/// <summary>
/// Example of how to create a Particle Initialization Function
/// </summary>
/// <param name="cParticle">The Particle to be Initialized</param>
public void InitializeParticleProperties(DefaultTexturedQuadParticle cParticle)
{
//-----------------------------------------------------------
// TODO: Initialize all of the Particle's properties here.
// If you plan on simply using the default InitializeParticleUsingInitialProperties
// Particle Initialization Function (see the LoadParticleSystem() function above),
// then you may delete this function all together.
//-----------------------------------------------------------
// Set the Particle's Lifetime (how long it should exist for)
cParticle.Lifetime = 2.0f;
// Set the Particle's initial Position to be wherever the Emitter is
cParticle.Position = Emitter.PositionData.Position;
// Set the Particle's Velocity
Vector3 sVelocityMin = new Vector3(-50, 50, -50);
Vector3 sVelocityMax = new Vector3(50, 100, 50);
cParticle.Velocity = DPSFHelper.RandomVectorBetweenTwoVectors(sVelocityMin, sVelocityMax);
// Adjust the Particle's Velocity direction according to the Emitter's Orientation
cParticle.Velocity = Vector3.Transform(cParticle.Velocity, Emitter.OrientationData.Orientation);
// Give the Particle a random Size
// Since we have Size Lerp enabled we must also set the Start and End Size
cParticle.Width = cParticle.StartWidth = cParticle.EndWidth =
cParticle.Height = cParticle.StartHeight = cParticle.EndHeight = RandomNumber.Next(10, 50);
// Give the Particle a random Color
// Since we have Color Lerp enabled we must also set the Start and End Color
cParticle.Color = cParticle.StartColor = cParticle.EndColor = DPSFHelper.RandomColor();
}
//===========================================================
// Particle Update Functions
//===========================================================
//-----------------------------------------------------------
// TODO: Place your Particle Update functions here, using the
// same function prototype as below (i.e. public void FunctionName(DPSFParticle, float))
//-----------------------------------------------------------
/// <summary>
/// Example of how to create a Particle Event Function
/// </summary>
/// <param name="cParticle">The Particle to update</param>
/// <param name="fElapsedTimeInSeconds">How long it has been since the last update</param>
protected void UpdateParticleFunctionExample(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
// Place code to update the Particle here
// Example: cParticle.Position += cParticle.Velocity * fElapsedTimeInSeconds;
//cParticle.Position += cParticle.Velocity * fElapsedTimeInSeconds;
// Effects expect a premultiplied color, so get the actual color to use.
}
public void SwipeParticle(DefaultTexturedQuadParticle particle, float elapsedTimeInSecconds)
{
if (!this.swipedParticles.Contains(particle))
{
this.swipedParticles.Add(particle);
particle.Velocity = particle.Velocity + new Vector3((particle.ElapsedTime * 1.5f / particle.Lifetime) * 5 * this.LastSwipeDeltaX, 0, 0);
}
}
//===========================================================
// Particle Update Functions
//===========================================================
protected void UpdateParticleDieOnceGroundIsHit(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
// If the Particle hits the ground
if (cParticle.Position.Y < -5)
{
// Kill it
cParticle.Lifetime = 1.0f;
}
}
protected void UpdateParticleChangeVelocityAndRotation(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
if (RandomNumber.Next(0, 100) == 50)
{
Vector3 sChange = new Vector3(RandomNumber.Next(-3, 3), RandomNumber.Next(-3, 3), RandomNumber.Next(-3, 3));
cParticle.Velocity += sChange;
cParticle.RotationalVelocity.Z += RandomNumber.Between(-MathHelper.PiOver4, MathHelper.PiOver4);
}
}
public void InitializeParticleProperties(DefaultTexturedQuadParticle cParticle)
{
cParticle.Lifetime = 2.0f;
cParticle.Position = Emitter.PositionData.Position;
Vector3 sVelocityMin = new Vector3(-50, 50, -50);
Vector3 sVelocityMax = new Vector3(50, 100, 50);
cParticle.Velocity = DPSFHelper.RandomVectorBetweenTwoVectors(sVelocityMin, sVelocityMax);
cParticle.Velocity = Vector3.Transform(cParticle.Velocity, Emitter.OrientationData.Orientation);
cParticle.Width = cParticle.StartWidth = cParticle.EndWidth =
cParticle.Height = cParticle.StartHeight = cParticle.EndHeight = RandomNumber.Next(10, 50);
cParticle.Color = cParticle.StartColor = cParticle.EndColor = DPSFHelper.RandomColor();
}
/// <summary>
/// Initialize the properties of a particle.
