public virtual void Update(GameTime gameTime)
{
this.AnimationFrame = this.AnimationMode switch
{
AnimationMode.None => this.AnimationFrame,
AnimationMode.Loop => ((int)Math.Floor(gameTime.TotalGameTime / this.AnimationFrameLength)) % this.textures.Length,
AnimationMode.PingPong => PingPong(((int)Math.Floor(gameTime.TotalGameTime / this.AnimationFrameLength)) % (this.textures.Length + this.textures.Length - 2), this.textures.Length),
_ => throw new NotImplementedException($"AnimationMode {this.AnimationMode}")
};
if (this.AttachedTo == null)
{
this.Position += this.Velocity * (float)gameTime.ElapsedGameTime.TotalSeconds;
if (Velocity.Length() != 0.0f)
{
this.Velocity *= 0.95f;
if (Velocity.Length() < 0.1f)
{
Velocity = new Vector2(0.0f);
}
}
}
else
{
Vector2 offset = MyMathHelper.RotateBy(this.AttachOffset, this.AttachedTo.Rotation);
this.Position = this.AttachedTo.Position + offset;
this.Rotation = this.AttachedTo.Rotation;
}
}
public void Update(GameTime gameTime)
{
if (this.AttachedTo != null)
{
Vector2 offset = MyMathHelper.RotateBy(this.AttachOffset, this.AttachedTo.Rotation);
this.Position = this.AttachedTo.Position + offset;
}
if (this.IsEnabled)
{
this.spawnBackpack += gameTime.ElapsedGameTime;
while (this.spawnBackpack >= this.SpawnRate)
{
this.spawnBackpack -= this.SpawnRate;
this.Spawn(gameTime);
}
}
for (int i = 0; i < this.MaxParticles; i++)
{
this.positions[i] += this.velocetys[i];
if (this.actives[i])
{
var age = gameTime.TotalGameTime - this.createionTime[i];
var deathBegin = this.MaxAge - this.DeathDuration;
if (age >= this.MaxAge)
{
this.actives[i] = false;
this.active--;
}
else if (age > deathBegin)
{
var deathPosition = (age - deathBegin) / this.DeathDuration;
System.Diagnostics.Debug.Assert(deathPosition <= 1 && deathPosition >= 0);
if (this.Death.HasFlag(PatricleDeath.Fade))
{
this.fade[i] = 1f - (float)deathPosition;
}
if (this.Death.HasFlag(PatricleDeath.Shrink))
{
this.scale[i] = Vector2.One * (1f - (float)deathPosition);
}
else if (this.Death.HasFlag(PatricleDeath.Grow))
{
this.scale[i] = Vector2.One + Vector2.One * 2f * ((float)deathPosition);
}
}
}
}
}