https://github.com/foopis23/unity-callback-events

A Global Event Bus for Unity
https://github.com/foopis23/unity-callback-events

callback-event events events-listeners unity unity3d-plugin

Last synced: about 23 hours ago
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A Global Event Bus for Unity

• Host: GitHub
• URL: https://github.com/foopis23/unity-callback-events
• Owner: foopis23
• License: gpl-3.0
• Created: 2021-01-15T22:31:24.000Z (almost 4 years ago)
• Default Branch: master
• Last Pushed: 2022-05-05T16:36:59.000Z (over 2 years ago)
• Last Synced: 2024-05-30T02:17:43.656Z (5 months ago)
• Topics: callback-event, events, events-listeners, unity, unity3d-plugin
• Language: C#
• Homepage:
• Size: 36.1 KB
• Stars: 5
• Watchers: 3
• Forks: 0
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE.md

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README

        
# Callback Event System

This system was designed so that the programmer can write less boilerplate code 

for event systems. This is done by combining event data and event type 

definitions into one class. This system is not supposed to replace unity events,

but rather fill the role of a global event bus. This is great for games that want

to implement the systemic design.

This system was created using 

https://github.com/quill18/UnityCallbackAndEventTutorial as starting point.

## Getting Started

- [API Reference](https://github.com/foopis23/Unity-Callback-Events/wiki/API-Reference)

## Concepts

### Event

Is a trigger that does not receive feedback from the callbacks that are 

listening to it. Think of it as someone basically shouting into a microphone 

what is currently happening to them at any given moment. Imagine you wanted to 

implement a heat mechanic. You can have a fire that is throwing events saying 

"It's HOT RIGHT HERE" and heat-sensitive listeners listening for that.

### Filter

Is a trigger that does receive feedback from the listeners. This is a way to 

override specific data coming through a filter pipeline. Say, for example, you

want to modify the damage amount for a sword when a certain ability is active. You

could achieve this with a filter that emits whenever sword damage is used and a 

filter listener that increases the damage with the ability to be active.

### EventContext

The type of Event or Filter is denoted by the EventContext Type. When registering 

an event listener, a generic is passed which represents not only the first

 parameter of the callback functions but also the type of event the listener is

 listening to. For example, if you have two events, like heat and rain, you

 would make two classes that extend EventContext that contain all of the data

 you would want to pass to the event listeners. No EventContext should use

 EventContext directly. EventContext is just an empty class to be extended.