private void DisableCollisions(Body rb0, Body rb1)
{
if ((rb0.CollisionSkin == null) || (rb1.CollisionSkin == null))
return;
rb0.CollisionSkin.NonCollidables.Add(rb1.CollisionSkin);
rb1.CollisionSkin.NonCollidables.Add(rb0.CollisionSkin);
}
/// <summary>
/// Constructor
/// </summary>
public CollisionSkin()
{
this.ID = idCounter++;
this.owner = null;
collSystem = null;
}
public HeightMapModel2(Game game, HeightMap info, Boolean t, Vector3 pos, float scale)
: base(game , null, t, pos, scale)
{
// Game game, Model m, Boolean t, Vector3 pos, float scale, Boolean solid
//Game game, HeightMap m, Boolean t, Vector3 pos, float scale
this.Visible = false;
Body = new Body();
Skin = new CollisionSkin(null);
//Skin.CollisionType = (int)CollisionTypes.Terrain;
Array2D field = new Array2D(info.heights.GetUpperBound(0), info.heights.GetUpperBound(1));
for (int x = 0; x < info.heights.GetUpperBound(0); x++)
{
for (int z = 0; z < info.heights.GetUpperBound(1); z++)
{
field.SetAt(x, z, info.heights[x, z]);
}
}
Body.MoveTo(new Vector3(info.heightmapPosition.X, info.heightmapPosition.Y, info.heightmapPosition.Y), Matrix.Identity);
Skin.AddPrimitive(new Heightmap(field, info.heightmapPosition.X, info.heightmapPosition.Y, scale, scale), (int)MaterialTable.MaterialID.NotBouncyRough);
Body.Immovable = true;
PhysicsSystem.CurrentPhysicsSystem.CollisionSystem.AddCollisionSkin(Skin);
}
public BoostController(Body body, Vector3 force, Vector3 forcePos, Vector3 torque)
{
Body = body;
Force = force;
ForcePosition = forcePos;
Torque = torque;
}
public override void SetSkinAndBody()
{
Body = new Body();
Skin = new CollisionSkin(null);
Skin.AddPrimitive(new JigLibX.Geometry.Plane(Vector3.Up, 0f), new MaterialProperties(0.2f, 0.7f, 0.6f));
PhysicsSystem.CurrentPhysicsSystem.CollisionSystem.AddCollisionSkin(Skin);
}
public HeightmapObject(Game game, Model model,Vector2 shift)
: base(game, model)
{
body = new Body(); // just a dummy. The PhysicObject uses its position to get the draw pos
collision = new CollisionSkin(null);
HeightMapInfo heightMapInfo = model.Tag as HeightMapInfo;
Array2D field = new Array2D(heightMapInfo.heights.GetUpperBound(0), heightMapInfo.heights.GetUpperBound(1));
for (int x = 0; x < heightMapInfo.heights.GetUpperBound(0); x++)
{
for (int z = 0; z < heightMapInfo.heights.GetUpperBound(1); z++)
{
field.SetAt(x,z,heightMapInfo.heights[x,z]);
}
}
// move the body. The body (because its not connected to the collision
// skin) is just a dummy. But the base class shoudl know where to
// draw the model.
body.MoveTo(new Vector3(shift.X,0,shift.Y), Matrix.Identity);
collision.AddPrimitive(new Heightmap(field, shift.X, shift.Y, 1, 1), new MaterialProperties(0.7f,0.7f,0.6f));
PhysicsSystem.CurrentPhysicsSystem.CollisionSystem.AddCollisionSkin(collision);
}
// TODO: Need to add png parameter
public HeightMapModel(Game game, Model m, Boolean t, Vector3 pos, float scale)
: base(game, m, t, pos, scale, true)
{
Body = new Body(); // just a dummy. The PhysicObject uses its position to get the draw pos
Skin = new CollisionSkin(null);
HeightMapInfo heightMapInfo = this.model.Tag as HeightMapInfo;
Array2D field = new Array2D(heightMapInfo.heights.GetUpperBound(0), heightMapInfo.heights.GetUpperBound(1));
for (int x = 0; x < heightMapInfo.heights.GetUpperBound(0); x++)
{
for (int z = 0; z < heightMapInfo.heights.GetUpperBound(1); z++)
{
field.SetAt(x, z, heightMapInfo.heights[x, z]);
}
}
// move the body. The body (because its not connected to the collision
// skin) is just a dummy. But the base class shoudl know where to
// draw the model.
