public World(AABB worldAABB, Vec2 gravity, bool doSleep)
{
this._destructionListener = null;
this._boundaryListener = null;
this._contactFilter = WorldCallback.DefaultFilter;
this._contactListener = null;
this._debugDraw = null;
this._bodyList = null;
this._contactList = null;
this._jointList = null;
this._bodyCount = 0;
this._contactCount = 0;
this._jointCount = 0;
this._warmStarting = true;
this._continuousPhysics = true;
this._allowSleep = doSleep;
this._gravity = gravity;
this._lock = false;
this._inv_dt0 = 0f;
this._contactManager = new ContactManager();
this._contactManager._world = this;
this._broadPhase = new BroadPhase(worldAABB, this._contactManager);
BodyDef def = new BodyDef();
this._groundBody = this.CreateBody(def);
}
public void BeginContact(Contact contact)
{
if (contact.FixtureA.UserData is IEntity && contact.FixtureB.UserData is IEntity) {
IEntity A = (IEntity)contact.FixtureA.UserData;
IEntity B = (IEntity)contact.FixtureB.UserData;
A.OnCollides(B);
B.OnCollides(A);
}
}
public ContactManager()
{
_broadPhase = new BroadPhase();
_defaultFilter = new ContactFilter();
_defaultListener = new ContactListener();
_contactList = null;
_contactCount = 0;
_contactFilter = _defaultFilter;
_contactListener = _defaultListener;
}
void OnEndContact(Box2DX.Dynamics.Contact contact)
{
if ((contact.GetShape1().UserData is Actor) && (contact.GetShape2().UserData is Actor))
{
(contact.GetShape1().UserData as Actor).OnEndContact((contact.GetShape2().UserData as Actor), contact.GetShape1(), contact.GetShape2());
(contact.GetShape2().UserData as Actor).OnEndContact((contact.GetShape1().UserData as Actor), contact.GetShape2(), contact.GetShape1());
}
else
{
throw new Exceptions.PhysicsBodyDataIsBroken("This contact listener requires for user data to be owner of the component to properly operate");
}
}
public ContactSolver(TimeStep step, Contact[] contacts, int contactCount)
{
_step = step;
_constraintCount = contactCount;
_constraints = new ContactConstraint[_constraintCount];
for (int i = 0; i < _constraintCount; i++)
{
_constraints[i] = new ContactConstraint();
}
for (int i = 0; i < _constraintCount; ++i)
{
Contact contact = contacts[i];
Fixture fixtureA = contact._fixtureA;
Fixture fixtureB = contact._fixtureB;
Shape shapeA = fixtureA.Shape;
Shape shapeB = fixtureB.Shape;
float radiusA = shapeA._radius;
float radiusB = shapeB._radius;
Body bodyA = fixtureA.Body;
Body bodyB = fixtureB.Body;
Manifold manifold = contact.Manifold;
float friction = Settings.MixFriction(fixtureA.Friction, fixtureB.Friction);
float restitution = Settings.MixRestitution(fixtureA.Restitution, fixtureB.Restitution);
Box2DXDebug.Assert(manifold.PointCount > 0);
WorldManifold worldManifold = new WorldManifold();
worldManifold.Initialize(manifold, bodyA._xf, radiusA, bodyB._xf, radiusB);
ContactConstraint cc = _constraints[i];
cc.BodyA = bodyA;
cc.BodyB = bodyB;
cc.Manifold = manifold;
cc.Normal = worldManifold.Normal;
cc.PointCount = manifold.PointCount;
cc.Friction = friction;
cc.Restitution = restitution;
cc.LocalPlaneNormal = manifold.LocalPlaneNormal;
cc.LocalPoint = manifold.LocalPoint;
cc.Radius = radiusA + radiusB;
cc.Type = manifold.Type;
ContactSolverSetup(manifold, worldManifold, cc);
}
}
public override void PostSolve(Contact contact, ContactImpulse impulse)
{
if (_broke)
{
// The body already broke.
return;
}
// Should the body break?
int count = contact.GetManifold().PointCount;
float maxImpulse = 0.0f;
for (int i = 0; i < count; ++i)
{
maxImpulse = Math.Max(maxImpulse, impulse.normalImpulses[i]);
}
if (maxImpulse > 50.0f)
{
// Flag the body for breaking.
