/// <summary>
/// Adds the object to the rendering system.
/// </summary>
/// <param name="o">Object to add.</param>
/// <returns>Display object created from the object.</returns>
public LineDisplayObjectBase Add(object o)
{
//Create the correct kind of display object for this line drawer.
Type displayType;
if (displayTypes.TryGetValue(o.GetType(), out displayType))
{
#if !WINDOWS
LineDisplayObjectBase objectAdded = (LineDisplayObjectBase)displayType.GetConstructor(
new Type[] { o.GetType(), typeof(LineDrawer) })
.Invoke(new object[] { o, this });
#else
var objectAdded = (LineDisplayObjectBase)Activator.CreateInstance(displayType, new[] { o, this });
#endif
displayMapping.Add(o, objectAdded);
return(objectAdded);
}
if (o is SolverGroup)
{
//Solver groups are special. If no special type-specific display object
//has been registered for a solver group, add every child individually.
foreach (SolverUpdateable item in (o as SolverGroup).SolverUpdateables)
{
LineDisplayObjectBase objectAdded = Add(item);
if (objectAdded != null)
{
objectAdded.IsDrawing = item.IsActiveInSolver; //Match the initial activity of the item.
}
}
return(null);
}
return(null); //Don't have this type registered; don't know what to do with it.
}
protected override void LoadContent()
{
dataFont = Content.Load <SpriteFont>("DataFont");
tinyFont = Content.Load <SpriteFont>("TinyFont");
controlsMenu = Content.Load <Texture2D>("bepuphysicscontrols");
IsFixedTimeStep = false;
LineDrawer = new BasicEffect(GraphicsDevice);
UIDrawer = new SpriteBatch(GraphicsDevice);
DataTextDrawer = new TextDrawer(UIDrawer, dataFont, Color.White);
TinyTextDrawer = new TextDrawer(UIDrawer, tinyFont, Color.White);
Mouse.SetPosition(200, 200);
ModelDrawer.Clear();
ConstraintDrawer.Clear();
if (ServerSimulation != null)
{
ServerSimulation.CleanUp();
}
Type SimulationType = typeof(WorldSimulator);
Globals.world = (WorldSimulator)Activator.CreateInstance(SimulationType, new object[] { this });
ServerSimulation = Globals.world;
foreach (Entity e in Globals.space.Entities)
{
if ((string)e.Tag != "noDisplayObject")
{
ModelDrawer.Add(e);
}
else
{
e.Tag = null;
}
}
for (int i = 0; i < Globals.space.Solver.SolverUpdateables.Count; i++)
{
//Add the solver updateable and match up the activity setting.
LineDisplayObjectBase objectAdded = ConstraintDrawer.Add(Globals.space.Solver.SolverUpdateables[i]);
if (objectAdded != null)
{
objectAdded.IsDrawing = Globals.space.Solver.SolverUpdateables[i].IsActive;
}
}
GC.Collect();
}
public StandardDemo(DemosGame game)
: base(game)
{
freeCameraControlScheme = new FreeCameraControlScheme(10, game.Camera, game);
//Creates the player character (C).
character = new CharacterControllerInput(Space, game.Camera, game);
//Creates the drivable vehicle (V).
var wheelModel = game.Content.Load <Model>("carWheel");
var wheelTexture = game.Content.Load <Texture2D>("wheel");
whitePixel = game.Content.Load <Texture2D>("whitePixel");
vehicle = new VehicleInput(new Vector3(10000, 0, 0), Space, game.Camera, game, game.ModelDrawer, wheelModel, wheelTexture);
Space.ForceUpdater.Gravity = new Vector3(0, -9.81f, 0f); //If left unset, the default value is (0,0,0).
//Create the tossable ball.
kapow = new Sphere(new Vector3(11000, 0, 0), .6f, 20);
kapowMaker = new Explosion(Vector3.Zero, 400, 15, Space);
//Create the right-click grab spring.
grabber = new MotorizedGrabSpring();
grabberGraphic = game.ConstraintDrawer.Add(grabber);
grabberGraphic.IsDrawing = false;
Space.Add(grabber);
Space.Add(kapow);
//IMPORTANT PERFORMANCE NOTE:
// BEPUphysics uses an iterative system to solve constraints. You can tell it to do more or less iterations.
// Less iterations is faster; more iterations makes the result more accurate.
//
// The amount of iterations needed for a simulation varies. The "Wall" and "Pyramid" simulations are each fairly
// solver intensive, but as few as 4 iterations can be used with acceptable results.
// The "Jenga" simulation usually needs a few more iterations for stability; 7-9 is a good minimum.
//
// The Dogbot demo shows how accuracy can smoothly increase with more iterations.
// With very few iterations (1-3), it has slightly jaggier movement, as if the parts used to construct it were a little cheap.
// As you give it a few more iterations, the motors and constraints get more and more robust.
//
// Many simulations can work perfectly fine with very few iterations,
// and using a low number of iterations can substantially improve performance.
//
// To change the number of iterations used, uncomment and change the following line (10 iterations is the default):
//Space.Solver.IterationLimit = 10;
rayCastFilter = RayCastFilter;
}
/// <summary>
/// Manages the switch to a new physics engine simulation.
/// </summary>
/// <param name="sim">Index of the simulation to switch to.</param>
public void SwitchSimulation(int sim)
{
currentSimulationIndex = sim;
//Clear out any old rendering stuff.
ModelDrawer.Clear();
ConstraintDrawer.Clear();
//Tell the previous simulation it's done.
if (currentSimulation != null)
{
currentSimulation.CleanUp();
}
//Create the new demo.
Type demoType = demoTypes[currentSimulationIndex - 1];
#if !WINDOWS
currentSimulation = (Demo)demoType.GetConstructor(new[] { typeof(DemosGame) }).Invoke(new object[] { this });
#else
currentSimulation = (Demo)Activator.CreateInstance(demoType, new object[] { this });
#endif
#region DisplayObject creation
foreach (Entity e in currentSimulation.Space.Entities)
{
if ((string)e.Tag != "noDisplayObject")
{
ModelDrawer.Add(e);
}
else //Remove the now unnecessary tag.
{
e.Tag = null;
}
}
for (int i = 0; i < currentSimulation.Space.Solver.SolverUpdateables.Count; i++)
{
//Add the solver updateable and match up the activity setting.
LineDisplayObjectBase objectAdded = ConstraintDrawer.Add(currentSimulation.Space.Solver.SolverUpdateables[i]);
if (objectAdded != null)
{
objectAdded.IsDrawing = currentSimulation.Space.Solver.SolverUpdateables[i].IsActive;
}
}
#endregion
GC.Collect();
}