Star Fighter源码（cocos2d x 2.0.4+VS2010)

#include "HelloWorldScene.h" #include "GameOverLayer.h" using namespace cocos2d; CCScene* HelloWorld::scene() { CCScene * scene = NULL; do { // 'scene' is an autorelease object scene = CCScene::create(); CC_BREAK_IF(! scene); // 'layer' is an autorelease object HelloWorld *layer = HelloWorld::create(); CC_BREAK_IF(! layer); // add layer as a child to scene scene->addChild(layer); } while (0); // return the scene return scene; } // on "init" you need to initialize your instance bool HelloWorld::init() { bool bRet = false; do { ////////////////////////////////////////////////////////////////////////// // super init first ////////////////////////////////////////////////////////////////////////// CC_BREAK_IF(! CCLayer::init()); ////////////////////////////////////////////////////////////////////////// // add your codes below... ////////////////////////////////////////////////////////////////////////// // 添加游戏名字 Add a label shows "Star Fighter". // Create a label and initialize with string "Hello World". CCLabelTTF* pLabel = CCLabelTTF::create("Star Fighter", "Arial", 36); CC_BREAK_IF(! pLabel); // Get window size and place the label upper. CCSize size = CCDirector::sharedDirector()->getWinSize(); pLabel->setPosition(ccp(size.width / 2, size.height - 50)); // Add the label to HelloWorld layer as a child layer. this->addChild(pLabel, 1); // 添加背景Add a splash screen, show the cocos2d splash image. CCSprite* pSprite = CCSprite::create("bg_01.jpg"); CC_BREAK_IF(! pSprite); // Place the sprite on the center of the screen pSprite->setPosition(ccp(size.width/2, size.height/2)); // Add the sprite to HelloWorld layer as a child layer. this->addChild(pSprite, 0); //添加玩家player精灵 CCSize winSize = CCDirector::sharedDirector()->getWinSize(); CCSprite *player = CCSprite::create("player.png"); player->setPosition(ccp(winSize.width / 2, 50)); this->addChild(player, 2); this->_monsters = CCArray::create(); this->_monsters->retain(); this->_projectiles = CCArray::create(); this->_projectiles->retain(); this->schedule(schedule_selector(HelloWorld::gameLogic), 1); this->setTouchEnabled(true); this->schedule(schedule_selector(HelloWorld::update)); CocosDenshion::SimpleAudioEngine::sharedEngine()->playBackgroundMusic("background-music-aac.wav"); bRet = true; } while (0); //时创建怪物，在init函数返回之前，安装定时器，每秒执行一次 return bRet; } void HelloWorld::menuCloseCallback(CCObject* pSender) { // "close" menu item clicked CCDirector::sharedDirector()->end(); } void HelloWorld::addMonster() { CCSprite *monster = CCSprite::create("Monster1.png"); //使敌人敌机从上面出现时，左右显示是完整的,并在屏幕上方随机产生 //如果其他游戏是Y轴可以把x统一改为Y即可 CCSize winSize = CCDirector::sharedDirector()->getWinSize(); int minX = monster->getContentSize().width / 2; int maxX = winSize.width - monster->getContentSize().width / 2; int rangeX = maxX - minX; int actualX = (rand() % rangeX) + minX;//随机位置产生敌人 //设置敌机坐标 并显示出来 monster->setPosition(ccp(actualX,winSize.height + monster->getContentSize().height / 2)); this->addChild(monster); //使用随机函数控制飞机速度。改下面数字可以调整飞机速度，控制游戏难度，当然敌机、子弹的触碰区域大小等也会影响游戏难度。 