/// </summary>
/// <param name="particle">Reference to the particle to be initialized.</param>
public void InitializeParticleProperties(DefaultTexturedQuadParticle particle)
{
// Set the Particle's Lifetime (how long it should exist for) and initial Position
particle.Lifetime = 5;
particle.Position = Emitter.PositionData.Position;
// Give the Particle a random velocity direction to start with
particle.Velocity = DPSFHelper.RandomNormalizedVector() * 0.5f;
particle.Size = 0.2f;
particle.Color = Color.Red;
}
protected void AttractParticleToExternalObject(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
// Calculate Direction towards the Object and how far the Particle is from the Object
Vector3 sDirectionTowardsObject = mcExternalObjectPosition - cParticle.Position;
float fDistance = sDirectionTowardsObject.Length();
// If the Particle is close enough to the Object to be affected by it
if (fDistance < mfAttractRepelRange)
{
// Attract the Particle to the Object
sDirectionTowardsObject.Normalize();
cParticle.Velocity = sDirectionTowardsObject * (mfAttractRepelRange - fDistance) * mfAttractRepelForce;
}
}
// Used to generate smoke coming off the ring of fire
public void InitializeSmokeRingParticle(DefaultTexturedQuadParticle cParticle)
{
cParticle.Lifetime = RandomNumber.Between(1.0f, 5.0f);
cParticle.Position = new Vector3(0, 10, 0);
cParticle.StartSize = RandomNumber.Next(10, 40);
cParticle.EndSize = RandomNumber.Next(20, 60);
cParticle.Size = cParticle.StartSize;
cParticle.Color = Color.AliceBlue;
cParticle.Orientation = Orientation3D.Rotate(Matrix.CreateRotationZ(RandomNumber.Between(0, MathHelper.TwoPi)), cParticle.Orientation);
cParticle.Velocity = new Vector3(RandomNumber.Next(0, 30), RandomNumber.Next(10, 30), RandomNumber.Next(-20, 10));
cParticle.Acceleration = Vector3.Zero;
cParticle.RotationalVelocity.Z = RandomNumber.Between(-MathHelper.Pi, MathHelper.Pi);
}
public void InitializeParticleTrail(DefaultTexturedQuadParticle cParticle)
{
cParticle.Lifetime = 4.0f;
cParticle.Position = Emitter.PositionData.Position;
cParticle.StartSize = cParticle.Size = TrailStartSize;
cParticle.EndSize = TrailEndSize;
cParticle.StartColor = cParticle.Color = TrailStartColor;
cParticle.EndColor = TrailEndColor;
cParticle.Velocity = Vector3.Zero;
cParticle.Acceleration = Vector3.Zero;
cParticle.Orientation = Emitter.OrientationData.Orientation;
cParticle.RotationalVelocity = new Vector3(0, 0, (float)Math.PI);
}
protected void RepelParticleFromExternalObject(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
// Calculate Direction away from the Object and how far the Particle is from the Object
Vector3 sDirectionAwayFromObject = cParticle.Position - mcExternalObjectPosition;
float fDistance = sDirectionAwayFromObject.Length();
// If the Particle is close enough to the Object to be affected by it
if (fDistance < mfAttractRepelRange)
{
// Repel the Particle from the Object
sDirectionAwayFromObject.Normalize();
cParticle.Velocity += sDirectionAwayFromObject * (mfAttractRepelRange - fDistance) * mfAttractRepelForce;
cParticle.RotationalVelocity.Z += 0.005f;
}
}
// Used to generate a single smoke plume
public void InitializeParticleRisingSmoke(DefaultTexturedQuadParticle cParticle)
{
cParticle.Lifetime = RandomNumber.Between(1.0f, 7.0f);
cParticle.Position = Emitter.PositionData.Position;
cParticle.Position += new Vector3(0, 10, 0);
cParticle.Size = RandomNumber.Next(10, 25);
cParticle.Color = msaColors[miCurrentColor];
cParticle.Orientation = DPSF.Orientation3D.Rotate(Matrix.CreateRotationZ(RandomNumber.Between(0, MathHelper.TwoPi)), cParticle.Orientation);
cParticle.Velocity = new Vector3(RandomNumber.Next(-15, 15), RandomNumber.Next(10, 30), RandomNumber.Next(-15, 15));
cParticle.Acceleration = Vector3.Zero;
cParticle.RotationalVelocity.Z = RandomNumber.Between(-MathHelper.Pi, MathHelper.Pi);
cParticle.StartSize = cParticle.Size;
mfColorBlendAmount = 0.5f;
}
// Used to generate random smoke particles around the floor
public void InitializeParticleFoggySmoke(DefaultTexturedQuadParticle cParticle)
{
cParticle.Lifetime = RandomNumber.Between(1.0f, 3.0f);
cParticle.Position = Emitter.PositionData.Position;
cParticle.Position += new Vector3(RandomNumber.Next(-500, 500), 0, RandomNumber.Next(-500, 500));
cParticle.Size = RandomNumber.Next(10, 25);
cParticle.Color = msaColors[miCurrentColor];
cParticle.Orientation = DPSF.Orientation3D.Rotate(Matrix.CreateRotationZ(RandomNumber.Between(0, MathHelper.TwoPi)), cParticle.Orientation);
cParticle.Velocity = new Vector3(RandomNumber.Next(-30, 30), RandomNumber.Next(0, 10), RandomNumber.Next(-30, 30));
cParticle.Acceleration = Vector3.Zero;
cParticle.RotationalVelocity.Z = RandomNumber.Between(-MathHelper.Pi, MathHelper.Pi);
cParticle.StartSize = cParticle.Size;
mfColorBlendAmount = 0.5f;
}
