set up game loop

game.odin

@@ -0,0 +1,27 @@
+package main
+
+import rl "vendor:raylib"
+
+Game :: struct {
+	running: bool,
+	time:    f32, // total time elapsed
+}
+
+game_init :: proc() -> Game {
+	return Game{running = true, time = 0}
+}
+
+game_update :: proc(g: ^Game, dt: f32) {
+	g.time += dt
+
+	if rl.IsKeyPressed(.ESCAPE) {
+		g.running = false
+	}
+}
+
+game_draw :: proc(g: ^Game) {
+	fps := rl.GetFPS()
+	rl.DrawText(rl.TextFormat("FPS: %i", fps), 10, 36, 20, rl.GREEN)
+	rl.DrawText(rl.TextFormat("Time: %.1fs", g.time), 10, 62, 20, rl.GRAY)
+}
+

main.odin

@@ -8,11 +8,17 @@ main :: proc() {
 
 	rl.SetTargetFPS(60)
 
+	game := game_init()
+
 	for !rl.WindowShouldClose() {
 		rl.BeginDrawing()
 		defer rl.EndDrawing()
 
+		dt := rl.GetFrameTime()
+		game_update(&game, dt)
+
 		rl.ClearBackground({30, 33, 40, 255})
+		game_draw(&game)
 	}
 }