/// <summary>
/// Deep copy all of the Particle properties
/// </summary>
/// <param name="ParticleToCopy">The Particle to Copy the properties from</param>
public override void CopyFrom(DPSFParticle ParticleToCopy)
{
// Cast the Particle to the type it really is
DefaultSpriteParticle cParticleToCopy = (DefaultSpriteParticle)ParticleToCopy;
base.CopyFrom(cParticleToCopy);
this.Rotation = cParticleToCopy.Rotation;
this.Width = cParticleToCopy.Width;
this.Height = cParticleToCopy.Height;
this.FlipMode = cParticleToCopy.FlipMode;
this.RotationalVelocity = cParticleToCopy.RotationalVelocity;
this.RotationalAcceleration = cParticleToCopy.RotationalAcceleration;
this.StartWidth = cParticleToCopy.StartWidth;
this.StartHeight = cParticleToCopy.StartHeight;
this.EndWidth = cParticleToCopy.EndWidth;
this.EndHeight = cParticleToCopy.EndHeight;
}
//===========================================================
// Initialization Function
//===========================================================
/// <summary>
/// Function to Initialize a Default Particle with default Properties
/// </summary>
/// <param name="Particle">The Particle to be Initialized</param>
public override void InitializeParticleUsingInitialProperties(DPSFParticle Particle)
{
// Cast the Particle to the type it really is
DefaultSpriteParticle cParticle = (DefaultSpriteParticle)Particle;
// Initialize the Particle according to the values specified in the Initial Settings
base.InitializeParticleUsingInitialProperties(cParticle, mcInitialProperties);
// Calculate the Particle's Rotation values
cParticle.Rotation = DPSFHelper.RandomNumberBetween(mcInitialProperties.RotationMin, mcInitialProperties.RotationMax);
cParticle.RotationalVelocity = DPSFHelper.RandomNumberBetween(mcInitialProperties.RotationalVelocityMin, mcInitialProperties.RotationalVelocityMax);
cParticle.RotationalAcceleration = DPSFHelper.RandomNumberBetween(mcInitialProperties.RotationalAccelerationMin, mcInitialProperties.RotationalAccelerationMax);
// Calculate the Particle's Width and Height values
cParticle.StartWidth = DPSFHelper.RandomNumberBetween(mcInitialProperties.StartSizeMin > 0 ? mcInitialProperties.StartSizeMin : mcInitialProperties.StartWidthMin, mcInitialProperties.StartSizeMax > 0 ? mcInitialProperties.StartSizeMax : mcInitialProperties.StartWidthMax);
cParticle.EndWidth = DPSFHelper.RandomNumberBetween(mcInitialProperties.EndSizeMin > 0 ? mcInitialProperties.EndSizeMin : mcInitialProperties.EndWidthMin, mcInitialProperties.EndSizeMax > 0 ? mcInitialProperties.EndSizeMax : mcInitialProperties.EndWidthMax);
cParticle.StartHeight = DPSFHelper.RandomNumberBetween(mcInitialProperties.StartSizeMin > 0 ? mcInitialProperties.StartSizeMin : mcInitialProperties.StartHeightMin, mcInitialProperties.StartSizeMax > 0 ? mcInitialProperties.StartSizeMax : mcInitialProperties.StartHeightMax);
cParticle.EndHeight = DPSFHelper.RandomNumberBetween(mcInitialProperties.EndSizeMin > 0 ? mcInitialProperties.EndSizeMin : mcInitialProperties.EndHeightMin, mcInitialProperties.EndSizeMax > 0 ? mcInitialProperties.EndSizeMax : mcInitialProperties.EndHeightMax);
cParticle.Width = cParticle.StartWidth;
cParticle.Height = cParticle.StartHeight;
}
//===========================================================
// Draw Sprite and Overridden Particle System Functions
//===========================================================
/// <summary>
/// Function to draw a Sprite Particle. This function should be used to draw the given
/// Particle with the provided SpriteBatch.
