public void Update()
{
var dt = (Type.UseActualDeltaTime ? Engine.RawDeltaTime : Engine.DeltaTime);
var ease = Life / StartLife;
//Life
Life -= dt;
if (Life <= 0)
{
Active = false;
return;
}
//Color switch
if (Type.ColorMode == ParticleType.ColorModes.Fade)
{
Color = Color.Lerp(Type.Color2, Type.Color, ease);
}
else if (Type.ColorMode == ParticleType.ColorModes.Blink)
{
Color = Calc.BetweenInterval(Life, .1f) ? Type.Color : Type.Color2;
}
//Speed
Position += Speed * dt;
Speed += Type.Acceleration * dt;
Speed = Calc.Approach(Speed, Vector2.Zero, Type.Friction * dt);
if (Type.SpeedMultiplier != 1)
{
Speed *= (float)Math.Pow(Type.SpeedMultiplier, dt);
}
//Scale Out
if (Type.ScaleOut)
{
Size = StartSize * Ease.CubeOut(ease);
}
}
public void Update(float?delta = null)
{
var dt = 0f;
if (delta.HasValue)
{
dt = delta.Value;
}
else
{
dt = (Type.UseActualDeltaTime ? Engine.RawDeltaTime : Engine.DeltaTime);
}
var ease = Life / StartLife;
//Life
Life -= dt;
if (Life <= 0)
{
Active = false;
return;
}
//Spin
if (Type.RotationMode == ParticleType.RotationModes.SameAsDirection)
{
if (Speed != Vector2.Zero)
{
Rotation = Speed.Angle();
}
}
else
{
Rotation += Spin * dt;
}
//Fade
float alpha;
if (Type.FadeMode == ParticleType.FadeModes.Linear)
{
alpha = ease;
}
else if (Type.FadeMode == ParticleType.FadeModes.Late)
{
alpha = Math.Min(1f, ease / .25f);
}
else if (Type.FadeMode == ParticleType.FadeModes.InAndOut)
{
if (ease > .75f)
{
alpha = 1 - ((ease - .75f) / .25f);
}
else if (ease < .25f)
{
alpha = ease / .25f;
}
else
{
alpha = 1f;
}
}
else
{
alpha = 1f;
}
//Color switch with alpha
if (alpha == 0)
{
Color = Color.Transparent;
}
else
{
if (Type.ColorMode == ParticleType.ColorModes.Static)
{
Color = StartColor;
}
else if (Type.ColorMode == ParticleType.ColorModes.Fade)
{
Color = Color.Lerp(Type.Color2, StartColor, ease);
}
else if (Type.ColorMode == ParticleType.ColorModes.Blink)
{
Color = (Calc.BetweenInterval(Life, .1f) ? StartColor : Type.Color2);
}
else if (Type.ColorMode == ParticleType.ColorModes.Choose)
{
Color = StartColor;
}
if (alpha < 1f)
{
Color *= alpha;
}
}
//Speed
Position += Speed * dt;
Speed += Type.Acceleration * dt;
Speed = Calc.Approach(Speed, Vector2.Zero, Type.Friction * dt);
if (Type.SpeedMultiplier != 1)
{
Speed *= (float)Math.Pow(Type.SpeedMultiplier, dt);
}
//Scale Out
if (Type.ScaleOut)
{
Size = StartSize * Ease.CubeOut(ease);
}
}