//=============================================================================
// Yanfly Engine Plugins - Skill Core Extension - Skill Cost Items
// YEP_X_SkillCostItems.js
//=============================================================================

var Imported = Imported || {};
Imported.YEP_X_SkillCostItems = true;

var Yanfly = Yanfly || {};
Yanfly.SCI = Yanfly.SCI || {};
Yanfly.SCI.version = 1.03;

//=============================================================================
/*:
 * @plugindesc v1.03 技能消耗物品☁️
 * @author Yanfly Engine Plugins
 *
 * @param ---全局---
 * @default
 *
 * @param Cost Style
 * @text 费用样式
 * @desc How do you want the costs to appear?
 * 0 - None   1 - Amount Over Icon   2 - Amount Then Icon
 * @default 2
 *
 * @param Font Size
 * @text 字体大小
 * @desc Font size used for item costs.
 * Default: 28
 * @default 20
 *
 * @param Amount Format
 * @text 数量格式
 * @desc How do you wish to display the amount cost?
 * %1 - Need    %2 - Owned
 * @default ×%1
 *
 * @param Amount Y Buffer
 * @text Y缓冲区数量
 * @desc The Y Buffer amount used to display the cost.
 * @default 4
 *
 * @param ---计量表---
 * @default
 *
 * @param Gauge Color 1
 * @text 计量颜色1
 * @desc The text color used for item gauges.
 * @default 13
 *
 * @param Gauge Color 2
 * @text 计量颜色2
 * @desc The text color used for item gauges.
 * @default 5
 *
 * @param Display Name
 * @text 显示名称
 * @desc Display the Item Name by default for the gauge?
 * NO - false     YES - true
 * @default true
 *
 * @param Text Color
 * @text 文本颜色
 * @desc Text color of the gauge name displayed.
 * Default: 16
 * @default 16
 *
 * @help
 * ============================================================================
 * Introduction
 * ============================================================================
 *
 * 这个插件需要YEP_SkillCore，确保它在YEP_SkillCore下面
 *
 * 你可以设置技能消耗物品。物品消耗将会显示下次使用技能需要的物品图标
 * 和数量。物品消耗可以用这个插件来设置并且可以设置替代品
 *
 * ============================================================================
 * Notetags
 * ============================================================================
 *
 * 为了能够让技能消耗物品，你需要用下面的标签
 *
 * 技能注释:
 *   <Item x Cost: y>
 *   <Weapon x Cost: y>
 *   <Armor x Cost: y>
 *   设置消耗的物品、武器或者装备，需要数量为y。
 *   如果你使用了YEP_ItemCore，独立物品不可以被消耗。
 *   如果你使用了多个标签，技能需要消耗所有的东西
 *
 *   <Item Cost: x Potion>
 *   <Item Cost: x Sword>
 *   <Item Cost: x Feather Cap>
 *  如果你想要使用物品名字取代，你可以使用这个标签。
 *  技能需要x数量的物品。如果你有相同名字物品，优先使用ID最高的。
 *  如果你使用了YEP_ItemCore，独立物品不可以被消耗。
 * 如果你使用了多个标签，技能需要消耗所有的东西
 *
 * 技能, 武器, 防具, 状态注释:
 *   <Swap Gauge x: Item y>
 *   <Swap Gauge x: Weapon y>
 *   <Swap Gauge x: Armor y>
 *   显示队伍拥有物品数量的物品槽。优先按照下面顺序：
 *   武器、装备、状态、职业、敌人
 *
 *   <Swap Gauge x: Item Potion>
 *   <Swap Gauge x: Item Sword>
 *   <Swap Gauge x: Item Feather Cap>
 *   如果你想使用名字，可以用这个标签。显示队伍拥有物品数量的物品槽。
 *   如果你有重名物品，则优先用ID最高的。优先按照下面顺序：
 *  武器、装备、 状态、职业、敌人
 *
 * 主角, 技能, 武器, 防具, 状态注释:
 *   <Item x Cost: +y>
 *   <Item x Cost: -y>
 *   <Weapon x Cost: +y>
 *   <Weapon x Cost: -y>
 *   <Armor x Cost: +y>
 *   <Armor x Cost: -y>
 *   增加或者减少物品、武器或装备消耗。如果物品不被需要，则这个不会生效。
 *
 *   <Item Cost: +x Potion>
 *   <Item Cost: -x Sword>
 *   <Item Cost: +x Feather Cap>
 *   如果你想使用名字，则用这个标签。增加或者减少物品、武器或装备消耗。
 *   如果物品不被需要，则这个不会生效。
 * 如果你有重名物品，则优先用ID最高的。
 *
 *   <Item x Cost: y%>
 *   <Weapon x Cost: y%>
 *   <Armor x Cost: y%>
 *   改变物品、武器、装备消耗y%。如果物品不被需要，则不会生效。
 *
 *   <Item Cost: x% Potion>
 *   <Item Cost: x% Sword>
 *   <Item Cost: x% Feather Cap>
 *   如果你想使用名字，则用这个标签。改变物品、武器、装备消耗x%。
 *   如果物品不被需要，则这个不会生效。
 *   如果你有重名物品，则优先用ID最高的。
 *
 *   <Replace Type x Cost: Type y>
 *   类型可以是物品、武器或则装备。这个让你改变消耗用的类型。
 *   替代优先顺序是状态、武器、装备、职业，然后是角色
 *
 *   <Replace Potion Cost: Ether>
 *   <Replace Sword Cost: Dagger>
 *   <Replace Feather Cap Cost: Bandana>
 *   如果你想使用名字，则用这个标签。这个让你改变消耗用的类型。
 *   替代优先顺序是状态、武器、装备、职业，然后是角色。
 * 如果你有重名物品，则优先用ID最高的。
 *
 * Item, Weapon, Armor Notetags:
 *   <Item Gauge Color 1: x>
 *   <Item Gauge Color 2: x>
 *   如果物品有显示槽，可以改变显示槽颜色
 *
 *   <Item Gauge Text: x>
 *   如果物品有显示槽，可以改变显示槽文本
 *
 *   <Item Gauge Text Color: x>
 *   如果物品有显示槽，可以改变显示槽文本颜色
 *
 * ============================================================================
 * Lunatic Mode - Custom Item Costs
 * ============================================================================
 *
 * For those with a bit of JavaScript knowledge, you can create dynamic item
 * costs for your skills using the following notetags:
 *
 * Skill Notetags:
 *
 *   <Custom Type x Cost>
 *    cost = user.level;
 *   </Custom Type x Cost>
 *   Replace 'type' with either 'item', 'weapon', or 'armor' to change the type
 *   and x as the ID of that item type. The 'cost' variable determines how much
 *   of the required item type is needed as the cost.
 *
 *   <Custom Item Cost: name>
 *    cost = user.level;
 *   </Custom Item Cost: name>
 *   For those who prefer to use names instead, replace 'name' with the name of
 *   the item to be used as the cost. The 'cost' variable determines how much
 *   of the named item is needed as the cost. If you have multiple items in
 *   your database with the same name, priority will be given to the item with
 *   the highest ID in the order of items, weapons, and armors.
 *
 * ============================================================================
 * Changelog
 * ============================================================================
 *
 * Version 1.03:
 * - Lunatic Mode fail safes added.
 *
 * Version 1.02:
 * - Updated for RPG Maker MV version 1.1.0.
 *
 * Version 1.01:
 * - Fixed a bug that would display the wrong cost amount for multiple items.
 * - Shifted item icon cost 2 pixels down to match the skill icon Y level.
 *
 * Version 1.00:
 * - Finished Plugin!
 */
//=============================================================================