int minDuration = 2.0; int maxDuration = 5.0; int rangeDuration = maxDuration - minDuration; int actualDuration = (rand() % rangeDuration) + minDuration; //即当整个飞机离开屏幕（注意默认锚点是图片的中心位置） CCMoveTo *actionMove = CCMoveTo::create(actualDuration, ccp(actualX,-monster->getContentSize().height / 2)); CCCallFuncN *actionMoveDone = CCCallFuncN::create(this, callfuncN_selector(HelloWorld::spriteMoveFinished)); monster->runAction(CCSequence::create(actionMove, actionMoveDone, NULL)); //为怪物精灵添加标签，并加入到数组 monster->setTag(1); _monsters->addObject(monster); } void HelloWorld::spriteMoveFinished(CCNode *sender) //回调函数spriteMoveFinished，进行删除精灵对象 { CCSprite *sprite = (CCSprite*)sender; this->removeChild(sprite, true); if (sprite->getTag() == 1) { _monsters->removeObject(sprite); //统计放跑敌机的数量,如果超过3个就失败 _life++; if(_life>=3) { CCScene *gameOverScene = GameOverLayer::sceneWithWon(false); CCDirector::sharedDirector()->replaceScene(gameOverScene); } } else if (sprite->getTag() == 2) { _projectiles->removeObject(sprite); } } void HelloWorld::gameLogic( float dt ) { this->addMonster(); } void HelloWorld::ccTouchesEnded(CCSet *pTouches, CCEvent *pEvent) { CCTouch *touch = (CCTouch*)pTouches->anyObject(); CCPoint location = this->convertTouchToNodeSpace(touch); CCSize winSize = CCDirector::sharedDirector()->getWinSize(); CCSprite *projectile = CCSprite::create("zd.png"); projectile->setPosition(ccp(winSize.width / 2, 50)); CCPoint offset = ccpSub(location, projectile->getPosition()); //关于子弹移动轨迹，主要是用了数学的勾股定理，平行线等分线段定理 CE:CB=DE:AB=CD:AC。 if (offset.y <= 0) { return; } this->addChild(projectile); CocosDenshion::SimpleAudioEngine::sharedEngine()->playEffect("shoot.mp3"); int realY = winSize.height + projectile->getContentSize().height / 2; //这里是子弹的消失点，也是理解该段的重点，即子弹如果没有碰撞则会在屏幕的尽头消失。 float ratio = (float)offset.x/ (float)offset.y;//offset.x,offset.y是上面CCPoint offset = ccpSub(location, projectile->getPosition());电脑算出来的。 int realX = (realY - projectile->getPosition().y) * ratio + projectile->getPosition().x;//利用等比例原理算出了realY的位置。 //原文该行(realX - projectile->getPosition().x) 直接写成了realX 错误 两侧的子弹会跟鼠标稍有偏差，偏差不大不仔细看不出来。 CCPoint realDest = ccp(realX, realY);//算出了预计子弹的消失点 //通过子弹经过的路径长度，等比例地控制子弹的运行时间 int offRealX = realX - projectile->getPosition().x; int offRealY = realY - projectile->getPosition().y; float length = sqrtf(offRealX * offRealX + offRealY * offRealY); float velocity = 480 / 1;//修改480该数字可以调整子弹运行的快慢 float realMoveDuration = length / velocity; projectile->runAction(CCSequence::create(CCMoveTo::create(realMoveDuration, realDest), CCCallFuncN::create(this, callfuncN_selector(HelloWorld::spriteMoveFinished)), NULL)); //如果横板游戏，发射点是x轴左侧的，就用该段。关于子弹移动轨迹，主要是用了数学的勾股定理，平行线等分线段定理 CE:CB=DE:AB=CD:AC。 //if (offset.x <= 0) //{ // return; //} //this->addChild(projectile); //int realX = winSize.width + projectile->getContentSize().width / 2; //这里是子弹的消失点，也是理解该段的重点，即子弹如果没有碰撞则会在屏幕的尽头消失。 //float ratio = (float)offset.y / (float)offset.x;//offset.x,offset.y是上面CCPoint offset = ccpSub(location, projectile->getPosition());电脑算出来的。 //int realY = (realX - projectile->getPosition().x) * ratio + projectile->getPosition().y;//利用等比例原理算出了realY的位置。 ////原文该行(realX - projectile->getPosition().x) 直接写成了realX 错误 两侧的子弹会跟鼠标稍有偏差，偏差不大不仔细看不出来。 //CCPoint realDest = ccp(realX, realY);//算出了预计子弹的消失点 ////通过子弹经过的路径长度，等比例地控制子弹的运行时间 //int offRealX = realX - projectile->getPosition().x; //int offRealY = realY - projectile->getPosition().y; //float length = sqrtf(offRealX * offRealX + offRealY * o