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IsWindowBeingClosed reports whether the window is being closed by the user. SetWindowClosingHandled sets whether the window closing is handled or not. If the state is true, the window is not closed immediately by the user and the game can handle the closing state. In this case, the Update function should return an error in order to end the game. This change also adds examples/windowclosing. Closes #1574
68 lines
1.7 KiB
Go
68 lines
1.7 KiB
Go
// Copyright 2021 The Ebiten 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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// +build example
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package main
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import (
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"errors"
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"log"
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"github.com/hajimehoshi/ebiten/v2"
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"github.com/hajimehoshi/ebiten/v2/ebitenutil"
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"github.com/hajimehoshi/ebiten/v2/inpututil"
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)
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var regularTermination = errors.New("regular termination")
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type Game struct {
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windowClosingHandled bool
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}
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func (g *Game) Update() error {
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if ebiten.IsWindowBeingClosed() {
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g.windowClosingHandled = true
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}
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if g.windowClosingHandled {
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if inpututil.IsKeyJustPressed(ebiten.KeyY) {
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return regularTermination
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}
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if inpututil.IsKeyJustPressed(ebiten.KeyN) {
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g.windowClosingHandled = false
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}
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}
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return nil
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}
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func (g *Game) Draw(screen *ebiten.Image) {
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if !g.windowClosingHandled {
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ebitenutil.DebugPrint(screen, "Try to close this window.")
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return
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}
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ebitenutil.DebugPrint(screen, "Do you really want to close this window? [y/n]")
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}
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func (g *Game) Layout(outsideWidth, outsideHeight int) (int, int) {
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return outsideWidth, outsideHeight
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}
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func main() {
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ebiten.SetWindowClosingHandled(true)
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ebiten.SetWindowTitle("Window Closing (Ebiten Demo)")
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if err := ebiten.RunGame(&Game{}); err != nil && err != regularTermination {
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log.Fatal(err)
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}
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}
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