From 415267fc25a8946bd86974c24707b06f5af8bce2 Mon Sep 17 00:00:00 2001
From: oc <ckcz123@126.com>
Date: Sun, 17 Mar 2019 01:33:40 +0800
Subject: [PATCH] Remove isset

---
 libs/actions.js      |  54 ++++++-------
 libs/core.js         |  14 ++--
 libs/enemys.js       |  25 +++---
 libs/events.js       | 103 ++++++++++++-------------
 libs/items.js        |  79 +++++++------------
 libs/loader.js       |  16 ++--
 libs/maps.js         | 179 +++++++++++++++++++++----------------------
 libs/utils.js        | 155 ++++++++++++++++---------------------
 project/functions.js | 116 ++++++++++++----------------
 9 files changed, 331 insertions(+), 410 deletions(-)

diff --git a/libs/actions.js b/libs/actions.js
index f08502e9..045cac89 100644
--- a/libs/actions.js
+++ b/libs/actions.js
@@ -92,7 +92,7 @@ actions.prototype.unregisterAction = function (action, name) {
 ////// 执行一个用户交互行为 //////
 actions.prototype.doRegisteredAction = function (action) {
     var actions = this.actions[action];
-    if (!core.isset(actions)) return false;
+    if (!actions) return false;
     for (var i = 0; i < actions.length; ++i) {
         if (actions[i].func.apply(this, Array.prototype.slice.call(arguments, 1)))
             return true;
@@ -118,7 +118,7 @@ actions.prototype.onkeyDown = function (e) {
 }
 
 actions.prototype._sys_onkeyDown = function (e) {
-    if (!core.isset(core.status.holdingKeys)) core.status.holdingKeys = [];
+    core.status.holdingKeys = core.status.holdingKeys || []
     var isArrow = {37: true, 38: true, 39: true, 40: true}[e.keyCode]
     if (isArrow && !core.status.lockControl) {
         for (var ii = 0; ii < core.status.holdingKeys.length; ii++) {
@@ -382,7 +382,7 @@ actions.prototype._sys_keyUp = function (keyCode, altKey) {
     if (!core.status.played)
         return true;
     this.actionsdata.onKeyUp(keyCode, altKey);
-    if (core.isset(core.status.automaticRoute) && core.status.automaticRoute.autoHeroMove) {
+    if (core.status.automaticRoute && core.status.automaticRoute.autoHeroMove) {
         core.stopAutomaticRoute();
     }
     core.stopHero();
@@ -712,7 +712,7 @@ actions.prototype._sys_keyDownCtrl = function () {
     }
     if (core.status.event.id == 'action' && core.status.event.data.type == 'sleep'
         && !core.status.event.data.current.noSkip) {
-        if (core.isset(core.timeout.sleepTimeout) && Object.keys(core.animateFrame.asyncId).length == 0) {
+        if (core.timeout.sleepTimeout && Object.keys(core.animateFrame.asyncId).length == 0) {
             clearTimeout(core.timeout.sleepTimeout);
             core.timeout.sleepTimeout = null;
             core.doAction();
@@ -747,7 +747,7 @@ actions.prototype._sys_longClick_lockControl = function (x, y) {
     // 长按可以跳过等待事件
     if (core.status.event.id == 'action' && core.status.event.data.type == 'sleep'
         && !core.status.event.data.current.noSkip) {
-        if (core.isset(core.timeout.sleepTimeout) && Object.keys(core.animateFrame.asyncId).length == 0) {
+        if (core.timeout.sleepTimeout && Object.keys(core.animateFrame.asyncId).length == 0) {
             clearTimeout(core.timeout.sleepTimeout);
             core.timeout.sleepTimeout = null;
             core.doAction();
@@ -824,9 +824,9 @@ actions.prototype._keyUpCenterFly = function (keycode) {
 
 ////// 点击确认框时 //////
 actions.prototype._clickConfirmBox = function (x, y) {
-    if ((x == 4 || x == 5) && y == 7 && core.isset(core.status.event.data.yes))
+    if ((x == 4 || x == 5) && y == 7 && core.status.event.data.yes)
         core.status.event.data.yes();
-    if ((x == 7 || x == 8) && y == 7 && core.isset(core.status.event.data.no))
+    if ((x == 7 || x == 8) && y == 7 && core.status.event.data.no)
         core.status.event.data.no();
 }
 
@@ -845,12 +845,12 @@ actions.prototype._keyUpConfirmBox = function (keycode) {
     }
 
     if (keycode == 13 || keycode == 32 || keycode == 67) {
-        if (core.status.event.selection == 0 && core.isset(core.status.event.data.yes)) {
+        if (core.status.event.selection == 0 && core.status.event.data.yes) {
             core.status.event.selection = null;
             core.status.event.data.yes();
             return;
         }
-        if (core.status.event.selection == 1 && core.isset(core.status.event.data.no)) {
+        if (core.status.event.selection == 1 && core.status.event.data.no) {
             core.status.event.selection = null;
             core.status.event.data.no();
             return;
@@ -948,7 +948,7 @@ actions.prototype._clickBook = function (x, y) {
     }
     // 怪物信息
     var data = core.status.event.data;
-    if (core.isset(data) && y < 12) {
+    if (data != null && y < 12) {
         var page = parseInt(data / 6);
         var index = 6 * page + parseInt(y / 2);
         core.ui.drawBook(index);
@@ -983,7 +983,7 @@ actions.prototype._keyUpBook = function (keycode) {
     }
     if (keycode == 13 || keycode == 32 || keycode == 67) {
         var data = core.status.event.data;
-        if (core.isset(data)) {
+        if (data != null) {
             this._clickBook(6, 2 * (data % 6));
         }
         return;
@@ -1018,7 +1018,7 @@ actions.prototype._keyDownFly = function (keycode) {
 }
 
 actions.prototype._getNextFlyFloor = function (delta, index) {
-    if (!core.isset(index)) index = core.status.event.data;
+    if (index == null) index = core.status.event.data;
     if (delta == 0) return index;
     var sign = Math.sign(delta);
     delta = Math.abs(delta);
@@ -1047,7 +1047,7 @@ actions.prototype._keyUpFly = function (keycode) {
 
 ////// 查看地图界面时的点击操作 //////
 actions.prototype._clickViewMaps = function (x, y) {
-    if (!core.isset(core.status.event.data)) {
+    if (core.status.event.data == null) {
         core.ui.drawMaps(core.floorIds.indexOf(core.status.floorId));
         return;
     }
@@ -1112,7 +1112,7 @@ actions.prototype._clickViewMaps = function (x, y) {
 
 ////// 查看地图界面时，按下某个键的操作 //////
 actions.prototype._keyDownViewMaps = function (keycode) {
-    if (!core.isset(core.status.event.data)) return;
+    if (core.status.event.data == null) return;
 
     var floorId = core.floorIds[core.status.event.data.index], mh = core.floors[floorId].height;
 
@@ -1127,7 +1127,7 @@ actions.prototype._keyDownViewMaps = function (keycode) {
 
 ////// 查看地图界面时，放开某个键的操作 //////
 actions.prototype._keyUpViewMaps = function (keycode) {
-    if (!core.isset(core.status.event.data)) {
+    if (core.status.event.data == null) {
         core.ui.drawMaps(core.floorIds.indexOf(core.status.floorId));
         return;
     }
@@ -1200,7 +1200,7 @@ actions.prototype._clickQuickShop = function (x, y) {
         var topIndex = 6 - parseInt(keys.length / 2);
         if (y >= topIndex && y < topIndex + keys.length) {
             var reason = core.events.canUseQuickShop(keys[y - topIndex]);
-            if (!core.flags.enableDisabledShop && core.isset(reason)) {
+            if (!core.flags.enableDisabledShop && reason) {
                 core.drawText(reason);
                 return;
             }
@@ -1302,7 +1302,7 @@ actions.prototype._clickToolboxIndex = function (index) {
 
 ////// 工具栏界面时，按下某个键的操作 //////
 actions.prototype._keyDownToolbox = function (keycode) {
-    if (!core.isset(core.status.event.data)) return;
+    if (core.status.event.data == null) return;
 
     var tools = Object.keys(core.status.hero.items.tools).sort();
     var constants = Object.keys(core.status.hero.items.constants).sort();
@@ -1399,7 +1399,7 @@ actions.prototype._keyUpToolbox = function (keycode) {
         core.ui.closePanel();
         return;
     }
-    if (!core.isset(core.status.event.data)) return;
+    if (core.status.event.data == null) return;
 
     if (keycode == 13 || keycode == 32 || keycode == 67) {
         this._clickToolboxIndex(core.status.event.selection);
@@ -1459,7 +1459,7 @@ actions.prototype._clickEquipbox = function (x, y) {
 actions.prototype._clickEquipboxIndex = function (index) {
     if (index < 6) {
         if (index >= core.status.globalAttribute.equipName.length) return;
-        if (index == core.status.event.selection && core.isset(core.status.hero.equipment[index])) {
+        if (index == core.status.event.selection && core.status.hero.equipment[index]) {
             core.unloadEquip(index);
             core.status.route.push("unEquip:" + index);
         }
@@ -1477,7 +1477,7 @@ actions.prototype._clickEquipboxIndex = function (index) {
 
 ////// 装备栏界面时，按下某个键的操作 //////
 actions.prototype._keyDownEquipbox = function (keycode) {
-    if (!core.isset(core.status.event.data)) return;
+    if (core.status.event.data != null) return;
 
     var equipCapacity = core.status.globalAttribute.equipName.length;
     var ownEquipment = Object.keys(core.status.hero.items.equips).sort();
@@ -1563,7 +1563,7 @@ actions.prototype._keyUpEquipbox = function (keycode, altKey) {
         core.ui.closePanel();
         return;
     }
-    if (!core.isset(core.status.event.data.selectId)) return;
+    if (!core.status.event.data.selectId) return;
 
     if (keycode == 13 || keycode == 32 || keycode == 67) {
         this._clickEquipboxIndex(core.status.event.selection);
@@ -1905,7 +1905,7 @@ actions.prototype._clickSyncSave = function (x, y) {
                         alert("游戏版本不一致！");
                         return;
                     }
-                    if (!core.isset(obj.data)) {
+                    if (!obj.data) {
                         alert("无效的存档！");
                         return;
                     }
@@ -2023,7 +2023,7 @@ actions.prototype._clickLocalSaveSelect = function (x, y) {
         var selection = y - topIndex;
         if (selection < 2) {
             core.control.getSaves(selection == 0 ? null : core.saves.saveIndex, function (saves) {
-                if (core.isset(saves)) {
+                if (saves) {
                     var content = {
                         "name": core.firstData.name,
                         "version": core.firstData.version,
@@ -2408,7 +2408,7 @@ actions.prototype.clearPaint = function () {
 actions.prototype.savePaint = function () {
     var data = {};
     for (var floorId in core.paint) {
-        if (core.isset(core.paint[floorId]))
+        if (core.paint[floorId])
             data[floorId] = lzw_decode(core.paint[floorId]);
     }
     core.download(core.firstData.name + ".h5paint", JSON.stringify({
@@ -2423,19 +2423,19 @@ actions.prototype.loadPaint = function () {
             alert("绘图文件和游戏不一致！");
             return;
         }
-        if (!core.isset(obj.paint)) {
+        if (!obj.paint) {
             alert("无效的绘图文件！");
             return;
         }
         core.paint = {};
         for (var floorId in obj.paint) {
-            if (core.isset(obj.paint[floorId]))
+            if (obj.paint[floorId])
                 core.paint[floorId] = lzw_encode(obj.paint[floorId]);
         }
 
         core.clearMap('paint');
         var value = core.paint[core.status.floorId];
-        if (core.isset(value)) value = lzw_decode(value).split(",");
+        if (value) value = lzw_decode(value).split(",");
         core.utils.decodeCanvas(value, 32 * core.bigmap.width, 32 * core.bigmap.height);
         core.drawImage('paint', core.bigmap.tempCanvas.canvas, 0, 0);
 
diff --git a/libs/core.js b/libs/core.js
index 01eb1390..b0a0072a 100644
--- a/libs/core.js
+++ b/libs/core.js
@@ -93,8 +93,8 @@ function core() {
         canvas: ["bg", "event", "event2", "fg", "damage"],
         offsetX: 0, // in pixel
         offsetY: 0,
-        width: 13, // map width and height
-        height: 13,
+        width: this.__SIZE__, // map width and height
+        height: this.__SIZE__,
         tempCanvas: null, // A temp canvas for drawing
     }
     this.paint = {};
@@ -229,7 +229,7 @@ core.prototype.init = function (coreData, callback) {
     if (!core.flags.enableLevelUp)
         core.flags.levelUpLeftMode = false;
 
-    if (core.isset(core.firstData.shops)) {
+    if (core.firstData.shops) {
         core.firstData.shops.forEach(function (t) {
             core.initStatus.shops[t.id] = t;
         })
@@ -274,7 +274,7 @@ core.prototype.init = function (coreData, callback) {
     }
 
     var chrome = /Chrome\/(\d+)\./i.exec(navigator.userAgent);
-    if (core.isset(chrome) && parseInt(chrome[1]) >= 50)
+    if (chrome && parseInt(chrome[1]) >= 50)
         core.platform.isChrome = true;
     core.platform.isSafari = /Safari/i.test(navigator.userAgent) && !/Chrome/i.test(navigator.userAgent);
     core.platform.isQQ = /QQ/i.test(navigator.userAgent);
@@ -327,7 +327,7 @@ core.prototype.init = function (coreData, callback) {
             core.readFileContent(core.platform.fileReader.result);
         };
         core.platform.fileReader.onerror = function () {
-            if (core.isset(core.platform.errorCallback))
+            if (core.platform.errorCallback)
                 core.platform.errorCallback();
         }
     }
@@ -379,7 +379,7 @@ core.prototype.init = function (coreData, callback) {
         if (main.mode == 'play')
             core.events.initGame();
 
-        if (core.isset(functions_d6ad677b_427a_4623_b50f_a445a3b0ef8a.plugins)) {
+        if (functions_d6ad677b_427a_4623_b50f_a445a3b0ef8a.plugins) {
             core.plugin = new function () {
                 this.__renderFrameFuncs = [];
             };
@@ -390,7 +390,7 @@ core.prototype.init = function (coreData, callback) {
 
         core.showStartAnimate();
 
