diff --git a/_server/data.comment.js b/_server/data.comment.js
index bad2978f..c4ad3175 100644
--- a/_server/data.comment.js
+++ b/_server/data.comment.js
@@ -253,12 +253,6 @@ var data_comment_c456ea59_6018_45ef_8bcc_211a24c627dc =
                                 }
                             }
                         },
-                        "flyRange": {
-                            "_leaf": true,
-                            "_type": "textarea",
-                            "_range": "thiseval instanceof Array",
-                            "_data": "初始可飞的楼层；一般留空数组即可"
-                        },
                         "loc": {
                             
                             "_type": "object",
diff --git a/_server/editor_mode.js b/_server/editor_mode.js
index 15950e8e..d23f4abe 100644
--- a/_server/editor_mode.js
+++ b/_server/editor_mode.js
@@ -339,7 +339,6 @@ editor_mode = function (editor) {
     editor_mode.prototype.indent = function (field) {
         var num = '\t';
         if (field.indexOf("['main']") === 0) return 0;
-        if (field.indexOf("['flyRange']") !== -1) return 0;
         if (field === "['special']") return 0;
         return num;
     }
diff --git a/libs/actions.js b/libs/actions.js
index 00650fe4..7d5cba93 100644
--- a/libs/actions.js
+++ b/libs/actions.js
@@ -660,8 +660,8 @@ actions.prototype._sys_onmousewheel = function (direct) {
 
     // 楼层飞行器
     if (core.status.lockControl && core.status.event.id == 'fly') {
-        if (direct==1) core.ui.drawFly(core.status.event.data+1);
-        if (direct==-1) core.ui.drawFly(core.status.event.data-1);
+        if (direct==1) core.ui.drawFly(this._getNextFlyFloor(1));
+        if (direct==-1) core.ui.drawFly(this._getNextFlyFloor(-1));
         return;
     }
 
@@ -990,25 +990,44 @@ actions.prototype._clickBookDetail = function () {
 
 ////// 楼层传送器界面时的点击操作 //////
 actions.prototype._clickFly = function(x,y) {
-    if ((x==10 || x==11) && y==9) core.ui.drawFly(core.status.event.data-1);
-    if ((x==10 || x==11) && y==5) core.ui.drawFly(core.status.event.data+1);
-    if ((x==10 || x==11) && y==10) core.ui.drawFly(core.status.event.data-10);
-    if ((x==10 || x==11) && y==4) core.ui.drawFly(core.status.event.data+10);
+    if ((x==10 || x==11) && y==9) core.ui.drawFly(this._getNextFlyFloor(-1));
+    if ((x==10 || x==11) && y==5) core.ui.drawFly(this._getNextFlyFloor(1));
+    if ((x==10 || x==11) && y==10) core.ui.drawFly(this._getNextFlyFloor(-10));
+    if ((x==10 || x==11) && y==4) core.ui.drawFly(this._getNextFlyFloor(10));
     if (x>=5 && x<=7 && y==12) core.ui.closePanel();
     if (x>=0 && x<=9 && y>=3 && y<=11)
-        core.control.flyTo(core.status.hero.flyRange[core.status.event.data]);
+        core.control.flyTo(core.floorIds[core.status.event.data]);
     return;
 }
 
 ////// 楼层传送器界面时，按下某个键的操作 //////
 actions.prototype._keyDownFly = function (keycode) {
-    if (keycode==37) core.ui.drawFly(core.status.event.data-10);
-    else if (keycode==38) core.ui.drawFly(core.status.event.data+1);
-    else if (keycode==39) core.ui.drawFly(core.status.event.data+10);
-    else if (keycode==40) core.ui.drawFly(core.status.event.data-1);
+    if (keycode==37) core.ui.drawFly(this._getNextFlyFloor(-10));
+    else if (keycode==38) core.ui.drawFly(this._getNextFlyFloor(1));
+    else if (keycode==39) core.ui.drawFly(this._getNextFlyFloor(10));
+    else if (keycode==40) core.ui.drawFly(this._getNextFlyFloor(-1));
     return;
 }
 
