OpenSimMirror/OpenSim/Region/Physics/Manager/PhysicsActor.cs

/*
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* modification, are permitted provided that the following conditions are met:
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*     * Redistributions in binary form must reproduce the above copyright
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*       documentation and/or other materials provided with the distribution.
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*       names of its contributors may be used to endorse or promote products
*       derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
using Axiom.Math;
using OpenSim.Framework;

namespace OpenSim.Region.Physics.Manager
{
    public delegate void PositionUpdate(PhysicsVector position);

    public delegate void VelocityUpdate(PhysicsVector velocity);

    public delegate void OrientationUpdate(Quaternion orientation);

    

    public abstract class PhysicsActor
    {
#pragma warning disable 67
        public event PositionUpdate OnPositionUpdate;
        public event VelocityUpdate OnVelocityUpdate;
        public event OrientationUpdate OnOrientationUpdate;
#pragma warning restore 67

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

        public abstract PhysicsVector Size { get; set; }

        public abstract PrimitiveBaseShape Shape
        {
            set;
        }

        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 IsPhysical {get; set;}

        public abstract bool Flying { get; set; }

        public abstract bool IsColliding { get; set; }
        public abstract PhysicsVector RotationalVelocity { 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 Size
        {
            get { return PhysicsVector.Zero; }
            set { return; }
        }

        public override PrimitiveBaseShape Shape
        {
            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 IsPhysical
        {
            get { return false; }
            set { return; }
        }

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

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

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

        public override void AddForce(PhysicsVector force)
        {
            return;
        }
        public override PhysicsVector RotationalVelocity
        {
            get { return PhysicsVector.Zero; }
            set { return; }
        }
        public override void SetMomentum(PhysicsVector momentum)
        {
            return;
        }
    }
}