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/*
   game/racetrack.cc
   This file is part of the Osirion project and is distributed under 
   the terms and conditions of the GNU General Public License version 2 
*/

#include <string>
#include <sstream>

#include "game/racetrack.h"
#include "core/gameserver.h"

namespace game {

/* ---- class CheckPoint ------------------------------------------- */

CheckPoint::CheckPoint(RaceTrack *parent)
{
	entity_eventstate = core::Entity::NoPower;
	parent_track = parent;
	if (parent) {
		entity_color = parent->color();
		entity_color_second = parent->color_second();
		set_zone(parent->zone());
		parent->add_checkpoint(this);
	} else {
		die();
	}
}

CheckPoint::~CheckPoint()
{
	
}

/* ---- class RaceTrack -------------------------------------------- */

RaceTrack::RaceTrack()
{
	track_player = 0;
	track_racestart = 0;
	track_checkpointtime = 0;

	entity_eventstate = core::Entity::NoPower;
}

RaceTrack::~RaceTrack()
{
	track_checkpoints.clear();
}

void RaceTrack::add_checkpoint(CheckPoint *checkpoint)
{
	track_checkpoints.push_back(checkpoint);
}

void RaceTrack::reset()
{
	track_player = 0;
	track_racestart = 0;
	track_checkpointtime = 0;
	
	for (CheckPoints::iterator cpit = track_checkpoints.begin(); cpit != track_checkpoints.end(); ++cpit) {
		(*cpit)->entity_eventstate |= core::Entity::NoPower;
		(*cpit)->entity_dirty = true;
	}

	entity_eventstate |= core::Entity::NoPower;
	entity_dirty = true;
}

void RaceTrack::frame(float seconds)
{
	if (!track_checkpoints.size())
		return;

	if (!track_player) {

		// FIXME this should go through proper collision detection
		for (core::GameServer::Players::iterator it = core::server()->players().begin(); it != core::server()->players().end(); ++it) {
			if ((*it)->control() && (*it)->control()->zone() == zone()) {
				if (math::distance((*it)->control()->location(), location()) <= 1) {
					track_player = (*it);

					track_racestart = core::server()->time();
					entity_eventstate &= (~core::Entity::NoPower);
					entity_dirty = true;

					for (CheckPoints::iterator cpit = track_checkpoints.begin(); cpit != track_checkpoints.end(); ++cpit) {
						(*cpit)->entity_eventstate &= (~core::Entity::NoPower);
						(*cpit)->entity_dirty = true;
					}
					
					entity_timer = 5.0f;
					std::string message("^B");
					message.append(track_player->name());
					message.append(" ^Bactivated the race! Race starts in 5...");
					core::server()->broadcast(message);
					return;
				}
			}
		}

		return;
	}

	// FIXME this should go into a proper general function
	// validate current player
	core::Player *player = 0;
	for (core::GameServer::Players::iterator pit = core::server()->players().begin(); (!player) && (pit != core::server()->players().end()); ++pit) {
		if ((*pit) == track_player) {
			player = (*pit);
		}
	}

	if (!player) {
		reset();
		return;
	}

	if (!player->control() || (player->control()->zone() != zone())) {
		reset();
		return;
	}

	if (entity_timer) {

		if (math::distance(player->control()->location(), location()) > 1) {
			std::string message("^BNo cheating!");
			core::server()->broadcast(message);
			reset();
			return;
		}

		if (track_racestart + 1.0f <= core::server()->time()) {
			entity_timer -= 1.0f;
			entity_dirty = true;

			if (entity_timer > 0) {
				std::stringstream msgstr;
				msgstr << "^B" << entity_timer << "...";
				core::server()->broadcast(msgstr.str());
				track_racestart = core::server()->time();
			} else {
				for (CheckPoints::iterator cpit = track_checkpoints.begin(); cpit != track_checkpoints.end(); ++cpit) {
					(*cpit)->entity_eventstate |= core::Entity::NoPower;
					(*cpit)->entity_dirty = true;
				}
				std::string message("^BGo!");
				core::server()->broadcast(message);

				track_racestart = core::server()->time();
				track_checkpointtime = core::server()->time() + 15.0f;
				track_checkpoint = track_checkpoints.begin();
				(*track_checkpoint)->entity_eventstate &= ~core::Entity::NoPower;
				(*track_checkpoint)->entity_dirty = true;
			}
		}
		

	} else {

		if (core::server()->time() > track_checkpointtime) {
			std::string message("^BToo slow, race lost!");
			core::server()->broadcast(message);

			reset();
			return;
		}

		if (math::distance(track_player->control()->location(), (*track_checkpoint)->location()) <= 1) {
			CheckPoints::iterator next_checkpoint = track_checkpoint;
			next_checkpoint++;

			if (next_checkpoint != track_checkpoints.end()) {

				std::string message("^BCheckpoint!");
				core::server()->broadcast(message);
				track_checkpointtime = core::server()->time() + 15.0f;
				(*track_checkpoint)->entity_eventstate |= core::Entity::NoPower;
				(*track_checkpoint)->entity_dirty = true;
				track_checkpoint++;
				(*track_checkpoint)->entity_eventstate &= ~core::Entity::NoPower;
				(*track_checkpoint)->entity_dirty = true;

			} else {
				std::stringstream msgstr;
				msgstr << "^BRace completed in " << core::server()->time() - track_racestart << " seconds!";
				core::server()->broadcast(msgstr.str());
				track_player = 0;
				track_racestart = 0;
				track_checkpointtime = 0;

				reset();
			}
		}
	}
}

}