unity fps movement script code example

Example 1: fps movment unity

public float walkSpeed = 6.0F;
public float jumpSpeed = 8.0F;
public float runSpeed = 8.0F;
public float gravity = 20.0F;

private Vector3 moveDirection = Vector3.zero;
private CharacterController controller;

void Start()
{
    controller = GetComponent<CharacterController>();
}

void Update()
{
    if (controller.isGrounded)
    {
        moveDirection = new Vector3(Input.GetAxis("Horizontal"), 0, Input.GetAxis("Vertical"));
        moveDirection = transform.TransformDirection(moveDirection);
        moveDirection *= walkSpeed;
        if (Input.GetButton("Jump"))
            moveDirection.y = jumpSpeed;
    }
    moveDirection.y -= gravity * Time.deltaTime;
    controller.Move(moveDirection * Time.deltaTime);
}

Example 2: how to make a first person controller in c#

public float speed = 10.0f;
     public float straffeSpeed = 7.0f;
     public float jumpHeight = 3.0f;
     Rigidbody rb;
     
     
 
     // Start is called before the first frame update
     void Start()
     {
         Cursor.lockState = CursorLockMode.Locked;
         rb = GetComponent<Rigidbody>();
     }
 
     // Update is called once per frame
     void Update()
     {
         float DisstanceToTheGround = GetComponent<Collider>().bounds.extents.y;
         bool IsGrounded = Physics.Raycast(transform.position, Vector3.down, DisstanceToTheGround + 0.1f);
 
         float translation = Input.GetAxis("Vertical") * speed;
         float straffe = Input.GetAxis("Horizontal") * straffeSpeed;
         translation *= Time.deltaTime;
         straffe *= Time.deltaTime;
 
 
         //anim.SetTrigger("isWalking");
 
         transform.Translate(straffe, 0, translation);
         //rb.velocity = transform.forward * translation + transform.right * straffe ;
         
 
         if(IsGrounded && Input.GetKeyDown("space"))
         {
             Debug.Log("JUMP!");
             rb.velocity = new Vector3(0, jumpHeight, 0);            
         }
         
         if (Input.GetKey(KeyCode.R))
         {
             Scene scene = SceneManager.GetActiveScene(); 
             SceneManager.LoadScene(scene.name);
         }
 
         if (Input.GetKeyDown("escape"))
         {
             Application.Quit();
             //Cursor.lockState = CursorLockMode.None;
         }
 
     }
 }

Example 3: 3d fps movement script

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

[RequireComponent(typeof(CharacterController))]

public class SC_FPSController : MonoBehaviour
{
    public float walkingSpeed = 7.5f;
    public float runningSpeed = 11.5f;
    public float jumpSpeed = 8.0f;
    public float gravity = 20.0f;
    public Camera playerCamera;
    public float lookSpeed = 2.0f;
    public float lookXLimit = 45.0f;

    CharacterController characterController;
    Vector3 moveDirection = Vector3.zero;
    float rotationX = 0;

    [HideInInspector]
    public bool canMove = true;

    void Start()
    {
        characterController = GetComponent<CharacterController>();

        // Lock cursor
        Cursor.lockState = CursorLockMode.Locked;
        Cursor.visible = false;
    }

    void Update()
    {
        // We are grounded, so recalculate move direction based on axes
        Vector3 forward = transform.TransformDirection(Vector3.forward);
        Vector3 right = transform.TransformDirection(Vector3.right);
        // Press Left Shift to run
        bool isRunning = Input.GetKey(KeyCode.LeftShift);
        float curSpeedX = canMove ? (isRunning ? runningSpeed : walkingSpeed) * Input.GetAxis("Vertical") : 0;
        float curSpeedY = canMove ? (isRunning ? runningSpeed : walkingSpeed) * Input.GetAxis("Horizontal") : 0;
        float movementDirectionY = moveDirection.y;
        moveDirection = (forward * curSpeedX) + (right * curSpeedY);

        if (Input.GetButton("Jump") && canMove && characterController.isGrounded)
        {
            moveDirection.y = jumpSpeed;
        }
        else
        {
            moveDirection.y = movementDirectionY;
        }

        // Apply gravity. Gravity is multiplied by deltaTime twice (once here, and once below
        // when the moveDirection is multiplied by deltaTime). This is because gravity should be applied
        // as an acceleration (ms^-2)
        if (!characterController.isGrounded)
        {
            moveDirection.y -= gravity * Time.deltaTime;
        }

        // Move the controller
        characterController.Move(moveDirection * Time.deltaTime);

        // Player and Camera rotation
        if (canMove)
        {
            rotationX += -Input.GetAxis("Mouse Y") * lookSpeed;
            rotationX = Mathf.Clamp(rotationX, -lookXLimit, lookXLimit);
            playerCamera.transform.localRotation = Quaternion.Euler(rotationX, 0, 0);
            transform.rotation *= Quaternion.Euler(0, Input.GetAxis("Mouse X") * lookSpeed, 0);
        }
    }
}