public bool Update()
{
m_elapsedTime += MyEngineConstants.UPDATE_STEP_SIZE_IN_SECONDS;
if (m_elapsedTime >= Life)
{
return(false);
}
m_normalizedTime += m_elapsedTimeDivider;
m_velocity.Y += m_generation.Gravity * MyEngineConstants.UPDATE_STEP_SIZE_IN_SECONDS;
m_actualPosition.X += Velocity.X * MyEngineConstants.UPDATE_STEP_SIZE_IN_SECONDS;
m_actualPosition.Y += Velocity.Y * MyEngineConstants.UPDATE_STEP_SIZE_IN_SECONDS;
m_actualPosition.Z += Velocity.Z * MyEngineConstants.UPDATE_STEP_SIZE_IN_SECONDS;
if (PivotRotation != null && PivotDistance != null)
{
MyTransparentGeometry.StartParticleProfilingBlock("Pivot calculation");
Vector3 rotation;
float distance;
PivotRotation.GetInterpolatedValue <Vector3>(m_normalizedTime, out rotation);
PivotDistance.GetInterpolatedValue <float>(m_normalizedTime, out distance);
Quaternion rotationQ = Quaternion.CreateFromYawPitchRoll(MathHelper.ToRadians(rotation.Y), MathHelper.ToRadians(rotation.X), MathHelper.ToRadians(rotation.Z));
m_actualPivot = Vector3.Transform(Vector3.Forward, rotationQ) * distance;
MyTransparentGeometry.EndParticleProfilingBlock();
}
if (Acceleration != null)
{
MyTransparentGeometry.StartParticleProfilingBlock("Acceleration calculation");
Acceleration.GetInterpolatedValue <Vector3>(m_normalizedTime, out m_actualAcceleration);
Velocity += m_actualAcceleration * MyEngineConstants.UPDATE_STEP_SIZE_IN_SECONDS;
MyTransparentGeometry.EndParticleProfilingBlock();
}
m_actualAngle += RotationSpeed * MyEngineConstants.UPDATE_STEP_SIZE_IN_SECONDS;
MyUtils.AssertIsValid(m_actualPosition);
MyUtils.AssertIsValid(m_actualAngle);
return(true);
}
public void PrepareForDraw(ref VRageRender.MyBillboard effectBillboard)
{
m_billboards.Clear();
if (m_particles.Count == 0)
{
return;
}
if (UseLayerSorting && effectBillboard == null)
{
effectBillboard = MyTransparentGeometry.AddBillboardEffect(m_effect);
if (effectBillboard != null)
{
m_billboards.Add(effectBillboard);
}
}
using (ParticlesLock.AcquireSharedUsing())
{
foreach (MyAnimatedParticle particle in m_particles)
{
MyTransparentGeometry.StartParticleProfilingBlock("m_preallocatedBillboards.Allocate()");
VRageRender.MyBillboard billboard = MyTransparentGeometry.AddBillboardParticle(particle, effectBillboard, !UseLayerSorting);
if (billboard != null)
{
if (!UseLayerSorting)
{
billboard.Position0.AssertIsValid();
billboard.Position1.AssertIsValid();
billboard.Position2.AssertIsValid();
billboard.Position3.AssertIsValid();
m_billboards.Add(billboard);
}
}
MyTransparentGeometry.EndParticleProfilingBlock();
if (billboard == null)
{
break;
}
}
}
}
// Update position, check collisions, etc. and draw if particle still lives.
// Return false if particle dies/timeouts in this tick.
public bool Draw(VRageRender.MyBillboard billboard)
{
MyTransparentGeometry.StartParticleProfilingBlock("Distance calculation");
// This time is scaled according to planned lifespan of the particle
// Distance for sorting
billboard.DistanceSquared = (float)Vector3D.DistanceSquared(MyTransparentGeometry.Camera.Translation, m_actualPosition);
MyTransparentGeometry.EndParticleProfilingBlock();
// If distance to camera is really small don't draw it.
