/// <summary>
/// Attaches the bodies with revolute joints.
/// </summary>
/// <param name="world">The world.</param>
/// <param name="bodies">The bodies.</param>
/// <param name="localAnchorA">The local anchor A.</param>
/// <param name="localAnchorB">The local anchor B.</param>
/// <param name="connectFirstAndLast">if set to <c>true</c> [connect first and last].</param>
/// <param name="collideConnected">if set to <c>true</c> [collide connected].</param>
public static List<RevoluteJoint> AttachBodiesWithRevoluteJoint(World world, List<Body> bodies,
Vector2 localAnchorA,
Vector2 localAnchorB, bool connectFirstAndLast,
bool collideConnected)
{
List<RevoluteJoint> joints = new List<RevoluteJoint>(bodies.Count + 1);
for (int i = 1; i < bodies.Count; i++)
{
RevoluteJoint joint = new RevoluteJoint(bodies[i], bodies[i - 1], localAnchorA, localAnchorB);
joint.CollideConnected = collideConnected;
world.AddJoint(joint);
joints.Add(joint);
}
if (connectFirstAndLast)
{
RevoluteJoint lastjoint = new RevoluteJoint(bodies[0], bodies[bodies.Count - 1], localAnchorA,
localAnchorB);
lastjoint.CollideConnected = collideConnected;
world.AddJoint(lastjoint);
joints.Add(lastjoint);
}
return joints;
}
protected override void CreateExtraJoints(World world)
{
rightHandSpring = new FixedMouseJoint(_lowerRightArm, _lowerRightArm.Position);
rightHandSpring.MaxForce = 1000.0f * _lowerRightArm.Mass;
world.AddJoint(rightHandSpring);
leftHandSpring = new FixedMouseJoint(_lowerLeftArm, _lowerLeftArm.Position);
leftHandSpring.MaxForce = 1000.0f * _lowerLeftArm.Mass;
world.AddJoint(leftHandSpring);
}
public override Object PlacePhysicsObject(Microsoft.Xna.Framework.Vector2 position, FarseerPhysics.Dynamics.World world)
{
List <Fixture> list = world.TestPointAll(position);
if (pin.Checked && list.Count > 0)
{
FixedRevoluteJoint j = new FixedRevoluteJoint(list[0].Body, list[0].Body.GetLocalPoint(position), position);
if (motorEnabled.Checked)
{
j.MotorEnabled = true;
float speed;
float maxTorque;
if (float.TryParse(motorSpeed.Text, out speed))
{
j.MotorSpeed = speed;
}
if (float.TryParse(motorTorque.Text, out maxTorque))
{
j.MaxMotorTorque = maxTorque;
}
}
world.AddJoint(j);
return(j);
}
if (list.Count > 1)
{
RevoluteJoint j = new RevoluteJoint(list[0].Body, list[1].Body, list[0].Body.GetLocalPoint(position), list[1].Body.GetLocalPoint(position));
if (motorEnabled.Checked)
{
j.MotorEnabled = true;
float speed;
float maxTorque;
if (float.TryParse(motorSpeed.Text, out speed))
{
j.MotorSpeed = speed;
}
if (float.TryParse(motorTorque.Text, out maxTorque))
{
j.MaxMotorTorque = maxTorque;
}
}
world.AddJoint(j);
return(j);
}
return(base.PlacePhysicsObject(position, world));
}
public static FixedDistanceJoint CreateFixedDistanceJoint(World world, Body body, Vector2 localAnchor,
Vector2 worldAnchor)
{
FixedDistanceJoint distanceJoint = new FixedDistanceJoint(body, localAnchor, worldAnchor);
world.AddJoint(distanceJoint);
return distanceJoint;
}
/// <summary>
/// Creates a fixed angle joint.
/// </summary>
/// <param name="world">The world.</param>
/// <param name="body">The body.</param>
/// <returns></returns>
public static FixedAngleJoint CreateFixedAngleJoint(World world, Body body)
{
FixedAngleJoint angleJoint = new FixedAngleJoint(body);
world.AddJoint(angleJoint);
return angleJoint;
}
public static DistanceJoint CreateDistanceJoint(World world, Body bodyA, Body bodyB, Vector2 anchorA,
Vector2 anchorB)
{
DistanceJoint distanceJoint = new DistanceJoint(bodyA, bodyB, anchorA, anchorB);
world.AddJoint(distanceJoint);
return distanceJoint;
}
/// <summary>
/// Creates an angle joint.
/// </summary>
/// <param name="world">The world.</param>
/// <param name="bodyA">The first body.</param>
/// <param name="bodyB">The second body.</param>
/// <returns></returns>
public static AngleJoint CreateAngleJoint(World world, Body bodyA, Body bodyB)
{
AngleJoint angleJoint = new AngleJoint(bodyA, bodyB);
world.AddJoint(angleJoint);
return angleJoint;
}
public static PulleyJoint CreatePulleyJoint(World world, Body bodyA, Body bodyB, Vector2 anchorA, Vector2 anchorB,
Vector2 worldAnchorA, Vector2 worldAnchorB, float ratio, bool useWorldCoordinates = false)
{
PulleyJoint pulleyJoint = new PulleyJoint(bodyA, bodyB, anchorA, anchorB, worldAnchorA, worldAnchorB, ratio, useWorldCoordinates);
world.AddJoint(pulleyJoint);
return pulleyJoint;
}
public static FrictionJoint CreateFrictionJoint(World world, Body bodyA, Body bodyB, Vector2 anchorA,
Vector2 anchorB)
{
FrictionJoint frictionJoint = new FrictionJoint(bodyA, bodyB, anchorA, anchorB);
world.AddJoint(frictionJoint);
return frictionJoint;
}
public Turret(Vector2 farseerLoc, World w, RagdollManager r, Fixture f)
{
DebugMaterial gray = new DebugMaterial(MaterialType.Blank)
{
Color = Color.DarkGray
};
body = new Body(w);
pivot = FixtureFactory.AttachCircle(.9f, 1, body, gray);
FixtureFactory.AttachRectangle(barrelLength, .5f, 1, new Vector2(barrelLength / 2, 0), body, gray);
body.Position = farseerLoc;
body.BodyType = BodyType.Dynamic;
//b.CollidesWith = Category.None;
if (f == null)
{
motor = JointFactory.CreateFixedRevoluteJoint(w, body, Vector2.Zero, farseerLoc);
}
else
{
motor = new RevoluteJoint(body, f.Body, Vector2.Zero, f.Body.GetLocalPoint(farseerLoc));
w.AddJoint(motor);
}
motor.MotorEnabled = true;
motor.MaxMotorTorque = 5000;
Init(w, r);
}
/// <summary>
/// Creates the fixed revolute joint.
