Unity message push

Send Message Mechanism

Unity Provided Message push mechanism It can be very convenient for our script development , It implements a pseudo listener model , Use of is The reflex mechanism .

About message push , There are three commonly used functions ：SendMessage、SendMessageUpwards、BroadcastMessage. These functions are all GameObject perhaps Component Member function of , Just get an object , Then call these three functions to push a message .

SendMessage: Call each in this GameObject MonoBehaviour It's called methodName Methods . Be careful , Messages are not sent to inactive objects

SendMessageUpwards: Call each in this GameObject MonoBehaviour On or in this behavior Each parent It's called methodName Methods .

BroadcastMessage: Call this GameObject or its Any child Each of the MonoBehaviour It's called methodName Methods .

Messages are not sent to inactive objects . When unity When the method in the script is static , This method is invalid , So you can only call non static methods

Unity Event Mechanism

And UGUI The event mechanism is the same , By registering and removing listeners , Can be in Inspector Set relevant methods in the panel .

C Sharp Event Mechanism

Use C Sharp Of event.