public void InitializeParticleExplosion(DefaultSprite3DBillboardTextureCoordinatesParticle particle)
{
particle.Lifetime = RandomNumber.Between(0.3f, 0.7f);
particle.Color = particle.StartColor = ExplosionColor;
particle.EndColor = Color.Black;
particle.Position = Emitter.PositionData.Position + new Vector3(RandomNumber.Next(-25, 25), RandomNumber.Next(-25, 25), RandomNumber.Next(-25, 25));
particle.Velocity = DPSFHelper.RandomNormalizedVector() * RandomNumber.Next(1, 50);
particle.ExternalForce = new Vector3(0, 80, 0); // We want the smoke to rise
particle.Size = particle.StartSize = 1; // Have the particles start small and grow
particle.EndSize = ExplosionParticleSize;
// Give the particle a random initial orientation and random rotation velocity (only need to Roll the particle since it will always face the camera)
particle.Rotation = RandomNumber.Between(0, MathHelper.TwoPi);
particle.RotationalVelocity = RandomNumber.Between(-MathHelper.PiOver2, MathHelper.PiOver2);
// Randomly pick which texture coordinates to use for this particle
Rectangle textureCoordinates;
switch (RandomNumber.Next(0, 4))
{
default:
case 0: textureCoordinates = _flameSmoke1TextureCoordinates; break;
case 1: textureCoordinates = _flameSmoke2TextureCoordinates; break;
case 2: textureCoordinates = _flameSmoke3TextureCoordinates; break;
case 3: textureCoordinates = _flameSmoke4TextureCoordinates; break;
}
particle.SetTextureCoordinates(textureCoordinates);
}
public void InitializeParticleExplosion(DefaultSprite3DBillboardTextureCoordinatesParticle particle)
{
particle.Lifetime = RandomNumber.Between(0.5f, 1.0f);
particle.Color = ExplosionColor;
particle.Position = Emitter.PositionData.Position + new Vector3(RandomNumber.Next(-25, 25), RandomNumber.Next(-25, 25), RandomNumber.Next(-25, 25));
particle.Velocity = DPSFHelper.RandomNormalizedVector() * RandomNumber.Next(30, 50);
particle.ExternalForce = new Vector3(0, 20, 0);
particle.Size = ExplosionParticleSize;
particle.SetTextureCoordinates(_roundSparkTextureCoordinates);
}
/// <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;
}
public void InitializeParticleExplosion(DefaultTextureQuadTextureCoordinatesParticle particle)
{
particle.Lifetime = RandomNumber.Between(0.5f, 1.0f);
particle.Color = ExplosionColor;
particle.Position = Emitter.PositionData.Position;
particle.Velocity = DPSFHelper.RandomNormalizedVector() * RandomNumber.Next(175, 225);
particle.Right = -particle.Velocity;
particle.Width = ExplosionParticleSize;
particle.Height = ExplosionParticleSize * _textureAspectRatio;
// Set the spark particle's texture coordinates
particle.SetTextureCoordinates(_sparkTextureCoordinates, Texture.Width, Texture.Height);
}
public void InitializeParticleExplosion(DefaultTextureQuadTextureCoordinatesParticle particle)
{
particle.Lifetime = RandomNumber.Between(0.3f, 0.5f);
particle.Color = ExplosionColor;
particle.Position = Emitter.PositionData.Position;
particle.Velocity = DPSFHelper.RandomNormalizedVector() * RandomNumber.Next(100, 150);
particle.Right = -particle.Velocity;
// Specify the particle's width-to-height ratio as 8:1 so it looks better
particle.Width = 8; particle.Height = 1;
// Calculate and set what the particle's EndWidth and EndHeight should be (2 times the start size)
particle.ScaleToWidth(ExplosionParticleSize * 2);
particle.EndWidth = particle.Width;
particle.EndHeight = particle.Height;
// Calculate and set what the particle's StartWidth and StartHeight should be
particle.ScaleToWidth(ExplosionParticleSize);
particle.StartWidth = particle.Width;
particle.StartHeight = particle.Height;
// Randomly pick which texture coordinates to use for this particle
Rectangle textureCoordinates;
switch (RandomNumber.Next(0, 3))
{
default:
case 0: textureCoordinates = _smokeTrail1TextureCoordinates; break;
case 1: textureCoordinates = _smokeTrail2TextureCoordinates; break;
case 2: textureCoordinates = _smokeTrail3TextureCoordinates; break;
}
particle.SetTextureCoordinates(textureCoordinates, Texture.Width, Texture.Height);
}
public void InitializeParticleExplosion(DefaultSprite3DBillboardTextureCoordinatesParticle particle)
{
particle.Lifetime = RandomNumber.Between(1.2f, 1.7f);
particle.Color = particle.StartColor = ExplosionColor;
particle.EndColor = Color.DarkGray;
particle.Position = Emitter.PositionData.Position;
particle.ExternalForce = new Vector3(0, -80, 0);
particle.RotationalVelocity = RandomNumber.Between(-MathHelper.PiOver2, MathHelper.PiOver2);
particle.Velocity = DPSFHelper.RandomNormalizedVector(); // Calculate the direction the particle will travel in
// We want the debris to travel upwards more often than downward, so if it's travelling downward switch it to travel upward 50% of the time
if (particle.Velocity.Y < 0 && RandomNumber.Next(0, 2) == 0)
{
particle.Velocity.Y *= -1;
}
// Fire some particles towards the camera (but not directly at it) for a more dramatic effect
if (RandomNumber.Between(0, 5) == 0)
{
// Calculate a point somewhere around the camera
int distance = 10;
Vector3 somewhereAroundTheCamera = new Vector3(CameraPosition.X + RandomNumber.Next(-distance, distance),
CameraPosition.Y + RandomNumber.Next(-distance, distance),
CameraPosition.Z + RandomNumber.Next(-distance, distance));
// Direct the Particle towards the spot around the camera
particle.Velocity = somewhereAroundTheCamera - particle.Position;
particle.Velocity.Normalize();
}
// Set the Particle's Speed
particle.Velocity *= RandomNumber.Next(100, 150);
// Randomly pick which texture coordinates to use for this particle
Rectangle textureCoordinates;
switch (RandomNumber.Next(0, 9))
{
default:
case 0: textureCoordinates = _debris1TextureCoordinates; break;
case 1: textureCoordinates = _debris2TextureCoordinates; break;
case 2: textureCoordinates = _debris3TextureCoordinates; break;
case 3: textureCoordinates = _debris4TextureCoordinates; break;
case 4: textureCoordinates = _debris5TextureCoordinates; break;
case 5: textureCoordinates = _debris6TextureCoordinates; break;
case 6: textureCoordinates = _debris7TextureCoordinates; break;
case 7: textureCoordinates = _debris8TextureCoordinates; break;
case 8: textureCoordinates = _debris9TextureCoordinates; break;
}
particle.SetTextureCoordinates(textureCoordinates);
// Set the Width to Height ratio so the image isn't skewed when we scale it
particle.Width = textureCoordinates.Width;
particle.Height = textureCoordinates.Height;
// Set the particle to the specified size, give or take 25%
particle.ScaleToWidth(ExplosionParticleSize * RandomNumber.Between(0.75f, 1.25f));
}
