diff --git a/docs/api.md b/docs/api.md
index 92bc289b..fb1b8546 100644
--- a/docs/api.md
+++ b/docs/api.md
@@ -208,6 +208,10 @@ core.removeBlock(x, y, floorId)
 否则将该点设置为禁用，以供以后可能的启用事件。
 
 
+core.setBlock(number, x, y, floorId)
+改变图块。number为要改变到的图块数字，x和y为坐标，floorId为楼层ID，可忽略表示当前楼层。
+
+
 core.useItem(itemId, callback)
 尝试使用某个道具。itemId为道具ID，callback为成功或失败后的回调。
 
diff --git a/libs/core.js b/libs/core.js
index 769249b6..55093bf7 100644
--- a/libs/core.js
+++ b/libs/core.js
@@ -687,6 +687,11 @@ core.prototype.removeBlockByIds = function (floorId, ids) {
     core.maps.removeBlockByIds(floorId, ids);
 }
 
+////// 改变图块 //////
+core.prototype.setBlock = function (number, x, y, floorId) {
+    core.maps.setBlock(number, x, y, floorId);
+}
+
 ////// 添加一个全局动画 //////
 core.prototype.addGlobalAnimate = function (block) {
     core.maps.addGlobalAnimate(block);
diff --git a/libs/events.js b/libs/events.js
index bd01339e..9a61fc10 100644
--- a/libs/events.js
+++ b/libs/events.js
@@ -396,24 +396,7 @@ events.prototype.doAction = function() {
                     x=core.calValue(data.loc[0]);
                     y=core.calValue(data.loc[1]);
                 }
-                var floorId = data.floorId||core.status.floorId;
-                var originBlock=core.getBlock(x,y,floorId,false);
-                var block = core.maps.initBlock(x,y,data.number);
-                core.maps.addInfo(block);
-                core.maps.addEvent(block,x,y,core.floors[floorId].events[x+","+y]);
-                core.maps.addChangeFloor(block,x,y,core.floors[floorId].changeFloor[x+","+y]);
-                if (core.isset(block.event)) {
-                    if (originBlock==null) {
-                        core.status.maps[floorId].blocks.push(block);
-                    }
-                    else {
-                        originBlock.block.id = data.number;
-                        originBlock.block.event = block.event;
-                    }
-                    if (floorId==core.status.floorId) {
-                        core.drawMap(floorId);
-                    }
-                }
+                core.setBlock(data.number, x, y, data.floorId);
                 this.doAction();
                 break;
             }
@@ -872,10 +855,16 @@ events.prototype.openDoor = function (id, x, y, needKey, callback) {
     core.stopAutomaticRoute();
     var speed=30;
     var doorId = id;
-    if (!(doorId.substring(doorId.length-4)=="Door")) {
+    if (doorId.length<4 || doorId.substring(doorId.length-4)!="Door") {
         doorId=doorId+"Door";
         speed=70;
     }
+    // 不存在门
+    if (!core.isset(core.material.icons.animates[doorId])) {
+        if (core.isset(callback)) callback();
+        return;
+    }
+
     var key = id.replace("Door", "Key");
     if (needKey && (key=="specialKey" || core.isset(core.material.items[key]))) {
         var key = id.replace("Door", "Key");
diff --git a/libs/maps.js b/libs/maps.js
index 2ab284db..0d03cef5 100644
--- a/libs/maps.js
+++ b/libs/maps.js
@@ -774,6 +774,30 @@ maps.prototype.removeBlockByIds = function (floorId, ids) {
     });
 }
 
+////// 改变图块 //////
+maps.prototype.setBlock = function (number, x, y, floorId) {
+    floorId = floorId || core.status.floorId;
+    if (!core.isset(number) || !core.isset(x) || !core.isset(y)) return;
+
+    var originBlock=core.getBlock(x,y,floorId,false);
+    var block = core.maps.initBlock(x,y,number);
+    core.maps.addInfo(block);
+    core.maps.addEvent(block,x,y,core.floors[floorId].events[x+","+y]);
+    core.maps.addChangeFloor(block,x,y,core.floors[floorId].changeFloor[x+","+y]);
+    if (core.isset(block.event)) {
+        if (originBlock==null) {
+            core.status.maps[floorId].blocks.push(block);
+        }
+        else {
+            originBlock.block.id = data.number;
+            originBlock.block.event = block.event;
+        }
+        if (floorId==core.status.floorId) {
+            core.drawMap(floorId);
+        }
+    }
+}
+
 ////// 添加一个全局动画 //////
 maps.prototype.addGlobalAnimate = function (b) {
     if (main.mode=='editor' && main.editor.disableGlobalAnimate) return;