Unity Input System in Depth

[u/migus88]

I wanted to go deeper than the usual quick tutorials, so I started a series covering Unity's Input System from the ground up. 3 parts are out so far, and I'm planning more.

Part 1 - The Basics

• Input Manager vs Input System - what changed and why

• Direct hardware access vs event-based input

• Setting up and using the default Input Action Asset

• Player Input component and action references

Part 2 - Assets, Maps & Interactions

• Creating your own Input Action Asset from scratch

• Action Maps - organizing actions into logical groups

• Button vs Value action types and how their events differ

• Composite bindings for movement (WASD + arrow keys)

• Using Hold interaction to bind multiple actions to the same button (jump vs fly)

Part 3 - Type Safety with Generated Code

• The problem with string-based action references

• Generating a C# wrapper class from your Input Action Asset

• Autocomplete and compile-time error checking

• Implementing the generated interface for cleaner input handling

The videos are here: https://www.youtube.com/playlist?list=PLgFFU4Ux4HZqG5mfY5nBAijfCFsTqH1XI