+actions.prototype._getNextFlyFloor = function (delta, index) {
+    if (!core.isset(index)) index = core.status.event.data;
+    if (delta == 0) return index;
+    var sign = Math.sign(delta);
+    delta = Math.abs(delta);
+    var ans = index;
+    while (true) {
+        index += sign;
+        if (index < 0 || index >= core.floorIds.length) break;
+        var floorId = core.floorIds[index];
+        if (core.status.maps[floorId].canFlyTo && core.hasVisitedFloor(floorId)) {
+            delta--;
+            ans = index;
+        }
+        if (delta == 0) break;
+    }
+    return ans;
+}
+
 ////// 楼层传送器界面时，放开某个键的操作 //////
 actions.prototype._keyUpFly = function (keycode) {
     if (keycode==71 || keycode==27 || keycode==88)
diff --git a/libs/control.js b/libs/control.js
index a3e706f5..c44f8a70 100644
--- a/libs/control.js
+++ b/libs/control.js
@@ -1912,9 +1912,8 @@ control.prototype.replay = function () {
     }
     else if (action.indexOf("fly:")==0) {
         var floorId=action.substring(4);
-        var toIndex=core.status.hero.flyRange.indexOf(floorId);
-        var nowIndex=core.status.hero.flyRange.indexOf(core.status.floorId);
-        if (core.hasItem('fly') && toIndex>=0 && nowIndex>=0) {
+        var toIndex=core.floorIds.indexOf(floorId);
+        if (core.hasItem('fly')) {
             core.ui.drawFly(toIndex);
             setTimeout(function () {
                 if (!core.control.flyTo(floorId, function () {core.replay()})) {
diff --git a/libs/events.js b/libs/events.js
index 2631afec..3048b431 100644
--- a/libs/events.js
+++ b/libs/events.js
@@ -452,12 +452,6 @@ events.prototype.changeFloor = function (floorId, stair, heroLoc, time, callback
     core.clearContinueAutomaticRoute();
     core.status.replay.animate=true;
 
-    if (core.status.maps[floorId].canFlyTo && core.status.hero.flyRange.indexOf(floorId)<0) {
-        core.status.hero.flyRange.push(floorId);
-        core.status.hero.flyRange.sort(function (a, b) {
-            return core.floorIds.indexOf(a) - core.floorIds.indexOf(b);
-        })
-    }
     this._changeFloor_beforeChange(info, callback);
 }
 
diff --git a/libs/maps.js b/libs/maps.js
index 22c42747..5d7eb87e 100644
--- a/libs/maps.js
+++ b/libs/maps.js
@@ -51,7 +51,9 @@ maps.prototype._mapIntoBlocks = function (map,floor,floorId){
     var mh = core.floors[floorId].height;
     for (var i = 0; i < mh; i++) {
         for (var j = 0; j < mw; j++) {
-            blocks.push(this.initBlock(j, i, (map[i]||[])[j], true, floor));
+            var block = this.initBlock(j, i, (map[i]||[])[j], true, floor);
+            if (block.id != 0 || block.event.trigger)
+                blocks.push(block);
         }
     }
     return blocks;
diff --git a/libs/ui.js b/libs/ui.js
index b5bdfe4e..d055aada 100644
--- a/libs/ui.js
+++ b/libs/ui.js
@@ -1575,11 +1575,9 @@ ui.prototype.drawBookDetail = function (index) {
 ////// 绘制楼层传送器 //////
 ui.prototype.drawFly = function(page) {
 
-    if (page<0) page=0;
-    if (page>=core.status.hero.flyRange.length) page=core.status.hero.flyRange.length-1;
     core.status.event.data = page;
 
-    var floorId = core.status.hero.flyRange[page];
+    var floorId = core.floorIds[page];
     var title = core.status.maps[floorId].title;
 
