Initial commit

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