step

examples/audio/module_playing/main.go

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