local loadAssets = [[
local thread = jin.thread.getThread()
local path = thread:demand(1)
local img = jin.graphics.Image(path)
thread:send(2, img)
while(true) do
	if(thread:receive(255)) then 
		break; -- quit thread
	end 
end
]] 

local img = nil 
local loader = nil

jin.core.onLoad = function() 
	loader = jin.thread.Thread("load assets", loadAssets) 
	loader:start()
	loader:send(1, "./icon.png")
	--img = jin.graphics.Image("./icon.png")
end 

jin.core.onEvent = function(e)
	if e.type == "quit" then 
		jin.core.stop()
	end 
end

jin.core.onUpdate = function(dt)
	if loader:receive(2) and img == nil then 
		img = loader:fetch(2)
		loader:send(255, 1)
		loader:remove(2)
	end 
end 

jin.core.onDraw = function()
	if img ~= nil then 
		jin.graphics.draw(img, 20, 20)
	end
end