examples: Call IsRunningSlowly (#354)

examples/additive/main.go

@@ -35,13 +35,13 @@ var (
 )
 
 func update(screen *ebiten.Image) error {
+	if ebiten.IsRunningSlowly() {
+		return nil
+	}
 	w, _ := ebitenImage.Size()
 	const ox = 10
 	const oy = 10
-
-	if err := screen.Fill(color.NRGBA{0x00, 0x40, 0x80, 0xff}); err != nil {
-		return err
-	}
+	screen.Fill(color.NRGBA{0x00, 0x40, 0x80, 0xff})
 	op := &ebiten.DrawImageOptions{}
 	op.GeoM.Translate(ox, oy)
 	screen.DrawImage(ebitenImage, op)

examples/airship/main.go

@@ -194,11 +194,12 @@ func update(screen *ebiten.Image) error {
 	if !rotated {
 		thePlayer.Stabilize()
 	}
-
+	if ebiten.IsRunningSlowly() {
+		return nil
+	}
 	screen.Fill(skyColor)
 	updateGroundImage(groundImage)
 	drawGroundImage(screen, groundImage)
-
 	tutrial := "Space: Move forward\nLeft/Right: Rotate"
 	msg := fmt.Sprintf("FPS: %0.2f\n%s", ebiten.CurrentFPS(), tutrial)
 	ebitenutil.DebugPrint(screen, msg)
@@ -213,24 +214,16 @@ func main() {
 	}
 	w, h := gophersImage.Size()
 	const repeat = 5
-	repeatedGophersImage, err = ebiten.NewImage(w*repeat, h*repeat, ebiten.FilterNearest)
-	if err != nil {
-		log.Fatal(err)
-	}
+	repeatedGophersImage, _ = ebiten.NewImage(w*repeat, h*repeat, ebiten.FilterNearest)
 	for j := 0; j < repeat; j++ {
 		for i := 0; i < repeat; i++ {
 			op := &ebiten.DrawImageOptions{}
 			op.GeoM.Translate(float64(w*i), float64(h*j))
-			if err := repeatedGophersImage.DrawImage(gophersImage, op); err != nil {
-				log.Fatal(err)
-			}
+			repeatedGophersImage.DrawImage(gophersImage, op)
 		}
 	}
 	groundWidth := screenWidth + 70
-	groundImage, err = ebiten.NewImage(groundWidth, screenHeight*2/3+50, ebiten.FilterNearest)
-	if err != nil {
-		log.Fatal(err)
-	}
+	groundImage, _ = ebiten.NewImage(groundWidth, screenHeight*2/3+50, ebiten.FilterNearest)
 	const fogHeight = 8
 	fogRGBA := image.NewRGBA(image.Rect(0, 0, groundWidth, fogHeight))
 	for j := 0; j < fogHeight; j++ {
@@ -245,10 +238,7 @@ func main() {
 			fogRGBA.SetRGBA(i, j, clr)
 		}
 	}
-	fogImage, err = ebiten.NewImageFromImage(fogRGBA, ebiten.FilterNearest)
-	if err != nil {
-		log.Fatal(err)
-	}
+	fogImage, _ = ebiten.NewImageFromImage(fogRGBA, ebiten.FilterNearest)
 	if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Air Ship (Ebiten Demo)"); err != nil {
 		log.Fatal(err)
 	}

examples/alphablending/main.go

@@ -65,7 +65,9 @@ func update(screen *ebiten.Image) error {
 	case 240 < count:
 		diff = float64(480-count) * 0.2
 	}
-
+	if ebiten.IsRunningSlowly() {
+		return nil
+	}
 	screen.Fill(color.NRGBA{0x00, 0x00, 0x80, 0xff})
 	op := &ebiten.DrawImageOptions{}
 	op.ColorM.Scale(1.0, 1.0, 1.0, 0.5)

examples/audio/main.go

@@ -198,7 +198,9 @@ func update(screen *ebiten.Image) error {
 		}
 		musicPlayer.updateVolume()
 	}
-
+	if ebiten.IsRunningSlowly() {
+		return nil
+	}
 	op := &ebiten.DrawImageOptions{}
 	x, y, w, h := playerBarRect()
 	op.GeoM.Translate(float64(x), float64(y))

examples/font/main.go

@@ -89,6 +89,9 @@ func parseFont() error {
 }
 
 func update(screen *ebiten.Image) error {
+	if ebiten.IsRunningSlowly() {
+		return nil
+	}
 	screen.DrawImage(textImage, &ebiten.DrawImageOptions{})
 	return nil
 }

examples/gamepad/main.go

@@ -49,6 +49,9 @@ func update(screen *ebiten.Image) error {
 			pressedButtons = append(pressedButtons, strconv.Itoa(int(b)))
 		}
 	}
+	if ebiten.IsRunningSlowly() {
+		return nil
+	}
 
 	str := `Gamepad
   Axes:

examples/hsv/main.go

@@ -70,6 +70,9 @@ func update(screen *ebiten.Image) error {
 	if ebiten.IsKeyPressed(ebiten.KeyX) {
 		valueInt++
 	}
+	if ebiten.IsRunningSlowly() {
+		return nil
+	}
 	hueInt = clamp(hueInt, -256, 256)
 	saturationInt = clamp(saturationInt, 0, 256)
 	valueInt = clamp(valueInt, 0, 256)

