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main.go
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main.go
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package main
import (
"fmt"
"image/color"
"log"
"os"
"time"
"github.com/cterence/chip8-go/chip8"
"github.com/hajimehoshi/ebiten/v2"
)
type Game struct {
chip8 *chip8.Chip8
keys [16]ebiten.Key
}
func (g *Game) Update() error {
g.chip8.ExecuteOP()
for i, key := range g.keys {
if ebiten.IsKeyPressed(key) {
g.chip8.Key[i] = 1
} else {
g.chip8.Key[i] = 0
}
}
if g.chip8.PlaySound {
playBeep()
g.chip8.SoundTimer = 0
}
if g.chip8.Stop {
os.Exit(0)
}
if g.chip8.DelayTimer > 0 {
time.Sleep(time.Duration(g.chip8.DelayTimer) * time.Millisecond)
g.chip8.DelayTimer = 0
}
return nil
}
func (g *Game) Draw(screen *ebiten.Image) {
for i, pix := range g.chip8.Gfx {
if pix == 1 {
screen.Set(int(i%64), int(i/64), color.White)
} else {
screen.Set(int(i%64), int(i/64), color.Black)
}
}
}
func (g *Game) Layout(outsideWidth, outsideHeight int) (screenWidth, screenHeight int) {
return 64, 32
}
func playBeep() {
// Play beep sound
fmt.Println("BEEP")
}
func main() {
fmt.Println("Launching CHIP-8 Emulator...")
ebiten.SetWindowSize(640, 320)
ebiten.SetWindowTitle("CHIP-8 Emulator")
game := &Game{}
c := chip8.Init()
c.LoadRom(os.Args[1])
game.chip8 = c
game.keys = [16]ebiten.Key{
ebiten.Key1,
ebiten.Key2,
ebiten.Key3,
ebiten.Key4,
ebiten.KeyQ,
ebiten.KeyW,
ebiten.KeyE,
ebiten.KeyR,
ebiten.KeyA,
ebiten.KeyS,
ebiten.KeyD,
ebiten.KeyF,
ebiten.KeyZ,
ebiten.KeyX,
ebiten.KeyC,
ebiten.KeyV,
}
ebiten.SetTPS(500)
if err := ebiten.RunGame(game); err != nil {
log.Fatal(err)
}
}