// UPDATE.
private void UpdateSystem()
{
// SWAP INPUT/OUTPUT.
mPositionBuffer.Swap();
mVelocityBuffer.Swap();
mLifetimeBuffer.Swap();
// BIND INPUT BUFFERS.
sComputeShader.SetBuffer(sKernelUpdate, "gPositionIN", mPositionBuffer.GetInputBuffer());
sComputeShader.SetBuffer(sKernelUpdate, "gVelocityIN", mVelocityBuffer.GetInputBuffer());
sComputeShader.SetBuffer(sKernelUpdate, "gLifetimeIN", mLifetimeBuffer.GetInputBuffer());
// BIND OUTPUT BUFFERS.
sComputeShader.SetBuffer(sKernelUpdate, "gPositionOUT", mPositionBuffer.GetOutputBuffer());
sComputeShader.SetBuffer(sKernelUpdate, "gVelocityOUT", mVelocityBuffer.GetOutputBuffer());
sComputeShader.SetBuffer(sKernelUpdate, "gLifetimeOUT", mLifetimeBuffer.GetOutputBuffer());
sComputeShader.SetBuffer(sKernelUpdate, "gColorOUT", mColorBuffer);
sComputeShader.SetBuffer(sKernelUpdate, "gHaloOUT", mHaloBuffer);
sComputeShader.SetBuffer(sKernelUpdate, "gScaleOUT", mScaleBuffer);
sComputeShader.SetBuffer(sKernelUpdate, "gTransparencyOUT", mTransperancyBuffer);
// BIND VALUE OF LIFETIME BUFFERS.
sComputeShader.SetInt("gColorLifetimeCount", mDescriptor.ColorOverLifetime.Length());
sComputeShader.SetBuffer(sKernelUpdate, "gColorLifetimeBuffer", mColorLifetimePointsBuffer);
sComputeShader.SetInt("gHaloLifetimeCount", mDescriptor.HaloOverLifetime.Length());
sComputeShader.SetBuffer(sKernelUpdate, "gHaloLifetimeBuffer", mHaloLifetimePointsBuffer);
sComputeShader.SetInt("gScaleLifetimeCount", mDescriptor.ScaleOverLifetime.Length());
sComputeShader.SetBuffer(sKernelUpdate, "gScaleLifetimeBuffer", mScaleLifetimePointsBuffer);
sComputeShader.SetInt("gTransparencyLifetimeCount", mDescriptor.OpacityOverLifetime.Length());
sComputeShader.SetBuffer(sKernelUpdate, "gTransparencyLifetimeBuffer", mTransparencyLifetimePointsBuffer);
// SET META DATA.
sComputeShader.SetInt("gMaxParticleCount", mMaxParticleCount);
sComputeShader.SetFloat("gDeltaTime", Time.deltaTime);
sComputeShader.SetFloats("gConstantAcceleration", new float[] { mDescriptor.ConstantAcceleration.x, mDescriptor.ConstantAcceleration.y, mDescriptor.ConstantAcceleration.z });
sComputeShader.SetFloat("gConstantDrag", mDescriptor.ConstantDrag);
// ACCELERATOR.
Dictionary <GPUParticleAttractor, GPUParticleAttractor> attractorDictionary = GPUParticleAttractor.GetGPUParticleAttractorDictionary();
if (attractorDictionary == null)
{
sComputeShader.SetInt("gAttractorCount", 0);
}
else
{
Debug.Assert(attractorDictionary.Count < sMaxAttractorCount);
float[] attractorArray = new float[attractorDictionary.Count * 8];
int i = 0;
int count = 0;
foreach (KeyValuePair <GPUParticleAttractor, GPUParticleAttractor> it in attractorDictionary)
{
GPUParticleAttractor attractor = it.Value;
//Skip if inactive.
if (!attractor.gameObject.activeInHierarchy)
{
continue;
}
float scale = Mathf.Max(Mathf.Max(attractor.transform.localScale.x, attractor.transform.localScale.y), attractor.transform.localScale.z);
attractorArray[i++] = attractor.transform.position.x;
attractorArray[i++] = attractor.transform.position.y;
attractorArray[i++] = attractor.transform.position.z;
attractorArray[i++] = attractor.Power;
attractorArray[i++] = scale * attractor.Min;
attractorArray[i++] = scale * attractor.Max;
attractorArray[i++] = 0.0f; //Padding
attractorArray[i++] = 0.0f; //Padding
count++;
}
sGPUParticleAttractorBuffer.SetData(attractorArray);
sComputeShader.SetInt("gAttractorCount", count);
sComputeShader.SetBuffer(sKernelUpdate, "gAttractorBuffer", sGPUParticleAttractorBuffer);
}
// Vector Fields.