examples/hue/main.go

@@ -37,6 +37,9 @@ var (
 
 func update(screen *ebiten.Image) error {
 	count++
+	if ebiten.IsRunningSlowly() {
+		return nil
+	}
 	w, h := gophersImage.Size()
 	op := &ebiten.DrawImageOptions{}
 	op.GeoM.Translate(float64(screenWidth-w)/2, float64(screenHeight-h)/2)

examples/infinitescroll/main.go

@@ -88,7 +88,9 @@ func drawGroundImage(screen *ebiten.Image, ground *ebiten.Image) {
 
 func update(screen *ebiten.Image) error {
 	theViewport.Move()
-
+	if ebiten.IsRunningSlowly() {
+		return nil
+	}
 	updateGroundImage(groundImage)
 	drawGroundImage(screen, groundImage)
 

examples/keyboard/main.go

@@ -90,6 +90,9 @@ func (p pressedKeysParts) Src(i int) (x0, y0, x1, y1 int) {
 }
 
 func update(screen *ebiten.Image) error {
+	if ebiten.IsRunningSlowly() {
+		return nil
+	}
 	const offsetX, offsetY = 24, 40
 	op := &ebiten.DrawImageOptions{}
 	op.GeoM.Translate(offsetX, offsetY)

examples/life/main.go

@@ -180,6 +180,9 @@ var (
 
 func update(screen *ebiten.Image) error {
 	world.Progress()
+	if ebiten.IsRunningSlowly() {
+		return nil
+	}
 	world.DrawImage(noiseImage)
 	screen.ReplacePixels(noiseImage.Pix)
 	return nil

examples/masking/main.go

@@ -64,7 +64,9 @@ func update(screen *ebiten.Image) error {
 		spotLightY = -spotLightY + 2*maxY
 		spotLightVY = -spotLightVY
 	}
-
+	if ebiten.IsRunningSlowly() {
+		return nil
+	}
 	maskImage.Clear()
 
 	op := &ebiten.DrawImageOptions{}

examples/mosaic/main.go

@@ -37,6 +37,9 @@ var (
 )
 
 func update(screen *ebiten.Image) error {
+	if ebiten.IsRunningSlowly() {
+		return nil
+	}
 	op := &ebiten.DrawImageOptions{}
 	op.GeoM.Scale(1.0/mosaicRatio, 1.0/mosaicRatio)
 	gophersRenderTarget.DrawImage(gophersImage, op)

examples/noise/main.go

@@ -58,6 +58,9 @@ func update(screen *ebiten.Image) error {
 		noiseImage.Pix[4*i+2] = uint8(x >> 8)
 		noiseImage.Pix[4*i+3] = 0xff
 	}
+	if ebiten.IsRunningSlowly() {
+		return nil
+	}
 	screen.ReplacePixels(noiseImage.Pix)
 	ebitenutil.DebugPrint(screen, fmt.Sprintf("FPS: %f", ebiten.CurrentFPS()))
 	return nil

examples/paint/main.go

@@ -62,7 +62,9 @@ func update(screen *ebiten.Image) error {
 	if drawn {
 		count++
 	}
-
+	if ebiten.IsRunningSlowly() {
+		return nil
+	}
 	screen.DrawImage(canvasImage, nil)
 
 	msg := fmt.Sprintf("(%d, %d)", mx, my)

examples/perspective/main.go

@@ -55,6 +55,9 @@ func (p parts) Src(i int) (x0, y0, x1, y1 int) {
 }
 
 func update(screen *ebiten.Image) error {
+	if ebiten.IsRunningSlowly() {
+		return nil
+	}
 	op := &ebiten.DrawImageOptions{
 		ImageParts: &parts{gophersImage},
 	}

examples/piano/main.go

@@ -207,7 +207,9 @@ func update(screen *ebiten.Image) error {
 			return err
 		}
 	}
-
+	if ebiten.IsRunningSlowly() {
+		return nil
+	}
 	screen.Fill(color.RGBA{0x80, 0x80, 0xc0, 0xff})
 	screen.DrawImage(imagePiano, nil)
 

examples/rotate/main.go

@@ -37,6 +37,9 @@ var (
 
 func update(screen *ebiten.Image) error {
 	count++
+	if ebiten.IsRunningSlowly() {
+		return nil
+	}
 	w, h := gophersImage.Size()
 	op := &ebiten.DrawImageOptions{}
 	op.GeoM.Translate(-float64(w)/2, -float64(h)/2)

examples/sinewave/main.go

@@ -99,6 +99,9 @@ func update(screen *ebiten.Image) error {
 			return err
 		}
 	}
+	if ebiten.IsRunningSlowly() {
+		return nil
+	}
 	msg := fmt.Sprintf("FPS: %0.2f\nThis is an example using infinite audio stream.", ebiten.CurrentFPS())
 	ebitenutil.DebugPrint(screen, msg)
 	if err := audioContext.Update(); err != nil {

examples/windowsize/main.go

@@ -86,6 +86,10 @@ func update(screen *ebiten.Image) error {
 	ebiten.SetScreenSize(screenWidth, screenHeight)
 	ebiten.SetScreenScale(screenScale)
 
+	if ebiten.IsRunningSlowly() {
+		return nil
+	}
+
 	screen.Fill(color.RGBA{0x80, 0x80, 0xc0, 0xff})
 	w, h := gophersImage.Size()
 	w2, h2 := screen.Size()