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examples/moire: Add comments

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Hajime Hoshi 2018-01-29 03:09:30 +09:00
parent d6769659eb
commit 38013bbc22
1 changed files with 10 additions and 31 deletions
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33
examples/moire/main.go
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@ -14,6 +14,9 @@
// +build example // +build example
// This example is just to check if Ebiten can draw fine checker pattern evenly.
// If there is something wrong in the implementation, the result might include
// uneven patterns (#459).
package main package main
import ( import (
@ -23,18 +26,13 @@ import (
) )
const ( const (
initScreenWidth = 640 screenWidth = 640
initScreenHeight = 480 screenHeight = 480
initScreenScale = 1 initScreenScale = 1
) )
var ( var (
gophersImage *ebiten.Image
keyStates = map[ebiten.Key]int{ keyStates = map[ebiten.Key]int{
ebiten.KeyUp: 0,
ebiten.KeyDown: 0,
ebiten.KeyLeft: 0,
ebiten.KeyRight: 0,
ebiten.KeyS: 0, ebiten.KeyS: 0,
ebiten.KeyF: 0, ebiten.KeyF: 0,
} }
@ -75,26 +73,8 @@ func update(screen *ebiten.Image) error {
keyStates[key]++ keyStates[key]++
} }
screenScale := ebiten.ScreenScale() screenScale := ebiten.ScreenScale()
d := int(32 / screenScale)
screenWidth, screenHeight := screen.Size()
fullscreen := ebiten.IsFullscreen() fullscreen := ebiten.IsFullscreen()
if keyStates[ebiten.KeyUp] == 1 {
screenHeight += d
}
if keyStates[ebiten.KeyDown] == 1 {
if 16 < screenHeight && d < screenHeight {
screenHeight -= d
}
}
if keyStates[ebiten.KeyLeft] == 1 {
if 16 < screenWidth && d < screenWidth {
screenWidth -= d
}
}
if keyStates[ebiten.KeyRight] == 1 {
screenWidth += d
}
if keyStates[ebiten.KeyS] == 1 { if keyStates[ebiten.KeyS] == 1 {
switch screenScale { switch screenScale {
case 1: case 1:
@ -110,7 +90,6 @@ func update(screen *ebiten.Image) error {
if keyStates[ebiten.KeyF] == 1 { if keyStates[ebiten.KeyF] == 1 {
fullscreen = !fullscreen fullscreen = !fullscreen
} }
ebiten.SetScreenSize(screenWidth, screenHeight)
ebiten.SetScreenScale(screenScale) ebiten.SetScreenScale(screenScale)
ebiten.SetFullscreen(fullscreen) ebiten.SetFullscreen(fullscreen)
@ -123,7 +102,7 @@ func update(screen *ebiten.Image) error {
} }
func main() { func main() {
if err := ebiten.Run(update, initScreenWidth, initScreenHeight, initScreenScale, "Moire (Ebiten Demo)"); err != nil { if err := ebiten.Run(update, screenWidth, screenHeight, initScreenScale, "Moire (Ebiten Demo)"); err != nil {
log.Fatal(err) log.Fatal(err)
} }
} }