/// </summary>
/// <param name="world">The world.</param>
/// <param name="body">The body.</param>
/// <param name="bodyAnchor">The body anchor.</param>
/// <param name="worldAnchor">The world anchor.</param>
/// <returns></returns>
public static FixedRevoluteJoint CreateFixedRevoluteJoint(World world, Body body, Vector2 bodyAnchor,
Vector2 worldAnchor)
{
FixedRevoluteJoint fixedRevoluteJoint = new FixedRevoluteJoint(body, bodyAnchor, worldAnchor);
world.AddJoint(fixedRevoluteJoint);
return fixedRevoluteJoint;
}
public static FixedPrismaticJoint CreateFixedPrismaticJoint(World world, Body body, Vector2 worldAnchor,
Vector2 axis)
{
FixedPrismaticJoint joint = new FixedPrismaticJoint(body, worldAnchor, axis);
world.AddJoint(joint);
return joint;
}
/// <summary>
/// Creates a revolute joint and adds it to the world
/// </summary>
/// <param name="world"></param>
/// <param name="bodyA"></param>
/// <param name="bodyB"></param>
/// <param name="anchorB"></param>
/// <returns></returns>
public static RevoluteJoint CreateRevoluteJoint(World world, Body bodyA, Body bodyB, Vector2 anchorB)
{
Vector2 localanchorA = bodyA.GetLocalPoint(bodyB.GetWorldPoint(anchorB));
RevoluteJoint joint = new RevoluteJoint(bodyA, bodyB, localanchorA, anchorB);
world.AddJoint(joint);
return joint;
}
/// <summary>
/// Attaches the bodies with revolute joints.
/// </summary>
/// <param name="world">The world.</param>
/// <param name="bodies">The bodies.</param>
/// <param name="localAnchorA">The local anchor A.</param>
/// <param name="localAnchorB">The local anchor B.</param>
/// <param name="connectFirstAndLast">if set to <c>true</c> [connect first and last].</param>
/// <param name="collideConnected">if set to <c>true</c> [collide connected].</param>
public static void AttachBodiesWithSliderJoint(World world, List<Body> bodies, Vector2 localAnchorA,
Vector2 localAnchorB, bool connectFirstAndLast,
bool collideConnected, float minLength, float maxLength)
{
for (int i = 1; i < bodies.Count; i++)
{
SliderJoint joint = new SliderJoint(bodies[i], bodies[i - 1], localAnchorA, localAnchorB, minLength, maxLength);
joint.CollideConnected = collideConnected;
world.AddJoint(joint);
}
if (connectFirstAndLast)
{
SliderJoint lastjoint = new SliderJoint(bodies[0], bodies[bodies.Count - 1], localAnchorA, localAnchorB, minLength, maxLength);
lastjoint.CollideConnected = collideConnected;
world.AddJoint(lastjoint);
}
}
public override void LoadContent(ContentManager content, World physics)
{
base.LoadContent(content, physics);
this.physics.Position = ConvertUnits.ToSimUnits(50, 50);
this.physics.CollisionCategories = Category.Cat1;
this.physics.CollidesWith = Category.Cat1;
fixture = new FixedMouseJoint(this.physics, ConvertUnits.ToSimUnits(new Vector2(50)));
fixture.MaxForce = float.MaxValue;
physics.AddJoint(fixture);
}
public void Update(GameTime gameTime, CameraOperator cameraOperator, World world)
{
_sprite.Body.Center = Input.Mouse.Position;
if (_mouseJoint != null)
{
if (Input.Mouse.IsButtonDown(Input.Mouse.MouseButton.Left))
{
_mouseJoint.WorldAnchorB = cameraOperator.Camera.PositionOnWorld(Input.Mouse.Position);
}
else
{
world.RemoveJoint(_mouseJoint);
_mouseJoint = null;
}
}
else
{
Vector2 cursorWorldPosition = cameraOperator.Camera.PositionOnWorld(Input.Mouse.Position);
if (Input.Mouse.IsButtonClicked(Input.Mouse.MouseButton.Left))
{
Fixture fixture;
float radiusMeters = _sprite.Body.Projection.BoundingBox.Dimensions.X.ToMeters();
if ((fixture =
world.TestPoint(cursorWorldPosition - new Vector2(radiusMeters))) != null ||
(fixture =
world.TestPoint(cursorWorldPosition + new Vector2(radiusMeters))) != null ||
(fixture =
world.TestPoint(cursorWorldPosition + new Vector2(radiusMeters, -radiusMeters))) != null ||
(fixture =
world.TestPoint(cursorWorldPosition - new Vector2(radiusMeters, -radiusMeters))) != null)
{
if (fixture.UserData is Coin)
{
_mouseJoint = new FixedMouseJoint(fixture.Body, cursorWorldPosition)
{
MaxForce = 200*fixture.Body.Mass
};
world.AddJoint(_mouseJoint);
}
}
}
}
}
public SwingPlatform(World world, SwingPlatformData swingPlatformData)
{
width = swingPlatformData.Width;
height = swingPlatformData.Height;
body = BodyFactory.CreateRectangle(world, width, height, 1.0f);
body.Position = swingPlatformData.Center;
body.BodyType = BodyType.Dynamic;
anchor = BodyFactory.CreateCircle(world, 0.1f, 1.0f);
anchor.Position = swingPlatformData.Center;
anchor.BodyType = BodyType.Static;
RevoluteJoint revoluteJoint = new RevoluteJoint(body, anchor, new Vector2(0.0f, 0.0f), new Vector2(0.0f, 0.0f));
revoluteJoint.LowerLimit = -swingPlatformData.MaxAngle;
revoluteJoint.UpperLimit = swingPlatformData.MaxAngle;
revoluteJoint.LimitEnabled = true;
revoluteJoint.MaxMotorTorque = 10.0f;
revoluteJoint.MotorSpeed = 0.0f;
revoluteJoint.MotorEnabled = true;
world.AddJoint(revoluteJoint);
}
public void PopulateWorld(World w) {
foreach (Body b in bodyList) {
b.setWorld(w);
foreach (Fixture f in b.FixtureList)
{
f.Shape.ComputeProperties();
w.FixtureAdded(f);
}
float mass = b.Mass;
//b.ResetMassData();
b.Mass = mass;
b.Enabled = true;
b.Awake = true;
w.AddBody(b);
//w.BodyList.Add(b);
}
