/*
 * ==============================================================================
 * ** Victor Engine MV - Skill Ammunition
 * ------------------------------------------------------------------------------
 * VE_SkillAmmunition.js
 * ==============================================================================
 */

var Imported = Imported || {};
Imported['VE - Skill Ammunition'] = '1.01';

var VictorEngine = VictorEngine || {};
VictorEngine.SkillAmmunition = VictorEngine.SkillAmmunition || {};

(function () {

	VictorEngine.SkillAmmunition.loadDatabase = DataManager.loadDatabase;
	DataManager.loadDatabase = function () {
		VictorEngine.SkillAmmunition.loadDatabase.call(this);
		PluginManager.requiredPlugin.call(PluginManager, 'VE - Skill Ammunition', 'VE - Basic Module', '1.12');
	};

	VictorEngine.SkillAmmunition.requiredPlugin = PluginManager.requiredPlugin;
	PluginManager.requiredPlugin = function (name, required, version) {
		if (!VictorEngine.BasicModule) {
			var msg = 'The plugin ' + name + ' requires the plugin ' + required;
			msg += ' v' + version + ' or higher installed to work properly.';
			msg += ' Go to http://victorenginescripts.wordpress.com/ to download the plugin.';
			throw new Error(msg);
		} else {
			VictorEngine.SkillAmmunition.requiredPlugin.call(this, name, required, version)
		};
	};

})();