-        if (core.isset(callback)) callback();
+        if (callback) callback();
 
     });
 }
diff --git a/libs/enemys.js b/libs/enemys.js
index 35d11e09..02554f28 100644
--- a/libs/enemys.js
+++ b/libs/enemys.js
@@ -24,7 +24,7 @@ enemys.prototype.getEnemys = function () {
 
 ////// 判断是否含有某特殊属性 //////
 enemys.prototype.hasSpecial = function (special, test) {
-    if (!core.isset(special)) return false;
+    if (special == null) return false;
 
     if (special instanceof Array) {
         return special.indexOf(test) >= 0;
@@ -38,7 +38,7 @@ enemys.prototype.hasSpecial = function (special, test) {
         return this.hasSpecial(core.material.enemys[special], test);
     }
 
-    if (core.isset(special.special)) {
+    if (special.special != null) {
         return this.hasSpecial(special.special, test);
     }
 
@@ -52,12 +52,12 @@ enemys.prototype.getSpecials = function () {
 ////// 获得所有特殊属性的名称 //////
 enemys.prototype.getSpecialText = function (enemy) {
     if (typeof enemy == 'string') enemy = core.material.enemys[enemy];
-    if (!core.isset(enemy)) return [];
+    if (!enemy) return [];
     var special = enemy.special;
     var text = [];
 
     var specials = this.getSpecials();
-    if (core.isset(specials)) {
+    if (specials) {
         for (var i = 0; i < specials.length; i++) {
             if (this.hasSpecial(special, specials[i][0]))
                 text.push(this._calSpecialContent(enemy, specials[i][1]));
@@ -70,8 +70,8 @@ enemys.prototype.getSpecialText = function (enemy) {
 enemys.prototype.getSpecialHint = function (enemy, special) {
     var specials = this.getSpecials();
 
-    if (!core.isset(special)) {
-        if (!core.isset(specials)) return [];
+    if (special == null) {
+        if (specials == null) return [];
         var hints = [];
         for (var i = 0; i < specials.length; i++) {
             if (this.hasSpecial(enemy, specials[i][0]))
@@ -80,7 +80,7 @@ enemys.prototype.getSpecialHint = function (enemy, special) {
         return hints;
     }
 
-    if (!core.isset(specials)) return "";
+    if (specials == null) return "";
     for (var i = 0; i < specials.length; i++) {
         if (special == specials[i][0])
             return this._calSpecialContent(enemy, specials[i][1]) + "：" + this._calSpecialContent(enemy, specials[i][2]);
@@ -304,8 +304,7 @@ enemys.prototype.getCurrentEnemys = function (floorId) {
     var enemys = [], used = {};
     var mapBlocks = core.status.maps[floorId].blocks;
     for (var b = 0; b < mapBlocks.length; b++) {
-        if (core.isset(mapBlocks[b].event) && !mapBlocks[b].disable
-            && mapBlocks[b].event.cls.indexOf('enemy') == 0) {
+        if (!mapBlocks[b].disable && mapBlocks[b].event.cls.indexOf('enemy') == 0) {
             this._getCurrentEnemys_addEnemy(mapBlocks[b].event.id, enemys, used, floorId);
         }
     }
@@ -314,14 +313,10 @@ enemys.prototype.getCurrentEnemys = function (floorId) {
 
 enemys.prototype._getCurrentEnemys_getEnemy = function (enemyId) {
     var enemy = core.material.enemys[enemyId];
-    if (!core.isset(enemy)) return null;
+    if (!enemy) return null;
 
     // 检查displayIdInBook
-    var tmpId = enemy.displayIdInBook;
-    if (core.isset(core.material.enemys[tmpId])) {
-        enemy = core.material.enemys[tmpId];
-    }
-    return enemy;
+    return core.material.enemys[enemy.displayIdInBook] || enemy;
 }
 
 enemys.prototype._getCurrentEnemys_addEnemy = function (enemyId, enemys, used, floorId) {
diff --git a/libs/events.js b/libs/events.js
index 4dae39cf..abd55412 100644
--- a/libs/events.js
+++ b/libs/events.js
@@ -27,7 +27,7 @@ events.prototype.startGame = function (hard, seed, route, callback) {
     if (main.mode != 'play') return;
 
     // 无动画的开始游戏
-    if (core.flags.startUsingCanvas || core.isset(route)) {
+    if (core.flags.startUsingCanvas || route != null) {
         core.dom.startPanel.style.display = 'none';
         this._startGame_start(hard, seed, route, callback);
     }
@@ -45,7 +45,7 @@ events.prototype._startGame_start = function (hard, seed, route, callback) {
     core.setHeroLoc('x', -1);
     core.setHeroLoc('y', -1);
 
-    if (core.isset(seed)) {
+    if (seed != null) {
         core.setFlag('__seed__', seed);
         core.setFlag('__rand__', seed);
     }
@@ -67,7 +67,7 @@ events.prototype._startGame_start = function (hard, seed, route, callback) {
         core.events._startGame_afterStart(nowLoc, callback);
     });
 
-    if (core.isset(route)) core.startReplay(route);
+    if (route != null) core.startReplay(route);
 }
 
 events.prototype._startGame_afterStart = function (nowLoc, callback) {
@@ -117,7 +117,7 @@ events.prototype.gameOver = function (ending, fromReplay, norank) {
     core.setWeather();
     core.ui.closePanel();
 
-    if (main.isCompetition && core.isset(ending)) {
+    if (main.isCompetition && ending != null) {
         if (ending == "") ending = "恭喜通关";
         ending += "[比赛]";
     }
@@ -136,7 +136,7 @@ events.prototype.gameOver = function (ending, fromReplay, norank) {
 events.prototype._gameOver_confirmUpload = function (ending, norank) {
     core.ui.closePanel();
 
-    if (!core.isset(ending)) {
+    if (ending == null) {
         this._gameOver_confirmDownload(ending);
         return;
     }
@@ -153,7 +153,7 @@ events.prototype._gameOver_confirmUpload = function (ending, norank) {
 
 events.prototype._gameOver_doUpload = function (username, ending, norank) {
     var hp = core.status.hero.hp;
-    if (!core.isset(username)) hp = 1;
+    if (username == null) hp = 1;
     core.ui.closePanel();
     // upload
     var formData = new FormData();
@@ -206,7 +206,7 @@ events.prototype._gameOver_confirmDownload = function (ending) {
 }
 
 events.prototype._gameOver_askRate = function (ending) {
-    if (!core.isset(ending)) {
+    if (ending == null) {
         core.restart();
         return;
     }
@@ -275,7 +275,7 @@ events.prototype._trigger = function (x, y) {
 
 events.prototype._trigger_ignoreChangeFloor = function (block) {
     var able = core.flags.ignoreChangeFloor;
-    if (core.isset(block.event.data) && core.isset(block.event.data.ignoreChangeFloor))
+    if (block.event.data && block.event.data.ignoreChangeFloor != null)
         able = block.event.data.ignoreChangeFloor;
     if (able) {
         if (core.isReplaying()) {
@@ -302,14 +302,14 @@ events.prototype._sys_battle = function (data, callback) {
 events.prototype.battle = function (id, x, y, force, callback) {
     core.saveAndStopAutomaticRoute();
     id = id || core.getBlockId(x, y);
-    if (!core.isset(id)) return core.clearContinueAutomaticRoute(callback);
+    if (!id) return core.clearContinueAutomaticRoute(callback);
     // 非强制战斗
-    if (!core.enemys.canBattle(id, x, y) && !force && !core.isset(core.status.event.id)) {
+    if (!core.enemys.canBattle(id, x, y) && !force && !core.status.event.id) {
         core.drawTip("你打不过此怪物！");
         return core.clearContinueAutomaticRoute(callback);
     }
     // 自动存档
-    if (!core.isset(core.status.event.id)) core.autosave(true);
+    if (!core.status.event.id) core.autosave(true);
     // 战前事件
     if (!this.beforeBattle(id, x, y))
         return core.clearContinueAutomaticRoute(callback);
@@ -344,7 +344,7 @@ events.prototype.openDoor = function (id, x, y, needKey, callback) {
 events.prototype._openDoor_check = function (id, x, y, needKey) {
     // 是否存在门或暗墙
     if (!core.terrainExists(x, y, id) || !(id.endsWith("Door") || id.endsWith("Wall"))
-        || !core.isset(core.material.icons.animates[id])) {
+        || !core.material.icons.animates[id]) {
         core.clearContinueAutomaticRoute();
         return false;
     }
@@ -428,10 +428,8 @@ events.prototype.getNextItem = function () {
 events.prototype._sys_changeFloor = function (data, callback) {
     data = data.event.data;
     var heroLoc = {};
-    if (core.isset(data.loc))
-        heroLoc = {'x': data.loc[0], 'y': data.loc[1]};
-    if (core.isset(data.direction))
-        heroLoc.direction = data.direction;
+    if (data.loc) heroLoc = {'x': data.loc[0], 'y': data.loc[1]};
+    if (data.direction) heroLoc.direction = data.direction;
     if (core.status.event.id != 'action') core.status.event.id = null;
     core.changeFloor(data.floorId, data.stair, heroLoc, data.time, callback);
 }
@@ -473,8 +471,8 @@ events.prototype._changeFloor_getInfo = function (floorId, stair, heroLoc, time)
     }
 
     if (main.mode != 'play' || core.isReplaying()) time = 0;
-    if (!core.isset(time)) time = core.values.floorChangeTime;
-    if (!core.isset(time)) time = 800;
+    if (time == null) time = core.values.floorChangeTime;
+    if (time == null) time = 800;
     if (time < 100) time = 0;
     time /= 20;
 
@@ -486,11 +484,11 @@ events.prototype._changeFloor_getInfo = function (floorId, stair, heroLoc, time)
 }
 
 events.prototype._changeFloor_getHeroLoc = function (floorId, stair, heroLoc) {
-    if (!core.isset(heroLoc))
+    if (!heroLoc)
         heroLoc = core.clone(core.status.hero.loc);
-    if (core.isset(stair)) {
+    if (stair) {
         // 检查该层地图的 upFloor & downFloor
-        if (core.isset(core.status.maps[floorId][stair])) {
+        if (core.status.maps[floorId][stair]) {
             heroLoc.x = core.status.maps[floorId][stair][0];
             heroLoc.y = core.status.maps[floorId][stair][1];
         }
@@ -506,7 +504,7 @@ events.prototype._changeFloor_getHeroLoc = function (floorId, stair, heroLoc) {
         }
     }
     ['x', 'y', 'direction'].forEach(function (name) {
-        if (!core.isset(heroLoc[name]))
+        if (!heroLoc[name])
             heroLoc[name] = core.getHeroLoc(name);
     });
     return heroLoc;
@@ -663,7 +661,7 @@ events.prototype._sys_ski = function (data, callback) {
 
 ////// 滑冰 //////
 events.prototype.ski = function (direction) {
-    if (!core.isset(direction))
+    if (!direction)
         direction = core.status.automaticRoute.lastDirection || core.getHeroLoc('direction');
     if (core.status.event.id != 'ski') {
         core.waitHeroToStop(function () {
@@ -688,7 +686,7 @@ events.prototype._sys_action = function (data, callback) {
     if (ex == core.nextX() && ey == core.nextY()) {
         var dir = {"up": "down", "down": "up", "left": "right", "right": "left"}[core.getHeroLoc('direction')];
         var id = data.event.id, toId = (data.event.faceIds || {})[dir];
-        if (core.isset(toId) && id != toId) {
+        if (toId && id != toId) {
             var number = core.icons.getNumberById(toId);
             if (number > 0)
                 core.setBlock(number, ex, ey);
@@ -724,7 +722,7 @@ events.prototype.doEvent = function (data, x, y, prefix) {
 
 ////// 开始执行一系列自定义事件 //////
 events.prototype.doEvents = function (list, x, y, callback) {
-    if (!core.isset(list)) return;
+    if (!list) return;
     if (!(list instanceof Array)) {
         list = [list];
     }
@@ -738,11 +736,11 @@ events.prototype.doEvents = function (list, x, y, callback) {
 
 events.prototype.setEvents = function (list, x, y, callback) {
     var data = core.status.event.data || {};
-    if (core.isset(list))
+    if (list)
         data.list = [{todo: core.clone(list), total: core.clone(list), condition: "false"}];
-    if (core.isset(x)) data.x = x;
-    if (core.isset(y)) data.y = y;
-    if (core.isset(callback)) data.callback = callback;
+    if (x != null) data.x = x;
+    if (y != null) data.y = y;
+    if (callback) data.callback = callback;
     core.status.event = {id: 'action', data: data};
 }
 
@@ -757,7 +755,7 @@ events.prototype.doAction = function () {
     if (this._doAction_finishEvents()) return;
     // 当前点坐标和前缀
     var x = core.status.event.data.x, y = core.status.event.data.y;
-    var prefix = [core.status.floorId || "f", core.isset(x) ? x : "x", core.isset(y) ? y : "y"].join("@");
+    var prefix = [core.status.floorId || "f", x != null ? x : "x", y != null ? y : "y"].join("@");
     var current = core.status.event.data.list[0];
     if (this._popEvents(current, prefix)) return;
     // 当前要执行的事件
@@ -775,8 +773,7 @@ events.prototype._doAction_finishEvents = function () {
     if (core.status.event.data.list.length == 0) {
         var callback = core.status.event.data.callback;
         core.ui.closePanel();
-        if (core.isset(callback))
-            callback();
+        if (callback) callback();
         core.replay();
         return true;
     }
@@ -804,7 +801,7 @@ events.prototype.insertAction = function (action, x, y, callback) {
     // ------ 判定commonEvent
     var commonEvent = this.getCommonEvent(action);
     if (commonEvent instanceof Array) action = commonEvent;
-    if (!core.isset(action)) return;
+    if (!action) return;
 
     if (core.status.event.id != 'action') {
         this.doEvents(action, x, y, callback);
@@ -817,13 +814,13 @@ events.prototype.insertAction = function (action, x, y, callback) {
 
 ////// 获得一个公共事件 //////
 events.prototype.getCommonEvent = function (name) {
-    if (!core.isset(name) || typeof name !== 'string') return null;
+    if (!name || typeof name !== 'string') return null;
     return this.commonEvent[name] || null;
 }
 