if (Imported.YEP_SkillCore) {
    //=============================================================================
    // Parameter Variables
    //=============================================================================

    Yanfly.Parameters = PluginManager.parameters("YEP_X_SkillCostItems");
    Yanfly.Param = Yanfly.Param || {};

    Yanfly.Param.SCICostStyle = Number(Yanfly.Parameters["Cost Style"]);
    Yanfly.Param.SCIFontSize = Number(Yanfly.Parameters["Font Size"]);
    Yanfly.Param.SCIAmountFmt = String(Yanfly.Parameters["Amount Format"]);
    Yanfly.Param.SCIYBuffer = Number(Yanfly.Parameters["Amount Y Buffer"]);

    Yanfly.Param.SCIGauge1 = Number(Yanfly.Parameters["Gauge Color 1"]);
    Yanfly.Param.SCIGauge2 = Number(Yanfly.Parameters["Gauge Color 2"]);
    Yanfly.Param.SCIDisplayName = eval(String(Yanfly.Parameters["Display Name"]));
    Yanfly.Param.SCIDisplayColor = Number(Yanfly.Parameters["Text Color"]);

    //=============================================================================
    // DataManager
    //=============================================================================

    Yanfly.SCI.DataManager_isDatabaseLoaded = DataManager.isDatabaseLoaded;
    DataManager.isDatabaseLoaded = function () {
        if (!Yanfly.SCI.DataManager_isDatabaseLoaded.call(this)) return false;
        if (!Yanfly._loaded_YEP_X_SkillCostItems) {
            this.processSCINotetagsI($dataItems);
            this.processSCINotetagsW($dataWeapons);
            this.processSCINotetagsA($dataArmors);
            this.processSCINotetags1($dataSkills);
            this.processSCINotetags2($dataActors);
            this.processSCINotetags2($dataClasses);
            this.processSCINotetags2($dataEnemies);
            this.processSCINotetags2($dataWeapons);
            this.processSCINotetags2($dataArmors);
            this.processSCINotetags2($dataStates);
            this.processSCINotetags3($dataItems);
            this.processSCINotetags3($dataWeapons);
            this.processSCINotetags3($dataArmors);
            Yanfly._loaded_YEP_X_SkillCostItems = true;
        }
        return true;
    };

    DataManager.processSCINotetagsI = function (group) {
        if (Yanfly.ItemIdRef) return;
        Yanfly.ItemIdRef = {};
        for (var n = 1; n < group.length; n++) {
            var obj = group[n];
            if (obj.name.length <= 0) continue;
            Yanfly.ItemIdRef[obj.name.toUpperCase()] = n;
        }
    };

    DataManager.processSCINotetagsW = function (group) {
        if (Yanfly.WeaponIdRef) return;
        Yanfly.WeaponIdRef = {};
        for (var n = 1; n < group.length; n++) {
            var obj = group[n];
            if (obj.name.length <= 0) continue;
            Yanfly.WeaponIdRef[obj.name.toUpperCase()] = n;
        }
    };

