塔的旋转

//
// TD.cpp
// newtafang
//
// Created by liufuyu on 14-9-11.
//
//

#include "TD.h"
#include "GameScene.h"
#include "Enemy.h"
#include"Bullet.h"
TD *TD::createNewTD(int type,int r, int c)
{
TD *newTD=TD::create();
if(type==1){
auto baseplate=Sprite::createWithSpriteFrame(SpriteFrameCache::getInstance()->
getSpriteFrameByName("baseplate.png"));
baseplate->setAnchorPoint(Vec2::ZERO);
newTD->addChild(baseplate);
baseplate->setTag(10);
newTD->setAnchorPoint(Vec2::ZERO);
newTD->setPosition(c*96,(8-r)*96);
newTD->type=type;
newTD->row=r;
newTD->col=c;
auto rotateArrow=Sprite::createWithSpriteFrameName("arrow.png");
rotateArrow->setPosition(65,baseplate->getContentSize().height/2);
rotateArrow->setTag(11);
baseplate->addChild(rotateArrow);
newTD->schedule(schedule_selector(TD::roateAndShoot),0.5);
}
return newTD;
}
bool TD::init()
{
if(!Node::init())
{
return false;
}

return true;
}
void TD::roateAndShoot(float t)
{
if(GameScene::allEnemy.size()==0)
{return ;}
//根据塔的类型做不同的子弹发射和旋转
auto rotateArrow=this->getChildByTag(10)->getChildByTag(11);
//1得到最近的敌人
//auto nowEnemy=GameScene::allEnemy.at(i);
float lenth=0;
int index=0;//保存第几个敌人离塔最近
for(int i=0;i<GameScene::allEnemy.size();i++)
{
//得到第i个敌人
auto nowEnemy=GameScene::allEnemy.at(i);
if(lenth==0)
{
lenth=this->getPosition().distance(nowEnemy->getPosition());
}
else
{
if(this->getPosition().distance(nowEnemy->getPosition())<lenth)
{
lenth=this->getPosition().distance(nowEnemy->getPosition());
index=i;
}
}

}
objEnemyIndex=index;
Vec2 rotateVector=GameScene::allEnemy.at(index)->getPosition()-this->getPosition();
float rotateRadians=rotateVector.getAngle();//旋转角度
float rotateDegrees=CC_RADIANS_TO_DEGREES(-1*rotateRadians);
this->ang=rotateDegrees;

float speed=0.5 /M_PI;
float rotateDuration= fabs(rotateRadians * speed);
rotateArrow->runAction(Sequence::create(
RotateTo::create(rotateDuration,rotateDegrees),
CallFunc::create(CC_CALLBACK_0(TD::shoot, this)),nullptr));
}
void TD::shoot()
{
// CCLOG("开始射箭了");
if(GameScene::allEnemy.size()==0)
{return ;}
if(objEnemyIndex>GameScene::allEnemy.size()-1){return;}

auto bullet=Bullet::newBullet(1, this->ang,col*96,(8-row)*96,GameScene::allEnemy.at(objEnemyIndex)->getPosition().x, GameScene::allEnemy.at(objEnemyIndex)->getPosition().y );
this->getParent()->addChild(bullet);
GameScene::allBullet.pushBack(bullet);
}