OpenSim-Test/OpenSim/Region/Physics/Manager/PhysicsActor.cs

/*
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* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS AND ANY
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*/
using Axiom.Math;

namespace OpenSim.Physics.Manager
{
    public delegate void PositionUpdate(PhysicsVector position);
    public delegate void VelocityUpdate(PhysicsVector velocity);
    public delegate void OrientationUpdate(Quaternion orientation);

    public abstract class PhysicsActor
    {
        public event PositionUpdate OnPositionUpdate;
        public event VelocityUpdate OnVelocityUpdate;
        public event OrientationUpdate OnOrientationUpdate;

        public static PhysicsActor Null
        {
            get
            {
                return new NullPhysicsActor();
            }
        }

        public abstract PhysicsVector Position
        {
            get;
            set;
        }

        public abstract PhysicsVector Velocity
        {
            get;
            set;
        }

        public abstract PhysicsVector Acceleration
        {
            get;
        }

        public abstract Quaternion Orientation
        {
            get;
            set;
        }

        public abstract bool Flying
        {
            get;
            set;
        }

        public abstract bool Kinematic
        {
            get;
            set;
        }

        public abstract void AddForce(PhysicsVector force);

        public abstract void SetMomentum(PhysicsVector momentum);
    }

    public class NullPhysicsActor : PhysicsActor
    {
        public override PhysicsVector Position
        {
            get
            {
                return PhysicsVector.Zero;
            }
            set
            {
                return;
            }
        }

        public override PhysicsVector Velocity
        {
            get
            {
                return PhysicsVector.Zero;
            }
            set
            {
                return;
            }
        }

        public override Quaternion Orientation
        {
            get
            {
                return Quaternion.Identity;
            }
            set
            {

            }
        }

        public override PhysicsVector Acceleration
        {
            get { return PhysicsVector.Zero; }
        }

        public override bool Flying
        {
            get
            {
                return false;
            }
            set
            {
                return;
            }
        }

        public override bool Kinematic
        {
            get
            {
                return true;
            }
            set
            {
                return;
            }
        }

        public override void AddForce(PhysicsVector force)
        {
            return;
        }

        public override void SetMomentum(PhysicsVector momentum)
        {
            return;
        }
    }
}