package main

import "core:fmt"
import "vendor:sdl2"

WIDTH :: 1600
HEIGHT :: 900

Game :: struct {
	render: ^sdl2.Renderer,
	time:   f64,
	dt:     f64,
}

get_time :: proc() -> f64 {
	return f64(sdl2.GetPerformanceCounter()) * 1000 / f64(sdl2.GetPerformanceFrequency())
}

main :: proc() {
	assert(sdl2.Init(sdl2.INIT_VIDEO) == 0, sdl2.GetErrorString())
	defer sdl2.Quit()

	window := sdl2.CreateWindow("Game", 0, 0, 1600, 900, sdl2.WINDOW_SHOWN)
	assert(window != nil, sdl2.GetErrorString())
	defer sdl2.DestroyWindow(window)

	render := sdl2.CreateRenderer(window, -1, sdl2.RENDERER_ACCELERATED)
	assert(render != nil, sdl2.GetErrorString())

	tickrate := 240.0
	ticktime := 1000.0 / tickrate

	game := Game {
		render = render,
		time   = get_time(),
		dt     = ticktime,
	}

	for {
		event: sdl2.Event
		for sdl2.PollEvent(&event) {
			#partial switch event.type {
			case .QUIT:
				return

			}
		}

		sdl2.SetRenderDrawColor(render, 0, 0, 0, 0)
		sdl2.RenderClear(render)
		sdl2.RenderPresent(render)
	}

}