/*:
 * @plugindesc v1.01 - Setup skill that consume ammunition.
 * @author Victor Sant
 *
 * @param Ammunition Category
 * @desc Name displayed for the ammuntion category on menu.
 * Default: Ammunition.    Leave blank to hide the option.
 * @default Ammunition
 *
 * @param Ammunition Display
 * @desc Show Ammunition amount on the side of the cost.
 * %1 ammuntion ammount.    Leave blank for no display.
 * @default : %1
 *
 * @help 
 * ==============================================================================
 *
 * ==============================================================================
 *  Require Ammunition (notetag for Weapons and Skills)
 * ------------------------------------------------------------------------------
 *  <require ammunition: type X[, X...][, equiped]>
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 *  The weapon or skill requires and consumes the ammunition listed.
 *    type : item type. weapon, armor or item.
 *    X    : id of the ammunition item. You can add as many you want.
 *    equiped : the ammunition must be equiped. Opitional.
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 *  Ex.:  <require ammunition: item 5>
 *        <require ammunition: weapon 5, 6>
 *        <require ammunition: armor 6, 7, 8, equiped>
 * ==============================================================================
 *
 * ==============================================================================
 *  Ignore Ammunition (notetag for Weapons and Skills)
 * ------------------------------------------------------------------------------
 *  <ignore ammunition: type X[, X...][, equiped]>
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 *  The weapon or skill will ignore ammunition requirements.
 *    type : item type. weapon, armor or item.
 *    X    : id of the ammunition item. You can add as many you want.
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 *  Ex.:  <ignore ammunition: item 5>
 *        <ignore ammunition: weapon 5, 6>
 *        <ignore ammunition: armor 6, 7, 8>
 * ==============================================================================
 *
 * ==============================================================================
 *  Custom Require Ammunition (notetag for Weapons and Skills)
 * ------------------------------------------------------------------------------
 *  <custom require ammunition: type[, equiped]>
 *   result = code
 *  </custom require ammunition>
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 *  The weapon or skill requires and consumes the ammunition listed.
 *    type : item type. weapon, armor or item.
 *    equiped : the ammunition must be equiped. Opitional.
 *    code : code that will return the id of the ammunition item.
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 *  Ex.:  <custom require ammunition: armor>
 *         if (a.actorId() === 1) {
 *             result = 5 ;
 *         } else {
 *             result = 6;
 *         }
 *        </custom require ammunition>
 * ==============================================================================
 *
 * ==============================================================================
 *  Custom Ignore Ammunition (notetag for Weapons and Skills)
 * ------------------------------------------------------------------------------
 *  <custom ignore ammunition: type>
 *   result = code
 *  </custom ignore ammunition>
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 *  The weapon or skill requires and consumes the ammunition listed.
 *    type : item type. weapon, armor or item.
 *    code : code that will return the id of the ammunition item.
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 *  Ex.:  <custom ignore ammunition: armor>
 *         if (a.actorId() === 1) {
 *             result = 5 ;
 *         } else {
 *             result = 6;
 *         }
 *        </custom ignore ammunition>
 * ==============================================================================
 *
 * ==============================================================================
 *  Ignore All Ammunition (notetag for Weapons and Skills)
 * ------------------------------------------------------------------------------
 *  <ignore all ammunition>
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 *  The weapon or skill will ignore any ammunition requirements.
 * ==============================================================================
 *
 * ==============================================================================
 *  No Ammunition Hide (notetag for Skills)
 * ------------------------------------------------------------------------------
 *  <no ammunition hide>
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 *  The weapon or skill will ignore any ammunition requirements.
 * ==============================================================================
 *
 * ==============================================================================
 *  Ammunition (notetag for Weapons, Armors and Items)
 * ------------------------------------------------------------------------------
 *  <ammunition>
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 *   Hide the skill display on the Skill Window if there is no avaiable 
 *   ammunition for that skill.