Body.MoveTo(this.Position, Matrix.Identity);
Skin.AddPrimitive(new Heightmap(field, 0f, 0f, 1, 1), new MaterialProperties(0.7f, 0.7f, 0.6f));
PhysicsSystem.CurrentPhysicsSystem.CollisionSystem.AddCollisionSkin(this.Skin);
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="owner"></param>
public CollisionSkin(Body owner)
{
this.ID = idCounter++;
this.owner = owner;
collSystem = null;
}
public static Matrix ToXNA(Body body, Transform transform)
{
Vector3 rot = transform.GetRotation();
Matrix mat = body.Orientation * Matrix.CreateRotationY(rot.Y);
mat.Translation = body.Position;
return mat;
}
public BowlingPin(Game game, Model model, Matrix orientation, Vector3 position)
: base(game, model)
{
body = new Body();
collision = new CollisionSkin(body);
// add a capsule for the main corpus
Primitive capsule = new Capsule(Vector3.Zero, Matrix.Identity, 0.1f, 1.3f);
// add a small box at the buttom
Primitive box = new Box(new Vector3(-0.1f,-0.1f,-0.1f), Matrix.Identity, Vector3.One * 0.2f);
// add a sphere in the middle
Primitive sphere = new Sphere(new Vector3(0.0f, 0.0f, 0.3f), 0.3f);
collision.AddPrimitive(capsule, new MaterialProperties(0.1f, 0.5f, 0.5f));
collision.AddPrimitive(box, new MaterialProperties(0.1f, 0.5f, 0.5f));
collision.AddPrimitive(sphere, new MaterialProperties(0.1f, 0.5f, 0.5f));
body.CollisionSkin = this.collision;
Vector3 com = SetMass(0.5f);
body.MoveTo(position, orientation);
collision.ApplyLocalTransform(new Transform(-com, Matrix.Identity));
body.EnableBody();
this.scale = Vector3.One * 10.0f;
}
public override void Initialise()
{
base.Initialise();
// Create new bodey and collision skin
m_Body = new Body();
m_Skin = new CollisionSkin(m_Body);
if (m_Body != null)
{
// Set skin to the body
m_Body.CollisionSkin = m_Skin;
// Check the skin was successfully created and add this
// custom dice as a primitive to the collision skin
if (m_Skin != null)
{
Box box = new Box(Vector3.Zero, Matrix.Identity, transform.Scale);
m_Skin.AddPrimitive(box, (int)MaterialTable.MaterialID.BouncyNormal);
// Set mass
m_Mass = SetMass(1.0f);
// Move the body to correct position initially
m_Body.MoveTo(transform.Position, Matrix.Identity);
// Apply transform to skin
m_Skin.ApplyLocalTransform(new JigLibX.Math.Transform(-m_Mass, Matrix.Identity));
// Enable body
EnableBody();
}
}
}
void Setup(HeightMapInfo heightMapInfo, Vector2 shift)
{
// A dummy. The physics object uses its position to get draw pos
Body = new Body();
CollisionSkin = new CollisionSkin(null);
info = heightMapInfo;
Array2D field = new Array2D(heightMapInfo.Heights.GetUpperBound(0), heightMapInfo.Heights.GetUpperBound(1));
for (int x = 0; x < heightMapInfo.Heights.GetUpperBound(0); ++x)
{
for (int z = 0; z < heightMapInfo.Heights.GetUpperBound(1); ++z)
{
field.SetAt(x, z, heightMapInfo.Heights[x, z]);
}
}
// Move dummy body. The body isn't connected to the collision skin.
// But the base class should know where to draw the model.
