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Implement fainted forme regression #10810

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5 changes: 3 additions & 2 deletions data/abilities.ts
Original file line number Diff line number Diff line change
Expand Up @@ -2030,8 +2030,7 @@ export const Abilities: import('../sim/dex-abilities').AbilityDataTable = {
if (pokemon.illusion) {
this.debug('illusion cleared');
pokemon.illusion = null;
const details = pokemon.species.name + (pokemon.level === 100 ? '' : ', L' + pokemon.level) +
(pokemon.gender === '' ? '' : ', ' + pokemon.gender) + (pokemon.set.shiny ? ', shiny' : '');
const details = pokemon.getSimpleDetails();
this.add('replace', pokemon, details);
this.add('-end', pokemon, 'Illusion');
if (this.ruleTable.has('illusionlevelmod')) {
Expand Down Expand Up @@ -4892,6 +4891,7 @@ export const Abilities: import('../sim/dex-abilities').AbilityDataTable = {
if (pokemon.species.forme !== 'Terastal') {
this.add('-activate', pokemon, 'ability: Tera Shift');
pokemon.formeChange('Terapagos-Terastal', this.effect, true);
pokemon.regressionForme = null;
pokemon.baseMaxhp = Math.floor(Math.floor(
2 * pokemon.species.baseStats['hp'] + pokemon.set.ivs['hp'] + Math.floor(pokemon.set.evs['hp'] / 4) + 100
) * pokemon.level / 100 + 10);
Expand Down Expand Up @@ -5572,6 +5572,7 @@ export const Abilities: import('../sim/dex-abilities').AbilityDataTable = {
if (pokemon.baseSpecies.baseSpecies !== 'Palafin') return;
if (pokemon.species.forme !== 'Hero') {
pokemon.formeChange('Palafin-Hero', this.effect, true);
pokemon.regressionForme = null;
}
},
onSwitchIn() {
Expand Down
1 change: 1 addition & 0 deletions data/conditions.ts
Original file line number Diff line number Diff line change
Expand Up @@ -91,6 +91,7 @@ export const Conditions: import('../sim/dex-conditions').ConditionDataTable = {
}
if (target.species.name === 'Shaymin-Sky' && target.baseSpecies.baseSpecies === 'Shaymin') {
target.formeChange('Shaymin', this.effect, true);
target.regressionForme = null;
}
},
onBeforeMovePriority: 10,
Expand Down
3 changes: 1 addition & 2 deletions data/mods/gen7pokebilities/scripts.ts
Original file line number Diff line number Diff line change
Expand Up @@ -169,8 +169,7 @@ export const Scripts: ModdedBattleScriptsData = {
this.illusion ? this.illusion.species.name : species.baseSpecies;
if (isPermanent) {
this.baseSpecies = rawSpecies;
this.details = species.name + (this.level === 100 ? '' : ', L' + this.level) +
(this.gender === '' ? '' : ', ' + this.gender) + (this.set.shiny ? ', shiny' : '');
this.details = this.getSimpleDetails();
this.battle.add('detailschange', this, (this.illusion || this).details);
if (source.effectType === 'Item') {
this.canTerastallize = null; // National Dex behavior
Expand Down
3 changes: 1 addition & 2 deletions data/mods/gen9ssb/abilities.ts
Original file line number Diff line number Diff line change
Expand Up @@ -1755,8 +1755,7 @@ export const Abilities: import('../../../sim/dex-abilities').ModdedAbilityDataTa
target.clearBoosts();
this.add('-clearboost', target);
this.boost({atk: 1, def: -1, spa: 1, spd: -1, spe: 1});
const details = target.species.name + (target.level === 100 ? '' : ', L' + target.level) +
(target.gender === '' ? '' : ', ' + target.gender) + (target.set.shiny ? ', shiny' : '');
const details = target.getSimpleDetails();
target.details = details;
this.add('replace', target, details);
}
Expand Down
6 changes: 2 additions & 4 deletions data/mods/gen9ssb/moves.ts
Original file line number Diff line number Diff line change
Expand Up @@ -4236,8 +4236,7 @@ export const Moves: import('../../../sim/dex-moves').ModdedMoveDataTable = {
pokemon.cureStatus();
this.boost({def: 1, spd: 1});
(pokemon as any).level += 5;
pokemon.details = pokemon.species.name + (pokemon.level === 100 ? '' : ', L' + pokemon.level) +
(pokemon.gender === '' ? '' : ', ' + pokemon.gender) + (pokemon.set.shiny ? ', shiny' : '');
pokemon.details = pokemon.getSimpleDetails();
this.add('-anim', pokemon, 'Geomancy', pokemon);
this.add('replace', pokemon, pokemon.details);
this.add('-message', `${pokemon.name} gained 5 levels!`);
Expand Down Expand Up @@ -5905,8 +5904,7 @@ export const Moves: import('../../../sim/dex-moves').ModdedMoveDataTable = {
this.add(`c:|${getName((source.illusion || source).name)}|lol never do that ever again thanks`);
this.add('custom', '-endterastallize', pokemon);
delete pokemon.terastallized;
const details = pokemon.species.name + (pokemon.level === 100 ? '' : ', L' + pokemon.level) +
(pokemon.gender === '' ? '' : ', ' + pokemon.gender) + (pokemon.set.shiny ? ', shiny' : '');
const details = pokemon.getSimpleDetails();
this.add('detailschange', pokemon, details);
}
},
Expand Down
6 changes: 2 additions & 4 deletions data/mods/gen9ssb/scripts.ts
Original file line number Diff line number Diff line change
Expand Up @@ -89,8 +89,7 @@ export function changeSet(context: Battle, pokemon: Pokemon, newSet: SSBSet, cha
pokemon.teraType = newSet.teraType === 'Any' ? context.sample(allTypes) :
Array.isArray(newSet.teraType) ? context.sample(newSet.teraType) : newSet.teraType;
}
const details = pokemon.species.name + (pokemon.level === 100 ? '' : ', L' + pokemon.level) +
(pokemon.gender === '' ? '' : ', ' + pokemon.gender) + (pokemon.set.shiny ? ', shiny' : '');
const details = pokemon.getSimpleDetails();
if (oldShiny !== pokemon.set.shiny || oldGender !== pokemon.gender) context.add('replace', pokemon, details);
if (changeAbility) pokemon.setAbility(newSet.ability as string, undefined, true);

