Cocos2d-x simple game example)

Original article: http://www.raywenderlich.com/28606/how-to-create-a-breakout-game-with-box2d-and-cocos2d-2-x-tutorial-part-2

Can download my package APK file here: http://download.csdn.net/detail/u010639508/5869737

I turned code into C ++ (including resources): https://github.com/serika00/android/tree/master/cocos2d-x/BreakoutGame

Cocs2d-x-2.14 + vs2010

Run:

Helloworldscene. h

#ifndef __HELLOWORLD_SCENE_H__#define __HELLOWORLD_SCENE_H__#include "cocos2d.h"#include "Box2D/Box2D.h"#include "MyContactListener.h"#define PTM_RATIO 32USING_NS_CC;class HelloWorld : public cocos2d::CCLayer{public:    // Here's a difference. Method 'init' in cocos2d-x returns bool, instead of returning 'id' in cocos2d-iphone    virtual bool init();      // there's no 'id' in cpp, so we recommend returning the class instance pointer    static cocos2d::CCScene* scene();        // a selector callback    void menuCloseCallback(CCObject* pSender);        // implement the "static node()" method manually    CREATE_FUNC(HelloWorld);b2World* _world;b2Body* _groundBody;b2Fixture* _bottomFixture;b2Fixture* _ballFixture;b2Body* _paddleBody;b2Fixture* _paddleFixture;b2MouseJoint* _mouseJoint;MyContactListener* _contactListener;void tick(float dt);void dealloc();virtual void ccTouchesBegan(CCSet* pTouches, CCEvent* pEvent);virtual void ccTouchesMoved(CCSet* pTouches, CCEvent* pEvent);//void ccTouchesCancelled(CCSet* pTouches, CCEvent* pEvent);virtual void ccTouchesEnded(CCSet* pTouches, CCEvent* pEvent);};#endif // __HELLOWORLD_SCENE_H__