_break = true;
}
}
public Contact(Shape s1, Shape s2)
{
this._flags = (Contact.CollisionFlags)0;
if (s1.IsSensor || s2.IsSensor)
{
this._flags |= Contact.CollisionFlags.NonSolid;
}
this._shape1 = s1;
this._shape2 = s2;
this._manifoldCount = 0;
this._prev = null;
this._next = null;
this._node1 = new ContactEdge();
this._node1.Contact = null;
this._node1.Prev = null;
this._node1.Next = null;
this._node1.Other = null;
this._node2 = new ContactEdge();
this._node2.Contact = null;
this._node2.Prev = null;
this._node2.Next = null;
this._node2.Other = null;
}
public void Destroy(Contact c)
{
Shape shape1 = c.GetShape1();
Shape shape2 = c.GetShape2();
Body body1 = shape1.GetBody();
Body body2 = shape2.GetBody();
ContactPoint cp = new ContactPoint();
cp.Shape1 = shape1;
cp.Shape2 = shape2;
cp.Friction = Settings.MixFriction(shape1.Friction, shape2.Friction);
cp.Restitution = Settings.MixRestitution(shape1.Restitution, shape2.Restitution);
// Inform the user that this contact is ending.
int manifoldCount = c.GetManifoldCount();
if (manifoldCount > 0 && _world._contactListener!=null)
{
Manifold[] manifolds = c.GetManifolds();
for (int i = 0; i < manifoldCount; ++i)
{
Manifold manifold = manifolds[i];
cp.Normal = manifold.Normal;
for (int j = 0; j < manifold.PointCount; ++j)
{
ManifoldPoint mp = manifold.Points[j];
cp.Position = body1.GetWorldPoint(mp.LocalPoint1);
Vec2 v1 = body1.GetLinearVelocityFromLocalPoint(mp.LocalPoint1);
Vec2 v2 = body2.GetLinearVelocityFromLocalPoint(mp.LocalPoint2);
cp.Velocity = v2 - v1;
cp.Separation = mp.Separation;
cp.ID = mp.ID;
_world._contactListener.Remove(cp);
}
}
}
// Remove from the world.
if (c._prev != null)
{
c._prev._next = c._next;
}
if (c._next != null)
{
c._next._prev = c._prev;
}
if (c == _world._contactList)
{
_world._contactList = c._next;
}
// Remove from body 1
if (c._node1.Prev != null)
{
c._node1.Prev.Next = c._node1.Next;
}
if (c._node1.Next != null)
{
c._node1.Next.Prev = c._node1.Prev;
}
if (c._node1 == body1._contactList)
{
body1._contactList = c._node1.Next;
}
// Remove from body 2
if (c._node2.Prev != null)
{
c._node2.Prev.Next = c._node2.Next;
}
if (c._node2.Next != null)
{
c._node2.Next.Prev = c._node2.Prev;
}
if (c._node2 == body2._contactList)
{
body2._contactList = c._node2.Next;
}
// Call the factory.
Contact.Destroy(c);
--_world._contactCount;
}
public void AddPair(object proxyUserDataA, object proxyUserDataB)
{
Fixture fixtureA = (Fixture)proxyUserDataA;
Fixture fixtureB = (Fixture)proxyUserDataB;
Body bodyA = fixtureA.GetBody();
Body bodyB = fixtureB.GetBody();
// Are the fixtures on the same body?
if (bodyA == bodyB)
{
return;
}
// Are both bodies static?
if (bodyA.IsStatic() && bodyB.IsStatic())
{
return;
}
// Does a contact already exist?
ContactEdge edge = bodyB.GetContactList();
while (edge != null)
{
if (edge.Other == bodyA)
{
Fixture fA = edge.Contact.GetFixtureA();
Fixture fB = edge.Contact.GetFixtureB();
if (fA == fixtureA && fB == fixtureB)
{
// A contact already exists.
return;
}
if (fA == fixtureB && fB == fixtureA)
{
// A contact already exists.
return;
}
}
edge = edge.Next;
}
// Does a joint override collision?
if (bodyB.IsConnected(bodyA))
{
return;
}
// Check user filtering.
if (_contactFilter.ShouldCollide(fixtureA, fixtureB) == false)
{
return;
}
// Call the factory.
