/// <summary>
/// Gets the physics scene held by this plugin.
/// </summary>
/// <param name="sceneIdentifier">The name of the scene</param>
/// <returns>The physics scene</returns>
public PhysicsScene GetScene(String sceneIdentifier)
{
// Check to see if the scene has been created
if (m_remoteScene == null)
{
// Create the remote scene
m_remoteScene = new RemotePhysicsScene(sceneIdentifier);
}
// Return the physics scene held by this plugin
return(m_remoteScene);
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="parentScene">The scene to which this object
/// belongs</param>
/// <param name="localID">The unique identifier of the object</param>
/// <param name="name">The name of the object</param>
/// <param name="typeName">The type of the object</param>
/// <param name="config">The configuration used to initialize this
/// object</param>
protected RemotePhysicsObject(RemotePhysicsScene parentScene,
uint localID, String name, String typeName,
RemotePhysicsConfiguration config)
{
// Initialize the parent physics scene
ParentScene = parentScene;
// Indicate that this object has not been fully initialized
IsInitialized = false;
// Initialize the handle to the configuration that will be used
// initialize other properties
ParentConfiguration = config;
// Initialize the local ID of this object
LocalID = localID;
// Initialize the name of this physics object
// Usually this is the same name as the OpenSim object
Name = name;
// Initialize the type of this object in string form
TypeName = typeName;
// Initialize the gravity modifier to be 1.0, so that the
// gravity of the scene will be unmodified when it affects
// this object
GravModifier = 1.0f;
// Initialize the gravity vector
Gravity = new OpenMetaverse.Vector3(0.0f, 0.0f, config.Gravity);
// Indicate that the object is not hovering
HoverActive = false;
// Create the list of pending and sent collisions
Collisions = new CollisionEventUpdate();
CollisionsLastReported = Collisions;
// Initialize the collision steps to be invalid steps, since no
// collision has occurred yet
GroundCollisionStep = RemotePhysicsScene.InvalidStep;
ObjectCollisionStep = RemotePhysicsScene.InvalidStep;
LastCollisionStep = RemotePhysicsScene.InvalidStep;
// No collisions have occurred, so start the collision count at 0
NumCollisions = 0;
// Initialize the object that will ensure the thread safety of the
// collision step data
m_collisionStepLock = new Object();
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="localID">The unique identifier of the avatar</param>
/// <param name="avatarName">The name of the avatar</param>
/// <param name="parentScene">The physics scene to which the avatar
/// belongs</param>
/// <param name="position">The initial position of the avatar</param>
/// <param name="velocity">The initial linear velocity of the
/// avatar</param>
/// <param name="size">The size of the avatar</param>
/// <param name="isFlying">Whether the avatar is flying or not</param>
/// <param name="config">The configuration used to initialize the
/// avatar</param>
public RemotePhysicsAvatar(uint localID, String avatarName,
RemotePhysicsScene parentScene, OpenMetaverse.Vector3 position,
OpenMetaverse.Vector3 velocity, OpenMetaverse.Vector3 size,
bool isFlying, RemotePhysicsConfiguration config)
: base(parentScene, localID, avatarName,
"RemotePhysicsCharacter", config)
{
OpenMetaverse.Quaternion localPoseQuat;
// Initialize the unique ID of this avatar
m_actorID = localID;
// Indicate that this object is an avatar
m_actorType = (int)ActorTypes.Agent;
// Initialize the position to what's given
Position = position;
// Initialize the orientation to the default value
Orientation = OpenMetaverse.Quaternion.Identity;
// Initialize the velocity based on what's given
m_velocity = velocity;
// Initialize the friction values based on the parent scene's
// friction coefficient for avatars
Friction = ParentConfiguration.AvatarKineticFriction;
m_kineticFriction = ParentConfiguration.AvatarKineticFriction;
m_staticFriction = ParentConfiguration.AvatarStaticFriction;
// Initialize the density based on the parent scene's density
// value for avatars
Density = ParentConfiguration.AvatarDensity;
// Initialize the size of this avatar using the given size
m_size = size;
// Check to see if any of the dimensions are zero
// If they are, use the default sizes
if (m_size.X == 0.0f)
{
m_size.X = ParentConfiguration.AvatarShapeDepth;
}
if (m_size.Y == 0.0f)
{
m_size.Y = ParentConfiguration.AvatarShapeWidth;
}
if (m_size.Z == 0.0f)
{
m_size.Z = ParentConfiguration.AvatarShapeHeight;
}
// Compute the mass of the avatar, so that it can be referenced
// for later computations
ComputeAvatarMass();
// Send out a message to the remote physics engine to create an
// actor
ParentScene.RemoteMessenger.CreateDynamicActor(m_actorID, Position,
Orientation, 1.0f, m_velocity,
new OpenMetaverse.Vector3(0.0f, 0.0f, 0.0f), true);
// Fetch a unique identifier for this avatar's shape
m_avatarShapeID = ParentScene.GetNewShapeID();
// Build the avatar's shape in the remote physics engine
BuildAvatarShape();
// Add a constraint between the new actor and ground plane such
// that the actor doesn't fall over on its side due to gravity
// Use an unused actor ID to denote that this joint is between the
// avatar and the world frame
m_fallJointID = ParentScene.GetNewJointID();
ParentScene.RemoteMessenger.AddJoint(m_fallJointID, m_actorID,
OpenMetaverse.Vector3.Zero, OpenMetaverse.Quaternion.Identity,
ParentScene.GetNewActorID(), OpenMetaverse.Vector3.Zero,
OpenMetaverse.Quaternion.Identity,
new OpenMetaverse.Vector3(1.0f, 1.0f, 1.0f),
new OpenMetaverse.Vector3(0.0f, 0.0f, 0.0f),
new OpenMetaverse.Vector3(0.0f, 0.0f, 0.0f),
new OpenMetaverse.Vector3(0.0f, 0.0f, 0.0f));
// Indicate that this object is now initialized
IsInitialized = true;
}
