Knowledge Base - Adding Message Handlers

The [Tagging your Source Code] and [Importing Public Members] installing mechanism extract existing functionality from the object definition to publish into the iCanScript library. However, they do not provide for defining message handlers for the Unity framework. This is because the Unity messages are dynamically created at runtime and are therefore not visible in the object definitions.

The message handlers nodes have the following characteristics:

  • they are package nodes;
  • they includes child node(s) that implement the behaviour for the message;
  • their input ports contain the parameter values of the message.

The following image depicts a game object behaviour with four (4) message handlers:

Figure 1. Behaviour Message Handlers Example.
Figure 1. Behaviour Message Handlers Example.

You rarely need to add message handlers to the iCanScript library but if do, you will need to invoke the following function:

void iCS_LibraryDatabase.AddMessage(    System.Type classType,
                                            string messageName,
                                            iCS_StorageClass storageClass,
                                            iCS_Parameter[] parameters,
                                            iCS_FunctionReturn functionReturn,
                                            string description,
                                            string iconPath)  
Table 1. AddMessage parameter descriptions.
Parameter Name Description
classType The programatic type that will accept the message
messageName The name of the message to handle
storageClass Either iCS_Storage.Class or iCS_Storage.Instance
parameters Message parameters. See iCS_UnityClasses file for example.
functionReturn Message return type. See iCS_UnityClasses file for example.
description A short description of the message.
iconPath The icon to use when the message handler is iconized.

Note: The iCanScript distribution installs the Unity message handlers in file: “iCanScript/Editor/NodeInstaller/iCS_UnityClasses.cs”. Please use the Unity installer as example to create your own message handlers.


Created : 2015-03-16 20:15:46, Last Modified : 2015-03-16 20:15:46

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