public BoxStackSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
// Add basic force effects.
Simulation.ForceEffects.Add(new Gravity());
Simulation.ForceEffects.Add(new Damping());
// Add a ground plane.
RigidBody groundPlane = new RigidBody(new PlaneShape(Vector3F.UnitY, 0))
{
Name = "GroundPlane", // Names are not required but helpful for debugging.
MotionType = MotionType.Static,
};
Simulation.RigidBodies.Add(groundPlane);
// ----- Add a stack of boxes.
const int numberOfBoxes = 5;
const float boxSize = 0.8f;
BoxShape boxShape = new BoxShape(boxSize, boxSize, boxSize);
// Optional: Use a small overlap between boxes to improve the stability.
float overlap = Simulation.Settings.Constraints.AllowedPenetration * 0.5f;
Vector3F position = new Vector3F(0, boxSize / 2 - overlap, 0);
for (int i = 0; i < numberOfBoxes; i++)
{
RigidBody box = new RigidBody(boxShape)
{
Name = "Box" + i,
Pose = new Pose(position),
};
Simulation.RigidBodies.Add(box);
position.Y += boxSize - overlap;
}
}
protected virtual void CloneCore(RigidBody source)
{
// Material and mass properties
Material = source.Material;
MassFrame = source.MassFrame.Clone();
AutoUpdateMass = source.AutoUpdateMass;
LockRotationX = source.LockRotationX;
LockRotationY = source.LockRotationY;
LockRotationZ = source.LockRotationZ;
// Geometric object properties
Pose = source.Pose;
Shape = source.Shape.Clone();
Scale = source.Scale;
// Other properties
CollisionObject.CollisionGroup = source.CollisionObject.CollisionGroup;
CollisionObject.Type = source.CollisionObject.Type;
CollisionObject.Enabled = source.CollisionObject.Enabled;
CollisionResponseEnabled = source.CollisionResponseEnabled;
MotionType = source.MotionType;
Name = source.Name;
UserData = source.UserData;
BuoyancyData = source.BuoyancyData;
CcdEnabled = source.CcdEnabled;
LinearVelocity = source.LinearVelocity;
AngularVelocity = source.AngularVelocity;
CanSleep = source.CanSleep;
}
public RibbonSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
GraphicsScreen.DrawReticle = true;
GameObjectService.Objects.Add(new GrabObject(Services));
// Load a sphere model.
_modelNode = ContentManager.Load<ModelNode>("Particles/Sphere").Clone();
GraphicsScreen.Scene.Children.Add(_modelNode);
// Add gravity and damping to the physics simulation.
Simulation.ForceEffects.Add(new Gravity());
Simulation.ForceEffects.Add(new Damping());
// Create a rigid body for the sphere.
_rigidBody = new RigidBody(new SphereShape(0.5f))
{
Pose = new Pose(new Vector3F(-3, 0, 0)),
LinearVelocity = new Vector3F(10, 10, -3f),
};
Simulation.RigidBodies.Add(_rigidBody);
_particleSystem = RibbonEffect.Create(ContentManager);
ParticleSystemService.ParticleSystems.Add(_particleSystem);
_particleSystemNode = new ParticleSystemNode(_particleSystem);
GraphicsScreen.Scene.Children.Add(_particleSystemNode);
}
public SphereStackSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
// Add basic force effects.
Simulation.ForceEffects.Add(new Gravity());
Simulation.ForceEffects.Add(new Damping());
// Add a ground plane.
RigidBody groundPlane = new RigidBody(new PlaneShape(Vector3F.UnitY, 0))
{
Name = "GroundPlane", // Names are not required but helpful for debugging.
MotionType = MotionType.Static,
};
Simulation.RigidBodies.Add(groundPlane);
// ----- Add a stack of spheres.
const int numberOfSpheres = 10;
const float sphereRadius = 0.4f;
Shape sphereShape = new SphereShape(sphereRadius);
// Optional: Use a small overlap between spheres to improve the stability.
float overlap = Simulation.Settings.Constraints.AllowedPenetration * 0.5f;
Vector3F position = new Vector3F(0, sphereRadius - overlap, 0);
for (int i = 0; i < numberOfSpheres; i++)
{
RigidBody sphere = new RigidBody(sphereShape)
{
Name = "Sphere" + i,
Pose = new Pose(position),
};
Simulation.RigidBodies.Add(sphere);
position.Y += 2 * sphereRadius - overlap;
}
}
// OnLoad() is called when the GameObject is added to the IGameObjectService.
protected override void OnLoad()
{
// Load model.
var contentManager = _services.GetInstance<ContentManager>();
_modelNode = contentManager.Load<ModelNode>("Ground/Ground").Clone();
_modelNode.ScaleLocal = new Vector3F(0.5f);
foreach (var node in _modelNode.GetSubtree())
{
// Disable the CastsShadows flag for ground meshes. No need to render
// this model into the shadow map. (This also avoids any shadow acne on
// the ground model.)
node.CastsShadows = false;
// If models will never move, set the IsStatic flag. This gives the engine
// more room for optimizations. Additionally, some effects, like certain
// decals, may only affect static geometry.
node.IsStatic = true;
}
// Add model node to scene graph.
var scene = _services.GetInstance<IScene>();
scene.Children.Add(_modelNode);
// Create rigid body.