 * ==============================================================================
 *
 * ==============================================================================
 * Additional Information:
 * ==============================================================================
 * 
 *  The code uses the same values as the damage formula, so you can use "a" for
 *  the user, "v[x]" for variable and "item" for the item object. The 'result'
 *  must return a numeric value.
 *
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 * 
 *  - The Ammunition
 *  The ammunitions are created using weapons, armors or items on the database.
 *  You will need to have them available on the inventory to use the action.
 *  If the notetag includes the 'equipe' flag, then the armor or weapon must
 *  be also equiped to enable the use of the action.
 *
 *  When the actor use the action, he will consume a copy of the item on the
 *  inventory. For equiped items, if there are no copies on the inventory,
 *  the action will consume the one he have equiped.
 *
 *  By default, the 'ammunition items' are no different from normal items and are
 *  displayed on their original category on the inventory. To change that you can
 *  create a separate category on the database for the ammunitions with the 
 *  plugin paramater 'Ammunition Category'. Then add the <ammunition> tag on the
 *  items. This will make them to be displayed on the ammunition category.
 *
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 * 
 *  - Ignore Ammunition
 *  When a weapon requires an ammunition, *all* the actor skills will require
 *  the ammunition. 
 *  If you want actions to not require ammunition you will need to add the tag
 *  <ignore ammunition> with the matching ammunition or <ignore all ammunition>
 *  the on the skill.
 *  There is no shortcut for this. You will need to use the ignore tags on every
 *  skill you don't want to consume ammunitions.
 * 
 *  For weapons, the tag <ignore ammunition> and will ignore the ammunition cost
 *  for any skill that have an mathcing ammunition. The <ignore all ammunition> 
 *  will ignore any ammunition for every skill.
 * 
 *  Notice that the matching ammunition don't need to be the one available.
 *  For example, you have a skill with the tag <require ammunition: item 2, 3>
 *  and a weapon with the tag <ignore ammunition: item 2>. Even if the only
 *  ammunition available is item 3, the weapon will ignore the cost.
 *
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 * 
 *  - Ammunition Costs
 *  When an action have multiple ammunition costs, only one ammunition is
 *  consumed, the costs are checked in the order they are on the required tag.
 *  For example, if you have a tag <require ammunition: item 4, 5, 6> and have
 *  all items listed, first it will consume the item 4, and only when there is no
 *  item 4 left, it will consume the item 5. This also reflect on the ammunition
 *  display. It will show only the ammount of the ammunition that will be used.
 *
 *  For equipment, the copies of the item on the inventory will be consumed
 *  before the one that you have equiped. 
 *
 * ==============================================================================
 *
 * ==============================================================================
 *  Version History:
 * ------------------------------------------------------------------------------
 *  v 1.00 - 2016.03.12 > First release.
 *  v 1.01 - 2017.05.25 > Fixed issue with equiped ammunition requirement.
 * ============================================================================== 
 */
/*:ja
 * @plugindesc v1.01 弾薬を消費する武器やスキルを設定できます
 * @author Victor Sant
 *
 * @param Ammunition Category
 * @desc メニューの弾薬カテゴリに表示される名前
 * 非表示にするには無入力
 * @default 弾薬
 *
 * @param Ammunition Display
 * @desc コスト弾薬量の表示形式。非表示にするには無入力
 * %1:弾薬量
 * @default : %1
 *
 * @help
 * 翻訳:ムノクラ
 * https://fungamemake.com/
 * https://twitter.com/munokura/
 *
 * 元プラグイン:
 * https://victorenginescripts.wordpress.com/rpg-maker-mv/skill-ammunition/
 *
 *
 * ===========================================================================
 * 必要プラグイン
 * ===========================================================================
 *
 * このプラグインを使用するには、下記のプラグインが必要です。
 * - VE_BasicModule
 *
 *
 * ===========================================================================
 *  必要弾薬 (武器、スキルのメモタグ)
 * ---------------------------------------------------------------------------
 *  <require ammunition: type X[, X...][, equiped]>
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 *  武器やスキルは、記載されている弾薬を必要とし、消費します。
 *    type : 種別。 weapon / armor / item
 *    X    : 弾薬のアイテムID。複数を設定できます。
 *    equiped : 弾薬が装備されている必要があります。 任意項目
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 *  例 :  <require ammunition: item 5>
 *        <require ammunition: weapon 5, 6>
 *        <require ammunition: armor 6, 7, 8, equiped>
 * ===========================================================================
 *
 * ===========================================================================
 *  無視弾薬 (武器、スキルのメモタグ)
 * ---------------------------------------------------------------------------
 *  <ignore ammunition: type X[, X...][, equiped]>
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 *  武器やスキルは弾薬の要求を無視します。
