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examples/sprites: Accept touches

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This commit is contained in:
Hajime Hoshi 2019-10-18 01:56:54 +09:00
parent bf07ead6ae
commit 87bc2e6f02
1 changed files with 22 additions and 2 deletions
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24
examples/sprites/main.go
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@ -134,9 +134,29 @@ func init() {
} }
} }
func leftTouched() bool {
for _, id := range ebiten.TouchIDs() {
x, _ := ebiten.TouchPosition(id)
if x < screenWidth/2 {
return true
}
}
return false
}
func rightTouched() bool {
for _, id := range ebiten.TouchIDs() {
x, _ := ebiten.TouchPosition(id)
if x >= screenWidth/2 {
return true
}
}
return false
}
func update(screen *ebiten.Image) error { func update(screen *ebiten.Image) error {
// Decrease the nubmer of the sprites. // Decrease the nubmer of the sprites.
if ebiten.IsKeyPressed(ebiten.KeyLeft) { if ebiten.IsKeyPressed(ebiten.KeyLeft) || leftTouched() {
sprites.num -= 20 sprites.num -= 20
if sprites.num < MinSprites { if sprites.num < MinSprites {
sprites.num = MinSprites sprites.num = MinSprites
@ -144,7 +164,7 @@ func update(screen *ebiten.Image) error {
} }
// Increase the nubmer of the sprites. // Increase the nubmer of the sprites.
if ebiten.IsKeyPressed(ebiten.KeyRight) { if ebiten.IsKeyPressed(ebiten.KeyRight) || rightTouched() {
sprites.num += 20 sprites.num += 20
if MaxSprites < sprites.num { if MaxSprites < sprites.num {
sprites.num = MaxSprites sprites.num = MaxSprites