w.ProcessChanges();
foreach (Joint j in jointList)
{
w.AddJoint(j);
}
w.ProcessChanges();
}
public void Deserialize(World world, Stream stream)
{
world.Clear();
XMLFragmentElement root = XMLFragmentParser.LoadFromStream(stream);
if (root.Name.ToLower() != "world")
throw new Exception();
foreach (XMLFragmentElement main in root.Elements)
{
if (main.Name.ToLower() == "gravity")
{
world.Gravity = ReadVector(main);
}
}
foreach (XMLFragmentElement shapeElement in root.Elements)
{
if (shapeElement.Name.ToLower() == "shapes")
{
foreach (XMLFragmentElement n in shapeElement.Elements)
{
if (n.Name.ToLower() != "shape")
throw new Exception();
ShapeType type = (ShapeType)Enum.Parse(typeof(ShapeType), n.Attributes[0].Value, true);
switch (type)
{
case ShapeType.Circle:
{
CircleShape shape = new CircleShape();
foreach (XMLFragmentElement sn in n.Elements)
{
switch (sn.Name.ToLower())
{
case "radius":
shape.Radius = float.Parse(sn.Value);
break;
case "position":
shape.Position = ReadVector(sn);
break;
default:
throw new Exception();
}
}
_shapes.Add(shape);
}
break;
case ShapeType.Polygon:
{
PolygonShape shape = new PolygonShape();
foreach (XMLFragmentElement sn in n.Elements)
{
switch (sn.Name.ToLower())
{
case "vertices":
{
List<Vector2> verts = new List<Vector2>();
foreach (XMLFragmentElement vert in sn.Elements)
verts.Add(ReadVector(vert));
shape.Set(new Vertices(verts.ToArray()));
}
break;
case "centroid":
shape.MassData.Centroid = ReadVector(sn);
break;
}
}
_shapes.Add(shape);
}
break;
case ShapeType.Edge:
{
EdgeShape shape = new EdgeShape();
foreach (XMLFragmentElement sn in n.Elements)
{
switch (sn.Name.ToLower())
{
case "hasvertex0":
shape.HasVertex0 = bool.Parse(sn.Value);
break;
case "hasvertex3":
shape.HasVertex0 = bool.Parse(sn.Value);
break;
case "vertex0":
shape.Vertex0 = ReadVector(sn);
break;
case "vertex1":
shape.Vertex1 = ReadVector(sn);
break;
case "vertex2":
shape.Vertex2 = ReadVector(sn);
break;
case "vertex3":
shape.Vertex3 = ReadVector(sn);
break;
default:
throw new Exception();
}
}
_shapes.Add(shape);
}
break;
}
}
}
}
foreach (XMLFragmentElement fixtureElement in root.Elements)
{
if (fixtureElement.Name.ToLower() == "fixtures")
{
foreach (XMLFragmentElement n in fixtureElement.Elements)
{
Fixture fixture = new Fixture();
if (n.Name.ToLower() != "fixture")
throw new Exception();
foreach (XMLFragmentElement sn in n.Elements)
{
switch (sn.Name.ToLower())
{
case "shape":
fixture.Shape = _shapes[int.Parse(sn.Value)];
break;
case "density":
fixture.Shape.Density = float.Parse(sn.Value);
break;
case "filterdata":
foreach (XMLFragmentElement ssn in sn.Elements)
{
switch (ssn.Name.ToLower())
{
case "categorybits":
fixture._collisionCategories = (Category)int.Parse(ssn.Value);
break;
case "maskbits":
fixture._collidesWith = (Category)int.Parse(ssn.Value);
break;
case "groupindex":
fixture._collisionGroup = short.Parse(ssn.Value);
break;
}
}
break;
case "friction":
fixture.Friction = float.Parse(sn.Value);
break;
case "issensor":
fixture.IsSensor = bool.Parse(sn.Value);
break;
case "restitution":
fixture.Restitution = float.Parse(sn.Value);
break;
case "userdata":
fixture.UserData = ReadSimpleType(sn, null, false);
break;
}
}
_fixtures.Add(fixture);
}
}
}
foreach (XMLFragmentElement bodyElement in root.Elements)
{
if (bodyElement.Name.ToLower() == "bodies")
{
foreach (XMLFragmentElement n in bodyElement.Elements)
{
Body body = new Body(world);
if (n.Name.ToLower() != "body")
throw new Exception();
body.BodyType = (BodyType)Enum.Parse(typeof(BodyType), n.Attributes[0].Value, true);
foreach (XMLFragmentElement sn in n.Elements)
{
switch (sn.Name.ToLower())
{
case "active":
if (bool.Parse(sn.Value))
body.Flags |= BodyFlags.Enabled;
else
body.Flags &= ~BodyFlags.Enabled;
break;
case "allowsleep":
body.SleepingAllowed = bool.Parse(sn.Value);
break;
case "angle":
{
Vector2 position = body.Position;
body.SetTransformIgnoreContacts(ref position, float.Parse(sn.Value));
}
break;
case "angulardamping":
body.AngularDamping = float.Parse(sn.Value);
break;
case "angularvelocity":
body.AngularVelocity = float.Parse(sn.Value);
break;
case "awake":
body.Awake = bool.Parse(sn.Value);
break;
case "bullet":
body.IsBullet = bool.Parse(sn.Value);
break;
case "fixedrotation":
body.FixedRotation = bool.Parse(sn.Value);
break;
case "lineardamping":
body.LinearDamping = float.Parse(sn.Value);
break;
case "linearvelocity":
body.LinearVelocity = ReadVector(sn);
break;
case "position":
{
float rotation = body.Rotation;
Vector2 position = ReadVector(sn);
body.SetTransformIgnoreContacts(ref position, rotation);
}
break;
case "userdata":
body.UserData = ReadSimpleType(sn, null, false);
break;
case "fixtures":
{
foreach (XMLFragmentElement v in sn.Elements)
{
Fixture blueprint = _fixtures[int.Parse(v.Value)];
Fixture f = new Fixture(body, blueprint.Shape, blueprint.CollisionCategories);
f.Restitution = blueprint.Restitution;
f.UserData = blueprint.UserData;
f.Friction = blueprint.Friction;
f.CollidesWith = blueprint.CollidesWith;
f.CollisionGroup = blueprint.CollisionGroup;
}
break;
}
}
}
_bodies.Add(body);
}
}
}
foreach (XMLFragmentElement jointElement in root.Elements)
{
