99 lines
2.0 KiB
Go
99 lines
2.0 KiB
Go
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package main
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import (
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"image/color"
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"time"
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"sync"
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"github.com/llgcode/draw2d/draw2dimg"
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"github.com/llgcode/draw2d/draw2dkit"
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"github.com/markfarnan/go-canvas/canvas"
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"git.jacknet.io/S.D/Chip-8_Go/chip8"
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)
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var done chan struct{}
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var cvs *canvas.Canvas2d
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var width, height float64 = 64, 32
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var sizeMultiplier = 8
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var drawBuf = [64 * 32]byte{}
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var graphicsLock sync.Mutex
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var sleeptime = 2000
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func main() {
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println("CHIP8 IS HERE!")
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cvs, _ = canvas.NewCanvas2d(false)
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cvs.Create(int(width)*sizeMultiplier, int(height)*sizeMultiplier)
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height = float64(cvs.Height())
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width = float64(cvs.Width())
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// load in a rom!!!
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resp, err := http.Get("https://github.com/dmatlack/chip8/raw/master/roms/games/Space%20Invaders%20%5BDavid%20Winter%5D.ch8")
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if err != nil {
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println("FUCK")
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panic()
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}
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content := make([]byte, resp.ContentLength)
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n, err := resp.Body.Read(content)
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if err != nil {
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println("FUCK")
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panic()
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}
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cpu := chip8.NewCHIP8(content)
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cvs.Start(60, Render)
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i := 0
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for {
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c := make(chan int)
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go timeCycle(c)
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cpu.PerformCycle()
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if cpu.DrawIsNeeded() {
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graphicsLock.Lock()
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drawBuf = cpu.GetGraphicsBuffer()
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graphicsLock.Unlock()
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}
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i++
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if i > 7 {
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cpu.TickTimers()
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i = 0
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}
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<-c
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}
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}
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func timeCycle(c chan int) {
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time.Sleep(sleeptime * time.Microsecond)
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c <- 0
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}
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func Render(gc *draw2dimg.GraphicContext) bool {
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gc.SetFillColor(color.RGBA{0x00, 0x00, 0x00, 0xff})
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gc.Clear()
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gc.SetFillColor(color.RGBA{0x00, 0xff, 0x00, 0xff})
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//gc.SetStrokeColor(color.RGBA{0x00, 0xff, 0x00, 0xff})
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gc.BeginPath()
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//gc.ArcTo(gs.laserX, gs.laserY, gs.laserSize, gs.laserSize, 0, math.Pi*2)
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graphicsLock.Lock()
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defer graphicsLock.Unlock()
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for i, val := range drawBuf {
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if val != 0 {
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x := i % 64
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y := i / 64
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// println("drawing to ", x, y)
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draw2dkit.Rectangle(gc, float64(x*sizeMultiplier), float64(y*sizeMultiplier), float64((x*sizeMultiplier)+sizeMultiplier), float64((y*sizeMultiplier)+sizeMultiplier))
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}
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}
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gc.FillStroke()
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gc.Close()
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return true
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}
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