mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-12-26 11:48:55 +01:00
802693fa20
This adds hooks on resuming/suspending the application, and switches the foreground state there. This change also updates the logic to suspend the game loop to be clearer. Fixes #1037
523 lines
14 KiB
Go
523 lines
14 KiB
Go
// Copyright 2019 The Ebiten Authors
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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// +build ebitenmobilegobind
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// gobind is a wrapper of the original gobind. This command adds extra files like a view controller.
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package main
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import (
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"flag"
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"fmt"
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"io/ioutil"
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"log"
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"os"
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"os/exec"
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"path/filepath"
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"strings"
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"golang.org/x/tools/go/packages"
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)
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var (
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lang = flag.String("lang", "", "")
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outdir = flag.String("outdir", "", "")
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javaPkg = flag.String("javapkg", "", "")
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prefix = flag.String("prefix", "", "")
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bootclasspath = flag.String("bootclasspath", "", "")
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classpath = flag.String("classpath", "", "")
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tags = flag.String("tags", "", "")
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)
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var usage = `The Gobind tool generates Java language bindings for Go.
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For usage details, see doc.go.`
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func main() {
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flag.Parse()
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if err := run(); err != nil {
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log.Fatal(err)
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}
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}
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func invokeOriginalGobind(lang string) (pkgName string, err error) {
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cmd := exec.Command("gobind-original", os.Args[1:]...)
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cmd.Stdout = os.Stdout
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cmd.Stderr = os.Stderr
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if err := cmd.Run(); err != nil {
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return "", err
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}
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cfgtags := strings.Join(strings.Split(*tags, ","), " ")
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cfg := &packages.Config{}
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switch lang {
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case "java":
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cfg.Env = append(os.Environ(), "GOOS=android")
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case "objc":
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cfg.Env = append(os.Environ(), "GOOS=darwin")
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if cfgtags != "" {
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cfgtags += " "
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}
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cfgtags += "ios"
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}
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cfg.BuildFlags = []string{"-tags", cfgtags}
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pkgs, err := packages.Load(cfg, flag.Args()[0])
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if err != nil {
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return "", err
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}
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return pkgs[0].Name, nil
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}
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func forceGL() bool {
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for _, tag := range strings.Split(*tags, ",") {
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if tag == "ebitengl" {
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return true
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}
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}
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return false
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}
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func run() error {
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writeFile := func(filename string, content string) error {
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if err := ioutil.WriteFile(filepath.Join(*outdir, filename), []byte(content), 0644); 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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// Add additional files.
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langs := strings.Split(*lang, ",")
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for _, lang := range langs {
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pkgName, err := invokeOriginalGobind(lang)
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if err != nil {
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return err
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}
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prefixLower := *prefix + pkgName
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prefixUpper := strings.Title(*prefix) + strings.Title(pkgName)
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replacePrefixes := func(content string) string {
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content = strings.ReplaceAll(content, "{{.PrefixUpper}}", prefixUpper)
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content = strings.ReplaceAll(content, "{{.PrefixLower}}", prefixLower)
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content = strings.ReplaceAll(content, "{{.JavaPkg}}", *javaPkg)
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f := "0"
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if forceGL() {
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f = "1"
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}
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content = strings.ReplaceAll(content, "{{.ForceGL}}", f)
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return content
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}
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switch lang {
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case "objc":
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// iOS
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if err := writeFile(filepath.Join("src", "gobind", prefixLower+"ebitenviewcontroller_ios.m"), replacePrefixes(objcM)); err != nil {
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return err
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}
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case "java":
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// Android
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dir := filepath.Join(strings.Split(*javaPkg, ".")...)
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dir = filepath.Join(dir, prefixLower)
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if err := writeFile(filepath.Join("java", dir, "EbitenView.java"), replacePrefixes(viewJava)); err != nil {
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return err
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}
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if err := writeFile(filepath.Join("java", dir, "EbitenSurfaceView.java"), replacePrefixes(surfaceViewJava)); err != nil {
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return err
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}
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case "go":
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// Do nothing.
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default:
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panic(fmt.Sprintf("unsupported language: %s", lang))
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}
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}
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return nil
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}
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const objcM = `// Code generated by ebitenmobile. DO NOT EDIT.