public void InitializeParticleSnow(DefaultTexturedQuadParticle cParticle)
{
// Position the Snow within 500 units of the emitter
Vector3 sPosition = Emitter.PositionData.Position;
sPosition.Y = 200;
sPosition.X += RandomNumber.Next(-500, 500);
sPosition.Z += RandomNumber.Next(-500, 500);
cParticle.Lifetime = 0.0f;
cParticle.Position = sPosition;
cParticle.Size = RandomNumber.Next(2, 5);
cParticle.Color = DPSFHelper.LerpColor(new Color(255, 255, 255, 50), new Color(255, 255, 255, 255), RandomNumber.NextFloat());
cParticle.Orientation = Orientation3D.Rotate(Matrix.CreateRotationZ(RandomNumber.Between(0, MathHelper.TwoPi)), cParticle.Orientation);
cParticle.Velocity = new Vector3(RandomNumber.Next(-10, 3), RandomNumber.Next(-15, -5), RandomNumber.Next(-10, 10));
cParticle.Acceleration = Vector3.Zero;
cParticle.RotationalVelocity.Z = RandomNumber.Between(-MathHelper.PiOver2, MathHelper.PiOver2);
}
public void InitializeParticleSnow(DefaultTexturedQuadParticle cParticle)
{
// Position the Snow within 500 units of the emitter
Vector3 sPosition = Emitter.PositionData.Position;
sPosition.Y = 200;
sPosition.X += RandomNumber.Next(-500, 500);
sPosition.Z += RandomNumber.Next(-500, 500);
cParticle.Lifetime = 0.0f;
cParticle.Position = sPosition;
cParticle.Size = RandomNumber.Next(2, 5);
cParticle.Color = DPSFHelper.LerpColor(new Color(255, 255, 255, 50), new Color(255, 255, 255, 255), RandomNumber.NextFloat());
cParticle.Orientation = Orientation3D.Rotate(Matrix.CreateRotationZ(RandomNumber.Between(0, MathHelper.TwoPi)), cParticle.Orientation);
cParticle.Velocity = new Vector3(RandomNumber.Next(-10, 3), RandomNumber.Next(-15, -5), RandomNumber.Next(-10, 10));
cParticle.Acceleration = Vector3.Zero;
cParticle.RotationalVelocity.Z = RandomNumber.Between(-MathHelper.PiOver2, MathHelper.PiOver2);
}
// Change the Particle's Rotational Velocity
public void UpdateParticleToUseRotationalVelocity(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
cParticle.RotationalVelocity.Z = RandomNumber.Between(-MathHelper.TwoPi, MathHelper.TwoPi);
}
protected void AttractParticleToExternalObject(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
// Calculate Direction towards the Object and how far the Particle is from the Object
Vector3 sDirectionTowardsObject = mcExternalObjectPosition - cParticle.Position;
float fDistance = sDirectionTowardsObject.Length();
// If the Particle is close enough to the Object to be affected by it
if (fDistance < mfAttractRepelRange)
{
// Attract the Particle to the Object
sDirectionTowardsObject.Normalize();
cParticle.Velocity = sDirectionTowardsObject * (mfAttractRepelRange - fDistance) * mfAttractRepelForce;
}
}
protected void UpdateColor(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
cParticle.Color = msaColors[miCurrentColor];
}
/// <summary>
/// Example of how to create a Particle Initialization Function
/// </summary>
/// <param name="cParticle">The Particle to be Initialized</param>
public void InitializeParticleProperties(DefaultTexturedQuadParticle cParticle)
{
//-----------------------------------------------------------
// TODO: Initialize all of the Particle's properties here.
// If you plan on simply using the default InitializeParticleUsingInitialProperties
// Particle Initialization Function (see the LoadParticleSystem() function above),
// then you may delete this function all together.
//-----------------------------------------------------------
// Set the Particle's Lifetime (how long it should exist for)
cParticle.Lifetime = 2.0f;
// Set the Particle's initial Position to be wherever the Emitter is
cParticle.Position = Emitter.PositionData.Position;
// Set the Particle's Velocity
Vector3 sVelocityMin = new Vector3(-50, 50, -50);
Vector3 sVelocityMax = new Vector3(50, 100, 50);
cParticle.Velocity = DPSFHelper.RandomVectorBetweenTwoVectors(sVelocityMin, sVelocityMax);
// Adjust the Particle's Velocity direction according to the Emitter's Orientation
cParticle.Velocity = Vector3.Transform(cParticle.Velocity, Emitter.OrientationData.Orientation);
// Give the Particle a random Size
// Since we have Size Lerp enabled we must also set the Start and End Size
cParticle.Width = cParticle.StartWidth = cParticle.EndWidth =
cParticle.Height = cParticle.StartHeight = cParticle.EndHeight = RandomNumber.Next(10, 50);
// Give the Particle a random Color
// Since we have Color Lerp enabled we must also set the Start and End Color
cParticle.Color = cParticle.StartColor = cParticle.EndColor = DPSFHelper.RandomColor();
}
//===========================================================
// Particle Update Functions
//===========================================================
//-----------------------------------------------------------
// TODO: Place your Particle Update functions here, using the
// same function prototype as below (i.e. public void FunctionName(DPSFParticle, float))
