#include "HelloWorldScene.h"
#include "SimpleAudioEngine.h"

using namespace cocos2d;
using namespace CocosDenshion;

CCScene* HelloWorld::scene()
{
    CCScene *scene = CCScene::create();
    HelloWorld *layer = HelloWorld::create();
    scene->addChild(layer);
    return scene;
}
bool HelloWorld::init()
{
    if ( !CCLayer::init() )
    {
        return false;
    }
    size = CCDirector::sharedDirector()->getWinSize();
    
    CCLayerColor* background = CCLayerColor::create(ccc4(255, 200, 255, 255), size.width, size.height);
    this->addChild(background);
    
    //儲存子彈節點
    bulltArr = CCArray::create();
    CC_SAFE_RETAIN(bulltArr);
    //儲存 CCMotionStreak
    streakArr = CCArray::create();
    CC_SAFE_RETAIN(streakArr);
    
    scheduleUpdate();
    
    return true;
}

void HelloWorld::update(float delta)
{
    for (int i = 0; i < bulltArr->count(); i++) {
        CCSprite* bullt = (CCSprite*)bulltArr->objectAtIndex(i);
        bullt->setPositionY(bullt->getPositionY()+2);
        
        CCMotionStreak* streak = (CCMotionStreak*)streakArr->objectAtIndex(i);
        //每次呼叫setPosition函式重新設定物件位置時，“影子”將被建立並且慢慢漸隱  注：對於CCMotionStreak物件不可用getPosition()等方法。。
        streak->setPosition(bullt->getPosition());
    }
    
    for (int i = 0; i < bulltArr->count(); i++) {
        CCSprite* bullt = (CCSprite*)bulltArr->objectAtIndex(i);
        //刪除超出螢幕節點
        if (bullt->getPositionY() >= size.height+bullt->getContentSize().height) {
            this->removeChild(bullt);
            bulltArr->removeObject(bullt);
            
            CCSprite* streak = (CCSprite*)streakArr->objectAtIndex(i);
            this->removeChild(streak);
            streakArr->removeObject(streak);
            
            break;
        }
    }
}

//拖尾效果類CCMotionStreak
//建立 子彈節點 和 CCMotionStreak物件
void HelloWorld::createBullt(CCPoint startPoint)
{
    CCSprite* bullt = CCSprite::create("bullet3.png");
    bullt->setPosition(startPoint);
    this->addChild(bullt,2);
    bulltArr->addObject(bullt);
    
    //第一個引數是間隱的時間，第二個引數是間隱片斷的大小，第三個引數是貼圖的寬高，第四個引數是顏色值RGB，第五個引數是貼圖的路徑或者貼圖物件
    CCMotionStreak* streak = CCMotionStreak::create(0.8, 10, 10, ccRED, "bullet3.png");
    streak->setPosition(startPoint);
    this->addChild(streak,1);
    streakArr->addObject(streak);
}

bool HelloWorld::ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent)
{
    createBullt(pTouch->getLocation());
    return true;
}

void HelloWorld::ccTouchMoved(CCTouch *pTouch, CCEvent *pEvent){}
void HelloWorld::ccTouchEnded(CCTouch *pTouch, CCEvent *pEvent){}
void HelloWorld::onEnter()
{
    CCDirector::sharedDirector()->getTouchDispatcher()->addTargetedDelegate(this, 0, false);
    CCLayer::onEnter();
}
void HelloWorld::onExit()
{
    CCDirector::sharedDirector()->getTouchDispatcher()->removeDelegate(this);
    CCLayer::onExit();
}

HelloWorld::~HelloWorld()
{
    CC_SAFE_RELEASE(bulltArr);
    CC_SAFE_RELEASE(streakArr);
}