Body.MoveTo(new Vector3(shift.X, 0, shift.Y), Matrix.Identity);
CollisionSkin.AddPrimitive(new Heightmap(field, shift.X, shift.Y, 1, 1), new MaterialProperties(0.7f, 0.7f, 0.6f));
PhysicsSystem.CurrentPhysicsSystem.CollisionSystem.AddCollisionSkin(CollisionSkin);
}
/// <summary>
/// Default Constructor
/// Initalizes the Body and a CollisionSkin
/// No Primatives are added to the Body
/// </summary>
/// <param name="position">Initial Body Position</param>
/// <param name="scale">Scale</param>
public Gobject()
{
Body = new Body();
Skin = new CollisionSkin(Body);
Body.CollisionSkin = Skin;
Body.ExternalData = this;
}
public HeightmapObject(Model model,Vector2 shift, Vector3 position)
: base()
{
Body = new Body(); // just a dummy. The PhysicObject uses its position to get the draw pos
Skin = new CollisionSkin(null);
HeightMapInfo heightMapInfo = model.Tag as HeightMapInfo;
Array2D field = new Array2D(heightMapInfo.heights.GetLength(0), heightMapInfo.heights.GetLength(1));
for (int x = 0; x < heightMapInfo.heights.GetLength(0); x++)
{
for (int z = 0; z < heightMapInfo.heights.GetLength(1); z++)
{
field.SetAt(x,z,heightMapInfo.heights[x,z]);
}
}
// move the body. The body (because its not connected to the collision
// skin) is just a dummy. But the base class shoudl know where to
// draw the model.
Body.MoveTo(new Vector3(shift.X,0,shift.Y), Matrix.Identity);
Skin.AddPrimitive(new Heightmap(field, shift.X, shift.Y, heightMapInfo.terrainScale, heightMapInfo.terrainScale), new MaterialProperties(0.7f, 0.7f, 0.6f));
PhysicsSystem.CurrentPhysicsSystem.CollisionSystem.AddCollisionSkin(Skin);
CommonInit(position, new Vector3(1,1,1), model, false, 0);
}
// I'd like to create a controller and tell it how to control from then on.
// maybe it should be a more abstract body controller, made up of physics controllers
//
public BoostController(Body body, Vector3 force, Vector3 torque)
{
Body = body;
Force = force;
Torque = torque;
ForcePosition = new Vector3(0, 0, 0);
}
public Missile(ParentGame game, Model modelObj, Texture2D[] modelTextures, DrawingClass drawClass, GameplayScreen Screen)
: base(game, modelObj, modelTextures)
{
this.drawClass = drawClass;
this.Screen = Screen;
_body = new Body();
_skin = new CollisionSkin(_body);
_body.CollisionSkin = _skin;
Box box = new Box(Vector3.Zero, Matrix.Identity, new Vector3(1f,1f,4f));
_skin.AddPrimitive(box, new MaterialProperties(0.8f, 0.8f, 0.7f));
Vector3 com = SetMass(2.0f);
_body.MoveTo(position, Matrix.Identity);
_skin.ApplyLocalTransform(new Transform(-com, Matrix.Identity));
_body.EnableBody();
Body.ExternalData = this;
Vector3 pos = position;
Vector3 forwardVec = Body.Orientation.Forward;
forwardVec.Normalize();
pos -= forwardVec * 10;
// Use the particle emitter helper to output our trail particles.
trailEmitter = new ParticleEmitter(drawClass.projectileTrailParticles,
trailParticlesPerSecond, position);
rgob = new RagdollObject(parentGame, null, null, null, RagdollObject.RagdollType.Simple, 1.0f, 3);
rgob.Position = position;
//rgob.PutToSleep();
//rgob.limbs[0].PhysicsBody.AngularVelocity = (new Vector3(1, 1, 0) * 2000);
RagdollTransforms = new List<Matrix>();
RagdollTransforms = rgob.GetWorldMatrix();
foreach (JigLibX.Objects.PhysicObject lim in rgob.limbs)
DisableCollisions(lim.PhysicsBody, Body);
foreach (JigLibX.Objects.PhysicObject lim in rgob.limbs)
foreach (BuildingPiece pic in Screen.PieceList)
DisableCollisions(lim.PhysicsBody, pic.Body);
foreach (JigLibX.Objects.PhysicObject lim in rgob.limbs)
foreach (Building bld in Screen.Buildings)
DisableCollisions(lim.PhysicsBody, bld.Body);
foreach (JigLibX.Objects.PhysicObject lim in rgob.limbs)
DisableCollisions(lim.PhysicsBody, Screen.terrainActor.Body);
