private void PhysicsWorker()
{
while (NetworkWorkerThread.IsAlive)
{
if (nextPhysicsUpdate < DateTime.Now)
{
//We need to wait for a login packet to initialize the physics subsystem
if (World != null && engine == null)
{
// 50 ms / update for 20 ticks per second
engine = new PhysicsEngine(World.World, Block.PhysicsProvider, 50);
engine.AddEntity(this);
}
nextPhysicsUpdate = DateTime.Now.AddMilliseconds(50);
try
{
engine.Update();
}
catch (Exception)
{
// Sometimes the world hasn't loaded yet, so the Phyics update can't properly read blocks and
// throws an exception.
}
}
else
{
var sleepTime = (nextPhysicsUpdate - DateTime.Now).Milliseconds;
if (sleepTime > 0)
{
Thread.Sleep(sleepTime);
}
}
}
}
public void TestAdjacentFall()
{
// Tests an entity that falls alongside a wall
var repository = GetBlockRepository();
var world = new TrueCraft.Core.World.World("default", new FlatlandGenerator());
var physics = new PhysicsEngine(world, repository);
var entity = new TestEntity();
entity.Position = new Vector3(0, 10, 0);
entity.AccelerationDueToGravity = 1;
physics.AddEntity(entity);
// Create a wall
for (int y = 0; y < 12; y++)
{
world.SetBlockID(new Coordinates3D(1, y, 0), StoneBlock.BlockID);
}
// Test
physics.Update(TimeSpan.FromSeconds(1));
Assert.AreEqual(9, entity.Position.Y);
Assert.IsFalse(entity.CollisionOccured);
}
public void SpawnEntity(IEntity entity)
{
if (entity.Despawned)
{
return;
}
entity.SpawnTime = DateTime.UtcNow;
entity.EntityManager = this;
entity.World = World;
entity.EntityId = NextEntityID++;
entity.PropertyChanged -= HandlePropertyChanged;
entity.PropertyChanged += HandlePropertyChanged;
lock (_lock) Entities.Add(entity);
foreach (var clientEntity in GetEntitiesInRange(entity, 8)) // Note: 8 is pretty arbitrary here
{
if (clientEntity != entity && clientEntity is PlayerEntity)
{
var client = (RemoteClient)GetClientForEntity((PlayerEntity)clientEntity);
SendEntityToClient(client, entity);
}
}
if (entity is IPhysicsEntity)
{
PhysicsEngine.AddEntity(entity as IPhysicsEntity);
}
}
public void TestExtremeTerrainCollision()
{
var repository = GetBlockRepository();
var world = new TrueCraft.Core.World.World("default", new FlatlandGenerator());
var physics = new PhysicsEngine(world, repository);
var entity = new TestEntity();
entity.Position = new Vector3(0, 4, 0);
entity.AccelerationDueToGravity = 10;
physics.AddEntity(entity);
// Test
physics.Update(TimeSpan.FromSeconds(1));
Assert.AreEqual(4, entity.Position.Y);
}
public void TestDrag()
{
var repository = GetBlockRepository();
var world = new TrueCraft.Core.World.World("default", new FlatlandGenerator());
var physics = new PhysicsEngine(world, repository);
var entity = new TestEntity();
entity.Position = new Vector3(0, 100, 0);
entity.AccelerationDueToGravity = 0;
entity.Drag = 0.5f;
entity.Velocity = Vector3.Down * 2;
physics.AddEntity(entity);
// Test
physics.Update(TimeSpan.FromSeconds(1));
Assert.AreEqual(99, entity.Position.Y);
}
public void TestHorizontalCollision()
{
var repository = GetBlockRepository();
var world = new TrueCraft.Core.World.World("default", new FlatlandGenerator());
var physics = new PhysicsEngine(world, repository);
var entity = new TestEntity();
entity.Position = new Vector3(0, 5, 0);
entity.AccelerationDueToGravity = 0;
entity.Drag = 0;
entity.Velocity = new Vector3(1, 0, 0);
physics.AddEntity(entity);
world.SetBlockID(new Coordinates3D(1, 5, 0), StoneBlock.BlockID);
// Test
physics.Update(TimeSpan.FromSeconds(1));
Assert.AreEqual(0, entity.Position.X);
}
public void TestCollisionPoint()
{
var repository = GetBlockRepository();
var world = new TrueCraft.World.World("default", new FlatlandGenerator());
var physics = new PhysicsEngine(world, repository);
var entity = new TestEntity();
entity.Position = new Vector3(0, 5, 0);
entity.AccelerationDueToGravity = 1;
entity.Drag = 0;
physics.AddEntity(entity);
world.SetBlockId(new Coordinates3D(0, 4, 0), StoneBlock.BlockId);
// Test
physics.Update(TimeSpan.FromSeconds(1));
Assert.AreEqual(new Vector3(0, 4, 0), entity.CollisionPoint);
}
public override void Initialize()
{
if (Entity != null)
{
GameObjectInfo info = new GameObjectInfo()
{
ID = Manager.Owner.ID,
ObjectType = Manager.Owner.GetType()
};
Entity.Tag = info;
Entity.CollisionInformation.Tag = info;
}
if (Entity != null)
{
PhysicsEngine.AddEntity(Entity);
}
base.Initialize();
}