ebiten/internal/processtest/testdata/issue2180.go

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// Copyright 2022 The Ebitengine 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.
//go:build ignore
// +build ignore
package main
import (
"errors"
"fmt"
"image"
"image/color"
"github.com/hajimehoshi/ebiten/v2"
"github.com/hajimehoshi/ebiten/v2/ebitenutil"
)
var regularTermination = errors.New("regular termination")
var (
baseImage *ebiten.Image
derivedImage *ebiten.Image
)
func init() {
const (
w = 36
h = 40
)
baseImage = ebiten.NewImage(w, h)
derivedImage = ebiten.NewImage(w, h)
baseImage.Fill(color.White)
for j := 0; j < h; j++ {
for i := 0; i < w; i++ {
baseImage.SubImage(image.Rect(i, j, i+1, j+1)).(*ebiten.Image).WritePixels([]byte{0, 0, 0, 0xff})
}
}
derivedImage.DrawImage(baseImage, nil)
}
type Game struct {
count int
}
func (g *Game) Update() error {
g.count++
if g.count == 16 {
return regularTermination
}
return nil
}
func (g *Game) Draw(screen *ebiten.Image) {
screen.Fill(color.White)
screen.DrawImage(derivedImage, nil)
if g.count >= 8 {
if got, want := screen.At(0, 0), (color.RGBA{0, 0, 0, 0xff}); got != want {
panic(fmt.Sprintf("got: %v, want: %v", got, want))
}
}
// The blow 3 line matters to reproduce #2154.
mx, my := ebiten.CursorPosition()
msg := fmt.Sprintf("TPS: %.01f; FPS: %.01f; cursor: (%d, %d)", ebiten.ActualTPS(), ebiten.ActualFPS(), mx, my)
ebitenutil.DebugPrint(screen, msg)
}
func (g *Game) Layout(outsideWidth, outsideHeight int) (int, int) {
return 640, 480
}
func main() {
ebiten.SetWindowTitle("Test")
if err := ebiten.RunGame(&Game{}); err != nil && !errors.Is(err, regularTermination) {
panic(err)
}
}