121 lines
3.3 KiB
Go
121 lines
3.3 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 raylib.Vector2
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Radius float32
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Alpha float32
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Speed float32
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Color raylib.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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raylib.SetConfigFlags(raylib.FlagMsaa4xHint) // NOTE: Try to enable MSAA 4X
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raylib.InitWindow(screenWidth, screenHeight, "raylib [audio] example - module playing (streaming)")
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raylib.InitAudioDevice()
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colors := []raylib.Color{
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raylib.Orange, raylib.Red, raylib.Gold, raylib.Lime, raylib.Blue,
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raylib.Violet, raylib.Brown, raylib.LightGray, raylib.Pink,
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raylib.Yellow, raylib.Green, raylib.SkyBlue, raylib.Purple, raylib.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(raylib.GetRandomValue(10, 40))
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x := raylib.GetRandomValue(int32(c.Radius), screenWidth-int32(c.Radius))
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y := raylib.GetRandomValue(int32(c.Radius), screenHeight-int32(c.Radius))
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c.Position = raylib.NewVector2(float32(x), float32(y))
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c.Speed = float32(raylib.GetRandomValue(1, 100)) / 20000.0
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c.Color = colors[raylib.GetRandomValue(0, int32(len(colors)-1))]
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circles[i] = c
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}
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xm := raylib.LoadMusicStream("mini1111.xm")
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raylib.PlayMusicStream(xm)
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pause := false
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raylib.SetTargetFPS(60)
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for !raylib.WindowShouldClose() {
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raylib.UpdateMusicStream(xm) // Update music buffer with new stream data
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// Restart music playing (stop and play)
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if raylib.IsKeyPressed(raylib.KeySpace) {
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raylib.StopMusicStream(xm)
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raylib.PlayMusicStream(xm)
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}
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// Pause/Resume music playing
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if raylib.IsKeyPressed(raylib.KeyP) {
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pause = !pause
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if pause {
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raylib.PauseMusicStream(xm)
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} else {
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raylib.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(raylib.GetMusicTimePlayed(xm)/raylib.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(raylib.GetRandomValue(10, 40))
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circles[i].Position.X = float32(raylib.GetRandomValue(int32(circles[i].Radius), screenWidth-int32(circles[i].Radius)))
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circles[i].Position.Y = float32(raylib.GetRandomValue(int32(circles[i].Radius), screenHeight-int32(circles[i].Radius)))
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circles[i].Color = colors[raylib.GetRandomValue(0, 13)]
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circles[i].Speed = float32(raylib.GetRandomValue(1, 100)) / 20000.0
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}
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}
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raylib.BeginDrawing()
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raylib.ClearBackground(raylib.RayWhite)
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for i := MaxCircles - 1; i >= 0; i-- {
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raylib.DrawCircleV(circles[i].Position, float32(circles[i].Radius), raylib.Fade(circles[i].Color, circles[i].Alpha))
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}
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// Draw time bar
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raylib.DrawRectangle(20, screenHeight-20-12, screenWidth-40, 12, raylib.LightGray)
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raylib.DrawRectangle(20, screenHeight-20-12, timePlayed, 12, raylib.Maroon)
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raylib.DrawRectangleLines(20, screenHeight-20-12, screenWidth-40, 12, raylib.Gray)
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raylib.EndDrawing()
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}
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raylib.UnloadMusicStream(xm)
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raylib.CloseAudioDevice()
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raylib.CloseWindow()
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}
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