_rigidBody = new RigidBody(new PlaneShape(Vector3F.UnitY, 0))
{
MotionType = MotionType.Static,
};
// Add rigid body to the physics simulation.
var simulation = _services.GetInstance<Simulation>();
simulation.RigidBodies.Add(_rigidBody);
}
private void InitializeSimulation(Simulation simulation, Vector3F offset)
{
// Add default force effects.
simulation.ForceEffects.Add(new Gravity());
simulation.ForceEffects.Add(new Damping());
// Add a ground plane.
RigidBody groundPlane = new RigidBody(new PlaneShape(Vector3F.UnitY, 0))
{
Name = "GroundPlane",
MotionType = MotionType.Static,
};
simulation.RigidBodies.Add(groundPlane);
// Add a stack of boxes.
const float boxSize = 0.8f;
float overlap = simulation.Settings.Constraints.AllowedPenetration * 0.5f;
float yPosition = boxSize / 2 - overlap;
BoxShape boxShape = new BoxShape(boxSize, boxSize, boxSize);
for (int i = 0; i < 15; i++)
{
RigidBody stackBox = new RigidBody(boxShape)
{
Name = "StackBox" + i,
Pose = new Pose(new Vector3F(0, yPosition, 0) + offset),
};
simulation.RigidBodies.Add(stackBox);
yPosition += boxSize - overlap;
}
}
public ConvexHullSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
// Add basic force effects.
Simulation.ForceEffects.Add(new Gravity());
Simulation.ForceEffects.Add(new Damping());
// Add a ground plane.
RigidBody groundPlane = new RigidBody(new PlaneShape(Vector3F.UnitY, 0))
{
Name = "GroundPlane", // Names are not required but helpful for debugging.
MotionType = MotionType.Static,
};
Simulation.RigidBodies.Add(groundPlane);
// Load model and add it to the graphics scene.
_saucerModelNode = ContentManager.Load<ModelNode>("Saucer2/saucer").Clone();
GraphicsScreen.Scene.Children.Add(_saucerModelNode);
// Create rigid body for this model.
// The tag contains the collision shape (created in the content processor).
Shape saucerShape = (Shape)_saucerModelNode.UserData;
_saucerBody = new RigidBody(saucerShape)
{
Pose = new Pose(new Vector3F(0, 2, 0), RandomHelper.Random.NextQuaternionF())
};
Simulation.RigidBodies.Add(_saucerBody);
}
// OnLoad() is called when the GameObject is added to the IGameObjectService.
protected override void OnLoad()
{
// ----- Create prototype of a lava ball:
// Use a sphere for physics simulation.
_bodyPrototype = new RigidBody(new SphereShape(0.5f));
// Load the graphics model.
var content = _services.GetInstance<ContentManager>();
_modelPrototype = content.Load<ModelNode>("LavaBall/LavaBall").Clone();
// Attach a point light to the model. The light projects the glowing lava
// veins (cube map texture) onto the environment.
_pointLight = new PointLight
{
Color = new Vector3F(1, 1, 1),
DiffuseIntensity = 2,
SpecularIntensity = 2,
Range = 1.5f,
Attenuation = 0.5f,
Texture = content.Load<TextureCube>("LavaBall/LavaCubeMap"),
};
var pointLightNode = new LightNode(_pointLight);
_modelPrototype.Children.Add(pointLightNode);
// Get the emissive color binding of the material because the emissive color
// will be animated.
// The model contains one mesh node with a single material.
var meshNode = (MeshNode)_modelPrototype.Children[0];
var mesh = meshNode.Mesh;
var material = mesh.Materials[0];
// The material contains several effect bindings. The "EmissiveColor" is applied
// in the "Material" pass.
// (For reference see material definition file: Samples\Media\LavaBall\Lava.drmat)
_emissiveColorBinding = (ConstParameterBinding<Vector3>)material["Material"].ParameterBindings["EmissiveColor"];
// Use the animation service to animate glow intensity of the lava.
var animationService = _services.GetInstance<IAnimationService>();
// Create an AnimatableProperty<float>, which stores the animation value.
_glowIntensity = new AnimatableProperty<float>();
// Create sine animation and play the animation back-and-forth.
var animation = new SingleFromToByAnimation
{
From = 0.3f,
To = 3.0f,
Duration = TimeSpan.FromSeconds(1),
EasingFunction = new SineEase { Mode = EasingMode.EaseInOut },
};
var clip = new AnimationClip<float>
{
Animation = animation,
Duration = TimeSpan.MaxValue,
LoopBehavior = LoopBehavior.Oscillate
};
animationService.StartAnimation(clip, _glowIntensity).AutoRecycle();
}
// OnUnload() is called when the GameObject is removed from the IGameObjectService.
protected override void OnUnload()
{
// Remove model and rigid body.
_modelNode.Parent.Children.Remove(_modelNode);
_modelNode.Dispose(false);
_modelNode = null;
_rigidBody.Simulation.RigidBodies.Remove(_rigidBody);
_rigidBody = null;
}
private void CreateParticleSystem()
{
// Load a sphere model.
var modelNode = ContentManager.Load<ModelNode>("Particles/Sphere");
var meshNode = (MeshNode)modelNode.Children[0];
// Add gravity and damping to the physics simulation.
Simulation.ForceEffects.Add(new Gravity());
Simulation.ForceEffects.Add(new Damping());
// Create two instances of the sphere model.
