Advanced 2D Movement System with Dash and Jump (Unity C#)

A highly optimized and fluid C# player movement controller for 2D games in Unity. Features instant responsive horizontal movement, custom gravity jump, and an advanced dash mechanic. Perfect for platformers, metroidvanias, and action games.

[HOW TO SETUP]

1. Attach this script to your Player GameObject.

2. Add a 'Rigidbody2D' component to your Player and set Collision Detection to 'Continuous'.

3. CRITICAL: Create a 'Physics Material 2D', set its 'Friction' value to 0, and drag it into the Material slot of the Player's Rigidbody2D to prevent getting stuck on walls.

Also, add a GameObject named "GroundCheck" as a child of the player, and set its layer to "Ground" in the Inspector.