 ////// 恢复一个事件 //////
 events.prototype.recoverEvents = function (data) {
-    if (core.isset(data)) {
+    if (data) {
         core.ui.closePanel();
         core.lockControl();
         core.status.event.id = 'action';
@@ -897,16 +894,16 @@ events.prototype._action_comment = function (data, x, y, prefix) {
 
 events.prototype._action_setText = function (data, x, y, prefix) {
     ["position", "offset", "bold", "titlefont", "textfont", "time"].forEach(function (t) {
-        if (core.isset(data[t])) core.status.textAttribute[t] = data[t];
+        if (data[t] != null) core.status.textAttribute[t] = data[t];
     });
     ["background", "title", "text"].forEach(function (t) {
-        if (core.isset(data[t]) && (data[t] instanceof Array) && data[t].length >= 3) {
+        if ((data[t] instanceof Array) && data[t].length >= 3) {
             if (data[t].length == 3) data[t].push(1);
             core.status.textAttribute[t] = data[t];
         }
-        if (t == 'background' && core.isset(data[t])) {
+        if (t == 'background') {
             var img = core.material.images.images[data[t]];
-            if (core.isset(img) && img.width == 192 && img.height == 128) {
+            if (img && img.width == 192 && img.height == 128) {
                 core.status.textAttribute[t] = data[t];
             }
         }
@@ -1035,10 +1032,8 @@ events.prototype._action_changePos = function (data, x, y, prefix) {
 events.prototype._action_showImage = function (data, x, y, prefix) {
     var loc = this.__action_getLoc(data.loc, 0, 0, prefix);
     if (core.isReplaying()) data.time = 0;
-    var image = core.material.images.images[data.image];
-    if (!core.isset(image)) return core.doAction();
     this.__action_doAsyncFunc(data.async || data.time == 0, this.showImage,
-        data.code, image, loc[0], loc[1], data.dw, data.dh, data.opacity, data.time);
+        data.code, data.image, loc[0], loc[1], data.dw, data.dh, data.opacity, data.time);
 }
 
 events.prototype._action_showTextImage = function (data, x, y, prefix) {
@@ -1157,17 +1152,14 @@ events.prototype._action_trigger = function (data, x, y, prefix) {
 }
 
 events.prototype._action_insert = function (data, x, y, prefix) {
-    if (core.isset(data.name)) { // 公共事件
+    if (data.name) { // 公共事件
         core.insertAction(this.getCommonEvent(data.name));
     }
     else {
         var loc = this.__action_getLoc(data.loc, x, y, prefix);
         var floorId = data.floorId || core.status.floorId;
         var event = core.floors[floorId].events[loc[0] + "," + loc[1]];
-        if (core.isset(event)) {
-            if (core.isset(event.data)) event = event.data;
-            this.insertAction(event);
-        }
+        if (event) this.insertAction(event.data || event);
     }
     core.doAction();
 }
@@ -1285,8 +1277,7 @@ events.prototype.__action_getInput = function (hint, isText) {
     }
     else {
         core.interval.onDownInterval = 'tmp';
-        value = prompt(core.replaceText(hint));
-        if (!core.isset(value)) value = "";
+        value = prompt(core.replaceText(hint)) || "";
     }
     return value;
 }
@@ -1514,7 +1505,7 @@ events.prototype._action_exit = function (data, x, y, prefix) {
 ////// 跟随 //////
 events.prototype.follow = function (name) {
     core.status.hero.followers = core.status.hero.followers || [];
-    if (core.isset(core.material.images.images[name])
+    if (core.material.images.images[name]
         && core.material.images.images[name].width == 128) {
         core.status.hero.followers.push({"img": name});
         core.control.gatherFollowers();
@@ -1526,7 +1517,7 @@ events.prototype.follow = function (name) {
 ////// 取消跟随 //////
 events.prototype.unfollow = function (name) {
     core.status.hero.followers = core.status.hero.followers || [];
-    if (!core.isset(name)) {
+    if (!name) {
         core.status.heroMoving.followers = [];
     }
     else {
@@ -1685,7 +1676,7 @@ events.prototype.moveImage = function (code, to, opacityVal, time, callback) {
     }
     var getOrDefault = function (a, b) {
         a = core.calValue(a);
-        return core.isset(a) ? a : b;
+        return a != null ? a : b;
     }
     var canvas = core.dymCanvas[name].canvas;
     var fromX = parseFloat(canvas.getAttribute("_left")),
@@ -1728,7 +1719,7 @@ events.prototype.setVolume = function (value, time, callback) {
         if (core.musicStatus.playingBgm)
             core.material.bgms[core.musicStatus.playingBgm].volume = value;
     }
-    if (!core.isset(time) || time < 100) {
+    if (!time || time < 100) {
         set(value);
         if (callback) callback();
         return;
@@ -1753,7 +1744,7 @@ events.prototype.vibrate = function (time, callback) {
         if (callback) callback();
         return;
     }
-    if (!core.isset(time) || time < 1000) time = 1000;
+    if (!time || time < 1000) time = 1000;
     // --- 将time调整为500的倍数（上整），不然会出错
     time = Math.ceil(time / 500) * 500;
     var shakeInfo = {duration: time * 3 / 50, speed: 5, power: 5, direction: 1, shake: 0};
@@ -1880,12 +1871,12 @@ events.prototype.checkLvUp = function () {
 }
 
 events.prototype._checkLvUp_check = function () {
-    if (!core.flags.enableLevelUp || !core.isset(core.firstData.levelUp)
+    if (!core.flags.enableLevelUp || !core.firstData.levelUp
         || core.status.hero.lv >= core.firstData.levelUp.length) return null;
     // 计算下一个所需要的数值
     var next = (core.firstData.levelUp[core.status.hero.lv] || {});
     var need = core.calValue(next.need);
-    if (!core.isset(need)) return null;
+    if (need == null) return null;
     if (core.status.hero.experience >= need) {
         // 升级
         core.status.hero.lv++;
diff --git a/libs/items.js b/libs/items.js
index ce3ee753..097ff627 100644
--- a/libs/items.js
+++ b/libs/items.js
@@ -64,7 +64,7 @@ items.prototype.getItemEffectTip = function (itemId) {
 ////// 使用道具 //////
 items.prototype.useItem = function (itemId, noRoute, callback) {
     if (!this.canUseItem(itemId)) {
-        if (core.isset(callback)) callback();
+        if (callback) callback();
         return;
     }
     // 执行道具效果
@@ -73,7 +73,7 @@ items.prototype.useItem = function (itemId, noRoute, callback) {
     this._afterUseItem(itemId);
     // 记录路线
     if (!noRoute) core.status.route.push("item:" + itemId);
-    if (core.isset(callback)) callback();
+    if (callback) callback();
 }
 
 items.prototype._useItemEffect = function (itemId) {
@@ -127,8 +127,7 @@ items.prototype.canUseItem = function (itemId) {
 
 ////// 获得某个物品的个数 //////
 items.prototype.itemCount = function (itemId) {
-    if (!core.isset(core.status.hero)) return 0;
-    if (!core.isset(itemId) || !core.isset(core.material.items[itemId])) return 0;
+    if (!core.material.items[itemId]) return 0;
     var itemCls = core.material.items[itemId].cls;
     if (itemCls == "items") return 0;
     return core.status.hero.items[itemCls][itemId] || 0;
@@ -141,12 +140,9 @@ items.prototype.hasItem = function (itemId) {
 
 ////// 是否装备某件装备 //////
 items.prototype.hasEquip = function (itemId) {
-    if (!core.isset(core.status.hero)) return null;
+    if (!(core.material.items[itemId] || {}).equip) return null;
 
-    if (!core.isset(itemId)) return null;
-    if (!core.isset((core.material.items[itemId] || {}).equip)) return null;
-
-    for (var i in core.status.hero.equipment || [])
+    for (var i in core.status.hero.equipment)
         if (core.status.hero.equipment[i] == itemId)
             return true;
     return false
@@ -154,19 +150,15 @@ items.prototype.hasEquip = function (itemId) {
 
 ////// 获得某个装备类型的当前装备 //////
 items.prototype.getEquip = function (equipType) {
-    if (!core.isset(core.status.hero)) return null;
-    return (core.status.hero.equipment || [])[equipType] || null;
+    return core.status.hero.equipment[equipType] || null;
 }
 
 ////// 设置某个物品的个数 //////
 items.prototype.setItem = function (itemId, itemNum) {
-    if (!core.isset(core.status.hero)) return null;
     itemNum = itemNum || 0;
     var itemCls = core.material.items[itemId].cls;
     if (itemCls == 'items') return;
-    if (!core.isset(core.status.hero.items[itemCls])) {
-        core.status.hero.items[itemCls] = {};
-    }
+
     core.status.hero.items[itemCls][itemId] = itemNum;
     if (core.status.hero.items[itemCls][itemId] <= 0) {
         if (itemCls != 'keys') delete core.status.hero.items[itemCls][itemId];
@@ -177,8 +169,7 @@ items.prototype.setItem = function (itemId, itemNum) {
 
 ////// 删除某个物品 //////
 items.prototype.removeItem = function (itemId, itemNum) {
-    if (!core.isset(core.status.hero)) return null;
-    if (!core.isset(itemNum)) itemNum = 1;
+    if (itemNum == null) itemNum = 1;
     if (!core.hasItem(itemId)) return false;
     var itemCls = core.material.items[itemId].cls;
     core.status.hero.items[itemCls][itemId] -= itemNum;
@@ -192,16 +183,11 @@ items.prototype.removeItem = function (itemId, itemNum) {
 
 ////// 增加某个物品的个数 //////
 items.prototype.addItem = function (itemId, itemNum) {
-    if (!core.isset(core.status.hero)) return null;
-    if (!core.isset(itemNum)) itemNum = 1;
+    if (itemNum == null) itemNum = 1;
     var itemData = core.material.items[itemId];
     var itemCls = itemData.cls;
     if (itemCls == 'items') return;
-    if (!core.isset(core.status.hero.items[itemCls])) {
-        core.status.hero.items[itemCls] = {};
-        core.status.hero.items[itemCls][itemId] = 0;
-    }
-    else if (!core.isset(core.status.hero.items[itemCls][itemId])) {
+    if (core.status.hero.items[itemCls][itemId] == null) {
         core.status.hero.items[itemCls][itemId] = 0;
     }
     core.status.hero.items[itemCls][itemId] += itemNum;
@@ -227,7 +213,7 @@ items.prototype.getEquipTypeById = function (equipId) {
 items.prototype.getEquipTypeByName = function (name) {
     var names = core.status.globalAttribute.equipName;
     for (var i = 0; i < names.length; ++i) {
-        if (names[i] === name && !core.isset((core.status.hero.equipment || [])[i])) {
+        if (names[i] === name && !core.status.hero.equipment[i]) {
             return i;
         }
     }
@@ -238,7 +224,7 @@ items.prototype.getEquipTypeByName = function (name) {
 items.prototype.canEquip = function (equipId, hint) {
     // 装备是否合法
     var equip = core.material.items[equipId] || {};
-    if (!core.isset(equip.equip)) {
+    if (!equip.equip) {
         if (hint) core.drawTip("不合法的装备！");
         return false;
     }
@@ -251,7 +237,7 @@ items.prototype.canEquip = function (equipId, hint) {
 
     // 可装备条件
     var condition = this.equipCondition[equipId];
-    if (core.isset(condition) && condition.length > 0) {
+    if (condition) {
         try {
             if (!eval(condition)) {
                 if (hint) core.drawTip("当前不可换上" + equip.name);
@@ -268,10 +254,8 @@ items.prototype.canEquip = function (equipId, hint) {
 
 ////// 换上 //////
 items.prototype.loadEquip = function (equipId, callback) {
-    if (!core.isset(core.status.hero)) return null;
-    if (!core.isset(core.status.hero.equipment)) core.status.hero.equipment = [];
     if (!this.canEquip(equipId, true)) {
-        if (core.isset(callback)) callback();
+        if (callback) callback();
         return;
     }
 
@@ -279,7 +263,7 @@ items.prototype.loadEquip = function (equipId, callback) {
     var type = this.getEquipTypeById(equipId);
     if (type < 0) {
         core.drawTip("当前没有" + loadEquip.equip.type + "的空位！");
-        if (core.isset(callback)) callback();
+        if (callback) callback();
         return;
     }
 
@@ -288,12 +272,9 @@ items.prototype.loadEquip = function (equipId, callback) {
 
 ////// 卸下 //////
 items.prototype.unloadEquip = function (equipType, callback) {
-    if (!core.isset(core.status.hero)) return null;
-    if (!core.isset(core.status.hero.equipment)) core.status.hero.equipment = [];
-
     var unloadEquipId = core.status.hero.equipment[equipType];
-    if (!core.isset(unloadEquipId)) {
-        if (core.isset(callback)) callback();
+    if (!unloadEquipId) {
+        if (callback) callback();
         return;
     }
 
@@ -302,13 +283,13 @@ items.prototype.unloadEquip = function (equipType, callback) {
 
 items.prototype.compareEquipment = function (compareEquipId, beComparedEquipId) {
     var compareAtk = 0, compareDef = 0, compareMdef = 0;
-    if (core.isset(compareEquipId)) {
+    if (compareEquipId) {
         var compareEquip = core.material.items[compareEquipId];
         compareAtk += (compareEquip.equip || {}).atk || 0;
         compareDef += (compareEquip.equip || {}).def || 0;
         compareMdef += (compareEquip.equip || {}).mdef || 0;
     }
-    if (core.isset(beComparedEquipId)) {
+    if (beComparedEquipId) {
         var beComparedEquip = core.material.items[beComparedEquipId];
         compareAtk -= (beComparedEquip.equip || {}).atk || 0;
         compareDef -= (beComparedEquip.equip || {}).def || 0;
@@ -334,15 +315,15 @@ items.prototype._loadEquipEffect = function (equipId, unloadEquipId, isPercentag
 
 items.prototype._realLoadEquip = function (type, loadId, unloadId, callback) {
     var loadEquip = core.material.items[loadId] || {}, unloadEquip = core.material.items[unloadId] || {};
-    if (!core.isset(loadEquip.equip)) loadEquip.equip = {};
-    if (!core.isset(unloadEquip.equip)) unloadEquip.equip = {};
+    loadEquip.equip = loadEquip.equip || {};
+    unloadEquip.equip = unloadEquip.equip || {}
 
     var loadPercentage = loadEquip.equip.percentage, unloadPercentage = unloadEquip.equip.percentage;
 
     if (loadPercentage != null && unloadPercentage != null && loadPercentage != unloadPercentage) {
         this.unloadEquip(type);
         this.loadEquip(loadId);
-        if (core.isset(callback)) callback();
+        if (callback) callback();
         return;
     }
 