_meshNode0 = meshNode.Clone();
GraphicsScreen.Scene.Children.Add(_meshNode0);
_meshNode1 = meshNode.Clone();
GraphicsScreen.Scene.Children.Add(_meshNode1);
// Create a rigid body for the left sphere.
_rigidBody0 = new RigidBody(new SphereShape(0.5f))
{
Pose = new Pose(new Vector3F(-3, 4, 0)),
};
Simulation.RigidBodies.Add(_rigidBody0);
// Create a rigid body for the right sphere. (Sharing the same shape, mass and material.)
_rigidBody1 = new RigidBody(_rigidBody0.Shape, _rigidBody0.MassFrame, _rigidBody0.Material)
{
Pose = new Pose(new Vector3F(3, 4, 0)),
};
Simulation.RigidBodies.Add(_rigidBody1);
// Extract basic triangle mesh from the sphere model.
var triangleMesh = meshNode.Mesh.Submeshes[0].ToTriangleMesh();
// Create a particle system for the left ball. This particle system uses
// ReferenceFrame == ParticleReferenceFrame.World - which is the default for all
// particle systems. Particles are all relative to world space. The particle system pose
// determines the start positions and direction (when the StartPositionEffector and
// StartDirectionEffector are in use). Particles do not move with the particle system.
_particleSystem0 = GlowingMeshEffect.Create(triangleMesh, ContentManager);
_particleSystem0.ReferenceFrame = ParticleReferenceFrame.World;
ParticleSystemService.ParticleSystems.Add(_particleSystem0);
_particleSystemNode0 = new ParticleSystemNode(_particleSystem0);
_meshNode0.Children = new SceneNodeCollection { _particleSystemNode0 };
// Create a particle system for the right ball. This particle system uses
// ReferenceFrame == ParticleReferenceFrame.Local. Particles are all relative to the
// particle system pose. Particles move with the particle system.
_particleSystem1 = GlowingMeshEffect.Create(triangleMesh, ContentManager);
_particleSystem1.ReferenceFrame = ParticleReferenceFrame.Local;
ParticleSystemService.ParticleSystems.Add(_particleSystem1);
_particleSystemNode1 = new ParticleSystemNode(_particleSystem1);
_meshNode1.Children = new SceneNodeCollection { _particleSystemNode1 };
}
internal RigidBody(RigidBodyDescriptor descriptor)
{
WrappedRigidBody = new DR.RigidBody {AutoUpdateMass = true, MotionType = descriptor.MotionType.ToDigitalRune()};
Configurator = new RigidBodyConfigurator(this);
FixtureFactory = new RigidBodyFixtureFactory(this);
Forces = new RigidBodyForces(this);
Velocity = new RigidBodyVelocity(this);
MassFrame = new RigidBodyMassFrame(this);
Descriptor = descriptor;
}
public LockRotationSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
// Add basic force effects.
Simulation.ForceEffects.Add(new Gravity());
Simulation.ForceEffects.Add(new Damping());
// Add a ground plane.
RigidBody groundPlane = new RigidBody(new PlaneShape(Vector3F.UnitY, 0))
{
Name = "GroundPlane", // Names are not required but helpful for debugging.
MotionType = MotionType.Static,
};
Simulation.RigidBodies.Add(groundPlane);
// Next, we add boxes and capsules in random positions and orientations.
// For all bodies the flags LockRotationX/Y/Z are set. This will prevent all
// rotation that would be caused by forces. (It is still allowed to manually
// change the rotation or to set an angular velocity.)
BoxShape boxShape = new BoxShape(0.5f, 0.8f, 1.2f);
for (int i = 0; i < 10; i++)
{
Vector3F position = RandomHelper.Random.NextVector3F(-10, 10);
position.Y = 5;
QuaternionF orientation = RandomHelper.Random.NextQuaternionF();
RigidBody body = new RigidBody(boxShape)
{
Pose = new Pose(position, orientation),
LockRotationX = true,
LockRotationY = true,
LockRotationZ = true,
};
Simulation.RigidBodies.Add(body);
}
CapsuleShape capsuleShape = new CapsuleShape(0.3f, 1.2f);
for (int i = 0; i < 10; i++)
{
Vector3F randomPosition = RandomHelper.Random.NextVector3F(-10, 10);
randomPosition.Y = 5;
QuaternionF randomOrientation = RandomHelper.Random.NextQuaternionF();
RigidBody body = new RigidBody(capsuleShape)
{
Pose = new Pose(randomPosition, randomOrientation),
LockRotationX = true,
LockRotationY = true,
LockRotationZ = true,
};
Simulation.RigidBodies.Add(body);
}
}
// Creates a new rigid body and adds it to the simulation.
