mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-14 06:57:27 +01:00
96 lines
2.2 KiB
Go
96 lines
2.2 KiB
Go
// Copyright 2017 The Ebiten Authors
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
// +build example jsgo
|
|
|
|
// 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
|
|
|
|
import (
|
|
"log"
|
|
|
|
"github.com/hajimehoshi/ebiten"
|
|
"github.com/hajimehoshi/ebiten/inpututil"
|
|
)
|
|
|
|
const (
|
|
screenWidth = 640
|
|
screenHeight = 480
|
|
initScreenScale = 1
|
|
)
|
|
|
|
var (
|
|
dots []uint8
|
|
dotsWidth int
|
|
dotsHeight int
|
|
)
|
|
|
|
func getDots(width, height int) []uint8 {
|
|
if dotsWidth == width && dotsHeight == height {
|
|
return dots
|
|
}
|
|
dotsWidth = width
|
|
dotsHeight = height
|
|
dots = make([]uint8, width*height*4)
|
|
for j := 0; j < height; j++ {
|
|
for i := 0; i < width; i++ {
|
|
if (i+j)%2 == 0 {
|
|
dots[(i+j*width)*4+0] = 0xff
|
|
dots[(i+j*width)*4+1] = 0xff
|
|
dots[(i+j*width)*4+2] = 0xff
|
|
dots[(i+j*width)*4+3] = 0xff
|
|
}
|
|
}
|
|
}
|
|
return dots
|
|
}
|
|
|
|
func update(screen *ebiten.Image) error {
|
|
screenScale := ebiten.ScreenScale()
|
|
fullscreen := ebiten.IsFullscreen()
|
|
|
|
if inpututil.IsKeyJustPressed(ebiten.KeyS) {
|
|
switch screenScale {
|
|
case 1:
|
|
screenScale = 1.5
|
|
case 1.5:
|
|
screenScale = 2
|
|
case 2:
|
|
screenScale = 1
|
|
default:
|
|
panic("not reached")
|
|
}
|
|
}
|
|
if inpututil.IsKeyJustPressed(ebiten.KeyF) {
|
|
fullscreen = !fullscreen
|
|
}
|
|
ebiten.SetScreenScale(screenScale)
|
|
ebiten.SetFullscreen(fullscreen)
|
|
|
|
if ebiten.IsDrawingSkipped() {
|
|
return nil
|
|
}
|
|
|
|
screen.ReplacePixels(getDots(screen.Size()))
|
|
return nil
|
|
}
|
|
|
|
func main() {
|
|
if err := ebiten.Run(update, screenWidth, screenHeight, initScreenScale, "Moire (Ebiten Demo)"); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
}
|