Contact c = Contact.Create(fixtureA, fixtureB);
// Contact creation may swap fixtures.
fixtureA = c.GetFixtureA();
fixtureB = c.GetFixtureB();
bodyA = fixtureA.GetBody();
bodyB = fixtureB.GetBody();
// Insert into the world.
c.Prev = null;
c.Next = _contactList;
if (_contactList != null)
{
_contactList.Prev = c;
}
_contactList = c;
// Connect to island graph.
// Connect to body A
c.NodeA.Contact = c;
c.NodeA.Other = bodyB;
c.NodeA.Prev = null;
c.NodeA.Next = bodyA._contactList;
if (bodyA._contactList != null)
{
bodyA._contactList.Prev = c.NodeA;
}
bodyA._contactList = c.NodeA;
// Connect to body B
c.NodeB.Contact = c;
c.NodeB.Other = bodyA;
c.NodeB.Prev = null;
c.NodeB.Next = bodyB._contactList;
if (bodyB._contactList != null)
{
bodyB._contactList.Prev = c.NodeB;
}
bodyB._contactList = c.NodeB;
++_contactCount;
}
public static new void Destroy(Contact contact)
{
}
public static void Destroy(Contact contact, ShapeType typeA, ShapeType typeB)
{
Box2DXDebug.Assert(Initialized == true);
if (contact.Manifold.PointCount > 0)
{
contact.GetFixtureA().GetBody().WakeUp();
contact.GetFixtureB().GetBody().WakeUp();
}
Box2DXDebug.Assert(ShapeType.UnknownShape < typeA && typeB < ShapeType.ShapeTypeCount);
Box2DXDebug.Assert(ShapeType.UnknownShape < typeA && typeB < ShapeType.ShapeTypeCount);
ContactDestroyFcn destroyFcn = Registers[(int)typeA][(int)typeB].DestroyFcn;
destroyFcn(contact);
}
public Contact(Shape s1, Shape s2)
{
_flags = 0;
if (s1.IsSensor || s2.IsSensor)
{
_flags |= CollisionFlags.NonSolid;
}
_shape1 = s1;
_shape2 = s2;
_manifoldCount = 0;
_prev = null;
_next = null;
_node1 = new ContactEdge();
_node1.Contact = null;
_node1.Prev = null;
_node1.Next = null;
_node1.Other = null;
_node2 = new ContactEdge();
_node2.Contact = null;
_node2.Prev = null;
_node2.Next = null;
_node2.Other = null;
}
public void PostSolve(Contact contact, ContactImpulse impulse)
{
//eh
}
public Contact(Fixture fA, Fixture fB)
{
_flags = 0;
if (fA.IsSensor || fB.IsSensor)
{
_flags |= CollisionFlags.NonSolid;
}
_fixtureA = fA;
_fixtureB = fB;
_manifold.PointCount = 0;
_prev = null;
_next = null;
_nodeA = new ContactEdge();
_nodeB = new ContactEdge();
}
new public static void Destroy(ref Contact contact)
{
contact = null;
}
public ContactSolver(TimeStep step, Contact[] contacts, int contactCount)
{
_step = step;
_constraintCount = 0;
for (int i = 0; i < contactCount; ++i)
{
Box2DXDebug.Assert(contacts[i].IsSolid());
_constraintCount += contacts[i].GetManifoldCount();
}
_constraints = new ContactConstraint[_constraintCount];
for (int i = 0; i < _constraintCount; i++)
_constraints[i] = new ContactConstraint();
int count = 0;
for (int i = 0; i < contactCount; ++i)
{
Contact contact = contacts[i];
Shape shape1 = contact._shape1;
Shape shape2 = contact._shape2;
Body b1 = shape1.GetBody();
Body b2 = shape2.GetBody();
int manifoldCount = contact.GetManifoldCount();
Manifold[] manifolds = contact.GetManifolds();
float friction = Settings.MixFriction(shape1.Friction, shape2.Friction);
float restitution = Settings.MixRestitution(shape1.Restitution, shape2.Restitution);
Vec2 v1 = b1._linearVelocity;
Vec2 v2 = b2._linearVelocity;