foreach (JigLibX.Objects.PhysicObject limb0 in rgob.limbs)
foreach (Missile mis in Screen.BulletList)
foreach (JigLibX.Objects.PhysicObject limb1 in mis.rgob.limbs)
DisableCollisions(limb1.PhysicsBody, limb0.PhysicsBody);
}
private bool CollidedRecently = true; // we want the object to update immediately once created
#endregion Fields
#region Constructors
/// <summary>
/// Default Constructor
/// Initalizes the Body and a CollisionSkin
/// No Primatives are added to the Body
/// </summary>
/// <param name="position">Initial Body Position</param>
/// <param name="scale">Scale</param>
public Gobject()
{
Body = new Body();
Skin = new CollisionSkin(Body);
Body.CollisionSkin = Skin;
Body.ExternalData = this;
Body.CollisionSkin.callbackFn += new CollisionCallbackFn(CollisionSkin_callbackFn);
}
public PlaneObject(Game game, Model model, float d)
: base(game, model)
{
body = new Body();
collision = new CollisionSkin(null);
collision.AddPrimitive(new JigLibX.Geometry.Plane(Vector3.Up, d), new MaterialProperties(0.2f, 0.7f, 0.6f));
PhysicsSystem.CurrentPhysicsSystem.CollisionSystem.AddCollisionSkin(collision);
}
public PlaneObject(Model model,float d, Vector3 position, int asset)
: base()
{
Body = new Body();
Skin = new CollisionSkin(null);
Skin.AddPrimitive(new JigLibX.Geometry.Plane(Vector3.Up, d), new MaterialProperties(0.2f, 0.7f, 0.6f));
PhysicsSystem.CurrentPhysicsSystem.CollisionSystem.AddCollisionSkin(Skin);
CommonInit(position, new Vector3(1,1,1), model, false, asset);
}
public Weapon(string modelName, Body body, Transform transform, Scene scene)
{
this.ignorePred = new IgnoreSkinPredicate(body);
this.scene = scene;
this.fpsModel = new ViewModel(modelName);
fpsModel.SetTransform(transform);
Matrix weaponTransform = Matrix.CreateScale(0.1f) * Matrix.CreateRotationX(-MathHelper.PiOver2) * Matrix.CreateRotationY(MathHelper.PiOver2);
fpsModel.SetCustomMatrix(weaponTransform);
fpsModel.GetAnimationLayer().SetActiveAnimation("Pistol_Idle", true);//.SetAnimationLayer("Pistol_Idle", 1);
}
// Setup everything
void Setup()
{
// We can't use InitializeBody() here because we want to add a
// plane and not have it fall
Body = new Body();
CollisionSkin = new CollisionSkin(null);
CollisionSkin.AddPrimitive(
new JigLibX.Geometry.Plane(Vector3.Up, 0.0f),
new MaterialProperties(0.2f, 0.7f, 0.6f));
PhysicsSystem.CurrentPhysicsSystem.CollisionSystem.AddCollisionSkin(CollisionSkin);
}
public ZoneObject(string id, ObjectType objectType,
Transform3D transform, Effect effect, Color color, float alpha, bool isImpenetrable)
: base(id, objectType, transform, effect, color, alpha)
{
//set body and skin for this zone
this.body = new Body();
this.body.ExternalData = this;
this.collision = new CollisionSkin(this.body);
this.body.CollisionSkin = this.collision;
this.isImpenetrable = isImpenetrable; //we cant move through it
}
public override void Initialise()
{
base.Initialise();
// Create new bodey and collision skin
m_Body = new Body();
m_Skin = new CollisionSkin(m_Body);
// Set physics controller
m_PhysicsController.Initialize(m_Body);
}
public virtual void Initialize(Body body)
{
EnableController();
m_Body = body;
if (m_Body != null)
{
// Update downwards force ( mass based )
//m_ConstantForces = (Vector3.Down * m_Body.Mass * 100);
}
}
public SphereObject(Game game, Model model,float radius, Matrix orientation, Vector3 position)
: base(game, model)
{
body = new Body();
collision = new CollisionSkin(body);
collision.AddPrimitive(new Sphere(Vector3.Zero * 5.0f,radius), new MaterialProperties(0.5f,0.7f,0.6f));
body.CollisionSkin = this.collision;
Vector3 com = SetMass(10.0f);
body.MoveTo(position + com, orientation);
// collision.ApplyLocalTransform(new Transform(-com, Matrix.Identity));
body.EnableBody();
