func main() {
var err error
gophersImage, _, err = common.AssetImage("gophers.jpg", ebiten.FilterNearest)
if err != nil {
log.Fatal(err)
}
fiveyearsImage, _, err = common.AssetImage("fiveyears.jpg", ebiten.FilterNearest)
if err != nil {
log.Fatal(err)
}
maskImage, err = ebiten.NewImage(screenWidth, screenHeight, ebiten.FilterNearest)
if err != nil {
log.Fatal(err)
}
as := image.Point{128, 128}
a := image.NewAlpha(image.Rectangle{image.ZP, as})
for j := 0; j < as.Y; j++ {
for i := 0; i < as.X; i++ {
r := as.X / 2
d := math.Sqrt(float64((i-r)*(i-r) + (j-r)*(j-r)))
b := uint8(max(0, min(0xff, 3*0xff-int(d*3*0xff)/r)))
a.SetAlpha(i, j, color.Alpha{b})
}
}
spotLightImage, err = ebiten.NewImageFromImage(a, ebiten.FilterNearest)
if err != nil {
log.Fatal(err)
}
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Masking (Ebiten Demo)"); err != nil {
log.Fatal(err)
}
}
func main() {
var err error
gophersImage, _, err = common.AssetImage("gophers.jpg", ebiten.FilterNearest)
if err != nil {
log.Fatal(err)
}
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "HSV (Ebiten Demo)"); err != nil {
log.Fatal(err)
}
}
func main() {
var err error
ebitenImage, _, err = common.AssetImage("ebiten.png", ebiten.FilterNearest)
if err != nil {
log.Fatal(err)
}
ebitenImageWidth, ebitenImageHeight = ebitenImage.Size()
for i := range sprites.sprites {
w, h := ebitenImage.Size()
x, y := rand.Intn(screenWidth-w), rand.Intn(screenHeight-h)
vx, vy := 2*rand.Intn(2)-1, 2*rand.Intn(2)-1
sprites.sprites[i] = &Sprite{
image: ebitenImage,
x: x,
y: y,
vx: vx,
vy: vy,
}
}
if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Sprites (Ebiten Demo)"); err != nil {
log.Fatal(err)
}
}