//-----------------------------------------------------------
/// <summary>
/// Example of how to create a Particle Event Function
/// </summary>
/// <param name="cParticle">The Particle to update</param>
/// <param name="fElapsedTimeInSeconds">How long it has been since the last update</param>
protected void UpdateParticleFunctionExample(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
// Place code to update the Particle here
// Example: cParticle.Position += cParticle.Velocity * fElapsedTimeInSeconds;
}
protected void UpdateParticleRemoveWindForce(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
cParticle.ExternalForce = Vector3.Zero;
}
/// <summary>
/// Another example of how to create a Particle Initialization Function
/// </summary>
/// <param name="cParticle">The Particle to be Initialized</param>
public void InitializeParticleProperties2(DefaultTexturedQuadParticle cParticle)
{
// Set the Particle's Lifetime (how long it should exist for)
cParticle.Lifetime = 1.0f;
// Set the Particle's initial Position to be wherever the Emitter is
cParticle.Position = Emitter.PositionData.Position;
// Set the Particle's Velocity
cParticle.Velocity = new Vector3(0, 200, 0);
// Adjust the Particle's Velocity direction according to the Emitter's Orientation
cParticle.Velocity = Vector3.Transform(cParticle.Velocity, Emitter.OrientationData.Orientation);
// If the Particles should be Increasing in Size
if (mbSizeIncreasing)
{
miCurrentSize++;
}
// Else they should be Decreasing in Size
else
{
miCurrentSize--;
}
// If the Particle Size is too small or too large, negate the size scaling
if (miCurrentSize <= 10 || miCurrentSize >= 60)
{
mbSizeIncreasing = !mbSizeIncreasing;
}
// Set the Particle's Size to our CurrentSize value
// Since we have Size Lerp enabled we must also set the Start and End Size
cParticle.Size = cParticle.StartSize = cParticle.EndSize = miCurrentSize;
// Give the Particle a random Color
// Since we have Color Lerp enabled we must also set the Start and End Color
cParticle.Color = cParticle.StartColor = cParticle.EndColor = DPSFHelper.RandomColor();
}
//===========================================================
// Particle Update Functions
//===========================================================
protected void UpdateParticleToFaceCenter(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
cParticle.Normal = Vector3.Lerp(InitialProperties.PositionMin, InitialProperties.PositionMax, 0.5f) - cParticle.Position;
}
public void InitializeParticleRotatingQuad(DefaultTexturedQuadParticle cParticle)
{
// Set the type of Rotation this Particle should do
switch (RandomNumber.Next(0, 5))
{
case 0:
InitialProperties.RotationalVelocityMin = new Vector3(MathHelper.PiOver4, 0, 0);
InitialProperties.RotationalVelocityMax = new Vector3(MathHelper.TwoPi, 0, 0);
break;
case 1:
InitialProperties.RotationalVelocityMin = new Vector3(0, MathHelper.PiOver4, 0);
InitialProperties.RotationalVelocityMax = new Vector3(0, MathHelper.TwoPi, 0);
break;
case 2:
InitialProperties.RotationalVelocityMin = new Vector3(0, 0, MathHelper.PiOver4);
InitialProperties.RotationalVelocityMax = new Vector3(0, 0, MathHelper.TwoPi);
break;
default:
case 3:
InitialProperties.RotationalVelocityMin = Vector3.Zero;
InitialProperties.RotationalVelocityMax = new Vector3(MathHelper.TwoPi, MathHelper.TwoPi, MathHelper.TwoPi);
InitialProperties.InterpolateBetweenMinAndMaxRotationalVelocity = false;
break;
}
InitializeParticleUsingInitialProperties(cParticle);
}
// Make the Particle InVisible
public void UpdateParticleVisibleOff(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
cParticle.Visible = false;
}
// Change the Particle Size
public void UpdateParticleSizeTo20(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
cParticle.Size = 20;
}
//===========================================================
// Particle Update Functions
//===========================================================
protected void IncreaseSizeBasedOnLifetime(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
cParticle.Size = ((1.0f + cParticle.NormalizedElapsedTime) / 1.0f) * cParticle.StartSize;
}
protected void UpdateColor(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
cParticle.Color = msaColors[miCurrentColor];
}
/// <summary>
/// Example of how to create a Particle Initialization Function
/// </summary>
/// <param name="cParticle">The Particle to be Initialized</param>
public void InitializeParticleProperties(DefaultTexturedQuadParticle cParticle)
{
//-----------------------------------------------------------
// TODO: Initialize all of the Particle's properties here.
// If you plan on simply using the default InitializeParticleUsingInitialProperties
// Particle Initialization Function (see the LoadParticleSystem() function above),
// then you may delete this function all together.
