now draws a ball, fixed top of states bug

[physics.git] / src / entityManager.cpp

#include <set>
using std::set;

#include <iostream>

#include "entityManager.h"
#include "debug.h"

#include "Entities/Entity.h"
#include "Entities/Particle.h"
#include "Entities/PhysicsEntity.h"

/// ***** Private Method Headers *****
void updateParticles(float);
void updatePhysics(float);

/// ***** Private Variables *****
typedef set<Particle*> setPart;
setPart particles_To_Add;
setPart active_Particles;
setPart particles_To_Remove;
bool clearParticles;

typedef set<PhysicsEntity*> setPhys;
setPhys physics_To_Add;
setPhys active_Physics;
setPhys physics_To_Remove;
bool clearPhysics;

/// ***** Public Methods *****

void manager::init()
{
}
void manager::clean()
{
}

void manager::add(Entity* e)
{
    {
        Particle* p = dynamic_cast<Particle*>(e);
        if( p != 0 )
        {
            particles_To_Add.insert(p);
            return;
        }
    }

    {
        PhysicsEntity* p = dynamic_cast<PhysicsEntity*>(e);
        if( p != 0 )
        {
            physics_To_Add.insert(p);
            return;
        }
    }

    std::cerr << "ENTITY TYPE NOT SUPPORTED BY addEntity()!!";
    std::cerr << std::endl;
}
void manager::remove(Entity* e)
{
    {
        Particle* p = dynamic_cast<Particle*>(e);
        if( p != 0 )
        {
            particles_To_Remove.insert(p);
            return;
        }
    }

    {
        PhysicsEntity* p = dynamic_cast<PhysicsEntity*>(e);
        if( p != 0 )
        {
            physics_To_Remove.insert(p);
            return;
        }
    }

    std::cerr << "ENTITY TYPE NOT SUPPORTED BY deleteEntity()!!";
    std::cerr << std::endl;
}

void manager::clear()
{
    clearParticles = true;
    clearPhysics = true;
}

void manager::handleInput()
{
    // TODO
}
void manager::update(float time_step)
{
    updateParticles(time_step);
    updatePhysics(time_step);
}
void manager::draw()
{
    // update active Particle*s
    for( setPart::iterator it = active_Particles.begin();
         it != active_Particles.end();
         it++ )
    {
        (*it)->draw();
    }

    // update active PhysicsEntity*s
    for( setPhys::iterator it = active_Physics.begin();
         it != active_Physics.end();
         it++ )
    {
        (*it)->draw();
    }

}

/// ***** Private Methods *****
void updateParticles(float time_step)
{
    // add new Particle*s to Active
    for( setPart::iterator it = particles_To_Add.begin();
         it != particles_To_Add.end();
         it++ )
    {
        active_Particles.insert(*it);
    }
    particles_To_Add.clear();

    // remove dead Particle*s from Active
    for( setPart::iterator it = particles_To_Remove.begin();
         it != particles_To_Remove.end();
         it++ )
    {
        active_Particles.erase(*it);
    }
    particles_To_Remove.clear();

    // update active Particle*s
    for( setPart::iterator it = active_Particles.begin();
         it != active_Particles.end();
         it++ )
    {
        (*it)->update(time_step);
    }
}
void updatePhysics(float time_step)
{
    // add new PhysicsEntity*s to Active
    for( setPhys::iterator it = physics_To_Add.begin();
         it != physics_To_Add.end();
         it++ )
    {
        active_Physics.insert(*it);
    }
    physics_To_Add.clear();

    // remove dead PhysicsEntity*s from Active
    for( setPhys::iterator it = physics_To_Remove.begin();
         it != physics_To_Remove.end();
         it++ )
    {
        active_Physics.erase(*it);
    }
    physics_To_Remove.clear();

    // update active PhysicsEntity*s
    for( setPhys::iterator it = active_Physics.begin();
         it != active_Physics.end();
         it++ )
    {
        (*it)->update(time_step);
    }
}