Unity Callbacks

MonoBehaviour

class in UnityEngine

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Inherits from: Behaviour

Description

MonoBehaviour is the base class every script derives from.

Using Javascript every script automatically derives from MonoBehaviour. When using C# or Boo you have to explicitly derive from MonoBehaviour.

Note: The checkbox for disabling a MonoBehavior (on the editor) will only prevent Start(), Awake(), Update(), FixedUpdate(), and OnGUI() from executing. If none of these functions are present, the checkbox is not displayed.

See Also: The chapter on scripting in the manual.

Variables

useGUILayout Disabling this lets you skip the GUI layout phase.

Public Functions

CancelInvoke Cancels all Invoke calls on this MonoBehaviour.
Invoke Invokes the method methodName in time seconds.
InvokeRepeating Invokes the method methodName in time seconds, then repeatedly every repeatRate seconds.
IsInvoking Is any invoke on methodName pending?
StartCoroutine Starts a coroutine.
StopAllCoroutines Stops all coroutines running on this behaviour.
StopCoroutine Stops the first coroutine named methodName, or the coroutine stored in routine running on this behaviour.

Static Functions

print Logs message to the Unity Console (identical to Debug.Log).

Messages

Awake Awake is called when the script instance is being loaded.
FixedUpdate This function is called every fixed framerate frame, if the MonoBehaviour is enabled.
LateUpdate LateUpdate is called every frame, if the Behaviour is enabled.
OnAnimatorIK Callback for setting up animation IK (inverse kinematics).
OnAnimatorMove Callback for processing animation movements for modifying root motion.
OnApplicationFocus Sent to all game objects when the player gets or loses focus.
OnApplicationPause Sent to all game objects when the player pauses.
OnApplicationQuit Sent to all game objects before the application is quit.
OnAudioFilterRead If OnAudioFilterRead is implemented, Unity will insert a custom filter into the audio DSP chain.
OnBecameInvisible OnBecameInvisible is called when the renderer is no longer visible by any camera.
OnBecameVisible OnBecameVisible is called when the renderer became visible by any camera.
OnCollisionEnter OnCollisionEnter is called when this collider/rigidbody has begun touching another rigidbody/collider.
OnCollisionEnter2D Sent when an incoming collider makes contact with this object’s collider (2D physics only).
OnCollisionExit OnCollisionExit is called when this collider/rigidbody has stopped touching another rigidbody/collider.
OnCollisionExit2D Sent when a collider on another object stops touching this object’s collider (2D physics only).
OnCollisionStay OnCollisionStay is called once per frame for every collider/rigidbody that is touching rigidbody/collider.
OnCollisionStay2D Sent each frame where a collider on another object is touching this object’s collider (2D physics only).
OnConnectedToServer Called on the client when you have successfully connected to a server.
OnControllerColliderHit OnControllerColliderHit is called when the controller hits a collider while performing a Move.
OnDestroy This function is called when the MonoBehaviour will be destroyed.
OnDisable This function is called when the behaviour becomes disabled () or inactive.
OnDisconnectedFromServer Called on the client when the connection was lost or you disconnected from the server.
OnDrawGizmos Implement OnDrawGizmos if you want to draw gizmos that are also pickable and always drawn.
OnDrawGizmosSelected Implement this OnDrawGizmosSelected if you want to draw gizmos only if the object is selected.
OnEnable This function is called when the object becomes enabled and active.
OnFailedToConnect Called on the client when a connection attempt fails for some reason.
OnFailedToConnectToMasterServer Called on clients or servers when there is a problem connecting to the MasterServer.
OnGUI OnGUI is called for rendering and handling GUI events.
OnJointBreak Called when a joint attached to the same game object broke.
OnJointBreak2D Called when a Joint2D attached to the same game object breaks.
OnMasterServerEvent Called on clients or servers when reporting events from the MasterServer.
OnMouseDown OnMouseDown is called when the user has pressed the mouse button while over the GUIElement or Collider.
OnMouseDrag OnMouseDrag is called when the user has clicked on a GUIElement or Collider and is still holding down the mouse.
OnMouseEnter Called when the mouse enters the GUIElement or Collider.
OnMouseExit Called when the mouse is not any longer over the GUIElement or Collider.
OnMouseOver Called every frame while the mouse is over the GUIElement or Collider.
OnMouseUp OnMouseUp is called when the user has released the mouse button.
OnMouseUpAsButton OnMouseUpAsButton is only called when the mouse is released over the same GUIElement or Collider as it was pressed.
OnNetworkInstantiate Called on objects which have been network instantiated with Network.Instantiate.
OnParticleCollision OnParticleCollision is called when a particle hits a collider.
OnParticleTrigger OnParticleTrigger is called when any particles in a particle system meet the conditions in the trigger module.
OnPlayerConnected Called on the server whenever a new player has successfully connected.
OnPlayerDisconnected Called on the server whenever a player disconnected from the server.
OnPostRender OnPostRender is called after a camera finished rendering the scene.
OnPreCull OnPreCull is called before a camera culls the scene.
OnPreRender OnPreRender is called before a camera starts rendering the scene.
OnRenderImage OnRenderImage is called after all rendering is complete to render image.
OnRenderObject OnRenderObject is called after camera has rendered the scene.
OnSerializeNetworkView Used to customize synchronization of variables in a script watched by a network view.
OnServerInitialized Called on the server whenever a Network.InitializeServer was invoked and has completed.
OnTransformChildrenChanged This function is called when the list of children of the transform of the GameObject has changed.
OnTransformParentChanged This function is called when the parent property of the transform of the GameObject has changed.
OnTriggerEnter OnTriggerEnter is called when the Collider other enters the trigger.
OnTriggerEnter2D Sent when another object enters a trigger collider attached to this object (2D physics only).
OnTriggerExit OnTriggerExit is called when the Collider other has stopped touching the trigger.
OnTriggerExit2D Sent when another object leaves a trigger collider attached to this object (2D physics only).
OnTriggerStay OnTriggerStay is called once per frame for every Collider other that is touching the trigger.
OnTriggerStay2D Sent each frame where another object is within a trigger collider attached to this object (2D physics only).
OnValidate This function is called when the script is loaded or a value is changed in the inspector (Called in the editor only).
OnWillRenderObject OnWillRenderObject is called for each camera if the object is visible.
Reset Reset to default values.
Start Start is called on the frame when a script is enabled just before any of the Update methods is called the first time.
Update Update is called every frame, if the MonoBehaviour is enabled.

Inherited members

Variables

enabled Enabled Behaviours are Updated, disabled Behaviours are not.
isActiveAndEnabled Has the Behaviour had enabled called.
gameObject The game object this component is attached to. A component is always attached to a game object.
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?
name The name of the object.

Public 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.
GetComponentInParent Returns the component of Type type in the GameObject or any of its parents.
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.
GetComponentsInParent Returns all components of Type type in the GameObject or any of its parents.
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.
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.
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 Returns a copy of the object original.

Operators

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

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