'Sleep Clause Mod', 'Species Clause', 'Nickname Clause', 'OHKO Clause', 'Evasion Items Clause', 'Evasion Moves Clause', 'Endless Battle Clause', 'HP Percentage Mod', 'Cancel Mod',
		],
	},
	standarddoubles: {
		inherit: true,
		ruleset: [
			'Obtainable', 'Team Preview', 'Species Clause', 'Nickname Clause', 'OHKO Clause', 'Evasion Moves Clause', 'Gravity Sleep Clause', 'Endless Battle Clause', 'HP Percentage Mod', 'Cancel Mod',
		],
	},
	standardoms: {
		inherit: true,
		ruleset: [
			'Obtainable', 'Team Preview', 'Species Clause', 'Nickname Clause', 'OHKO Clause', 'Evasion Moves Clause', 'Endless Battle Clause', 'Dynamax Clause', 'HP Percentage Mod', 'Cancel Mod', 'Overflow Stat Mod',
		],
	},
	tiershiftmod: {
		inherit: true,
		desc: `Pokémon below OU get their stats, excluding HP, boosted. UU/RUBL get +10, RU/NUBL get +20, NU/PUBL get +30, and PU or lower get +40.`,
		onModifySpecies(species, target, source, effect) {
			if (!species.baseStats) return;
			const boosts: {[tier: string]: number} = {
				uu: 10,
				rubl: 10,
				ru: 20,
				nubl: 20,
				nu: 30,
				publ: 30,
				pu: 40,
				nfe: 40,
				lc: 40,
			};
			let tier: string = this.toID(species.tier);
			if (!(tier in boosts)) return;
			// Non-Pokemon bans in lower tiers
			if (target) {
				if (target.set.item === 'lightclay') return;
				if (['drizzle', 'drought', 'slushrush'].includes(target.set.ability) && boosts[tier] > 20) tier = 'nubl';
			}
			const pokemon = this.dex.deepClone(species);
			pokemon.bst = pokemon.baseStats['hp'];
			const boost = boosts[tier];
			let statName: StatID;
			for (statName in pokemon.baseStats as StatsTable) {
				if (statName === 'hp') continue;
				pokemon.baseStats[statName] = this.clampIntRange(pokemon.baseStats[statName] + boost, 1, 255);
				pokemon.bst += pokemon.baseStats[statName];
			}
			return pokemon;
		},
	},
};