Step 1: Install the Input System

1. Open Unity and create a new project or open an existing one.
2. Go to Window > Package Manager.
3. In the Package Manager, select Unity Registry and search for Input System.
4. Click Install to add the Input System package to your project.

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Step 2: Set Up the Character Controller

1. Create a Player GameObject: In your scene, create a new GameObject (e.g., a capsule) to represent your player character.
2. Add Character Controller: Select the player GameObject and add the Character Controller component from the Inspector.

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Step 3: Create Input Actions

1. Add Player Input Component: On the player GameObject, add the Player Input component.
2. Create Input Action Asset: Click the Create Actions button in the Player Input component to generate a new Input Action asset. This asset will define the input mappings for your character.

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3. Define Actions: Open the Input Action asset and define actions such as Move and Jump. Assign appropriate bindings for keyboard and gamepad inputs.

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Step 4: Write the Movement Script

1. Create a C# Script: Create a new C# script (e.g., PlayerMovement.cs) and attach it to the player GameObject.
2. Implement Movement Logic: Use the following example code to handle movement based on input actions:

using UnityEngine;
using UnityEngine.InputSystem;
public class PlayerMovement : MonoBehaviour
{
private CharacterController controller;
private Vector2 moveInput;
public float speed = 5f;
void Awake()
{
controller = GetComponent<CharacterController>();
}
public void OnMove(InputAction.CallbackContext context)
{
moveInput = context.ReadValue<Vector2>();
}
void Update()
{
Vector3 move = new Vector3(moveInput.x, 0, moveInput.y);
controller.Move(move * speed * Time.deltaTime);
}
}

Step 5: Connect Input Actions to the Script

1. Link Input Actions: In the Player Input component, set the Actions field to the Input Action asset you created. Ensure that the Move action is linked to the OnMove method in your script.

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Step 6: Test Your Character

• Play the Scene: Enter Play mode in Unity and test your character's movement using the defined input actions. Adjust the speed and other parameters as needed.
  By following these steps, you can effectively implement character movement in Unity using the Input System and Character Controller, allowing for responsive and flexible input handling across different devices.