unity character controller code example

Example 1: first person camera controller unity

//Fixed the issues with the previous controller
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class CameraLook : MonoBehaviour
{
	public float minX = -60f;
	public float maxX = 60f;

	public float sensitivity;
	public Camera cam;

	float rotY = 0f;
	float rotX = 0f;

	void Start()
	{
		Cursor.lockState = CursorLockMode.Locked;
		Cursor.visible = false;
	}

    void Update()
    {
		rotY += Input.GetAxis("Mouse X") * sensitivity;
		rotX += Input.GetAxis("Mouse Y") * sensitivity;

		rotX = Mathf.Clamp(rotX, minX, maxX);

		transform.localEulerAngles = new Vector3(0, rotY, 0);
		cam.transform.localEulerAngles = new Vector3(-rotX, 0, 0);

		if (Input.GetKeyDown(KeyCode.Escape))
		{
        	//Mistake happened here vvvv
			Cursor.lockState = CursorLockMode.None;
			Cursor.visible = true;
		}

		if (Cursor.visible && Input.GetMouseButtonDown(1))
		{
			Cursor.lockState = CursorLockMode.Locked;
			Cursor.visible = false;
		}
	}
}

Example 2: unity 3d character controller

using UnityEngine;
using System.Collections;

// This script moves the character controller forward
// and sideways based on the arrow keys.
// It also jumps when pressing space.
// Make sure to attach a character controller to the same game object.
// It is recommended that you make only one call to Move or SimpleMove per frame.

public class ExampleClass : MonoBehaviour
{
    CharacterController characterController;

    public float speed = 6.0f;
    public float jumpSpeed = 8.0f;
    public float gravity = 20.0f;

    private Vector3 moveDirection = Vector3.zero;

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

    void Update()
    {
        if (characterController.isGrounded)
        {
            // We are grounded, so recalculate
            // move direction directly from axes

            moveDirection = new Vector3(Input.GetAxis("Horizontal"), 0.0f, Input.GetAxis("Vertical"));
            moveDirection *= speed;

            if (Input.GetButton("Jump"))
            {
                moveDirection.y = jumpSpeed;
            }
        }

        // 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)
        moveDirection.y -= gravity * Time.deltaTime;

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

Example 3: how to make a simple character controller in unity

public float speed;

    private Rigidbody2D rb2d;

    void Start()
    {
        rb2d = GetComponent<Rigidbody2D>();
    }

    void Update()
    {
        float moveHorizontal = Input.GetAxis("Horizontal");
        float moveVertical = Input.GetAxis("Vertical");
        Vector2 movement = new Vector2(moveHorizontal, moveVertical);

        rb2d.AddForce(movement * speed);
    }
}
//make sure to attach a rigidbody to the character, and you can mess around with it

Example 4: character controller code

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

public class Example : MonoBehaviour
{
    private CharacterController controller;
    private Vector3 playerVelocity;
    private bool groundedPlayer;
    private float playerSpeed = 2.0f;
    private float jumpHeight = 1.0f;
    private float gravityValue = -9.81f;

    private void Start()
    {
        controller = gameObject.AddComponent<CharacterController>();
    }

    void Update()
    {
        groundedPlayer = controller.isGrounded;
        if (groundedPlayer && playerVelocity.y < 0)
        {
            playerVelocity.y = 0f;
        }

        Vector3 move = new Vector3(Input.GetAxis("Horizontal"), 0, Input.GetAxis("Vertical"));
        controller.Move(move * Time.deltaTime * playerSpeed);

        if (move != Vector3.zero)
        {
            gameObject.transform.forward = move;
        }

        // Changes the height position of the player..
        if (Input.GetButtonDown("Jump") && groundedPlayer)
        {
            playerVelocity.y += Mathf.Sqrt(jumpHeight * -3.0f * gravityValue);
        }

        playerVelocity.y += gravityValue * Time.deltaTime;
        controller.Move(playerVelocity * Time.deltaTime);
    }
}

