diff --git a/.vscode/settings.json b/.vscode/settings.json
index a239ff2..1deeeb5 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -5,7 +5,8 @@
     },
     "Lua.workspace.library": [
         "${3rd}/love2d/library",
-        "C:/Users/Harry/AppData/Roaming/Code/User/globalStorage/sumneko.lua/addonManager/addons/love2d/module/library"
+        "C:/Users/Harry/AppData/Roaming/Code/User/globalStorage/sumneko.lua/addonManager/addons/love2d/module/library",
+        "C:/Users/Harry/AppData/Roaming/Code/User/globalStorage/sumneko.lua/addonManager/addons/lldebugger/module/library"
     ],
     "Lua.workspace.checkThirdParty": false,
     "githubPullRequests.ignoredPullRequestBranches": [
diff --git a/libs/simple-button.lua b/libs/simple-button.lua
index b7a5e2e..226ccf6 100644
--- a/libs/simple-button.lua
+++ b/libs/simple-button.lua
@@ -125,6 +125,7 @@ end
 ---Trigger release action, don't need ``self._hovering`` to ``true``
 ---@param isTouch? boolean Button just released by mouse?
 function button:release(x, y, isTouch)
+    error()
     local hovering = isTouch and self:isHovering(x, y) or self._hovering
 
     if hovering and self._pressed then
diff --git a/main.lua b/main.lua
index 6ca9bd9..b9752bc 100644
--- a/main.lua
+++ b/main.lua
@@ -51,9 +51,12 @@ function love.load()
     require "scene"
     require "game.vctrl"   -- VCTRL
 
-    SCENE.update = function()
+    function SCENE.update()
         SCENE = SETTINGS.firstTime and InputConfigScene(true) or TitleScene()
     end
+    function SCENE.render()
+        love.graphics.draw(LOADING_IMAGE_FILE,0,0,0,0.5)
+    end
 
     -- VCTRL.toggle(love.system.getOS()=='Android' or true)
     VCTRL.new{ -- up down left right --- right left down up
diff --git a/scene.lua b/scene.lua
index 25c1d0c..ea8220d 100644
--- a/scene.lua
+++ b/scene.lua
@@ -4,9 +4,7 @@ SCENE = Object:extend()
 
 function SCENE:new() end
 function SCENE:update() end
-function SCENE:render()
-    love.graphics.draw(LOADING_IMAGE_FILE,0,0,0,0.5)
-end
+function SCENE:render() end
 
 -- You can use the class SCENE_onInput to show suggestions for `e` table