Add ebitenmobileview package for internal usage

This is a preparation for the ebitenmobile command.

mobile/ebitenmobileview/ebitenmobileview.go

@@ -0,0 +1,76 @@
+// 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, and there is no guarantee of
+// backward compatibility.
+package ebitenmobileview
+
+import (
+	"runtime"
+	"sync"
+
+	"github.com/hajimehoshi/ebiten"
+)
+
+var (
+	// mobileMutex 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
+	mobileMutex sync.Mutex
+)
+
+func Run(width, height int, scale float64, title string) {
+	mobileMutex.Lock()
+	defer mobileMutex.Unlock()
+
+	if updateFunc == nil {
+		panic("ebitenmobileview: SetUpdateFunc must be called before Run")
+	}
+	start(updateFunc, width, height, scale, title)
+}
+
+func Update() error {
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	mobileMutex.Lock()
+	defer mobileMutex.Unlock()
+
+	return update()
+}
+
+func UpdateTouchesOnAndroid(action int, id int, x, y int) {
+	mobileMutex.Lock()
+	defer mobileMutex.Unlock()
+
+	updateTouchesOnAndroid(action, id, x, y)
+}
+
+func UpdateTouchesOnIOS(phase int, ptr int64, x, y int) {
+	mobileMutex.Lock()
+	defer mobileMutex.Unlock()
+
+	updateTouchesOnIOSImpl(phase, ptr, x, y)
+}
+
+var updateFunc func(*ebiten.Image) error
+
+func SetUpdateFunc(f func(*ebiten.Image) error) {
+	mobileMutex.Lock()
+	defer mobileMutex.Unlock()
+
+	updateFunc = f
+}

mobile/ebitenmobileview/impl_empty.go

@@ -16,7 +16,7 @@
 // +build !android
 // +build !ios
 
-package mobile
+package ebitenmobileview
 
 import (
 	"github.com/hajimehoshi/ebiten"

mobile/ebitenmobileview/impl_mobile.go

@@ -14,7 +14,7 @@
 
 // +build android ios
 
-package mobile
+package ebitenmobileview
 
 import (
 	"errors"

mobile/ebitenmobileview/touches_android.go

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package mobile
+package ebitenmobileview
 
 func updateTouchesOnAndroid(action int, id int, x, y int) {
 	switch action {

mobile/ebitenmobileview/touches_ios.go

@@ -14,7 +14,7 @@
 
 // +build ios
 
-package mobile
+package ebitenmobileview
 
 import (
 	"fmt"

mobile/ebitenmobileview/touches_mobile.go

@@ -14,7 +14,7 @@
 
 // +build android ios
 
-package mobile
+package ebitenmobileview
 
 import (
 	"github.com/hajimehoshi/ebiten/internal/uidriver/mobile"

mobile/mobile.go

@@ -21,17 +21,8 @@
 package mobile
 
 import (
-	"runtime"
-	"sync"
-
 	"github.com/hajimehoshi/ebiten"
-)
-
-var (
-	// mobileMutex 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
-	mobileMutex sync.Mutex
+	"github.com/hajimehoshi/ebiten/mobile/ebitenmobileview"
 )
 
 // Start starts the game and returns immediately.
@@ -44,10 +35,8 @@ var (
 //
 // Start always returns nil as of 1.5.0-alpha.
 func Start(f func(*ebiten.Image) error, width, height int, scale float64, title string) error {
-	mobileMutex.Lock()
-	defer mobileMutex.Unlock()
-
-	start(f, width, height, scale, title)
+	ebitenmobileview.SetUpdateFunc(f)
+	ebitenmobileview.Run(width, height, scale, title)
 	return nil
 }
 
@@ -64,13 +53,7 @@ func Start(f func(*ebiten.Image) error, width, height int, scale float64, title
 //
 // Update returns error when 1) OpenGL error happens, or 2) f in Start returns error samely as ebiten.Run.
 func Update() error {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	mobileMutex.Lock()
-	defer mobileMutex.Unlock()
-
-	return update()
+	return ebitenmobileview.Update()
 }
 
 // UpdateTouchesOnAndroid updates the touch state on Android.
@@ -107,10 +90,7 @@ func Update() error {
 //
 // For more details, see https://github.com/hajimehoshi/ebiten/wiki/Android.
 func UpdateTouchesOnAndroid(action int, id int, x, y int) {
-	mobileMutex.Lock()
-	defer mobileMutex.Unlock()
-
-	updateTouchesOnAndroid(action, id, x, y)
+	ebitenmobileview.UpdateTouchesOnAndroid(action, id, x, y)
 }
 
 // UpdateTouchesOnIOS updates the touch state on iOS.
@@ -151,8 +131,9 @@ func UpdateTouchesOnAndroid(action int, id int, x, y int) {
 //
 // For more details, see https://github.com/hajimehoshi/ebiten/wiki/iOS.
 func UpdateTouchesOnIOS(phase int, ptr int64, x, y int) {
-	mobileMutex.Lock()
-	defer mobileMutex.Unlock()
-
-	updateTouchesOnIOSImpl(phase, ptr, x, y)
+	ebitenmobileview.UpdateTouchesOnIOS(phase, ptr, x, y)
+}
+
+func SetUpdateFunc(f func(*ebiten.Image) error) {
+	ebitenmobileview.SetUpdateFunc(f)
 }