    DataManager.processSCINotetagsA = function (group) {
        if (Yanfly.ArmorIdRef) return;
        Yanfly.ArmorIdRef = {};
        for (var n = 1; n < group.length; n++) {
            var obj = group[n];
            if (obj.name.length <= 0) continue;
            Yanfly.ArmorIdRef[obj.name.toUpperCase()] = n;
        }
    };

    DataManager.processSCINotetags1 = function (group) {
        for (var n = 1; n < group.length; n++) {
            var obj = group[n];
            var notedata = obj.note.split(/[\r\n]+/);

            obj.useItemCost = [];
            obj.useWeaponCost = [];
            obj.useArmorCost = [];
            var evalMode = "none";
            var evalLine = "";

            for (var i = 0; i < notedata.length; i++) {
                var line = notedata[i];
                if (line.match(/<ITEM[ ](\d+)[ ]COST:[ ](\d+)>/i)) {
                    var item = $dataItems[parseInt(RegExp.$1)];
                    var cost = parseInt(RegExp.$2);
                    this.processSCIObjItemCost(obj, item, cost, "");
                } else if (line.match(/<WEAPON[ ](\d+)[ ]COST:[ ](\d+)>/i)) {
                    var item = $dataWeapons[parseInt(RegExp.$1)];
                    var cost = parseInt(RegExp.$2);
                    this.processSCIObjItemCost(obj, item, cost, "");
                } else if (line.match(/<ARMOR[ ](\d+)[ ]COST:[ ](\d+)>/i)) {
                    var item = $dataArmors[parseInt(RegExp.$1)];
                    var cost = parseInt(RegExp.$2);
                    this.processSCIObjItemCost(obj, item, cost, "");
                } else if (line.match(/<ITEM COST:[ ](\d+)[ ](.*)>/i)) {
                    var cost = parseInt(RegExp.$1);
                    var name = String(RegExp.$2).toUpperCase();
                    if (Yanfly.ItemIdRef[name]) {
                        var id = Yanfly.ItemIdRef[name];
                        var item = $dataItems[id];
                    } else if (Yanfly.WeaponIdRef[name]) {
                        var id = Yanfly.WeaponIdRef[name];
                        var item = $dataWeapons[id];
                    } else if (Yanfly.ArmorIdRef[name]) {
                        var id = Yanfly.ArmorIdRef[name];
                        var item = $dataArmors[id];
                    } else {
                        continue;
                    }
                    this.processSCIObjItemCost(obj, item, cost, "");
                } else if (line.match(/<CUSTOM ITEM[ ](\d+)[ ]COST>/i)) {
                    evalMode = "custom item cost";
                    evalLine = "";
                } else if (line.match(/<\/CUSTOM ITEM[ ](\d+)[ ]COST>/i)) {
                    var item = $dataItems[parseInt(RegExp.$1)];
                    this.processSCIObjItemCost(obj, item, 0, evalLine);
                    evalMode = "none";
                    evalLine = "";
                } else if (line.match(/<CUSTOM WEAPON[ ](\d+)[ ]COST>/i)) {
                    evalMode = "custom item cost";
                    evalLine = "";
                } else if (line.match(/<\/CUSTOM WEAPON[ ](\d+)[ ]COST>/i)) {
                    var item = $dataWeapons[parseInt(RegExp.$1)];
                    this.processSCIObjItemCost(obj, item, 0, evalLine);
                    evalMode = "none";
                    evalLine = "";
                } else if (line.match(/<CUSTOM ARMOR[ ](\d+)[ ]COST>/i)) {
                    evalMode = "custom item cost";
                    evalLine = "";
                } else if (line.match(/<\/CUSTOM ARMOR[ ](\d+)[ ]COST>/i)) {
                    var item = $dataArmors[parseInt(RegExp.$1)];
                    this.processSCIObjItemCost(obj, item, 0, evalLine);
                    evalMode = "none";
                    evalLine = "";
                } else if (line.match(/<CUSTOM ITEM COST:[ ](.*)>/i)) {
                    evalMode = "custom item cost";
                    evalLine = "";
                } else if (line.match(/<\/CUSTOM ITEM COST:[ ](.*)>/i)) {
                    var name = String(RegExp.$1).toUpperCase();
                    if (Yanfly.ItemIdRef[name]) {
                        var id = Yanfly.ItemIdRef[name];
                        var item = $dataItems[id];
                    } else if (Yanfly.WeaponIdRef[name]) {
                        var id = Yanfly.WeaponIdRef[name];
                        var item = $dataWeapons[id];
                    } else if (Yanfly.ArmorIdRef[name]) {
                        var id = Yanfly.ArmorIdRef[name];
                        var item = $dataArmors[id];
                    } else {
                        evalMode = "none";
                        evalLine = "";
                        continue;
                    }
                    this.processSCIObjItemCost(obj, item, 0, evalLine);
                    evalMode = "none";
                    evalLine = "";
                } else if (evalMode === "custom item cost") {
                    evalLine = evalLine + line + "\n";
                }
            }
        }
    };

    DataManager.processSCIObjItemCost = function (obj, item, cost, code) {
        if (!item) return;
        if (Imported.YEP_ItemCore && this.isIndependent(item)) return;
        var arr = [item.id, cost, code];
        if (this.isItem(item)) {
            obj.useItemCost.push(arr);
        } else if (this.isWeapon(item)) {
            obj.useWeaponCost.push(arr);
        } else if (this.isArmor(item)) {
            obj.useArmorCost.push(arr);
        }
    };

