%% This is an example. Feel free to copy and reuse as you wish.
-module(hello_sdl).
-export([run/0]).
run() ->
spawn(fun init/0).
init() ->
ok = sdl:start([video]),
ok = sdl:stop_on_exit(),
{ok, Window} = sdl_window:create("Hello SDL", 10, 10, 500, 500, []),
{ok, Renderer} = sdl_renderer:create(Window, -1, [accelerated, present_vsync]),
ok = sdl_renderer:set_draw_color(Renderer, 255, 255, 255, 255),
{ok, Texture} = sdl_texture:create_from_file(Renderer, "erlang.png"),
loop(#{window=>Window, renderer=>Renderer, texture=>Texture}).
loop(State) ->
events_loop(),
render(State),
loop(State).
events_loop() ->
case sdl_events:poll() of
false -> ok;
#{type:=quit} -> terminate();
_ -> events_loop()
end.
render(#{renderer:=Renderer, texture:=Texture}) ->
ok = sdl_renderer:clear(Renderer),
ok = sdl_renderer:copy(Renderer, Texture, undefined, #{x=>100, y=>100, w=>300, h=>300}),
ok = sdl_renderer:present(Renderer).
terminate() ->
init:stop(),
exit(normal).
