unity-physicscore2d-joints-api

---

name: unity-physicscore2d-joints-api description: Authoritative Unity 6000.5 PhysicsCore2D API reference for Joints. Lists every type, property, field, method (with signatures, params, returns) for: PhysicsDistanceJoint, PhysicsDistanceJointDefinition, PhysicsFixedJoint, PhysicsFixedJointDefinition, PhysicsHingeJoint, PhysicsHingeJointDefinition, PhysicsIgnoreJoint, PhysicsIgnoreJointDefinition, PhysicsJoint, PhysicsRelativeJoint, PhysicsRelativeJointDefinition, PhysicsSliderJoint, PhysicsSliderJointDefinition, PhysicsWheelJoint, PhysicsWheelJointDefinition. Use whenever working with these types in code.

Unity PhysicsCore2D API — Joints

This skill is the auto-generated API surface for the listed types. It pre-dates Claude's training data on Unity 6000.5, so it should be treated as the source of truth for member names, signatures, and documentation strings.

Generated from Unity 6000.5.0b9 UnityEngine.PhysicsCore2DModule.xml.

Top-level types in this file: PhysicsDistanceJoint, PhysicsDistanceJointDefinition, PhysicsFixedJoint, PhysicsFixedJointDefinition, PhysicsHingeJoint, PhysicsHingeJointDefinition, PhysicsIgnoreJoint, PhysicsIgnoreJointDefinition, PhysicsJoint, PhysicsRelativeJoint, PhysicsRelativeJointDefinition, PhysicsSliderJoint, PhysicsSliderJointDefinition, PhysicsWheelJoint, PhysicsWheelJointDefinition.

PhysicsDistanceJoint

Connects an anchor point on body A with an anchor point on body B via a line segment of a specified distance.

Full name: Unity.U2D.Physics.PhysicsDistanceJoint
Docs: Unity.U2D.Physics.PhysicsDistanceJoint

Fields

Name	Summary
m_Id	The base joint Id.

Properties

Name	Summary
bodyA	The second body the joint constrains.
bodyB	A local anchor point on the first body for the constraint.
callbackTarget	Get/Set the that event callbacks for this joint will be sent to. Care should be taken with any assigned as a callback target that isn't a as this assignment will not in itself keep the object alive and can be garbage collected. To avoid this, you should have at least a single reference to the object in your code. To remove the object assigned here, set the callback target to NULL. This includes the following events: - A with call .
collideConnected	Whether the shapes on the pair of bodies can come into contact.
currentAngularSeparationError	Get the current angular separation error for this joint, in degrees. This does not consider admissible movement.
currentConstraintForce	Get the current constraint force used by the joint, usually in newtons.
currentConstraintTorque	Get the current constraint torque used by the joint, usually in newtons.
currentDistance	Get the current distance.
currentLinearSeparationError	Get the current linear separation error for this joint, usually in meters. This does not consider admissible movement.
currentMotorForce	The current motor force, usually in newtons.
distance	The desired distance constraint i.e. the rest length of this joint. This has a lower stable limit of just above zero.
drawScale	Controls the scaling of the joint drawing.
enableLimit	Enable/Disable the joint distance limit.
enableMotor	Enable/Disable the joint motor.
enableSpring	Enable/Disable the spring behaviour. If false then the joint will be rigid, overriding the limit and motor.
forceThreshold	The force threshold beyond which a joint event will be produced.
isOwned	Get if the joint is owned. See .
isValid	Checks if the joint is valid.
jointType	Gets the joint type. See .
localAnchorA	The local anchor frame constraint relative to bodyA's origin.
localAnchorB	The local anchor frame constraint relative to bodyB's origin.
maxDistanceLimit	Maximum distance limit of this joint. Must be greater than or equal to the minimum length.
maxMotorForce	The maximum force the motor can apply, usually in newtons.
minDistanceLimit	Minimum distance limit of this joint. This will be clamped to a lower stable limit.
motorSpeed	The desired motor speed, usually in meters per second.
ownerUserData	Get that can be used for any purpose, typically by the owner only.
springDamping	The spring linear damping, non-dimensional.
springFrequency	The spring linear stiffness frequency, in cycles per second.
springLowerForce	The lower spring force controls how much tension the spring can sustain.
springUpperForce	The upper spring force controls how much compression the spring can sustain.
torqueThreshold	The torque threshold beyond which a joint event will be produced.
tuningDamping	Controls the joint stiffness damping, non-dimensional. Use 1 for critical damping.
tuningFrequency	Controls the joint stiffness frequency, in cycles per second.
userData	Get/Set that can be used for any purpose. The physics system doesn't use this data, it is entirely for custom use.
world	Get the world the body is attached to.
worldDrawing	Controls whether this joint is automatically drawn when the world is drawn.

Methods

new(PhysicsJoint)

Create a from the specified base joint. The provided joint must be a joint type of .

Params:

• physicsJoint — The base joint to cast.

Create(PhysicsWorld, PhysicsDistanceJointDefinition)

Create a in the specified world.

Params:

• world — The world to create the joint in.
• definition — The joint definition to use.

Returns: The created joint.

Destroy(int)

Destroy the joint. If the object is owned with then you must provide the owner key it returned. Failing to do so will return a warning and the joint will not be destroyed.

Params:

• ownerKey — Optional owner key returned when using .

Returns: If the joint was destroyed or not.

DestroyBatch(ReadOnlySpan{Unity.U2D.Physics.PhysicsJoint})

Destroy a batch of joints. Owned joints will produce a warning and will not be destroyed (see ). Any invalid joints will be ignored.

Params:

• joints — The joints to destroy.

Draw()

Draw a PhysicsJoint that visually represents its current state in the world.

Equals(object)

Equals(PhysicsDistanceJoint)

GetHashCode()

GetOwner()

Get the owner object associated with this joint as specified using .

Returns: The owner object associated with this joint or NULL if no owner has been specified.

operator ==(PhysicsDistanceJoint, PhysicsDistanceJoint)

operator implicit()

Cast to the base .

Params:

• joint — The current joint.

operator implicit()

Cast to a from the base . The provided joint must be a joint type of .

Params:

• joint — The base joint to cast.

operator !=(PhysicsDistanceJoint, PhysicsDistanceJoint)

SetOwner(Object)

Set the (optional) owner object associated with this joint and return an owner key that must be specified when destroying the joint with . The physics system provides access to all objects, including the ability to destroy them so this feature can be used to stop accidental destruction of objects that are owned by other objects. You can only set the owner once, multiple attempts will produce a warning. The lifetime of the specified owner object is not linked to this joint i.e. this joint will still be owned by the owner object, even if it is destroyed. It is also valid to not specify an owner object (NULL) to simply gain an owner key however it can be useful, if simply for debugging purposes and discovery, to know which object is the owner.

Params:

• owner — The object that owns this joint. This can be NULL if not required.

Returns: An owner key that must be passed to when destroying the joint.

SetOwner(Object, int)

Set the owner object using the specified owner key. You can only set the owner once, multiple attempts will produce a warning. This call does not bind the lifetime of the specified owner object, it is simply a reference. It is also valid to not specify an owner object (NULL) to simply gain an owner key however it can be useful, if simply for debugging purposes and discovery, to know which object is the owner.

Params:

• owner — The object that owns this key. This can be NULL if not required but is recommended as the key is formed in part by the hash-code of the owner object.
• ownerKey — The owner key to be used. If zero then a new owner key is created. You can use for this value although any non-zero integer will work.

SetOwnerUserData(PhysicsUserData, int)

Set that can be used for any purpose, typically by the owner only.

Params:

• physicsUserData — The user data to set.
• ownerKey — Optional owner key returned when using .

ToString()

WakeBodies()

Wake the pair of bodies the joint is constraining.

PhysicsDistanceJointDefinition

A joint definition used to specify properties when creating a .

