Unity Script Reference:

Rigidbody2DNamespace: UnityEngine
Parent class: Component

Description

Rigidbody physics component for 2D sprites.

The Rigidbody2D class essentially provides the same functionality in 2D that the Rigidbody class provides in 3D. Adding a Rigidbody2D component to a sprite puts in under the control of the physics engine. By itself, this means that the sprite will be affected by gravity and can be controlled from scripts using forces. By adding the appropriate collider component, the sprite will also respond to collisions with other sprites. This behaviour comes entirely from Unity's physics system; very little code is required to get impressive and authentic physical behaviour and allows for "emergent" gameplay that was not explicitly coded into the game.

See Also: Rigidbody class, SpriteRenderer class, Collider2D class, Joint2D class.

Variables

angularDrag	Coefficient of angular drag.
angularVelocity	Angular velocity in degrees per second.
collisionDetectionMode	The method used by the physics engine to check if two objects have collided.
drag	Coefficient of drag.
fixedAngle	Should the rigidbody be prevented from rotating?
gravityScale	The degree to which this object is affected by gravity.
interpolation	Physics interpolation used between updates.
isKinematic	Should this rigidbody be taken out of physics control?
mass	Mass of the rigidbody.
sleepMode	The sleep state that the rigidbody will initially be in.
velocity	Linear velocity of the rigidbody.

Functions

AddForce	Apply a force to the rigidbody.
AddForceAtPosition	Apply a force at a given position in space.
AddTorque	Apply a torque at the rigidbody's centre of mass.
IsAwake	Is the rigidbody "awake"?
IsSleeping	Is the rigidbody "sleeping"?
Sleep	Make the rigidbody "sleep".
WakeUp	Disables the "sleeping" state of a rigidbody.

Inherited members

Variables

animation	The Animation attached to this GameObject (null if there is none attached).
audio	The AudioSource attached to this GameObject (null if there is none attached).
camera	The Camera attached to this GameObject (null if there is none attached).
collider	The Collider attached to this GameObject (null if there is none attached).
collider2D	The Collider2D component attached to the object.
constantForce	The ConstantForce attached to this GameObject (null if there is none attached).
gameObject	The game object this component is attached to. A component is always attached to a game object.
guiText	The GUIText attached to this GameObject (null if there is none attached).
guiTexture	The GUITexture attached to this GameObject (Read Only). (null if there is none attached).
hingeJoint	The HingeJoint attached to this GameObject (null if there is none attached).
light	The Light attached to this GameObject (null if there is none attached).
networkView	The NetworkView attached to this GameObject (Read Only). (null if there is none attached).
particleEmitter	The ParticleEmitter attached to this GameObject (null if there is none attached).
particleSystem	The ParticleSystem attached to this GameObject (null if there is none attached).
renderer	The Renderer attached to this GameObject (null if there is none attached).
rigidbody	The Rigidbody attached to this GameObject (null if there is none attached).
rigidbody2D	The Rigidbody2D that is attached to the Component's GameObject.
tag	The tag of this game object.
transform	The Transform attached to this GameObject (null if there is none attached).
hideFlags	Should the object be hidden, saved with the scene or modifiable by the user?
m_CachedPtr
m_InstanceID
name	The name of the object.

Functions

BroadcastMessage	Calls the method named methodName on every MonoBehaviour in this game object or any of its children.
CompareTag	Is this game object tagged with tag?
GetComponent	Returns the component of Type type if the game object has one attached, null if it doesn't.
GetComponentInChildren	Returns the component of Type type in the GameObject or any of its children using depth first search.
GetComponents	Returns all components of Type type in the GameObject.
GetComponentsInChildren	Returns all components of Type type in the GameObject or any of its children.
SendMessage	Calls the method named methodName on every MonoBehaviour in this game object.
SendMessageUpwards	Calls the method named methodName on every MonoBehaviour in this game object and on every ancestor of the behaviour.
GetHashCode
GetInstanceID	Returns the instance id of the object.
ToString	Returns the name of the game object.

Static Functions

Destroy	Removes a gameobject, component or asset.
DestroyImmediate	Destroys the object obj immediately. You are strongly recommended to use Destroy instead.
DontDestroyOnLoad	Makes the object target not be destroyed automatically when loading a new scene.
FindObjectOfType	Returns the first active loaded object of Type type.
FindObjectsOfType	Returns a list of all active loaded objects of Type type.
Instantiate	Clones the object original and returns the clone.

Operators

bool	Does the object exist?
operator !=	Compares if two objects refer to a different object.
operator ==	Compares if two objects refer to the same.