Helloworldscene. cpp

#include "HelloWorldScene.h"USING_NS_CC;CCScene* HelloWorld::scene(){    // 'scene' is an autorelease object    CCScene *scene = CCScene::create();        // 'layer' is an autorelease object    HelloWorld *layer = HelloWorld::create();    // add layer as a child to scene    scene->addChild(layer);    // return the scene    return scene;}// on "init" you need to initialize your instancebool HelloWorld::init(){CCSize winSize = CCDirector::sharedDirector()->getWinSize();b2Vec2 gravity = b2Vec2(0.0f, 0.0f);_world = new b2World(gravity);b2BodyDef groundBodyDef;groundBodyDef.position.Set(0, 0);_groundBody = _world->CreateBody(&groundBodyDef);b2EdgeShape groundBox;b2FixtureDef groundBoxDef;groundBoxDef.shape = &groundBox;groundBox.Set(b2Vec2(0, 0), b2Vec2(winSize.width/PTM_RATIO, 0));_bottomFixture = _groundBody->CreateFixture(&groundBoxDef);groundBox.Set(b2Vec2(0, 0), b2Vec2(0, winSize.height/PTM_RATIO));_groundBody->CreateFixture(&groundBoxDef);groundBox.Set(b2Vec2(0, winSize.height/PTM_RATIO), b2Vec2(winSize.width/PTM_RATIO, winSize.height/PTM_RATIO));_groundBody->CreateFixture(&groundBoxDef);groundBox.Set(b2Vec2(winSize.width/PTM_RATIO, winSize.height/PTM_RATIO),b2Vec2(winSize.width/PTM_RATIO, 0));_groundBody->CreateFixture(&groundBoxDef);CCSprite *ball = CCSprite::create("ball.png");ball->setTag(1);ball->setPosition(ccp(100, 100));addChild(ball);b2BodyDef ballBodyDef;ballBodyDef.type = b2_dynamicBody;ballBodyDef.type = b2_dynamicBody;ballBodyDef.position.Set(100/PTM_RATIO, 100/PTM_RATIO);ballBodyDef.userData = ball;b2Body* ballBody = _world->CreateBody(&ballBodyDef);b2CircleShape circle;circle.m_radius = 26.0/PTM_RATIO;b2FixtureDef ballShapeDef;ballShapeDef.shape = &circle;ballShapeDef.density = 1.0f;ballShapeDef.friction = 0.0f;ballShapeDef.restitution = 1.0f;_ballFixture = ballBody->CreateFixture(&ballShapeDef);b2Vec2 force = b2Vec2(10, 10);ballBody->ApplyLinearImpulse(force, ballBodyDef.position);CCSprite* paddle = CCSprite::create("paddle.png");paddle->setPosition(ccp(winSize.width/2, 50));addChild(paddle);b2BodyDef paddleBodyDef;paddleBodyDef.type = b2_dynamicBody;paddleBodyDef.position.Set(winSize.width/2/PTM_RATIO, 50/PTM_RATIO);paddleBodyDef.userData = paddle;_paddleBody = _world->CreateBody(&paddleBodyDef);b2PolygonShape paddleShape;paddleShape.SetAsBox(paddle->getContentSize().width/PTM_RATIO/2, paddle->getContentSize().height/PTM_RATIO/2);b2FixtureDef paddleShapeDef;paddleShapeDef.shape = &paddleShape;paddleShapeDef.density = 10.0f;paddleShapeDef.friction = 0.4f;paddleShapeDef.restitution = 0.1f;_paddleFixture = _paddleBody->CreateFixture(&paddleShapeDef);setTouchEnabled(true);_mouseJoint = NULL;b2PrismaticJointDef jointDef;b2Vec2 worldAxis(1.0f, 0.0f);jointDef.collideConnected = true;jointDef.Initialize(_paddleBody, _groundBody,_paddleBody->GetWorldCenter(), worldAxis);_world->CreateJoint(&jointDef);_contactListener = new MyContactListener();_world->SetContactListener(_contactListener);for (int i = 0; i < 4; i++) {static int padding=20;CCSprite* block = CCSprite::create("block.png");int xOffset = padding + block->getContentSize().width/2 +((block->getContentSize().width + padding)*i);block->setPosition(ccp(xOffset, 250));block->setTag(2);addChild(block);b2BodyDef blockBodyDef;blockBodyDef.type = b2_dynamicBody;blockBodyDef.position.Set(xOffset/PTM_RATIO, 250/PTM_RATIO);blockBodyDef.userData = block;b2Body* blockBody = _world->CreateBody(&blockBodyDef);b2PolygonShape blockShape;blockShape.SetAsBox(block->getContentSize().width/PTM_RATIO/2,block->getContentSize().height/PTM_RATIO/2);b2FixtureDef blockShapeDef;blockShapeDef.shape = &blockShape;blockShapeDef.density = 10.0;blockShapeDef.friction = 0.0;blockShapeDef.restitution = 0.1f;blockBody->CreateFixture(&blockShapeDef);}schedule(schedule_selector(HelloWorld::tick));//dealloc();    return true;}void HelloWorld::menuCloseCallback(CCObject* pSender){    CCDirector::sharedDirector()->end();#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)    exit(0);#endif}void HelloWorld::tick(float dt) {bool blockFound = false;_world->Step(dt, 10, 10);for (b2Body* b = _world->GetBodyList(); b; b = b->GetNext()) {if (b->GetUserData() != NULL) {CCSprite* sprite = (CCSprite*)b->GetUserData();if (sprite->getTag() == 2) {blockFound = true;}sprite->setPosition(ccp(b->GetPosition().x*PTM_RATIO, b->GetPosition().y*PTM_RATIO));sprite->setRotation(-1*CC_RADIANS_TO_DEGREES(b->GetAngle()));if (sprite->getTag() == 1) {static int maxSpeed = 10;b2Vec2 velocity = b->GetLinearVelocity();float32 speed = velocity.Length();if (speed > maxSpeed) {b->SetLinearDamping(0.5);} else if (speed < maxSpeed) {b->SetLinearDamping(0.0);}}}}std::vector<b2Body*> toDestroy;std::vector<MyContact>::iterator pos;for (pos = _contactListener->_contacts.begin(); pos != _contactListener->_contacts.end(); ++pos) {MyContact contact = *pos;if ((contact.fixtureA == _bottomFixture && contact.fixtureB == _ballFixture)|| (contact.fixtureA == _ballFixture && contact.fixtureB == _bottomFixture)) {CCLog("You Lose :[");}b2Body* bodyA = contact.fixtureA->GetBody();b2Body* bodyB = contact.fixtureB->GetBody();if (bodyA->GetUserData() != NULL && bodyB->GetUserData() != NULL) {CCSprite* spriteA = (CCSprite*)bodyA->GetUserData();CCSprite* spriteB = (CCSprite*)bodyB->GetUserData();if (spriteA->getTag() == 1 && spriteB->getTag() == 2) {if (std::find(toDestroy.begin(),  toDestroy.end(), bodyB) == toDestroy.end()) {toDestroy.push_back(bodyB);}} else if (spriteA->getTag() == 2 && spriteB->getTag() == 1) {if (std::find(toDestroy.begin(), toDestroy.end(), bodyA) == toDestroy.end()) {toDestroy.push_back(bodyA);}}}}std::vector<b2Body*>::iterator pos2;for (pos2 = toDestroy.begin(); pos2 != toDestroy.end(); ++pos2) {b2Body* body = *pos2;if (body->GetUserData() != NULL) {CCSprite* sprite = (CCSprite*)body->GetUserData();this->removeChild(sprite);}_world->DestroyBody(body);}if (!blockFound) {CCLog("You Won!");}}void HelloWorld::dealloc() {delete _world;_groundBody = NULL;delete _contactListener;}void HelloWorld::ccTouchesBegan(CCSet* pTouches, CCEvent* pEvent) {if (_mouseJoint != NULL) return;CCTouch* myTouch = (CCTouch*)pTouches->anyObject();CCPoint location = myTouch->getLocation();location = CCDirector::sharedDirector()->convertToGL(location);b2Vec2 locationWorld = b2Vec2(location.x/PTM_RATIO, location.y/PTM_RATIO);//if (_paddleFixture->TestPoint(locationWorld)) {if (1) {b2MouseJointDef md;md.bodyA = _groundBody;md.bodyB = _paddleBody;md.target = locationWorld;md.collideConnected = true;md.maxForce = 1000.0f*_paddleBody->GetMass();_mouseJoint = (b2MouseJoint*)_world->CreateJoint(&md);_paddleBody->SetAwake(true);}}void HelloWorld::ccTouchesMoved(CCSet* pTouches, CCEvent* pEvent) {if (_mouseJoint == NULL) return;CCTouch* myTouch = (CCTouch*)pTouches->anyObject();CCPoint location = myTouch->getLocation();location = CCDirector::sharedDirector()->convertToGL(location);b2Vec2 locationWorld = b2Vec2(location.x/PTM_RATIO, location.y/PTM_RATIO);_mouseJoint->SetTarget(locationWorld);}/*void HelloWorld::ccTouchesCancelled(CCSet* pTouches, CCEvent* pEvent) {if (_mouseJoint) {_world->DestroyJoint(_mouseJoint);_mouseJoint = NULL;}}*/void HelloWorld::ccTouchesEnded(CCSet* pTouches, CCEvent* pEvent) {if (_mouseJoint) {_world->DestroyJoint(_mouseJoint);_mouseJoint = NULL;}}

