Shared Power: Fix Trace and Mirror Armor

config/formats.ts

@@ -1392,7 +1392,7 @@ export const Formats: FormatList = [
 			`&bullet; <a href="https://www.smogon.com/forums/threads/3660877/">Shared Power</a>`,
 		],
 
-		mod: 'gen8',
+		mod: 'sharedpower',
 		searchShow: false,
 		ruleset: ['Standard', 'Dynamax Clause'],
 		banlist: [
@@ -1412,7 +1412,10 @@ export const Formats: FormatList = [
 			const sharedPower = new Set<string>();
 			for (const ally of pokemon.side.pokemon) {
 				if (ally.previouslySwitchedIn > 0) {
-					if (['mirrorarmor', 'trace'].includes(ally.baseAbility)) continue;
+					if (pokemon.battle.dex.currentMod !== 'sharedpower' && ['trace', 'mirrorarmor'].includes(ally.baseAbility)) {
+						sharedPower.add('noability');
+						continue;
+					}
 					sharedPower.add(ally.baseAbility);
 				}
 			}
@@ -1432,29 +1435,14 @@ export const Formats: FormatList = [
 			let format = this.format;
 			if (!format.getSharedPower) format = this.dex.getFormat('gen8sharedpower');
 			for (const ability of format.getSharedPower!(pokemon)) {
+				if (ability === 'noability') {
+					this.hint(`Mirror Armor and Trace break in Shared Power formats that don't use Shared Power as a base, so they get removed from non-base users.`);
+				}
 				const effect = 'ability:' + ability;
 				delete pokemon.volatiles[effect];
 				pokemon.addVolatile(effect);
 			}
 		},
-		field: {
-			suppressingWeather() {
-				for (const pokemon of this.battle.getAllActive()) {
-					if (pokemon && !pokemon.ignoringAbility() && pokemon.hasAbility('Cloud Nine')) {
-						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];
-			},
-		},
 	},
 	{
 		name: "[Gen 8] The Loser's Game",

data/mods/pokebilities/scripts.ts

@@ -1,10 +1,11 @@
 export const Scripts: ModdedBattleScriptsData = {
+	gen: 8,
 	field: {
 		suppressingWeather() {
 			for (const pokemon of this.battle.getAllActive()) {
 				if (pokemon && !pokemon.fainted && !pokemon.ignoringAbility() &&
 					(pokemon.getAbility().suppressWeather ||
-						pokemon.m.innates?.some((k: string) => pokemon.volatiles['ability:' + k]?.suppressWeather))) {
+						pokemon.m.innates?.some((k: string) => this.battle.dex.getAbility(k).suppressWeather))) {
 					return true;
 				}
 			}

data/mods/sharedpower/abilities.ts

@@ -0,0 +1,46 @@
+export const Abilities: {[k: string]: ModdedAbilityData} = {
+	mirrorarmor: {
+		inherit: true,
+		onBoost(boost, target, source, effect) {
+			// Don't bounce self stat changes, or boosts that have already bounced
+			if (target === source || !boost || effect.id === 'mirrorarmor' || effect.id === 'ability:mirrorarmor') return;
+			let b: BoostName;
+			for (b in boost) {
+				if (boost[b]! < 0) {
+					if (target.boosts[b] === -6) continue;
+					const negativeBoost: SparseBoostsTable = {};
+					negativeBoost[b] = boost[b];
+					delete boost[b];
+					this.add('-ability', target, 'Mirror Armor');
+					this.boost(negativeBoost, source, target, null, true);
+				}
+			}
+		},
+	},
+	trace: {
+		inherit: true,
+		onUpdate(pokemon) {
+			if (!pokemon.isStarted || this.effectData.gaveUp) return;
+			const isAbility = pokemon.ability === 'trace';
+
+			const additionalBannedAbilities = [
+				// Zen Mode included here for compatability with Gen 5-6
+				'noability', 'flowergift', 'forecast', 'hungerswitch', 'illusion', 'imposter', 'neutralizinggas', 'powerofalchemy', 'receiver', 'trace', 'zenmode',
+			];
+			const possibleTargets = pokemon.adjacentFoes().filter(target => (
+				!target.getAbility().isPermanent && !additionalBannedAbilities.includes(target.ability)
+			));
+			if (!possibleTargets.length) return;
+
+			const target = this.sample(possibleTargets);
+			const ability = target.getAbility();
+			this.add('-ability', pokemon, ability, '[from] ability: Trace', '[of] ' + target);
+			if (isAbility) {
+				pokemon.setAbility(ability);
+			} else {
+				pokemon.removeVolatile('ability:trace');
+				pokemon.addVolatile('ability:' + ability.id, pokemon);
+			}
+		},
+	},
+};

data/mods/sharedpower/scripts.ts

@@ -0,0 +1,23 @@
+export const Scripts: ModdedBattleScriptsData = {
+	gen: 8,
+	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.getAbility(x).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];
+		},
+	},
+};