golang烟花代码

Golang烟花代码是一种使用Go语言编写的模拟烟花爆炸效果的程序。它通过使用Golang的图形库和并发机制，实现了烟花在屏幕上绽放的效果。

以下是一个简单的Golang烟花代码示例：

package main

import (
	"fmt"
	"math/rand"
	"time"

	"github.com/fogleman/gg"
)

const (
	width  = 800
	height = 600
)

type Particle struct {
	X, Y     float64
	VX, VY   float64
	Life     int
	Color    string
	Sparkles []Sparkle
}

type Sparkle struct {
	X, Y   float64
	VX, VY float64
	Life   int
	Color  string
}

func main() {
	dc := gg.NewContext(width, height)
	dc.SetRGB(0, 0, 0)
	dc.Clear()

	particles := make([]Particle, 0)

	for i := 0; i < 100; i++ {
		p := Particle{
			X:     width / 2,
			Y:     height,
			VX:    rand.Float64()*6 - 3,
			VY:    -rand.Float64()*5 - 5,
			Life:  rand.Intn(60) + 60,
			Color: fmt.Sprintf("#%06x", rand.Intn(0xffffff)),
		}
		particles = append(particles, p)
	}

	for len(particles) > 0 {
		dc.Clear()
		for i := len(particles) - 1; i >= 0; i-- {
			p := &particles[i]
			dc.SetRGB255(parseColor(p.Color))
			dc.DrawPoint(p.X, p.Y, 1)
			p.X += p.VX
			p.Y += p.VY
			p.VY += 0.1
			p.Life--
			if p.Life <= 0 {
				particles = append(particles[:i], particles[i+1:]...)
				continue
			}
			for j := len(p.Sparkles) - 1; j >= 0; j-- {
				s := &p.Sparkles[j]
				dc.SetRGB255(parseColor(s.Color))
				dc.DrawPoint(s.X, s.Y, 1)
				s.X += s.VX
				s.Y += s.VY
				s.VY += 0.1
				s.Life--
				if s.Life <= 0 {
					p.Sparkles = append(p.Sparkles[:j], p.Sparkles[j+1:]...)
				}
			}
			if rand.Float64() < 0.02 {
				s := Sparkle{
					X:     p.X,
					Y:     p.Y,
					VX:    rand.Float64()*6 - 3,
					VY:    rand.Float64()*6 - 3,
					Life:  rand.Intn(20) + 20,
					Color: fmt.Sprintf("#%06x", rand.Intn(0xffffff)),
				}
				p.Sparkles = append(p.Sparkles, s)
			}
		}
		dc.Stroke()
		dc.SavePNG("fireworks.png")
		time.Sleep(time.Millisecond * 10)
	}
}

func parseColor(color string) (int, int, int) {
	var r, g, b int
	fmt.Sscanf(color, "#%02x%02x%02x", &r, &g, &b)
	return r, g, b
}

这段代码使用了第三方库`github.com/fogleman/gg`来进行图形绘制。它模拟了烟花的爆炸效果，通过不断更新粒子的位置和颜色，实现了烟花在屏幕上绽放的效果。