65 lines
1.2 KiB
Go
65 lines
1.2 KiB
Go
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package main
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import (
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"flag"
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"math/rand"
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"time"
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"golang.org/x/image/colornames"
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"github.com/faiface/pixel"
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"github.com/faiface/pixel/examples/community/game_of_life/life"
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"github.com/faiface/pixel/imdraw"
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"github.com/faiface/pixel/pixelgl"
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)
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var (
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size *int
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windowSize *float64
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frameRate *int64
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)
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func init() {
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rand.Seed(time.Now().UnixNano())
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size = flag.Int("size", 5, "The size of each cell")
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windowSize = flag.Float64("windowSize", 800, "The pixel size of one side of the grid")
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frameRate = flag.Int64("frameRate", 33, "The framerate in milliseconds")
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flag.Parse()
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}
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func main() {
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pixelgl.Run(run)
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}
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func run() {
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cfg := pixelgl.WindowConfig{
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Title: "Pixel Rocks!",
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Bounds: pixel.R(0, 0, *windowSize, *windowSize),
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VSync: true,
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}
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win, err := pixelgl.NewWindow(cfg)
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if err != nil {
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panic(err)
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}
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win.Clear(colornames.White)
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// since the game board is square, rows and cols will be the same
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rows := int(*windowSize) / *size
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gridDraw := imdraw.New(nil)
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game := life.NewLife(rows, *size)
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last := time.Now()
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for !win.Closed() {
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// game loop
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if time.Since(last).Nanoseconds() > *frameRate {
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gridDraw.Clear()
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game.A.Draw(gridDraw)
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gridDraw.Draw(win)
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game.Step()
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last = time.Now()
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}
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win.Update()
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}
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}
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