    DataManager.processSCINotetags2 = function (group) {
        var note1 = /<(?:SWAP GAUGE|gauge)[ ](\d+):[ ](.*)>/i;
        var note2 = /<(?:SWAP GAUGE ICON|swap gauge icon)[ ](\d+):[ ](.*)>/i;
        var noteR1 = /<REPLACE[ ](.*)[ ](\d+)[ ]COST:[ ](.*)[ ](\d+)>/i;
        var noteR2 = /<REPLACE[ ](.*)[ ]COST:[ ](.*)>/i;
        for (var n = 1; n < group.length; n++) {
            var obj = group[n];
            var notedata = obj.note.split(/[\r\n]+/);

            obj.itemGaugeColor1 = Yanfly.Param.SCIGauge1;
            obj.itemGaugeColor2 = Yanfly.Param.SCIGauge2;
            obj.useItemCostSet = {};
            obj.useWeaponCostSet = {};
            obj.useArmorCostSet = {};
            obj.useItemCostRate = {};
            obj.useWeaponCostRate = {};
            obj.useArmorCostRate = {};
            obj.replaceItemCost = {};

            for (var i = 0; i < notedata.length; i++) {
                var line = notedata[i];
                if (line.match(note1)) {
                    var gauge = parseInt(RegExp.$1);
                    var text = String(RegExp.$2).toUpperCase();
                    if (text.match(/(?:ITEM|WEAPON|ARMOR)[ ](\d+)/i)) {
                        if (gauge === 1) obj.gauge1 = text;
                        if (gauge === 2) obj.gauge2 = text;
                        if (gauge === 3) obj.gauge3 = text;
                    } else if (text.match(/(?:ITEM|WEAPON|ARMOR)[ ](.*)/i)) {
                        var name = String(RegExp.$1).toUpperCase();
                        if (Yanfly.ItemIdRef[name]) {
                            var id = Yanfly.ItemIdRef[name];
                        } else if (Yanfly.WeaponIdRef[name]) {
                            var id = Yanfly.WeaponIdRef[name];
                        } else if (Yanfly.ArmorIdRef[name]) {
                            var id = Yanfly.ArmorIdRef[name];
                        }
                        var text = "ITEM " + id;
                        if (gauge === 1) obj.gauge1 = text;
                        if (gauge === 2) obj.gauge2 = text;
                        if (gauge === 3) obj.gauge3 = text;
                    }
                } else if (line.match(note2)) {
                    var gauge = parseInt(RegExp.$1);
                    var icon = parseInt(RegExp.$2);
                    if (gauge === 1) obj.gaugeIcon1 = icon;
                    if (gauge === 2) obj.gaugeIcon2 = icon;
                    if (gauge === 3) obj.gaugeIcon3 = icon;
                } else if (line.match(/<ITEM[ ](\d+)[ ]COST:[ ]([\+\-]\d+)>/i)) {
                    obj.useItemCostSet[parseInt(RegExp.$1)] = parseInt(RegExp.$2);
                } else if (line.match(/<WEAPON[ ](\d+)[ ]COST:[ ]([\+\-]\d+)>/i)) {
                    obj.useWeaponCostSet[parseInt(RegExp.$1)] = parseInt(RegExp.$2);
                } else if (line.match(/<ARMOR[ ](\d+)[ ]COST:[ ]([\+\-]\d+)>/i)) {
                    obj.useArmorCostSet[parseInt(RegExp.$1)] = parseInt(RegExp.$2);
                } else if (line.match(/<ITEM[ ](\d+)[ ]COST:[ ](\d+)([%％])>/i)) {
                    var value = parseFloat(RegExp.$2) * 0.01;
                    obj.useItemCostRate[parseInt(RegExp.$1)] = value;
                } else if (line.match(/<WEAPON[ ](\d+)[ ]COST:[ ](\d+)([%％])>/i)) {
                    var value = parseFloat(RegExp.$2) * 0.01;
                    obj.useWeaponCostRate[parseInt(RegExp.$1)] = value;
                } else if (line.match(/<ARMOR[ ](\d+)[ ]COST:[ ](\d+)([%％])>/i)) {
                    var value = parseFloat(RegExp.$2) * 0.01;
                    obj.useArmorCostRate[parseInt(RegExp.$1)] = value;
                } else if (line.match(/<ITEM COST:[ ]([\+\-]\d+)[ ](.*)>/i)) {
                    var value = parseInt(RegExp.$1);
                    var name = String(RegExp.$2).toUpperCase();
                    if (Yanfly.ItemIdRef[name]) {
                        var id = Yanfly.ItemIdRef[name];
                        obj.useItemCostSet[id] = value;
                    } else if (Yanfly.WeaponIdRef[name]) {
                        var id = Yanfly.WeaponIdRef[name];
                        obj.useWeaponCostSet[id] = value;
                    } else if (Yanfly.ArmorIdRef[name]) {
                        var id = Yanfly.ArmorIdRef[name];
                        obj.useArmorCostSet[id] = value;
                    }
                } else if (line.match(/<ITEM COST:[ ](\d+)([%％])[ ](.*)>/i)) {
                    var value = parseFloat(RegExp.$1) * 0.01;
                    var name = String(RegExp.$3).toUpperCase();
                    if (Yanfly.ItemIdRef[name]) {
                        var id = Yanfly.ItemIdRef[name];
                        obj.useItemCostRate[id] = value;
                    } else if (Yanfly.WeaponIdRef[name]) {
                        var id = Yanfly.WeaponIdRef[name];
                        obj.useWeaponCostRate[id] = value;
                    } else if (Yanfly.ArmorIdRef[name]) {
                        var id = Yanfly.ArmorIdRef[name];
                        obj.useArmorCostRate[id] = value;
                    }
                } else if (line.match(noteR1)) {
                    var type1 = String(RegExp.$1).toUpperCase();
                    var id1 = parseInt(RegExp.$2);
                    var type2 = String(RegExp.$3).toUpperCase();
                    var id2 = parseInt(RegExp.$4);
                    if (!["ITEM", "WEAPON", "ARMOR"].contains(type1)) continue;
                    if (!["ITEM", "WEAPON", "ARMOR"].contains(type2)) continue;
                    obj.replaceItemCost[type1 + " " + id1] = type2 + " " + id2;
                } else if (line.match(noteR2)) {
                    var name1 = String(RegExp.$1).toUpperCase();
                    var name2 = String(RegExp.$2).toUpperCase();
                    if (Yanfly.ItemIdRef[name1]) {
                        var id = Yanfly.ItemIdRef[name1];
                        var type1 = "ITEM " + id;
                    } else if (Yanfly.WeaponIdRef[name1]) {
                        var id = Yanfly.WeaponIdRef[name1];
                        var type1 = "WEAPON " + id;
                    } else if (Yanfly.ArmorIdRef[name1]) {
                        var id = Yanfly.ArmorIdRef[name1];
                        var type1 = "ARMOR " + id;
                    } else {
                        continue;
                    }
                    if (Yanfly.ItemIdRef[name2]) {
                        var id = Yanfly.ItemIdRef[name2];
                        var type2 = "ITEM " + id;
                    } else if (Yanfly.WeaponIdRef[name2]) {
                        var id = Yanfly.WeaponIdRef[name2];
                        var type2 = "WEAPON " + id;
                    } else if (Yanfly.ArmorIdRef[name2]) {
                        var id = Yanfly.ArmorIdRef[name2];
                        var type2 = "ARMOR " + id;
                    } else {
                        continue;
                    }
                    obj.replaceItemCost[type1] = type2;
                }
            }
        }
    };