Expand Down Expand Up @@ -386,8 +385,7 @@ export const Scripts: ModdedBattleScriptsData = {
const species = pokemon.setSpecies(rawSpecies);
if (!species) continue;
pokemon.baseSpecies = rawSpecies;
pokemon.details = species.name + (pokemon.level === 100 ? '' : ', L' + pokemon.level) +
(pokemon.gender === '' ? '' : ', ' + pokemon.gender) + (pokemon.set.shiny ? ', shiny' : '');
pokemon.details = pokemon.getSimpleDetails();
// pokemon.setAbility(species.abilities['0'], null, true);
// pokemon.baseAbility = pokemon.ability;

Expand Down
6 changes: 2 additions & 4 deletions data/mods/mixandmega/scripts.ts
Original file line number Diff line number Diff line change
Expand Up @@ -67,8 +67,7 @@ export const Scripts: ModdedBattleScriptsData = {
const species = pokemon.setSpecies(rawSpecies);
if (!species) continue;
pokemon.baseSpecies = rawSpecies;
pokemon.details = species.name + (pokemon.level === 100 ? '' : ', L' + pokemon.level) +
(pokemon.gender === '' ? '' : ', ' + pokemon.gender) + (pokemon.set.shiny ? ', shiny' : '');
pokemon.details = pokemon.getSimpleDetails();
pokemon.ability = this.toID(species.abilities['0']);
pokemon.baseAbility = pokemon.ability;
}
Expand Down Expand Up @@ -118,8 +117,7 @@ export const Scripts: ModdedBattleScriptsData = {
const species = pokemon.setSpecies(rawSpecies);
if (!species) continue;
pokemon.baseSpecies = rawSpecies;
pokemon.details = species.name + (pokemon.level === 100 ? '' : ', L' + pokemon.level) +
(pokemon.gender === '' ? '' : ', ' + pokemon.gender) + (pokemon.set.shiny ? ', shiny' : '');
pokemon.details = pokemon.getSimpleDetails();
pokemon.ability = this.toID(species.abilities['0']);
pokemon.baseAbility = pokemon.ability;

