Update lib/tilesheet.lua

You know.. maybe that "setting up a new one" stuff shouldn't be IN the library at all. It's just clunking up loading.

lib/tilesheet.lua

@@ -19,43 +19,40 @@ local tile_metatable = {
 }
 
 local tilesheet.load = function(data_or_path)
-  local tile_image, tile_size
+  local tile_image, tile_size, tile_usage
   local tiles = {}
 
   if type(data_or_path) == "table" then
     tile_image = load_image(data_or_path.image_path)
     tile_size = data_or_path.tile_size
 
-    for name, tile_data in pairs(data_or_path.tiles) do
-      tiles[name] = setmetatable({
-        image = tile_image,
-        quad = love.graphics.newQuad( (tile_data.x - 1) * tile_size, (tile_data.y - 1) * tile_size, tile_size, tile_size, tile_image ),
-      }, tile_metatable)
-    end
-  else
-    tile_image = load_image(data_or_path)
-  end
-
-  -- this mess feels kinda wasteful/repetitive
     local image_width, image_height = tile_image:getDimensions()
-  local tile_usage = {}
+    tile_usage = {}
     for x = 1, image_width / tile_size do
       tile_usage[x] = {}
       for y = 1, image_height / tile_size do
         tile_usage[x][y] = false
       end
     end
-  if type(data_or_path) == "table" then
+
     for name, tile_data in pairs(data_or_path.tiles) do
+      tiles[name] = setmetatable({
+        image = tile_image,
+        quad = love.graphics.newQuad( (tile_data.x - 1) * tile_size, (tile_data.y - 1) * tile_size, tile_size, tile_size, tile_image ),
+      }, tile_metatable)
+
       tile_usage[tile_data.x][tile_data.y] = true
     end
+
+  else
+    tile_image = load_image(data_or_path)
   end
 
   tilesheet.active_sheet = {
     image = tile_image,
-    size = tile_size,
-    tiles = tiles,
-    tile_usage = tile_usage,
+    size = tile_size,          -- unset on new
+    tiles = tiles,             -- empty on new
+    tile_usage = tile_usage,   -- unset on new
   }
 
   return tiles