Dictionary <GPUParticleVectorField, GPUParticleVectorField> vectorFieldDictionary = GPUParticleVectorField.GetGPUParticleAttractorDictionary();
if (vectorFieldDictionary == null)
{
sComputeShader.SetInt("gVectorFieldCount", 0);
}
else
{
Debug.Assert(vectorFieldDictionary.Count < sMaxVectorFieldCount);
float[] vectorFieldArray = new float[vectorFieldDictionary.Count * 8];
int i = 0;
int count = 0;
foreach (KeyValuePair <GPUParticleVectorField, GPUParticleVectorField> it in vectorFieldDictionary)
{
GPUParticleVectorField vectorField = it.Value;
//Skip if inactive.
if (!vectorField.gameObject.activeInHierarchy)
{
continue;
}
float scale = Mathf.Max(Mathf.Max(vectorField.transform.localScale.x, vectorField.transform.localScale.y), vectorField.transform.localScale.z);
Vector3 vector = vectorField.RelativeVectorField ? vectorField.VectorRelative : vectorField.Vector;
vectorFieldArray[i++] = vectorField.transform.position.x;
vectorFieldArray[i++] = vectorField.transform.position.y;
vectorFieldArray[i++] = vectorField.transform.position.z;
vectorFieldArray[i++] = vector.x;
vectorFieldArray[i++] = vector.y;
vectorFieldArray[i++] = vector.z;
vectorFieldArray[i++] = scale * vectorField.Min;
vectorFieldArray[i++] = scale * vectorField.Max;
count++;
}
sGPUParticleVectorFieldBuffer.SetData(vectorFieldArray);
sComputeShader.SetInt("gVectorFieldCount", count);
sComputeShader.SetBuffer(sKernelUpdate, "gVectorFieldBuffer", sGPUParticleVectorFieldBuffer);
}
// SPHERE COLLIDER.
List <GPUParticleSphereCollider> sphereColliderList = GPUParticleSphereCollider.GetGPUParticleSphereColliderList();
if (sphereColliderList == null)
{
sComputeShader.SetInt("gSphereColliderCount", 0);
}
else
{
Debug.Assert(sphereColliderList.Count < sMaxSphereColliderCount);
// Reset result buffer.
int[] resetArray = new int[sphereColliderList.Count];
for (int i = 0; i < sphereColliderList.Count; ++i)
{
resetArray[i] = 0;
}
mSphereColliderResultBuffer.SetData(resetArray);
// Update sphere collider buffer.
float[] sphereColliderArray = new float[sphereColliderList.Count * 4];
int count = 0;
for (int i = 0, j = 0; i < sphereColliderList.Count; ++i)
{
GPUParticleSphereCollider sphereCollider = sphereColliderList[i];
//Skip if inactive.
if (!sphereCollider.gameObject.activeInHierarchy)
{
continue;
}
float scale = Mathf.Max(Mathf.Max(sphereCollider.transform.localScale.x, sphereCollider.transform.localScale.y), sphereCollider.transform.localScale.z);
sphereColliderArray[j++] = sphereCollider.transform.position.x;
sphereColliderArray[j++] = sphereCollider.transform.position.y;
sphereColliderArray[j++] = sphereCollider.transform.position.z;
sphereColliderArray[j++] = scale * sphereCollider.Radius;
count++;
}
sGPUParticleSphereColliderBuffer.SetData(sphereColliderArray);
sComputeShader.SetInt("gSphereColliderCount", count);
sComputeShader.SetBuffer(sKernelUpdate, "gSphereColliderBuffer", sGPUParticleSphereColliderBuffer);
sComputeShader.SetBuffer(sKernelUpdate, "gSphereColliderResultBufferWRITE", mSphereColliderResultBuffer);
}
// DISPATCH.
sComputeShader.Dispatch(sKernelUpdate, (int)Mathf.Ceil(mMaxParticleCount / 64.0f), 1, 1);
}
public static GameObject CreateAttractorWand(float power, bool rightHand)
{
//The wand is the parent object to all the parts.
GameObject WandGO = new GameObject("AttractorWand" + count++);
//The rod
//We set its transform.
