Restructure following https://github.com/fogleman/nes ideas

main.go

@@ -1,127 +1,16 @@
 package main
 
 import (
-	"fmt"
-	"log"
-	"runtime"
-
-	"github.com/veandco/go-sdl2/sdl"
-	"github.com/veandco/go-sdl2/ttf"
+	"gb-player/ui"
 )
 
-var renderer *sdl.Renderer
-var font *ttf.Font
-
-func init() {
-	runtime.LockOSThread()
-}
-
 func main() {
-	if err := sdl.Init(sdl.INIT_EVERYTHING); err != nil {
-		log.Fatal(err)
-	}
-	defer sdl.Quit()
+	// FIXME(m): Allow specifying rom file on command line
+	// if len(os.Args) != 2 {
+	// 	log.Fatalln("No rom file specified")
+	// }
+	// romPath := os.Args[1]
+	romPath := "rom.gb"
 
-	if err := ttf.Init(); err != nil {
-		log.Fatal((err))
-	}
-	defer ttf.Quit()
-
-	window, err := sdl.CreateWindow(
-		"GB Player",
-		sdl.WINDOWPOS_UNDEFINED,
-		sdl.WINDOWPOS_UNDEFINED,
-		800, 600,
-		sdl.WINDOW_SHOWN)
-	if err != nil {
-		panic(err)
-	}
-	defer window.Destroy()
-
-	renderer, err = sdl.CreateRenderer(window, -1, 0)
-	if err != nil {
-		panic(err)
-	}
-	defer renderer.Destroy()
-	renderer.RenderSetVSync(true)
-
-	font, err = ttf.OpenFont("SourceCodePro.ttf", 18)
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer font.Close()
-	font.SetStyle(ttf.STYLE_BOLD)
-
-	var fps float64
-	var frameCount uint32
-	var startTicks = sdl.GetTicks64()
-	var now uint64
-	var last uint64
-
-	cartridge := Insert("rom.gb")
-	fmt.Println(cartridge)
-
-	running := true
-	for running {
-		for event := sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
-			switch event.(type) {
-			case *sdl.QuitEvent:
-				println("Quit")
-				running = false
-			}
-		}
-
-		last = now
-		now = sdl.GetPerformanceCounter()
-		deltaTime := float64((now - last) * 1000.0 / sdl.GetPerformanceFrequency())
-		_ = deltaTime
-
-		// Clear screen
-		renderer.SetDrawColor(0x63, 0x94, 0xED, 0xff)
-		renderer.Clear()
-
-		// Update state
-		rect := sdl.Rect{X: 100, Y: 100, W: 200, H: 150}
-		renderer.SetDrawColor(0, 0, 255, 255)
-		renderer.FillRect(&rect)
-
-		drawDebugWindow(fps)
-
-		// Present to screen
-		renderer.Present()
-
-		// Calculate framerate
-		frameCount++
-		currentTicks := sdl.GetTicks64()
-		elapsed := currentTicks - startTicks
-
-		if elapsed >= 1000 {
-			fps = float64(frameCount) / (float64(elapsed) / 1000.0)
-
-			// Reset counters
-			frameCount = 0
-			startTicks = currentTicks
-		}
-	}
-}
-
-func drawDebugWindow(fps float64) {
-	var textSurface *sdl.Surface
-	var textTexture *sdl.Texture
-
-	// FPS
-	textSurface, err := font.RenderUTF8Blended(fmt.Sprintf("FPS: %.2f", fps), sdl.Color{R: 0, G: 0, B: 0, A: 255})
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer textSurface.Free()
-
-	textTexture, err = renderer.CreateTextureFromSurface(textSurface)
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer textTexture.Destroy()
-
-	textRect := sdl.Rect{X: 0, Y: 0, W: textSurface.W, H: textSurface.H}
-	renderer.Copy(textTexture, nil, &textRect)
+	ui.Run(romPath)
 }