Full name: Unity.U2D.Physics.PhysicsDistanceJointDefinition
Docs: Unity.U2D.Physics.PhysicsDistanceJointDefinition

Properties

Name	Summary
bodyA	The first body the joint constrains.
bodyB	The second body the joint constrains.
collideConnected	Whether the shapes on the pair of bodies can come into contact.
defaultDefinition	Get a default definition.
distance	The desired distance constraint i.e. the rest length of this joint. This has a lower stable limit of just above zero.
drawScale	Controls the scaling of the joint drawing. Not all joints have scalable elements but those that do will use this scaling.
enableLimit	Enable/disable the joint limit.
enableMotor	Enable/Disable the joint motor.
enableSpring	Enable/Disable the distance constraint to behave like a spring. If false then the distance joint will be rigid, overriding the limit and motor.
forceThreshold	The force threshold beyond which a joint event will be produced.
localAnchorA	The local anchor frame constraint relative to bodyA's origin.
localAnchorB	The local anchor frame constraint relative to bodyB's origin.
maxDistanceLimit	Maximum length limit of this joint. Must be greater than or equal to the minimum length.
maxMotorForce	The maximum force the motor can apply, usually in newtons.
minDistanceLimit	Minimum length limit of this joint. This will be clamped to a lower stable limit.
motorSpeed	The desired motor speed, usually in meters per second.
springDamping	The spring linear damping, non-dimensional. Use 1 for critical damping.
springFrequency	The spring linear stiffness frequency, in cycles per second.
springLowerForce	The lower spring force controls how much tension the spring can sustain.
springUpperForce	The upper spring force controls how much compression the spring can sustain.
torqueThreshold	The torque threshold beyond which a joint event will be produced.
tuningDamping	Controls the joint stiffness damping, non-dimensional. Use 1 for critical damping.
tuningFrequency	Controls the joint stiffness frequency, in cycles per second.
worldDrawing	Controls whether this joint is automatically drawn when the world is drawn. See .

Methods

new()

Create a default definition.

new(bool)

Create a default definition.

Params:

• useSettings — Controls whether the default settings come from the physics settings or not.

PhysicsFixedJoint

A joint to constrain a pair of bodies together rigidly. This constraint provides springs to mimic soft-body simulation. The approximate solver cannot always hold many bodies together completely rigidly.

Full name: Unity.U2D.Physics.PhysicsFixedJoint
Docs: Unity.U2D.Physics.PhysicsFixedJoint

Fields

Name	Summary
m_Id	The base joint Id.

Properties

Name	Summary
angularDamping	Angular damping, non-dimensional. Use 1 for critical damping.
angularFrequency	Angular stiffness in cycles per second. Use zero for maximum stiffness.
bodyA	The second body the joint constrains.
bodyB	A local anchor point on the first body for the constraint.
callbackTarget	Get/Set the that event callbacks for this joint will be sent to. Care should be taken with any assigned as a callback target that isn't a as this assignment will not in itself keep the object alive and can be garbage collected. To avoid this, you should have at least a single reference to the object in your code. To remove the object assigned here, set the callback target to NULL. This includes the following events: - A with call .
collideConnected	Whether the shapes on the pair of bodies can come into contact.
currentAngularSeparationError	Get the current angular separation error for this joint, in degrees. This does not consider admissible movement.
currentConstraintForce	Get the current constraint force used by the joint, usually in newtons.
currentConstraintTorque	Get the current constraint torque used by the joint, usually in newtons.
currentLinearSeparationError	Get the current linear separation error for this joint, usually in meters. This does not consider admissible movement.
drawScale	Controls the scaling of the joint drawing.
forceThreshold	The force threshold beyond which a joint event will be produced.
isOwned	Get if the joint is owned. See .
isValid	Checks if the joint is valid.
jointType	Gets the joint type. See .
linearDamping	Linear damping, non-dimensional. Use 1 for critical damping.
linearFrequency	Linear stiffness in cycles per second. Use zero for maximum stiffness.
localAnchorA	The local anchor frame constraint relative to bodyA's origin.
localAnchorB	The local anchor frame constraint relative to bodyB's origin.
ownerUserData	Get that can be used for any purpose, typically by the owner only.
torqueThreshold	The torque threshold beyond which a joint event will be produced.
tuningDamping	Controls the joint stiffness damping, non-dimensional. Use 1 for critical damping.
tuningFrequency	Controls the joint stiffness frequency, in cycles per second.
userData	Get/Set that can be used for any purpose. The physics system doesn't use this data, it is entirely for custom use.
world	Get the world the body is attached to.
worldDrawing	Controls whether this joint is automatically drawn when the world is drawn.

Methods

new(PhysicsJoint)

Create a from the specified base joint. The provided joint must be a joint type of .

Params:

• physicsJoint — The base joint to cast.

Create(PhysicsWorld, PhysicsFixedJointDefinition)

Create a in the specified world.

Params:

• world — The world to create the joint in.
• definition — The joint definition to use.

Returns: The created joint.

Destroy(int)

Destroy the joint. If the object is owned with then you must provide the owner key it returned. Failing to do so will return a warning and the joint will not be destroyed.

Params:

• ownerKey — Optional owner key returned when using .

Returns: If the joint was destroyed or not.

DestroyBatch(ReadOnlySpan{Unity.U2D.Physics.PhysicsJoint})

Destroy a batch of joints. Owned joints will produce a warning and will not be destroyed (see ). Any invalid joints will be ignored.

Params:

• joints — The joints to destroy.

Draw()

Draw a PhysicsJoint that visually represents its current state in the world.

Equals(object)

Equals(PhysicsFixedJoint)

GetHashCode()

GetOwner()

Get the owner object associated with this joint as specified using .

Returns: The owner object associated with this joint or NULL if no owner has been specified.

operator ==(PhysicsFixedJoint, PhysicsFixedJoint)

operator implicit()

Cast to the base .

Params:

• joint — The current joint.

operator implicit()

Cast to a from the base . The provided joint must be a joint type of .

Params:

• joint — The base joint to cast.

operator !=(PhysicsFixedJoint, PhysicsFixedJoint)

SetOwner(Object)

Set the (optional) owner object associated with this joint and return an owner key that must be specified when destroying the joint with . The physics system provides access to all objects, including the ability to destroy them so this feature can be used to stop accidental destruction of objects that are owned by other objects. You can only set the owner once, multiple attempts will produce a warning. The lifetime of the specified owner object is not linked to this joint i.e. this joint will still be owned by the owner object, even if it is destroyed. It is also valid to not specify an owner object (NULL) to simply gain an owner key however it can be useful, if simply for debugging purposes and discovery, to know which object is the owner.

Params:

• owner — The object that owns this joint. This can be NULL if not required.

Returns: An owner key that must be passed to when destroying the joint.

SetOwner(Object, int)

Set the owner object using the specified owner key. You can only set the owner once, multiple attempts will produce a warning. This call does not bind the lifetime of the specified owner object, it is simply a reference. It is also valid to not specify an owner object (NULL) to simply gain an owner key however it can be useful, if simply for debugging purposes and discovery, to know which object is the owner.

Params:

• owner — The object that owns this key. This can be NULL if not required but is recommended as the key is formed in part by the hash-code of the owner object.
• ownerKey — The owner key to be used. If zero then a new owner key is created. You can use for this value although any non-zero integer will work.

SetOwnerUserData(PhysicsUserData, int)

Set that can be used for any purpose, typically by the owner only.

Params:

• physicsUserData — The user data to set.
• ownerKey — Optional owner key returned when using .

ToString()

WakeBodies()

Wake the pair of bodies the joint is constraining.

PhysicsFixedJointDefinition

A joint definition used to specify properties when creating a .

