超级马丽与怪物水平碰撞和跳起上下碰撞检测

超级马丽与怪物的碰撞检测，利用intersectsRect函数检测碰撞。水平碰撞时，怪物杀了超级马丽；跳起来踩怪物时，怪物被杀死。

EnemyVSHero CCEnemy::checkCollisionWithHero()
{
    EnemyVSHero ret = eVS_nonKilled;

    CCPoint heroPos = CCHero::getHeroInstance()->getPosition();
    CCSize heroSize = CCHero::getHeroInstance()->getContentSize();
    CCRect heroRect = CCRectMake(heroPos.x - heroSize.width/2 + 2, heroPos.y + 3, 
        heroSize.width - 4, heroSize.height - 4);

    CCRect heroRectVS = CCRectMake(heroPos.x - heroSize.width/2 - 3, heroPos.y, 
        heroSize.width - 6, 2);

    CCPoint enemyPos = this->getPosition();
    CCRect enemyRect = CCRectMake(enemyPos.x - bodySize.width/2 + 1, enemyPos.y, 
        bodySize.width - 2, bodySize.height - 4);

    CCRect enemyRectVS = CCRectMake(enemyPos.x - bodySize.width/2 - 2, enemyPos.y + bodySize.height - 4, 
        bodySize.width - 4, 4);

    if (heroRectVS.intersectsRect(enemyRectVS))
    {
        ret = eVS_enemyKilled;
        return ret;
    }

    if (heroRect.intersectsRect(enemyRect))
    {
        ret = eVS_heroKilled;
        return ret;
    }

    return ret;
}

画一张图，看起来容易理解。