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examples/airship: Introduce repeatedGophersImage
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@ -41,6 +41,7 @@ var (
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angle: maxAngle * 3 / 4,
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}
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gophersImage *ebiten.Image
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repeatedGophersImage *ebiten.Image
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groundImage *ebiten.Image
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fogImage *ebiten.Image
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)
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@ -124,18 +125,14 @@ func updateGroundImage(ground *ebiten.Image) error {
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a := thePlayer.Angle()
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gw, gh := ground.Size()
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w, h := gophersImage.Size()
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for j := -2; j <= 2; j++ {
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for i := -2; i <= 2; i++ {
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op := &ebiten.DrawImageOptions{}
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op.GeoM.Translate(float64(-x16)/16, float64(-y16)/16)
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op.GeoM.Translate(float64(w*i), float64(h*j))
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op.GeoM.Translate(float64(-w*2), float64(-h*2))
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op.GeoM.Rotate(float64(-a)*2*math.Pi/maxAngle + math.Pi*3.0/2.0)
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op.GeoM.Translate(float64(gw)/2, float64(gh)-32)
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if err := ground.DrawImage(gophersImage, op); err != nil {
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if err := ground.DrawImage(repeatedGophersImage, op); err != nil {
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return err
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}
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}
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}
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return nil
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}
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@ -230,6 +227,21 @@ func main() {
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if err != nil {
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log.Fatal(err)
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}
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w, h := gophersImage.Size()
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const repeat = 5
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repeatedGophersImage, err = ebiten.NewImage(w*repeat, h*repeat, ebiten.FilterNearest)
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if err != nil {
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log.Fatal(err)
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}
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for j := 0; j < repeat; j++ {
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for i := 0; i < repeat; i++ {
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op := &ebiten.DrawImageOptions{}
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op.GeoM.Translate(float64(w*i), float64(h*j))
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if err := repeatedGophersImage.DrawImage(gophersImage, op); err != nil {
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log.Fatal(err)
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}
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}
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}
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groundWidth := screenWidth + 70
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groundImage, err = ebiten.NewImage(groundWidth, screenHeight*2/3+50, ebiten.FilterNearest)
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if err != nil {
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