//-----------------------------------------------------------
cParticle.Lifetime = 1.0f;
int iTotalWidth = miNumberOfColumns * miSpaceBetweenParticles;
int iTotalHeight = miNumberOfRows * miSpaceBetweenParticles;
int iTotalDepth = miNumberOfLayers * miSpaceBetweenParticles;
// Get which Particle this is being added
int iParticleNumber = ActiveParticles.Count;
// Calculate where in the Grid this Particle should be
int iLayer = iParticleNumber / (miNumberOfRows * miNumberOfColumns);
int iRow = (iParticleNumber / miNumberOfColumns) % miNumberOfRows;
int iColumn = iParticleNumber % miNumberOfColumns;
// Calculate the Particles absolute position
Vector3 sPosition = new Vector3(iColumn * miSpaceBetweenParticles, iRow * miSpaceBetweenParticles, iLayer * miSpaceBetweenParticles);
// Center the Grid around the origin
sPosition.X -= (iTotalWidth / 2.0f);
sPosition.Y -= (iTotalHeight / 2.0f);
sPosition.Z -= (iTotalDepth / 2.0f);
// Set the Particle's initial Position
cParticle.Position = sPosition;
cParticle.Width = cParticle.Height = cParticle.StartWidth = cParticle.StartHeight = miStartSize;
cParticle.EndWidth = cParticle.EndHeight = miEndSize;
cParticle.Color = cParticle.StartColor = msStartColor;
cParticle.EndColor = msEndColor;
}
protected void UpdateParticleAddWindForce(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
cParticle.ExternalForce = Vector3.Lerp(Vector3.Zero, mcMaxWindForce, RandomNumber.Between(0.1f, 1.0f));
}
/// <summary>
/// Example of how to create a Particle Initialization Function
/// </summary>
/// <param name="cParticle">The Particle to be Initialized</param>
public void InitializeParticleProperties(DefaultTexturedQuadParticle cParticle)
{
// Set the Particle's Lifetime (how long it should exist for)
cParticle.Lifetime = 2.0f;
// Set the Particle's initial Position to be wherever the Emitter is
cParticle.Position = Emitter.PositionData.Position;
// Set the Particle's Velocity
Vector3 sVelocityMin = new Vector3(-50, 50, -50);
Vector3 sVelocityMax = new Vector3(50, 100, 50);
cParticle.Velocity = DPSFHelper.RandomVectorBetweenTwoVectors(sVelocityMin, sVelocityMax);
// Adjust the Particle's Velocity direction according to the Emitter's Orientation
cParticle.Velocity = Vector3.Transform(cParticle.Velocity, Emitter.OrientationData.Orientation);
// Give the Particle a random Size
// Since we have Size Lerp enabled we must also set the Start and End Size
cParticle.Size = cParticle.StartSize = cParticle.EndSize = RandomNumber.Next(10, 50);
// Give the Particle a random Color
// Since we have Color Lerp enabled we must also set the Start and End Color
cParticle.Color = cParticle.StartColor = cParticle.EndColor = DPSFHelper.RandomColor();
}
//===========================================================
// Structures and Variables
//===========================================================
//===========================================================
// Vertex Update and Overridden Particle System Functions
//===========================================================
/// <summary>
/// Function to update the Vertex properties according to the Particle properties
/// </summary>
/// <param name="sVertexBuffer">The array containing the Vertices to be drawn</param>
/// <param name="iIndex">The Index in the array where the Particle's Vertex info should be placed</param>
/// <param name="Particle">The Particle to copy the information from</param>
protected virtual void UpdateVertexProperties(ref DefaultTexturedQuadParticleVertex[] sVertexBuffer, int iIndex, DPSFParticle Particle)
{
// Cast the Particle to the type it really is
DefaultTexturedQuadParticle cParticle = (DefaultTexturedQuadParticle)Particle;
// Calculate what half of the Quads Width and Height are
float fHalfWidth = cParticle.Width / 2.0f;
float fHalfHeight = cParticle.Height / 2.0f;
// Calculate the Positions of the Quads corners around the origin
Vector3 sTopLeft = new Vector3(-fHalfWidth, -fHalfHeight, 0);
Vector3 sTopRight = new Vector3(fHalfWidth, -fHalfHeight, 0);
Vector3 sBottomLeft = new Vector3(-fHalfWidth, fHalfHeight, 0);
Vector3 sBottomRight = new Vector3(fHalfWidth, fHalfHeight, 0);
// Rotate the Quad corners around the origin according to its Orientation,
// then calculate their final Positions
sTopLeft = Vector3.Transform(sTopLeft, cParticle.Orientation) + cParticle.Position;
sTopRight = Vector3.Transform(sTopRight, cParticle.Orientation) + cParticle.Position;
sBottomLeft = Vector3.Transform(sBottomLeft, cParticle.Orientation) + cParticle.Position;
sBottomRight = Vector3.Transform(sBottomRight, cParticle.Orientation) + cParticle.Position;
// Copy this Particle's renderable Properties to the Vertex Buffer
// This is a Quad so we must copy all 4 Vertices over
sVertexBuffer[iIndex].Position = sBottomLeft;
sVertexBuffer[iIndex].TextureCoordinate = new Vector2(0, 1);
sVertexBuffer[iIndex].Color = cParticle.Color;
sVertexBuffer[iIndex + 1].Position = sTopLeft;
sVertexBuffer[iIndex + 1].TextureCoordinate = new Vector2(0, 0);
sVertexBuffer[iIndex + 1].Color = cParticle.Color;
sVertexBuffer[iIndex + 2].Position = sBottomRight;
sVertexBuffer[iIndex + 2].TextureCoordinate = new Vector2(1, 1);
sVertexBuffer[iIndex + 2].Color = cParticle.Color;
sVertexBuffer[iIndex + 3].Position = sTopRight;
sVertexBuffer[iIndex + 3].TextureCoordinate = new Vector2(1, 0);
sVertexBuffer[iIndex + 3].Color = cParticle.Color;
// Fill in the Index Buffer for the newly added Vertices.