Full name: Unity.U2D.Physics.PhysicsFixedJointDefinition
Docs: Unity.U2D.Physics.PhysicsFixedJointDefinition

Properties

Name	Summary
angularDamping	Angular damping, non-dimensional. Use 1 for critical damping.
angularFrequency	Angular stiffness frequency, in cycles per second. Use zero for maximum stiffness.
bodyA	The first body the joint constrains.
bodyB	The second body the joint constrains.
collideConnected	Whether the shapes on the pair of bodies can come into contact.
defaultDefinition	Get a default definition.
drawScale	Controls the scaling of the joint drawing. Not all joints have scalable elements but those that do will use this scaling.
forceThreshold	The force threshold beyond which a joint event will be produced.
linearDamping	Linear damping, non-dimensional. Use 1 for critical damping.
linearFrequency	Linear stiffness frequency, in cycles per second. Use zero for maximum stiffness.
localAnchorA	The local anchor frame constraint relative to bodyA's origin.
localAnchorB	The local anchor frame constraint relative to bodyB's origin.
torqueThreshold	The torque threshold beyond which a joint event will be produced.
tuningDamping	Controls the joint stiffness damping, non-dimensional. Use 1 for critical damping.
tuningFrequency	Controls the joint stiffness frequency, in cycles per second.
worldDrawing	Controls whether this joint is automatically drawn when the world is drawn. See .

Methods

new()

Create a default definition.

new(bool)

Create a default definition.

Params:

• useSettings — Controls whether the default settings come from the physics settings or not.

PhysicsHingeJoint

A joint where an anchor point on body B is fixed to an anchor point on body A. This joint allows relative rotation.

Full name: Unity.U2D.Physics.PhysicsHingeJoint
Docs: Unity.U2D.Physics.PhysicsHingeJoint

Fields

Name	Summary
m_Id	The base joint Id.

Properties

Name	Summary
angle	Get the current angle of the joint, in degrees.
bodyA	The second body the joint constrains.
bodyB	A local anchor point on the first body for the constraint.
callbackTarget	Get/Set the that event callbacks for this joint will be sent to. Care should be taken with any assigned as a callback target that isn't a as this assignment will not in itself keep the object alive and can be garbage collected. To avoid this, you should have at least a single reference to the object in your code. To remove the object assigned here, set the callback target to NULL. This includes the following events: - A with call .
collideConnected	Whether the shapes on the pair of bodies can come into contact.
currentAngularSeparationError	Get the current angular separation error for this joint, in degrees. This does not consider admissible movement.
currentConstraintForce	Get the current constraint force used by the joint, usually in newtons.
currentConstraintTorque	Get the current constraint torque used by the joint, usually in newtons.
currentLinearSeparationError	Get the current linear separation error for this joint, usually in meters. This does not consider admissible movement.
currentMotorTorque	Get the current motor torque.
drawScale	Controls the scaling of the joint drawing.
enableLimit	Enable/Disable the joint rotation limit.
enableMotor	Enable/Disable the joint motor.
enableSpring	Enable/Disable the rotational spring.
enableUnpinned	Enable/Disable unpinned mode where only Body A is affected and body B and its local anchor point is ignored. Body B must still be assigned so it is typical to assign a static ground body, preferably shared/reused.
forceThreshold	The force threshold beyond which a joint event will be produced.
isOwned	Get if the joint is owned. See .
isValid	Checks if the joint is valid.
jointType	Gets the joint type. See .
localAnchorA	The local anchor frame constraint relative to bodyA's origin.
localAnchorB	The local anchor frame constraint relative to bodyB's origin.
lowerAngleLimit	Get the lower angle limit, in degrees.
maxMotorTorque	The maximum torque the motor can apply, usually in newton-meters.
motorSpeed	The desired motor speed, usually in degrees per second.
ownerUserData	Get that can be used for any purpose, typically by the owner only.
springDamping	The spring damping, non-dimensional.
springFrequency	The spring stiffness, in cycles per second.
springTargetAngle	The spring target angle, in degrees.
torqueThreshold	The torque threshold beyond which a joint event will be produced.
tuningDamping	Controls the joint stiffness damping, non-dimensional. Use 1 for critical damping.
tuningFrequency	Controls the joint stiffness frequency, in cycles per second.
upperAngleLimit	Get the upper angle limit, in degrees.
userData	Get/Set that can be used for any purpose. The physics system doesn't use this data, it is entirely for custom use.
world	Get the world the body is attached to.
worldDrawing	Controls whether this joint is automatically drawn when the world is drawn.

Methods

new(PhysicsJoint)

Create a from the specified base joint. The provided joint must be a joint type of .

Params:

• physicsJoint — The base joint to cast.

Create(PhysicsWorld, PhysicsHingeJointDefinition)

Create a PhysicsHingeJoint in the specified world.

Params:

• world — The world to create the joint in.
• definition — The joint definition to use.

Returns: The created joint.

Destroy(int)

Destroy the joint. If the object is owned with then you must provide the owner key it returned. Failing to do so will return a warning and the joint will not be destroyed.

Params:

• ownerKey — Optional owner key returned when using .

Returns: If the joint was destroyed or not.

DestroyBatch(ReadOnlySpan{Unity.U2D.Physics.PhysicsJoint})

Destroy a batch of joints. Owned joints will produce a warning and will not be destroyed (see ). Any invalid joints will be ignored.

Params:

• joints — The joints to destroy.

Draw()

Draw a PhysicsJoint that visually represents its current state in the world.

Equals(object)

Equals(PhysicsHingeJoint)

GetHashCode()

GetOwner()

Get the owner object associated with this joint as specified using .

Returns: The owner object associated with this joint or NULL if no owner has been specified.

operator ==(PhysicsHingeJoint, PhysicsHingeJoint)

operator implicit()

Cast to the base .

Params:

• joint — The current joint.

operator implicit()

Cast to a from the base . The provided joint must be a joint type of .

Params:

• joint — The base joint to cast.

operator !=(PhysicsHingeJoint, PhysicsHingeJoint)

SetOwner(Object)

Set the (optional) owner object associated with this joint and return an owner key that must be specified when destroying the joint with . The physics system provides access to all objects, including the ability to destroy them so this feature can be used to stop accidental destruction of objects that are owned by other objects. You can only set the owner once, multiple attempts will produce a warning. The lifetime of the specified owner object is not linked to this joint i.e. this joint will still be owned by the owner object, even if it is destroyed. It is also valid to not specify an owner object (NULL) to simply gain an owner key however it can be useful, if simply for debugging purposes and discovery, to know which object is the owner.

Params:

• owner — The object that owns this joint. This can be NULL if not required.

Returns: An owner key that must be passed to when destroying the joint.

SetOwner(Object, int)

Set the owner object using the specified owner key. You can only set the owner once, multiple attempts will produce a warning. This call does not bind the lifetime of the specified owner object, it is simply a reference. It is also valid to not specify an owner object (NULL) to simply gain an owner key however it can be useful, if simply for debugging purposes and discovery, to know which object is the owner.

Params:

• owner — The object that owns this key. This can be NULL if not required but is recommended as the key is formed in part by the hash-code of the owner object.
• ownerKey — The owner key to be used. If zero then a new owner key is created. You can use for this value although any non-zero integer will work.

SetOwnerUserData(PhysicsUserData, int)

Set that can be used for any purpose, typically by the owner only.

Params:

• physicsUserData — The user data to set.
• ownerKey — Optional owner key returned when using .

ToString()

WakeBodies()

Wake the pair of bodies the joint is constraining.

PhysicsHingeJointDefinition

A joint definition used to specify properties when creating a .

