Unity Input System FPS Movement

README.md

Unity Input System FPS Movement

C# player script utilizing Unity's latest Input System. WASD player movement and Mouse player view rotation.

Input Actions

• Action Map Player
  • Action Movement (Pass Through, Vector 2)
    • Composite Primary (2D Vector, Digital Normalized)
      • Binding Up: W [Keyboard]
      • Binding Down: S [Keyboard]
      • Binding Left: A [Keyboard]
      • Binding Right: D [Keyboard]
  • Action View (Pass Through, Vector 2)
    • Binding Delta [Mouse]

Save Input Actions Asset. Enable Generate C# Class in the asset inspector then Apply.

Project

GameObject Player

• Cube Model
• Camera Player Camera

Attach Player.cs Script component to the GameObject and link the child Camera.

Player.cs

using UnityEngine;
using UnityEngine.InputSystem;

public class Player : MonoBehaviour {

    InputActions controls;

    public float speed = 1f;
    public float sensitivity = 1f;

    private Rigidbody rb;

    public Camera playerCamera;

    void Awake()
    {
        controls = new InputActions();
    }

    void Start()
    {
        rb = GetComponent<Rigidbody>();
        Cursor.lockState = CursorLockMode.Locked;
    }

    void Update()
    {
        Movement(controls.Player.Movement.ReadValue<Vector2>());
        View(controls.Player.View.ReadValue<Vector2>());
    }

    void Movement(Vector2 movement)
    {
        Vector3 horizontal = transform.right * movement.x;
        Vector3 vertical = transform.forward * movement.y;

        Vector3 velocity = (horizontal + vertical).normalized * speed;

        if (velocity != Vector3.zero)
        {
            rb.MovePosition(rb.position + velocity * Time.deltaTime);
        }
    }

    void View(Vector2 rotation)
    {
        Vector3 xRotation = new Vector3(-rotation.y, 0f, 0f) * sensitivity;
        Vector3 yRotation = new Vector3(0f, rotation.x, 0f) * sensitivity;

        rb.MoveRotation(rb.rotation * Quaternion.Euler(yRotation));
        playerCamera.transform.Rotate(xRotation);
    }

    void OnEnable()
    {
        controls.Player.Enable();
    }

    void OnDisable()
    {
        controls.Player.Disable();
    }
}