// Specify the Vertices in Clockwise order.
// It takes 6 Indices to represent a quad (2 triangles = 6 corners).
// If we're using the HiDef profile, fill in the regular Index Buffer.
if (this.GraphicsDevice.GraphicsProfile == GraphicsProfile.HiDef)
{
IndexBuffer[IndexBufferIndex++] = iIndex + 1;
IndexBuffer[IndexBufferIndex++] = iIndex + 2;
IndexBuffer[IndexBufferIndex++] = iIndex;
IndexBuffer[IndexBufferIndex++] = iIndex + 1;
IndexBuffer[IndexBufferIndex++] = iIndex + 3;
IndexBuffer[IndexBufferIndex++] = iIndex + 2;
}
// Else we're using the Reach profile, so fill the Reach Index Buffer instead.
else
{
IndexBufferReach[IndexBufferIndex++] = (short)(iIndex + 1);
IndexBufferReach[IndexBufferIndex++] = (short)(iIndex + 2);
IndexBufferReach[IndexBufferIndex++] = (short)(iIndex);
IndexBufferReach[IndexBufferIndex++] = (short)(iIndex + 1);
IndexBufferReach[IndexBufferIndex++] = (short)(iIndex + 3);
IndexBufferReach[IndexBufferIndex++] = (short)(iIndex + 2);
}
}
//===========================================================
// Particle Update Functions
//===========================================================
/// <summary>
/// Example of how to create a Particle Event Function
/// </summary>
/// <param name="cParticle">The Particle to update</param>
/// <param name="fElapsedTimeInSeconds">How long it has been since the last update</param>
public void UpdateParticleFunctionExample(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
// Place code to update the Particle here
// Example: cParticle.Position += cParticle.Velocity * fElapsedTimeInSeconds;
}
private void UpdateParticleCleanupAtEndOfLifecycle(DefaultTexturedQuadParticle particle, float elapsedTimeInSeconds)
{
this.swipedParticles.Remove(particle);
}
public void StopDirtTrail(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
}
//===========================================================
// Particle Update Functions
//===========================================================
protected void IncreaseSizeBasedOnLifetime(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
cParticle.Size = ((1.0f + cParticle.NormalizedElapsedTime) / 1.0f) * cParticle.StartSize;
}
public void InitializeParticleFireOnHorizontalRing(DefaultTexturedQuadParticle cParticle)
{
Quaternion cBackup = Emitter.OrientationData.Orientation;
Emitter.OrientationData.Orientation = Quaternion.Identity;
InitializeParticleUsingInitialProperties(cParticle);
Emitter.OrientationData.Orientation = cBackup;
cParticle.Position = DPSFHelper.PointOnSphere(RandomNumber.Between(0, MathHelper.TwoPi), 0, 100);
cParticle.Position = Vector3.Transform(cParticle.Position, Emitter.OrientationData.Orientation);
cParticle.Position += Emitter.PositionData.Position;
}
protected void RepelParticleFromExternalObject(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
// Calculate Direction away from the Object and how far the Particle is from the Object
Vector3 sDirectionAwayFromObject = cParticle.Position - mcExternalObjectPosition;
float fDistance = sDirectionAwayFromObject.Length();
// If the Particle is close enough to the Object to be affected by it
if (fDistance < mfAttractRepelRange)
{
// Repel the Particle from the Object
sDirectionAwayFromObject.Normalize();
cParticle.Velocity += sDirectionAwayFromObject * (mfAttractRepelRange - fDistance) * mfAttractRepelForce;
cParticle.RotationalVelocity.Z += 0.005f;
}
}
protected void GenerateSmokeParticle(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
// If the Smoke Particle System is initialized
if (mcSmokeParticleSystem != null && mcSmokeParticleSystem.IsInitialized)
{
// Only create a Smoke Particles some of the time
if (RandomNumber.NextFloat() < mfAmountOfSmokeToRelease)
{
// Create a new Smoke Particle at the same Position as this Fire Particle
DefaultTexturedQuadParticle cSmokeParticle = new DefaultTexturedQuadParticle();
mcSmokeParticleSystem.InitializeParticle(cSmokeParticle);
cSmokeParticle.Position = cParticle.Position;
// Add the Particle to the Smoke Particle System
mcSmokeParticleSystem.AddParticle(cSmokeParticle);
}
}
}
//===========================================================
// Particle Update Functions
//===========================================================
protected void CreateExplosionParticles(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
// If the Fireworks Explosion Particle Systems are Initialized
if (mcFireworksExplosionParticleSystem1.IsInitialized &&
mcFireworksExplosionParticleSystem2.IsInitialized &&
mcFireworksExplosionParticleSystem3.IsInitialized &&
mcFireworksExplosionParticleSystem4.IsInitialized)
{
// Randomly choose which Particle System to use for the Explosion
int iPSToUse = RandomNumber.Next(1, 5);