float w1 = b1._angularVelocity;
float w2 = b2._angularVelocity;
for (int j = 0; j < manifoldCount; ++j)
{
Manifold manifold = manifolds[j];
Box2DXDebug.Assert(manifold.PointCount > 0);
Vec2 normal = manifold.Normal;
Box2DXDebug.Assert(count < _constraintCount);
ContactConstraint cc = _constraints[count];
cc.Body1 = b1;
cc.Body2 = b2;
cc.Manifold = manifold;
cc.Normal = normal;
cc.PointCount = manifold.PointCount;
cc.Friction = friction;
cc.Restitution = restitution;
for (int k = 0; k < cc.PointCount; ++k)
{
ManifoldPoint cp = manifold.Points[k];
ContactConstraintPoint ccp = cc.Points[k];
ccp.NormalImpulse = cp.NormalImpulse;
ccp.TangentImpulse = cp.TangentImpulse;
ccp.Separation = cp.Separation;
ccp.LocalAnchor1 = cp.LocalPoint1;
ccp.LocalAnchor2 = cp.LocalPoint2;
ccp.R1 = Common.Math.Mul(b1.GetXForm().R, cp.LocalPoint1 - b1.GetLocalCenter());
ccp.R2 = Common.Math.Mul(b2.GetXForm().R, cp.LocalPoint2 - b2.GetLocalCenter());
float rn1 = Vec2.Cross(ccp.R1, normal);
float rn2 = Vec2.Cross(ccp.R2, normal);
rn1 *= rn1;
rn2 *= rn2;
float kNormal = b1._invMass + b2._invMass + b1._invI * rn1 + b2._invI * rn2;
Box2DXDebug.Assert(kNormal > Common.Settings.FLT_EPSILON);
ccp.NormalMass = 1.0f / kNormal;
float kEqualized = b1._mass * b1._invMass + b2._mass * b2._invMass;
kEqualized += b1._mass * b1._invI * rn1 + b2._mass * b2._invI * rn2;
Box2DXDebug.Assert(kEqualized > Common.Settings.FLT_EPSILON);
ccp.EqualizedMass = 1.0f / kEqualized;
Vec2 tangent = Vec2.Cross(normal, 1.0f);
float rt1 = Vec2.Cross(ccp.R1, tangent);
float rt2 = Vec2.Cross(ccp.R2, tangent);
rt1 *= rt1;
rt2 *= rt2;
float kTangent = b1._invMass + b2._invMass + b1._invI * rt1 + b2._invI * rt2;
Box2DXDebug.Assert(kTangent > Common.Settings.FLT_EPSILON);
ccp.TangentMass = 1.0f / kTangent;
// Setup a velocity bias for restitution.
ccp.VelocityBias = 0.0f;
if (ccp.Separation > 0.0f)
{
ccp.VelocityBias = -step.Inv_Dt * ccp.Separation; // TODO_ERIN b2TimeStep
}
else
{
float vRel = Vec2.Dot(cc.Normal, v2 + Vec2.Cross(w2, ccp.R2) - v1 - Vec2.Cross(w1, ccp.R1));
if (vRel < -Settings.VelocityThreshold)
{
ccp.VelocityBias = -cc.Restitution * vRel;
}
}
}
// If we have two points, then prepare the block solver.
if (cc.PointCount == 2)
{
ContactConstraintPoint ccp1 = cc.Points[0];
ContactConstraintPoint ccp2 = cc.Points[1];
float invMass1 = b1._invMass;
float invI1 = b1._invI;
float invMass2 = b2._invMass;
float invI2 = b2._invI;
float rn11 = Vec2.Cross(ccp1.R1, normal);
float rn12 = Vec2.Cross(ccp1.R2, normal);
float rn21 = Vec2.Cross(ccp2.R1, normal);
float rn22 = Vec2.Cross(ccp2.R2, normal);
float k11 = invMass1 + invMass2 + invI1 * rn11 * rn11 + invI2 * rn12 * rn12;
float k22 = invMass1 + invMass2 + invI1 * rn21 * rn21 + invI2 * rn22 * rn22;
float k12 = invMass1 + invMass2 + invI1 * rn11 * rn21 + invI2 * rn12 * rn22;
// Ensure a reasonable condition number.
const float k_maxConditionNumber = 100.0f;
if (k11 * k11 < k_maxConditionNumber * (k11 * k22 - k12 * k12))
{
// K is safe to invert.
cc.K.Col1.Set(k11, k12);
cc.K.Col2.Set(k12, k22);
cc.NormalMass = cc.K.Invert();
}
else
{
// The constraints are redundant, just use one.