 *    type : 種別。 weapon / armor / item
 *    X    : 弾薬のアイテムID。複数を設定できます。
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 *  例 :  <ignore ammunition: item 5>
 *        <ignore ammunition: weapon 5, 6>
 *        <ignore ammunition: armor 6, 7, 8>
 * ===========================================================================
 *
 * ===========================================================================
 *  カスタム必要弾薬 (武器、スキルのメモタグ)
 * ---------------------------------------------------------------------------
 *  <custom require ammunition: type[, equiped]>
 *   result = code
 *  </custom require ammunition>
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 *  武器やスキルは、記載されている弾薬を必要とし、消費します。
 *    type : 種別。 weapon / armor / item
 *    equiped : 弾薬が装備されている必要があります。 任意項目
 *    code : 弾薬のアイテムIDを返すコード
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 *  例 :  <custom require ammunition: armor>
 *         if (a.actorId() === 1) {
 *             result = 5 ;
 *         } else {
 *             result = 6;
 *         }
 *        </custom require ammunition>
 * ===========================================================================
 *
 * ===========================================================================
 *  カスタム無視弾薬 (武器、スキルのメモタグ)
 * ---------------------------------------------------------------------------
 *  <custom ignore ammunition: type>
 *   result = code
 *  </custom ignore ammunition>
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 *  武器やスキルは、記載されている弾薬を必要とし、消費します。
 *    type : 種別。 weapon / armor / item
 *    code : 弾薬のアイテムIDを返すコード
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 *  例 :  <custom ignore ammunition: armor>
 *         if (a.actorId() === 1) {
 *             result = 5 ;
 *         } else {
 *             result = 6;
 *         }
 *        </custom ignore ammunition>
 * ===========================================================================
 *
 * ===========================================================================
 *  全ての弾薬を無視 (武器、スキルのメモタグ)
 * ---------------------------------------------------------------------------
 *  <ignore all ammunition>
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 *  武器やスキルは必要な弾薬を無視します。
 * ===========================================================================
 *
 * ===========================================================================
 *  弾薬がない場合に非表示 (スキルのメモタグ)
 * ---------------------------------------------------------------------------
 *  <no ammunition hide>
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 * そのスキルに使用可能な弾薬がない場合、
 * スキルウィンドウのスキル表示を非表示にします。
 * ===========================================================================
 *
 * ===========================================================================
 *  弾薬 (武器、防具、アイテムのメモタグ)
 * ---------------------------------------------------------------------------
 *  <ammunition>
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 * 弾薬カテゴリに表示します。
 * ===========================================================================
 *
 * ===========================================================================
 * 追加情報
 * ===========================================================================
 *
 * コードではダメージ式と同じ値を使用しているので、使用者には'a'、
 * 変数には'v[x]'、アイテムオブジェクトには'item'を使用します。
 * 結果'は数値を返す必要があります。
 *
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 *
 *  - The Ammunition
 * 弾薬はデータベース上の武器、防具、アイテムを使って作成します。
 * アクションを使用するには、
 * インベントリ上でそれらを使用可能な状態にしておく必要があります。
 * メモタグに'equipe'フラグが含まれている場合、
 * アクションを使用するには防具や武器も装備されていなければなりません。
 *
 * アクターがそのアクションを使用すると、
 * インベントリにあるアイテムのコピーを消費します。
 * 装備されているアイテムについては、インベントリにコピーがない場合、
 * 装備しているアイテムのコピーを消費します。
 *
 * デフォルトでは、弾薬アイテムは通常のアイテムと何ら変わりなく、
 * インベントリ上の元のカテゴリに表示されます。
 * これを変更するには、
 * 'Ammunition Category'というプラグインのパラメーターを使って、
 * データベース上に弾薬の別のカテゴリを作成します。
 * そしてアイテムに<ammunition>タグを追加します。
 * これで弾薬カテゴリに表示されるようになります。
 *
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 *
 *  - Ignore Ammunition
 * 武器が弾薬を必要とする場合、全てのアクタースキルは弾薬を必要とします。
 * 弾薬を必要としないようにしたい場合、
 * <ignore ammunition>というタグを付けて弾薬を指定するか、
 * スキルに<ignore all ammunition>というタグを付ける必要があります。
 * これには近道はありません。
 * 弾薬を消費させたくないスキルには、
 * 全ての弾薬を無視するタグを使用する必要があります。
 *
 * 武器については、<ignore ammunition>というタグを付けて、
 * 算術弾薬を持っている全てのスキルの弾薬代を無視します。
 * <ignore all ammunition>は、全てのスキルの弾薬を無視します。
 *
 * 一致する弾薬は、使用可能なものである必要はないことに注意してください。
 * 例えば、<require ammunition: item 2, 3>というタグが付いたスキルと、
 * <ignore ammunition: item 2>というタグが付いた武器があるとします。
 * 入手可能な弾薬がアイテム3しかなくても、武器はコストを無視します。
 *
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 *
 *  - Ammunition Costs
 * アクションに複数の弾薬コストがある場合、1つの弾薬しか消費されない場合、
 * コストは必要なタグに記載されている順にチェックされます。
 * 例えば、<require ammunition: item 4, 5, 6>というタグがあり、
 * 全てのアイテムがリストアップされている場合、最初にアイテム4を消費し、
 * アイテム4が残っていない場合のみ、アイテム5を消費します。
 * 弾薬表示にも反映されます。
 * 使用される弾薬量だけが表示されます。
 *
 * 装備品の場合、インベントリにあるアイテムのコピーは、
 * 装備したものよりも先に消費されます。
 *
 * ===========================================================================
 *
 * ===========================================================================
 *  Version History:
 * ---------------------------------------------------------------------------
 *  v 1.00 - 2016.03.12 > First release.
 *  v 1.01 - 2017.05.25 > Fixed issue with equiped ammunition requirement.
 * ===========================================================================
 */

