internal/ui: bug fix: build failure on mobiles

internal/ui/run.go

@@ -0,0 +1,88 @@
+// Copyright 2023 The Ebitengine Authors
+//
+// 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.
+
+//go:build !android && !ios
+
+package ui
+
+import (
+	stdcontext "context"
+
+	"golang.org/x/sync/errgroup"
+
+	"github.com/hajimehoshi/ebiten/v2/internal/graphicscommand"
+	"github.com/hajimehoshi/ebiten/v2/internal/thread"
+)
+
+func (u *UserInterface) runMultiThread(game Game, options *RunOptions) error {
+	u.mainThread = thread.NewOSThread()
+	u.renderThread = thread.NewOSThread()
+	graphicscommand.SetRenderThread(u.renderThread)
+
+	// Set the running state true after the main thread is set, and before initOnMainThread is called (#2742).
+	// TODO: As the existance of the main thread is the same as the value of `running`, this is redundant.
+	// Make `mainThread` atomic and remove `running` if possible.
+	u.setRunning(true)
+	defer u.setRunning(false)
+
+	u.context = newContext(game)
+
+	if err := u.initOnMainThread(options); err != nil {
+		return err
+	}
+
+	ctx, cancel := stdcontext.WithCancel(stdcontext.Background())
+	defer cancel()
+
+	var wg errgroup.Group
+
+	// Run the render thread.
+	wg.Go(func() error {
+		defer cancel()
+		_ = u.renderThread.Loop(ctx)
+		return nil
+	})
+
+	// Run the game thread.
+	wg.Go(func() error {
+		defer cancel()
+		return u.loopGame()
+	})
+
+	// Run the main thread.
+	_ = u.mainThread.Loop(ctx)
+	return wg.Wait()
+}
+
+func (u *UserInterface) runSingleThread(game Game, options *RunOptions) error {
+	// Initialize the main thread first so the thread is available at u.run (#809).
+	u.mainThread = thread.NewNoopThread()
+	u.renderThread = thread.NewNoopThread()
+	graphicscommand.SetRenderThread(u.renderThread)
+
+	u.setRunning(true)
+	defer u.setRunning(false)
+
+	u.context = newContext(game)
+
+	if err := u.initOnMainThread(options); err != nil {
+		return err
+	}
+
+	if err := u.loopGame(); err != nil {
+		return err
+	}
+
+	return nil
+}

internal/ui/ui.go

@@ -15,16 +15,12 @@
 package ui
 
 import (
-	stdcontext "context"
 	"errors"
 	"image"
 	"sync"
 	"sync/atomic"
 
-	"golang.org/x/sync/errgroup"
-
 	"github.com/hajimehoshi/ebiten/v2/internal/atlas"
-	"github.com/hajimehoshi/ebiten/v2/internal/graphicscommand"
 	"github.com/hajimehoshi/ebiten/v2/internal/mipmap"
 	"github.com/hajimehoshi/ebiten/v2/internal/thread"
 )
@@ -207,65 +203,3 @@ func (u *UserInterface) isTerminated() bool {
 func (u *UserInterface) setTerminated() {
 	atomic.StoreInt32(&u.terminated, 1)
 }
-
-func (u *UserInterface) runMultiThread(game Game, options *RunOptions) error {
-	u.mainThread = thread.NewOSThread()
-	u.renderThread = thread.NewOSThread()
-	graphicscommand.SetRenderThread(u.renderThread)
-
-	// Set the running state true after the main thread is set, and before initOnMainThread is called (#2742).
-	// TODO: As the existance of the main thread is the same as the value of `running`, this is redundant.
-	// Make `mainThread` atomic and remove `running` if possible.
-	u.setRunning(true)
-	defer u.setRunning(false)
-
-	u.context = newContext(game)
-
-	if err := u.initOnMainThread(options); err != nil {
-		return err
-	}
-
-	ctx, cancel := stdcontext.WithCancel(stdcontext.Background())
-	defer cancel()
-
-	var wg errgroup.Group
-
-	// Run the render thread.
-	wg.Go(func() error {
-		defer cancel()
-		_ = u.renderThread.Loop(ctx)
-		return nil
-	})
-
-	// Run the game thread.
-	wg.Go(func() error {
-		defer cancel()
-		return u.loopGame()
-	})
-
-	// Run the main thread.
-	_ = u.mainThread.Loop(ctx)
-	return wg.Wait()
-}
-
-func (u *UserInterface) runSingleThread(game Game, options *RunOptions) error {
-	// Initialize the main thread first so the thread is available at u.run (#809).
-	u.mainThread = thread.NewNoopThread()
-	u.renderThread = thread.NewNoopThread()
-	graphicscommand.SetRenderThread(u.renderThread)
-
-	u.setRunning(true)
-	defer u.setRunning(false)
-
-	u.context = newContext(game)
-
-	if err := u.initOnMainThread(options); err != nil {
-		return err
-	}
-
-	if err := u.loopGame(); err != nil {
-		return err
-	}
-
-	return nil
-}