ebiten/mobile/ebitenmobileview/impl_mobile.go
2019-08-15 03:27:26 +09:00

54 lines
1.4 KiB
Go

// Copyright 2016 Hajime Hoshi
//
// 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 android ios
package ebitenmobileview
import (
"errors"
"github.com/hajimehoshi/ebiten"
"github.com/hajimehoshi/ebiten/internal/uidriver/mobile"
)
var (
chError <-chan error
running bool
)
func update() error {
if chError == nil {
return errors.New("ebitenmobileview: chError must not be nil: Start is not called yet?")
}
if !running {
return errors.New("ebitenmobileview: start must be called ahead of update")
}
select {
case err := <-chError:
return err
default:
}
mobile.Get().Render()
return nil
}
func start(f func(*ebiten.Image) error, width, height int, scale float64) {
running = true
// The last argument 'title' is not used on mobile platforms, so just pass an empty string.
chError = ebiten.RunWithoutMainLoop(f, width, height, scale, "")
}