/// <summary>
/// Creates a new particleEmitter
/// </summary>
/// <param name="repeat">Should the emitter stay active and keep emitting particles after the max amount of particles have been emitted</param>
/// <param name="maxParticles">Max amount of particles</param>
/// <param name="emitLocation">The location to emit from</param>
/// <param name="direction">The velocity of the particles</param>
/// <param name="particleSpeed">The speed of the particles</param>
/// <param name="maxAngle">The angle based on the velocity the particles can be emitted from</param>
/// <param name="particleLifeTime">Lifetime of particles in seconds</param>
/// <param name="particleScale">Size of particles </param>
/// <param name="particleShape">Particle shape</param>
/// <param name="startColor">Starting particle color</param>
/// <param name="autoStart">Should the emitter start immediatly</param>
/// <param name="emitType">The type of the emitter</param>
/// <param name="endColor">The color of the particle at the end</param>
public ParticleEmitter(bool autoStart, bool repeat, int maxParticles, Vector2 emitLocation, Vector2 direction,
float particleSpeed, float maxAngle, float particleLifeTime, float particleScale, ParticleShape particleShape,
EmitType emitType, Color startColor, Color endColor)
{
this.repeat = repeat;
this.maxParticles = maxParticles;
this.Position = emitLocation;
this.ParticleDirection = direction;
this.particleSpeed = particleSpeed;
this.maxAngle = maxAngle;
this.particleLifeTime = particleLifeTime;
this.particleScale = particleScale;
this.particleShape = particleShape;
this.emitType = emitType;
this.startColor = startColor;
this.endColor = endColor;
this.Paused = !autoStart;
random = new Random();
if (repeat == false)
{
emitterLifeTime = particleLifeTime;
}
particleTexture = ParticleSystem.Instance.GetTexture(particleShape);
ParticleSystem.Instance.AddEmitter(this);
}
public Texture2D GetTexture(ParticleShape particleShape)
{
if (!textures.ContainsKey(particleShape))
{
throw new ArgumentException("Shape doesnt exist in our dictionary");
}
return(textures[particleShape]);
}
public Particle(int Dim, int HistoryLength, double[] startPos = null, double startAngl = 0.0, ParticleShape shape = ParticleShape.spherical)
{
m_Dim = Dim;
m_HistoryLength = HistoryLength;
m_shape = shape;
#region Particle history
// =============================
for (int i = 0; i < HistoryLength; i++)
{
currentPos_P.Add(new double[Dim]);
currentAng_P.Add(new double());
vel_P.Add(new double[Dim]);
rot_P.Add(new double());
forces_P.Add(new double[Dim]);
torque_P.Add(new double());
}
#endregion
#region Initial values
// =============================
if (startPos == null)
{
if (Dim == 2)
{
startPos = new double[] { 0.0, 0.0 };
}
else
{
startPos = new double[] { 0.0, 0.0, 0.0 };
}
}
currentPos_P[0] = startPos;
//From degree to radiant
currentAng_P[0] = startAngl * 2 * Math.PI / 360;
//vel_P[0][0] = 2e-8;
UpdateLevelSetFunction();
#endregion
}
public void AddParticleShape(ParticleShape pS)
{
ParticleShapes.Add(pS);
pS.Initialize(this);
}
public static Particle CreateParticle(ParticleBehaviour Behaviour, ParticleShape Shape, Rectangle Clip, Vector2 PositionModifier, Random RandomFeed, Int32 Opacity, Int32 Lifespan, Single SizeRatio, Vector2 VelocityModifier)
{
Particle p = new Particle();
p.Shape = Shape;
switch (Behaviour)
{
case ParticleBehaviour.Explode:
{
p.Opacity = Opacity;
p.BackColor = Color.FromNonPremultiplied(RandomFeed.Next(255), 0, 0, 255);
p.Position = new Vector2((Single)Clip.Width / 2f + PositionModifier.X, (Single)Clip.Height / 2f + PositionModifier.Y);
p.Lifespan = Lifespan;
p.SizeRatioOverTime = SizeRatio;
p.VelocityX = ((Single)RandomFeed.NextDouble() - 0.5f) * ((Single)RandomFeed.NextDouble() * VelocityModifier.X);
p.VelocityY = ((Single)RandomFeed.NextDouble() - 0.5f) * ((Single)RandomFeed.NextDouble() * VelocityModifier.Y);
p.FadeOut = true;
p.FadeOutStartAt = 40;
p.FadeIn = false;
p.FadeInFrameCount = 0;
p.CurrentSize = RandomFeed.Next(5) + 5;
p.PMathX = new PixelMath("x * 2");
p.PMathY = new PixelMath("x * 2");
}
break;
case ParticleBehaviour.Focus:
{
p.Opacity = Opacity;
p.BackColor = Color.FromNonPremultiplied(RandomFeed.Next(255), 0, 0, 255);
p.Position = new Vector2(RandomFeed.Next(Clip.Width), RandomFeed.Next(Clip.Height));
p.Lifespan = Lifespan;
p.SizeRatioOverTime = SizeRatio;
p.VelocityX = (Single)RandomFeed.NextDouble();
p.VelocityY = (Single)RandomFeed.NextDouble();
p.FadeOut = true;
p.FadeOutStartAt = 40;
p.FadeIn = true;
p.FadeInFrameCount = 20;
p.CurrentSize = RandomFeed.Next(5) + 5;
Single xVariation = ((Single)Clip.Width / 2f - p.Position.X) / (Single)p.Lifespan;
Single yVariation = ((Single)Clip.Height / 2f - p.Position.Y) / (Single)p.Lifespan;
p.PMathX = new PixelMath(xVariation.ToString());
p.PMathY = new PixelMath(yVariation.ToString());
}
break;
case ParticleBehaviour.Trail:
{
p.Opacity = Opacity;
p.BackColor = Color.FromNonPremultiplied(RandomFeed.Next(255), 0, 0, 255);
p.Position = new Vector2((Single)Clip.Width / 2f + PositionModifier.X, (Single)Clip.Height / 2f + PositionModifier.Y);
p.Lifespan = Lifespan;
p.SizeRatioOverTime = SizeRatio;
p.VelocityX = ((Single)RandomFeed.NextDouble() - 0.5f) * ((Single)RandomFeed.NextDouble() * VelocityModifier.X);
p.VelocityY = ((Single)RandomFeed.NextDouble() - 0.5f) * ((Single)RandomFeed.NextDouble() * VelocityModifier.Y);
p.FadeOut = true;
p.FadeOutStartAt = 40;
p.FadeIn = false;
p.FadeInFrameCount = 0;
p.CurrentSize = RandomFeed.Next(5) + 2;
p.PMathX = new PixelMath("x");
p.PMathY = new PixelMath("x");
}
break;
}
return p;
}
public void AddParticules(Int32 Number, ParticleBehaviour Behaviour, ParticleShape Shape, Vector2 PositionModifier)
{
Number.TimesDo(() => Particles.Add(Particle.CreateParticle(Behaviour, Shape, ClipTarget, PositionModifier, RandomFeed)));
}
public static Particle CreateParticle(ParticleBehaviour Behaviour, ParticleShape Shape, Rectangle Clip, Vector2 PositionModifier, Random RandomFeed)
{
return Particle.CreateParticle(Behaviour, Shape, Clip, PositionModifier, RandomFeed, 255, 60, 0.99f, new Vector2(3f, 3f));
}