private void AddBody(string name, Pose pose, Shape shape, MotionType motionType)
{
var rigidBody = new RigidBody(shape)
{
Name = name,
Pose = pose,
MotionType = motionType,
};
simulation.RigidBodies.Add(rigidBody);
}
public CompositeFixture(DR.RigidBody wrappedRigidBody, FixtureDescriptor descriptor)
{
_root = true;
_pose = descriptor.Pose;
_realPose = _pose;
_wrappedCompositeMaterial = new CompositeMaterial();
wrappedRigidBody.Material = _wrappedCompositeMaterial;
_wrappedCompositeShape = new CompositeShape();
wrappedRigidBody.Shape = _wrappedCompositeShape;
UserData = descriptor.UserData;
FixtureFactory = new CompositeFixtureFixtureFactory(this);
}
SimpleFixture(DR.RigidBody wrappedRigidBody, FixtureDescriptor descriptor)
{
_wrappedRigidBody = wrappedRigidBody;
_wrappedGeometricObject = new GeometricObject(new EmptyShape(), descriptor.Pose.ToDigitalRune());
_wrappedRigidBody.Shape = new TransformedShape(_wrappedGeometricObject);
_wrappedRigidBody.Material = new UniformMaterial();
UserData = descriptor.UserData;
_pose = descriptor.Pose;
ShapeFactory = new SimpleFixtureShapeFactory(this);
_root = true;
MaterialFactory = new SimpleFixtureMaterialFactory(this);
}
SimpleFixture(DR.RigidBody wrappedRigidBody, FixtureDescriptor descriptor)
{
_wrappedRigidBody = wrappedRigidBody;
_wrappedGeometricObject = new GeometricObject(new EmptyShape(), descriptor.Pose.ToDigitalRune());
_wrappedRigidBody.Shape = new TransformedShape(_wrappedGeometricObject);
_wrappedRigidBody.Material = new UniformMaterial();
UserData = descriptor.UserData;
_pose = descriptor.Pose;
ShapeFactory = new SimpleFixtureShapeFactory(this);
_root = true;
MaterialFactory = new SimpleFixtureMaterialFactory(this);
}
public ResponseFilterSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
// Add basic force effects.
Simulation.ForceEffects.Add(new Gravity());
Simulation.ForceEffects.Add(new Damping());
// Only disable collision response if you need collision detection info but no collision
// response. If you can disable collision detection too, use
// Simulation.CollisionDomain.CollisionDetection.CollisionFilter
// instead - this is more efficient!
// (In this sample, a custom filter implementation is used. DigitalRune.Physics provides
// a standard filter implementation: DigitalRune.Physics.CollisionResponseFilter.)
Simulation.ResponseFilter = new MyCollisionResponseFilter();
// Add a ground plane.
RigidBody groundPlane = new RigidBody(new PlaneShape(Vector3F.UnitY, 0))
{
Name = "GroundPlane", // Names are not required but helpful for debugging.
MotionType = MotionType.Static,
};
Simulation.RigidBodies.Add(groundPlane);
// ----- Add boxes at random poses.
BoxShape boxShape = new BoxShape(0.5f, 0.8f, 1.2f);
for (int i = 0; i < 20; i++)
{
Vector3F position = RandomHelper.Random.NextVector3F(-3, 3);
position.Y = 5;
QuaternionF orientation = RandomHelper.Random.NextQuaternionF();
RigidBody body = new RigidBody(boxShape)
{
Pose = new Pose(position, orientation),
};
Simulation.RigidBodies.Add(body);
}
// ----- Add capsules at random poses.
CapsuleShape capsuleShape = new CapsuleShape(0.3f, 1.2f);
for (int i = 0; i < 20; i++)
{
Vector3F position = RandomHelper.Random.NextVector3F(-3, 3);
position.Y = 5;
QuaternionF orientation = RandomHelper.Random.NextQuaternionF();
RigidBody body = new RigidBody(capsuleShape)
{
Pose = new Pose(position, orientation),
};
Simulation.RigidBodies.Add(body);
}
}
internal RigidBody(RigidBodyDescriptor descriptor)
{
WrappedRigidBody = new DR.RigidBody {
AutoUpdateMass = true, MotionType = descriptor.MotionType.ToDigitalRune()
};
Configurator = new RigidBodyConfigurator(this);
FixtureFactory = new RigidBodyFixtureFactory(this);
Forces = new RigidBodyForces(this);
Velocity = new RigidBodyVelocity(this);
MassFrame = new RigidBodyMassFrame(this);
Descriptor = descriptor;
}
// OnLoad() is called when the GameObject is added to the IGameObjectService.
protected override void OnLoad()
{
var contentManager = _services.GetInstance<ContentManager>();
// A rusty barrel with multiple levels of detail (LODs).
_rigidBody = new RigidBody(new CylinderShape(0.35f, 1));
_modelNode0 = contentManager.Load<ModelNode>("Barrel/Barrel").Clone();
SampleHelper.EnablePerPixelLighting(_modelNode0);
// Mark the LOD nodes with UserFlags = 1.
_modelNode0.GetDescendants()
.OfType<LodGroupNode>()
.SelectMany(lodGroupNode => lodGroupNode.Levels)
.Select(level => level.Node)
.ForEach(node =>
{
node.UserFlags = 1;
});
// Add a second model where each LOD has a different color.
_modelNode1 = contentManager.Load<ModelNode>("Barrel/Barrel_Colored").Clone();
SampleHelper.EnablePerPixelLighting(_modelNode1);
// Mark the LOD nodes with UserFlags = 2.
