mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-10 04:57:26 +01:00
89 lines
1.9 KiB
Go
89 lines
1.9 KiB
Go
/*
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Copyright 2014 Hajime Hoshi
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package glfw
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import (
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"errors"
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"fmt"
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glfw "github.com/go-gl/glfw3"
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"github.com/hajimehoshi/ebiten"
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)
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func init() {
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glfw.SetErrorCallback(func(err glfw.ErrorCode, desc string) {
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panic(fmt.Sprintf("%v: %v\n", err, desc))
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})
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}
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type UI struct {
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canvas *canvas
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}
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func (u *UI) Start(game ebiten.Game, width, height, scale int, title string) error {
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if !glfw.Init() {
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return errors.New("glfw.Init() fails")
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}
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glfw.WindowHint(glfw.Resizable, glfw.False)
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window, err := glfw.CreateWindow(width*scale, height*scale, title, nil, nil)
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if err != nil {
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return err
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}
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c := &canvas{
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window: window,
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scale: scale,
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funcs: make(chan func()),
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funcsDone: make(chan struct{}),
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}
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c.run(width, height, scale)
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// For retina displays, recalculate the scale with the framebuffer size.
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windowWidth, _ := window.GetFramebufferSize()
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realScale := windowWidth / width
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c.use(func() {
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c.graphicsContext, err = ebiten.Initialize(width, height, realScale)
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})
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if err != nil {
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return err
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}
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u.canvas = c
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if err := game.Initialize(c); err != nil {
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return err
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}
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return nil
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}
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func (u *UI) DoEvents() {
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glfw.PollEvents()
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u.canvas.update()
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}
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func (u *UI) Terminate() {
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glfw.Terminate()
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}
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func (u *UI) IsClosed() bool {
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return u.canvas.isClosed()
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}
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func (u *UI) DrawGame(game ebiten.Game) error {
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return u.canvas.draw(game)
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}
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