(function () {

	//=============================================================================
	// Parameters
	//=============================================================================

	if (Imported['VE - Basic Module']) {
		var parameters = VictorEngine.getPluginParameters();
		VictorEngine.Parameters = VictorEngine.Parameters || {};
		VictorEngine.Parameters.SkillAmmunition = {};
		VictorEngine.Parameters.SkillAmmunition.AmmunitionCategory = String(parameters["Ammunition Category"]).trim();
		VictorEngine.Parameters.SkillAmmunition.AmmunitionDisplay = String(parameters["Ammunition Display"]).trim();
	}

	//=============================================================================
	// VictorEngine
	//=============================================================================

	VictorEngine.SkillAmmunition.loadNotetagsValues = VictorEngine.loadNotetagsValues;
	VictorEngine.loadNotetagsValues = function (data, index) {
		VictorEngine.SkillAmmunition.loadNotetagsValues.call(this, data, index);
		if (this.objectSelection(index, ['skill', 'weapon'])) {
			VictorEngine.SkillAmmunition.loadNotes1(data);
		}
		if (this.objectSelection(index, ['armor'])) {
			VictorEngine.SkillAmmunition.loadNotes2(data);
		}
	};

	VictorEngine.SkillAmmunition.loadNotes1 = function (data) {
		data.skillAmmunition = data.skillAmmunition || {};
		data.skillAmmunition.require = data.skillAmmunition.require || {};
		data.skillAmmunition.ignore = data.skillAmmunition.ignore || {};
		this.processNotes(data);
	};

	VictorEngine.SkillAmmunition.loadNotes2 = function (data) {
		data.isAmmunition = !!data.note.match(/<ammunition>/gi);
	};

	VictorEngine.SkillAmmunition.processNotes = function (data, type) {
		var match;
		var part1 = '(require|ignore) ammunition[ ]*'
		var part2 = ':[ ]*(weapon|armor|item)[ ]*'
		var part3 = '(?:[ ]*,[ ]*(equiped))?[ ]*'
		var regex1 = new RegExp('<' + part1 + part2 + '((?:\\d+[ ]*,?[ ]*)+)' + part3 + '>', 'gi');
		var regex2 = VictorEngine.getNotesValues('custom ' + part1 + part2 + part3, 'custom ' + part1);
		while (match = regex1.exec(data.note)) {
			this.processValues(match, data, false);
		};
		while (match = regex2.exec(data.note)) {
			this.processValues(match, data, true);
		};
		data.skillAmmunition.ignoreAll = !!data.note.match(/<ignore all ammunition>/gi)
		data.skillAmmunition.noAmmoHide = !!data.note.match(/<no ammunition hide>/gi)
	};

	VictorEngine.SkillAmmunition.processValues = function (match, data, code) {
		var result = {};
		var require = match[1].toLowerCase();
		result.type = match[2].toLowerCase();
		result.list = code ? [] : match[3].match(/\d+/gi).map(function (id) {
			return Number(id)
		});
		result.code = code ? match[4].trim() : '';
		result.equiped = !!match[code ? 3 : 4];
		data.skillAmmunition[require] = result;
	};

	//=============================================================================
	// Game_Actor
	//=============================================================================

	VictorEngine.SkillAmmunition.canPaySkillCost = Game_Actor.prototype.canPaySkillCost;
	Game_Actor.prototype.canPaySkillCost = function (skill) {
		return VictorEngine.SkillAmmunition.canPaySkillCost.call(this, skill) && this.canPaySkillAmmunition(skill);
	};

	VictorEngine.SkillAmmunition.paySkillCost = Game_Actor.prototype.paySkillCost;
	Game_Actor.prototype.paySkillCost = function (skill) {
		VictorEngine.SkillAmmunition.paySkillCost.call(this, skill);
		this._payAmmunitionCost = skill;
	};

	VictorEngine.SkillAmmunition.performActionEnd = Game_Actor.prototype.performActionEnd;
	Game_Actor.prototype.performActionEnd = function () {
		VictorEngine.SkillAmmunition.performActionEnd.call(this)
		if (this._payAmmunitionCost) {
			this.payAmmunitionCost(this._payAmmunitionCost);
			this._payAmmunitionCost = null;
		}
	};

	Game_Actor.prototype.canPaySkillAmmunition = function (skill) {
		if (this.needsAmmunition(skill)) {
			return this.requiredAmmunition(skill) > 0;
		} else {
			return true;
		}
	};

	Game_Actor.prototype.needsAmmunition = function (skill) {
		var require = skill.skillAmmunition.require.list || skill.skillAmmunition.require.code;
		var ignore = this.ignoreAmmunitionWeapon(skill);
		var weapons = this.requireAmmunitionWeapon(skill).length > 0;
		return (require && !ignore) || (!require && weapons);
	};

	Game_Actor.prototype.requiredAmmunition = function (skill) {
		if (!skill.skillAmmunition.require.list) {
			var weapons = this.requireAmmunitionWeapon(skill);
			return this.getRequiredAmmunition(weapons);
		} else {
			return this.getRequiredAmmunition([skill]);
		}
	};

	Game_Actor.prototype.requireAmmunitionWeapon = function (skill) {
		return this.weapons().filter(function (weapon) {
			return weapon && weapon.skillAmmunition.require.list &&
				!this.checkIgnoredAmmunition(weapon, skill);
		}, this);
	};