_modelNode1.GetDescendants()
.OfType<LodGroupNode>()
.SelectMany(lodGroupNode => lodGroupNode.Levels)
.Select(level => level.Node)
.ForEach(node =>
{
node.UserFlags = 2;
});
// Set a random pose.
var randomPosition = new Vector3F(
RandomHelper.Random.NextFloat(-10, 10),
RandomHelper.Random.NextFloat(2, 5),
RandomHelper.Random.NextFloat(-10, 0));
_rigidBody.Pose = new Pose(randomPosition, RandomHelper.Random.NextQuaternionF());
_modelNode0.PoseWorld = _rigidBody.Pose;
_modelNode1.PoseWorld = _rigidBody.Pose;
// Add rigid body to physics simulation and models to scene.
var simulation = _services.GetInstance<Simulation>();
simulation.RigidBodies.Add(_rigidBody);
var scene = _services.GetInstance<IScene>();
scene.Children.Add(_modelNode0);
scene.Children.Add(_modelNode1);
}
// OnLoad() is called when the GameObject is added to the IGameObjectService.
protected override void OnLoad()
{
var graphicsService = _services.GetInstance<IGraphicsService>();
var gameObjectService = _services.GetInstance<IGameObjectService>();
var content = _services.GetInstance<ContentManager>();
// Check if the game object manager has another ProceduralObject instance.
var otherProceduralObject = gameObjectService.Objects
.OfType<ProceduralObject>()
.FirstOrDefault(o => o != this);
Mesh mesh;
if (otherProceduralObject != null)
{
// This ProceduralObject is not the first. We re-use rigid body data and
// the mesh from the existing instance.
var otherBody = otherProceduralObject._rigidBody;
_rigidBody = new RigidBody(otherBody.Shape, otherBody.MassFrame, otherBody.Material);
mesh = otherProceduralObject._meshNode.Mesh;
}
else
{
// This is the first ProceduralObject instance.
// Create a a new rigid body.
var shape = new MinkowskiSumShape(new GeometricObject(new SphereShape(0.05f)), new GeometricObject(new BoxShape(0.5f, 0.5f, 0.5f)));
_rigidBody = new RigidBody(shape);
// Create a new mesh. See SampleHelper.CreateMesh for more details.
mesh = SampleHelper.CreateMesh(content, graphicsService, _rigidBody.Shape);
mesh.Name = "ProceduralObject";
}
// Create a scene graph node for the mesh.
_meshNode = new MeshNode(mesh);
// Set a random pose.
var randomPosition = new Vector3F(
RandomHelper.Random.NextFloat(-10, 10),
RandomHelper.Random.NextFloat(2, 5),
RandomHelper.Random.NextFloat(-20, 0));
_rigidBody.Pose = new Pose(randomPosition, RandomHelper.Random.NextQuaternionF());
_meshNode.PoseWorld = _rigidBody.Pose;
// Add mesh node to scene graph.
var scene = _services.GetInstance<IScene>();
scene.Children.Add(_meshNode);
// Add rigid body to the physics simulation.
var simulation = _services.GetInstance<Simulation>();
simulation.RigidBodies.Add(_rigidBody);
}
public ContinuousCollisionDetectionSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
// Add basic force effects.
Simulation.ForceEffects.Add(new Gravity());
Simulation.ForceEffects.Add(new Damping());
// Add a ground plane.
RigidBody groundPlane = new RigidBody(new PlaneShape(Vector3F.UnitY, 0))
{
Name = "GroundPlane", // Names are not required but helpful for debugging.
MotionType = MotionType.Static,
};
Simulation.RigidBodies.Add(groundPlane);
// Add a thin wall.
RigidBody body = new RigidBody(new BoxShape(10, 10, 0.1f))
{
MotionType = MotionType.Static,
Pose = new Pose(new Vector3F(0, 5, -5))
};
Simulation.RigidBodies.Add(body);
// ----- Add two fast bodies that move to the wall.
// The first object does not use CCD. (Per default, RigidBody.CcdEnabled is false.)
// The second object uses CCD.
SphereShape bulletShape = new SphereShape(0.2f);
body = new RigidBody(bulletShape)
{
Pose = new Pose(new Vector3F(-2, 5, 5.5f)),
LinearVelocity = new Vector3F(0, 0, -100),
};
Simulation.RigidBodies.Add(body);
body = new RigidBody(bulletShape)
{
Pose = new Pose(new Vector3F(2, 5, 5.5f)),
LinearVelocity = new Vector3F(0, 0, -100),
// Enable CCD for this body.
CcdEnabled = true,
};
Simulation.RigidBodies.Add(body);
// Note:
// Global CCD settings can be changed in Simulation.Settings.Motion.
// CCD can be globally enabled or disabled.
// Per default, Simulation.Settings.Motion.CcdEnabled is true. But RigidBody.CcdEnabled
// is false. RigidBody.CcdEnabled should be set for critical game objects.
}
public CompositeMaterial2Sample(Microsoft.Xna.Framework.Game game)
: base(game)
{
// Add basic force effects.
Simulation.ForceEffects.Add(new Gravity());
Simulation.ForceEffects.Add(new Damping());
// Add a ground plane.
RigidBody groundPlane = new RigidBody(new PlaneShape(new Vector3F(0, 1, 0.25f).Normalized, 0))
{
Name = "GroundPlane", // Names are not required but helpful for debugging.
MotionType = MotionType.Static,
};
// Adjust the coefficients of friction of the ground plane.
((UniformMaterial)groundPlane.Material).DynamicFriction = 0.5f;
((UniformMaterial)groundPlane.Material).StaticFriction = 0.5f;
Simulation.RigidBodies.Add(groundPlane);
// Prepare two materials: a slippery material and a rough material.