Full name: Unity.U2D.Physics.PhysicsHingeJointDefinition
Docs: Unity.U2D.Physics.PhysicsHingeJointDefinition

Properties

Name	Summary
bodyA	The first body the joint constrains.
bodyB	The second body the joint constrains.
collideConnected	Whether the shapes on the pair of bodies can come into contact.
defaultDefinition	Create a default definition.
drawScale	Controls the scaling of the joint drawing. Not all joints have scalable elements but those that do will use this scaling.
enableLimit	Enable/disable the joint angle limit.
enableMotor	Enable/disable the joint motor.
enableSpring	Enable/Disable the rotational spring.
enableUnpinned	Enable/Disable unpinned mode where only Body A is affected and body B and its local anchor point is ignored. Body B must still be assigned so it is typical to assign a static ground body, preferably shared/reused.
forceThreshold	The force threshold beyond which a joint event will be produced.
localAnchorA	The local anchor frame constraint relative to bodyA's origin.
localAnchorB	The local anchor frame constraint relative to bodyB's origin.
lowerAngleLimit	The lower angle limit, in degrees.
maxMotorTorque	The maximum torque the motor can apply, usually in newton-meters.
motorSpeed	The desired motor speed, usually in degrees per second.
springDamping	The spring damping, non-dimensional. Use 1 for critical damping.
springFrequency	The spring stiffness frequency, in cycles per second.
springTargetAngle	The spring target angle, in degrees.
torqueThreshold	The torque threshold beyond which a joint event will be produced.
tuningDamping	Controls the joint stiffness damping, non-dimensional. Use 1 for critical damping.
tuningFrequency	Controls the joint stiffness frequency, in cycles per second.
upperAngleLimit	The upper angle limit, in degrees.
worldDrawing	Controls whether this joint is automatically drawn when the world is drawn. See .

Methods

new()

Create a default definition.

new(bool)

Create a default definition.

Params:

• useSettings — Controls whether the default settings come from the physics settings or not.

PhysicsIgnoreJoint

A joint used to ignore collision between two specific bodies. As a side effect of being a joint, it also keeps the two bodies in the same simulation island meaning they'll wake/sleep at the same time and be solved together on the same thread.

Full name: Unity.U2D.Physics.PhysicsIgnoreJoint
Docs: Unity.U2D.Physics.PhysicsIgnoreJoint

Fields

Name	Summary
m_Id	The base joint Id.

Properties

Name	Summary
bodyA	The second body the joint constrains.
bodyB	A local anchor point on the first body for the constraint.
callbackTarget	Get/Set the that event callbacks for this joint will be sent to. Care should be taken with any assigned as a callback target that isn't a as this assignment will not in itself keep the object alive and can be garbage collected. To avoid this, you should have at least a single reference to the object in your code. To remove the object assigned here, set the callback target to NULL. This includes the following events: - A with call .
collideConnected	This is unused in this specific joint and is always false. Typically this gets whether the shapes on the pair of bodies can come into contact.
currentAngularSeparationError	This is unused in this specific joint. Typically this would get the current angular separation error for this joint.
currentConstraintForce	This is unused in this specific joint. Typically this would get the current constraint force used by the joint, usually in newtons.
currentConstraintTorque	This is unused in this specific joint. Typically this would get the current constraint torque used by the joint, usually in newtons.
currentLinearSeparationError	This is unused in this specific joint. Typically this would get the current linear separation error for this joint.
drawScale	This is unused in this specific joint. Typically this would control the scaling of the joint drawing.
forceThreshold	This is unused in this specific joint. Typically this is the force threshold beyond which a joint event will be produced.
isOwned	Get if the joint is owned. See .
isValid	Checks if the joint is valid.
jointType	Gets the joint type. See .
localAnchorA	This is unused in this specific joint. Typically this is the local anchor frame constraint relative to bodyA's origin.
localAnchorB	This is unused in this specific joint. Typically this is the local anchor frame constraint relative to bodyB's origin.
ownerUserData	Get that can be used for any purpose, typically by the owner only.
torqueThreshold	This is unused in this specific joint. Typically this is the torque threshold beyond which a joint event will be produced.
tuningDamping	This is unused in this specific joint. Typically this would control the joint stiffness damping, non-dimensional. Use 1 for critical damping.
tuningFrequency	This is unused in this specific joint. Typically this would control the joint stiffness frequency, in cycles per second.
userData	Get/Set that can be used for any purpose. The physics system doesn't use this data, it is entirely for custom use.
world	Get the world the body is attached to.
worldDrawing	Controls whether this joint is automatically drawn when the world is drawn.

Methods

new(PhysicsJoint)

Create a from the specified base joint. The provided joint must be a joint type of .

Params:

• physicsJoint — The base joint to cast.

Create(PhysicsWorld, PhysicsIgnoreJointDefinition)

Create a PhysicsIgnoreJoint in the specified world.

Params:

• world — The world to create the joint in.
• definition — The joint definition to use.

Returns: The created joint.

Destroy(int)

Destroy the joint. If the object is owned with then you must provide the owner key it returned. Failing to do so will return a warning and the joint will not be destroyed.

Params:

• ownerKey — Optional owner key returned when using .

Returns: If the joint was destroyed or not.

DestroyBatch(ReadOnlySpan{Unity.U2D.Physics.PhysicsJoint})

Destroy a batch of joints. Owned joints will produce a warning and will not be destroyed (see ). Any invalid joints will be ignored.

Params:

• joints — The joints to destroy.

Draw()

Draw a PhysicsJoint that visually represents its current state in the world.

Equals(object)

Equals(PhysicsIgnoreJoint)

GetHashCode()

GetOwner()

Get the owner object associated with this joint as specified using .

Returns: The owner object associated with this joint or NULL if no owner has been specified.

operator ==(PhysicsIgnoreJoint, PhysicsIgnoreJoint)

operator implicit()

Cast to the base .

Params:

• joint — The current joint.

operator implicit()

Cast to a from the base . The provided joint must be a joint type of .

Params:

• joint — The base joint to cast.

operator !=(PhysicsIgnoreJoint, PhysicsIgnoreJoint)

SetOwner(Object)

Set the (optional) owner object associated with this joint and return an owner key that must be specified when destroying the joint with . The physics system provides access to all objects, including the ability to destroy them so this feature can be used to stop accidental destruction of objects that are owned by other objects. You can only set the owner once, multiple attempts will produce a warning. The lifetime of the specified owner object is not linked to this joint i.e. this joint will still be owned by the owner object, even if it is destroyed. It is also valid to not specify an owner object (NULL) to simply gain an owner key however it can be useful, if simply for debugging purposes and discovery, to know which object is the owner.

Params:

• owner — The object that owns this joint. This can be NULL if not required.

Returns: An owner key that must be passed to when destroying the joint.

SetOwner(Object, int)

Set the owner object using the specified owner key. You can only set the owner once, multiple attempts will produce a warning. This call does not bind the lifetime of the specified owner object, it is simply a reference. It is also valid to not specify an owner object (NULL) to simply gain an owner key however it can be useful, if simply for debugging purposes and discovery, to know which object is the owner.

Params:

• owner — The object that owns this key. This can be NULL if not required but is recommended as the key is formed in part by the hash-code of the owner object.
• ownerKey — The owner key to be used. If zero then a new owner key is created. You can use for this value although any non-zero integer will work.

SetOwnerUserData(PhysicsUserData, int)

Set that can be used for any purpose, typically by the owner only.

Params:

• physicsUserData — The user data to set.
• ownerKey — Optional owner key returned when using .

ToString()

WakeBodies()

Wake the pair of bodies the joint is constraining.

PhysicsIgnoreJointDefinition

A joint definition used to specify properties when creating a .

Full name: Unity.U2D.Physics.PhysicsIgnoreJointDefinition
Docs: Unity.U2D.Physics.PhysicsIgnoreJointDefinition

Properties

Name	Summary
bodyA	The first body the joint constrains.
bodyB	The second body the joint constrains.
defaultDefinition	Create a default definition.
worldDrawing	Controls whether this joint is automatically drawn when the world is drawn. See .

Methods

new()

Create a default definition.