Mycontactlistener. h

#ifndef __MYCONTACTLISTENER_H__#define __MYCONTACTLISTENER_H__#include <vector>#include <algorithm>#include "Box2D/Box2D.h"struct MyContact {b2Fixture* fixtureA;b2Fixture* fixtureB;bool operator==(const MyContact& other) const {return (fixtureA == other.fixtureA) && (fixtureB == other.fixtureB);}};class MyContactListener: public b2ContactListener {public:std::vector<MyContact> _contacts;MyContactListener();~MyContactListener();virtual void BeginContact(b2Contact* contact);virtual void EndContact(b2Contact* contact);virtual void PreSolve(b2Contact* contact, const b2Manifold* oldManifold);virtual void PostSolve(b2Contact* contact, const b2ContactImpulse* impulse);};#endif

Mycontactlistener. cpp

#include "MyContactListener.h"#include "HelloWorldScene.h"USING_NS_CC;MyContactListener::MyContactListener(): _contacts() {}MyContactListener::~MyContactListener() {}void MyContactListener::BeginContact(b2Contact* contact) {MyContact myContact = { contact->GetFixtureA(), contact->GetFixtureB() };_contacts.push_back(myContact);}void MyContactListener::EndContact(b2Contact* contact) {MyContact myContact = { contact->GetFixtureA(), contact->GetFixtureB() };std::vector<MyContact>::iterator pos;pos = std::find(_contacts.begin(), _contacts.end(), myContact);if (pos != _contacts.end()) {_contacts.erase(pos);}}void MyContactListener::PreSolve(b2Contact* contact, const b2Manifold* oldManifold) {}void MyContactListener::PostSolve(b2Contact* contact, const b2ContactImpulse* impulse) {}