UniformMaterial slipperyMaterial = new UniformMaterial
{
DynamicFriction = 0.001f,
StaticFriction = 0.001f,
};
UniformMaterial roughMaterial = new UniformMaterial
{
DynamicFriction = 1,
StaticFriction = 1,
};
// Create a rigid body that consists of multiple shapes: Two boxes and a cylinder between them.
CompositeShape compositeShape = new CompositeShape();
compositeShape.Children.Add(new GeometricObject(new BoxShape(1f, 1f, 1f), new Pose(new Vector3F(1.5f, 0f, 0f))));
compositeShape.Children.Add(new GeometricObject(new BoxShape(1f, 1, 1f), new Pose(new Vector3F(-1.5f, 0f, 0f))));
compositeShape.Children.Add(new GeometricObject(new CylinderShape(0.1f, 2), new Pose(Matrix33F.CreateRotationZ(ConstantsF.PiOver2))));
// A CompositeMaterial is used to assign a different material to each shape.
CompositeMaterial compositeMaterial = new CompositeMaterial();
compositeMaterial.Materials.Add(roughMaterial); // Assign the rough material to the first box.
compositeMaterial.Materials.Add(slipperyMaterial); // Assign the slippery material to the second box.
compositeMaterial.Materials.Add(null); // Use whatever is default for the handle between the boxes.
RigidBody body = new RigidBody(compositeShape, null, compositeMaterial)
{
Pose = new Pose(new Vector3F(0, 2.2f, -5)),
};
Simulation.RigidBodies.Add(body);
}
public WallSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
// Add basic force effects.
Simulation.ForceEffects.Add(new Gravity());
Simulation.ForceEffects.Add(new Damping());
// Add a ground plane.
RigidBody groundPlane = new RigidBody(new PlaneShape(Vector3F.UnitY, 0))
{
Name = "GroundPlane", // Names are not required but helpful for debugging.
MotionType = MotionType.Static,
};
Simulation.RigidBodies.Add(groundPlane);
// ----- Create a wall of boxes.
const int wallHeight = 10;
const int wallWidth = 10;
const float boxWidth = 1.0f;
const float boxDepth = 0.5f;
const float boxHeight = 0.5f;
BoxShape boxShape = new BoxShape(boxWidth, boxHeight, boxDepth);
// Optional: Use a small overlap between boxes to improve the stability.
float overlap = Simulation.Settings.Constraints.AllowedPenetration * 0.5f;
float x;
float y = boxHeight / 2 - overlap;
float z = -5;
for (int i = 0; i < wallHeight; i++)
{
for (int j = 0; j < wallWidth; j++)
{
// Tip: Leave a small gap between neighbor bricks. If the neighbors on the same
// row do not touch, the simulation has less work to do!
x = -boxWidth * wallWidth / 2 + j * (boxWidth + 0.02f) + (i % 2) * boxWidth / 2;
RigidBody brick = new RigidBody(boxShape)
{
Name = "Brick" + i,
Pose = new Pose(new Vector3F(x, y, z)),
};
Simulation.RigidBodies.Add(brick);
}
y += boxHeight - overlap;
}
}
public ContentPipelineHeightFieldSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
// Add basic force effects.
Simulation.ForceEffects.Add(new Gravity());
Simulation.ForceEffects.Add(new Damping());
// Load height field model and add it to the graphics scene.
_heightFieldModelNode = ContentManager.Load<ModelNode>("HeightField/TerrainHeights").Clone();
GraphicsScreen.Scene.Children.Add(_heightFieldModelNode);
// The UserData contains the collision shape of type HeightField.
HeightField heightField = (HeightField)_heightFieldModelNode.UserData;
_heightFieldModelNode.PoseWorld = new Pose(new Vector3F(-heightField.WidthX / 2, 0, -heightField.WidthZ / 2));
// Create rigid body.
_heightFieldBody = new RigidBody(heightField, null, null)
{
MotionType = MotionType.Static,
Pose = _heightFieldModelNode.PoseWorld,
// The PhysicsSample class should not draw the height field.
UserData = "NoDraw",
};
Simulation.RigidBodies.Add(_heightFieldBody);
// Distribute a few spheres and boxes across the landscape.
SphereShape sphereShape = new SphereShape(0.5f);
for (int i = 0; i < 30; i++)
{
Vector3F position = RandomHelper.Random.NextVector3F(-30, 30);
position.Y = 20;
RigidBody body = new RigidBody(sphereShape) { Pose = new Pose(position) };
Simulation.RigidBodies.Add(body);
}
BoxShape boxShape = new BoxShape(1, 1, 1);
for (int i = 0; i < 30; i++)
{
Vector3F position = RandomHelper.Random.NextVector3F(-30, 30);
position.Y = 20;
RigidBody body = new RigidBody(boxShape) { Pose = new Pose(position) };
Simulation.RigidBodies.Add(body);
}
}
public TechniqueBindingSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
SampleFramework.IsMouseVisible = false;
_graphicsScreen = new DeferredGraphicsScreen(Services);
_graphicsScreen.DrawReticle = true;
GraphicsService.Screens.Insert(0, _graphicsScreen);
Services.Register(typeof(DebugRenderer), null, _graphicsScreen.DebugRenderer);
Services.Register(typeof(IScene), null, _graphicsScreen.Scene);
// Add gravity and damping to the physics Simulation.
Simulation.ForceEffects.Add(new Gravity());
Simulation.ForceEffects.Add(new Damping());
// Add a custom game object which controls the camera.
var cameraGameObject = new CameraObject(Services);
GameObjectService.Objects.Add(cameraGameObject);
_graphicsScreen.ActiveCameraNode = cameraGameObject.CameraNode;
// More standard objects.