@@ -361,12 +342,11 @@ items.prototype._realLoadEquip = function (type, loadId, unloadId, callback) {
     if (loadId) core.drawTip("已装备上" + loadEquip.name, core.material.icons.items[loadId]);
     else if (unloadId) core.drawTip("已卸下" + unloadEquip.name, core.material.icons.items[unloadId]);
 
-    if (core.isset(callback)) callback();
+    if (callback) callback();
 }
 
 ////// 保存装备 //////
 items.prototype.quickSaveEquip = function (index) {
-    if (!core.isset(core.status.hero.equipment)) core.status.hero.equipment = [];
     var saveEquips = core.getFlag("saveEquips", []);
     saveEquips[index] = core.clone(core.status.hero.equipment);
     core.setFlag("saveEquips", saveEquips);
@@ -376,7 +356,7 @@ items.prototype.quickSaveEquip = function (index) {
 ////// 读取装备 //////
 items.prototype.quickLoadEquip = function (index) {
     var current = core.getFlag("saveEquips", [])[index];
-    if (!core.isset(current)) {
+    if (!current) {
         core.drawTip(index + "号套装不存在");
         return;
     }
@@ -384,21 +364,20 @@ items.prototype.quickLoadEquip = function (index) {
     var equipSize = core.status.globalAttribute.equipName.length;
     for (var i = 0; i < equipSize; i++) {
         var v = current[i];
-        if (core.isset(v) && !this.canEquip(v, true))
+        if (v && !this.canEquip(v, true))
             return;
     }
     // 快速换装
-    if (!core.isset(core.status.hero.equipment)) core.status.hero.equipment = [];
     for (var i = 0; i < equipSize; i++) {
-        var now = core.status.hero.equipment[i] || null;
-        if (now != null) {
+        var now = core.status.hero.equipment[i];
+        if (now) {
             this.unloadEquip(i);
             core.status.route.push("unEquip:" + i);
         }
     }
     for (var i = 0; i < equipSize; i++) {
-        var to = current[i] || null;
-        if (to != null) {
+        var to = current[i];
+        if (to) {
             this.loadEquip(to);
             core.status.route.push("equip:" + to);
         }
diff --git a/libs/loader.js b/libs/loader.js
index 60e81804..5613c33d 100644
--- a/libs/loader.js
+++ b/libs/loader.js
@@ -42,7 +42,7 @@ loader.prototype._loadIcons = function () {
         for (var key in core.statusBar.icons) {
             if (typeof core.statusBar.icons[key] == 'number') {
                 core.statusBar.icons[key] = images[core.statusBar.icons[key]];
-                if (core.isset(core.statusBar.image[key]))
+                if (core.statusBar.image[key] != null)
                     core.statusBar.image[key].src = core.statusBar.icons[key].src;
             }
         }
@@ -82,7 +82,7 @@ loader.prototype._loadAutotiles = function (callback) {
 
 loader.prototype._loadTilesets = function (callback) {
     core.material.images.tilesets = {};
-    if (!core.isset(core.tilesets)) core.tilesets = [];
+    core.tilesets = core.tilesets || [];
     core.loader.loadImages(core.clone(core.tilesets), core.material.images.tilesets, function () {
         // 检查宽高是32倍数，如果出错在控制台报错
         for (var imgName in core.material.images.tilesets) {
@@ -99,8 +99,8 @@ loader.prototype._loadTilesets = function (callback) {
 }
 
 loader.prototype.loadImages = function (names, toSave, callback) {
-    if (!core.isset(names) || names.length == 0) {
-        if (core.isset(callback)) callback();
+    if (!names || names.length == 0) {
+        if (callback) callback();
         return;
     }
     var items = 0;
@@ -111,7 +111,7 @@ loader.prototype.loadImages = function (names, toSave, callback) {
             items++;
             core.loader._setStartProgressVal(items * (100 / names.length));
             if (items == names.length) {
-                if (core.isset(callback)) callback();
+                if (callback) callback();
             }
         })
     }
@@ -144,7 +144,7 @@ loader.prototype._loadAnimates = function () {
                 data.images = [];
                 data.images_rev = [];
                 content.bitmaps.forEach(function (t2) {
-                    if (!core.isset(t2) || t2 == "") {
+                    if (!t2) {
                         data.images.push(null);
                     }
                     else {
@@ -238,7 +238,7 @@ loader.prototype.loadOneSound = function (name) {
 }
 
 loader.prototype.loadBgm = function (name) {
-    if (!core.isset(core.material.bgms[name])) return;
+    if (!core.material.bgms[name]) return;
     // 如果没开启音乐，则不预加载
     if (!core.musicStatus.bgmStatus) return;
     // 是否已经预加载过
@@ -265,7 +265,7 @@ loader.prototype._preloadBgm = function (bgm) {
 }
 
 loader.prototype.freeBgm = function (name) {
-    if (!core.isset(core.material.bgms[name])) return;
+    if (!core.material.bgms[name]) return;
     // 从cachedBgms中删除
     core.musicStatus.cachedBgms = core.musicStatus.cachedBgms.filter(function (t) {
         return t != name;
diff --git a/libs/maps.js b/libs/maps.js
index af75d570..38ffd862 100644
--- a/libs/maps.js
+++ b/libs/maps.js
@@ -10,7 +10,7 @@ maps.prototype._init = function () {
 }
 
 maps.prototype._setFloorSize = function (floorId) {
-    if (!core.isset(floorId)) {
+    if (!floorId) {
         core.floorIds.forEach(function (floorId) {
             core.maps._setFloorSize(floorId);
         });
@@ -25,14 +25,14 @@ maps.prototype._setFloorSize = function (floorId) {
 ////// 加载某个楼层（从剧本或存档中） //////
 maps.prototype.loadFloor = function (floorId, map) {
     var floor = core.floors[floorId];
-    if (!core.isset(map)) map = floor.map;
+    if (!map) map = floor.map;
     if (map instanceof Array) {
         map = {"map": map};
     }
     var content = {};
     ["floorId", "title", "name", "canFlyTo", "canUseQuickShop", "cannotViewMap", "cannotMoveDirectly", "color", "weather",
         "defaultGround", "images", "item_ratio", "upFloor", "bgm", "downFloor", "underGround"].forEach(function (e) {
-        if (core.isset(map[e])) content[e] = core.clone(map[e]);
+        if (map[e] != null) content[e] = core.clone(map[e]);
         else content[e] = core.clone(floor[e]);
     });
     map = this.decompressMap(map.map, floorId);
@@ -98,18 +98,18 @@ maps.prototype.initBlock = function (x, y, id, addInfo, eventFloor) {
 
 ////// 添加一些信息到block上 //////
 maps.prototype._addInfo = function (block) {
-    if (block.event.cls.indexOf("enemy") == 0 && !core.isset(block.event.trigger)) {
+    if (block.event.cls.indexOf("enemy") == 0 && !block.event.trigger) {
         block.event.trigger = 'battle';
     }
-    if (block.event.cls == 'items' && !core.isset(block.event.trigger)) {
+    if (block.event.cls == 'items' && !block.event.trigger) {
         block.event.trigger = 'getItem';
     }
-    if (!core.isset(block.event.noPass)) {
+    if (block.event.noPass == null) {
         if (block.event.cls != 'items') {
             block.event.noPass = true;
         }
     }
-    if (!core.isset(block.event.animate)) {
+    if (block.event.animate == null) {
         block.event.animate = core.icons._getAnimateFrames(block.event.cls, false);
     }
     block.event.height = 32;
@@ -119,7 +119,7 @@ maps.prototype._addInfo = function (block) {
 
 ////// 向该楼层添加剧本的自定义事件 //////
 maps.prototype._addEvent = function (block, x, y, event) {
-    if (!core.isset(event)) return;
+    if (!event) return;
     // event是字符串或数组？
     if (typeof event == "string") {
         event = {"data": [event]};
@@ -127,11 +127,10 @@ maps.prototype._addEvent = function (block, x, y, event) {
     else if (event instanceof Array) {
         event = {"data": event};
     }
-    if (!core.isset(event.data))
-        event.data = [];
+    event.data = event.data || [];
 
     // 覆盖enable
-    if (!core.isset(block.disable) && core.isset(event.enable)) {
+    if (block.disable == null && event.enable != null) {
         block.disable = !event.enable;
     }
     // 覆盖animate
@@ -140,12 +139,12 @@ maps.prototype._addEvent = function (block, x, y, event) {
     }
     // 覆盖所有属性
     for (var key in event) {
-        if (key != "enable" && key != "animate" && core.isset(event[key])) {
+        if (key != "enable" && key != "animate" && event[key] != null) {
             block.event[key] = core.clone(event[key]);
         }
     }
     // 给无trigger的增加trigger:action
-    if (!core.isset(block.event.trigger)) {
+    if (!block.event.trigger) {
         block.event.trigger = 'action';
     }
 }
@@ -167,12 +166,12 @@ maps.prototype._initFloorMap = function (floorId) {
     var mh = core.floors[floorId].height;
 
     for (var x = 0; x < mh; x++) {
-        if (!core.isset(map[x])) map[x] = [];
+        if (map[x] == null) map[x] = [];
         for (var y = 0; y < mw; y++) {
-            if (!core.isset(map[x][y])) map[x][y] = 0;
+            if (map[x][y] == null) map[x][y] = 0;
             // check "disable"
             var event = core.floors[floorId].events[y + "," + x];
-            if (core.isset(event) && event.enable === false && main.mode == 'play') {
+            if (event && event.enable === false && main.mode == 'play') {
                 map[x][y] += ":f";
             }
         }
@@ -208,7 +207,7 @@ maps.prototype.compressMap = function (mapArr, floorId) {
 ////// 解压缩地图
 maps.prototype.decompressMap = function (mapArr, floorId) {
     var floorMap = this._initFloorMap(floorId);
-    if (!core.isset(mapArr)) return floorMap;
+    if (!mapArr) return floorMap;
 
     var mw = core.floors[floorId].width;
     var mh = core.floors[floorId].height;
@@ -230,7 +229,7 @@ maps.prototype.decompressMap = function (mapArr, floorId) {
 ////// 将当前地图重新变成数字，以便于存档 //////
 maps.prototype.saveMap = function (floorId) {
     var maps = core.status.maps;
-    if (!core.isset(floorId)) {
+    if (!floorId) {
         var map = {};
         for (var id in maps) {
             map[id] = this.saveMap(id);
@@ -262,7 +261,7 @@ maps.prototype._compressFloorData = function (map, floor) {
 
 ////// 将存档中的地图信息重新读取出来 //////
 maps.prototype.loadMap = function (data, floorId) {
-    if (!core.isset(floorId)) {
+    if (!floorId) {
         var map = {};
         core.floorIds.forEach(function (id) {
             map[id] = core.maps.loadFloor(id, data[id]);
@@ -275,7 +274,7 @@ maps.prototype.loadMap = function (data, floorId) {
 ////// 更改地图画布的尺寸
 maps.prototype.resizeMap = function (floorId) {
     floorId = floorId || core.status.floorId;
-    if (!core.isset(floorId)) return;
+    if (!floorId) return;
     core.bigmap.width = core.floors[floorId].width;
     core.bigmap.height = core.floors[floorId].height;
     var cwidth = core.bigmap.width * 32;
@@ -334,11 +333,11 @@ maps.prototype.getMapBlocksObj = function (floorId, showDisable) {
 ////// 将背景前景层变成二维数组的形式 //////
 maps.prototype.getBgFgMapArray = function (name, floorId, useCache) {
     floorId = floorId || core.status.floorId;
-    if (!core.isset(floorId)) return [];
+    if (!floorId) return [];
     var width = core.floors[floorId].width;
     var height = core.floors[floorId].height;
 
-    if (useCache && core.isset(core.status[name + "maps"][floorId]))
+    if (useCache && core.status[name + "maps"][floorId])
         return core.status[name + "maps"][floorId];
 
     var arr = core.clone(core.floors[floorId][name + "map"] || []);
@@ -363,7 +362,7 @@ maps.prototype.getBgFgMapArray = function (name, floorId, useCache) {
 ////// 生成全图的当前可移动信息 //////
 maps.prototype.generateMovableArray = function (floorId, x, y) {
     floorId = floorId || core.status.floorId;
-    if (!core.isset(floorId)) return null;
+    if (!floorId) return null;
     var width = core.floors[floorId].width, height = core.floors[floorId].height;
     var bgArray = this.getBgFgMapArray('bg', floorId, true),
         fgArray = this.getBgFgMapArray('fg', floorId, true),
@@ -377,7 +376,7 @@ maps.prototype.generateMovableArray = function (floorId, x, y) {
         });
     }
 
-    if (core.isset(x) && core.isset(y)) return generate(x, y);
+    if (x != null && y != null) return generate(x, y);
     var array = [];
     for (var x = 0; x < width; x++) {
         array[x] = [];
@@ -390,9 +389,9 @@ maps.prototype.generateMovableArray = function (floorId, x, y) {
 
 ////// 勇士能否前往某方向 //////
 maps.prototype.canMoveHero = function (x, y, direction, floorId) {
-    if (!core.isset(x)) x = core.getHeroLoc('x');
-    if (!core.isset(y)) y = core.getHeroLoc('y');
-    if (!core.isset(direction)) direction = core.getHeroLoc('direction');
+    if (x == null) x = core.getHeroLoc('x');
+    if (y == null) y = core.getHeroLoc('y');
+    direction = direction || core.getHeroLoc('direction');
     return core.inArray(this.generateMovableArray(floorId, x, y), direction);
 }
 