DPSFDefaultTexturedQuadParticleSystem<DefaultTexturedQuadParticle, DefaultTexturedQuadParticleVertex> cExplosionPS;
switch (iPSToUse)
{
default:
case 1:
cExplosionPS = mcFireworksExplosionParticleSystem1;
break;
case 2:
cExplosionPS = mcFireworksExplosionParticleSystem2;
break;
case 3:
cExplosionPS = mcFireworksExplosionParticleSystem3;
break;
case 4:
cExplosionPS = mcFireworksExplosionParticleSystem4;
break;
}
// Randomly select how many particles should be in this explosion
int iNumberOfExplosionParticles = RandomNumber.Next(5, 100);
// Randomly select the size of the Explosion Particles
int iParticleSize = RandomNumber.Next(0, (int)cExplosionPS.InitialProperties.StartSizeMax);
// Initialize the Explosion Particles Color variable
Color sParticleColor = Color.White;
// If all of the Explosion Particles should be the same Color
if (RandomNumber.Next(0, 5) != 2)
{
// Randomly select the color of the Explosion Particles
sParticleColor = DPSFHelper.LerpColor(Color.Black, Color.White, RandomNumber.NextFloat(), RandomNumber.NextFloat(), RandomNumber.NextFloat(), RandomNumber.NextFloat());
}
// Create the explosion particles
for (int iIndex = 0; iIndex < iNumberOfExplosionParticles; iIndex++)
{
DefaultTexturedQuadParticle cExplosionParticle = new DefaultTexturedQuadParticle();
cExplosionPS.InitializeParticle(cExplosionParticle);
// Start the Explosion Particles where the fireworks Particle died
cExplosionParticle.Position = cParticle.Position;
// If the random Particle Size is big enough
if (iParticleSize > cExplosionPS.InitialProperties.StartSizeMin)
{
// Make all Explosion Particles this Size
cExplosionParticle.Size = iParticleSize;
}
// Else each Particle will be a random Size
// If the Explosion Particles should all be the same Color
if (sParticleColor != Color.White)
{
cExplosionParticle.Color = sParticleColor;
}
// Add the Explosion Particle to the Explosion Particle System
cExplosionPS.AddParticle(cExplosionParticle);
}
// If the Explosion Smoke Particle System is initialized
if (mcFireworksExplosionSmokeParticleSystem.IsInitialized)
{
// Create some Smoke at the position where the Particle died
mcFireworksExplosionSmokeParticleSystem.Emitter.PositionData.Position = cParticle.Position;
// Choose how much Smoke to create based on how big the Explosion was
int iNumberOfSmokeParticles = iNumberOfExplosionParticles / 2;
// Create the Smoke Particles
for (int iIndex = 0; iIndex < iNumberOfSmokeParticles; iIndex++)
{
mcFireworksExplosionSmokeParticleSystem.AddParticle();
}
}
}
}
// Change the Particle's Velocity
public void UpdateParticleVelocityToTravelRight(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
cParticle.Velocity = new Vector3(RandomNumber.Next(50, 100), 0, 0);
}
//===========================================================
// Particle Update Functions
//===========================================================
//-----------------------------------------------------------
// TODO: Place your Particle Update functions here, using the
// same function prototype as below (i.e. public void FunctionName(DPSFParticle, float))
//-----------------------------------------------------------
/// <summary>
/// Updates the Particle's Start and End Colors
/// </summary>
/// <param name="cParticle">The Particle to update</param>
/// <param name="fElapsedTimeInSeconds">How long it has been since the last update</param>
protected void UpdateParticleResetProperties(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
cParticle.ElapsedTime = 0.0f;
// If this is the first particle that was added to the list
if (cParticle == ActiveParticles.Last.Value)
{
// Choose a new Random Color to use
msStartColor = msEndColor;
msEndColor = DPSFHelper.RandomColor();
int iTempSize = miStartSize;
miStartSize = miEndSize;
miEndSize = iTempSize;
}
cParticle.StartColor = msStartColor;
cParticle.EndColor = msEndColor;
cParticle.StartWidth = cParticle.StartHeight = miStartSize;
cParticle.EndWidth = cParticle.EndHeight = miEndSize;
}
public void InitializeParticleFireworksExplosion(DefaultTexturedQuadParticle cParticle)
{
InitializeParticleUsingInitialProperties(cParticle);
}
/// <summary>
/// Example of how to create a Particle Initialization Function
/// </summary>
/// <param name="cParticle">The Particle to be Initialized</param>
public void InitializeParticleProperties(DefaultTexturedQuadParticle cParticle)
{
// Set the Particle's Lifetime (how long it should exist for) and initial Position
cParticle.Lifetime = 5;
cParticle.Position = Emitter.PositionData.Position;
// If the Particles should travel in random directions
if (mbInitializeParticlesWithRandomDirection)
{
// Give the Particle a random velocity direction to start with
cParticle.Velocity = DPSFHelper.RandomNormalizedVector() * 50;
}
else
{
// Emit all of the Particles in the same direction