Expand Down
3 changes: 1 addition & 2 deletions data/mods/pokebilities/scripts.ts
Original file line number Diff line number Diff line change
Expand Up @@ -169,8 +169,7 @@ export const Scripts: ModdedBattleScriptsData = {
this.illusion ? this.illusion.species.name : species.baseSpecies;
if (isPermanent) {
this.baseSpecies = rawSpecies;
this.details = species.name + (this.level === 100 ? '' : ', L' + this.level) +
(this.gender === '' ? '' : ', ' + this.gender) + (this.set.shiny ? ', shiny' : '');
this.details = this.getSimpleDetails();
this.battle.add('detailschange', this, (this.illusion || this).details);
if (source.effectType === 'Item') {
this.canTerastallize = null; // National Dex behavior
Expand Down
6 changes: 5 additions & 1 deletion sim/battle-actions.ts
Original file line number Diff line number Diff line change
Expand Up @@ -1949,6 +1949,7 @@ export class BattleActions {
}
if (pokemon.species.name === 'Terapagos-Terastal' && type === 'Stellar') {
pokemon.formeChange('Terapagos-Stellar', null, true);
pokemon.regressionForme = {species: this.dex.species.get('Terapagos'), ability: toID('Tera Shift')};
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I'm just wondering whether this can be null or failing that {species: pokemon.baseSpecies, ability: pokemon.baseAbility}.

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@andrebastosdias andrebastosdias Jan 10, 2025

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Because when Terapagos activates Tera Shift, it sets baseSpecies to Terapagos-Terastal and regressionForme = null. Terapagos-Stellar is the only case where we need to revert to a form that was not the current baseSpecies.

For Morpeko, I just added a condition to avoid adding unnecessary logs if it was in its base form when it terastalized.

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Sorry, I got the Terapagos formes confused there.

pokemon.baseMaxhp = Math.floor(Math.floor(
2 * pokemon.species.baseStats['hp'] + pokemon.set.ivs['hp'] + Math.floor(pokemon.set.evs['hp'] / 4) + 100
) * pokemon.level / 100 + 10);
Expand All @@ -1958,8 +1959,11 @@ export class BattleActions {
this.battle.add('-heal', pokemon, pokemon.getHealth, '[silent]');
}
if (pokemon.species.baseSpecies === 'Morpeko') {
if (pokemon.species.name !== 'Morpeko') {
pokemon.regressionForme = {species: pokemon.baseSpecies, ability: pokemon.baseAbility};
}
pokemon.baseSpecies = pokemon.species;
pokemon.details = pokemon.details.replace('Morpeko', pokemon.species.name);
pokemon.details = pokemon.getSimpleDetails();
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@KrisXV KrisXV Jan 9, 2025

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Suggested change
pokemon.details = pokemon.getSimpleDetails();
pokemon.details = pokemon.getSimpleDetails(pokemon.species.name);

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@andrebastosdias andrebastosdias Jan 10, 2025

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By default, pokemon.species.name is used. Currently, that argument is only used for Greninja-Bond.

}
this.battle.runEvent('AfterTerastallization', pokemon);
}
Expand Down
10 changes: 8 additions & 2 deletions sim/battle.ts
Original file line number Diff line number Diff line change
Expand Up @@ -2370,6 +2370,13 @@ export class Battle {
if (pokemon.side.totalFainted < 100) pokemon.side.totalFainted++;
this.runEvent('Faint', pokemon, faintData.source, faintData.effect);
this.singleEvent('End', pokemon.getAbility(), pokemon.abilityState, pokemon);
if (pokemon.regressionForme) {
pokemon.baseSpecies = pokemon.regressionForme.species;
pokemon.baseAbility = pokemon.regressionForme.ability;
pokemon.details = pokemon.getSimpleDetails(pokemon.baseSpecies.name);
pokemon.regressionForme = null;
this.add('detailschange', pokemon, pokemon.details, '[silent]');
}
pokemon.clearVolatile(false);
pokemon.fainted = true;
pokemon.illusion = null;
Expand Down Expand Up @@ -2494,8 +2501,7 @@ export class Battle {
const species = pokemon.setSpecies(rawSpecies);
if (!species) continue;
pokemon.baseSpecies = rawSpecies;
pokemon.details = species.name + (pokemon.level === 100 ? '' : ', L' + pokemon.level) +
(pokemon.gender === '' ? '' : ', ' + pokemon.gender) + (pokemon.set.shiny ? ', shiny' : '');
pokemon.details = pokemon.getSimpleDetails();
pokemon.setAbility(species.abilities['0'], null, true);
pokemon.baseAbility = pokemon.ability;

Expand Down
37 changes: 22 additions & 15 deletions sim/pokemon.ts
Original file line number Diff line number Diff line change
Expand Up @@ -131,6 +131,9 @@ export class Pokemon {
faintQueued: boolean;
subFainted: boolean | null;