@@ -513,7 +512,7 @@ maps.prototype._canMoveDirectly_checkNextPoint = function (blocksObj, x, y) {
 ////// 绘制一个图块 //////
 maps.prototype.drawBlock = function (block, animate) {
     if (block.event.id == 'none') return;
-    var redraw = core.isset(animate);
+    var redraw = animate != null;
     if (!redraw) animate = 0;
     var x = block.x, y = block.y;
     // --- 在界面外的动画不绘制
@@ -526,7 +525,7 @@ maps.prototype.drawBlock = function (block, animate) {
     var blockInfo = this.getBlockInfo(block);
     if (blockInfo == null) return;
     if (blockInfo.cls != 'tileset') blockInfo.posX = animate % block.event.animate;
-    if (!core.isset(block.name))
+    if (!block.name)
         this._drawBlockInfo(blockInfo, block.x, block.y);
     else
         this._drawBlockInfo_bgfg(blockInfo, block.name, block.x, block.y);
@@ -571,8 +570,8 @@ maps.prototype.generateGroundPattern = function (floorId) {
 ////// 绘制某张地图 //////
 maps.prototype.drawMap = function (floorId, callback) {
     floorId = floorId || core.status.floorId;
-    if (!core.isset(floorId)) {
-        if (core.isset(callback)) callback();
+    if (!floorId) {
+        if (callback) callback();
         return;
     }
     core.clearMap('all');
@@ -581,14 +580,13 @@ maps.prototype.drawMap = function (floorId, callback) {
     core.status.thisMap = core.status.maps[floorId];
 
     this._drawMap_drawAll();
-    if (core.isset(core.status.curtainColor)) {
+    if (core.status.curtainColor) {
         core.fillRect('curtain', 0, 0, core.__PIXELS__, core.__PIXELS__,
             core.arrayToRGBA(core.status.curtainColor));
     }
     core.drawHero();
     core.updateStatusBar();
-    if (core.isset(callback))
-        callback();
+    if (callback) callback();
 }
 
 maps.prototype._drawMap_drawAll = function (floorId) {
@@ -616,7 +614,7 @@ maps.prototype._drawMap_drawBlockInfo = function (ctx, block, blockInfo, arr, on
 
 ////// 绘制背景层 //////
 maps.prototype.drawBg = function (floorId, ctx) {
-    var onMap = !core.isset(ctx);
+    var onMap = ctx == null;
     if (onMap) {
         ctx = core.canvas.bg;
         core.clearMap(ctx);
@@ -631,7 +629,7 @@ maps.prototype._drawBg_drawBackground = function (floorId, ctx) {
     var width = core.floors[floorId].width, height = core.floors[floorId].height;
     var groundId = (core.status.maps || core.floors)[floorId].defaultGround || "ground";
     var yOffset = core.material.icons.terrains[groundId];
-    if (core.isset(yOffset)) {
+    if (yOffset != null) {
         for (var i = 0; i < width; i++) {
             for (var j = 0; j < height; j++) {
                 ctx.drawImage(core.material.images.terrains, 0, yOffset * 32, 32, 32, i * 32, j * 32, 32, 32);
@@ -643,9 +641,9 @@ maps.prototype._drawBg_drawBackground = function (floorId, ctx) {
 ////// 绘制事件层 //////
 maps.prototype.drawEvents = function (floorId, blocks, ctx) {
     floorId = floorId || core.status.floorId;
-    if (!core.isset(blocks)) blocks = core.status.maps[floorId].blocks;
+    if (!blocks) blocks = core.status.maps[floorId].blocks;
     var arr = this.getMapArray(blocks, core.floors[floorId].width, core.floors[floorId].height);
-    var onMap = !core.isset(ctx);
+    var onMap = ctx == null;
     if (onMap) ctx = core.canvas.event;
     blocks.filter(function (block) {
         return block.event && !block.disable;
@@ -657,7 +655,7 @@ maps.prototype.drawEvents = function (floorId, blocks, ctx) {
 
 ////// 绘制前景层 //////
 maps.prototype.drawFg = function (floorId, ctx) {
-    var onMap = !core.isset(ctx);
+    var onMap = ctx == null;
     if (onMap) ctx = core.canvas.fg;
     // ------ 调整这两行的顺序来控制是先绘制贴图还是先绘制背景图块；后绘制的覆盖先绘制的。
     this._drawFloorImages(floorId, ctx, 'fg');
@@ -667,11 +665,11 @@ maps.prototype.drawFg = function (floorId, ctx) {
 ////// 实际的背景/前景图块的绘制 //////
 maps.prototype._drawBgFgMap = function (floorId, ctx, name, onMap) {
     floorId = floorId || core.status.floorId;
-    if (!core.isset(floorId)) return;
+    if (!floorId) return;
     var width = core.floors[floorId].width;
     var height = core.floors[floorId].height;
 
-    if (!core.isset(core.status[name + "maps"]))
+    if (!core.status[name + "maps"])
         core.status[name + "maps"] = {};
 
     var arr = this.getBgFgMapArray(name, floorId);
@@ -680,7 +678,7 @@ maps.prototype._drawBgFgMap = function (floorId, ctx, name, onMap) {
             var block = this.initBlock(x, y, arr[y][x], true);
             block.name = name;
             var blockInfo = this.getBlockInfo(block);
-            if (!core.isset(blockInfo)) continue;
+            if (!blockInfo) continue;
             this._drawMap_drawBlockInfo(ctx, block, blockInfo, arr, onMap);
         }
     }
@@ -691,8 +689,8 @@ maps.prototype._drawBgFgMap = function (floorId, ctx, name, onMap) {
 ////// 绘制楼层贴图 //////
 maps.prototype._drawFloorImages = function (floorId, ctx, name, images, currStatus) {
     floorId = floorId || core.status.floorId;
-    if (!core.isset(images)) images = this._getFloorImages(floorId);
-    var redraw = core.isset(currStatus);
+    if (!images) images = this._getFloorImages(floorId);
+    var redraw = currStatus != null;
     if (!redraw) core.status.floorAnimateObjs = core.clone(images);
     images.forEach(function (t) {
         if (typeof t == 'string') t = [0, 0, t];
@@ -700,7 +698,7 @@ maps.prototype._drawFloorImages = function (floorId, ctx, name, images, currStat
         var image = core.material.images.images[imageName];
         if (redraw && frame == 1) return; // 不重绘
 
-        if (core.isset(dx) && core.isset(dy) && core.isset(image) &&
+        if (core.isset(dx) && core.isset(dy) && image &&
             !core.hasFlag("__floorImg__" + floorId + "_" + dx + "_" + dy)) {
             var width = parseInt(image.width / frame), offsetX = (currStatus || 0) % frame * width;
             if (/.*\.gif/i.test(imageName) && main.mode == 'play') {
@@ -716,7 +714,7 @@ maps.prototype._drawFloorImages = function (floorId, ctx, name, images, currStat
 maps.prototype._getFloorImages = function (floorId) {
     floorId = floorId || core.status.floorId;
     var images = [];
-    if (core.isset((core.status.maps || core.floors)[floorId].images)) {
+    if ((core.status.maps || core.floors)[floorId].images) {
         images = (core.status.maps || core.floors)[floorId].images;
         if (typeof images == 'string') {
             images = [[0, 0, images]];
@@ -897,7 +895,7 @@ maps.prototype._makeAutotileEdges = function () {
 //    all：是否绘制全图（默认false）；centerX,centerY：截取中心（默认为地图正中心）
 maps.prototype.drawThumbnail = function (floorId, blocks, options, toDraw) {
     floorId = floorId || core.status.floorId;
-    if (!core.isset(floorId)) return;
+    if (!floorId) return;
     // Step1：绘制到tempCanvas上
     this._drawThumbnail_drawTempCanvas(floorId, blocks, options);
     // Step2：从tempCanvas绘制到对应的画布上
@@ -905,8 +903,8 @@ maps.prototype.drawThumbnail = function (floorId, blocks, options, toDraw) {
 }
 
 maps.prototype._drawThumbnail_drawTempCanvas = function (floorId, blocks, options) {
-    if (!core.isset(blocks)) blocks = core.status.maps[floorId].blocks;
-    if (!core.isset(options)) options = {};
+    blocks = blocks || core.status.maps[floorId].blocks;
+    options = options || {}
 
     var width = core.floors[floorId].width;
     var height = core.floors[floorId].height;
@@ -918,7 +916,7 @@ maps.prototype._drawThumbnail_drawTempCanvas = function (floorId, blocks, option
     tempCanvas.clearRect(0, 0, tempWidth, tempHeight);
 
     // --- 暂存 flags
-    var hasHero = core.isset(core.status.hero), flags = null;
+    var hasHero = core.status.hero != null, flags = null;
     if (options.flags) {
         if (!hasHero) core.status.hero = {};
         flags = core.status.hero.flags;
@@ -953,15 +951,15 @@ maps.prototype._drawThumbnail_realDrawTempCanvas = function (floorId, blocks, op
 }
 
 maps.prototype._drawThumbnail_drawToTarget = function (floorId, toDraw) {
-    if (!core.isset(toDraw)) return;
+    if (toDraw == null) return;
     if (typeof toDraw == 'string' || toDraw.canvas) toDraw = {ctx: toDraw};
     var ctx = core.getContextByName(toDraw.ctx);
     if (ctx == null) return;
     var x = toDraw.x || 0, y = toDraw.y || 0, size = toDraw.size || core.__PIXELS__;
     var width = core.floors[floorId].width, height = core.floors[floorId].height;
     var centerX = toDraw.centerX, centerY = toDraw.centerY;
-    if (!core.isset(centerX)) centerX = Math.floor(width / 2);
-    if (!core.isset(centerY)) centerY = Math.floor(height / 2);
+    if (centerX == null) centerX = Math.floor(width / 2);
+    if (centerY == null) centerY = Math.floor(height / 2);
     var tempCanvas = core.bigmap.tempCanvas, tempWidth = 32 * width, tempHeight = 32 * height;
 
     core.clearMap(ctx, x, y, size, size);
@@ -996,7 +994,7 @@ maps.prototype._drawThumbnail_drawToTarget = function (floorId, toDraw) {
 maps.prototype.noPass = function (x, y, floorId) {
     var block = core.getBlock(x, y, floorId);
     if (block == null) return false;
-    return core.isset(block.block.event.noPass) && block.block.event.noPass;
+    return block.block.event.noPass;
 }
 
 ////// 某个点是否存在NPC //////
@@ -1010,7 +1008,7 @@ maps.prototype.npcExists = function (x, y, floorId) {
 maps.prototype.terrainExists = function (x, y, id, floorId) {
     var block = this.getBlock(x, y, floorId);
     if (block == null) return false;
-    return block.block.event.cls == 'terrains' && (core.isset(id) ? block.block.event.id == id : true);
+    return block.block.event.cls == 'terrains' && (id ? block.block.event.id == id : true);
 }
 
 ////// 某个点是否存在楼梯 //////
@@ -1030,16 +1028,16 @@ maps.prototype.nearStair = function () {
 maps.prototype.enemyExists = function (x, y, id, floorId) {
     var block = this.getBlock(x, y, floorId);
     if (block == null) return false;
-    return block.block.event.cls.indexOf('enemy') == 0 && (core.isset(id) ? block.block.event.id == id : true);
+    return block.block.event.cls.indexOf('enemy') == 0 && (id ? block.block.event.id == id : true);
 }
 
 ////// 获得某个点的block //////
 maps.prototype.getBlock = function (x, y, floorId, showDisable) {
     floorId = floorId || core.status.floorId;
-    if (!core.isset(floorId)) return null;
+    if (!floorId) return null;
     var blocks = core.status.maps[floorId].blocks;
     for (var n = 0; n < blocks.length; n++) {
-        if (blocks[n].x == x && blocks[n].y == y && core.isset(blocks[n].event)) {
+        if (blocks[n].x == x && blocks[n].y == y) {
             if (!showDisable && blocks[n].disable) return null;
             return {"index": n, "block": blocks[n]};
         }
@@ -1061,7 +1059,7 @@ maps.prototype.getBlockCls = function (x, y, floorId, showDisable) {
 
 ////// 获得某个图块或素材的信息，包括 ID，cls，图片，坐标，faceIds 等等 //////
 maps.prototype.getBlockInfo = function (block) {
-    if (!core.isset(block)) return null;
+    if (!block) return null;
     if (typeof block == 'string') { // 参数是ID
         block = this.getNumberById(block);
     }
@@ -1075,7 +1073,7 @@ maps.prototype.getBlockInfo = function (block) {
 
     if (id == 'none') return null;
     else if (id == 'airwall') {
-        if (!core.isset(core.material.images.airwall)) return null;
+        if (!core.material.images.airwall) return null;
         image = core.material.images.airwall;
     }
     else if (cls == 'tileset') {
@@ -1121,7 +1119,7 @@ maps.prototype.searchBlock = function (id, floorId, showDisable) {
 ////// 将某个块从禁用变成启用状态 //////
 maps.prototype.showBlock = function (x, y, floorId) {
     floorId = floorId || core.status.floorId;
-    if (!core.isset(floorId)) return;
+    if (!floorId) return;
     var block = core.getBlock(x, y, floorId, true);
     if (block == null) return; // 不存在
     block = block.block;
@@ -1140,7 +1138,7 @@ maps.prototype.showBlock = function (x, y, floorId) {
 ////// 只隐藏但不删除某块 //////
 maps.prototype.hideBlock = function (x, y, floorId) {
     floorId = floorId || core.status.floorId;
-    if (!core.isset(floorId)) return;
+    if (!floorId) return;
 
     var block = core.getBlock(x, y, floorId, true);
     if (block == null) return; // 不存在
@@ -1161,7 +1159,7 @@ maps.prototype.hideBlock = function (x, y, floorId) {
 ////// 将某个块从启用变成禁用状态 //////
 maps.prototype.removeBlock = function (x, y, floorId) {
     floorId = floorId || core.status.floorId;
-    if (!core.isset(floorId)) return;
+    if (!floorId) return;
 
     var block = core.getBlock(x, y, floorId, true);
     if (block == null) return; // 不存在
@@ -1185,7 +1183,7 @@ maps.prototype.removeBlock = function (x, y, floorId) {
 ////// 根据block的索引（尽可能）删除该块 //////
 maps.prototype.removeBlockById = function (index, floorId) {
     floorId = floorId || core.status.floorId;
-    if (!core.isset(floorId)) return;
+    if (!floorId) return;
 
     var blocks = core.status.maps[floorId].blocks, block = blocks[index];
 