PhysicsJoint

A joint is used to constrain bodies to the world or to each other in various ways. A joint is automatically destroyed when either body it is attached to is destroyed. A joint cannot exist unattached from a body.

Full name: Unity.U2D.Physics.PhysicsJoint
Docs: Unity.U2D.Physics.PhysicsJoint

Properties

Name	Summary
bodyA	The second body the joint constrains.
bodyB	A local anchor point on the first body for the constraint.
callbackTarget	Get/Set the object that event callbacks for this joint will be sent to. Care should be taken with any assigned as a callback target that isn't a as this assignment will not in itself keep the object alive and can be garbage collected. To avoid this, you should have at least a single reference to the object in your code. To remove the object assigned here, set the callback target to NULL. This includes the following events: - A with call .
collideConnected	Whether the shapes on the pair of bodies can come into contact.
currentAngularSeparationError	Get the current angular separation error for this joint, in degrees. This does not consider admissible movement.
currentConstraintForce	Get the current constraint force used by the joint, usually in newtons.
currentConstraintTorque	Get the current constraint torque used by the joint, usually in newtons.
currentLinearSeparationError	Get the current linear separation error for this joint, usually in meters. This does not consider admissible movement.
drawScale	Controls the scaling of the joint drawing. Not all joints have scalable elements but those that do will use this scaling.
forceThreshold	The force threshold beyond which a joint event will be produced.
isOwned	Get if the joint is owned. See .
isValid	Checks if the joint is valid.
jointType	Gets the joint type. See .
localAnchorA	The local anchor frame constraint relative to bodyA's origin.
localAnchorB	The local anchor frame constraint relative to bodyB's origin.
ownerUserData	Get that can be used for any purpose, typically by the owner only.
torqueThreshold	The torque threshold beyond which a joint event will be produced.
tuningDamping	Controls the joint stiffness damping, non-dimensional. Use 1 for critical damping.
tuningFrequency	Controls the joint stiffness frequency, in cycles per second.
userData	Get/Set that can be used for any purpose. The physics system doesn't use this data, it is entirely for custom use.
world	Get the world the body is attached to.
worldDrawing	Controls whether this joint is automatically drawn when the world is drawn.

Methods

CreateJoint(PhysicsWorld, PhysicsDistanceJointDefinition)

Create a PhysicsDistanceJoint in the world. See .

Params:

• world — The world to create the joint in.
• definition — The joint definition to use.

Returns: The created joint.

CreateJoint(PhysicsWorld, PhysicsRelativeJointDefinition)

Create a PhysicsRelativeJoint in the world. See .

Params:

• world — The world to create the joint in.
• definition — The joint definition to use.

Returns: The created joint.

CreateJoint(PhysicsWorld, PhysicsIgnoreJointDefinition)

Create an IgnoreJoint in the world. See .

Params:

• world — The world to create the joint in.
• definition — The joint definition to use.

Returns: The created joint.

CreateJoint(PhysicsWorld, PhysicsSliderJointDefinition)

Create a SliderJoint in the world. See .

Params:

• world — The world to create the joint in.
• definition — The joint definition to use.

Returns: The created joint.

CreateJoint(PhysicsWorld, PhysicsHingeJointDefinition)

Create a PhysicsHingeJoint in the world. See .

Params:

• world — The world to create the joint in.
• definition — The joint definition to use.

Returns: The created joint.

CreateJoint(PhysicsWorld, PhysicsFixedJointDefinition)

Create a FixedJoint in the world. See .

Params:

• world — The world to create the joint in.
• definition — The joint definition to use.

Returns: The created joint.

CreateJoint(PhysicsWorld, PhysicsWheelJointDefinition)

Create a WheelJoint in the world. See .

Params:

• world — The world to create the joint in.
• definition — The joint definition to use.

Returns: The created joint.

Destroy(int)

Destroy the joint. If the object is owned with then you must provide the owner key it returned. Failing to do so will return a warning and the joint will not be destroyed.

Params:

• ownerKey — Optional owner key returned when using .

Returns: If the joint was destroyed or not.

DestroyBatch(ReadOnlySpan{Unity.U2D.Physics.PhysicsJoint})

Destroy a batch of joints. Owned joints will produce a warning and will not be destroyed (see ). Any invalid joints will be ignored.

Params:

• joints — The joints to destroy.

Draw()

Draw a PhysicsJoint that visually represents its current state in the world.

Equals(object)

Equals(PhysicsJoint)

GetHashCode()

GetOwner()

Get the owner object associated with this joint as specified using .

Returns: The owner object associated with this joint or NULL if no owner has been specified.

operator ==(PhysicsJoint, PhysicsJoint)

operator !=(PhysicsJoint, PhysicsJoint)

SetOwner(ReadOnlySpan{Unity.U2D.Physics.PhysicsJoint}, Object, int)

Set the owner object using the specified owner key. You can only set the owner once, multiple attempts will produce a warning. This call does not bind the lifetime of the specified owner object, it is simply a reference. Whilst it is valid to not specify an owner object (NULL), it is recommended for debugging purposes.

Params:

• joints — The bodies to set ownership for.
• owner — The object that owns this key. Whilst it is valid to not specify an owner object (NULL), it is recommended for debugging purposes.
• ownerKey — The owner key to be used. The value must be non-zero. You can use for this value although any non-zero integer will work.

SetOwner(Object, int)

Set the owner object using the specified owner key. You can only set the owner once, multiple attempts will produce a warning. This call does not bind the lifetime of the specified owner object, it is simply a reference. It is also valid to not specify an owner object (NULL) to simply gain an owner key however it can be useful, if simply for debugging purposes and discovery, to know which object is the owner.

Params:

• owner — The object that owns this key. This can be NULL if not required but is recommended as the key is formed in part by the hash-code of the owner object.
• ownerKey — The owner key to be used. If zero then a new owner key is created. You can use for this value although any non-zero integer will work.

SetOwner(Object)

Set the owner object using the specified owner key. You can only set the owner once, multiple attempts will produce a warning. This call does not bind the lifetime of the specified owner object, it is simply a reference. It is also valid to not specify an owner object (NULL) to simply gain an owner key however it can be useful, if simply for debugging purposes and discovery, to know which object is the owner.

Params:

• owner — The object that owns this key. This can be NULL if not required but is recommended as the key is formed in part by the hash-code of the owner object.

Returns: The owner key assigned.

SetOwnerUserData(PhysicsUserData, int)

Set that can be used for any purpose, typically by the owner only.

Params:

• physicsUserData — The user data to set.
• ownerKey — Optional owner key returned when using .

ToString()

WakeBodies()

Wake the pair of bodies the joint is constraining.

Nested Types

• JointType — The type of joint.

JointType

The type of joint.

Full name: Unity.U2D.Physics.PhysicsJoint.JointType

Fields

Name	Summary
DistanceJoint	Constrain the distance between a pair of bodies.
FixedJoint	Constrain a fixed translation and rotation between a pair of bodies. This joint type is also know as a Weld joint.
HingeJoint	Constrain the rotation between a pair of bodies. This joint type is also know as a Revolute joint.
IgnoreJoint	Used to ignore collision between two specific bodies. As a side effect of being a joint, it also keeps the two bodies in the same simulation island.
RelativeJoint	Constrain the relative translation and rotation between a pair of bodies. This joint type is also know as a Motor joint.
SliderJoint	Constrain the relative translation along an axis between a pair of bodies. This joint type is also know as a Prismatic joint.
WheelJoint	Constrain a translation and rotation between a pair of bodies.

PhysicsRelativeJoint

A joint constraint used to control the relative movement two bodies while still being responsive to collisions. A spring controls the position and rotation and velocity control allows for simulated friction such as seen in top-down games. A typical usage is to control the movement of a dynamic body with respect to the ground.

Full name: Unity.U2D.Physics.PhysicsRelativeJoint
Docs: Unity.U2D.Physics.PhysicsRelativeJoint

Fields

Name	Summary
m_Id	The base joint Id.

