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examples/airship: Remove unexpected blue spots

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This commit is contained in:
Hajime Hoshi 2016-07-17 06:56:10 +09:00
parent 847f72f9be
commit 6541654746
1 changed files with 11 additions and 8 deletions
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19
examples/airship/main.go
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@ -33,8 +33,12 @@ const (
)
var (
skyColor = color.RGBA{0x66, 0xcc, 0xff, 0xff}
thePlayer = &player{}
skyColor = color.RGBA{0x66, 0xcc, 0xff, 0xff}
thePlayer = &player{
x16: 16 * 100,
y16: 16 * 200,
angle: maxAngle * 3 / 4,
}
gophersImage *ebiten.Image
groundImage *ebiten.Image
)
@ -111,9 +115,6 @@ func (p *player) Angle() int {
}
func updateGroundImage(ground *ebiten.Image) error {
if err := ground.Clear(); err != nil {
return nil
}
x16, y16 := thePlayer.Position()
a := thePlayer.Angle()
gw, gh := ground.Size()
@ -144,13 +145,15 @@ func (g *groundParts) Len() int {
func (g *groundParts) Src(i int) (int, int, int, int) {
w, _ := g.image.Size()
r := 60 - (i+10)/4
return w/2 - r, i, w/2 + r, i + 1
return 0, i, w, i + 1
}
func (g *groundParts) Dst(i int) (int, int, int, int) {
w, _ := g.image.Size()
return 0, i, w, i + 1
r := 30 + i*2
// TODO: If the last value is i + 1, there would be unexpected spots on the screen.
// i + 1 should work.
return -r, i, w + r, i + 2
}
func drawGroundImage(screen *ebiten.Image, ground *ebiten.Image) error {