// TODO_ERIN use deepest?
cc.PointCount = 1;
}
}
++count;
}
}
Box2DXDebug.Assert(count == _constraintCount);
}
/// This lets you inspect a contact after the solver is finished. This is useful
/// for inspecting impulses.
/// Note: the contact manifold does not include time of impact impulses, which can be
/// arbitrarily large if the sub-step is small. Hence the impulse is provided explicitly
/// in a separate data structure.
/// Note: this is only called for contacts that are touching, solid, and awake.
public virtual void PostSolve(Contact contact, ContactImpulse impulse)
{
//B2_NOT_USED(contact);
//B2_NOT_USED(impulse);
}
/// This is called after a contact is updated. This allows you to inspect a
/// contact before it goes to the solver. If you are careful, you can modify the
/// contact manifold (e.g. disable contact).
/// A copy of the old manifold is provided so that you can detect changes.
/// Note: this is called only for awake bodies.
/// Note: this is called even when the number of contact points is zero.
/// Note: this is not called for sensors.
/// Note: if you set the number of contact points to zero, you will not
/// get an EndContact callback. However, you may get a BeginContact callback
/// the next step.
public virtual void PreSolve(Contact contact, Manifold oldManifold)
{
//B2_NOT_USED(contact);
//B2_NOT_USED(oldManifold);
}
/// Called when two fixtures cease to touch.
public virtual void EndContact(Contact contact)
{
//B2_NOT_USED(contact);
}
/// Called when two fixtures begin to touch.
public virtual void BeginContact(Contact contact)
{
//B2_NOT_USED(contact);
}
public Contact(Fixture fixtureA, Fixture fixtureB)
{
Flags = 0;
if (fixtureA.IsSensor || fixtureB.IsSensor)
{
Flags |= ContactFlag.SensorFlag;
}
Body bodyA = fixtureA.GetBody();
Body bodyB = fixtureB.GetBody();
if (bodyA.IsStatic() || bodyA.IsBullet() || bodyB.IsStatic() || bodyB.IsBullet())
{
Flags |= ContactFlag.ContinuousFlag;
}
else
{
Flags &= ~ContactFlag.ContinuousFlag;
}
_fixtureA = fixtureA;
_fixtureB = fixtureB;
Manifold = new Manifold();
Manifold.PointCount = 0;
Prev = null;
Next = null;
NodeA = new ContactEdge();
NodeA.Contact = null;
NodeA.Prev = null;
NodeA.Next = null;
NodeA.Other = null;
NodeB = new ContactEdge();
NodeB.Contact = null;
NodeB.Prev = null;
NodeB.Next = null;
NodeB.Other = null;
}
public ContactSolver(TimeStep step, Contact[] contacts, int contactCount)
{
Step = step;
ConstraintCount = contactCount;
Constraints = new ContactConstraint[ConstraintCount];
for (int i = 0; i < ConstraintCount; ++i)
{
Contact contact = contacts[i];
Fixture fixtureA = contact.GetFixtureA();
Fixture fixtureB = contact.GetFixtureB();
Shape shapeA = fixtureA.GetShape();
Shape shapeB = fixtureB.GetShape();
float radiusA = shapeA._radius;
float radiusB = shapeB._radius;
Body bodyA = fixtureA.GetBody();
Body bodyB = fixtureB.GetBody();
Manifold manifold = contact.GetManifold();
float friction = Settings.MixFriction(fixtureA.GetFriction(), fixtureB.GetFriction());
float restitution = Settings.MixRestitution(fixtureA.GetRestitution(), fixtureB.GetRestitution());
Vec2 vA = bodyA._linearVelocity;
