mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-12-26 03:38:55 +01:00
85 lines
1.9 KiB
Go
85 lines
1.9 KiB
Go
// Copyright 2022 The Ebitengine Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//go:build ignore
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package main
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import (
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"fmt"
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"image"
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"image/color"
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"log"
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"github.com/hajimehoshi/ebiten/v2"
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)
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type Game struct {
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images []*ebiten.Image
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imageCreated chan struct{}
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}
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func (g *Game) Update() error {
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if g.imageCreated == nil {
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g.imageCreated = make(chan struct{})
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go func() {
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op := &ebiten.NewImageFromImageOptions{
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Unmanaged: true,
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}
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for i := 0; i < 3; i++ {
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i := i
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img := image.NewRGBA(image.Rect(0, 0, 512, 512))
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for j := 0; j < len(img.Pix)/4; j++ {
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img.Pix[4*j] = byte(0x60 * i)
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img.Pix[4*j+1] = byte(0x60 * i)
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img.Pix[4*j+2] = byte(0x60 * i)
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img.Pix[4*j+3] = 0xff
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}
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g.images = append(g.images, ebiten.NewImageFromImageWithOptions(img, op))
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}
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close(g.imageCreated)
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}()
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return nil
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}
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select {
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case <-g.imageCreated:
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default:
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return nil
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}
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for i, img := range g.images {
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got := img.At(0, 0).(color.RGBA)
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want := color.RGBA{byte(0x60 * i), byte(0x60 * i), byte(0x60 * i), 0xff}
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if got != want {
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panic(fmt.Sprintf("got: %v, want: %v", got, want))
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}
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}
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return ebiten.Termination
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}
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func (g *Game) Draw(screen *ebiten.Image) {
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}
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func (g *Game) Layout(outsideWidth, outsideHeight int) (int, int) {
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return 640, 480
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}
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func main() {
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if err := ebiten.RunGame(&Game{}); err != nil {
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log.Fatal(err)
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}
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}
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