    DataManager.processSCINotetags3 = function (group) {
        for (var n = 1; n < group.length; n++) {
            var obj = group[n];
            var notedata = obj.note.split(/[\r\n]+/);

            obj.itemGaugeColor1 = Yanfly.Param.SCIGauge1;
            obj.itemGaugeColor2 = Yanfly.Param.SCIGauge2;
            obj.itemGaugeText = Yanfly.Param.SCIDisplayName ? obj.name : "";
            obj.itemGaugeTextColor = Yanfly.Param.SCIDisplayColor;

            for (var i = 0; i < notedata.length; i++) {
                var line = notedata[i];
                if (line.match(/<(?:ITEM GAUGE COLOR 1):[ ](\d+)>/i)) {
                    obj.itemGaugeColor1 = parseInt(RegExp.$1);
                } else if (line.match(/<(?:ITEM GAUGE COLOR 2):[ ](\d+)>/i)) {
                    obj.itemGaugeColor2 = parseInt(RegExp.$1);
                } else if (line.match(/<(?:ITEM GAUGE TEXT):[ ](.*)>/i)) {
                    obj.itemGaugeText = String(RegExp.$1);
                } else if (line.match(/<(?:ITEM GAUGE TEXT COLOR):[ ](\d+)>/i)) {
                    obj.itemGaugeTextColor = parseInt(RegExp.$1);
                }
            }
        }
    };

    //=============================================================================
    // Game_BattlerBase
    //=============================================================================

    Yanfly.SCI.Game_BattlerBase_canPaySkillCost = Game_BattlerBase.prototype.canPaySkillCost;
    Game_BattlerBase.prototype.canPaySkillCost = function (skill) {
        if (!this.canPaySkillItemCost(skill)) return;
        return Yanfly.SCI.Game_BattlerBase_canPaySkillCost.call(this, skill);
    };

    Game_BattlerBase.prototype.canPaySkillItemCost = function (skill) {
        return true;
    };

    Game_BattlerBase.prototype.skillItemCost = function (skill) {
        return [];
    };

    Game_BattlerBase.prototype.combineSkillItemCostEntries = function (array) {
        var objData = [];
        var amtData = [];
        for (var i = 0; i < array.length; ++i) {
            var obj = array[i][0];
            var amt = array[i][1];
            if (objData.contains(obj)) {
                var index = objData.indexOf(obj);
                amtData[index] += amt;
                amtData[index] = Math.floor(amtData[index]);
                amtData[index] = Math.max(0, amtData[index]);
            } else {
                objData.push(obj);
                amtData.push(amt);
            }
        }
        var data = [];
        for (var i = 0; i < objData.length; ++i) {
            data.push([objData[i], amtData[i]]);
        }
        return data;
    };