	Game_Actor.prototype.ignoreAmmunitionWeapon = function (skill) {
		return this.weapons().some(function (weapon) {
			return this.checkIgnoredAmmunition(skill, weapon);
		}, this);
	};

	Game_Actor.prototype.checkIgnoredAmmunition = function (object1, object2) {
		var result = 0;
		var item = object1;
		var a = this;
		var v = $gameVariables._data;
		var code = object1.skillAmmunition.require.code || '';
		var list = object1.skillAmmunition.require.list || [];
		eval(code);
		if (result) {
			list.push(result);
		}
		var result = 0;
		var item = object2;
		var a = this;
		var v = $gameVariables._data;
		var code = object2.skillAmmunition.ignore.code || '';
		var ignore = object2.skillAmmunition.ignore.list || [];
		eval(code);
		if (result) {
			ignore.push(result);
		}
		if (object2.skillAmmunition.ignoreAll) {
			return true;
		}
		for (var i = 0; i < list.length; i++) {
			for (var j = 0; j < ignore.length; j++) {
				if (list[i] === ignore[j]) {
					return true;
				}
			};
		};
		return false;
	};

	Game_Actor.prototype.getRequiredAmmunition = function (items) {
		var object = this;
		return items.reduce(function (r, item) {
			return r.concat(object.getRequiredAmmunitionItemNumber(item) || []);
		}, [])[0] || 0;
	};

	Game_Actor.prototype.getRequiredAmmunitionItemNumber = function (item) {
		var object = this;
		var result = 0;
		var item = item;
		var a = this;
		var v = $gameVariables._data;
		var code = item.skillAmmunition.require.code || '';
		var list = item.skillAmmunition.require.list || [];
		var type = item.skillAmmunition.require.type || '';
		var equip = item.skillAmmunition.require.equiped;
		eval(code);
		if (result) {
			list.push(result);
		}
		return list.reduce(function (r, id) {
			return r.concat(object.requiredAmmunitionNumber(id, type, equip) || []);
		}, [])[0];
	};

	Game_Actor.prototype.requiredAmmunitionNumber = function (id, type, equip) {
		var item = this.ammunitionItem(id, type);
		var result = $gameParty.numItems(item);
		var equiped = item && this.isEquipped(item);
		return (equip && equiped) ? result + 1 : (equip && !equiped) ? 0 : result;
	};

	Game_Actor.prototype.payAmmunitionCost = function (skill) {
		if (this.needsAmmunition(skill)) {
			if (!skill.skillAmmunition.require.list) {
				var weapons = this.requireAmmunitionWeapon(skill);
				this.payAmmunitionItemCost(weapons[0]);
			} else {
				this.payAmmunitionItemCost(skill);
			}
		}
	};

	Game_Actor.prototype.payAmmunitionItemCost = function (item) {
		var result = 0;
		var item = item;
		var a = this;
		var v = $gameVariables._data;
		var code = item.skillAmmunition.require.code || '';
		var list = item.skillAmmunition.require.list || [];
		var type = item.skillAmmunition.require.type || '';
		var equip = item.skillAmmunition.require.equiped;
		eval(code);
		if (result) {
			list.push(result);
		}
		var id = list.filter(function (id) { return this.hasAmmunition(id, type, equip) }, this)[0];
		if (id) {
			var ammunition = this.ammunitionItem(id, type);
			if ($gameParty.hasItem(ammunition)) {
				$gameParty.gainItem(ammunition, -1);
			} else if (equip) {
				this.discardEquip(ammunition);
			}
		}
	};

	Game_Actor.prototype.hasAmmunition = function (id, type, equip) {
		var item = this.ammunitionItem(id, type);
		return (equip && this.isEquipped(item)) || (!equip && $gameParty.hasItem(item));
	};

	Game_Actor.prototype.ammunitionItem = function (id, type) {
		switch (type) {
			case 'weapon':
				return $dataWeapons[id];
			case 'armor':
				return $dataArmors[id];
			case 'item':
				return $dataItems[id];
			default:
				return null;
		}
	};

	//=============================================================================
	// Window_ItemCategory
	//=============================================================================