GameObjectService.Objects.Add(new GrabObject(Services));
GameObjectService.Objects.Add(new ObjectCreatorObject(Services));
GameObjectService.Objects.Add(new StaticSkyObject(Services));
GameObjectService.Objects.Add(new GroundObject(Services));
// Tell the graphics service how to treat effect techniques which use
// the "RepeatParameter" annotation.
_repeatTechniqueInterpreter = new RepeatTechniqueInterpreter();
GraphicsService.EffectInterpreters.Insert(0, _repeatTechniqueInterpreter);
_repeatTechniqueBinder = new RepeatTechniqueBinder();
GraphicsService.EffectBinders.Insert(0, _repeatTechniqueBinder);
// Load model.
_modelNode = ContentManager.Load<ModelNode>("Fur2/FurBall").Clone();
_rigidBody = new RigidBody(new SphereShape(0.5f));
// Set a random pose.
_rigidBody.Pose = new Pose(new Vector3F(0, 1, 0), RandomHelper.Random.NextQuaternionF());
_modelNode.PoseWorld = _rigidBody.Pose;
// Add rigid body to physics simulation and model to scene.
Simulation.RigidBodies.Add(_rigidBody);
_graphicsScreen.Scene.Children.Add(_modelNode);
}
public KinematicSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
// Add basic force effects.
Simulation.ForceEffects.Add(new Gravity());
Simulation.ForceEffects.Add(new Damping());
// Add a ground plane.
RigidBody groundPlane = new RigidBody(new PlaneShape(Vector3F.UnitY, 0))
{
Name = "GroundPlane", // Names are not required but helpful for debugging.
MotionType = MotionType.Static,
};
Simulation.RigidBodies.Add(groundPlane);
// Create the kinematic body. (Kinematic means that the velocity of the body is not
// the result of simulated forces and constraints. Instead the velocity of the body
// is directly controlled by the application.)
_kinematicBody = new RigidBody(new ConeShape(0.3f, 1))
{
MotionType = MotionType.Kinematic
};
Simulation.RigidBodies.Add(_kinematicBody);
// Create a cyclic path.
CreatePath();
// Add a number of random boxes.
const int numberOfBoxes = 20;
BoxShape boxShape = new BoxShape(1, 1, 1);
for (int i = 0; i < numberOfBoxes; i++)
{
Vector3F randomPosition = RandomHelper.Random.NextVector3F(-5, 5);
randomPosition.Y = 5;
QuaternionF randomOrientation = RandomHelper.Random.NextQuaternionF();
RigidBody body = new RigidBody(boxShape)
{
Pose = new Pose(randomPosition, randomOrientation),
};
Simulation.RigidBodies.Add(body);
}
}
// OnLoad() is called when the GameObject is added to the IGameObjectService.
protected override void OnLoad()
{
// Prepare n balls.
const int n = 10;
_balls = new RigidBody[n];
var sphereShape = new SphereShape(0.25f);
for (int i = 0; i < _balls.Length; i++)
{
_balls[i] = new RigidBody(sphereShape) // Note: All rigid bodies share the same shape.
{
// Assign a name. (Just for debugging.)
Name = "Ball" + i,
// The balls are shot with a high velocity. We need to enable "Continuous Collision
// Detection" - otherwise, we could miss some collision.
CcdEnabled = true,
};
}
}
public override void Apply(RigidBody body)
{
// Gravity forces act on the center of mass.
Vector3F centerOfMass = body.PoseCenterOfMass.Position;
// Normalize the vector.
if (!centerOfMass.TryNormalize())
{
// Unable to normalize the vector, the body is already in the gravity origin.
return;
}
// The gravity should act from the center of mass to the origin.
Vector3F gravityDirection = -centerOfMass;
// Add gravity force with an acceleration of 9.81 m/s².
// (force = mass * acceleration)
AddForce(body, body.MassFrame.Mass * gravityDirection * 9.81f);
}
public CustomGravitySample(Microsoft.Xna.Framework.Game game)
: base(game)
{
// Add basic force effects.
Simulation.ForceEffects.Add(new CustomGravity());
Simulation.ForceEffects.Add(new Damping());
// Add a static sphere that represents the planet.
RigidBody planet = new RigidBody(new SphereShape(5))
{
MotionType = MotionType.Static,
};
Simulation.RigidBodies.Add(planet);
// ----- Add a few cylinder and sphere bodies at random positions above the planet.
Shape cylinderShape = new CylinderShape(0.3f, 1);
for (int i = 0; i < 10; i++)
{
// A random position 10 m above the planet center.
Vector3F randomPosition = RandomHelper.Random.NextVector3F(-1, 1);
randomPosition.Length = 10;
RigidBody body = new RigidBody(cylinderShape)
{
Pose = new Pose(randomPosition),
};
Simulation.RigidBodies.Add(body);
}
Shape sphereShape = new SphereShape(0.5f);
for (int i = 0; i < 10; i++)
{
Vector3F randomPosition = RandomHelper.Random.NextVector3F(-1, 1);
randomPosition.Length = 10;
RigidBody body = new RigidBody(sphereShape)
{
Pose = new Pose(randomPosition),
};
Simulation.RigidBodies.Add(body);
}
}
public override void Initialize()
{
// Prepare 10 balls.