    Game_BattlerBase.prototype.extractSkillItemCost = function (array, type) {
        var data = [];
        var max = array.length;
        for (var i = 0; i < max; ++i) {
            var id = array[i][0];
            var cost = array[i][1];
            var code = array[i][2];
            if (type === 0) {
                var item = $dataItems[id];
            } else if (type === 1) {
                var item = $dataWeapons[id];
            } else if (type === 2) {
                var item = $dataArmors[id];
            } else {
                continue;
            }
            if (!item) continue;

            cost = this.applySkillItemCostEval(item, cost, code);
            cost = this.applySkillItemCostModifier(item, cost);
            item = this.applySkillItemReplace(item);
            data.push([item, cost]);
        }
        return data;
    };

    Game_BattlerBase.prototype.applySkillItemCostEval = function (item, cost, code) {
        if (code === "") return cost;
        var a = this;
        var user = this;
        var subject = this;
        var s = $gameSwitches._data;
        var v = $gameVariables._data;
        try {
            eval(code);
        } catch (e) {
            Yanfly.Util.displayError(e, code, "APPLY SKILL ITEM COST ERROR");
        }
        return cost;
    };

    Game_BattlerBase.prototype.applySkillItemCostModifier = function (item, cost) {
        cost *= this.getSkillItemCostRate(item);
        cost += this.getSkillItemCostSet(item);
        return Math.floor(Math.max(0, cost));
    };

    Game_BattlerBase.prototype.getSkillItemCostRate = function (item) {
        var rate = 1;
        var max = this.states().length;
        for (var i = 0; i < max; ++i) {
            var state = this.states()[i];
            if (!state) continue;
            rate *= this.getSkillItemCostObjRate(item, state);
        }
        return rate;
    };

    Game_BattlerBase.prototype.getSkillItemCostObjRate = function (item, obj) {
        if (!item) return 1;
        if (!obj) return 1;
        if (DataManager.isItem(item) && obj.useItemCostRate) {
            return obj.useItemCostRate[item.id] || 1;
        } else if (DataManager.isWeapon(item) && obj.useWeaponCostRate) {
            return obj.useWeaponCostRate[item.id] || 1;
        } else if (DataManager.isArmor(item) && obj.useArmorCostRate) {
            return obj.useArmorCostRate[item.id] || 1;
        }
        return 1;
    };

    Game_BattlerBase.prototype.getSkillItemCostSet = function (item) {
        var bonus = 0;
        var max = this.states().length;
        for (var i = 0; i < max; ++i) {
            var state = this.states()[i];
            if (!state) continue;
            bonus += this.getSkillItemCostObjSet(item, state);
        }
        return bonus;
    };

    Game_BattlerBase.prototype.getSkillItemCostObjSet = function (item, obj) {
        if (!item) return 0;
        if (!obj) return 0;
        if (DataManager.isItem(item) && obj.useItemCostSet) {
            return obj.useItemCostSet[item.id] || 0;
        } else if (DataManager.isWeapon(item) && obj.useWeaponCostSet) {
            return obj.useWeaponCostSet[item.id] || 0;
        } else if (DataManager.isArmor(item) && obj.useArmorCostSet) {
            return obj.useArmorCostSet[item.id] || 0;
        }
        return 0;
    };

    Yanfly.SCI.Game_BattlerBase_paySkillCost = Game_BattlerBase.prototype.paySkillCost;
    Game_BattlerBase.prototype.paySkillCost = function (skill) {
        Yanfly.SCI.Game_BattlerBase_paySkillCost.call(this, skill);
        this.paySkillItemCost(skill);
    };

    Game_BattlerBase.prototype.paySkillItemCost = function (skill) {
        var array = this.skillItemCost(skill);
        var max = array.length;
        for (var i = 0; i < max; ++i) {
            var item = array[i][0];
            var cost = array[i][1];
            this.payIndividualSkillItemCost(item, cost);
        }
    };

    Game_BattlerBase.prototype.payIndividualSkillItemCost = function (item, cost) {};

    Game_BattlerBase.prototype.numItems = function (item) {
        return $gameParty.maxItems(item);
    };

    Game_BattlerBase.prototype.maxItems = function (item) {
        return $gameParty.maxItems(item);
    };

    Game_BattlerBase.prototype.applySkillItemReplace = function (item) {
        var type = "";
        if (DataManager.isItem(item)) type = "ITEM " + item.id;
        if (DataManager.isWeapon(item)) type = "WEAPON " + item.id;
        if (DataManager.isArmor(item)) type = "ARMOR " + item.id;
        var substitute = this.makeSkillItemReplace(type);
        return substitute || item;
    };

    Game_BattlerBase.prototype.makeSkillItemReplace = function (type) {
        var max = this.states().length;
        for (var i = 0; i < max; ++i) {
            var state = this.states()[i];
            if (state && this.hasSkillItemReplace(state, type)) {
                return this.getSkillItemReplace(state, type);
            }
        }
        return null;
    };

    Game_BattlerBase.prototype.hasSkillItemReplace = function (obj, type) {
        if (obj.replaceItemCost) {
            return obj.replaceItemCost[type];
        }
        return false;
    };