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// +build ios
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#import <TargetConditionals.h>
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#if TARGET_IPHONE_SIMULATOR || {{.ForceGL}}
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#define EBITEN_METAL 0
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#else
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#define EBITEN_METAL 1
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#endif
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#import <stdint.h>
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#import <UIKit/UIKit.h>
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#import <GLKit/GLkit.h>
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#import "Ebitenmobileview.objc.h"
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@interface {{.PrefixUpper}}EbitenViewController : UIViewController
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@end
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@implementation {{.PrefixUpper}}EbitenViewController {
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UIView* metalView_;
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GLKView* glkView_;
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bool started_;
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bool active_;
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bool error_;
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}
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- (UIView*)metalView {
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if (!metalView_) {
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metalView_ = [[UIView alloc] init];
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metalView_.multipleTouchEnabled = YES;
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}
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return metalView_;
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}
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- (GLKView*)glkView {
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if (!glkView_) {
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glkView_ = [[GLKView alloc] init];
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glkView_.multipleTouchEnabled = YES;
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}
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return glkView_;
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}
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- (void)viewDidLoad {
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[super viewDidLoad];
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if (!started_) {
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@synchronized(self) {
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active_ = true;
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}
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started_ = true;
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}
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#if EBITEN_METAL
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[self.view addSubview: self.metalView];
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EbitenmobileviewSetUIView((uintptr_t)(self.metalView));
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#else
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self.glkView.delegate = (id<GLKViewDelegate>)(self);
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[self.view addSubview: self.glkView];
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EAGLContext *context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
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[self glkView].context = context;
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[EAGLContext setCurrentContext:context];
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#endif
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CADisplayLink *displayLink = [CADisplayLink displayLinkWithTarget:self selector:@selector(drawFrame)];
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[displayLink addToRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
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}
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- (void)viewDidLayoutSubviews {
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[super viewDidLayoutSubviews];
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CGRect viewRect = [[self view] frame];
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EbitenmobileviewLayout(viewRect.size.width, viewRect.size.height, (id<EbitenmobileviewViewRectSetter>)self);
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}
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- (void)setViewRect:(long)x y:(long)y width:(long)width height:(long)height {
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CGRect viewRect = CGRectMake(x, y, width, height);
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#if EBITEN_METAL
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[[self metalView] setFrame:viewRect];
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#else
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[[self glkView] setFrame:viewRect];
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#endif
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}
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- (void)didReceiveMemoryWarning {
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[super didReceiveMemoryWarning];
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// Dispose of any resources that can be recreated.
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// TODO: Notify this to Go world?
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}
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- (void)drawFrame{
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@synchronized(self) {
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if (!active_) {
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return;
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}
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#if EBITEN_METAL
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[self updateEbiten];
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#else
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[[self glkView] setNeedsDisplay];
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#endif
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}
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}
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- (void)glkView:(GLKView*)view drawInRect:(CGRect)rect {
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@synchronized(self) {
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[self updateEbiten];
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}
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}
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- (void)updateEbiten {
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if (error_) {
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return;
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}
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NSError* err = nil;
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EbitenmobileviewUpdate(&err);
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if (err != nil) {
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[self performSelectorOnMainThread:@selector(onErrorOnGameUpdate:)
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withObject:err
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waitUntilDone:NO];
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error_ = true;
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}
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}
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- (void)onErrorOnGameUpdate:(NSError*)err {
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NSLog(@"Error: %@", err);
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}
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- (void)updateTouches:(NSSet*)touches {
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for (UITouch* touch in touches) {
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#if EBITEN_METAL
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if (touch.view != [self metalView]) {
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continue;
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}
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#else
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if (touch.view != [self glkView]) {
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continue;
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}
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#endif
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CGPoint location = [touch locationInView:touch.view];
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EbitenmobileviewUpdateTouchesOnIOS(touch.phase, (uintptr_t)touch, location.x, location.y);
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}
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}
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- (void)touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event {
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[self updateTouches:touches];
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}
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- (void)touchesMoved:(NSSet*)touches withEvent:(UIEvent*)event {
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[self updateTouches:touches];
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}
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- (void)touchesEnded:(NSSet*)touches withEvent:(UIEvent*)event {
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[self updateTouches:touches];
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}
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- (void)touchesCancelled:(NSSet*)touches withEvent:(UIEvent*)event {
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[self updateTouches:touches];
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}
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- (void)suspendGame {
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NSAssert(started_, @"suspendGame msut not be called before viewDidLoad is called");
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@synchronized(self) {
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active_ = false;
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EbitenmobileviewSuspend();
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}
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}
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- (void)resumeGame {
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NSAssert(started_, @"resumeGame msut not be called before viewDidLoad is called");
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@synchronized(self) {
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active_ = true;
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EbitenmobileviewResume();
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}
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}
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@end
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`
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const viewJava = `// Code generated by ebitenmobile. DO NOT EDIT.
