/// <summary>
/// Updates the Engine with a change in time.
/// This call will block all access to the engine while it is running.
/// A complete call to this method is also known as a timestep.
/// </summary>
/// <param name="dt">The change in time since the last call to this method. (In Seconds)</param>
public void Update(Scalar dt)
{
if (dt < 0)
{
throw new ArgumentOutOfRangeException("dt");
}
CheckState();
rwLock.EnterWrite();
TimeStep step = new TimeStep(dt, updateCount++);
inUpdate = true;
try
{
RemoveExpired();
AddPending();
if (logicsNeedSorting)
{
logicsNeedSorting = false;
logics.Sort(logicComparer);
}
UpdateTime(step);
solver.Solve(step);
OnPositionChanged();
}
finally
{
inUpdate = false;
rwLock.ExitWrite();
}
}
public void FixedUpdate()
{
// Solve collisions only for obbs (not particles)
collisionSolver.Solve();
// Update particle system
particleSystem.Update(Constants.TimeStepSeconds);
// Solve collisions only for particles
collisionSolver.Solve(ref particleSystem.Particles);
// Do simulation
fluidSim.Calculate(ref particleSystem.Particles, lGravity, Constants.TimeStepSeconds);
if (fillTypeIndex == 1)
{
renderer.GetComponent <MeshRenderer>().enabled = true;
Mesh mesh = generator.GenerateMesh(fluidSim.m_grid.getFluidMapCount(), Constants.CellSpace / 3);
filter.mesh = mesh;
}
else if (fillTypeIndex == 0)
{
renderer.GetComponent <MeshRenderer>().enabled = false;
// align Unity Particles with simulated Particles ...
int d = particleSystem.Particles.Count - ps.particleCount;
if (d > 0)
{
ps.Emit(d);
}
ps.GetParticles(particles);
mParticle p;
for (int i = 0; i < particleSystem.Particles.Count; i++)
{
p = particleSystem.Particles[i];
particles[i].position = new Vector3(p.Position.x, p.Position.y, 0);
particles[i].remainingLifetime = 1f;
}
ps.SetParticles(particles, particleSystem.MaxParticles);
}
else
{
//update particle buffer
smallParticle[] particleArray = new smallParticle[particleSystem.Particles.Count];
for (int i = 0; i < particleSystem.Particles.Count; i++)
{
particleArray[i] = particleSystem.Particles[i].toE();
}
particleBuffer.SetData(particleArray);
// Bind the ComputeBuffer to the shader and the compute shader
computeShader.SetBuffer(mComputeShaderKernelID, "particleBuffer", particleBuffer);
computeShader.SetInt("particle_length", particleSystem.Particles.Count);
int mWarpCount = Mathf.CeilToInt((float)fluidSim.m_grid.GPUVoxel / Constants.WARP_SIZE);
computeShader.Dispatch(mComputeShaderKernelID, mWarpCount, 1, 1);
grid[] gridArray = new grid[fluidSim.m_grid.GPUVoxel];
gridBuffer.GetData(gridArray);
int[] field = new int[gridArray.GetLength(0)];
for (int i = 0; i < gridArray.GetLength(0); i++)
{
if (gridArray[i].value > 0)
{
field[i] = 1;
}
}
int[,] f = Helper.Make2DArray <int>(field, fluidSim.m_grid.Width * Constants.resolution + 1, fluidSim.m_grid.Height * Constants.resolution + 1);
renderer.GetComponent <MeshRenderer>().enabled = true;
Mesh mesh = generator.GenerateMesh(f, Constants.CellSpace / Constants.resolution);
mesh = mattatz.MeshSmoothingSystem.MeshSmoothing.LaplacianFilter(mesh);
filter.mesh = mesh;
}
}