    Game_BattlerBase.prototype.getSkillItemReplace = function (obj, type) {
        if (obj.replaceItemCost) {
            var text = obj.replaceItemCost[type];
            if (text.match(/ITEM[ ](\d+)/i)) {
                return $dataItems[parseInt(RegExp.$1)];
            } else if (text.match(/WEAPON[ ](\d+)/i)) {
                return $dataWeapons[parseInt(RegExp.$1)];
            } else if (text.match(/ARMOR[ ](\d+)/i)) {
                return $dataArmors[parseInt(RegExp.$1)];
            }
        }
        return null;
    };

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

    Game_Actor.prototype.canPaySkillItemCost = function (skill) {
        var array = this.skillItemCost(skill);
        var max = array.length;
        for (var i = 0; i < max; ++i) {
            var item = array[i][0];
            var cost = array[i][1];
            if (this.numItems(item) < cost) return false;
        }
        return Game_BattlerBase.prototype.canPaySkillItemCost.call(this, skill);
    };

    Game_Actor.prototype.skillItemCost = function (skill) {
        var array = Game_BattlerBase.prototype.skillItemCost.call(this, skill);
        array = array.concat(this.extractSkillItemCost(skill.useItemCost, 0));
        array = array.concat(this.extractSkillItemCost(skill.useWeaponCost, 1));
        array = array.concat(this.extractSkillItemCost(skill.useArmorCost, 2));
        array = this.combineSkillItemCostEntries(array);
        return array;
    };

    Game_Actor.prototype.payIndividualSkillItemCost = function (item, cost) {
        $gameParty.loseItem(item, cost, false);
    };

    Game_Actor.prototype.numItems = function (item) {
        return $gameParty.numItems(item);
    };

    Game_Actor.prototype.maxItems = function (item) {
        return $gameParty.maxItems(item);
    };

    Game_Actor.prototype.getSkillItemCostRate = function (item) {
        var rate = Game_Battler.prototype.getSkillItemCostRate.call(this, item);
        rate *= this.getSkillItemCostObjRate(item, this.actor());
        rate *= this.getSkillItemCostObjRate(item, this.currentClass());
        var max = this.equips().length;
        for (var i = 0; i < max; ++i) {
            var equip = this.equips()[i];
            if (!equip) continue;
            rate *= this.getSkillItemCostObjRate(item, equip);
        }
        return rate;
    };

    Game_Actor.prototype.getSkillItemCostSet = function (item) {
        var bonus = Game_Battler.prototype.getSkillItemCostSet.call(this, item);
        bonus += this.getSkillItemCostObjSet(item, this.actor());
        bonus += this.getSkillItemCostObjSet(item, this.currentClass());
        var max = this.equips().length;
        for (var i = 0; i < max; ++i) {
            var equip = this.equips()[i];
            if (!equip) continue;
            bonus += this.getSkillItemCostObjSet(item, equip);
        }
        return bonus;
    };

    Game_Actor.prototype.makeSkillItemReplace = function (type) {
        var state = Game_Battler.prototype.makeSkillItemReplace.call(this, type);
        if (state) return state;
        var max = this.equips().length;
        for (var i = 0; i < max; ++i) {
            var equip = this.equips()[i];
            if (equip && this.hasSkillItemReplace(equip, type)) {
                return this.getSkillItemReplace(equip, type);
            }
        }
        if (this.hasSkillItemReplace(this.currentClass(), type)) {
            return this.getSkillItemReplace(this.currentClass(), type);
        }
        if (this.hasSkillItemReplace(this.actor(), type)) {
            return this.getSkillItemReplace(this.actor(), type);
        }
        return null;
    };

    //=============================================================================
    // Window_Base
    //=============================================================================

    Yanfly.SCI.Window_Base_drawActorHp = Window_Base.prototype.drawActorHp;
    Window_Base.prototype.drawActorHp = function (actor, x, y, width) {
        if (actor.gauge1().match(/(?:ITEM|WEAPON|ARMOR)[ ](\d+)/i)) {
            this.drawItemGaugeSwap(actor, 1, x, y, width);
        } else {
            Yanfly.SCI.Window_Base_drawActorHp.call(this, actor, x, y, width);
        }
    };

    Yanfly.SCI.Window_Base_drawActorMp = Window_Base.prototype.drawActorMp;
    Window_Base.prototype.drawActorMp = function (actor, x, y, width) {
        if (actor.gauge2().match(/(?:ITEM|WEAPON|ARMOR)[ ](\d+)/i)) {
            this.drawItemGaugeSwap(actor, 2, x, y, width);
        } else {
            Yanfly.SCI.Window_Base_drawActorMp.call(this, actor, x, y, width);
        }
    };

    Yanfly.SCI.Window_Base_drawActorTp = Window_Base.prototype.drawActorTp;
    Window_Base.prototype.drawActorTp = function (actor, x, y, width) {
        if (actor.gauge3().match(/(?:ITEM|WEAPON|ARMOR)[ ](\d+)/i)) {
            this.drawItemGaugeSwap(actor, 3, x, y, width);
        } else {
            Yanfly.SCI.Window_Base_drawActorTp.call(this, actor, x, y, width);
        }
    };