if (jointElement.Name.ToLower() == "joints")
{
foreach (XMLFragmentElement n in jointElement.Elements)
{
Joint joint;
if (n.Name.ToLower() != "joint")
throw new Exception();
JointType type = (JointType)Enum.Parse(typeof(JointType), n.Attributes[0].Value, true);
int bodyAIndex = -1, bodyBIndex = -1;
bool collideConnected = false;
object userData = null;
foreach (XMLFragmentElement sn in n.Elements)
{
switch (sn.Name.ToLower())
{
case "bodya":
bodyAIndex = int.Parse(sn.Value);
break;
case "bodyb":
bodyBIndex = int.Parse(sn.Value);
break;
case "collideconnected":
collideConnected = bool.Parse(sn.Value);
break;
case "userdata":
userData = ReadSimpleType(sn, null, false);
break;
}
}
Body bodyA = _bodies[bodyAIndex];
Body bodyB = _bodies[bodyBIndex];
switch (type)
{
case JointType.Distance:
joint = new DistanceJoint();
break;
case JointType.Friction:
joint = new FrictionJoint();
break;
case JointType.Line:
joint = new LineJoint();
break;
case JointType.Prismatic:
joint = new PrismaticJoint();
break;
case JointType.Pulley:
joint = new PulleyJoint();
break;
case JointType.Revolute:
joint = new RevoluteJoint();
break;
case JointType.Weld:
joint = new WeldJoint();
break;
case JointType.Rope:
joint = new RopeJoint();
break;
case JointType.Angle:
joint = new AngleJoint();
break;
case JointType.Slider:
joint = new SliderJoint();
break;
case JointType.Gear:
throw new Exception("GearJoint is not supported.");
default:
throw new Exception("Invalid or unsupported joint.");
}
joint.CollideConnected = collideConnected;
joint.UserData = userData;
joint.BodyA = bodyA;
joint.BodyB = bodyB;
_joints.Add(joint);
world.AddJoint(joint);
foreach (XMLFragmentElement sn in n.Elements)
{
// check for specific nodes
switch (type)
{
case JointType.Distance:
{
switch (sn.Name.ToLower())
{
case "dampingratio":
((DistanceJoint)joint).DampingRatio = float.Parse(sn.Value);
break;
case "frequencyhz":
((DistanceJoint)joint).Frequency = float.Parse(sn.Value);
break;
case "length":
((DistanceJoint)joint).Length = float.Parse(sn.Value);
break;
case "localanchora":
((DistanceJoint)joint).LocalAnchorA = ReadVector(sn);
break;
case "localanchorb":
((DistanceJoint)joint).LocalAnchorB = ReadVector(sn);
break;
}
}
break;
case JointType.Friction:
{
switch (sn.Name.ToLower())
{
case "localanchora":
((FrictionJoint)joint).LocalAnchorA = ReadVector(sn);
break;
case "localanchorb":
((FrictionJoint)joint).LocalAnchorB = ReadVector(sn);
break;
case "maxforce":
((FrictionJoint)joint).MaxForce = float.Parse(sn.Value);
break;
case "maxtorque":
((FrictionJoint)joint).MaxTorque = float.Parse(sn.Value);
break;
}
}
break;
case JointType.Line:
{
switch (sn.Name.ToLower())
{
case "enablemotor":
((LineJoint)joint).MotorEnabled = bool.Parse(sn.Value);
break;
case "localanchora":
((LineJoint)joint).LocalAnchorA = ReadVector(sn);
break;
case "localanchorb":
((LineJoint)joint).LocalAnchorB = ReadVector(sn);
break;
case "motorspeed":
((LineJoint)joint).MotorSpeed = float.Parse(sn.Value);
break;
case "dampingratio":
((LineJoint)joint).DampingRatio = float.Parse(sn.Value);
break;
case "maxmotortorque":
((LineJoint)joint).MaxMotorTorque = float.Parse(sn.Value);
break;
case "frequencyhz":
((LineJoint)joint).Frequency = float.Parse(sn.Value);
break;
case "localxaxis":
((LineJoint)joint).LocalXAxis = ReadVector(sn);
break;
}
}
break;
case JointType.Prismatic:
{
switch (sn.Name.ToLower())
{
case "enablelimit":
((PrismaticJoint)joint).LimitEnabled = bool.Parse(sn.Value);
break;
case "enablemotor":
((PrismaticJoint)joint).MotorEnabled = bool.Parse(sn.Value);
break;
case "localanchora":
((PrismaticJoint)joint).LocalAnchorA = ReadVector(sn);
break;
case "localanchorb":
((PrismaticJoint)joint).LocalAnchorB = ReadVector(sn);
break;
case "local1axis1":
((PrismaticJoint)joint).LocalXAxis1 = ReadVector(sn);
break;
case "maxmotorforce":
((PrismaticJoint)joint).MaxMotorForce = float.Parse(sn.Value);
break;
case "motorspeed":
((PrismaticJoint)joint).MotorSpeed = float.Parse(sn.Value);
break;
case "lowertranslation":
((PrismaticJoint)joint).LowerLimit = float.Parse(sn.Value);
break;
case "uppertranslation":
((PrismaticJoint)joint).UpperLimit = float.Parse(sn.Value);
break;
case "referenceangle":
((PrismaticJoint)joint).ReferenceAngle = float.Parse(sn.Value);
break;
}
}
break;
case JointType.Pulley:
{
switch (sn.Name.ToLower())
{
case "groundanchora":
((PulleyJoint)joint).GroundAnchorA = ReadVector(sn);
break;
case "groundanchorb":
((PulleyJoint)joint).GroundAnchorB = ReadVector(sn);
break;
case "lengtha":
((PulleyJoint)joint).LengthA = float.Parse(sn.Value);
break;
case "lengthb":
((PulleyJoint)joint).LengthB = float.Parse(sn.Value);
break;
case "localanchora":
((PulleyJoint)joint).LocalAnchorA = ReadVector(sn);
break;
case "localanchorb":
((PulleyJoint)joint).LocalAnchorB = ReadVector(sn);
break;
case "maxlengtha":
((PulleyJoint)joint).MaxLengthA = float.Parse(sn.Value);
break;
case "maxlengthb":
((PulleyJoint)joint).MaxLengthB = float.Parse(sn.Value);
break;
case "ratio":
((PulleyJoint)joint).Ratio = float.Parse(sn.Value);
break;
}
}
break;
case JointType.Revolute:
{
switch (sn.Name.ToLower())
{
case "enablelimit":