/// </summary>
/// <param name="Particle">The Particle Sprite to Draw</param>
/// <param name="cSpriteBatch">The SpriteBatch to use to doing the Drawing</param>
protected override void DrawSprite(DPSFParticle Particle, SpriteBatch cSpriteBatch)
{
// Cast the Particle to the type it really is
DefaultSpriteParticle cParticle = (DefaultSpriteParticle)Particle;
// Get the Position and Dimensions of the Particle in 2D space
Rectangle sDestination = new Rectangle((int)cParticle.Position.X, (int)cParticle.Position.Y,
(int)cParticle.Width, (int)cParticle.Height);
// Get the Depth (Z-Buffer value) of the Particle clamped in the range 0.0 - 1.0 (0.0 = front, 1.0 = back)
float fNormalizedDepth = MathHelper.Clamp(cParticle.Position.Z, 0.0f, 1.0f);
// Get the Position and Dimensions from the Texture to use for this Sprite
Rectangle sSourceFromTexture = new Rectangle(0, 0, Texture.Width, Texture.Height);
// Make the Sprite rotate about its center
Vector2 sOrigin = new Vector2(sSourceFromTexture.Width / 2, sSourceFromTexture.Height / 2);
// Draw the Sprite
cSpriteBatch.Draw(Texture, sDestination, sSourceFromTexture, cParticle.Color, cParticle.Rotation, sOrigin, cParticle.FlipMode, fNormalizedDepth);
}
/// <summary>
/// Linearly interpolate the Particle's Position.Z value from 0.0 (front) to
/// 1.0 (back) according to the Particle's Normalized Lifetime
/// </summary>
/// <param name="cParticle">The Particle to update</param>
/// <param name="fElapsedTimeInSeconds">How long it has been since the last update</param>
protected void UpdateParticleDepthFromFrontToBackUsingLerp(DefaultSpriteParticle cParticle, float fElapsedTimeInSeconds)
{
// Update the Particle's Depth Position
cParticle.Position.Z = (cParticle.NormalizedElapsedTime);
}
/// <summary>
/// Linearly interpolate the Particle's Width and Height between the Start and End values according
/// to the Particle's Normalized Lifetime
/// </summary>
/// <param name="cParticle">The Particle to update</param>
/// <param name="fElapsedTimeInSeconds">How long it has been since the last update</param>
protected void UpdateParticleWidthAndHeightUsingLerp(DefaultSpriteParticle cParticle, float fElapsedTimeInSeconds)
{
// Calculate the Particle's new Width and Height
cParticle.Width = MathHelper.Lerp(cParticle.StartWidth, cParticle.EndWidth, cParticle.NormalizedElapsedTime);
cParticle.Height = MathHelper.Lerp(cParticle.StartHeight, cParticle.EndHeight, cParticle.NormalizedElapsedTime);
}
/// <summary>
/// Update a Particle's Rotation and Rotational Velocity according to its Rotational Acceleration
/// </summary>
/// <param name="cParticle">The Particle to update</param>
/// <param name="fElapsedTimeInSeconds">How long it has been since the last update</param>
protected void UpdateParticleRotationAndRotationalVelocityUsingRotationalAcceleration(DefaultSpriteParticle cParticle, float fElapsedTimeInSeconds)
{
// Update the Particle's Rotational Velocity and Rotation according to its Rotational Acceleration
cParticle.RotationalVelocity += cParticle.RotationalAcceleration * fElapsedTimeInSeconds;
cParticle.Rotation += cParticle.RotationalVelocity * fElapsedTimeInSeconds;
}
//===========================================================
// Particle Update Functions
//===========================================================
/// <summary>
/// Update a Particle's Rotation according to its Rotational Velocity
/// </summary>
/// <param name="cParticle">The Particle to update</param>
/// <param name="fElapsedTimeInSeconds">How long it has been since the last update</param>
protected void UpdateParticleRotationUsingRotationalVelocity(DefaultSpriteParticle cParticle, float fElapsedTimeInSeconds)
{
// Update the Particle's Rotation according to its Rotational Velocity
cParticle.Rotation += cParticle.RotationalVelocity * fElapsedTimeInSeconds;
}