Properties

Name	Summary
angularVelocity	The desired angular velocity.
bodyA	The second body the joint constrains.
bodyB	A local anchor point on the first body for the constraint.
callbackTarget	Get/Set the that event callbacks for this joint will be sent to. Care should be taken with any assigned as a callback target that isn't a as this assignment will not in itself keep the object alive and can be garbage collected. To avoid this, you should have at least a single reference to the object in your code. To remove the object assigned here, set the callback target to NULL. This includes the following events: - A with call .
collideConnected	Whether the shapes on the pair of bodies can come into contact.
currentAngularSeparationError	Get the current angular separation error for this joint, in degrees. This does not consider admissible movement.
currentConstraintForce	Get the current constraint force used by the joint, usually in newtons.
currentConstraintTorque	Get the current constraint torque used by the joint, usually in newtons.
currentLinearSeparationError	Get the current linear separation error for this joint, usually in meters. This does not consider admissible movement.
drawScale	Controls the scaling of the joint drawing.
forceThreshold	The force threshold beyond which a joint event will be produced.
isOwned	Get if the joint is owned. See .
isValid	Checks if the joint is valid.
jointType	Gets the joint type. See .
linearVelocity	The desired linear velocity.
localAnchorA	The local anchor frame constraint relative to bodyA's origin.
localAnchorB	The local anchor frame constraint relative to bodyB's origin.
maxForce	The maximum linear force, usually in newtons. A value of zero is a special case which turns the limit off.
maxTorque	The maximum torque, usually in newton-meters. A value of zero is a special case which turns the limit off.
ownerUserData	Get that can be used for any purpose, typically by the owner only.
springAngularDamping	The spring angular damping.
springAngularFrequency	The spring angular frequency, in cycles per second. A value of zero is a special case which turns the angular spring off.
springLinearDamping	The spring linear damping.
springLinearFrequency	The spring linear frequency, in cycles per second. A value of zero is a special case which turns the linear spring off.
springMaxForce	The spring maximum linear force, usually in newtons. A value of zero is a special case which turns the force limit off.
springMaxTorque	The spring maximum torque, usually in newton-meters. A value of zero is a special case which turns the torque limit off.
torqueThreshold	The torque threshold beyond which a joint event will be produced.
tuningDamping	Controls the joint stiffness damping, non-dimensional. Use 1 for critical damping.
tuningFrequency	Controls the joint stiffness frequency, in cycles per second.
userData	Get/Set that can be used for any purpose. The physics system doesn't use this data, it is entirely for custom use.
world	Get the world the body is attached to.
worldDrawing	Controls whether this joint is automatically drawn when the world is drawn.

Methods

new(PhysicsJoint)

Create a from the specified base joint. The provided joint must be a joint type of .

Params:

• physicsJoint — The base joint to cast.

Create(PhysicsWorld, PhysicsRelativeJointDefinition)

Create a PhysicsRelativeJoint in the specified world.

Params:

• world — The world to create the joint in.
• definition — The joint definition to use.

Returns: The created joint.

Destroy(int)

Destroy the joint. If the object is owned with then you must provide the owner key it returned. Failing to do so will return a warning and the joint will not be destroyed.

Params:

• ownerKey — The owner key returned when using .

Returns: If the joint was destroyed or not.

DestroyBatch(ReadOnlySpan{Unity.U2D.Physics.PhysicsJoint})

Destroy a batch of joints. Owned joints will produce a warning and will not be destroyed (see ). Any invalid joints will be ignored.

Params:

• joints — The joints to destroy.

Draw()

Draw a PhysicsJoint that visually represents its current state in the world.

Equals(object)

Equals(PhysicsRelativeJoint)

GetHashCode()

GetOwner()

Get the owner object associated with this joint as specified using .

Returns: The owner object associated with this joint or NULL if no owner has been specified.

operator ==(PhysicsRelativeJoint, PhysicsRelativeJoint)

operator implicit()

Cast to the base .

Params:

• joint — The current joint.

operator implicit()

Cast to a from the base . The provided joint must be a joint type of .

Params:

• joint — The base joint to cast.

operator !=(PhysicsRelativeJoint, PhysicsRelativeJoint)

SetOwner(Object)

Set the (optional) owner object associated with this joint and return an owner key that must be specified when destroying the joint with . The physics system provides access to all objects, including the ability to destroy them so this feature can be used to stop accidental destruction of objects that are owned by other objects. You can only set the owner once, multiple attempts will produce a warning. The lifetime of the specified owner object is not linked to this joint i.e. this joint will still be owned by the owner object, even if it is destroyed. It is also valid to not specify an owner object (NULL) to simply gain an owner key however it can be useful, if simply for debugging purposes and discovery, to know which object is the owner.

Params:

• owner — The object that owns this joint. This can be NULL if not required.

Returns: An owner key that must be passed to when destroying the joint.

SetOwner(Object, int)

Set the owner object using the specified owner key. You can only set the owner once, multiple attempts will produce a warning. This call does not bind the lifetime of the specified owner object, it is simply a reference. It is also valid to not specify an owner object (NULL) to simply gain an owner key however it can be useful, if simply for debugging purposes and discovery, to know which object is the owner.

Params:

• owner — The object that owns this key. This can be NULL if not required but is recommended as the key is formed in part by the hash-code of the owner object.
• ownerKey — The owner key to be used. If zero then a new owner key is created. You can use for this value although any non-zero integer will work.

SetOwnerUserData(PhysicsUserData, int)

Set that can be used for any purpose, typically by the owner only.

Params:

• physicsUserData — The user data to set.
• ownerKey — Optional owner key returned when using .

ToString()

WakeBodies()

Wake the pair of bodies the joint is constraining.

PhysicsRelativeJointDefinition

A joint definition used to specify properties when creating a .

Full name: Unity.U2D.Physics.PhysicsRelativeJointDefinition
Docs: Unity.U2D.Physics.PhysicsRelativeJointDefinition

Properties

Name	Summary
angularVelocity	The desired angular velocity.
bodyA	The first body the joint constrains.
bodyB	The second body the joint constrains.
collideConnected	Whether the shapes on the pair of bodies can come into contact.
defaultDefinition	Create a default definition.
drawScale	Controls the scaling of the joint drawing. Not all joints have scalable elements but those that do will use this scaling.
forceThreshold	The force threshold beyond which a joint event will be produced.
linearVelocity	The desired linear velocity.
localAnchorA	The local anchor frame constraint relative to bodyA's origin.
localAnchorB	The local anchor frame constraint relative to bodyB's origin.
maxForce	The maximum linear force, usually in newtons. A value of zero is a special case which turns the limit off.
maxTorque	The maximum torque, usually in newton-meters. A value of zero is a special case which turns the limit off.
springAngularDamping	The spring angular damping. Use 1 for critical damping.
springAngularFrequency	The spring angular frequency, in cycles per second. A value of zero is a special case which turns the angular spring off.
springLinearDamping	The spring linear damping. Use 1 for critical damping.
springLinearFrequency	The spring linear frequency, in cycles per second. A value of zero is a special case which turns the linear spring off.
springMaxForce	The spring maximum linear force, usually in newtons. A value of zero is a special case which turns the force limit off.
springMaxTorque	The spring maximum torque, usually in newton-meters. A value of zero is a special case which turns the torque limit off.
torqueThreshold	The torque threshold beyond which a joint event will be produced.
tuningDamping	Controls the joint stiffness damping, non-dimensional. Use 1 for critical damping.
tuningFrequency	Controls the joint stiffness frequency, in cycles per second.
worldDrawing	Controls whether this joint is automatically drawn when the world is drawn. See .

Methods

new()

Create a default definition.

new(bool)

Create a default definition.

Params:

• useSettings — Controls whether the default settings come from the physics settings or not.