((RevoluteJoint)joint).LimitEnabled = bool.Parse(sn.Value);
break;
case "enablemotor":
((RevoluteJoint)joint).MotorEnabled = bool.Parse(sn.Value);
break;
case "localanchora":
((RevoluteJoint)joint).LocalAnchorA = ReadVector(sn);
break;
case "localanchorb":
((RevoluteJoint)joint).LocalAnchorB = ReadVector(sn);
break;
case "maxmotortorque":
((RevoluteJoint)joint).MaxMotorTorque = float.Parse(sn.Value);
break;
case "motorspeed":
((RevoluteJoint)joint).MotorSpeed = float.Parse(sn.Value);
break;
case "lowerangle":
((RevoluteJoint)joint).LowerLimit = float.Parse(sn.Value);
break;
case "upperangle":
((RevoluteJoint)joint).UpperLimit = float.Parse(sn.Value);
break;
case "referenceangle":
((RevoluteJoint)joint).ReferenceAngle = float.Parse(sn.Value);
break;
}
}
break;
case JointType.Weld:
{
switch (sn.Name.ToLower())
{
case "localanchora":
((WeldJoint)joint).LocalAnchorA = ReadVector(sn);
break;
case "localanchorb":
((WeldJoint)joint).LocalAnchorB = ReadVector(sn);
break;
}
}
break;
case JointType.Rope:
{
switch (sn.Name.ToLower())
{
case "localanchora":
((RopeJoint)joint).LocalAnchorA = ReadVector(sn);
break;
case "localanchorb":
((RopeJoint)joint).LocalAnchorB = ReadVector(sn);
break;
case "maxlength":
((RopeJoint)joint).MaxLength = float.Parse(sn.Value);
break;
}
}
break;
case JointType.Gear:
throw new Exception("Gear joint is unsupported");
case JointType.Angle:
{
switch (sn.Name.ToLower())
{
case "biasfactor":
((AngleJoint)joint).BiasFactor = float.Parse(sn.Value);
break;
case "maximpulse":
((AngleJoint)joint).MaxImpulse = float.Parse(sn.Value);
break;
case "softness":
((AngleJoint)joint).Softness = float.Parse(sn.Value);
break;
case "targetangle":
((AngleJoint)joint).TargetAngle = float.Parse(sn.Value);
break;
}
}
break;
case JointType.Slider:
{
switch (sn.Name.ToLower())
{
case "dampingratio":
((SliderJoint)joint).DampingRatio = float.Parse(sn.Value);
break;
case "frequencyhz":
((SliderJoint)joint).Frequency = float.Parse(sn.Value);
break;
case "maxlength":
((SliderJoint)joint).MaxLength = float.Parse(sn.Value);
break;
case "minlength":
((SliderJoint)joint).MinLength = float.Parse(sn.Value);
break;
case "localanchora":
((SliderJoint)joint).LocalAnchorA = ReadVector(sn);
break;
case "localanchorb":
((SliderJoint)joint).LocalAnchorB = ReadVector(sn);
break;
}
}
break;
}
}
}
}
}
}
private void CreateJoints(World world)
{
const float dampingRatio = 1;
const float frequency = 25;
//head -> body
DistanceJoint jHeadBody = new DistanceJoint(_head.Body, _body[0].Body,
new Vector2(0, -1), new Vector2(0, 2));
jHeadBody.CollideConnected = true;
jHeadBody.DampingRatio = dampingRatio;
jHeadBody.Frequency = frequency;
jHeadBody.Length = 0.025f;
world.AddJoint(jHeadBody);
//lowerLeftArm -> upperLeftArm
DistanceJoint jLeftArm = new DistanceJoint(_lowerLeftArm[0].Body, _upperLeftArm[0].Body,
new Vector2(0, 1), new Vector2(0, -1));
jLeftArm.CollideConnected = true;
jLeftArm.DampingRatio = dampingRatio;
jLeftArm.Frequency = frequency;
jLeftArm.Length = 0.02f;
world.AddJoint(jLeftArm);
//upperLeftArm -> body
DistanceJoint jLeftArmBody = new DistanceJoint(_upperLeftArm[0].Body, _body[0].Body,
new Vector2(0, 1), new Vector2(-1, 1.5f));
jLeftArmBody.CollideConnected = true;
jLeftArmBody.DampingRatio = dampingRatio;
jLeftArmBody.Frequency = frequency;
jLeftArmBody.Length = 0.02f;
world.AddJoint(jLeftArmBody);
//lowerRightArm -> upperRightArm
DistanceJoint jRightArm = new DistanceJoint(_lowerRightArm[0].Body, _upperRightArm[0].Body,
new Vector2(0, 1), new Vector2(0, -1));
jRightArm.CollideConnected = true;
jRightArm.DampingRatio = dampingRatio;
jRightArm.Frequency = frequency;
jRightArm.Length = 0.02f;
world.AddJoint(jRightArm);
//upperRightArm -> body
DistanceJoint jRightArmBody = new DistanceJoint(_upperRightArm[0].Body, _body[0].Body,
new Vector2(0, 1), new Vector2(1, 1.5f));
jRightArmBody.CollideConnected = true;
jRightArmBody.DampingRatio = dampingRatio;
jRightArmBody.Frequency = 25;
jRightArmBody.Length = 0.02f;
world.AddJoint(jRightArmBody);
//lowerLeftLeg -> upperLeftLeg
DistanceJoint jLeftLeg = new DistanceJoint(_lowerLeftLeg[0].Body, _upperLeftLeg[0].Body,
new Vector2(0, 1.1f), new Vector2(0, -1));
jLeftLeg.CollideConnected = true;
jLeftLeg.DampingRatio = dampingRatio;
jLeftLeg.Frequency = frequency;
jLeftLeg.Length = 0.05f;
world.AddJoint(jLeftLeg);
//upperLeftLeg -> body
DistanceJoint jLeftLegBody = new DistanceJoint(_upperLeftLeg[0].Body, _body[0].Body,
new Vector2(0, 1.1f), new Vector2(-0.8f, -1.9f));
jLeftLegBody.CollideConnected = true;
jLeftLegBody.DampingRatio = dampingRatio;
jLeftLegBody.Frequency = frequency;
jLeftLegBody.Length = 0.02f;
world.AddJoint(jLeftLegBody);
//lowerRightleg -> upperRightleg
DistanceJoint jRightLeg = new DistanceJoint(_lowerRightLeg[0].Body, _upperRightLeg[0].Body,
new Vector2(0, 1.1f), new Vector2(0, -1));
jRightLeg.CollideConnected = true;
jRightLeg.DampingRatio = dampingRatio;
jRightLeg.Frequency = frequency;
jRightLeg.Length = 0.05f;
world.AddJoint(jRightLeg);
//upperRightleg -> body
DistanceJoint jRightLegBody = new DistanceJoint(_upperRightLeg[0].Body, _body[0].Body,
new Vector2(0, 1.1f), new Vector2(0.8f, -1.9f));
jRightLegBody.CollideConnected = true;
