/*
 * --------------------------------------------------
 * MNKR_HenshinMZ.js
 *   Ver.1.1.1
 * Copyright (c) 2021 Munokura
 * This software is released under the MIT license.
 * http://opensource.org/licenses/mit-license.php
 * --------------------------------------------------
 */

/*:
@target MZ
@url https://raw.githubusercontent.com/munokura/MNKR-MZ-plugins/master/MNKR_HenshinMZ.js
@plugindesc You can swap actors using plugin commands.
@author munokura
@license MIT License

@help
You can swap actors using plugin commands.
The party order remains the same.

You can swap actors both on the map and during battle.
This is intended for use in situations such as swapping protagonists or
transforming.

Plugin Commands
- Actor Swap

Notes
Nothing will happen in the following situations:
- If the pre-transformation actor is not in the party
- If the post-transformation actor is in the party

# Terms of Use
MIT License.
http://opensource.org/licenses/mit-license.php
Modification and redistribution are permitted without permission from the
author,
and there are no restrictions on usage (commercial, R18+, etc.).

@command henshin
@text Actor replacement
@desc Swaps actors without changing their order.
@arg ActorId1
@text Actor ID before swapping
@desc Specify the actor ID before swapping.
@type actor
@arg ActorId2
@text Actor ID after swapping
@desc Specify the actor ID after swapping.
@type actor
*/

/*:ja
@target MZ
@url https://raw.githubusercontent.com/munokura/MNKR-MZ-plugins/master/MNKR_HenshinMZ.js
@plugindesc プラグインコマンドでアクターを入れ替えられます。
@author munokura

@help
プラグインコマンドでアクターを入れ替えられます。
パーティの並び順がそのままで入れ替わります。

マップでも戦闘中でも入れ替えられます。
主人公の入換や変身を表現する等への使用を想定しています。


プラグインコマンド
・アクター入れ替え

注意点
下記の状況では、何も起こりません。
- パーティに変身前のアクターがいない場合
- パーティに変身後のアクターがいる場合


# 利用規約
MITライセンスです。
http://opensource.org/licenses/mit-license.php
作者に無断で改変、再配布が可能で、
利用形態（商用、18禁利用等）についても制限はありません。


@command henshin
@text アクター入れ替え
@desc アクターを並び順を変えずに入れ替えます。

@arg ActorId1
@text 入換前のアクターID
@desc 入換前のアクターIDを指定します。
@type actor
@default

@arg ActorId2
@text 入換後のアクターID
@desc 入換後のアクターIDを指定します。
@type actor
@default
*/

(() => {

  'use strict'

  const pluginName = document.currentScript.src.split("/").pop().replace(/\.js$/, "");

  // 2021/06/02 chronicle氏に提示いただいたコードに全面差し替え

  PluginManager.registerCommand(pluginName, "henshin", args => {
    const actor = $gameActors.actor(Number(args.ActorId1));
    if (actor) actor.transform(Number(args.ActorId2));
  });

  Game_Actor.prototype.transform = function (actorId) {
    const allMemberIndex = actor => $gameParty.allMembers().indexOf(actor);

    const index = allMemberIndex(this);
    const transformActor = $gameActors.actor(actorId);
    let transformIndex = allMemberIndex(transformActor);
    if (!transformActor || index < 0 || transformIndex >= 0) return;

    const wasBattleMember = $gameParty.battleMembers().includes(this);
    if (wasBattleMember) $gameParty._transformActorId = actorId;
    $gameParty.addActor(actorId);
    transformIndex = allMemberIndex(transformActor);
    if (transformIndex >= 0) {
      $gameParty.swapOrder(index, allMemberIndex(transformActor));
      if (wasBattleMember) $gameParty._transformActorId = this.actorId();
      $gameParty.removeActor(this.actorId());
    }
    $gameParty._transformActorId = null;
  };

  const _Game_Party_initialize = Game_Party.prototype.initialize;
  Game_Party.prototype.initialize = function () {
    _Game_Party_initialize.apply(this, arguments);
    this._transformActorId = null;
  };

  const _Game_Party_battleMembers = Game_Party.prototype.battleMembers;
  Game_Party.prototype.battleMembers = function () {
    const members = _Game_Party_battleMembers.apply(this, arguments);
    if (this._transformActorId) members.push($gameActors.actor(this._transformActorId));
    return members;
  };

})();