Handles input, raycasting, and sending events.
The EventSystem is responsible for processing and handling events in a Unity scene. A scene should only contain one EventSystem. The EventSystem works in conjunction with a number of modules and mostly just holds state and delegates functunality to specific, overrideable, components.
When the EventSystem is started it searches for any BaseInputModules attached to the same GameObject ands adds them to an internal list. On update each attached module receives an UpdateModules call, where the module can modify internal state. After each module has been 'Updated' the active module has the Process call executed. This is where custom module processing can take place.
| current | Return the current EventSystem. |
| alreadySelecting | Returns true if the EventSystem is already in a SetSelectedGameObject. |
| currentInputModule | The currently active BaseInputModule. |
| currentSelectedGameObject | The GameObject currently considered active by the EventSystem. |
| firstSelectedGameObject | The GameObject that was selected first. |
| pixelDragThreshold | The soft area for dragging in pixels. |
| sendNavigationEvents | Should the EventSystem allow navigation events (move / submit / cancel). |
| IsPointerOverGameObject | Is the pointer with the given ID over an EventSystem object? |
| OnDisable | See MonoBehaviour.OnDisable. |
| RaycastAll | Raycast into the scene using all configured BaseRaycasters. |
| SetSelectedGameObject | Set the object as selected. Will send an OnDeselect the the old selected object and OnSelect to the new selected object. |
| UpdateModules | Recalculate the internal list of BaseInputModules. |
| OnDisable | See MonoBehaviour.OnDisable. |
| 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). |
| useGUILayout | Disabling this lets you skip the GUI layout phase. |
| hideFlags | Should the object be hidden, saved with the scene or modifiable by the user? |
| name | The name of the object. |
| 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. |
| 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. |
| GetInstanceID | Returns the instance id of the object. |
| ToString | Returns the name of the game object. |
| Awake | See MonoBehaviour.Awake. |
| IsActive | Returns true if the GameObject and the Component are active. |
| IsDestroyed | Returns true if the native representation of the behaviour has been destroyed. |
| OnBeforeTransformParentChanged | See MonoBehaviour.OnBeforeTransformParentChanged. |
| OnCanvasGroupChanged | See MonoBehaviour.OnCanvasGroupChanged. |
| OnCanvasHierarchyChanged | Called when the state of the parent Canvas is changed. |
| OnDestroy | See MonoBehaviour.OnDestroy. |
| OnDidApplyAnimationProperties | See MonoBehaviour.OnDidApplyAnimationProperties. |
| OnEnable | See MonoBehaviour.OnEnable. |
| OnRectTransformDimensionsChange | See MonoBehaviour.OnRectTransformDimensionsChange. |
| OnTransformParentChanged | See MonoBehaviour.OnRectTransformParentChanged. |
| OnValidate | See MonoBehaviour.OnValidate. |
| Reset | See MonoBehaviour.Reset. |
| Start | See MonoBehaviour.Start. |
| Awake | See MonoBehaviour.Awake. |
| OnBeforeTransformParentChanged | See MonoBehaviour.OnBeforeTransformParentChanged. |
| OnCanvasGroupChanged | See MonoBehaviour.OnCanvasGroupChanged. |
| OnCanvasHierarchyChanged | Called when the state of the parent Canvas is changed. |
| OnDestroy | See MonoBehaviour.OnDestroy. |
| OnDidApplyAnimationProperties | See MonoBehaviour.OnDidApplyAnimationProperties. |
| OnEnable | See MonoBehaviour.OnEnable. |
| OnRectTransformDimensionsChange | See MonoBehaviour.OnRectTransformDimensionsChange. |
| OnTransformParentChanged | See MonoBehaviour.OnRectTransformParentChanged. |
| OnValidate | See MonoBehaviour.OnValidate. |
| Reset | See MonoBehaviour.Reset. |
| Start | See MonoBehaviour.Start. |
| Logs message to the Unity Console (identical to Debug.Log). | |
| 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. |
| 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. |
| 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. |
| 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. |
| OnLevelWasLoaded | This function is called after a new level was loaded. |
| 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. |
| 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 once 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. |