疑问1, 不支持官方模拟器调试. 需真机调试, 网上据说有办法解决 未测试,
疑问2, 不支持genymontion这个geek模拟器
1.下载google adt(已经包含eclipse 以及adk, cdt),
2.下载ndk, 配置ndk环境, eclipse中指明ndk路径,
3.下载cocos-2dx, eclipse中配置环境变量
4. 导入范例工程 便于围观
5. 自行新建工程,
打开终端，进入cocos2d-x目录下的tools/project-creator，执行命令 ./create_project.py -project [项目名] -package [包名] -language [使用语言cpp或java等] 然后就能在cocos2d-x目录下的projects中看到新生成的项目了。(cocos2dx 2.2以后不再使用模板安装了, python安装及环境自己脑补)
由于未安装cygwin 所以新项目编译会产生错误(Error: Program "bash" is not found in PATH), 在eclipse的新建工程名称上 右键->属性--> c/c++ build 面板右侧 build command 栏改为 xxxxx\android-ndk-r9\ndk-build.cmd
现在开始分析cocos2dx源码的驱动流程, 以下是cocos2dx 2.2版本自动生成的范例
//程序的入口
public class test extends Cocos2dxActivity{
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
}
public Cocos2dxGLSurfaceView onCreateView() {
Cocos2dxGLSurfaceView glSurfaceView = new Cocos2dxGLSurfaceView(this);
// test should create stencil buffer
glSurfaceView.setEGLConfigChooser(5, 6, 5, 0, 16, 8);
return glSurfaceView;
}
static {
System.loadLibrary("cocos2dcpp");
}
}
从源码看, 好像没做什么工作. 只是载入了jni 库, 肯定内有乾坤, 从parent class继续跟public abstract class Cocos2dxActivity extends Activity implements Cocos2dxHelperListener {
@Override
protected void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
sContext = this;
this.mHandler = new Cocos2dxHandler(this);
this.init(); //此处调用内部函数
Cocos2dxHelper.init(this, this);
}
// ===========================================================
public void init() {
// FrameLayout
ViewGroup.LayoutParams framelayout_params =
new ViewGroup.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT,
ViewGroup.LayoutParams.FILL_PARENT);
FrameLayout framelayout = new FrameLayout(this);
framelayout.setLayoutParams(framelayout_params);
// Cocos2dxEditText layout
ViewGroup.LayoutParams edittext_layout_params =
new ViewGroup.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT);
Cocos2dxEditText edittext = new Cocos2dxEditText(this);
edittext.setLayoutParams(edittext_layout_params);
// ...add to FrameLayout
framelayout.addView(edittext);
// Cocos2dxGLSurfaceView
this.mGLSurfaceView = this.onCreateView();
// ...add to FrameLayout
framelayout.addView(this.mGLSurfaceView);
// Switch to supported OpenGL (ARGB888) mode on emulator
if (isAndroidEmulator())
this.mGLSurfaceView.setEGLConfigChooser(8 , 8, 8, 8, 16, 0);
this.mGLSurfaceView.setCocos2dxRenderer(new Cocos2dxRenderer()); //这里值得关注, 当然是在看了当前class 其他代码没什么头绪的情况下, 用排除法得出的结论
this.mGLSurfaceView.setCocos2dxEditText(edittext);
// Set framelayout as the content view
setContentView(framelayout);
}
从 Cocos2dxRenderer 继续跟.public class Cocos2dxRenderer implements GLSurfaceView.Renderer {
@Override
public void onSurfaceCreated(final GL10 pGL10, final EGLConfig pEGLConfig) {
Cocos2dxRenderer.nativeInit(this.mScreenWidth, this.mScreenHeight); //从名称上看 这个似乎跟jni相关了
this.mLastTickInNanoSeconds = System.nanoTime();
}
private static native void nativeInit(final int pWidth, final int pHeight); //果然是个native函数. 这里应该会直接到c库了#include "AppDelegate.h"
#include "cocos2d.h"
#include "CCEventType.h"
#include "platform/android/jni/JniHelper.h"
#include <jni.h>
#include <android/log.h>
#define LOG_TAG "main"
#define LOGD(...) __android_log_print(ANDROID_LOG_DEBUG,LOG_TAG,__VA_ARGS__)
using namespace cocos2d;
extern "C"
{
jint JNI_OnLoad(JavaVM *vm, void *reserved)
{
JniHelper::setJavaVM(vm);
return JNI_VERSION_1_4;
}
//此处就是java中找出来的jni函数, 从程序最初的activity 驱动到cocos2dx的引擎入口
void Java_org_cocos2dx_lib_Cocos2dxRenderer_nativeInit(JNIEnv* env, jobject thiz, jint w, jint h)
{
if (!CCDirector::sharedDirector()->getOpenGLView())
{
CCEGLView *view = CCEGLView::sharedOpenGLView();
view->setFrameSize(w, h);
AppDelegate *pAppDelegate = new AppDelegate(); // 这里的语法很奇怪, 静态函数为什么不直接调用, 这么奇怪的语法是因为 AppDelegate 对象需要调用parent class CCApplication的构造器, 初始化一个静态的CCApplication
对象, 这样CCApplication::sharedApplication()才不会获得null指针, 最后附上CCApplication.cpp的部分有关联的代码
CCApplication::sharedApplication()->run(); //此处代表引擎的内部循环正式开始了
}
else
{
ccGLInvalidateStateCache();
CCShaderCache::sharedShaderCache()->reloadDefaultShaders();
ccDrawInit();
CCTextureCache::reloadAllTextures();
CCNotificationCenter::sharedNotificationCenter()->postNotification(EVENT_COME_TO_FOREGROUND, NULL);
CCDirector::sharedDirector()->setGLDefaultValues();
}
}
}
platform/android/CCApplication.cpp
// sharedApplication pointer
CCApplication * CCApplication::sm_pSharedApplication = 0;
CCApplication::CCApplication()
{
CCAssert(! sm_pSharedApplication, "");
sm_pSharedApplication = this;
}