121 lines
3 KiB
Go
121 lines
3 KiB
Go
package main
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import (
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"github.com/gen2brain/raylib-go/raylib"
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)
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const maxCircles = 64
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type circleWave struct {
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Position rl.Vector2
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Radius float32
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Alpha float32
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Speed float32
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Color rl.Color
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}
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func main() {
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screenWidth := int32(800)
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screenHeight := int32(450)
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rl.SetConfigFlags(rl.FlagMsaa4xHint) // NOTE: Try to enable MSAA 4X
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rl.InitWindow(screenWidth, screenHeight, "raylib [audio] example - module playing (streaming)")
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rl.InitAudioDevice()
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colors := []rl.Color{
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rl.Orange, rl.Red, rl.Gold, rl.Lime, rl.Blue,
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rl.Violet, rl.Brown, rl.LightGray, rl.Pink,
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rl.Yellow, rl.Green, rl.SkyBlue, rl.Purple, rl.Beige,
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}
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circles := make([]circleWave, maxCircles)
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for i := maxCircles - 1; i >= 0; i-- {
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c := circleWave{}
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c.Alpha = 0
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c.Radius = float32(rl.GetRandomValue(10, 40))
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x := rl.GetRandomValue(int32(c.Radius), screenWidth-int32(c.Radius))
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y := rl.GetRandomValue(int32(c.Radius), screenHeight-int32(c.Radius))
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c.Position = rl.NewVector2(float32(x), float32(y))
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c.Speed = float32(rl.GetRandomValue(1, 100)) / 20000.0
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c.Color = colors[rl.GetRandomValue(0, int32(len(colors)-1))]
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circles[i] = c
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}
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xm := rl.LoadMusicStream("mini1111.xm")
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rl.PlayMusicStream(xm)
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pause := false
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rl.SetTargetFPS(60)
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for !rl.WindowShouldClose() {
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rl.UpdateMusicStream(xm) // Update music buffer with new stream data
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// Restart music playing (stop and play)
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if rl.IsKeyPressed(rl.KeySpace) {
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rl.StopMusicStream(xm)
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rl.PlayMusicStream(xm)
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}
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// Pause/Resume music playing
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if rl.IsKeyPressed(rl.KeyP) {
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pause = !pause
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if pause {
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rl.PauseMusicStream(xm)
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} else {
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rl.ResumeMusicStream(xm)
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}
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}
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// Get timePlayed scaled to bar dimensions
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timePlayed := int32(rl.GetMusicTimePlayed(xm)/rl.GetMusicTimeLength(xm)*float32(screenWidth-40)) * 2
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// Color circles animation
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for i := maxCircles - 1; (i >= 0) && !pause; i-- {
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circles[i].Alpha += circles[i].Speed
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circles[i].Radius += circles[i].Speed * 10.0
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if circles[i].Alpha > 1.0 {
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circles[i].Speed *= -1
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}
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if circles[i].Alpha <= 0.0 {
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circles[i].Alpha = 0.0
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circles[i].Radius = float32(rl.GetRandomValue(10, 40))
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circles[i].Position.X = float32(rl.GetRandomValue(int32(circles[i].Radius), screenWidth-int32(circles[i].Radius)))
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circles[i].Position.Y = float32(rl.GetRandomValue(int32(circles[i].Radius), screenHeight-int32(circles[i].Radius)))
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circles[i].Color = colors[rl.GetRandomValue(0, 13)]
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circles[i].Speed = float32(rl.GetRandomValue(1, 100)) / 20000.0
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}
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}
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rl.BeginDrawing()
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rl.ClearBackground(rl.RayWhite)
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for i := maxCircles - 1; i >= 0; i-- {
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rl.DrawCircleV(circles[i].Position, float32(circles[i].Radius), rl.Fade(circles[i].Color, circles[i].Alpha))
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}
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// Draw time bar
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rl.DrawRectangle(20, screenHeight-20-12, screenWidth-40, 12, rl.LightGray)
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rl.DrawRectangle(20, screenHeight-20-12, timePlayed, 12, rl.Maroon)
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rl.DrawRectangleLines(20, screenHeight-20-12, screenWidth-40, 12, rl.Gray)
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rl.EndDrawing()
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}
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rl.UnloadMusicStream(xm)
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rl.CloseAudioDevice()
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rl.CloseWindow()
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}
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