_balls = new RigidBody[10];
Shape sphereShape = new SphereShape(0.2f);
for (int i = 0; i < _balls.Length; i++)
{
_balls[i] = new RigidBody(sphereShape) // Note: All rigid bodies share the same shape.
{
// Assign a name. (Just for debugging.)
Name = "Ball" + i,
// The balls are shot with a high velocity. We need to enable "Continuous Collision
// Detection" - otherwise, we could miss some collision.
CcdEnabled = true,
};
}
base.Initialize();
}
public RagdollSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
// Add basic force effects.
Simulation.ForceEffects.Add(new Gravity());
Simulation.ForceEffects.Add(new Damping());
// Add a ground plane.
RigidBody groundPlane = new RigidBody(new PlaneShape(Vector3F.UnitY, 0))
{
Name = "GroundPlane", // Names are not required but helpful for debugging.
MotionType = MotionType.Static,
};
Simulation.RigidBodies.Add(groundPlane);
// Add a number of ragdolls.
for (int i = 0; i < 5; i++)
{
Vector3F position = RandomHelper.Random.NextVector3F(-3, 3);
position.Y = 1 + i;
AddRagdoll(Simulation, 1, position, 0.0005f, true);
}
// Add some random, static boxes.
BoxShape boxShape = new BoxShape(1, 1, 1);
for (int i = 0; i < 10; i++)
{
Vector3F position = RandomHelper.Random.NextVector3F(-5, 5);
position.Y = 0.5f;
QuaternionF orientation = RandomHelper.Random.NextQuaternionF();
RigidBody body = new RigidBody(boxShape)
{
Pose = new Pose(position, orientation),
MotionType = MotionType.Static
};
Simulation.RigidBodies.Add(body);
}
}
public BreakableJointsSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
// Add basic force effects.
Simulation.ForceEffects.Add(new Gravity());
Simulation.ForceEffects.Add(new Damping());
// Add a ground plane.
RigidBody groundPlane = new RigidBody(new PlaneShape(Vector3F.UnitY, 0))
{
Name = "GroundPlane", // Names are not required but helpful for debugging.
MotionType = MotionType.Static,
};
Simulation.RigidBodies.Add(groundPlane);
// Add ragdolls. We use the Ragdoll-creation method of Sample21.
for (int i = 0; i < 5; i++)
{
Vector3F position = RandomHelper.Random.NextVector3F(-3, 3);
position.Y = 1 + i;
RagdollSample.AddRagdoll(Simulation, 2f, position, 0.0001f, false);
}
}
public RollingSphereSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
// To demonstrate the problems with triangle meshes we increase the gravity and let a
// sphere roll over a curved surface.
// Add basic force effects.
Simulation.ForceEffects.Add(new Gravity { Acceleration = new Vector3F(0, -30, 0) }); // Higher gravity to make the problem more visible.
Simulation.ForceEffects.Add(new Damping());
// Use the custom contact filter to improve sphere contacts.
_sphereContactFilter = new SphereContactFilter();
Simulation.CollisionDomain.CollisionDetection.ContactFilter = _sphereContactFilter;
// The triangle mesh could be loaded from a file, such as an XNA Model.
// In this example will create a height field and convert the height field into a triangle mesh.
var numberOfSamplesX = 60;
var numberOfSamplesZ = 10;
var samples = new float[numberOfSamplesX * numberOfSamplesZ];
for (int z = 0; z < numberOfSamplesZ; z++)
for (int x = 0; x < numberOfSamplesX; x++)
samples[z * numberOfSamplesX + x] = (float)(Math.Sin(x / 6f) * 10f + 5f);
var heightField = new HeightField(0, 0, 70, 30, samples, numberOfSamplesX, numberOfSamplesZ);
// Convert the height field to a triangle mesh.
ITriangleMesh mesh = heightField.GetMesh(0.01f, 3);
// Create a shape for the triangle mesh.
_triangleMeshShape = new TriangleMeshShape(mesh);
// Enable contact welding. And set the welding limit to 1 for maximal effect.
_triangleMeshShape.EnableContactWelding = true;
_originalWeldingLimit = TriangleMeshAlgorithm.WeldingLimit;
TriangleMeshAlgorithm.WeldingLimit = 1;
// Optional: Assign a spatial partitioning scheme to the triangle mesh. (A spatial partition
// adds an additional memory overhead, but it improves collision detection speed tremendously!)
_triangleMeshShape.Partition = new CompressedAabbTree() { BottomUpBuildThreshold = 0 };
// Create a static rigid body using the shape and add it to the simulation.
// We explicitly specify a mass frame. We can use any mass frame for static bodies (because
// static bodies are effectively treated as if they have infinite mass). If we do not specify
// a mass frame in the rigid body constructor, the constructor will automatically compute an
// approximate mass frame (which can take some time for large meshes).
var ground = new RigidBody(_triangleMeshShape, new MassFrame(), null)
{
Pose = new Pose(new Vector3F(-34, 0, -40f)),
MotionType = MotionType.Static,
};
Simulation.RigidBodies.Add(ground);
SphereShape sphereShape = new SphereShape(0.5f);
_sphere = new RigidBody(sphereShape);
Simulation.RigidBodies.Add(_sphere);
_enableSmoothMovement = true;
_timeUntilReset = TimeSpan.Zero;
}
