/// <summary>
/// Updates the Physics of the entity.
/// </summary>
/// <param name="gameTime"></param>
public override void Update(GameTime gameTime)
{
//ITEM: c) Implementou corretamente o cálculo de deslocamento da bala, levando em conta a inércia e fazendo uso de vetores;
Vector2 forces = Vector2.Zero;
Vector2 instantForces = Vector2.Zero;
float secs = (float)gameTime.ElapsedGameTime.TotalSeconds;
#region Calculate Forces
//Constant forces
foreach (Vector2 force in ConstantForces.Values)
{
forces += force;
}
//Forces applied once
while (Forces.Count > 0)
{
instantForces += (Forces.Pop() / Mass); //Since it will be applied only once, must do a BIG BOOM.
}
#endregion Calculate Forces
Vector2 acceleration = (forces / Mass) + Gravity;
Vector2 accelSecs = acceleration * secs;
Entity.Position += GlobalForces.MetersToPixels((Momentum + accelSecs / 2) * secs);
Momentum += (accelSecs + instantForces);
Momentum *= (Vector2.One - Friction);
if (Rotate)
{
Entity.Rotation = Momentum.GetAngle();
}
}