GameObject RodGO = new GameObject("Rod" + count++);
RodGO.transform.parent = WandGO.transform;
RodGO.transform.localScale += Vector3.up * 8;
RodGO.transform.localScale *= 0.2f;
RodGO.transform.position += Vector3.forward * 0.2f;
TempVisuals(RodGO, PrimitiveType.Cylinder, Color.black);
//The tip
//We set its transform
GameObject TipGO = new GameObject("Tip" + count++);
TipGO.transform.parent = WandGO.transform;
TipGO.transform.position += Vector3.up * 2;
TipGO.transform.localScale *= 0.5f;
TipGO.transform.position += Vector3.forward * 0.2f;
TempVisuals(TipGO, PrimitiveType.Sphere, Color.red);
WandGO.transform.localScale *= 0.1f;
//We add the emitter to the tip.
GPUParticleSystem system = TipGO.AddComponent <GPUParticleSystem>();
Health.HEALTH_FACTOR = 1.0f;
GPUParticleDescriptor descriptor = new GPUParticleDescriptor();
descriptor.EmittFrequency = 500.0f;
descriptor.Lifetime = 5.0f;
descriptor.InheritVelocity = false;
GPUParticleDescriptor.LifetimePoints colorPoints = new GPUParticleDescriptor.LifetimePoints();
colorPoints.Add(new Vector4(0, 1, 0, 0));
colorPoints.Add(new Vector4(1, 1, 0, 0.1f));
colorPoints.Add(new Vector4(0, 1, 0, 0.2f));
colorPoints.Add(new Vector4(1, 0, 0, 0.3f));
colorPoints.Add(new Vector4(0, 1, 0, 0.4f));
colorPoints.Add(new Vector4(0, 0, 1, 0.5f));
colorPoints.Add(new Vector4(1, 0, 1, 0.6f));
colorPoints.Add(new Vector4(0, 1, 1, 0.7f));
colorPoints.Add(new Vector4(0, 1, 0, 0.8f));
colorPoints.Add(new Vector4(1, 1, 1, 0.9f));
colorPoints.Add(new Vector4(1, 1, 0, 1));
descriptor.ColorOverLifetime = colorPoints;
GPUParticleDescriptor.LifetimePoints haloPoints = new GPUParticleDescriptor.LifetimePoints();
haloPoints.Add(new Vector4(1, 0, 0, 0));
haloPoints.Add(new Vector4(0, 1, 0, 0.333f));
haloPoints.Add(new Vector4(0, 0, 1, 0.666f));
haloPoints.Add(new Vector4(0.5f, 0, 0.5f, 1));
descriptor.HaloOverLifetime = haloPoints;
GPUParticleDescriptor.LifetimePoints scalePoints = new GPUParticleDescriptor.LifetimePoints();
scalePoints.Add(new Vector4(0.005f, 0.005f, 0, 0));
scalePoints.Add(new Vector4(0.005f, 0.005f, 0, 1));
descriptor.ScaleOverLifetime = scalePoints;
GPUParticleDescriptor.LifetimePoints opacityPoints = new GPUParticleDescriptor.LifetimePoints();
opacityPoints.Add(new Vector4(0.0f, 0, 0, 0));
opacityPoints.Add(new Vector4(1.0f, 0, 0, 0.1f));
opacityPoints.Add(new Vector4(1.0f, 0, 0, 0.8f));
opacityPoints.Add(new Vector4(0.0f, 0, 0, 1.0f));
descriptor.OpacityOverLifetime = opacityPoints;
descriptor.EmittMesh = TipGO.GetComponent <MeshFilter>().mesh;
system.ParticleDescriptor = descriptor;
//We add an attractor to the tip.
GPUParticleAttractor attractor = TipGO.AddComponent <GPUParticleAttractor>();
attractor.Power = 1;
//We add vector field to the tip.
GPUParticleVectorField vectorField = TipGO.AddComponent <GPUParticleVectorField>();
vectorField.Max = 0.3f;
WandGO.transform.Rotate(90, 0, 0);
AttractorWand wand = WandGO.AddComponent <AttractorWand>();
wand.power = power;
wand.rightHand = rightHand;
wand.system = system;
wand.attractor = attractor;
wand.vectorField = vectorField;
GameObject hand = new GameObject(rightHand ? "Right" : "Left" + "hand");
WandGO.transform.parent = hand.transform;
hand.AddComponent <MirrorHandMovement>().rightHand = rightHand;
return(hand);
}