this.scale = Vector3.One * radius;
}
public Weapon(string datablockName, Body body, Transform transform, Scene scene)
{
this.ignorePred = new IgnoreSkinPredicate(body);
this.scene = scene;
this.datablock = ResourceManager.Inst.GetWeaponDatablock(datablockName);
this.fpsModel = new ViewModel(datablock.MeshName);
this.fpsModel.SetRenderAlways(true, scene);
this.ammo = datablock.AmmoPerClip;
this.ReserveAmmo = datablock.DefaultAmmo;
fpsModel.SetTransform(transform);
fpsModel.SetCustomMatrix(datablock.CustomMatrix);
fpsModel.GetAnimationLayer().SetActiveAnimation(datablock.GetAnimation(WeaponAnimations.Idle), true);
}
public CollidableObject(string id, ObjectType objectType, Transform3D transform, Effect effect,
Texture2D texture, Model model, Color color, float alpha)
: base(id, objectType, transform, effect, texture, model, color, alpha)
{
this.body = new Body();
this.body.ExternalData = this;
this.collision = new CollisionSkin(this.body);
this.body.CollisionSkin = this.collision;
//register for callback collision to see who just walked into the zone
//we will only normally register for this event in a class that sub-classes CollidableObject e.g. PickupCollidableObject or PlayerCollidableObject
this.Body.CollisionSkin.callbackFn += CollisionSkin_callbackFn;
}
public BoxObject(Game game,Model model,Vector3 sideLengths, Matrix orientation, Vector3 position)
: base(game,model)
{
body = new Body();
collision = new CollisionSkin(body);
collision.AddPrimitive(new Box(- 0.5f * sideLengths, orientation, sideLengths), new MaterialProperties(0.8f, 0.8f, 0.7f));
body.CollisionSkin = this.collision;
Vector3 com = SetMass(1.0f);
body.MoveTo(position, Matrix.Identity);
collision.ApplyLocalTransform(new Transform(-com, Matrix.Identity));
body.EnableBody();
this.scale = sideLengths;
}
public CapsuleObject(Game game, Model model,float radius,float length, Matrix orientation, Vector3 position)
: base(game, model)
{
body = new Body();
collision = new CollisionSkin(body);
collision.AddPrimitive(new Capsule(Vector3.Transform(new Vector3(-0.5f,0,0), orientation),orientation,radius,length),(int)MaterialTable.MaterialID.BouncyNormal);
body.CollisionSkin = this.collision;
Vector3 com = SetMass(10.0f);
body.MoveTo(position + com, Matrix.Identity);
collision.ApplyLocalTransform(new Transform(-com,Matrix.Identity));
body.EnableBody();
this.scale = new Vector3(radius, radius, length / 2);
}
public CylinderObject(Game game, float radius, float length, Vector3 position, Model model)
: base(game, model)
{
body = new Body();
collision = new CollisionSkin(body);
if (length - 2.0f * radius < 0.0f)
throw new ArgumentException("Radius must be at least half length");
Capsule middle = new Capsule(Vector3.Zero, Matrix.Identity, radius, length - 2.0f * radius);
float sideLength = 2.0f * radius / (float) Math.Sqrt(2.0d);
Vector3 sides = new Vector3(-0.5f * sideLength, -0.5f * sideLength, -radius);
Box supply0 = new Box(sides, Matrix.Identity,
new Vector3(sideLength, sideLength, length));
Box supply1 = new Box(Vector3.Transform(sides,Matrix.CreateRotationZ(MathHelper.PiOver4)),
Matrix.CreateRotationZ(MathHelper.PiOver4), new Vector3(sideLength, sideLength, length));
collision.AddPrimitive(middle, new MaterialProperties(0.8f, 0.8f, 0.7f));
collision.AddPrimitive(supply0, new MaterialProperties(0.8f, 0.8f, 0.7f));
collision.AddPrimitive(supply1, new MaterialProperties(0.8f, 0.8f, 0.7f));
body.CollisionSkin = this.collision;
Vector3 com = SetMass(1.0f);
collision.ApplyLocalTransform(new Transform(-com, Matrix.Identity));
#region Manually set body inertia
float cylinderMass = body.Mass;
float comOffs = (length - 2.0f * radius) * 0.5f; ;
float Ixx = 0.5f * cylinderMass * radius * radius + cylinderMass * comOffs * comOffs;
