ebiten/mobile/ebitenmobileview/ebitenmobileview.go
2019-08-11 21:55:05 +09:00

95 lines
2.3 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.
// Package ebitenmobileview offers functions for OpenGL/Metal view of mobiles.
//
// The functions are not intended for public usages.
// There is no guarantee of backward compatibility.
package ebitenmobileview
import (
"runtime"
"sync"
"github.com/hajimehoshi/ebiten"
)
var theState state
type state struct {
updateFunc func(*ebiten.Image) error
screenWidth int
screenHeight int
// m is a mutex required for each function.
// For example, on Android, Update can be called from a different thread:
// https://developer.android.com/reference/android/opengl/GLSurfaceView.Renderer
m sync.Mutex
}
func Run(scale float64) {
theState.m.Lock()
defer theState.m.Unlock()
if theState.updateFunc == nil {
panic("ebitenmobileview: SetUpdateFunc must be called before Run")
}
start(theState.updateFunc, theState.screenWidth, theState.screenHeight, scale)
}
func Update() error {
runtime.LockOSThread()
defer runtime.UnlockOSThread()
theState.m.Lock()
defer theState.m.Unlock()
return update()
}
func UpdateTouchesOnAndroid(action int, id int, x, y int) {
theState.m.Lock()
defer theState.m.Unlock()
updateTouchesOnAndroid(action, id, x, y)
}
func UpdateTouchesOnIOS(phase int, ptr int64, x, y int) {
theState.m.Lock()
defer theState.m.Unlock()
updateTouchesOnIOSImpl(phase, ptr, x, y)
}
func ScreenWidth() int {
theState.m.Lock()
defer theState.m.Unlock()
return theState.screenWidth
}
func ScreenHeight() int {
theState.m.Lock()
defer theState.m.Unlock()
return theState.screenHeight
}
func Set(updateFunc func(*ebiten.Image) error, screenWidth, screenHeight int) {
theState.m.Lock()
defer theState.m.Unlock()
theState.updateFunc = updateFunc
theState.screenWidth = screenWidth
theState.screenHeight = screenHeight
}