doc: Update examples (#354)

docs/examples/alphablending.html

@@ -78,7 +78,9 @@ 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)

docs/examples/audio.html

@@ -211,7 +211,9 @@ 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))

docs/examples/font.html

@@ -102,6 +102,9 @@ func parseFont() error {
 }
 
 func update(screen *ebiten.Image) error {
+        if ebiten.IsRunningSlowly() {
+                return nil
+        }
         screen.DrawImage(textImage, &ebiten.DrawImageOptions{})
         return nil
 }

docs/examples/gamepad.html

@@ -62,6 +62,9 @@ func update(screen *ebiten.Image) error {
                         pressedButtons = append(pressedButtons, strconv.Itoa(int(b)))
                 }
         }
+        if ebiten.IsRunningSlowly() {
+                return nil
+        }
 
         str := `Gamepad
   Axes:

docs/examples/hsv.html

@@ -83,6 +83,9 @@ 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)

docs/examples/hue.html

@@ -50,6 +50,9 @@ 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)

docs/examples/infinitescroll.html

@@ -101,7 +101,9 @@ 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)
 

docs/examples/life.html

@@ -184,6 +184,9 @@ var (
 
 func update(screen *ebiten.Image) error {
         world.Progress()
+        if ebiten.IsRunningSlowly() {
+                return nil
+        }
         world.DrawImage(noiseImage)
         screen.ReplacePixels(noiseImage.Pix)
         return nil

docs/examples/masking.html

@@ -77,7 +77,9 @@ func update(screen *ebiten.Image) error {
                 spotLightY = -spotLightY + 2*maxY
                 spotLightVY = -spotLightVY
         }
-
+        if ebiten.IsRunningSlowly() {
+                return nil
+        }
         maskImage.Clear()
 
         op := &ebiten.DrawImageOptions{}

docs/examples/mosaic.html

@@ -50,6 +50,9 @@ 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)

docs/examples/noise.html

@@ -71,6 +71,9 @@ 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

docs/examples/paint.html

@@ -75,7 +75,9 @@ 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)

docs/examples/perspective.html

@@ -68,6 +68,9 @@ 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},
         }

docs/examples/piano.html

@@ -220,7 +220,9 @@ 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)
 

docs/examples/rotate.html

@@ -50,6 +50,9 @@ 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)