} // end of c'tor
public static void AddSmokeParticle(ref SharedSmokeEmitter.SmokeParticle p)
{
// Get the index formn the lifetime.
int i = 0;
while (p.lifetime > smokeMaxLife[i])
{
++i;
}
Debug.Assert(i < kNumSmokes);
smoke[i].AddParticle(ref p);
} // end of AddSmokeParticle()
public void AddSplashes(int numSplashes, Vector3 pos, Vector3 vel, float radius, Vector4 tint)
{
Vector3 ax0 = new Vector3(-vel.Y, vel.X, 0.0f);
float lenSq = ax0.LengthSquared();
if (lenSq > 0)
{
ax0 *= (float)(1.0 / Math.Sqrt(lenSq));
}
else
{
ax0 = Vector3.UnitY;
}
Vector3 ax1 = Vector3.Normalize(Vector3.Cross(vel, ax0));
float speed = vel.Length();
Vector3 ax2 = vel / speed;
Random rnd = BokuGame.bokuGame.rnd;
for (int i = 0; i < numSplashes; ++i)
{
SharedSmokeEmitter.SmokeParticle party = new SharedSmokeEmitter.SmokeParticle();
float rnd0 = (float)(rnd.NextDouble() * 2.0 - 1.0);
float rnd1 = (float)(rnd.NextDouble() * 2.0 - 1.0);
float rnd2 = (float)(rnd.NextDouble() * 2.0 - 1.0) * 0.2f + 1.0f;
Vector3 deviate = (ax0 * rnd0 + ax1 * rnd1);
Vector3 pPos = pos + deviate * radius * 0.2f;
Vector3 pVel = vel * rnd2 + deviate * speed * 0.2f;
party.position = pPos;
party.velocity = pVel;
party.acceleration = gravity;
party.startRadius = radius * 0.2f;
party.endRadius = radius;
party.rotationRate = 0.0f;
party.lifetime = maxAge;
party.color = tint;
SharedEmitterManager.Splashes.AddParticle(ref party);
}
}
} // end of SparkEmitter AddSparks()
/// <summary>
/// Add in some explicit sparks.
/// </summary>
/// <param name="numSparks">How many</param>
/// <param name="sparks">List of positions</param>
/// <param name="vels">List of velocities (including speed)</param>
/// <param name="minRadius">Starting size</param>
/// <param name="maxRadius">Ending size</param>
public void AddSparks(int numSparks, Vector3[] pos, Vector3[] vel, float minRadius, float maxRadius)
{
for (int i = 0; i < numSparks; i++)
{
Vector4 color = Vector4.One;
SharedSmokeEmitter.SmokeParticle party = new SharedSmokeEmitter.SmokeParticle();
party.position = pos[i];
party.velocity = vel[i];
party.acceleration = gravity;
party.startRadius = minRadius;
party.endRadius = maxRadius;
party.rotationRate = 0.0f;
party.lifetime = maxAge;
party.color = color;
SharedEmitterManager.Sparks.AddParticle(ref party);
}
}
} // end of c'tor
/// <summary>
/// Create a new burst of Splashes.
/// </summary>
/// <param name="numSplashes">How many to create.</param>
/// <param name="origin">Where the Splashes should originate from.</param>
/// <param name="minRadius">Starting size.</param>
/// <param name="maxRadius">Ending size.</param>
/// <param name="speed">Initial speed of particles. If this is bigger, a more spread burst is created.</param>
/// <param name="color">Color used to tint the particles. Generaly this should just be Vector4.One.</param>
public void AddSplashes(int numSplashes, Vector3 origin, float minRadius, float maxRadius, float speed, Vector4 color)
{
Random rnd = BokuGame.bokuGame.rnd;
for (int i = 0; i < numSplashes; i++)
{
Vector3 velocity = new Vector3((float)rnd.NextDouble() - (float)rnd.NextDouble(), (float)rnd.NextDouble() - (float)rnd.NextDouble(), (float)rnd.NextDouble() - (float)rnd.NextDouble());
velocity *= speed;
SharedSmokeEmitter.SmokeParticle party = new SharedSmokeEmitter.SmokeParticle();
party.position = origin;
party.velocity = velocity;
party.acceleration = gravity;
party.startRadius = minRadius;
party.endRadius = maxRadius;
party.rotationRate = 0.0f;
party.lifetime = maxAge;
party.color = color;
SharedEmitterManager.Splashes.AddParticle(ref party);
}
}
} // end of AddSmokeParticle()
public static void AddDistortedSmokeParticle(ref SharedSmokeEmitter.SmokeParticle p)
{
distortedSmoke.AddParticle(ref p);
} // end of AddDistortedSmokeParticle()
protected float partial = 0.0f; // Number of particles that need to be emitted.
public override void Update()
{
// See if we've died.
if (Dying)
{
// We don't need to wait for any particles to
// go away since the shared emitter owns them.
Active = false;
RemoveFromManager();
}
if (emitting)
{
float dt = Time.GameTimeFrameSeconds;
Random rnd = BokuGame.bokuGame.rnd;
if (LinearEmission)
{
Vector3 deltaPosition = position - PreviousPosition;
float dist = deltaPosition.Length();
partial += dist * EmissionRate / Scale;
}
else
{
partial += dt * EmissionRate;
}
// Emit as many particles as needed this
// frame to keep up with the emission rate.
SharedSmokeEmitter.SmokeParticle particle = new SharedSmokeEmitter.SmokeParticle();
while (partial >= 1.0f)
{
// Pick a random position somewhere along the path covered this frame.
Vector3 pos = position - (position - PreviousPosition) * (float)rnd.NextDouble();
if (PositionJitter > 0.0f)
{
pos += PositionJitter * new Vector3((float)rnd.NextDouble() - (float)rnd.NextDouble(), (float)rnd.NextDouble() - (float)rnd.NextDouble(), (float)rnd.NextDouble() - (float)rnd.NextDouble());
}
float lifetime = MinLifetime + (float)rnd.NextDouble() * (MaxLifetime - MinLifetime);
// Fill in the particle data.
particle.position = pos;
particle.velocity = velocity;
particle.acceleration = Vector3.Zero;
particle.color = Color;
particle.startRadius = StartRadius * Scale;
particle.endRadius = EndRadius * Scale;
float rotationRate = MaxRotationRate * (float)(rnd.NextDouble() - rnd.NextDouble());
particle.rotationRate = rotationRate;
particle.lifetime = lifetime;
particle.flash = Vector3.Zero;
if ((usage & Use.Regular) != 0)
{
SharedEmitterManager.AddSmokeParticle(ref particle);
}
partial -= 1.0f;
}
}
PreviousPosition = position;
} // end of Update()