    Window_Base.prototype.drawItemGaugeSwap = function (actor, id, wx, wy, ww) {
        ww = ww || 186;
        if (id === 1) text = actor.gauge1();
        if (id === 2) text = actor.gauge2();
        if (id === 3) text = actor.gauge3();
        if (text.match(/ITEM[ ](\d+)/i)) {
            var item = $dataItems[parseInt(RegExp.$1)];
        } else if (text.match(/WEAPON[ ](\d+)/i)) {
            var item = $dataWeapons[parseInt(RegExp.$1)];
        } else if (text.match(/ARMOR[ ](\d+)/i)) {
            var item = $dataArmors[parseInt(RegExp.$1)];
        }
        var icon = item.iconIndex;
        if (id === 1 && actor.gaugeIcon1() > 0) icon = actor.gaugeIcon1();
        if (id === 2 && actor.gaugeIcon2() > 0) icon = actor.gaugeIcon2();
        if (id === 3 && actor.gaugeIcon3() > 0) icon = actor.gaugeIcon3();
        this.drawItemGaugeMain(actor, item, wx, wy, ww);
        var iw = this.drawItemGaugeIcon(icon, wx, wy);
        wx += iw;
        ww -= iw;
        var size = this.contents.fontSize;
        this.drawItemGaugeName(actor, item, wx, wy, ww);
        this.contents.fontSize = size;
        var cur = actor.numItems(item);
        var max = actor.maxItems(item);
        var color = this.normalColor();
        this.drawCurrentAndMax(cur, max, wx, wy, ww, color, color);
    };

    Window_Base.prototype.drawItemGaugeName = function (actor, item, wx, wy, ww) {
        ww -= this.textWidth(Yanfly.Util.toGroup(actor.numItems(item)));
        ww -= this.textWidth(Yanfly.Util.toGroup(actor.maxItems(item)));
        ww -= this.textWidth("/");
        var text = item.itemGaugeText;
        for (;;) {
            var nameWidth = this.textWidth(text);
            if (nameWidth > ww) {
                this.contents.fontSize -= 1;
            } else {
                break;
            }
            if (this.contents.fontSize < 1) break;
        }
        this.changeTextColor(this.textColor(item.itemGaugeTextColor));
        this.drawText(text, wx, wy, ww);
    };

    Window_Base.prototype.drawItemGaugeMain = function (actor, item, wx, wy, ww) {
        var color1 = this.textColor(item.itemGaugeColor1);
        var color2 = this.textColor(item.itemGaugeColor2);
        var rate = actor.numItems(item) / actor.maxItems(item);
        this.drawGauge(wx, wy, ww, rate, color1, color2);
    };

    Window_Base.prototype.drawItemGaugeIcon = function (icon, wx, wy) {
        this.drawIcon(icon, wx, wy);
        return Window_Base._iconWidth + 4;
    };

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

    Yanfly.SCI.Window_SkillList_drawTpCost = Window_SkillList.prototype.drawTpCost;
    Window_SkillList.prototype.drawTpCost = function (skill, wx, wy, dw) {
        dw = this.drawSkillItemCost(skill, wx, wy, dw);
        return Yanfly.SCI.Window_SkillList_drawTpCost.call(this, skill, wx, wy, dw);
    };

    Window_SkillList.prototype.drawSkillItemCost = function (skill, wx, wy, dw) {
        if (Yanfly.Param.SCICostStyle === 0) return dw;
        var array = this._actor.skillItemCost(skill);
        var max = array.length;
        if (max <= 0) return dw;
        this.contents.fontSize = Yanfly.Param.SCIFontSize;
        dw -= 2;
        for (var i = 0; i < max; ++i) {
            var arr = array[max - i - 1];
            var item = arr[0];
            var cost = arr[1];
            dw = this.drawSoloItemCost(item, cost, wx, wy, dw);
        }
        var returnWidth = dw - Yanfly.Param.SCCCostPadding;
        this.resetFontSettings();
        return returnWidth;
    };

    Window_SkillList.prototype.drawSoloItemCost = function (item, cost, wx, wy, dw) {
        var x = wx + dw - Window_Base._iconWidth;
        this.drawIcon(item.iconIndex, x, wy + 2);
        var amt1 = Yanfly.Util.toGroup(cost);
        var amt2 = Yanfly.Util.toGroup(this._actor.numItems(item));
        var fmt = Yanfly.Param.SCIAmountFmt;
        var text = fmt.format(amt1, amt2);
        if (Yanfly.Param.SCICostStyle === 1) {
            var iconWidth = Window_Base._iconWidth + 4;
            this.drawText(text, wx, wy + Yanfly.Param.SCIYBuffer, dw, "right");
            dw -= Math.max(iconWidth, this.textWidth(text));
        } else if (Yanfly.Param.SCICostStyle === 2) {
            var iconWidth = Window_Base._iconWidth;
            dw -= iconWidth;
            this.drawText(text, wx, wy + Yanfly.Param.SCIYBuffer, dw, "right");
            dw -= this.textWidth(text);
        }
        return dw;
    };

    //=============================================================================
    // Utilities
    //=============================================================================

    Yanfly.Util = Yanfly.Util || {};

    if (!Yanfly.Util.toGroup) {
        Yanfly.Util.toGroup = function (inVal) {
            return inVal;
        };
    }

    Yanfly.Util.displayError = function (e, code, message) {
        console.log(message);
        console.log(code || "NON-EXISTENT");
        console.error(e);
        if (Utils.isNwjs() && Utils.isOptionValid("test")) {
            if (!require("nw.gui").Window.get().isDevToolsOpen()) {
                require("nw.gui").Window.get().showDevTools();
            }
        }
    };

    //=============================================================================
    // End of File
    //=============================================================================
}