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package {{.JavaPkg}}.{{.PrefixLower}};
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import android.content.Context;
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import android.os.Handler;
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import android.os.Looper;
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import android.util.AttributeSet;
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import android.util.Log;
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import android.view.ViewGroup;
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import {{.JavaPkg}}.ebitenmobileview.Ebitenmobileview;
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import {{.JavaPkg}}.ebitenmobileview.ViewRectSetter;
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public class EbitenView extends ViewGroup {
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private double getDeviceScale() {
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if (deviceScale_ == 0.0) {
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deviceScale_ = getResources().getDisplayMetrics().density;
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}
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return deviceScale_;
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}
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private double pxToDp(double x) {
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return x / getDeviceScale();
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}
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private double dpToPx(double x) {
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return x * getDeviceScale();
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}
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private double deviceScale_ = 0.0;
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public EbitenView(Context context) {
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super(context);
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initialize();
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}
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public EbitenView(Context context, AttributeSet attrs) {
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super(context, attrs);
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initialize();
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}
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private void initialize() {
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ebitenSurfaceView_ = new EbitenSurfaceView(getContext());
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LayoutParams params = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
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addView(ebitenSurfaceView_, params);
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}
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@Override
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protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
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int widthInDp = (int)Math.ceil(pxToDp(right - left));
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int heightInDp = (int)Math.ceil(pxToDp(bottom - top));
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Ebitenmobileview.layout(widthInDp, heightInDp, new ViewRectSetter() {
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@Override
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public void setViewRect(long xInDp, long yInDp, long widthInDp, long heightInDp) {
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// Use Math.floor to use smaller and safer values, or glitches can appear (#956).
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final int widthInPx = (int)Math.floor(dpToPx(widthInDp));
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final int heightInPx = (int)Math.floor(dpToPx(heightInDp));
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final int xInPx = (int)Math.floor(dpToPx(xInDp));
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final int yInPx = (int)Math.floor(dpToPx(yInDp));
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new Handler(Looper.getMainLooper()).post(new Runnable() {
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@Override
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public void run() {
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ebitenSurfaceView_.layout(xInPx, yInPx, xInPx + widthInPx, yInPx + heightInPx);
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}
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});
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}
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});
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}
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// suspendGame suspends the game.
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// It is recommended to call this when the application is being suspended e.g.,
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// Activity's onPause is called.
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public void suspendGame() {
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ebitenSurfaceView_.onPause();
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Ebitenmobileview.suspend();
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}
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// resumeGame resumes the game.
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// It is recommended to call this when the application is being resumed e.g.,
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// Activity's onResume is called.
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public void resumeGame() {
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ebitenSurfaceView_.onResume();
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Ebitenmobileview.resume();
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}
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// onErrorOnGameUpdate is called on the main thread when an error happens when updating a game.
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// You can define your own error handler, e.g., using Crashlytics, by overwriting this method.
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protected void onErrorOnGameUpdate(Exception e) {
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Log.e("Go", e.toString());
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}
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private EbitenSurfaceView ebitenSurfaceView_;
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}
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`
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const surfaceViewJava = `// Code generated by ebitenmobile. DO NOT EDIT.
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package {{.JavaPkg}}.{{.PrefixLower}};
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import android.content.Context;
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import android.opengl.GLSurfaceView;
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import android.os.Handler;
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import android.os.Looper;
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import android.util.AttributeSet;
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import android.view.MotionEvent;
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import javax.microedition.khronos.egl.EGLConfig;
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import javax.microedition.khronos.opengles.GL10;
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import {{.JavaPkg}}.ebitenmobileview.Ebitenmobileview;
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import {{.JavaPkg}}.{{.PrefixLower}}.EbitenView;
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class EbitenSurfaceView extends GLSurfaceView {
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private class EbitenRenderer implements GLSurfaceView.Renderer {
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private boolean errored_ = false;
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@Override
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public void onDrawFrame(GL10 gl) {
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if (errored_) {
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return;
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}
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try {
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Ebitenmobileview.update();
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} catch (final Exception e) {
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new Handler(Looper.getMainLooper()).post(new Runnable() {
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@Override
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public void run() {
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onErrorOnGameUpdate(e);
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}
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});
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errored_ = true;
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}
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}
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@Override
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public void onSurfaceCreated(GL10 gl, EGLConfig config) {
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}
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@Override
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public void onSurfaceChanged(GL10 gl, int width, int height) {
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}
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}
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public EbitenSurfaceView(Context context) {
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super(context);
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initialize();
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}
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public EbitenSurfaceView(Context context, AttributeSet attrs) {
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super(context, attrs);
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initialize();
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}
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private void initialize() {
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setEGLContextClientVersion(2);
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setEGLConfigChooser(8, 8, 8, 8, 0, 0);
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setRenderer(new EbitenRenderer());
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}
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private double getDeviceScale() {
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if (deviceScale_ == 0.0) {
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deviceScale_ = getResources().getDisplayMetrics().density;
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}
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return deviceScale_;
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}
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private double pxToDp(double x) {
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return x / getDeviceScale();
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}
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@Override
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public boolean onTouchEvent(MotionEvent e) {
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for (int i = 0; i < e.getPointerCount(); i++) {
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int id = e.getPointerId(i);
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int x = (int)e.getX(i);
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int y = (int)e.getY(i);
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Ebitenmobileview.updateTouchesOnAndroid(e.getActionMasked(), id, (int)pxToDp(x), (int)pxToDp(y));
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}
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return true;
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}
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private void onErrorOnGameUpdate(Exception e) {
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((EbitenView)getParent()).onErrorOnGameUpdate(e);
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}
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private double deviceScale_ = 0.0;
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}
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`
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