/// <summary>
/// Apply a force to the body without increasing it's velocity above a specific limit.
/// </summary>
public void ApplyForce(Vector2 force, float maxVelocity)
{
if (!IsValidValue(maxVelocity, "max velocity"))
{
return;
}
Vector2 velocityAddition = force / Mass * (float)Timing.Step;
Vector2 newVelocity = FarseerBody.LinearVelocity + velocityAddition;
float newSpeedSqr = newVelocity.LengthSquared();
if (newSpeedSqr > maxVelocity * maxVelocity && Vector2.Dot(FarseerBody.LinearVelocity, force) > 0.0f)
{
float newSpeed = (float)Math.Sqrt(newSpeedSqr);
float maxVelAddition = maxVelocity - newSpeed;
if (maxVelAddition <= 0.0f)
{
return;
}
force = velocityAddition.ClampLength(maxVelAddition) * Mass / (float)Timing.Step;
}
if (!IsValidValue(force, "clamped force", -1e10f, 1e10f))
{
return;
}
FarseerBody.ApplyForce(force);
}
public void ApplyForce(Vector2 force)
{
if (!IsValidValue(force, "force", -1e10f, 1e10f))
{
return;
}
FarseerBody.ApplyForce(force);
}
public void ApplyForce(Vector2 force, Vector2 point)
{
if (!IsValidValue(force, "force", -1e10f, 1e10f))
{
return;
}
if (!IsValidValue(point, "point"))
{
return;
}
FarseerBody.ApplyForce(force, point);
}