PhysicsSliderJoint

A joint that requires defining a line of motion defined by the local anchor A. Body B may slide along the axis defined by the local anchor A. Body B cannot rotate relative to body A. The joint translation is zero when the local anchor origins coincide in world space. The joint uses local anchors so that the initial configuration can violate the constraint slightly.

Full name: Unity.U2D.Physics.PhysicsSliderJoint
Docs: Unity.U2D.Physics.PhysicsSliderJoint

Fields

Name	Summary
m_Id	The base joint Id.

Properties

Name	Summary
bodyA	The second body the joint constrains.
bodyB	A local anchor point on the first body for the constraint.
callbackTarget	Get/Set the that event callbacks for this joint will be sent to. Care should be taken with any assigned as a callback target that isn't a as this assignment will not in itself keep the object alive and can be garbage collected. To avoid this, you should have at least a single reference to the object in your code. To remove the object assigned here, set the callback target to NULL. This includes the following events: - A with call .
collideConnected	Whether the shapes on the pair of bodies can come into contact.
currentAngularSeparationError	Get the current angular separation error for this joint, in degrees. This does not consider admissible movement.
currentConstraintForce	Get the current constraint force used by the joint, usually in newtons.
currentConstraintTorque	Get the current constraint torque used by the joint, usually in newtons.
currentLinearSeparationError	Get the current linear separation error for this joint, usually in meters. This does not consider admissible movement.
currentMotorForce	Get the current motor force, usually in newtons.
currentSpeed	Get the current joint translation speed, usually in meters per second.
currentTranslation	Get the current joint translation, usually in meters.
drawScale	Controls the scaling of the joint drawing.
enableLimit	Enable/Disable the joint translation limit.
enableMotor	Enable/Disable the joint motor.
enableSpring	Enable/Disable a spring along the slider joint axis.
forceThreshold	The force threshold beyond which a joint event will be produced.
isOwned	Get if the joint is owned. See .
isValid	Checks if the joint is valid.
jointType	Gets the joint type. See .
localAnchorA	The local anchor frame constraint relative to bodyA's origin.
localAnchorB	The local anchor frame constraint relative to bodyB's origin.
lowerTranslationLimit	Get the lower translation limit.
maxMotorForce	The maximum force the motor can apply, usually in newtons.
motorSpeed	The desired motor speed, usually in meters per second.
ownerUserData	Get that can be used for any purpose, typically by the owner only.
springDamping	The spring damping, non-dimensional.
springFrequency	The spring stiffness, in cycles per second.
springTargetTranslation	The spring target translation, usually in meters. The spring-damper will drive to this translation.
torqueThreshold	The torque threshold beyond which a joint event will be produced.
tuningDamping	Controls the joint stiffness damping, non-dimensional. Use 1 for critical damping.
tuningFrequency	Controls the joint stiffness frequency, in cycles per second.
upperTranslationLimit	Get the upper translation limit.
userData	Get/Set that can be used for any purpose. The physics system doesn't use this data, it is entirely for custom use.
world	Get the world the body is attached to.
worldDrawing	Controls whether this joint is automatically drawn when the world is drawn.

Methods

new(PhysicsJoint)

Create a from the specified base joint. The provided joint must be a joint type of .

Params:

• physicsJoint — The base joint to cast.

Create(PhysicsWorld, PhysicsSliderJointDefinition)

Create a PhysicsSliderJoint in the specified world.

Params:

• world — The world to create the joint in.
• definition — The joint definition to use.

Returns: The created joint.

Destroy(int)

Destroy the joint. If the object is owned with then you must provide the owner key it returned. Failing to do so will return a warning and the joint will not be destroyed.

Params:

• ownerKey — Optional owner key returned when using .

Returns: If the joint was destroyed or not.

DestroyBatch(ReadOnlySpan{Unity.U2D.Physics.PhysicsJoint})

Destroy a batch of joints. Owned joints will produce a warning and will not be destroyed (see ). Any invalid joints will be ignored.

Params:

• joints — The joints to destroy.

Draw()

Draw a PhysicsJoint that visually represents its current state in the world.

Equals(object)

Equals(PhysicsSliderJoint)

GetHashCode()

GetOwner()

Get the owner object associated with this joint as specified using .

Returns: The owner object associated with this joint or NULL if no owner has been specified.

operator ==(PhysicsSliderJoint, PhysicsSliderJoint)

operator implicit()

Cast to the base .

Params:

• joint — The current joint.

operator implicit()

Cast to a from the base . The provided joint must be a joint type of .

Params:

• joint — The base joint to cast.

operator !=(PhysicsSliderJoint, PhysicsSliderJoint)

SetOwner(Object)

Set the (optional) owner object associated with this joint and return an owner key that must be specified when destroying the joint with . The physics system provides access to all objects, including the ability to destroy them so this feature can be used to stop accidental destruction of objects that are owned by other objects. You can only set the owner once, multiple attempts will produce a warning. The lifetime of the specified owner object is not linked to this joint i.e. this joint will still be owned by the owner object, even if it is destroyed. It is also valid to not specify an owner object (NULL) to simply gain an owner key however it can be useful, if simply for debugging purposes and discovery, to know which object is the owner.

Params:

• owner — The object that owns this joint. This can be NULL if not required.

Returns: An owner key that must be passed to when destroying the joint.

SetOwner(Object, int)

Set the owner object using the specified owner key. You can only set the owner once, multiple attempts will produce a warning. This call does not bind the lifetime of the specified owner object, it is simply a reference. It is also valid to not specify an owner object (NULL) to simply gain an owner key however it can be useful, if simply for debugging purposes and discovery, to know which object is the owner.

Params:

• owner — The object that owns this key. This can be NULL if not required but is recommended as the key is formed in part by the hash-code of the owner object.
• ownerKey — The owner key to be used. If zero then a new owner key is created. You can use for this value although any non-zero integer will work.

SetOwnerUserData(PhysicsUserData, int)

Set that can be used for any purpose, typically by the owner only.

Params:

• physicsUserData — The user data to set.
• ownerKey — Optional owner key returned when using .

ToString()

WakeBodies()

Wake the pair of bodies the joint is constraining.

PhysicsSliderJointDefinition

A joint definition used to specify properties when creating a .

Full name: Unity.U2D.Physics.PhysicsSliderJointDefinition
Docs: Unity.U2D.Physics.PhysicsSliderJointDefinition

Properties

Name	Summary
bodyA	The first body the joint constrains.
bodyB	The second body the joint constrains.
collideConnected	Whether the shapes on the pair of bodies can come into contact.
defaultDefinition	Get a default definition.
drawScale	Controls the scaling of the joint drawing. Not all joints have scalable elements but those that do will use this scaling.
enableLimit	Enable/disable the joint translation limit.
enableMotor	Enable/disable the joint motor.
enableSpring	Enable/Disable a spring along the slider joint axis.
forceThreshold	The force threshold beyond which a joint event will be produced.
localAnchorA	The local anchor frame constraint relative to bodyA's origin.
localAnchorB	The local anchor frame constraint relative to bodyB's origin.
lowerTranslationLimit	The lower translation limit of this joint. This will be clamped to a lower stable limit.
maxMotorForce	The maximum force the motor can apply, usually in newtons.
motorSpeed	The desired motor speed, usually in meters per second.
springDamping	The spring damping, non-dimensional. Use 1 for critical damping.
springFrequency	The spring stiffness frequency, in cycles per second.
springTargetTranslation	The spring target translation, usually in meters. The spring-damper will drive to this translation.
torqueThreshold	The torque threshold beyond which a joint event will be produced.
tuningDamping	Controls the joint stiffness damping, non-dimensional. Use 1 for critical damping.
tuningFrequency	Controls the joint stiffness frequency, in cycles per second.
upperTranslationLimit	The upper translation limit of this joint. Must be greater than or equal to the minimum length.
worldDrawing	Controls whether this joint is automatically drawn when the world is drawn. See .