@@ -1213,7 +1211,7 @@ maps.prototype.canRemoveBlock = function (block, floorId) {
 ////// 一次性删除多个block //////
 maps.prototype.removeBlockByIds = function (floorId, ids) {
     floorId = floorId || core.status.floorId;
-    if (!core.isset(floorId)) return;
+    if (!floorId) return;
     ids.sort(function (a, b) {
         return b - a
     }).forEach(function (id) {
@@ -1258,7 +1256,7 @@ maps.prototype._triggerBgFgMap = function (type, name, loc, floorId, callback) {
     if (typeof loc[0] == 'number' && typeof loc[1] == 'number')
         loc = [loc];
     floorId = floorId || core.status.floorId;
-    if (!core.isset(floorId)) return;
+    if (!floorId) return;
 
     if (loc.length == 0) return;
     loc.forEach(function (t) {
@@ -1273,7 +1271,7 @@ maps.prototype._triggerBgFgMap = function (type, name, loc, floorId, callback) {
         core.drawMap(floorId, callback);
     }
     else {
-        if (core.isset(callback)) callback();
+        if (callback) callback();
     }
 }
 
@@ -1293,7 +1291,7 @@ maps.prototype._triggerFloorImage = function (type, loc, floorId, callback) {
     if (typeof loc[0] == 'number' && typeof loc[1] == 'number')
         loc = [loc];
     floorId = floorId || core.status.floorId;
-    if (!core.isset(floorId)) return;
+    if (!floorId) return;
 
     if (loc.length == 0) return;
     loc.forEach(function (t) {
@@ -1307,15 +1305,14 @@ maps.prototype._triggerFloorImage = function (type, loc, floorId, callback) {
         core.drawMap(floorId, callback);
     }
     else {
-        if (core.isset(callback)) callback();
+        if (callback) callback();
     }
 }
 
 ////// 改变图块 //////
 maps.prototype.setBlock = function (number, x, y, floorId) {
     floorId = floorId || core.status.floorId;
-    if (!core.isset(floorId)) return;
-    if (!core.isset(number) || !core.isset(x) || !core.isset(y)) return;
+    if (!floorId || number == null || x == null || y == null) return;
     if (x < 0 || x >= core.floors[floorId].width || y < 0 || y >= core.floors[floorId].height) return;
 
     var originBlock = core.getBlock(x, y, floorId, true);
@@ -1347,8 +1344,7 @@ maps.prototype.setBlock = function (number, x, y, floorId) {
 ////// 改变前景背景的图块 //////
 maps.prototype.setBgFgBlock = function (name, number, x, y, floorId) {
     floorId = floorId || core.status.floorId;
-    if (!core.isset(floorId)) return;
-    if (!core.isset(number) || !core.isset(x) || !core.isset(y)) return;
+    if (!floorId || number == null || x == null || y == null) return;
     if (x < 0 || x >= core.floors[floorId].width || y < 0 || y >= core.floors[floorId].height) return;
     if (name != 'bg' && name != 'fg') return;
 
@@ -1363,7 +1359,7 @@ maps.prototype.setBgFgBlock = function (name, number, x, y, floorId) {
 ////// 重置地图 //////
 maps.prototype.resetMap = function (floorId) {
     floorId = floorId || core.status.floorId;
-    if (!core.isset(floorId)) return;
+    if (!floorId) return;
     if (typeof floorId == 'string') floorId = [floorId];
     var needRefresh = false;
     floorId.forEach(function (t) {
@@ -1458,7 +1454,7 @@ maps.prototype.moveBlock = function (x, y, steps, time, keep, callback) {
     time = time || 500;
     var blockArr = this._getAndRemoveBlock(x, y);
     if (blockArr == null) {
-        if (core.isset(callback)) callback();
+        if (callback) callback();
         return;
     }
     var block = blockArr[0], blockInfo = blockArr[1];
@@ -1499,9 +1495,9 @@ maps.prototype._moveBlock_moving = function (blockInfo, canvases, moveInfo) {
         moveInfo.y += core.utils.scan[direction].y;
         // 根据faceIds修改朝向
         var currid = blockInfo.faceIds[direction];
-        if (core.isset(currid)) {
+        if (currid) {
             var posY = core.material.icons[blockInfo.cls][currid];
-            if (core.isset(posY)) blockInfo.posY = posY;
+            if (posY != null) blockInfo.posY = posY;
         }
     }
     moveInfo.step++;
@@ -1519,7 +1515,7 @@ maps.prototype.jumpBlock = function (sx, sy, ex, ey, time, keep, callback) {
     time = time || 500;
     var blockArr = this._getAndRemoveBlock(sx, sy);
     if (blockArr == null) {
-        if (core.isset(callback)) callback();
+        if (callback) callback();
         return;
     }
     var block = blockArr[0], blockInfo = blockArr[1];
@@ -1579,7 +1575,7 @@ maps.prototype._moveJumpBlock_finished = function (blockInfo, canvases, info, an
             core.setBlock(blockInfo.number, info.x, info.y);
             core.showBlock(info.x, info.y);
         }
-        if (core.isset(callback)) callback();
+        if (callback) callback();
     }
     else {
         this._moveDetachedBlock(blockInfo, info.px, info.py, info.opacity, canvases);
@@ -1593,7 +1589,7 @@ maps.prototype.animateBlock = function (loc, type, time, callback) {
         loc = [loc];
     var list = this._animateBlock_getList(loc);
     if (list.length == 0) {
-        if (core.isset(callback)) callback();
+        if (callback) callback();
         return;
     }
     this._animateBlock_drawList(list, isHide ? 1 : 0);
@@ -1615,7 +1611,7 @@ maps.prototype._animateBlock_doAnimate = function (loc, list, isHide, delta, cal
                 if (isHide) core.removeBlock(t[0], t[1]);
                 else core.showBlock(t[0], t[1]);
             });
-            if (core.isset(callback)) callback();
+            if (callback) callback();
         }
     }, 10);
 
@@ -1651,14 +1647,14 @@ maps.prototype._animateBlock_drawList = function (list, opacity) {
 
 ////// 添加一个全局动画 //////
 maps.prototype.addGlobalAnimate = function (b) {
-    if (!core.isset(b.event) || !core.isset(b.event.animate)) return;
+    if (!b.event || b.event.animate == null) return;
     if (b.event.cls == 'autotile') {
         var id = b.event.id, img = core.material.images.autotile[id];
-        if (!core.isset(img) || img.width == 96) return;
+        if (!img || img.width == 96) return;
         core.status.autotileAnimateObjs.blocks.push(b);
     }
     else {
-        if (!core.isset(b.event.animate) || b.event.animate == 1) return;
+        if (!b.event.animate || b.event.animate == 1) return;
         core.status.globalAnimateObjs.push(b);
     }
 }
@@ -1666,7 +1662,7 @@ maps.prototype.addGlobalAnimate = function (b) {
 ////// 删除一个或所有全局动画 //////
 maps.prototype.removeGlobalAnimate = function (x, y, name) {
     // 没有定义xy，则全部删除
-    if (!core.isset(x) || !core.isset(y)) {
+    if (x == null || y == null) {
         core.status.globalAnimateStatus = 0;
         core.status.globalAnimateObjs = [];
         core.status.autotileAnimateObjs = {"blocks": [], "map": null, "bgmap": null, "fgmap": null};
@@ -1679,7 +1675,7 @@ maps.prototype.removeGlobalAnimate = function (x, y, name) {
     });
 
     // 检查Autotile
-    if (core.isset(core.status.autotileAnimateObjs.blocks)) {
+    if (core.status.autotileAnimateObjs.blocks) {
         core.status.autotileAnimateObjs.blocks = core.status.autotileAnimateObjs.blocks.filter(function (block) {
             return block.x != x || block.y != y || block.name != name;
         });
@@ -1703,13 +1699,13 @@ maps.prototype.drawAnimate = function (name, x, y, callback) {
 
     // 正在播放录像：不显示动画
     if (core.isReplaying()) {
-        if (core.isset(callback)) callback();
+        if (callback) callback();
         return -1;
     }
 
     // 检测动画是否存在
-    if (!core.isset(core.material.animates[name]) || !core.isset(x) || !core.isset(y)) {
-        if (core.isset(callback)) callback();
+    if (!core.material.animates[name] || x == null || y == null) {
+        if (callback) callback();
         return -1;
     }
 
@@ -1738,7 +1734,7 @@ maps.prototype._drawAnimateFrame = function (animate, centerX, centerY, index) {
     var ratio = animate.ratio;
     frame.forEach(function (t) {
         var image = animate.images[t.index];
-        if (!core.isset(image)) return;
+        if (!image) return;
         var realWidth = image.width * ratio * t.zoom / 100;
         var realHeight = image.height * ratio * t.zoom / 100;
         core.setAlpha('animate', t.opacity / 255);
@@ -1771,8 +1767,7 @@ maps.prototype.stopAnimate = function (id, doCallback) {
             if (doCallback) {
                 (function (callback) {
                     setTimeout(function () {
-                        if (core.isset(callback))
-                            callback();
+                        if (callback) callback();
                     });
                 })(obj.callback);
             }
diff --git a/libs/utils.js b/libs/utils.js
index 9cb77897..3c574036 100644
--- a/libs/utils.js
+++ b/libs/utils.js
@@ -61,7 +61,7 @@ utils.prototype.replaceText = function (text, need, times) {
 
 ////// 计算表达式的值 //////
 utils.prototype.calValue = function (value, prefix, need, times) {
-    if (!core.isset(value)) return value;
+    if (!core.isset(value)) return null;
     if (typeof value === 'string') {
         value = value.replace(/status:([\w\d_]+)/g, "core.getStatus('$1')");
         value = value.replace(/item:([\w\d_]+)/g, "core.itemCount('$1')");
@@ -77,7 +77,7 @@ utils.prototype.calValue = function (value, prefix, need, times) {
 
 ////// 字符串自动换行的分割 //////
 utils.prototype.splitLines = function (canvas, text, maxLength, font) {
-    if (core.isset(font)) core.setFont(canvas, font);
+    if (font) core.setFont(canvas, font);
 
     var contents = [];
     var last = 0;
@@ -94,7 +94,7 @@ utils.prototype.splitLines = function (canvas, text, maxLength, font) {
         else {
             var toAdd = text.substring(last, i + 1);
             var width = core.calWidth(canvas, toAdd);
-            if (core.isset(maxLength) && width > maxLength) {
+            if (maxLength && width > maxLength) {
                 contents.push(text.substring(last, i));
                 last = i;
             }
@@ -106,7 +106,7 @@ utils.prototype.splitLines = function (canvas, text, maxLength, font) {
 
 ////// 向某个数组前插入另一个数组或元素 //////
 utils.prototype.unshift = function (a, b) {
-    if (!(a instanceof Array) || !core.isset(b)) return;
+    if (!(a instanceof Array) || b == null) return;
     if (b instanceof Array) {
         core.clone(b).reverse().forEach(function (e) {
             a.unshift(e);
@@ -118,7 +118,7 @@ utils.prototype.unshift = function (a, b) {
 
 ////// 向某个数组后插入另一个数组或元素 //////
 utils.prototype.push = function (a, b) {
-    if (!(a instanceof Array) || !core.isset(b)) return;
+    if (!(a instanceof Array) || b == null) return;
     if (b instanceof Array) {
         core.clone(b).forEach(function (e) {
             a.push(e);
@@ -131,7 +131,7 @@ utils.prototype.push = function (a, b) {
 ////// 设置本地存储 //////
 utils.prototype.setLocalStorage = function (key, value) {
     try {
-        if (!core.isset(value)) {
+        if (value == null) {
             this.removeLocalStorage(key);
             return;
         }
@@ -166,15 +166,13 @@ utils.prototype.setLocalStorage = function (key, value) {
 utils.prototype.decompress = function (value) {
     try {
         var output = lzw_decode(value);
-        if (core.isset(output) && output.length > 0)
-            return JSON.parse(output);
+        if (output) return JSON.parse(output);
     }
     catch (e) {
     }
     try {
         var output = LZString.decompress(value);
-        if (core.isset(output) && output.length > 0)
-            return JSON.parse(output);
+        if (output) return JSON.parse(output);
     }
     catch (e) {
     }
@@ -204,15 +202,15 @@ utils.prototype.setLocalForage = function (key, value, successCallback, errorCal
 
     if (!core.platform.useLocalForage) {
         if (this.setLocalStorage(key, value)) {
-            if (core.isset(successCallback)) successCallback();
+            if (successCallback) successCallback();
         }
         else {
-            if (core.isset(errorCallback)) errorCallback();
+            if (errorCallback) errorCallback();
         }
         return;
     }
 
-    if (!core.isset(value)) {
+    if (value == null) {
         this.removeLocalForage(key);
         return;
     }
@@ -222,13 +220,13 @@ utils.prototype.setLocalForage = function (key, value, successCallback, errorCal
         return "\\u" + ("0000" + chr.charCodeAt(0).toString(16)).substr(-4)
     }));
     localforage.setItem(core.firstData.name + "_" + key, compressed, function (err) {
-        if (core.isset(err)) {
-            if (core.isset(errorCallback)) errorCallback(err);
+        if (err) {
+            if (errorCallback) errorCallback(err);
         }
         else {
             if (key == 'autoSave') core.saves.ids[0] = true;
             else if (/^save\d+$/.test(key)) core.saves.ids[parseInt(key.substring(4))] = true;
-            if (core.isset(successCallback)) successCallback();
+            if (successCallback) successCallback();
         }
     });
 }
@@ -237,19 +235,17 @@ utils.prototype.getLocalForage = function (key, defaultValue, successCallback, e
 
     if (!core.platform.useLocalForage) {
         var value = this.getLocalStorage(key, defaultValue);
-        if (core.isset(successCallback)) {
-            successCallback(value);
-        }
+        if (successCallback) successCallback(value);
         return;
     }
 
     localforage.getItem(core.firstData.name + "_" + key, function (err, value) {
-        if (core.isset(err)) {
-            if (core.isset(errorCallback)) errorCallback(err);
+        if (err) {
+            if (errorCallback) errorCallback(err);
         }
         else {
-            if (!core.isset(successCallback)) return;
-            if (core.isset(value)) {
+            if (!successCallback) return;
+            if (value != null) {
                 var res = core.utils.decompress(value);
                 successCallback(res == null ? defaultValue : res);
                 return;
@@ -263,25 +259,25 @@ utils.prototype.removeLocalForage = function (key, successCallback, errorCallbac
 
     if (!core.platform.useLocalForage) {
         this.removeLocalStorage(key);
-        if (core.isset(successCallback)) successCallback();
+        if (successCallback) successCallback();
         return;
     }
 
     localforage.removeItem(core.firstData.name + "_" + key, function (err) {
-        if (core.isset(err)) {
-            if (core.isset(errorCallback)) errorCallback(err);
+        if (err) {
+            if (errorCallback) errorCallback(err);
         }
         else {
             if (key == 'autoSave') delete core.saves.ids[0];
             else if (/^save\d+$/.test(key)) delete core.saves.ids[parseInt(key.substring(4))];
-            if (core.isset(successCallback)) successCallback();
+            if (successCallback) successCallback();
         }
     })
 }
 
