public void UpdateWorld(float DeltaTime)
{
//Poll User Input from the server window
ProcessInput(ApplicationWindow.Focused, DeltaTime);
//Manage all client connections and their player characters
ConnectionManager.CheckClients(DeltaTime);
ConnectionManager.CleanDeadClients(World);
ConnectionManager.AddNewClients(World);
ConnectionManager.UpdateClientPositions(World);
ConnectionManager.RespawnDeadPlayers(World);
//Track current inhabitants of the PVP Battle Arena, then process the players PVP attacks
List <CharacterData> InGameCharacters = ClientSubsetFinder.GetInGameCharacters();
PVPBattleArena.UpdateArenaInhabitants(InGameCharacters);
PVPBattleArena.AlertTravellers();
ConnectionManager.PerformPlayerAttacks(World);
//Update the packet queue, transmitting all messages to the client connections
PacketQueue.UpdateQueue(DeltaTime, TransmitPackets);
//Update the physics simulation
World.Timestep(DeltaTime, ThreadDispatcher);
TimeSamples.RecordFrame(World);
}
public static void Test()
{
const int width = 32;
const int height = 32;
const int length = 32;
SimulationSetup.BuildLattice(
new RegularGridWithKinematicBaseBuilder(new Vector3(1), new Vector3()),
new BallSocketConstraintBuilder(),
width, height, length, out var simulation, out var bodyHandles, out var constraintHandles);
var threadDispatcher = new SimpleThreadDispatcher(8);
const float inverseDt = 60f;
const float dt = 1 / inverseDt;
const int iterationCount = 8;
const int frameCount = 128;
simulation.Solver.IterationCount = iterationCount;
simulation.PoseIntegrator.Gravity = new Vector3(0, -10, 0);
var samples = new SimulationTimeSamples(frameCount);
for (int frameIndex = 0; frameIndex < frameCount; ++frameIndex)
{
var energyBefore = TestHelpers.GetBodyEnergyHeuristic(simulation.Bodies);
//simulation.Timestep(dt);
simulation.Timestep(dt, threadDispatcher);
samples.RecordFrame(simulation);
var energyAfter = TestHelpers.GetBodyEnergyHeuristic(simulation.Bodies);
int sampledBodyIndex = width;
var samplePose = simulation.Bodies.ActiveSet.Poses[sampledBodyIndex];
var sampleVelocity = simulation.Bodies.ActiveSet.Velocities[sampledBodyIndex];
//for (int i =0; i < simulation.Bodies.BodyCount; ++i)
//{
// simulation.Bodies.GetPose(simulation.Bodies.IndexToHandle[i], out var pose);
// simulation.Bodies.GetVelocity(simulation.Bodies.IndexToHandle[i], out var velocity);
// Console.WriteLine($"Sample {i} position: {pose.Position}, velocity: {velocity.Linear}");
//}
Console.WriteLine($"Sample {sampledBodyIndex} position: {samplePose.Position}, velocity: {sampleVelocity.Linear}");
Console.WriteLine($"Body energy {frameIndex}: {energyAfter}, delta: {energyAfter - energyBefore}");
}
var multiplier = 1e3 / frameCount;
Console.WriteLine($"Simulation time (ms): {multiplier * samples.Simulation.ComputeStats().Total}");
Console.WriteLine($"Body opt time (ms): {multiplier * samples.BodyOptimizer.ComputeStats().Total}");
Console.WriteLine($"Constraint opt time (ms): {multiplier * samples.ConstraintOptimizer.ComputeStats().Total}");
Console.WriteLine($"Batch compress time (ms): {multiplier * samples.BatchCompressor.ComputeStats().Total}");
Console.WriteLine($"Pose integrate time (ms): {multiplier * samples.PoseIntegrator.ComputeStats().Total}");
Console.WriteLine($"Solve time (ms): {multiplier * samples.Solver.ComputeStats().Total}");
threadDispatcher.Dispose();
simulation.BufferPool.Clear();
}
public static SimulationTimeSamples Solve <TBodyBuilder, TConstraintBuilder, TConstraint>(TBodyBuilder bodyBuilder, TConstraintBuilder constraintBuilder,
int width, int height, int length, int frameCount, int threadCount, IThreadDispatcher initializationThreadPool, IThreadDispatcher threadDispatcher)
where TBodyBuilder : IBodyBuilder where TConstraintBuilder : IConstraintBuilder where TConstraint : IConstraintDescription <TConstraint>
{
//const int bodyCount = 8;
//SimulationSetup.BuildStackOfBodiesOnGround(bodyCount, false, true, out var bodies, out var solver, out var graph, out var bodyHandles, out var constraintHandles);
GC.Collect(3, GCCollectionMode.Forced, true);
SimulationSetup.BuildLattice(
bodyBuilder, constraintBuilder,
width, height, length, out var simulation, out var bodyHandles, out var constraintHandles);
SimulationScrambling.ScrambleBodies(simulation);
SimulationScrambling.ScrambleConstraints(simulation.Solver);
SimulationScrambling.ScrambleBodyConstraintLists(simulation);
SimulationScrambling.AddRemoveChurn <TConstraint>(simulation, bodyHandles.Length * 2, bodyHandles, constraintHandles);
const int batchCompressionIterations = 1000;
simulation.SolverBatchCompressor.TargetCandidateFraction = .005f;
simulation.SolverBatchCompressor.MaximumCompressionFraction = 0.0005f;
for (int i = 0; i < batchCompressionIterations; ++i)
{
simulation.SolverBatchCompressor.Compress(simulation.BufferPool, initializationThreadPool);
}
//Attempt cache optimization.
int bodyOptimizationIterations = bodyHandles.Length / 4;
simulation.BodyLayoutOptimizer.OptimizationFraction = 0.005f;
for (int i = 0; i < bodyOptimizationIterations; ++i)
{
simulation.BodyLayoutOptimizer.IncrementalOptimize(simulation.BufferPool, initializationThreadPool);
}
simulation.ConstraintLayoutOptimizer.OptimizationFraction = 0.044f;
int constraintOptimizationIterations = 1024;
for (int i = 0; i < constraintOptimizationIterations; ++i)
{
simulation.ConstraintLayoutOptimizer.Update(simulation.BufferPool, initializationThreadPool);
}
var simulationTimeSamples = new SimulationTimeSamples(frameCount);
const float dt = 1 / 60f;
const int iterationCount = 8;
simulation.Solver.IterationCount = iterationCount;
for (int frameIndex = 0; frameIndex < frameCount; ++frameIndex)
{
CacheBlaster.Blast();
simulation.Timestep(dt, threadDispatcher);
simulationTimeSamples.RecordFrame(simulation);
}
simulation.Dispose();
simulation.BufferPool.Clear();
return(simulationTimeSamples);
}
