/*
Copyright (C) 2007, 2010 - Bit-Blot

This file is part of Aquaria.

Aquaria is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/
#include "Web.h"	
#include "DSQ.h"
#include "Game.h"
#include "Avatar.h"

Web::Webs Web::webs;

Web::Web() : RenderObject()
{
	addType(SCO_WEB);
	webs.push_back(this);
	cull = false;
	parentEntity = 0;
	existence = 0;
}

void Web::setParentEntity(Entity *e)
{
	parentEntity = e;
}

void Web::killAllWebs()
{	
	std::queue<Web*>shotDeleteQueue;
	for (Webs::iterator i = webs.begin(); i != webs.end(); i++)	
	{
		shotDeleteQueue.push(*i);
	}
	Web *s = 0;
	while (!shotDeleteQueue.empty())
	{
		s = shotDeleteQueue.front();
		if (s)
		{
			s->safeKill();
		}
		shotDeleteQueue.pop();
	}
	webs.clear();
}

void Web::onEndOfLife()
{
	RenderObject::onEndOfLife();
	webs.remove(this);
}

void Web::setExistence(float t)
{
	existence = t;
}

int Web::addPoint(const Vector &point)
{
	points.push_back(point);
	return points.size()-1;
}

void Web::setPoint(int pt, const Vector &v)
{
	if (pt < 0 || pt >= points.size()) return;
	points[pt] = v;
}

int Web::getNumPoints()
{
	return points.size();
}

void Web::onUpdate(float dt)
{
	RenderObject::onUpdate(dt);

	if (!dsq->game->isPaused())
	{
		if (existence > 0)
		{
			existence -= dt;
			if (existence <= 0)
			{
				existence = 0;
				setLife(1);
				setDecayRate(1);
				fadeAlphaWithLife = 1;
				dsq->sound->playSfx("spiderweb");
			}
		}

		if (dsq->game->avatar && dsq->game->avatar->isInputEnabled())
		{
			FOR_ENTITIES(i)
			{
				bool hit = false;
				Entity *e = (*i);
				if ((e->getEntityType() == ET_ENEMY || e->getEntityType() == ET_AVATAR) && e->isDamageTarget(DT_ENEMY_WEB))
				{
					if (parentEntity != e)
					{
						for (int j = 0; j < points.size()-1; j++)
						{
							if (game->collideCircleVsLine(e, points[j], points[j+1], 4))
							{
								hit = true;
								break;
							}
						}
					}
				}
				if (hit)
				{
					/*
					if (!e->vel.isZero())
					{
						Vector n = e->vel;
						n.setLength2D(e->getv(EV_WEBSLOW)*dt);
						e->vel -= n;
					}
					*/
					e->vel /= float(e->getv(EV_WEBSLOW)) * dt;
				}
			}
		}
	}
}

void Web::onRender()
{
#ifdef BBGE_BUILD_OPENGL
	glBindTexture(GL_TEXTURE_2D, 0);
	//glDisable(GL_BLEND);
	
	glLineWidth(4);
	glDisable(GL_CULL_FACE);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

	glBegin(GL_LINES);
	for (int i = 0; i < points.size()-1; i++)
	{		
		
		glColor4f(1, 1, 1, 0.5f*alpha.x);
		glVertex3f(points[i].x, points[i].y, 0);
		glColor4f(1, 1, 1, 0.5f*alpha.x);
		glVertex3f(points[i+1].x, points[i+1].y, 0);
		
	}
	glEnd();
#endif
}