cParticle.Velocity = Vector3.Right * 50;
// Adjust the Particle's starting velocity direction according to the Emitter's Orientation
cParticle.Velocity = Vector3.Transform(cParticle.Velocity, Emitter.OrientationData.Orientation);
}
cParticle.RotationalVelocity.Z = RandomNumber.Between(-MathHelper.Pi, MathHelper.Pi);
cParticle.Size = 10;
cParticle.StartColor = cParticle.EndColor = cParticle.Color = DPSFHelper.RandomColor();
}
public void InitializeParticleFireworksExplosionSmoke(DefaultTexturedQuadParticle cParticle)
{
InitializeParticleUsingInitialProperties(cParticle);
// Make it so all Smoke doesn't start from the same spot
cParticle.Position += new Vector3(RandomNumber.Next(-20, 20), RandomNumber.Next(-20, 20), RandomNumber.Next(-20, 20));
}
//===========================================================
// Structures and Variables
//===========================================================
//===========================================================
// Vertex Update and Overridden Particle System Functions
//===========================================================
/// <summary>
/// Function to update the Vertex properties according to the Particle properties
/// </summary>
/// <param name="sVertexBuffer">The array containing the Vertices to be drawn</param>
/// <param name="iIndex">The Index in the array where the Particle's Vertex info should be placed</param>
/// <param name="Particle">The Particle to copy the information from</param>
protected virtual void UpdateVertexProperties(ref DefaultTexturedQuadParticleVertex[] sVertexBuffer, int iIndex, DPSFParticle Particle)
{
// Cast the Particle to the type it really is
DefaultTexturedQuadParticle cParticle = (DefaultTexturedQuadParticle)Particle;
// Calculate what half of the Quads Width and Height are
float fHalfWidth = cParticle.Width / 2.0f;
float fHalfHeight = cParticle.Height / 2.0f;
// Calculate the Positions of the Quads corners around the origin
Vector3 sTopLeft = new Vector3(-fHalfWidth, -fHalfHeight, 0);
Vector3 sTopRight = new Vector3(fHalfWidth, -fHalfHeight, 0);
Vector3 sBottomLeft = new Vector3(-fHalfWidth, fHalfHeight, 0);
Vector3 sBottomRight = new Vector3(fHalfWidth, fHalfHeight, 0);
// Rotate the Quad corners around the origin according to its Orientation,
// then calculate their final Positions
sTopLeft = Vector3.Transform(sTopLeft, cParticle.Orientation) + cParticle.Position;
sTopRight = Vector3.Transform(sTopRight, cParticle.Orientation) + cParticle.Position;
sBottomLeft = Vector3.Transform(sBottomLeft, cParticle.Orientation) + cParticle.Position;
sBottomRight = Vector3.Transform(sBottomRight, cParticle.Orientation) + cParticle.Position;
// Effects expect a premultiplied color, so get the actual color to use.
Color premultipliedColor = cParticle.ColorAsPremultiplied;
// Copy this Particle's renderable Properties to the Vertex Buffer
// This is a Quad so we must copy all 4 Vertices over
sVertexBuffer[iIndex].Position = sBottomLeft;
sVertexBuffer[iIndex].TextureCoordinate = new Vector2(0, 1);
sVertexBuffer[iIndex].Color = premultipliedColor;
sVertexBuffer[iIndex + 1].Position = sTopLeft;
sVertexBuffer[iIndex + 1].TextureCoordinate = new Vector2(0, 0);
sVertexBuffer[iIndex + 1].Color = premultipliedColor;
sVertexBuffer[iIndex + 2].Position = sBottomRight;
sVertexBuffer[iIndex + 2].TextureCoordinate = new Vector2(1, 1);
sVertexBuffer[iIndex + 2].Color = premultipliedColor;
sVertexBuffer[iIndex + 3].Position = sTopRight;
sVertexBuffer[iIndex + 3].TextureCoordinate = new Vector2(1, 0);
sVertexBuffer[iIndex + 3].Color = premultipliedColor;
// Fill in the Index Buffer for the newly added Vertices.
// Specify the Vertices in Clockwise order.
// It takes 6 Indices to represent a quad (2 triangles = 6 corners).
// If we should be using the 32-bit Integer Index Buffer, fill it.
if (this.IsUsingIntegerIndexBuffer)
{
IndexBuffer[IndexBufferIndex++] = iIndex + 1;
IndexBuffer[IndexBufferIndex++] = iIndex + 2;
IndexBuffer[IndexBufferIndex++] = iIndex;
IndexBuffer[IndexBufferIndex++] = iIndex + 1;
IndexBuffer[IndexBufferIndex++] = iIndex + 3;
IndexBuffer[IndexBufferIndex++] = iIndex + 2;
}
// Else we should be using the 16-bit Short Index Buffer.
else
{
IndexBufferShort[IndexBufferIndex++] = (short)(iIndex + 1);
IndexBufferShort[IndexBufferIndex++] = (short)(iIndex + 2);
IndexBufferShort[IndexBufferIndex++] = (short)(iIndex);
IndexBufferShort[IndexBufferIndex++] = (short)(iIndex + 1);
IndexBufferShort[IndexBufferIndex++] = (short)(iIndex + 3);
IndexBufferShort[IndexBufferIndex++] = (short)(iIndex + 2);
}
}
protected void RandomlyToggleVisiblity(DefaultTexturedQuadParticle cParticle, float fElapsedTimeInSeconds)
{
if (RandomNumber.NextFloat() < 0.1f)
{
cParticle.Visible = !cParticle.Visible;
}
}