Cocos2d-x游戏开发之 《捕鱼达人》 总结

<1>初始化plist文件，使用plist里面的资源

CCSpriteFrameCache::sharedSpriteFrameCache()->addSpriteFramesWithFile("xxx.plist");

CCSprite* sprite  =  CCSprite::createWithSpriteFrameName("xxx.png");

其实有时,还需要这样加载:

//CCSpriteFrameCache（精灵帧缓存）主要用来存放CCSpriteFrame，它没有提供特别的属性，而是提供一系列用于管理CCSpriteFrame的方法  

CCSpriteFrameCache::sharedSpriteFrameCache()->addSpriteFramesWithFile("sprite_sheet.plist","sprite_sheet.png");  
_gameBatchNode = CCSpriteBatchNode::create("sprite_sheet.png", 200);  
this->addChild(_gameBatchNode, kMiddleground);

<2>定时器

schedule(schedule_selector(GameLayer::createFishTick), 1.0f);

<3>鱼的游动

void GameLayer::createOneFish(int type)
{
	char buf[64];
	int fishtype = (int)(1000 * CCRANDOM_0_1()) % 2;  //type是同一种鱼的不同动作，fishtype是不同的鱼
	sprintf(buf, "fish_%d_%d.png", fishtype, type);

	CCSprite* fish = CCSprite::createWithSpriteFrameName(buf);
	float x = (int)(1000 * CCRANDOM_0_1()) % 80;
	float y = 30 + (int)(1000 * CCRANDOM_0_1()) % 300;
	fish->setPosition(ccp(x, y));
	this->addChild(fish);
	fishArray->addObject(fish);           ///////////////////////////将创建的鱼加到数组中

	/***让鱼游动起来***/
	CCArray* arr = CCArray::create();
	for(int i = 0; i < 8; i++)  //取得8个动画帧存到数组中
	{
		char fishbuf[64];
		sprintf(fishbuf, "fish_%d_%d.png", fishtype, i);
		//找到图片转化为精灵帧
		CCSpriteFrame* sf = CCSpriteFrameCache::sharedSpriteFrameCache()->spriteFrameByName(fishbuf);
		//动画帧
		CCAnimationFrame* af = new CCAnimationFrame();
		af->initWithSpriteFrame(sf, 1, NULL);
		af->autorelease();
		arr->addObject(af);
	}

	//创建一个动画
	CCAnimation* animation = CCAnimation::create(arr, 0.2);
	CCAnimate* animateAction = CCAnimate::create(animation);
	CCRepeatForever* rf = CCRepeatForever::create(animateAction);

	//
	CCPoint destPoint(600, y);
	float dt = 5 + (int)(1000 * CCRANDOM_0_1()) % 5;

	//鱼沿Bezier曲线游动
	ccBezierConfig config;
	config.endPosition = destPoint;
	config.controlPoint_1 = ccp(200, 100);
	config.controlPoint_2 = ccp(100, 300);
	CCBezierTo* move = CCBezierTo::create(dt, config);

	//
	CCCallFuncN* moveDone = CCCallFuncN::create(this, callfuncN_selector(GameLayer::moveFinish));
	CCFiniteTimeAction* allActions = CCSequence::create(rf, move, moveDone, NULL);

	fish->runAction(allActions);
}

鱼游动完移除

void GameLayer::moveFinish(cocos2d::CCNode* sender)
{
	CCSprite* sprite = (CCSprite*)sender;
	sprite->removeFromParentAndCleanup(true);  
	fishArray->removeObject(sprite);  ////////////////////////////////////移除鱼
}

<3>发射子弹

void GameLayer::ccTouchesEnded(CCSet *pTouches, CCEvent *pEvent)
{
	CCLog("GamerLayer::ccTouchesEnded called");
	//得到触摸位置
	CCTouch* oneTouch = (CCTouch*)pTouches->anyObject();
	CCPoint glPoint = oneTouch->getLocation();
	CCPoint layerPoint = convertToNodeSpace(glPoint); 

	//发射子弹
	CCSprite* bulletSprite = CCSprite::createWithSpriteFrameName("bullet.png");
	bulletSprite->setPosition(ccp(250, 45));
	this->addChild(bulletSprite);
	bulletArray->addObject(bulletSprite); //////////////////////////////////////////////////添加子弹

	//在第一颗子弹刚创建完毕，还未发射时，设置一个定时器，每隔0.1秒进行一次碰撞检测
	schedule(schedule_selector(GameLayer::isFishAndBullerCash), 0.1f);

	CCMoveTo* move = CCMoveTo::create(1.0f, layerPoint);   //用1秒的时间完成从初始位置到触摸位置的动作
	CCCallFuncN* moveFinish = CCCallFuncN::create(this, callfuncN_selector(GameLayer::bulletMoveFinish) );
	CCFiniteTimeAction* allActions = CCSequence::create(move, moveFinish, NULL);
	bulletSprite->runAction(allActions);
}

<4>移除子弹

void GameLayer::bulletMoveFinish(cocos2d::CCNode* sender)
{
	//得到子弹精灵
	CCSprite* sprite = (CCSprite*)sender;
	//得到子弹位置
	CCPoint bulletPoint = sprite->getPosition();  
	
	//移除子弹 
	bulletArray->removeObject(sprite);         ////////////////////////////////////移除子弹
	sprite->removeFromParentAndCleanup(true);
}

<5>碰撞检测

void GameLayer::isFishAndBullerCash(float dt)
{
	CCObject* fishObj = NULL;
	CCObject* bulletObj = NULL;
	CCARRAY_FOREACH(fishArray, fishObj)
	{
		CCARRAY_FOREACH(bulletArray, bulletObj)
		{
			CCSprite* fishSprite = (CCSprite*)fishObj;
			CCSprite* bulletSprite = (CCSprite*)bulletObj;

			CCRect fishRect = fishSprite->boundingBox();
			CCPoint bulletPoint = bulletSprite->getPosition();
			if(fishRect.containsPoint(bulletPoint))
			{
				bulletSprite->removeFromParentAndCleanup(true);  
				//加载鱼网
				CCSprite* netSprite = CCSprite::createWithSpriteFrameName("fishing_net.png");
				netSprite->setScale(0.5);  //缩放
				netSprite->setPosition(bulletPoint);
				addChild(netSprite);

				//鱼网用0.1秒进行从0.5 到 1.0 的缩放动作
				CCScaleTo* scale = CCScaleTo::create(0.1, 1.0);
				CCCallFuncN* scaleDone = CCCallFuncN::create(this, callfuncN_selector(GameLayer::scaleDone));
				CCFiniteTimeAction* allActions = CCSequence::create(scale, scaleDone, NULL);
				netSprite->runAction(allActions);
			}
		}
	}
}