 ////// 深拷贝一个对象 //////
 utils.prototype.clone = function (data) {
-    if (!core.isset(data)) return data;
+    if (!core.isset(data)) return null;
     // date
     if (data instanceof Date) {
         var copy = new Date();
@@ -334,14 +330,14 @@ utils.prototype.cropImage = function (image, size) {
 
 ////// 格式化时间为字符串 //////
 utils.prototype.formatDate = function (date) {
-    if (!core.isset(date)) return "";
+    if (!date) date = new Date();
     return "" + date.getFullYear() + "-" + core.setTwoDigits(date.getMonth() + 1) + "-" + core.setTwoDigits(date.getDate()) + " "
         + core.setTwoDigits(date.getHours()) + ":" + core.setTwoDigits(date.getMinutes()) + ":" + core.setTwoDigits(date.getSeconds());
 }
 
 ////// 格式化时间为最简字符串 //////
 utils.prototype.formatDate2 = function (date) {
-    if (!core.isset(date)) return "";
+    if (!date) date = new Date();
     return "" + date.getFullYear() + core.setTwoDigits(date.getMonth() + 1) + core.setTwoDigits(date.getDate())
         + core.setTwoDigits(date.getHours()) + core.setTwoDigits(date.getMinutes()) + core.setTwoDigits(date.getSeconds());
 }
@@ -395,7 +391,7 @@ utils.prototype.arrayToRGB = function (color) {
 }
 
 utils.prototype.arrayToRGBA = function (color) {
-    if (!this.isset(color[3])) color[3] = 1;
+    if (color[3] == null) color[3] = 1;
     var nowR = this.clamp(parseInt(color[0]), 0, 255), nowG = this.clamp(parseInt(color[1]), 0, 255),
         nowB = this.clamp(parseInt(color[2]), 0, 255), nowA = this.clamp(parseFloat(color[3]), 0, 1);
     return "rgba(" + nowR + "," + nowG + "," + nowB + "," + nowA + ")";
@@ -472,12 +468,12 @@ utils.prototype._encodeRoute_encodeOne = function (t) {
 
 ////// 解密路线 //////
 utils.prototype.decodeRoute = function (route) {
-    if (!core.isset(route)) return route;
+    if (!route) return route;
 
     // 解压缩
     try {
         var v = LZString.decompressFromBase64(route);
-        if (core.isset(v) && /^[a-zA-Z0-9+\/=:]*$/.test(v)) {
+        if (/^[a-zA-Z0-9+\/=:]*$/.test(v)) {
             route = v;
         }
     } catch (e) {
@@ -496,7 +492,7 @@ utils.prototype._decodeRoute_getNumber = function (decodeObj, noparse) {
         num += decodeObj.route.charAt(decodeObj.index++);
     }
     if (num.length == 0) num = "1";
-    return core.isset(noparse) ? num : parseInt(num);
+    return noparse ? num : parseInt(num);
 }
 
 utils.prototype._decodeRoute_getString = function (decodeObj) {
@@ -511,7 +507,7 @@ utils.prototype._decodeRoute_getString = function (decodeObj) {
 utils.prototype._decodeRoute_number2id = function (number) {
     if (/^\d+$/.test(number)) {
         var info = core.maps.blocksInfo[number];
-        if (core.isset(info)) return info.id;
+        if (info) return info.id;
     }
     return number;
 }
@@ -578,17 +574,14 @@ utils.prototype._decodeRoute_decodeOne = function (decodeObj, c) {
     }
 }
 
-////// 判断某对象是否不为undefined也不会null //////
+////// 判断某对象是否不为null也不为NaN //////
 utils.prototype.isset = function (val) {
-    if (val == undefined || val == null || (typeof val == 'number' && isNaN(val))) {
-        return false;
-    }
-    return true
+    return val != null && !(typeof val == 'number' && isNaN(val));
 }
 
 ////// 获得子数组 //////
 utils.prototype.subarray = function (a, b) {
-    if (!core.isset(a) || !core.isset(b) || !(a instanceof Array) || !(b instanceof Array) || a.length < b.length)
+    if (!(a instanceof Array) || !(b instanceof Array) || a.length < b.length)
         return null;
     var na = core.clone(a), nb = core.clone(b);
     while (nb.length > 0) {
@@ -598,7 +591,7 @@ utils.prototype.subarray = function (a, b) {
 }
 
 utils.prototype.inArray = function (array, element) {
-    return this.isset(array) && (array instanceof Array) && array.indexOf(element) >= 0;
+    return (array instanceof Array) && array.indexOf(element) >= 0;
 }
 
 utils.prototype.clamp = function (x, a, b) {
@@ -618,7 +611,7 @@ utils.prototype.expandMoveSteps = function (steps) {
             moveSteps.push(e);
         }
         else {
-            if (!core.isset(e.value)) {
+            if (e.value == null) {
                 moveSteps.push(e.direction)
             }
             else {
@@ -640,7 +633,7 @@ utils.prototype.setStatusBarInnerHTML = function (name, value, css) {
     // 判定是否需要缩放
     var length = this.strlen(value) || 1;
     style += 'font-size: ' + Math.min(1, 7 / length) + 'em; ';
-    if (core.isset(css)) style += css;
+    if (css) style += css;
     core.statusBar[name].innerHTML = "<span class='_status' style='" + style + "'>" + value + "</span>";
 }
 
@@ -691,7 +684,7 @@ utils.prototype.rand = function (num) {
     rand = this.__next_rand(rand);
     core.setFlag('__rand__', rand);
     var ans = rand / 2147483647;
-    if (core.isset(num) && num > 0)
+    if (num && num > 0)
         return Math.floor(ans * num);
     return ans;
 }
@@ -740,7 +733,7 @@ utils.prototype.readFile = function (success, error, readType) {
     core.platform.successCallback = success;
     core.platform.errorCallback = error;
 
-    if (core.isset(window.jsinterface)) {
+    if (window.jsinterface) {
         window.jsinterface.readFile();
         return;
     }
@@ -748,14 +741,14 @@ utils.prototype.readFile = function (success, error, readType) {
     // step 0: 不为http/https，直接不支持
     if (!core.platform.isOnline) {
         alert("离线状态下不支持文件读取！");
-        if (core.isset(error)) error();
+        if (error) error();
         return;
     }
 
     // Step 1: 如果不支持FileReader，直接不支持
     if (core.platform.fileReader == null) {
         alert("当前浏览器不支持FileReader！");
-        if (core.isset(error)) error();
+        if (error) error();
         return;
     }
 
@@ -766,7 +759,7 @@ utils.prototype.readFile = function (success, error, readType) {
         core.platform.fileInput.onchange = function () {
             var files = core.platform.fileInput.files;
             if (files.length == 0) {
-                if (core.isset(core.platform.errorCallback))
+                if (core.platform.errorCallback)
                     core.platform.errorCallback();
                 return;
             }
@@ -783,14 +776,14 @@ utils.prototype.readFile = function (success, error, readType) {
 utils.prototype.readFileContent = function (content) {
     var obj = null;
     if (content.slice(0, 4) === 'data') {
-        if (core.isset(core.platform.successCallback))
+        if (core.platform.successCallback)
             core.platform.successCallback(content);
         return;
     }
     try {
         obj = JSON.parse(content);
-        if (core.isset(obj)) {
-            if (core.isset(core.platform.successCallback))
+        if (obj) {
+            if (core.platform.successCallback)
                 core.platform.successCallback(obj);
             return;
         }
@@ -801,14 +794,14 @@ utils.prototype.readFileContent = function (content) {
     }
     alert("不是有效的JSON文件！");
 
-    if (core.isset(core.platform.errorCallback))
+    if (core.platform.errorCallback)
         core.platform.errorCallback();
 }
 
 ////// 下载文件到本地 //////
 utils.prototype.download = function (filename, content) {
 
-    if (core.isset(window.jsinterface)) {
+    if (window.jsinterface) {
         window.jsinterface.download(filename, content);
         return;
     }
@@ -873,8 +866,8 @@ utils.prototype.download = function (filename, content) {
 ////// 复制一段内容到剪切板 //////
 utils.prototype.copy = function (data) {
 
-    if (core.isset(window.jsinterface)) {
-        window.jsinterface.copy(filename, content);
+    if (window.jsinterface) {
+        window.jsinterface.copy(data);
         return true;
     }
 
@@ -909,9 +902,9 @@ utils.prototype.copy = function (data) {
 ////// 动画显示某对象 //////
 utils.prototype.show = function (obj, speed, callback) {
     obj.style.display = 'block';
-    if (!core.isset(speed) && main.mode != 'play') {
+    if (!speed && main.mode != 'play') {
         obj.style.opacity = 1;
-        if (core.isset(callback)) callback();
+        if (callback) callback();
         return;
     }
     obj.style.opacity = 0;
@@ -921,18 +914,16 @@ utils.prototype.show = function (obj, speed, callback) {
         obj.style.opacity = opacityVal;
         if (opacityVal > 1) {
             clearInterval(showAnimate);
-            if (core.isset(callback)) {
-                callback();
-            }
+            if (callback) callback();
         }
     }, speed);
 }
 
 ////// 动画使某对象消失 //////
 utils.prototype.hide = function (obj, speed, callback) {
-    if (!core.isset(speed) || main.mode != 'play') {
+    if (!speed || main.mode != 'play') {
         obj.style.display = 'none';
-        if (core.isset(callback)) callback();
+        if (callback) callback();
         return;
     }
     obj.style.opacity = 1;
@@ -943,9 +934,7 @@ utils.prototype.hide = function (obj, speed, callback) {
         if (opacityVal < 0) {
             obj.style.display = 'none';
             clearInterval(hideAnimate);
-            if (core.isset(callback)) {
-                callback();
-            }
+            if (callback) callback();
         }
     }, speed);
 }
@@ -984,7 +973,7 @@ utils.prototype.decodeCanvas = function (arr, width, height) {
     tempCanvas.canvas.height = height;
     tempCanvas.clearRect(0, 0, width, height);
 
-    if (!core.isset(arr)) return null;
+    if (!arr) return null;
     // to byte array
     var curr = 0, list = [];
     arr.forEach(function (x) {
@@ -1028,8 +1017,8 @@ utils.prototype.hashCode = function (obj) {
 }
 
 utils.prototype.same = function (a, b) {
-    if (!core.isset(a) && !core.isset(b)) return true;
-    if (!core.isset(a) || !core.isset(b)) return false;
+    if (a == null && b == null) return true;
+    if (a == null || b == null) return false;
     if (a === b) return true;
     if (a instanceof Array && b instanceof Array) {
         if (a.length != b.length) return false;
@@ -1051,14 +1040,14 @@ utils.prototype.same = function (a, b) {
 }
 
 utils.prototype._export = function (floorIds) {
-    if (!core.isset(floorIds)) floorIds = [core.status.floorId];
+    if (!floorIds) floorIds = [core.status.floorId];
     else if (floorIds == 'all') floorIds = core.clone(core.floorIds);
     else if (typeof floorIds == 'string') floorIds = [floorIds];
 
     var monsterMap = {};
 
     // map
-    var content = floorIds.length + "\n13 13\n\n";
+    var content = floorIds.length + "\n" + core.__SIZE__ + " " + core.__SIZE__ + "\n\n";
     floorIds.forEach(function (floorId) {
         var arr = core.maps.getMapArray(core.status.maps[floorId].blocks, 13, 13);
         content += arr.map(function (x) {
@@ -1098,34 +1087,26 @@ utils.prototype._export = function (floorIds) {
 utils.prototype.http = function (type, url, formData, success, error, mimeType, responseType) {
     var xhr = new XMLHttpRequest();
     xhr.open(type, url, true);
-    if (core.isset(mimeType))
-        xhr.overrideMimeType(mimeType);
-    if (core.isset(responseType))
-        xhr.responseType = responseType;
+    if (mimeType) xhr.overrideMimeType(mimeType);
+    if (responseType) xhr.responseType = responseType;
     xhr.onload = function (e) {
         if (xhr.status == 200) {
-            if (core.isset(success)) {
-                success(xhr.response);
-            }
+            if (success) success(xhr.response);
         }
         else {
-            if (core.isset(error))
-                error("HTTP " + xhr.status);
+            if (error) error("HTTP " + xhr.status);
         }
     };
     xhr.onabort = function () {
-        if (core.isset(error))
-            error("Abort");
+        if (error) error("Abort");
     }
     xhr.ontimeout = function () {
-        if (core.isset(error))
-            error("Timeout");
+        if (error) error("Timeout");
     }
     xhr.onerror = function () {
-        if (core.isset(error))
-            error("Error on Connection");
+        if (error) error("Error on Connection");
     }
-    if (core.isset(formData))
+    if (formData)
         xhr.send(formData);
     else xhr.send();
 }
diff --git a/project/functions.js b/project/functions.js
index bce959c7..18d5cc6d 100644
--- a/project/functions.js
+++ b/project/functions.js
@@ -122,25 +122,23 @@ var functions_d6ad677b_427a_4623_b50f_a445a3b0ef8a =
 	core.drawMap(floorId);
 	
