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

#include <vector>
#include <iomanip>

#include "sys/sys.h"
#include "core/entity.h"

namespace core
{

using math::Color;
using math::Vector3f;

/* ---- Static functions for the Entity registry ------------------- */

std::map<unsigned int, Entity *> Entity::registry;

void Entity::add(Entity *ent)
{
	std::map<unsigned int, Entity*>::iterator it;
	unsigned int id = 1;
	for (it = registry.begin(); it != registry.end() && id == (*it).second->id(); it++) {
		id++;
	}
	ent->entity_id = id;
	registry[id] = ent;
}

Entity *Entity::find(unsigned int id)
{
	std::map<unsigned int, Entity *>::iterator it = registry.find(id);
	if (it == registry.end())
		return 0;
	else
		return (*it).second;
}

void Entity::remove(unsigned int id)
{
	std::map<unsigned int, Entity *>::iterator it = registry.find(id);
	if (it != registry.end()) {
		delete((*it).second);
		registry.erase(it);
	}
}

void Entity::list()
{
	std::map<unsigned int, Entity *>::iterator it;
	for (it = registry.begin(); it != registry.end(); it++) {
		std::string typeindicator;
		Entity *entity = (*it).second;
		con_print << "  id " << std::setw(4) << entity->id()
			<< " type " << std::setw(4) << entity->type()
			<< ":" << std::setw(4) << entity->moduletype()
			<< " " << entity->name() << std::endl;
	}
	con_print << registry.size() << " registered entities" << std::endl;
}

/*----- Entity ----------------------------------------------------- */

Entity::Entity(unsigned int flags) :
	entity_location(0.0f, 0.0f, 0.0f),
	entity_color(1.0f, 1.0f, 1.0f, 1.0f)
{
	entity_id = 0;
	entity_flags = flags;
	entity_moduletypeid = 0;
	
	entity_radius = 1.0f;
	entity_direction = 0;
	entity_shape = Diamond;
	
	add(this);
}

Entity::~Entity()
{
}

void Entity::frame(float seconds)
{
}

/* ---- EntityDynamic ---------------------------------------------- */

EntityDynamic::EntityDynamic(unsigned int flags) :
	Entity(flags)
{
	entity_speed = 0.0f;
}

EntityDynamic::~EntityDynamic()
{
}

void EntityDynamic::frame(float seconds)
{
	// location avoid sin/cos calculations
	entity_location.x += cosf(entity_direction * M_PI / 180) * entity_speed * seconds;
	entity_location.z -= sinf(entity_direction * M_PI / 180) * entity_speed * seconds;
}

/*----- EntityControlable ------------------------------------------ */

EntityControlable::EntityControlable(Player *player, unsigned int flags) :
	EntityDynamic(flags)
{
	entity_owner = 0;
	entity_thrust = 0;

	target_direction = 0.0f;
	target_thrust = 0.0f;
}

EntityControlable::~EntityControlable()
{
}

void EntityControlable::frame(float seconds)
{
	entity_direction = target_direction;
	entity_thrust = target_thrust;

	EntityDynamic::frame(seconds);
}

void EntityControlable::set_thrust(float thrust)
{
	target_thrust = thrust;
}

void EntityControlable::set_direction(float direction)
{
	target_direction = direction;
}

}