if (billboard.DistanceSquared <= 0.1f)
{
return(false);
}
MyTransparentGeometry.StartParticleProfilingBlock("Quad calculation");
MyTransparentGeometry.StartParticleProfilingBlock("actualRadius");
float actualRadius = 1;
Radius.GetInterpolatedValue <float>(m_normalizedTime, out actualRadius);
MyTransparentGeometry.EndParticleProfilingBlock();
billboard.ContainedBillboards.Clear();
billboard.Near = m_generation.GetEffect().Near;
billboard.Lowres = m_generation.GetEffect().LowRes || VRageRender.MyRenderConstants.RenderQualityProfile.LowResParticles;
billboard.CustomViewProjection = -1;
billboard.ParentID = -1;
float alpha = 1;
if (Type == MyParticleTypeEnum.Point)
{
MyTransparentGeometry.StartParticleProfilingBlock("GetBillboardQuadRotated");
GetBillboardQuadRotated(billboard, ref m_actualPosition, actualRadius, m_actualAngle);
MyTransparentGeometry.EndParticleProfilingBlock();
}
else if (Type == MyParticleTypeEnum.Line)
{
if (MyUtils.IsZero(Velocity.LengthSquared()))
{
Velocity = MyUtils.GetRandomVector3Normalized();
}
MyQuadD quad = new MyQuadD();
MyPolyLineD polyLine = new MyPolyLineD();
polyLine.LineDirectionNormalized = MyUtils.Normalize(Velocity);
if (m_actualAngle > 0)
{
polyLine.LineDirectionNormalized = Vector3.TransformNormal(polyLine.LineDirectionNormalized, Matrix.CreateRotationY(MathHelper.ToRadians(m_actualAngle)));
}
polyLine.Point0 = m_actualPosition;
polyLine.Point1.X = m_actualPosition.X + polyLine.LineDirectionNormalized.X * actualRadius;
polyLine.Point1.Y = m_actualPosition.Y + polyLine.LineDirectionNormalized.Y * actualRadius;
polyLine.Point1.Z = m_actualPosition.Z + polyLine.LineDirectionNormalized.Z * actualRadius;
if (m_actualAngle > 0)
{ //centerize
polyLine.Point0.X = polyLine.Point0.X - polyLine.LineDirectionNormalized.X * actualRadius * 0.5f;
polyLine.Point0.Y = polyLine.Point0.Y - polyLine.LineDirectionNormalized.Y * actualRadius * 0.5f;
polyLine.Point0.Z = polyLine.Point0.Z - polyLine.LineDirectionNormalized.Z * actualRadius * 0.5f;
polyLine.Point1.X = polyLine.Point1.X - polyLine.LineDirectionNormalized.X * actualRadius * 0.5f;
polyLine.Point1.Y = polyLine.Point1.Y - polyLine.LineDirectionNormalized.Y * actualRadius * 0.5f;
polyLine.Point1.Z = polyLine.Point1.Z - polyLine.LineDirectionNormalized.Z * actualRadius * 0.5f;
}
polyLine.Thickness = Thickness;
var camPos = MyTransparentGeometry.Camera.Translation;
MyUtils.GetPolyLineQuad(out quad, ref polyLine, camPos);
if (this.m_generation.AlphaAnisotropic)
{
float angle = 1 - Math.Abs(Vector3.Dot(MyUtils.Normalize(MyTransparentGeometry.Camera.Forward), polyLine.LineDirectionNormalized));
float alphaCone = (float)Math.Pow(angle, 0.5f);
alpha = alphaCone;
}
billboard.Position0 = quad.Point0;
billboard.Position1 = quad.Point1;
billboard.Position2 = quad.Point2;
billboard.Position3 = quad.Point3;
}
else if (Type == MyParticleTypeEnum.Trail)
{
if (Quad.Point0 == Quad.Point2) //not moving particle
{
return(false);
}
if (Quad.Point1 == Quad.Point3) //not moving particle was previous one
{
return(false);
}
if (Quad.Point0 == Quad.Point3) //not moving particle was previous one
{
return(false);
}
billboard.Position0 = Quad.Point0;
billboard.Position1 = Quad.Point1;
billboard.Position2 = Quad.Point2;
billboard.Position3 = Quad.Point3;
//if (this.m_generation.AlphaAnisotropic)
/* { //Trails are anisotropic by default (nobody wants them to see ugly)
* Vector3 lineDir = Vector3.Normalize(Quad.Point1 - Quad.Point0);
* float angle = 1 - Math.Abs(Vector3.Dot(MyMwcUtils.Normalize(MyCamera.ForwardVector), lineDir));
* float alphaCone = (float)Math.Pow(angle, 0.3f);
* alpha = alphaCone;
* }*/
}
else
{
throw new NotSupportedException(Type + " is not supported particle type");
}
MyTransparentGeometry.EndParticleProfilingBlock();
MyTransparentGeometry.StartParticleProfilingBlock("Material calculation");
Vector4 color;
Color.GetInterpolatedValue <Vector4>(m_normalizedTime, out color);
var material1 = MyTransparentMaterials.GetMaterial("ErrorMaterial");
var material2 = MyTransparentMaterials.GetMaterial("ErrorMaterial");
float textureBlendRatio = 0;
if ((Flags & ParticleFlags.BlendTextures) != 0)
{
float prevTime, nextTime, difference;
Material.GetPreviousValue(m_normalizedTime, out material1, out prevTime);
Material.GetNextValue(m_normalizedTime, out material2, out nextTime, out difference);
if (prevTime != nextTime)
{
textureBlendRatio = (m_normalizedTime - prevTime) * difference;
}
}
else
{
Material.GetInterpolatedValue(m_normalizedTime, out material1);
}
MyTransparentGeometry.EndParticleProfilingBlock();
//This gets 0.44ms for 2000 particles
MyTransparentGeometry.StartParticleProfilingBlock("billboard.Start");
billboard.Material = material1.Name;
billboard.BlendMaterial = material2.Name;
billboard.BlendTextureRatio = textureBlendRatio;
billboard.EnableColorize = false;
billboard.Color = color * alpha * m_generation.GetEffect().UserColorMultiplier;
MyTransparentGeometry.EndParticleProfilingBlock();
return(true);
}