自定义背景拖入无法识别的格式时会提示

2021-11-28 05:20:18 +08:00
parent f8b9f30fd6
commit 73145b4e5e
10 changed files with 31 additions and 14 deletions
--- a/parts/backgrounds/custom.lua
+++ b/parts/backgrounds/custom.lua
@@ -4,10 +4,12 @@ local back={}
 local image=false
 local alpha=.26
 function back.draw()
-    gc.clear(.1,.1,.1)
-    gc.setColor(1,1,1,alpha)
-    local k=math.max(SCR.w/image:getWidth(),SCR.h/image:getHeight())
-    mDraw(image,SCR.w*.5,SCR.h*.5,nil,k)
+    if image then
+        gc.clear(.1,.1,.1)
+        gc.setColor(1,1,1,alpha)
+        local k=math.max(SCR.w/image:getWidth(),SCR.h/image:getHeight())
+        mDraw(image,SCR.w*.5,SCR.h*.5,nil,k)
+    end
 end
 function back.event(a,img)
    if a then alpha=a end