Vec2 vB = bodyB._linearVelocity;
float wA = bodyA._angularVelocity;
float wB = bodyB._angularVelocity;
Box2DXDebug.Assert(manifold.PointCount > 0);
WorldManifold worldManifold = new WorldManifold();
worldManifold.Initialize(manifold, bodyA.GetTransform(), radiusA, bodyB.GetTransform(), radiusB);
ContactConstraint cc = new ContactConstraint();
Constraints[i] = cc;
cc.BodyA = bodyA;
cc.BodyB = bodyB;
cc.Manifold = manifold;
cc.Normal = worldManifold.Normal;
cc.PointCount = manifold.PointCount;
cc.Friction = friction;
cc.Restitution = restitution;
cc.LocalPlaneNormal = manifold.LocalPlaneNormal;
cc.LocalPoint = manifold.LocalPoint;
cc.Radius = radiusA + radiusB;
cc.Type = manifold.Type;
for (int j = 0; j < cc.PointCount; ++j)
{
ManifoldPoint cp = manifold.Points[j];
ContactConstraintPoint ccp = cc.Points[j];
ccp.NormalImpulse = cp.NormalImpulse;
ccp.TangentImpulse = cp.TangentImpulse;
ccp.LocalPoint = cp.LocalPoint;
ccp.RA = worldManifold.Points[j] - bodyA._sweep.C;
ccp.RB = worldManifold.Points[j] - bodyB._sweep.C;
float rnA = Vec2.Cross(ccp.RA, cc.Normal);
float rnB = Vec2.Cross(ccp.RB, cc.Normal);
rnA *= rnA;
rnB *= rnB;
float kNormal = bodyA._invMass + bodyB._invMass + bodyA._invI * rnA + bodyB._invI * rnB;
Box2DXDebug.Assert(kNormal > Settings.FLT_EPSILON);
ccp.NormalMass = 1.0f / kNormal;
float kEqualized = bodyA._mass * bodyA._invMass + bodyB._mass * bodyB._invMass;
kEqualized += bodyA._mass * bodyA._invI * rnA + bodyB._mass * bodyB._invI * rnB;
Box2DXDebug.Assert(kEqualized > Settings.FLT_EPSILON);
ccp.EqualizedMass = 1.0f / kEqualized;
Vec2 tangent = Vec2.Cross(cc.Normal, 1.0f);
float rtA = Vec2.Cross(ccp.RA, tangent);
float rtB = Vec2.Cross(ccp.RB, tangent);
rtA *= rtA;
rtB *= rtB;
float kTangent = bodyA._invMass + bodyB._invMass + bodyA._invI * rtA + bodyB._invI * rtB;
Box2DXDebug.Assert(kTangent > Settings.FLT_EPSILON);
ccp.TangentMass = 1.0f / kTangent;
// Setup a velocity bias for restitution.
ccp.VelocityBias = 0.0f;
float vRel = Vec2.Dot(cc.Normal, vB + Vec2.Cross(wB, ccp.RB) - vA - Vec2.Cross(wA, ccp.RA));
if (vRel < -Settings.VelocityThreshold)
{
ccp.VelocityBias = -cc.Restitution * vRel;
}
}
// If we have two points, then prepare the block solver.
if (cc.PointCount == 2)
{
ContactConstraintPoint ccp1 = cc.Points[0];
ContactConstraintPoint ccp2 = cc.Points[1];
float invMassA = bodyA._invMass;
float invIA = bodyA._invI;
float invMassB = bodyB._invMass;
float invIB = bodyB._invI;
float rn1A = Vec2.Cross(ccp1.RA, cc.Normal);
float rn1B = Vec2.Cross(ccp1.RB, cc.Normal);
float rn2A = Vec2.Cross(ccp2.RA, cc.Normal);
float rn2B = Vec2.Cross(ccp2.RB, cc.Normal);
float k11 = invMassA + invMassB + invIA * rn1A * rn1A + invIB * rn1B * rn1B;
float k22 = invMassA + invMassB + invIA * rn2A * rn2A + invIB * rn2B * rn2B;
float k12 = invMassA + invMassB + invIA * rn1A * rn2A + invIB * rn1B * rn2B;
// Ensure a reasonable condition number.
const float k_maxConditionNumber = 100.0f;
if (k11 * k11 < k_maxConditionNumber * (k11 * k22 - k12 * k12))
{
// K is safe to invert.
cc.K.Col1.Set(k11, k12);
cc.K.Col2.Set(k12, k22);
cc.NormalMass = cc.K.Invert();
}
else
{
// The constraints are redundant, just use one.