jRightLegBody.DampingRatio = dampingRatio;
jRightLegBody.Frequency = frequency;
jRightLegBody.Length = 0.02f;
world.AddJoint(jRightLegBody);
}
public WebOfGoo(World world, Vector2 position, float radius, int rings, int sides)
{
_ringBodys = new List<List<Body>>(rings);
_ringJoints = new List<DistanceJoint>();
for (int i = 1; i < rings; i++)
{
Vertices vertices = PolygonTools.CreateCircle(i * 2.9f, sides);
vertices.Translate(ref position);
List<Body> bodies = new List<Body>(sides);
//Create the first goo
Body previous = BodyFactory.CreateCircle(world, radius, 0.2f, vertices[0]);
previous.BodyType = BodyType.Dynamic;
bodies.Add(previous);
//Connect the first goo to the next
for (int j = 1; j < vertices.Count; j++)
{
Body current = BodyFactory.CreateCircle(world, radius, 0.2f, vertices[j]);
current.BodyType = BodyType.Dynamic;
DistanceJoint joint = new DistanceJoint(previous, current, Vector2.Zero, Vector2.Zero);
joint.Frequency = 4.0f;
joint.DampingRatio = 0.5f;
joint.Breakpoint = Breakpoint;
world.AddJoint(joint);
_ringJoints.Add(joint);
previous = current;
bodies.Add(current);
}
//Connect the first and the last goo
DistanceJoint jointClose = new DistanceJoint(bodies[0], bodies[bodies.Count - 1], Vector2.Zero, Vector2.Zero);
jointClose.Frequency = 4.0f;
jointClose.DampingRatio = 0.5f;
jointClose.Breakpoint = Breakpoint;
world.AddJoint(jointClose);
_ringJoints.Add(jointClose);
_ringBodys.Add(bodies);
}
//Create an outer ring
Vertices frame = PolygonTools.CreateCircle(rings * 2.9f - 0.9f, sides);
frame.Translate(ref position);
Body anchor = new Body(world, position);
anchor.BodyType = BodyType.Static;
//Attach the outer ring to the anchor
for (int i = 0; i < _ringBodys[rings - 2].Count; i++)
{
DistanceJoint joint = new DistanceJoint(anchor, _ringBodys[rings - 2][i], frame[i], _ringBodys[rings - 2][i].Position, true);
joint.Frequency = 8.0f;
joint.DampingRatio = 0.5f;
joint.Breakpoint = Breakpoint;
world.AddJoint(joint);
_ringJoints.Add(joint);
}
//Interconnect the rings
for (int i = 1; i < _ringBodys.Count; i++)
{
for (int j = 0; j < sides; j++)
{
DistanceJoint joint = new DistanceJoint(_ringBodys[i - 1][j], _ringBodys[i][j], Vector2.Zero, Vector2.Zero);
joint.Frequency = 4.0f;
joint.DampingRatio = 0.5f;
joint.Breakpoint = Breakpoint;
world.AddJoint(joint);
_ringJoints.Add(joint);
}
}
_link = new Sprite(ContentWrapper.GetTexture("Link"));
_goo = new Sprite(ContentWrapper.GetTexture("Goo"));
}
private void CreateChassis(World world, Vector2 pivot, AssetCreator assets)
{
{
PolygonShape shape = new PolygonShape(1f);
shape.Vertices = PolygonTools.CreateRectangle(2.5f, 1.0f);
_body = new Sprite(assets.TextureFromShape(shape, MaterialType.Blank, Color.Beige, 1f));
_chassis = BodyFactory.CreateBody(world);
_chassis.BodyType = BodyType.Dynamic;
_chassis.Position = pivot + _position;
Fixture fixture = _chassis.CreateFixture(shape);
fixture.CollisionGroup = -1;
}
{
CircleShape shape = new CircleShape(1.6f, 1f);
_engine = new Sprite(assets.TextureFromShape(shape, MaterialType.Waves, Color.Beige * 0.8f, 1f));
_wheel = BodyFactory.CreateBody(world);
_wheel.BodyType = BodyType.Dynamic;
_wheel.Position = pivot + _position;
Fixture fixture = _wheel.CreateFixture(shape);
fixture.CollisionGroup = -1;
}
{
_motorJoint = new RevoluteJoint(_wheel, _chassis, _wheel.GetLocalPoint(_chassis.Position), Vector2.Zero);
_motorJoint.CollideConnected = false;
_motorJoint.MotorSpeed = _motorSpeed;
_motorJoint.MaxMotorTorque = 400f;
_motorJoint.MotorEnabled = true;
world.AddJoint(_motorJoint);
}
}
private void CreateLeg(World world, float direction, Vector2 wheelAnchor, int index)
{
Vector2 p1 = new Vector2(5.4f * direction, 6.1f);
Vector2 p2 = new Vector2(7.2f * direction, 1.2f);
Vector2 p3 = new Vector2(4.3f * direction, 1.9f);
Vector2 p4 = new Vector2(3.1f * direction, -0.8f);
Vector2 p5 = new Vector2(6.0f * direction, -1.5f);
Vector2 p6 = new Vector2(2.5f * direction, -3.7f);
PolygonShape shoulderPolygon;
PolygonShape legPolygon;
Vertices vertices = new Vertices(3);
if (direction < 0f)
{
vertices.Add(p1);
vertices.Add(p2);
vertices.Add(p3);
shoulderPolygon = new PolygonShape(vertices, 1);
vertices[0] = Vector2.Zero;
vertices[1] = p5 - p4;
vertices[2] = p6 - p4;
legPolygon = new PolygonShape(vertices, 2);
}
else
{
vertices.Add(p1);
vertices.Add(p3);
vertices.Add(p2);
shoulderPolygon = new PolygonShape(vertices, 1);
vertices[0] = Vector2.Zero;
vertices[1] = p6 - p4;
vertices[2] = p5 - p4;
legPolygon = new PolygonShape(vertices, 2);
}
Body leg = BodyFactory.CreateBody(world);
leg.BodyType = BodyType.Dynamic;
leg.Position = _position;
leg.AngularDamping = 10f;
if (direction < 0f)
_leftLegs[index] = leg;
else
_rightLegs[index] = leg;
Body shoulder = BodyFactory.CreateBody(world);
shoulder.BodyType = BodyType.Dynamic;
shoulder.Position = p4 + _position;
shoulder.AngularDamping = 10f;
if (direction < 0f)
_leftShoulders[index] = shoulder;
else
_rightShoulders[index] = shoulder;
Fixture f1 = leg.CreateFixture(shoulderPolygon);
f1.CollisionGroup = -1;
Fixture f2 = shoulder.CreateFixture(legPolygon);
f2.CollisionGroup = -1;
// Using a soft distanceraint can reduce some jitter.
