#include "towers.h"

#include <cmath>

Towers::Towers(Game_Data *gd, QObject *parent) :
		QObject(parent)
{
	gameData = gd;
}

bool Towers::addTower(int playerId, int srcId, QPoint pos)
{
	//QByteArray ar;
	//ar << pos;
	if (playerId < 0 || playerId >= gameData->players.size())
	{
		qCritical("ERROR out of players range");
		return false;
	}
	if (srcId < 0 || srcId >= gameData->players.at(playerId)->srcTowers.size())
	{
		qCritical("ERROR out of towers range");
		return false;
	}
	QRect alrec(pos,QSize(2,2));
	for (QHash<int, AlienType>::iterator i = gameData->curAliens.begin(); i != gameData->curAliens.end(); ++i)
		if (alrec.contains((*i).pos.toPoint())) return false;
	TowerType tw;
	tw.src = srcId;
	tw.imgType = gameData->players.at(playerId)->srcTowers.at(srcId).imgType;
	tw.PlayerId = playerId;
	tw.angle = 0;
	tw.build = 0;
	tw.reload = 0;
	tw.aim = -1;
	tw.experience = 0;
	//tw .oldAim = -1;
	if (gameData->map->addTowerOnMap(playerId,pos))
	{
		tw.pos = pos;
		//qDebug() << "tw" << pos;
		//gameData->map->printMap();
		gameData->curTowers.insert(tw.pos,tw);
		return true;
	}
	return false;
}


void Towers::delTower(QPoint pos)
{
	if (gameData->curTowers.contains(pos))
	{
		gameData->map->delTowerOnMap(gameData->curTowers.value(pos).PlayerId,pos);
		gameData->curTowers.remove(pos);
	}
}


void Towers::update()
{
	for (QHash<QPoint, TowerType>::iterator i = gameData->curTowers.begin(); i != gameData->curTowers.end(); ++i)
	{
		srcTowerType stw = gameData->players.at((*i).PlayerId)->srcTowers.at((*i).src);
		if ((*i).build < stw.buildTime)
		{
			(*i).build++;
			//qDebug() << "building tower ..." << (*i).build;
		} else {
			if (!(gameData->curAliens.contains((*i).aim)))
				(*i).aim = -1;
			else
			{
				if (distance2((*i).pos,gameData->curAliens.value((*i).aim).pos) > stw.radius*stw.radius)
					(*i).aim = -1;
			}
			if (gameData->players.at((*i).PlayerId)->selectAlienId > 0)
			{
				AlienType al = gameData->curAliens.value(gameData->players.at((*i).PlayerId)->selectAlienId);
				if (distance2(al.pos, (*i).pos) < stw.radius*stw.radius) (*i).aim = al.id;
			}
			if ((*i).aim < 0)
			{
				for (QHash<int, AlienType>::iterator j = gameData->curAliens.begin(); j != gameData->curAliens.end(); ++j)
				{
					float dist = distance2((*i).pos, (*j).pos);
					//qDebug() << "dist=" << dist << "radius=" << stw.radius*stw.radius;
					if (dist < stw.radius*stw.radius) (*i).aim = (*j).id;
					//else (*i).aim = -1;
				}
			}
			// TODO: calculate tower angl
			if ((*i).aim > 0)
			{
				float arctg = std::atan2((*i).pos.x() - gameData->curAliens.value((*i).aim).pos.x(),(*i).pos.y() - gameData->curAliens.value((*i).aim).pos.y());
				//if (tmpdy < 0) arctg=arctg+M_PI;
				(*i).angle = 180.0f*(-arctg)/M_PI;
			}
			// TODO: smooth rotate tower to aim
			if ((*i).reload < stw.reload)
				(*i).reload++;
			else
			{
				if ((*i).aim > 0)
				{
					(*i).reload = 0;
					(*i).experience += stw.expByShot;
					emit shot((*i).pos);
					//qDebug("shot!");
				}
			}
		}
		//qDebug() << "aim=" << (*i).aim;
	}
}