// TODO_ERIN use deepest?
cc.PointCount = 1;
}
}
}
}
public static void Destroy(Contact contact)
{
//Box2DXDebug.Assert(s_initialized == true); // COMMENT IS HACK HACK HACK
if (contact.GetManifoldCount() > 0)
{
contact.GetShape1().GetBody().WakeUp();
contact.GetShape2().GetBody().WakeUp();
}
ShapeType type1 = contact.GetShape1().GetType();
ShapeType type2 = contact.GetShape2().GetType();
Box2DXDebug.Assert(ShapeType.UnknownShape < type1 && type1 < ShapeType.ShapeTypeCount);
Box2DXDebug.Assert(ShapeType.UnknownShape < type2 && type2 < ShapeType.ShapeTypeCount);
try
{
ContactDestroyFcn destroyFcn = s_registers[(int)type1][(int)type2].DestroyFcn;
destroyFcn(contact);
}
catch (NullReferenceException e)
{
Console.WriteLine("NullReferenceException caught in Box2DX.Dynamics.Contact#Destroy");
}
}
public void EndContact(Contact contact)
{
if (contact.FixtureA.UserData is IEntity && contact.FixtureB.UserData is IEntity) {
IEntity A = (IEntity)contact.FixtureA.UserData;
IEntity B = (IEntity)contact.FixtureB.UserData;
A.OnSeperate(B);
B.OnSeperate(A);
}
}
public void Add(Contact contact)
{
Box2DXDebug.Assert(_contactCount < _contactCapacity);
_contacts[_contactCount++] = contact;
}
public void PreSolve(Contact contact, Manifold oldManifold)
{
//eh
}
public void Destroy(Contact c)
{
Fixture fixtureA = c.GetFixtureA();
Fixture fixtureB = c.GetFixtureB();
Body body1 = fixtureA.GetBody();
Body body2 = fixtureB.GetBody();
if (c.Manifold.PointCount > 0)
{
_contactListener.EndContact(c);
}
// Remove from the world.
if (c.Prev != null)
{
c.Prev.Next = c.Next;
}
if (c.Next != null)
{
c.Next.Prev = c.Prev;
}
if (c == _contactList)
{
_contactList = c.Next;
}
// Remove from body 1
if (c.NodeA.Prev != null)
{
c.NodeA.Prev.Next = c.NodeA.Next;
}
if (c.NodeA.Next != null)
{
c.NodeA.Next.Prev = c.NodeA.Prev;
}
if (c.NodeA == body1._contactList)
{
body1._contactList = c.NodeA.Next;
}
// Remove from body 2
if (c.NodeB.Prev != null)
{
c.NodeB.Prev.Next = c.NodeB.Next;
}
if (c.NodeB.Next != null)
{
c.NodeB.Next.Prev = c.NodeB.Prev;
}
if (c.NodeB == body2._contactList)
{
body2._contactList = c.NodeB.Next;
}
// Call the factory.
Contact.Destroy(c);
--_contactCount;
}
public void Add(ref Contact contact)
{
Box2DXDebug.Assert(ContactCount < ContactCapacity);
Contacts[ContactCount++] = contact;
}
public static void Destroy(Contact contact)
{
Destroy(contact, contact.GetFixtureA().GetType(), contact.GetFixtureB().GetType());
}
public static new void Destroy(Contact contact)
{
contact = null;
}
/// <summary>
/// Construct a world object.
/// </summary>
/// <param name="worldAABB">A bounding box that completely encompasses all your shapes.</param>
/// <param name="gravity">The world gravity vector.</param>
/// <param name="doSleep">Improve performance by not simulating inactive bodies.</param>
public World(AABB worldAABB, Vec2 gravity, bool doSleep)
{
_destructionListener = null;
_boundaryListener = null;
_contactFilter = WorldCallback.DefaultFilter;
_contactListener = null;
_debugDraw = null;
_bodyList = null;
_contactList = null;
_jointList = null;
_bodyCount = 0;
_contactCount = 0;
_jointCount = 0;
_warmStarting = true;
_continuousPhysics = true;
_allowSleep = doSleep;
_gravity = gravity;
_lock = false;
_inv_dt0 = 0.0f;
_contactManager = new ContactManager();
_contactManager._world = this;
_broadPhase = new BroadPhase(worldAABB, _contactManager);
BodyDef bd = new BodyDef();
_groundBody = CreateBody(bd);
}