float Iyy = 0.25f * cylinderMass * radius * radius + (1.0f / 12.0f) * cylinderMass * length * length + cylinderMass * comOffs * comOffs;
float Izz = Iyy;
body.SetBodyInertia(Ixx, Iyy, Izz);
#endregion
body.MoveTo(position, Matrix.CreateRotationX(MathHelper.PiOver2));
body.EnableBody();
this.scale = new Vector3(radius, radius, length * 0.5f);
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="body"></param>
/// <param name="frame"></param>
/// <param name="vel"></param>
/// <param name="angVel"></param>
public ConstraintVelocity(Body body, ReferenceFrame frame, Vector3?vel, Vector3?angVel)
{
Initialise(body, frame, vel, angVel);
}
public void Initialise(Body body0, Body body1, Vector3 hingeAxis, Vector3 hingePosRel0,
float hingeHalfWidth, float hingeFwdAngle, float hingeBckAngle, float sidewaysSlack, float damping)
{
this.body0 = body0;
this.body1 = body1;
this.hingeAxis = hingeAxis;
this.hingePosRel0 = hingePosRel0;
this.usingLimit = false;
this.damping = damping;
// tScalar allowedDistance = 0.005f;
this.hingeAxis.Normalize();
Vector3 hingePosRel1 = body0.Position + hingePosRel0 - body1.Position;
// generate the two positions relative to each body
Vector3 relPos0a = hingePosRel0 + hingeHalfWidth * hingeAxis;
Vector3 relPos0b = hingePosRel0 - hingeHalfWidth * hingeAxis;
Vector3 relPos1a = hingePosRel1 + hingeHalfWidth * hingeAxis;
Vector3 relPos1b = hingePosRel1 - hingeHalfWidth * hingeAxis;
float timescale = 1.0f / 20.0f;
float allowedDistanceMid = 0.005f;
float allowedDistanceSide = sidewaysSlack * hingeHalfWidth;
mSidePointConstraints = new ConstraintMaxDistance[2];
mSidePointConstraints[0] = new ConstraintMaxDistance();
mSidePointConstraints[1] = new ConstraintMaxDistance();
mSidePointConstraints[0].Initialise(body0, relPos0a, body1, relPos1a, allowedDistanceSide);
mSidePointConstraints[1].Initialise(body0, relPos0b, body1, relPos1b, allowedDistanceSide);
mMidPointConstraint = new ConstraintPoint();
mMidPointConstraint.Initialise(body0, hingePosRel0, body1, hingePosRel1, allowedDistanceMid, timescale);
if (hingeFwdAngle <= 150) // MAX_HINGE_ANGLE_LIMIT
{
// choose a direction that is perpendicular to the hinge
Vector3 perpDir = Vector3.Up;
if (Vector3.Dot(perpDir, hingeAxis) > 0.1f)
{
perpDir = Vector3.Right;
}
// now make it perpendicular to the hinge
Vector3 sideAxis = Vector3.Cross(hingeAxis, perpDir);
perpDir = Vector3.Cross(sideAxis, hingeAxis);
perpDir.Normalize();
// the length of the "arm" TODO take this as a parameter? what's
// the effect of changing it?
float len = 10.0f * hingeHalfWidth;
// Choose a position using that dir. this will be the anchor point
// for body 0. relative to hinge
Vector3 hingeRelAnchorPos0 = perpDir * len;
// anchor point for body 2 is chosen to be in the middle of the
// angle range. relative to hinge
float angleToMiddle = 0.5f * (hingeFwdAngle - hingeBckAngle);
Vector3 hingeRelAnchorPos1 = Vector3.Transform(hingeRelAnchorPos0, Matrix.CreateFromAxisAngle(hingeAxis, MathHelper.ToRadians(-angleToMiddle)));
// work out the "string" length
float hingeHalfAngle = 0.5f * (hingeFwdAngle + hingeBckAngle);
float allowedDistance = len * 2.0f * (float)System.Math.Sin(MathHelper.ToRadians(hingeHalfAngle * 0.5f));
Vector3 hingePos = body1.Position + hingePosRel0;
Vector3 relPos0c = hingePos + hingeRelAnchorPos0 - body0.Position;
Vector3 relPos1c = hingePos + hingeRelAnchorPos1 - body1.Position;
mMaxDistanceConstraint = new ConstraintMaxDistance();
mMaxDistanceConstraint.Initialise(body0, relPos0c, body1, relPos1c, allowedDistance);
usingLimit = true;
}
if (damping <= 0.0f)
{
damping = -1.0f; // just make sure that a value of 0.0 doesn't mess up...
}
else
{
damping = MathHelper.Clamp(damping, 0, 1);
}
}