change Vector2 param to a const Vector2&

[physics.git] / src / Entities / Particle.cpp

#include "Particle.h"
#include "../Vector2.h"

/// ***** Public Class Methods *****
Particle::Particle(const Vector2& pos, bool canDie)
    : Entity(pos), canDie(canDie)
{

}
Particle::Particle(const Vector2& pos, float lifeTime)
    : Entity(pos), lifeTime(lifeTime)
{

}
Particle::~Particle()
{

}

void Particle::update(float time_step)
{
    if(isDead)
        return;

    if (canDie)
    {
        lifeTime -= time_step;
        isDead = lifeTime <= 0;
    }
    position += velocity * time_step;
}