1 files changed, 0 insertions, 152 deletions
diff --git a/cmd/gones/main.go b/cmd/gones/main.go
deleted file mode 100644
index 0a1fbe7..0000000
--- a/cmd/gones/main.go
+++ /dev/null
@@ -1,152 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"log"
-	"os"
-	"path/filepath"
-	"runtime"
-	"time"
-
-	"github.com/veandco/go-sdl2/sdl"
-
-	"crecher.net/gones/v2/cart"
-	"crecher.net/gones/v2/nes"
-	"crecher.net/gones/v2/ppu"
-)
-
-const (
-	windowScale = 3
-
-	// nes: 1789773 cpu cycles per sec / 29780.5 cycles per frame
-	framesPerSecond = 60.0988
-)
-
-func init() {
-	// sdl wants to be driven from the main thread
-	runtime.LockOSThread()
-}
-
-func main() {
-	if len(os.Args) != 2 {
-		fmt.Fprintf(os.Stderr, "usage: %s <rom.nes>\n", os.Args[0])
-		os.Exit(2)
-	}
-	if err := run(os.Args[1]); err != nil {
-		log.Fatal(err)
-	}
-}
-
-func run(romPath string) error {
-	c, err := cart.Load(romPath)
-	if err != nil {
-		return err
-	}
-	console := nes.New(c)
-	name := filepath.Base(romPath)
-
-	if err := sdl.Init(sdl.INIT_VIDEO); err != nil {
-		return err
-	}
-	defer sdl.Quit()
-
-	window, err := sdl.CreateWindow("gones - "+name,
-		sdl.WINDOWPOS_CENTERED, sdl.WINDOWPOS_CENTERED,
-		ppu.ScreenWidth*windowScale, ppu.ScreenHeight*windowScale,
-		sdl.WINDOW_SHOWN|sdl.WINDOW_RESIZABLE)
-	if err != nil {
-		return err
-	}
-	defer window.Destroy()
-
-	renderer, err := sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED|sdl.RENDERER_PRESENTVSYNC)
-	if err != nil {
-		return err
-	}
-	defer renderer.Destroy()
-
-	// the window can be resized freely, sdl scales (and letterboxes) the 256x240 picture
-	if err := renderer.SetLogicalSize(ppu.ScreenWidth, ppu.ScreenHeight); err != nil {
-		return err
-	}
-
-	// framebuffer is ARGB8888, streaming since we rewrite it every frame
-	texture, err := renderer.CreateTexture(sdl.PIXELFORMAT_ARGB8888, sdl.TEXTUREACCESS_STREAMING,
-		ppu.ScreenWidth, ppu.ScreenHeight)
-	if err != nil {
-		return err
-	}
-	defer texture.Destroy()
-
-	fps := framesPerSecond // a variable, a constant would have to be a whole number of nanoseconds
-	frameTime := time.Duration(float64(time.Second) / fps)
-	next := time.Now()
-	fpsStart, frames := next, 0
-	jamShown := false
-
-	for {
-		for e := sdl.PollEvent(); e != nil; e = sdl.PollEvent() {
-			switch ev := e.(type) {
-			case *sdl.QuitEvent:
-				return nil
-			case *sdl.KeyboardEvent:
-				if ev.Type == sdl.KEYDOWN && ev.Keysym.Sym == sdl.K_ESCAPE {
-					return nil
-				}
-			}
-		}
-
-		console.SetButtons(0, heldButtons())
-		console.StepFrame()
-
-		// UpdateRGBA multiplies the pitch by 4 itself, so this is in pixels, not bytes
-		if err := texture.UpdateRGBA(nil, console.PPU.Framebuffer(), ppu.ScreenWidth); err != nil {
-			return err
-		}
-		renderer.Clear()
-		renderer.Copy(texture, nil, nil)
-		renderer.Present()
-
-		if console.CPU.Jammed && !jamShown {
-			window.SetTitle("gones - " + name + " - CPU jammed (reset needed)")
-			jamShown = true
-		}
-
-		frames++
-		if elapsed := time.Since(fpsStart); elapsed >= time.Second && !jamShown {
-			window.SetTitle(fmt.Sprintf("gones - %s - %.1f fps", name, float64(frames)/elapsed.Seconds()))
-			fpsStart, frames = time.Now(), 0
-		}
-
-		// vsync alone would run too fast on a 120/144hz monitor, so pace to the nes frame rate
-		next = next.Add(frameTime)
-		if wait := time.Until(next); wait > 0 {
-			time.Sleep(wait)
-		} else if wait < -100*time.Millisecond {
-			next = time.Now() // fell far behind (window drag etc), don't try to catch up
-		}
-	}
-}
-
-// keyboard layout for controller 1
-var keyMap = map[sdl.Scancode]uint8{
-	sdl.SCANCODE_X:      nes.ButtonA,
-	sdl.SCANCODE_Y:      nes.ButtonB,
-	sdl.SCANCODE_RSHIFT: nes.ButtonSelect,
-	sdl.SCANCODE_RETURN: nes.ButtonStart,
-	sdl.SCANCODE_UP:     nes.ButtonUp,
-	sdl.SCANCODE_DOWN:   nes.ButtonDown,
-	sdl.SCANCODE_LEFT:   nes.ButtonLeft,
-	sdl.SCANCODE_RIGHT:  nes.ButtonRight,
-}
-
-func heldButtons() uint8 {
-	keys := sdl.GetKeyboardState()
-	var b uint8
-	for scancode, button := range keyMap {
-		if keys[scancode] != 0 {
-			b |= button
-		}
-	}
-	return b
-}