	VictorEngine.SkillAmmunition.maxCols = Window_ItemCategory.prototype.maxCols;
	Window_ItemCategory.prototype.maxCols = function () {
		var adjust = !!VictorEngine.Parameters.SkillAmmunition.AmmunitionCategory ? 1 : 0
		return VictorEngine.SkillAmmunition.maxCols.call(this) + adjust;
	};
	VictorEngine.SkillAmmunition.makeCommandList = Window_ItemCategory.prototype.makeCommandList;
	Window_ItemCategory.prototype.makeCommandList = function () {
		VictorEngine.SkillAmmunition.makeCommandList.call(this);
		var category = VictorEngine.Parameters.SkillAmmunition.AmmunitionCategory;
		if (category) {
			var index = 0
			for (var i = 0; i < this._list.length; i++) {
				if (this._list[i].symbol === 'keyItem') {
					index = i;
				}
			}
			var command = { name: category, symbol: 'ammunition', enabled: true, ext: null };
			if (index) {
				this._list.splice(index, 0, command);
			}
		}
	};

	//=============================================================================
	// Window_ItemCategory
	//=============================================================================

	VictorEngine.SkillAmmunition.includesItemList = Window_ItemList.prototype.includes;
	Window_ItemList.prototype.includes = function (item) {
		if (item && item.isAmmunition && VictorEngine.Parameters.SkillAmmunition.AmmunitionCategory) {
			return this._category === 'ammunition' ? true : false;
		} else {
			return VictorEngine.SkillAmmunition.includesItemList.call(this, item);
		}
	};

	//=============================================================================
	// Window_ActorCommand
	//=============================================================================

	VictorEngine.SkillAmmunition.drawItem = Window_ActorCommand.prototype.drawItem;
	Window_ActorCommand.prototype.drawItem = function (index) {
		VictorEngine.SkillAmmunition.drawItem.call(this, index);
		var display = VictorEngine.Parameters.SkillAmmunition.AmmunitionDisplay;
		if (display) {
			var actor = this._actor;
			var list = this._list[index];
			var rect = this.itemRectForText(index);
			if (list.symbol === 'attack') {
				var item = $dataSkills[actor.attackSkillId()];
			} else if (list.symbol === 'guard') {
				var item = $dataSkills[actor.guardSkillId()];
			} else if (list.symbol === 'direct skill') {
				var item = $dataSkills[list.ext];
			}
			if (item && actor.requiredAmmunition(item) && actor.canPaySkillAmmunition(item)) {
				var text = display.format(actor.requiredAmmunition(item));
				this.drawText(text, rect.x, rect.y, rect.width, 'right');
			}
		}
	};

	//=============================================================================
	// Window_SkillList
	//=============================================================================

	VictorEngine.SkillAmmunition.includesSkillList = Window_SkillList.prototype.includes;
	Window_SkillList.prototype.includes = function (item) {
		return VictorEngine.SkillAmmunition.includesSkillList.call(this, item) && this.includesAmmunition(item);
	};

	VictorEngine.SkillAmmunition.drawSkillCost = Window_SkillList.prototype.drawSkillCost;
	Window_SkillList.prototype.drawSkillCost = function (skill, x, y, width) {
		var display = VictorEngine.Parameters.SkillAmmunition.AmmunitionDisplay;
		if (display && this._actor.requiredAmmunition(skill) && this._actor.canPaySkillAmmunition(skill)) {
			this.drawSkillAmmunition(skill, x, y, width);
			x -= this._ammunitionWidth;
		}
		VictorEngine.SkillAmmunition.drawSkillCost.call(this, skill, x, y, width);
	};

	Window_SkillList.prototype.includesAmmunition = function (item) {
		if (this._actor && this._actor.needsAmmunition(item) && item.skillAmmunition.noAmmoHide) {
			return this._actor.requiredAmmunition(item) > 0;
		} else {
			return true;
		}
	};

	Window_SkillList.prototype.drawSkillAmmunition = function (skill, x, y, width) {
		var display = VictorEngine.Parameters.SkillAmmunition.AmmunitionDisplay;
		var text = display.format(this._actor.requiredAmmunition(skill));
		this.drawText(text, x, y, width, 'right');
		this._ammunitionWidth = this.textWidth(text) + 16;
	};

})();