Methods

new()

Create a default definition.

new(bool)

Create a default definition.

Params:

• useSettings — Controls whether the default settings come from the physics settings or not.

PhysicsWheelJoint

A joint that requires defining a line of motion using an axis and an anchor point. The joint translation is zero when the local anchors coincide in world space. The joint uses local anchors so that the initial configuration can violate the constraint slightly.

Full name: Unity.U2D.Physics.PhysicsWheelJoint
Docs: Unity.U2D.Physics.PhysicsWheelJoint

Fields

Name	Summary
m_Id	The base joint Id.

Properties

Name	Summary
bodyA	The second body the joint constrains.
bodyB	A local anchor point on the first body for the constraint.
callbackTarget	Get/Set the that event callbacks for this joint will be sent to. Care should be taken with any assigned as a callback target that isn't a as this assignment will not in itself keep the object alive and can be garbage collected. To avoid this, you should have at least a single reference to the object in your code. To remove the object assigned here, set the callback target to NULL. This includes the following events: - A with call .
collideConnected	Whether the shapes on the pair of bodies can come into contact.
currentAngularSeparationError	Get the current angular separation error for this joint, in degrees. This does not consider admissible movement.
currentConstraintForce	Get the current constraint force used by the joint, usually in newtons.
currentConstraintTorque	Get the current constraint torque used by the joint, usually in newtons.
currentLinearSeparationError	Get the current linear separation error for this joint, usually in meters. This does not consider admissible movement.
currentMotorTorque	Get the current motor torque, usually in newtons.
drawScale	Controls the scaling of the joint drawing.
enableLimit	Enable/disable the joint limit.
enableMotor	Enable/Disable the joint motor.
enableSpring	Enable/Disable a spring along the joint axis.
forceThreshold	The force threshold beyond which a joint event will be produced.
isOwned	Get if the joint is owned. See .
isValid	Checks if the joint is valid.
jointType	Gets the joint type. See .
localAnchorA	The local anchor frame constraint relative to bodyA's origin.
localAnchorB	The local anchor frame constraint relative to bodyB's origin.
lowerTranslationLimit	Get/Set the lower translation limit.
maxMotorTorque	The maximum torque the motor can apply, usually in newtons.
motorSpeed	The desired motor speed, usually in degrees per second.
ownerUserData	Get that can be used for any purpose, typically by the owner only.
springDamping	The spring damping, non-dimensional.
springFrequency	The spring stiffness, in cycles per second.
torqueThreshold	The torque threshold beyond which a joint event will be produced.
tuningDamping	Controls the joint stiffness damping, non-dimensional. Use 1 for critical damping.
tuningFrequency	Controls the joint stiffness frequency, in cycles per second.
upperTranslationLimit	Get/Set the upper translation limit.
userData	Get/Set that can be used for any purpose. The physics system doesn't use this data, it is entirely for custom use.
world	Get the world the body is attached to.
worldDrawing	Controls whether this joint is automatically drawn when the world is drawn.

Methods

new(PhysicsJoint)

Create a from the specified base joint. The provided joint must be a joint type of .

Params:

• physicsJoint — The base joint to cast.

Create(PhysicsWorld, PhysicsWheelJointDefinition)

Create a PhysicsWheelJoint in the specified world.

Params:

• world — The world to create the joint in.
• definition — The joint definition to use.

Returns: The created joint.

Destroy(int)

Destroy the joint. If the object is owned with then you must provide the owner key it returned. Failing to do so will return a warning and the joint will not be destroyed.

Params:

• ownerKey — Optional owner key returned when using .

Returns: If the joint was destroyed or not.

DestroyBatch(ReadOnlySpan{Unity.U2D.Physics.PhysicsJoint})

Destroy a batch of joints. Owned joints will produce a warning and will not be destroyed (see ). Any invalid joints will be ignored.

Params:

• joints — The joints to destroy.

Draw()

Draw a PhysicsJoint that visually represents its current state in the world.

Equals(object)

Equals(PhysicsWheelJoint)

GetHashCode()

GetOwner()

Get the owner object associated with this joint as specified using .

Returns: The owner object associated with this joint or NULL if no owner has been specified.

operator ==(PhysicsWheelJoint, PhysicsWheelJoint)

operator implicit()

Cast to the base .

Params:

• joint — The current joint.

operator implicit()

Cast to a from the base . The provided joint must be a joint type of .

Params:

• joint — The base joint to cast.

operator !=(PhysicsWheelJoint, PhysicsWheelJoint)

SetOwner(Object)

Set the (optional) owner object associated with this joint and return an owner key that must be specified when destroying the joint with . The physics system provides access to all objects, including the ability to destroy them so this feature can be used to stop accidental destruction of objects that are owned by other objects. You can only set the owner once, multiple attempts will produce a warning. The lifetime of the specified owner object is not linked to this joint i.e. this joint will still be owned by the owner object, even if it is destroyed. It is also valid to not specify an owner object (NULL) to simply gain an owner key however it can be useful, if simply for debugging purposes and discovery, to know which object is the owner.

Params:

• owner — The object that owns this joint. This can be NULL if not required.

Returns: An owner key that must be passed to when destroying the joint.

SetOwner(Object, int)

Set the owner object using the specified owner key. You can only set the owner once, multiple attempts will produce a warning. This call does not bind the lifetime of the specified owner object, it is simply a reference. It is also valid to not specify an owner object (NULL) to simply gain an owner key however it can be useful, if simply for debugging purposes and discovery, to know which object is the owner.

Params:

• owner — The object that owns this key. This can be NULL if not required but is recommended as the key is formed in part by the hash-code of the owner object.
• ownerKey — The owner key to be used. If zero then a new owner key is created. You can use for this value although any non-zero integer will work.

SetOwnerUserData(PhysicsUserData, int)

Set that can be used for any purpose, typically by the owner only.

Params:

• physicsUserData — The user data to set.
• ownerKey — Optional owner key returned when using .

ToString()

WakeBodies()

Wake the pair of bodies the joint is constraining.

PhysicsWheelJointDefinition

A joint definition used to specify properties when creating a .

Full name: Unity.U2D.Physics.PhysicsWheelJointDefinition
Docs: Unity.U2D.Physics.PhysicsWheelJointDefinition

Properties

Name	Summary
bodyA	The first body the joint constrains.
bodyB	The second body the joint constrains.
collideConnected	Whether the shapes on the pair of bodies can come into contact.
defaultDefinition	Get a default definition.
drawScale	Controls the scaling of the joint drawing. Not all joints have scalable elements but those that do will use this scaling.
enableLimit	Enable/disable the joint translation limit.
enableMotor	Enable/disable the joint motor.
enableSpring	Enable/Disable a spring along the joint axis.
forceThreshold	The force threshold beyond which a joint event will be produced.
localAnchorA	The local anchor frame constraint relative to bodyA's origin.
localAnchorB	The local anchor frame constraint relative to bodyB's origin.
lowerTranslationLimit	The lower translation limit.
maxMotorTorque	The maximum torque the motor can apply, usually in newton-meters.
motorSpeed	The desired motor speed, usually in degrees per second.
springDamping	The spring damping, non-dimensional. Use 1 for critical damping.
springFrequency	The spring stiffness frequency, in cycles per second.
torqueThreshold	The torque threshold beyond which a joint event will be produced.
tuningDamping	Controls the joint stiffness damping, non-dimensional. Use 1 for critical damping.
tuningFrequency	Controls the joint stiffness frequency, in cycles per second.
upperTranslationLimit	The upper translation limit.
worldDrawing	Controls whether this joint is automatically drawn when the world is drawn. See .

Methods

new()

Create a default definition.

new(bool)

Create a default definition.

Params:

• useSettings — Controls whether the default settings come from the physics settings or not.

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