libretro/lutro-platformer
1
0
Fork 0
mirror of https://github.com/libretro/lutro-platformer.git synced 2024-11-23 08:09:51 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Use caching in the map drawing function

Browse Source
This commit is contained in:
Jean-André Santoni 2017-06-28 22:03:07 +02:00
parent ead457f9b0
commit 3dc814ef2a
1 changed files with 16 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
tiled.lua
View File

@ -11,6 +11,21 @@ function tiled_load(filename)
tileset.sh = tileset.surface:getHeight()
end
-- cache the corresponding tileset for each tile
map.tileset_for_id = {}
for i = 1, #map.layers do
local layer = map.layers[i]
if layer.type == "tilelayer" then
local data = layer.data
for j = 1, #data do
local id = data[j]
if (id > 0) then
map.tileset_for_id[id] = tiled_get_tileset(map, id)
end
end
end
end
return map
end
@ -32,7 +47,7 @@ function tiled_draw_layer(layer)
if (id > 0) then
local y = math.floor((j-1) / layer.width) * map.tileheight
local x = ((j-1) % layer.width) * map.tilewidth
local t = tiled_get_tileset(map, id)
local t = map.tileset_for_id[id]
local tw = map.tilewidth
local th = map.tileheight
local sw = t.sw