public void Update(float elapsed)
{
if (_isPaused == false)
{
float lerpLife = currentLife / maxLife;
// update the particles with the emitter properties
for (int i = 0; i < particleTypes.Count; i++)
{
if (particleTypes[i].Parent != this)
{
particleTypes[i].Parent = this;
}
float _emissionAngle = Particle.GetLerpValue(emissionAngle.Values, lerpLife);
float _emissionRange = Particle.GetLerpValue(emissionRange.Values, lerpLife);
float _opacityModifier = Particle.GetLerpValue(globalOpacityModifier.Values, lerpLife);
particleTypes[i].Update(elapsed, lerpLife, shape, _opacityModifier, _emissionAngle, _emissionRange);
}
currentLife += 1.0f;
if (currentLife > maxLife)
{
// reset the life
currentLife = 0.0f;
// increment the loop counter
_loopCounter++;
// check if we need to stop
if (_parent.LoopMax > 0 && _loopCounter >= _parent.LoopMax)
{
_isStopped = true;
for (int i = 0; i < particleTypes.Count; i++)
{
particleTypes[i].OnEmissionFinished();
}
}
}
}
}
/// <summary>
/// Get the linear interpolation value with an added random variation
/// </summary>
/// <param name="values">The key values</param>
/// <param name="variations">The key variation values</param>
/// <param name="lerpLife">The life, between 0 and 1</param>
/// <returns></returns>
public static float GetLerpValueWithVariation(List <Vector2> values, List <Vector2> variations, float lerpLife)
{
return(GetLerpValue(values, lerpLife) + Particle.GetRandomVariationValue(Particle.GetLerpValue(variations, lerpLife)));
}