// It also makes the structure seem a bit more fluid by
// acting like a suspension system.
DistanceJoint djd = new DistanceJoint(leg, shoulder, leg.GetLocalPoint(p2 + _position), shoulder.GetLocalPoint(p5 + _position));
djd.DampingRatio = 0.5f;
djd.Frequency = 10f;
world.AddJoint(djd);
_walkerJoints.Add(djd);
DistanceJoint djd2 = new DistanceJoint(leg, shoulder, leg.GetLocalPoint(p3 + _position), shoulder.GetLocalPoint(p4 + _position));
djd2.DampingRatio = 0.5f;
djd2.Frequency = 10f;
world.AddJoint(djd2);
_walkerJoints.Add(djd2);
DistanceJoint djd3 = new DistanceJoint(leg, _wheel, leg.GetLocalPoint(p3 + _position), _wheel.GetLocalPoint(wheelAnchor + _position));
djd3.DampingRatio = 0.5f;
djd3.Frequency = 10f;
world.AddJoint(djd3);
_walkerJoints.Add(djd3);
DistanceJoint djd4 = new DistanceJoint(shoulder, _wheel, shoulder.GetLocalPoint(p6 + _position), _wheel.GetLocalPoint(wheelAnchor + _position));
djd4.DampingRatio = 0.5f;
djd4.Frequency = 10f;
world.AddJoint(djd4);
_walkerJoints.Add(djd4);
Vector2 anchor = p4 - new Vector2(0f, -0.8f);
RevoluteJoint rjd = new RevoluteJoint(shoulder, _chassis, shoulder.GetLocalPoint(_chassis.GetWorldPoint(anchor)), anchor);
world.AddJoint(rjd);
}
Joint j2b2Joint(World world, JObject jointValue)
{
Joint joint = null;
int bodyIndexA = (int)jointValue["bodyA"];
int bodyIndexB = (int)jointValue["bodyB"];
if (bodyIndexA >= m_bodies.Count || bodyIndexB >= m_bodies.Count)
return null;
// set features common to all joints
var bodyA = m_bodies[bodyIndexA];
var bodyB = m_bodies[bodyIndexB];
var collideConnected = jointValue["collideConnected"] == null ? false : (bool)jointValue["collideConnected"];
// keep these in scope after the if/else below
RevoluteJoint revoluteDef;
PrismaticJoint prismaticDef;
DistanceJoint distanceDef;
PulleyJoint pulleyDef;
FixedMouseJoint mouseDef;
GearJoint gearDef;
WheelJoint wheelDef;
WeldJoint weldDef;
FrictionJoint frictionDef;
RopeJoint ropeDef;
MotorJoint motorDef;
Vector2 mouseJointTarget = new Vector2(0, 0);
string type = jointValue["type"].ToString() == null ? "" : jointValue["type"].ToString();
if (type == "revolute")
{
joint = revoluteDef = JointFactory.CreateRevoluteJoint(world, bodyA, bodyB, jsonToVec("anchorB", jointValue));
revoluteDef.LocalAnchorA = jsonToVec("anchorA", jointValue);
revoluteDef.LocalAnchorB = jsonToVec("anchorB", jointValue);
revoluteDef.ReferenceAngle = jsonToFloat("refAngle", jointValue);
revoluteDef.LimitEnabled = jointValue["enableLimit"] == null ? false : (bool)jointValue["enableLimit"];
revoluteDef.LowerLimit = jsonToFloat("lowerLimit", jointValue);
revoluteDef.UpperLimit = jsonToFloat("upperLimit", jointValue);
revoluteDef.MotorEnabled = jointValue["enableMotor"] == null ? false : (bool)jointValue["enableMotor"];
revoluteDef.MotorSpeed = jsonToFloat("motorSpeed", jointValue);
revoluteDef.MaxMotorTorque = jsonToFloat("maxMotorTorque", jointValue);
}
else if (type == "prismatic")
{
var localAxis = new Vector2();
var localAnchorA = jsonToVec("anchorA", jointValue);
var localAnchorB = jsonToVec("anchorB", jointValue);
if (jointValue["localAxisA"] != null)
localAxis = jsonToVec("localAxisA", jointValue);
else
localAxis = jsonToVec("localAxis1", jointValue);
joint = prismaticDef = JointFactory.CreatePrismaticJoint(world, bodyA, bodyB, localAnchorB, localAxis);
prismaticDef.LocalAnchorA = localAnchorA;
prismaticDef.ReferenceAngle = jsonToFloat("refAngle", jointValue);
prismaticDef.LimitEnabled = (bool)jointValue["enableLimit"];
prismaticDef.LowerLimit = jsonToFloat("lowerLimit", jointValue);
prismaticDef.UpperLimit = jsonToFloat("upperLimit", jointValue);
prismaticDef.MotorEnabled = (bool)jointValue["enableMotor"];
prismaticDef.MotorSpeed = jsonToFloat("motorSpeed", jointValue);
prismaticDef.MaxMotorForce = jsonToFloat("maxMotorForce", jointValue);
}
else if (type == "distance")
{
joint = distanceDef = JointFactory.CreateDistanceJoint(world, bodyA, bodyB, jsonToVec("anchorA", jointValue), jsonToVec("anchorB", jointValue));
distanceDef.LocalAnchorA = (jsonToVec("anchorA", jointValue));
distanceDef.LocalAnchorB = (jsonToVec("anchorB", jointValue));
distanceDef.Length = jsonToFloat("length", jointValue);
distanceDef.Frequency = jsonToFloat("frequency", jointValue);
distanceDef.DampingRatio = jsonToFloat("dampingRatio", jointValue);
}
else if (type == "pulley")
{
joint = pulleyDef = JointFactory.CreatePulleyJoint(world, bodyA, bodyB,
jsonToVec("groundAnchorA", jointValue), jsonToVec("groundAnchorB", jointValue),
jsonToVec("anchorA", jointValue), jsonToVec("anchorB", jointValue),
jsonToFloat("ratio", jointValue));
pulleyDef.LengthA = jsonToFloat("lengthA", jointValue);
pulleyDef.LengthB = jsonToFloat("lengthB", jointValue);
//pulleyDef.Ratio = jsonToFloat("ratio", jointValue);
}
else if (type == "mouse")
{
joint = mouseDef = JointFactory.CreateFixedMouseJoint(world, bodyA, jsonToVec("target", jointValue));
//mouseJointTarget = jsonToVec("target", jointValue);
//mouseDef.target.set(jsonToVec("anchorB", jointValue));// alter after creating joint
mouseDef.MaxForce = jsonToFloat("maxForce", jointValue);
mouseDef.Frequency = jsonToFloat("frequency", jointValue);
mouseDef.DampingRatio = jsonToFloat("dampingRatio", jointValue);
}
// Gear joints are apparently not implemented in JBox2D yet, but
// when they are, commenting out the following section should work.