 	// 切换楼层BGM
-	if (core.isset(core.status.maps[floorId].bgm)) {
+	if (core.status.maps[floorId].bgm) {
 		var bgm = core.status.maps[floorId].bgm;
 		if (bgm instanceof Array) bgm = bgm[0];
 		core.playBgm(bgm);
 	}
 	// 更改画面色调
 	var color = core.getFlag('__color__', null);
-	if (!core.isset(color) && core.isset(core.status.maps[floorId].color))
+	if (!color && core.status.maps[floorId].color)
 		color = core.status.maps[floorId].color;
 	core.clearMap('curtain');
 	core.status.curtainColor = color;
-	if (core.isset(color)) {
-		core.fillRect('curtain',0,0,416,416,core.arrayToRGBA(color));
-	}
+	if (color) core.fillRect('curtain', 0, 0, core.__SIZE__, core.__SIZE__, core.arrayToRGBA(color));
 	// 更改天气
 	var weather = core.getFlag('__weather__', null);
-	if (!core.isset(weather) && core.isset(core.status.maps[floorId].weather))
+	if (!weather && core.status.maps[floorId].weather)
 		weather = core.status.maps[floorId].weather;
-	if (core.isset(weather))
+	if (weather)
 		core.setWeather(weather[0], weather[1]);
 	else core.setWeather();
 
@@ -172,7 +170,7 @@ var functions_d6ad677b_427a_4623_b50f_a445a3b0ef8a =
 	// 返回true则将继续战斗，返回false将不再战斗。
 
 	// ------ 支援技能 ------ //
-	if (core.isset(x) && core.isset(y)) {
+	if (x != null && y != null) {
 		var index = x + "," + y,
 			cache = (core.status.checkBlock.cache || {})[index] || {},
 			guards = cache.guards || [];
@@ -204,13 +202,13 @@ var functions_d6ad677b_427a_4623_b50f_a445a3b0ef8a =
 	// 播放战斗音效和动画
 	var equipAnimate = 'hand',
 		equipId = (core.status.hero.equipment || [])[0];
-	if (core.isset(equipId) && core.isset((core.material.items[equipId].equip || {}).animate))
+	if (equipId && (core.material.items[equipId].equip || {}).animate)
 		equipAnimate = core.material.items[equipId].equip.animate;
 	// 检查equipAnimate是否存在SE，如果不存在则使用默认音效
-	if (!core.isset((core.material.animates[equipAnimate] || {}).se))
+	if (!(core.material.animates[equipAnimate] || {}).se)
 		core.playSound('attack.mp3');
 	// 强制战斗的战斗动画
-	core.drawAnimate(equipAnimate, core.isset(x) ? x : core.getHeroLoc('x'), core.isset(y) ? y : core.getHeroLoc('y'));
+	core.drawAnimate(equipAnimate, x != null ? x : core.getHeroLoc('x'), y != null ? y : core.getHeroLoc('y'));
 
 	var damage = core.enemys.getDamage(enemyId, x, y);
 	if (damage == null) damage = core.status.hero.hp + 1;
@@ -231,7 +229,7 @@ var functions_d6ad677b_427a_4623_b50f_a445a3b0ef8a =
 
 	// 删除该块
 	var guards = []; // 支援
-	if (core.isset(x) && core.isset(y)) {
+	if (x != null && y != null) {
 		core.removeBlock(x, y);
 		guards = core.getFlag("__guards__" + x + "_" + y, []);
 		core.removeFlag("__guards__" + x + "_" + y);
@@ -310,15 +308,13 @@ var functions_d6ad677b_427a_4623_b50f_a445a3b0ef8a =
 
 	// 如果有加点
 	var point = core.material.enemys[enemyId].point;
-	if (core.flags.enableAddPoint && core.isset(point) && point > 0) {
+	if (core.flags.enableAddPoint && point > 0) {
 		core.push(todo, [{ "type": "setValue", "name": "flag:point", "value": point }]);
 		core.push(todo, [{ "type": "insert", "name": "加点事件" }]);
 	}
 
-	// 如果该点存在，且有事件 -- V2.5.4 以后阻击怪也可以有战后事件了
-	if (core.isset(x) && core.isset(y)) {
-		core.push(todo, core.floors[core.status.floorId].afterBattle[x + "," + y]);
-	}
+	// 如果该点存在事件 -- V2.5.4 以后阻击怪也可以有战后事件了
+	core.push(todo, core.floors[core.status.floorId].afterBattle[x + "," + y]);
 
 	// 在这里增加其他的自定义事件需求
 	/*
@@ -330,58 +326,44 @@ var functions_d6ad677b_427a_4623_b50f_a445a3b0ef8a =
 	*/
 
 	// 如果事件不为空，将其插入
-	if (todo.length > 0) {
-		core.events.insertAction(todo, x, y);
-	}
+	if (todo.length > 0) core.insertAction(todo, x, y);
 
 	// 如果已有事件正在处理中
-	if (core.status.event.id == null) {
+	if (core.status.event.id == null)
 		core.continueAutomaticRoute();
-	} else {
+	else
 		core.clearContinueAutomaticRoute();
-	}
-	if (core.isset(callback)) callback();
+
+	if (callback) callback();
 
 },
         "afterOpenDoor": function (doorId, x, y, callback) {
 	// 开一个门后触发的事件
 
 	var todo = [];
-	if (core.isset(x) && core.isset(y)) {
-		var event = core.floors[core.status.floorId].afterOpenDoor[x + "," + y];
-		if (core.isset(event)) {
-			core.unshift(todo, event);
-		}
-	}
+	var event = core.floors[core.status.floorId].afterOpenDoor[x + "," + y];
+	if (event) core.unshift(todo, event);
 
-	if (todo.length > 0) {
-		core.events.insertAction(todo, x, y);
-	}
+	if (todo.length > 0) core.insertAction(todo, x, y);
 
-	if (core.status.event.id == null) {
+	if (core.status.event.id == null)
 		core.continueAutomaticRoute();
-	} else {
+	else
 		core.clearContinueAutomaticRoute();
-	}
-	if (core.isset(callback)) callback();
+
+	if (callback) callback();
 },
         "afterGetItem": function (itemId, x, y, callback) {
 	// 获得一个道具后触发的事件
 	core.playSound('item.mp3');
 
 	var todo = [];
-	if (core.isset(x) && core.isset(y)) {
-		var event = core.floors[core.status.floorId].afterGetItem[x + "," + y];
-		if (core.isset(event)) {
-			core.unshift(todo, event);
-		}
-	}
+	var event = core.floors[core.status.floorId].afterGetItem[x + "," + y];
+	if (event) core.unshift(todo, event);
 
-	if (todo.length > 0) {
-		core.events.insertAction(todo, x, y);
-	}
+	if (todo.length > 0) core.insertAction(todo, x, y);
 
-	if (core.isset(callback)) callback();
+	if (callback) callback();
 },
         "afterChangeLight": function(x,y) {
 	// 改变亮灯之后，可以触发的事件
@@ -516,10 +498,10 @@ var functions_d6ad677b_427a_4623_b50f_a445a3b0ef8a =
 	// ------ 支援 ------
 	var guards = [];
 	// 检查光环缓存
-	if (!core.isset(core.status.checkBlock.cache)) core.status.checkBlock.cache = {};
-	var index = core.isset(x) && core.isset(y) ? (x + "," + y) : "floor";
+	if (!core.status.checkBlock.cache) core.status.checkBlock.cache = {};
+	var index = x != null && y != null ? (x + "," + y) : "floor";
 	var cache = core.status.checkBlock.cache[index];
-	if (!core.isset(cache)) {
+	if (!cache) {
 		// 没有该点的缓存，则遍历每个图块
 		core.status.maps[floorId].blocks.forEach(function (block) {
 			if (!block.disable) {
@@ -527,7 +509,7 @@ var functions_d6ad677b_427a_4623_b50f_a445a3b0ef8a =
 				var id = block.event.id,
 					enemy = core.material.enemys[id];
 				// 检查是不是怪物，且是否拥有该特殊属性
-				if (core.isset(enemy) && core.hasSpecial(enemy.special, 25)) {
+				if (enemy && core.hasSpecial(enemy.special, 25)) {
 					// 检查是否可叠加
 					if (enemy.add || cnt == 0) {
 						hp_buff += enemy.value || 0;
@@ -537,10 +519,10 @@ var functions_d6ad677b_427a_4623_b50f_a445a3b0ef8a =
 					}
 				}
 				// 检查【支援】技能
-				if (core.isset(enemy) && core.hasSpecial(enemy.special, 26) &&
+				if (enemy && core.hasSpecial(enemy.special, 26) &&
 					// 检查支援条件，坐标存在，距离为1，且不能是自己
 					// 其他类型的支援怪，比如十字之类的话.... 看着做是一样的
-					core.isset(x) && core.isset(y) && Math.abs(block.x - x) <= 1 && Math.abs(block.y - y) <= 1 && !(x == block.x && y == block.y)) {
+					x != null && y != null && Math.abs(block.x - x) <= 1 && Math.abs(block.y - y) <= 1 && !(x == block.x && y == block.y)) {
 					// 记录怪物的x,y，ID
 					guards.push([block.x, block.y, id]);
 				}
@@ -959,8 +941,7 @@ var functions_d6ad677b_427a_4623_b50f_a445a3b0ef8a =
 	var statusList = ['hpmax', 'hp', 'mana', 'atk', 'def', 'mdef', 'money', 'experience'];
 	statusList.forEach(function (item) {
 		// 向下取整
-		if (core.isset(core.status.hero[item]))
-			core.status.hero[item] = Math.floor(core.status.hero[item]);
+		core.status.hero[item] = Math.floor(core.status.hero[item]);
 		// 大数据格式化
 		core.setStatusBarInnerHTML(item, core.getRealStatus(item));
 	});
@@ -1022,7 +1003,8 @@ var functions_d6ad677b_427a_4623_b50f_a445a3b0ef8a =
         "updateCheckBlock": function (floorId) {
 	// 领域、夹击、阻击等的伤害值计算
 	floorId = floorId || core.status.floorId;
-	if (!core.isset(floorId) || !core.isset(core.status.maps)) return;
+	if (!floorId || !core.status.maps) return;
+
 	var blocks = core.status.maps[floorId].blocks;
 	var width = core.floors[floorId].width, height = core.floors[floorId].height;
 
@@ -1035,9 +1017,7 @@ var functions_d6ad677b_427a_4623_b50f_a445a3b0ef8a =
 		if (!block.disable && block.event.cls.indexOf('enemy') == 0) {
 			var id = block.event.id,
 				enemy = core.material.enemys[id];
-			if (core.isset(enemy)) {
-				core.status.checkBlock.map[block.x + width * block.y] = id;
-			}
+			if (enemy) core.status.checkBlock.map[block.x + width * block.y] = id;
 		}
 		// 血网
 		if (!block.disable &&
@@ -1054,7 +1034,7 @@ var functions_d6ad677b_427a_4623_b50f_a445a3b0ef8a =
 	for (var x = 0; x < width; x++) {
 		for (var y = 0; y < height; y++) {
 			var id = core.status.checkBlock.map[x + width * y];
-			if (core.isset(id)) {
+			if (id) {
 
 				// 如果是血网，直接加上伤害值
 				if (id == "lavaNet") {
@@ -1070,7 +1050,7 @@ var functions_d6ad677b_427a_4623_b50f_a445a3b0ef8a =
 					var range = enemy.range || 1;
 					// 是否是九宫格领域
 					var zoneSquare = false;
-					if (core.isset(enemy.zoneSquare)) zoneSquare = enemy.zoneSquare;
+					if (enemy.zoneSquare != null) zoneSquare = enemy.zoneSquare;
 					// 在范围内进行搜索，增加领域伤害值
 					for (var dx = -range; dx <= range; dx++) {
 						for (var dy = -range; dy <= range; dy++) {
@@ -1115,7 +1095,7 @@ var functions_d6ad677b_427a_4623_b50f_a445a3b0ef8a =
 						var nx = x + core.utils.scan[dir].x,
 							ny = y + core.utils.scan[dir].y;
 						if (nx < 0 || nx >= width || ny < 0 || ny >= height) continue;
-						if (!core.isset(core.status.checkBlock.ambush[nx + ny * width]))
+						if (!core.status.checkBlock.ambush[nx + ny * width])
 							core.status.checkBlock.ambush[nx + ny * width] = [];
 						core.status.checkBlock.ambush[nx + ny * width].push([x, y, id, dir]);
 					}
@@ -1136,9 +1116,9 @@ var functions_d6ad677b_427a_4623_b50f_a445a3b0ef8a =
 				if (x > 0 && x < width - 1) {
 					var id1 = core.status.checkBlock.map[x - 1 +width * y],
 						id2 = core.status.checkBlock.map[x + 1 + width * y];
-					if (core.isset(id1) && core.isset(id2) && id1 == id2) {
+					if (id1 != null && id2 != null && id1 == id2) {
 						var enemy = core.material.enemys[id1];
-						if (core.isset(enemy) && core.enemys.hasSpecial(enemy.special, 16)) {
+						if (enemy && core.enemys.hasSpecial(enemy.special, 16)) {
 							has = true;
 						}
 					}
@@ -1147,9 +1127,9 @@ var functions_d6ad677b_427a_4623_b50f_a445a3b0ef8a =
 				if (y > 0 && y < height - 1) {
 					var id1 = core.status.checkBlock.map[x + width * (y - 1)],
 						id2 = core.status.checkBlock.map[x + width * (y + 1)];
-					if (core.isset(id1) && core.isset(id2) && id1 == id2) {
+					if (id1 != null && id2 != null && id1 == id2) {
 						var enemy = core.material.enemys[id1];
-						if (core.isset(enemy) && core.enemys.hasSpecial(enemy.special, 16)) {
+						if (enemy && core.enemys.hasSpecial(enemy.special, 16)) {
 							has = true;
 						}
 					}
@@ -1308,7 +1288,7 @@ var functions_d6ad677b_427a_4623_b50f_a445a3b0ef8a =
 	if (!core.isPlaying()) return;
 
 	// 执行当前楼层的并行事件处理
-	if (core.isset(core.status.floorId)) {
+	if (core.status.floorId) {
 		try {
 			eval(core.floors[core.status.floorId].parallelDo);
 		} catch (e) {
@@ -1377,7 +1357,7 @@ var functions_d6ad677b_427a_4623_b50f_a445a3b0ef8a =
 		
 		core.clearMap(name);
 		// 绘制色调层，默认不透明度
-		if (!core.isset(color)) color = 0.9;
+		if (color == null) color = 0.9;
 		ctx.fillStyle = "rgba(0,0,0,"+color+")";
 		ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);