     core.clearMap('ui');
@@ -1591,12 +1589,12 @@ ui.prototype.drawFly = function(page) {
     core.fillText('ui', '楼层跳跃', 208, 60, '#FFFFFF', "bold 28px "+globalFont);
     core.fillText('ui', '返回游戏', 208, 403, '#FFFFFF', "bold 15px "+globalFont)
     core.fillText('ui', title, 356, 247, '#FFFFFF', "bold 19px "+globalFont);
-    if (page<core.status.hero.flyRange.length-1) {
+    if (core.actions._getNextFlyFloor(1) != page) {
         core.fillText('ui', '▲', 356, 247 - 64, '#FFFFFF', "17px "+globalFont);
         core.fillText('ui', '▲', 356, 247 - 96, '#FFFFFF', "17px "+globalFont);
         core.fillText('ui', '▲', 356, 247 - 96 - 7, '#FFFFFF', "17px "+globalFont);
     }
-    if (page>0) {
+    if (core.actions._getNextFlyFloor(-1) != page) {
         core.fillText('ui', '▼', 356, 247 + 64, '#FFFFFF', "17px "+globalFont);
         core.fillText('ui', '▼', 356, 247 + 96, '#FFFFFF', "17px "+globalFont);
         core.fillText('ui', '▼', 356, 247 + 96 + 7, '#FFFFFF', "17px "+globalFont);
diff --git a/project/data.js b/project/data.js
index cfecf74f..4affc3ea 100644
--- a/project/data.js
+++ b/project/data.js
@@ -95,7 +95,6 @@ var data_a1e2fb4a_e986_4524_b0da_9b7ba7c0874d =
 				"tools": {},
 				"equips": {}
 			},
-			"flyRange": [],
 			"loc": {
 				"direction": "up",
 				"x": 6,
diff --git a/project/items.js b/project/items.js
index 1abd9db9..1c464161 100644
--- a/project/items.js
+++ b/project/items.js
@@ -360,7 +360,7 @@ var items_296f5d02_12fd_4166_a7c1_b5e830c9ee3a =
 	},
 	"useItemEffect": {
 		"book": "core.ui.drawBook(0);",
-		"fly": "core.ui.drawFly(core.status.hero.flyRange.indexOf(core.status.floorId));",
+		"fly": "core.ui.drawFly(core.floorIds.indexOf(core.status.floorId));",
 		"earthquake": "core.removeBlockByIds(core.status.floorId, core.status.event.ui);\ncore.drawMap(core.status.floorId, function () {\n\tcore.drawTip(core.material.items[itemId].name + '使用成功');\n});",
 		"pickaxe": "core.playSound('pickaxe.mp3');\ncore.removeBlockByIds(core.status.floorId, core.status.event.ui);\ncore.drawMap(core.status.floorId, function () {\n\tcore.drawTip(core.material.items[itemId].name + '使用成功');\n});",
 		"icePickaxe": "core.removeBlockByIds(core.status.floorId, core.status.event.ui);\ncore.drawMap(core.status.floorId, function () {\n\tcore.drawTip(core.material.items[itemId].name + '使用成功');\n});",
@@ -389,7 +389,7 @@ var items_296f5d02_12fd_4166_a7c1_b5e830c9ee3a =
 	},
 	"canUseItemEffect": {
 		"book": "true",
-		"fly": "(function () {\n\treturn core.status.hero.flyRange.indexOf(core.status.floorId)>=0 && (core.status.maps[core.status.floorId]||{}).canFlyTo;\n})();",
+		"fly": "(function () {\n\treturn core.status.maps[core.status.floorId].canFlyTo;\n})();",
 		"pickaxe": "(function() {\n\tvar ids = [], id2s = [];\n\tfor (var i in core.status.thisMap.blocks) {\n\t\tvar block = core.status.thisMap.blocks[i];\n\t\tif (!block.disable && core.nearHero(block.x, block.y) && \n\t\t\t(block.event.canBreak || block.event.id == 'yellowWall' || block.event.id=='whiteWall' || block.event.id=='blueWall')) { // 能破哪些墙\n\t\t\t// 四个方向\n\t\t\tif (core.flags.pickaxeFourDirections || (block.x == core.nextX() && block.y == core.nextY()))\n\t\t\t\tids.push(i);\n\t\t\telse id2s.push(i);\n\t\t}\n\t}\n\tif (ids.length>0) {\n\t\tcore.status.event.ui = ids;\n\t\treturn true;\n\t}\n\telse if (id2s.length==1) {\n\t\tcore.status.event.ui = id2s;\n\t\treturn true;\n\t}\n\treturn false;\n})();",
 		"icePickaxe": "(function() {\n\tfor (var i in core.status.thisMap.blocks) {\n\t\tvar block = core.status.thisMap.blocks[i];\n\t\tif (!block.disable && block.x==core.nextX() && block.y==core.nextY() && block.event.id=='ice') {\n\t\t\tcore.status.event.ui = [i];\n\t\t\treturn true;\n\t\t}\n\t}\n\treturn false;\n})();",
 		"bomb": "(function () {\n\tvar ids = [], id2s = [];\n\tfor (var i in core.status.thisMap.blocks) {\n\t\tvar block = core.status.thisMap.blocks[i];\n\t\tif (!block.disable && block.event.cls.indexOf('enemy')==0 && core.nearHero(block.x, block.y)) {\n\t\t\tvar enemy = core.material.enemys[block.event.id];\n\t\t\tif (core.isset(enemy) && enemy.notBomb) continue;\n\t\t\tif (core.flags.bombFourDirections || (block.x==core.nextX() && block.y==core.nextY()))\n\t\t\t\tids.push(i);\n\t\t\telse\n\t\t\t\tid2s.push(i);\n\t\t}\n\t}\n\tif (ids.length>0) {\n\t\tcore.status.event.ui = ids;\n\t\treturn true;\n\t}\n\tif (id2s.length==1) {\n\t\tcore.status.event.ui = id2s;\n\t\treturn true;\n\t}\n\treturn false;\n})();",