/****************************************************************************
 * Copyright (C) 2009      Daniel Chappuis                                  *
 ****************************************************************************
 * This file is part of ReactPhysics3D.                                     *
 *                                                                          *
 * ReactPhysics3D 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 3 of the License, or        *
 * (at your option) any later version.                                      *
 *                                                                          *
 * ReactPhysics3D 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 ReactPhysics3D. If not, see <http://www.gnu.org/licenses/>.   *
 ***************************************************************************/

// Libraries
#include "Context.h"
#include "../reactphysics3d/reactphysics3d.h"
#include <iostream>
#include <vector>

// We want to use the ReactPhysics3D namespace
using namespace reactphysics3d;

// Constructor of the class Context
Context::Context() {

    // We add some objects in the context at the beginning ---> THESE THINGS WILL BE STORE IN A TEXT FILE
    Cube* cube1 = new Cube(Vector3D(-2.0, 3, -6.0), 2.0, 10.0);
    Cube* cube2 = new Cube(Vector3D(0.0, 3, 6.0), 3.0, 5.0);
    Cube* cube3 = new Cube(Vector3D(4.0, 3.0, -2.0), 2.0, 0.01);
    Plane* plane1 = new Plane(Vector3D(0.0, 0.0, 0.0), 20.0, 30.0, Vector3D(-1.0, 0.0, 0.0), Vector3D(0.0, 0.0, 1.0), 10.0);

    addObject(cube1);
    addObject(cube2);
    addObject(cube3);
    addObject(plane1);
}


// Destructor of the class Context
Context::~Context() {
    // Delete all the objects in vectObjects
    for(unsigned int i=0; i<vectObjects.size(); ++i) {
        delete vectObjects[i];
    }
}

// Method to get an object from the context
Object& Context::getObject(int objectIndex) const {
    // TODO : WE HAVE TO ADD HERE AN EXCEPTION IMPLEMENTATION

    // Return the object from the context
    return (*vectObjects.at(objectIndex));     // TODO : THROWN AN EXCEPTION IF INDEX IS OUT OF THE BOUNDS
}

// Method for adding an object into the context
void Context::addObject(Object* object) {
    if (object != NULL) {
        // Add the object into the context
        vectObjects.push_back(object);
    }
}

// Method to remove an object from the context
void Context::removeObject(int objectIndex) {
    // WE HAVE TO ADD HERE AN EXCEPTION IMPLEMENTATION

    // Restore the memory of the element
    delete vectObjects[objectIndex];

    // Erase the element in the vector
    vectObjects.erase(vectObjects.begin()+objectIndex);
}