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

#include "sys/sys.h"
#include "model/collisionmesh.h"

namespace model {

CollisionMesh::Registry	CollisionMesh::collisionmesh_registry;
bool CollisionMesh::collisionmesh_initialized = false;

void CollisionMesh::init()
{
	clear();
	collisionmesh_initialized = true;
}

void CollisionMesh::shutdown()
{
	clear();
	collisionmesh_initialized = false;
}

void CollisionMesh::add(CollisionMesh *collisionmesh)
{
	collisionmesh_registry[collisionmesh->name()] = collisionmesh;	
}

void CollisionMesh::clear()
{
	con_debug << "  clearing collision meshes" << std::endl;

	for (Registry::iterator i = collisionmesh_registry.begin(); i != collisionmesh_registry.end(); ++i) {
		delete (*i).second;
		(*i).second = 0;
	}

	collisionmesh_registry.clear();
}

CollisionMesh *CollisionMesh::find(const std::string &name)
{
	for (Registry::iterator i = collisionmesh_registry.begin(); i != collisionmesh_registry.end(); ++i) {
		if ((*i).first.compare(name) == 0)
			return (*i).second;
	}
	
	return 0;
}

CollisionMesh::CollisionMesh(const std::string &name) :
	collisionmesh_name(name)
{
	collisionmesh_size = 0;
	// btTriangleMesh (bool use32bitIndices=true, bool use4componentVertices=true)
	collisionmesh_triangles = new btTriangleMesh(true, false);
}

CollisionMesh::~CollisionMesh()
{
	delete collisionmesh_triangles;
}

void CollisionMesh::add_triangle(const math::Vector3f & v0, const math::Vector3f & v1, const math::Vector3f & v2)
{
	collisionmesh_triangles->addTriangle(
		to_btVector3(v0),
		to_btVector3(v1),
		to_btVector3(v2),
		true
	);
	collisionmesh_size += 1;
}

} // namespace model