Updated exit condition. Added interactive mosaic effect.

examples/splashmenu/scenes/bsoft.go

@@ -21,6 +21,9 @@ const (
 	maxGlitchOffset     = 25
 	minGlitchInterval   = 60
 	maxGlitchTimeOffset = 15
+	//in seconds
+	fadeTimer  = 1.0
+	fadeOffset = 2.0
 )
 
 var (
@@ -56,6 +59,46 @@ func init() {
 	glitchTimer = 15
 }
 
+type Fader struct {
+	Curtain *ebiten.Image
+	counter int
+	timer   float32
+	offset  float32
+	alpha   float32
+	fps     float32
+}
+
+func NewFader(x, y int, t, offset float32) Fader {
+	f := Fader{
+		Curtain: ebiten.NewImage(x, y),
+		timer:   t,
+		counter: 0,
+		alpha:   0.0,
+		fps:     60,
+		offset:  offset,
+	}
+	f.Curtain.Fill(color.RGBA{0x00, 0x00, 0x00, 0xFF})
+	return f
+}
+func (f *Fader) Update() {
+	f.counter++
+
+	f.alpha = (float32(f.counter) - (f.offset * f.fps)) / (f.timer * f.fps)
+	if f.alpha < 0 {
+		f.alpha = 0
+	}
+}
+
+func (f *Fader) Draw(img *ebiten.Image) {
+	op := &ebiten.DrawImageOptions{}
+	op.ColorScale.Scale(1, 1, 1, f.alpha)
+	img.DrawImage(f.Curtain, op)
+}
+
+func (f *Fader) IsComplete() bool {
+	return f.alpha > 1.0
+}
+
 type Bsoft struct {
 	Dimensions   groovy.Area
 	events       map[groovy.SceneEvent]func()
@@ -64,6 +107,7 @@ type Bsoft struct {
 	renderTarget *ebiten.Image
 	mosaicRatio  uint
 	countDown    uint
+	curtain      Fader
 }
 
 func NewBsoft() Bsoft {
@@ -75,9 +119,54 @@ func NewBsoft() Bsoft {
 	}
 }
 
+func (b *Bsoft) Update() error {
+	b.increment++
+
+	var keysPressed []ebiten.Key
+	keysPressed = inpututil.AppendPressedKeys(keysPressed[:0])
+
+	for _, k := range keysPressed {
+		switch k {
+		case ebiten.KeyUp:
+			b.mosaicRatio = b.mosaicRatio + 1
+		case ebiten.KeyDown:
+			if b.mosaicRatio > 1 {
+				b.mosaicRatio = b.mosaicRatio - 1
+			}
+		case ebiten.KeyQ:
+			if b.events[groovy.COMPLETED] != nil {
+				b.events[groovy.COMPLETED]()
+			}
+		default:
+		}
+
+	}
+
+	if b.curtain.IsComplete() {
+		if b.events[groovy.COMPLETED] != nil {
+			b.events[groovy.COMPLETED]()
+		}
+	}
+	b.curtain.Update()
+
+	return nil
+}
+
 func (b *Bsoft) Draw(screen *ebiten.Image) {
 	b.DrawGlitchLogo(screen)
 	b.DrawGlitchLogoText(screen)
+	b.curtain.Draw(screen)
+}
+
+func (b *Bsoft) SetEventHandler(event groovy.SceneEvent, f func()) {
+	b.events[event] = f
+}
+
+// sets sene dimensions
+func (b *Bsoft) SetDimensions(a groovy.Area) {
+	b.Dimensions = a
+	b.renderTarget = ebiten.NewImage(imgDimensions.Width, imgDimensions.Height)
+	b.curtain = NewFader(a.Width, a.Height, fadeTimer, fadeOffset)
 }
 
 func (b *Bsoft) DrawGlitchLogo(screen *ebiten.Image) {
@@ -135,39 +224,3 @@ func getRandomDirection() int {
 	}
 	return 1
 }
-
-func (b *Bsoft) Update() error {
-	b.increment++
-
-	var keysPressed []ebiten.Key
-	keysPressed = inpututil.AppendPressedKeys(keysPressed[:0])
-
-	for _, k := range keysPressed {
-		switch k {
-		case ebiten.KeyUp:
-			b.mosaicRatio = b.mosaicRatio + 1
-		case ebiten.KeyDown:
-			if b.mosaicRatio > 1 {
-				b.mosaicRatio = b.mosaicRatio - 1
-			}
-		case ebiten.KeyQ:
-			if b.events[groovy.COMPLETED] != nil {
-				b.events[groovy.COMPLETED]()
-			}
-		default:
-		}
-
-	}
-
-	return nil
-}
-
-// sets sene dimensions
-func (b *Bsoft) SetDimensions(a groovy.Area) {
-	b.Dimensions = a
-	b.renderTarget = ebiten.NewImage(imgDimensions.Width, imgDimensions.Height)
-}
-
-func (b *Bsoft) SetEventHandler(event groovy.SceneEvent, f func()) {
-	b.events[event] = f
-}