/** If this Pokemon faints will change to this species */
regressionForme: {species: Species, ability: ID} | null;

types: string[];
addedType: string;
knownType: boolean;
Expand Down Expand Up @@ -353,8 +356,7 @@ export class Pokemon {
this.position = 0;
let displayedSpeciesName = this.species.name;
if (displayedSpeciesName === 'Greninja-Bond') displayedSpeciesName = 'Greninja';
this.details = displayedSpeciesName + (this.level === 100 ? '' : ', L' + this.level) +
(this.gender === '' ? '' : ', ' + this.gender) + (this.set.shiny ? ', shiny' : '');
this.details = this.getSimpleDetails(displayedSpeciesName);

this.status = '';
this.statusState = {};
Expand Down Expand Up @@ -419,6 +421,8 @@ export class Pokemon {
this.faintQueued = false;
this.subFainted = null;

this.regressionForme = null;

this.types = this.baseSpecies.types;
this.baseTypes = this.types;
this.addedType = '';
Expand Down Expand Up @@ -509,17 +513,21 @@ export class Pokemon {
return this.isActive ? this.getSlot() + fullname.slice(2) : fullname;
}

getSimpleDetails(displayedSpeciesName: string | null = null, illusionDetails = false) {
let name = displayedSpeciesName || this.species.name;
let level = this.level;
if (illusionDetails && this.illusion) {
if (this.battle.ruleTable.has('illusionlevelmod')) level = this.illusion.level;
name = this.illusion.species.name;
if (name === 'Greninja-Bond') name = 'Greninja';
}
return name + (level === 100 ? '' : ', L' + level) +
(this.gender === '' ? '' : ', ' + this.gender) + (this.set.shiny ? ', shiny' : '');
}

getDetails = () => {
const health = this.getHealth();
let details = this.details;
if (this.illusion) {
const level = this.battle.ruleTable.has('illusionlevelmod') ? this.illusion.level : this.level;
let displayedSpeciesName = this.illusion.species.name;
if (displayedSpeciesName === 'Greninja-Bond') displayedSpeciesName = 'Greninja';
const illusionDetails = displayedSpeciesName + (level === 100 ? '' : ', L' + level) +
(this.illusion.gender === '' ? '' : ', ' + this.illusion.gender) + (this.illusion.set.shiny ? ', shiny' : '');
details = illusionDetails;
}
let details = this.getSimpleDetails(null, true);
if (this.terastallized) details += `, tera:${this.terastallized}`;
return {side: health.side, secret: `${details}|${health.secret}`, shared: `${details}|${health.shared}`};
};
Expand Down Expand Up @@ -1320,8 +1328,7 @@ export class Pokemon {

// Pokemon transformed into Ogerpon cannot Terastallize
// restoring their ability to tera after they untransform is handled ELSEWHERE
if (this.species.baseSpecies === 'Ogerpon' && this.canTerastallize) this.canTerastallize = false;
if (this.species.baseSpecies === 'Terapagos' && this.canTerastallize) this.canTerastallize = false;
if (['Ogerpon', 'Terapagos'].includes(this.species.baseSpecies) && this.canTerastallize) this.canTerastallize = false;

return true;
}
Expand Down Expand Up @@ -1386,9 +1393,9 @@ export class Pokemon {
const apparentSpecies =
this.illusion ? this.illusion.species.name : species.baseSpecies;
if (isPermanent) {
if (!this.regressionForme) this.regressionForme = {species: this.baseSpecies, ability: this.baseAbility};
this.baseSpecies = rawSpecies;
this.details = species.name + (this.level === 100 ? '' : ', L' + this.level) +
(this.gender === '' ? '' : ', ' + this.gender) + (this.set.shiny ? ', shiny' : '');
this.details = this.getSimpleDetails();
let details = (this.illusion || this).details;
if (this.terastallized) details += `, tera:${this.terastallized}`;
this.battle.add('detailschange', this, details);
Expand Down
10 changes: 10 additions & 0 deletions test/assert.js
Original file line number Diff line number Diff line change
Expand Up @@ -81,6 +81,16 @@ assert.fullHP = function (pokemon, message) {
});
};

assert.hasAbility = function (pokemon, ability, message) {
const actual = pokemon.ability;
const expected = toID(ability);
if (actual === expected) return;
throw new AssertionError({
message: message || `Expected ${pokemon} ability to be ${expected}, not ${actual}.`,
stackStartFunction: assert.hasAbility,
});
};

assert.holdsItem = function (pokemon, message) {
if (pokemon.item) return;
throw new AssertionError({
Expand Down
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