load skin from dropped on card

src/accessories/AttachmentHelper.ttslua

@@ -51,7 +51,7 @@ local BACKGROUNDS = {
     fontcolor = { 1, 1, 1 }
   },
   {
-    title     = "Subject 5U-21 (Suzi)",
+    title     = "Subject 5U-21",
     url       = "http://cloud-3.steamusercontent.com/ugc/2021606446228199363/CE43D58F37C9F48BDD6E6E145FE29BADEFF4DBC5/",
     fontcolor = { 1, 1, 1 }
   },
@@ -99,6 +99,44 @@ function getFontColor()
   return { 1, 1, 1 }
 end
 
+-- attempt to load image from below card when dropped
+function onDrop(playerColor)
+  local pos = self.getPosition():setAt("y", 2)
+  local search = Physics.cast({
+    direction    = { 0, -1, 0 },
+    max_distance = 2,
+    type         = 3,
+    size         = { 0.1, 0.1, 0.1 },
+    origin       = pos
+  })
+
+  local syncName
+  for _, v in ipairs(search) do
+    if v.hit_object.tag == "Card" then
+      syncName = v.hit_object.getName()
+      break
+    end
+  end
+
+  if not syncName then return end
+
+  -- remove level information fron syncName
+  syncName = syncName:gsub("%s%(%d%)", "")
+
+  -- loop through background table
+  for _, bgInfo in ipairs(BACKGROUNDS) do
+    if bgInfo.title == syncName then
+      printToColor("Background for '" .. syncName .. "' loaded!", playerColor, "Green")
+      local customInfo = self.getCustomObject()
+      customInfo.diffuse = bgInfo.url
+      self.setCustomObject(customInfo)
+      self.reload()
+      return
+    end
+  end
+  printToColor("Didn't find background for '" .. syncName .. "'!", playerColor, "Orange")
+end
+
 -- called by context menu to change background image
 function selectImage(color)
   -- generate list of options