else if (type == "gear")
{
int jointIndex1 = (int)jointValue["joint1"];
int jointIndex2 = (int)jointValue["joint2"];
var joint1 = m_joints[jointIndex1];
var joint2 = m_joints[jointIndex2];
var ratio = jsonToFloat("ratio", jointValue);
joint = gearDef = JointFactory.CreateGearJoint(world, joint1, joint2, ratio);
}
// Wheel joints are apparently not implemented in JBox2D yet, but
// when they are, commenting out the following section should work.
else if (type == "wheel")
{
var localAnchorA = jsonToVec("anchorA", jointValue);
var localAnchorB = (jsonToVec("anchorB", jointValue));
var localAxisA = (jsonToVec("localAxisA", jointValue));
var enableMotor = jointValue["enableMotor"] == null ? false : (bool)jointValue["enableMotor"];
var motorSpeed = jsonToFloat("motorSpeed", jointValue);
var maxMotorTorque = jsonToFloat("maxMotorTorque", jointValue);
var frequencyHz = jsonToFloat("springFrequency", jointValue);
var dampingRatio = jsonToFloat("springDampingRatio", jointValue);
joint = wheelDef = JointFactory.CreateWheelJoint(world, bodyA, bodyB, localAnchorB, localAxisA);
wheelDef.LocalAnchorA = localAnchorA;
wheelDef.LocalAnchorB = localAnchorB;
wheelDef.MotorEnabled = enableMotor;
wheelDef.MotorSpeed = motorSpeed;
wheelDef.SpringFrequencyHz = frequencyHz;
wheelDef.MaxMotorTorque = maxMotorTorque;
wheelDef.SpringDampingRatio = dampingRatio;
}
else if (type == "weld")
{
joint = weldDef = JointFactory.CreateWeldJoint(world, bodyA, bodyB, jsonToVec("anchorA", jointValue), jsonToVec("anchorB", jointValue));
weldDef.LocalAnchorA = jsonToVec("anchorA", jointValue);
weldDef.LocalAnchorB = jsonToVec("anchorB", jointValue);
weldDef.FrequencyHz = jsonToFloat("frequency", jointValue);
weldDef.DampingRatio = jsonToFloat("dampingRatio", jointValue);
}
else if (type == "friction")
{
joint = frictionDef = JointFactory.CreateFrictionJoint(world, bodyA, bodyB, jsonToVec("anchorA", jointValue));
frictionDef.LocalAnchorB = jsonToVec("anchorB", jointValue);
frictionDef.MaxForce = jsonToFloat("maxForce", jointValue);
frictionDef.MaxTorque = jsonToFloat("maxTorque", jointValue);
}
else if (type == "rope")
{
joint = ropeDef = new RopeJoint(bodyA, bodyB, jsonToVec("anchorA", jointValue), jsonToVec("anchorB", jointValue));
world.AddJoint(joint);
ropeDef.MaxLength = jsonToFloat("maxLength", jointValue);
}
else if (type == "motor")
{
var maxForce = jsonToFloat("maxForce", jointValue);
var maxMotorTorque = jsonToFloat("maxTorque", jointValue);
var angularOffset = jsonToFloat("refAngle", jointValue);
joint = motorDef = new MotorJoint(bodyA, bodyB);
world.AddJoint(joint);
motorDef.LinearOffset = jsonToVec("anchorA", jointValue);
motorDef.MaxForce = maxForce;
motorDef.MaxTorque = maxMotorTorque;
motorDef.AngularOffset = angularOffset;
}
if (null != joint)
{
// set features common to all joints
/*joint.BodyA = bodyA;
joint.BodyB = bodyB;*/
joint.CollideConnected = collideConnected;
string jointName = jointValue["name"] == null ? "" : jointValue["name"].ToString();
if (jointName != "")
{
SetJointName(joint, jointName);
}
}
return joint;
}
public static RopeJoint CreateRopeJoint(World world, Body bodyA, Body bodyB, Vector2 anchorA, Vector2 anchorB, bool useWorldCoordinates = false)
{
RopeJoint ropeJoint = new RopeJoint(bodyA, bodyB, anchorA, anchorB, useWorldCoordinates);
world.AddJoint(ropeJoint);
return ropeJoint;
}
public static RevoluteJoint CreateRevoluteJoint(World world, Body bodyA, Body bodyB, Vector2 anchorA, Vector2 anchorB, bool useWorldCoordinates = false)
{
RevoluteJoint joint = new RevoluteJoint(bodyA, bodyB, anchorA, anchorB, useWorldCoordinates);
world.AddJoint(joint);
return joint;
}
public static PrismaticJoint CreatePrismaticJoint(World world, Body bodyA, Body bodyB, Vector2 anchor, Vector2 axis, bool useWorldCoordinates = false)
{
PrismaticJoint joint = new PrismaticJoint(bodyA, bodyB, anchor, axis, useWorldCoordinates);
world.AddJoint(joint);
return joint;
}
public static MotorJoint CreateMotorJoint(World world, Body bodyA, Body bodyB, bool useWorldCoordinates = false)
{
MotorJoint joint = new MotorJoint(bodyA, bodyB, useWorldCoordinates);
world.AddJoint(joint);
return joint;
}
public static GearJoint CreateGearJoint(World world, Body bodyA, Body bodyB, Joint jointA, Joint jointB, float ratio)
{
GearJoint gearJoint = new GearJoint(bodyA, bodyB, jointA, jointB, ratio);
world.AddJoint(gearJoint);
return gearJoint;
}
public static FrictionJoint CreateFrictionJoint(World world, Body bodyA, Body bodyB, Vector2 anchor, bool useWorldCoordinates = false)
{
FrictionJoint frictionJoint = new FrictionJoint(bodyA, bodyB, anchor, useWorldCoordinates);
world.AddJoint(frictionJoint);
return frictionJoint;
}
public static FixedMouseJoint CreateFixedMouseJoint(World world, Body body, Vector2 worldAnchor)
{
FixedMouseJoint joint = new FixedMouseJoint(body, worldAnchor);
world.AddJoint(joint);
return joint;
}