abstracting to engine package

engine/app.odin

@@ -0,0 +1,56 @@
+package engine
+
+import "core:fmt"
+import sdl "vendor:sdl3"
+
+App :: struct {
+	window:   ^sdl.Window,
+	renderer: ^sdl.Renderer,
+}
+
+init :: proc(app: ^App, title: cstring, width, height: i32) -> bool {
+	if !sdl.Init({.VIDEO}) {
+		fmt.eprintfln("SDL_Init failed: %s", sdl.GetError())
+		return false
+	}
+
+	if !sdl.CreateWindowAndRenderer(title, width, height, {}, &app.window, &app.renderer) {
+		fmt.eprintfln("CreateWindowAndRenderer failed: %s", sdl.GetError())
+		return false
+	}
+
+	return true
+}
+
+shutdown :: proc(app: ^App) {
+	if app.renderer != nil do sdl.DestroyRenderer(app.renderer)
+	if app.window != nil do sdl.DestroyWindow(app.window)
+
+	sdl.Quit()
+	app^ = {}
+}
+
+pump_events :: proc() -> bool {
+	event: sdl.Event
+
+	for sdl.PollEvent(&event) {
+		if event.type == .QUIT {
+			return false
+		}
+	}
+
+	return true
+}
+
+begin_frame :: proc(app: ^App, r: u8 = 30, g: u8 = 30, b: u8 = 40, a: u8 = 255) {
+	sdl.SetRenderDrawColor(app.renderer, r, g, b, a)
+	sdl.RenderClear(app.renderer)
+}
+
+end_frame :: proc(app: ^App) {
+	sdl.RenderPresent(app.renderer)
+}
+
+renderer :: proc(app: ^App) -> ^sdl.Renderer {
+	return app.renderer
+}