Example 5: character controller unity 2d

using UnityEngine;
using UnityEngine.Events;

public class CharacterController2D : MonoBehaviour
{
	[SerializeField] private float m_JumpForce = 400f;							// Amount of force added when the player jumps.
	[Range(0, 1)] [SerializeField] private float m_CrouchSpeed = .36f;			// Amount of maxSpeed applied to crouching movement. 1 = 100%
	[Range(0, .3f)] [SerializeField] private float m_MovementSmoothing = .05f;	// How much to smooth out the movement
	[SerializeField] private bool m_AirControl = false;							// Whether or not a player can steer while jumping;
	[SerializeField] private LayerMask m_WhatIsGround;							// A mask determining what is ground to the character
	[SerializeField] private Transform m_GroundCheck;							// A position marking where to check if the player is grounded.
	[SerializeField] private Transform m_CeilingCheck;							// A position marking where to check for ceilings
	[SerializeField] private Collider2D m_CrouchDisableCollider;				// A collider that will be disabled when crouching

	const float k_GroundedRadius = .2f; // Radius of the overlap circle to determine if grounded
	private bool m_Grounded;            // Whether or not the player is grounded.
	const float k_CeilingRadius = .2f; // Radius of the overlap circle to determine if the player can stand up
	private Rigidbody2D m_Rigidbody2D;
	private bool m_FacingRight = true;  // For determining which way the player is currently facing.
	private Vector3 m_Velocity = Vector3.zero;

	[Header("Events")]
	[Space]

	public UnityEvent OnLandEvent;

	[System.Serializable]
	public class BoolEvent : UnityEvent<bool> { }

	public BoolEvent OnCrouchEvent;
	private bool m_wasCrouching = false;

	private void Awake()
	{
		m_Rigidbody2D = GetComponent<Rigidbody2D>();

		if (OnLandEvent == null)
			OnLandEvent = new UnityEvent();

		if (OnCrouchEvent == null)
			OnCrouchEvent = new BoolEvent();
	}

	private void FixedUpdate()
	{
		bool wasGrounded = m_Grounded;
		m_Grounded = false;

		// The player is grounded if a circlecast to the groundcheck position hits anything designated as ground
		// This can be done using layers instead but Sample Assets will not overwrite your project settings.
		Collider2D[] colliders = Physics2D.OverlapCircleAll(m_GroundCheck.position, k_GroundedRadius, m_WhatIsGround);
		for (int i = 0; i < colliders.Length; i++)
		{
			if (colliders[i].gameObject != gameObject)
			{
				m_Grounded = true;
				if (!wasGrounded)
					OnLandEvent.Invoke();
			}
		}
	}


	public void Move(float move, bool crouch, bool jump)
	{
		// If crouching, check to see if the character can stand up
		if (!crouch)
		{
			// If the character has a ceiling preventing them from standing up, keep them crouching
			if (Physics2D.OverlapCircle(m_CeilingCheck.position, k_CeilingRadius, m_WhatIsGround))
			{
				crouch = true;
			}
		}

		//only control the player if grounded or airControl is turned on
		if (m_Grounded || m_AirControl)
		{

			// If crouching
			if (crouch)
			{
				if (!m_wasCrouching)
				{
					m_wasCrouching = true;
					OnCrouchEvent.Invoke(true);
				}

				// Reduce the speed by the crouchSpeed multiplier
				move *= m_CrouchSpeed;

				// Disable one of the colliders when crouching
				if (m_CrouchDisableCollider != null)
					m_CrouchDisableCollider.enabled = false;
			} else
			{
				// Enable the collider when not crouching
				if (m_CrouchDisableCollider != null)
					m_CrouchDisableCollider.enabled = true;

				if (m_wasCrouching)
				{
					m_wasCrouching = false;
					OnCrouchEvent.Invoke(false);
				}
			}

			// Move the character by finding the target velocity
			Vector3 targetVelocity = new Vector2(move * 10f, m_Rigidbody2D.velocity.y);
			// And then smoothing it out and applying it to the character
			m_Rigidbody2D.velocity = Vector3.SmoothDamp(m_Rigidbody2D.velocity, targetVelocity, ref m_Velocity, m_MovementSmoothing);

			// If the input is moving the player right and the player is facing left...
			if (move > 0 && !m_FacingRight)
			{
				// ... flip the player.
				Flip();
			}
			// Otherwise if the input is moving the player left and the player is facing right...
			else if (move < 0 && m_FacingRight)
			{
				// ... flip the player.
				Flip();
			}
		}
		// If the player should jump...
		if (m_Grounded && jump)
		{
			// Add a vertical force to the player.
			m_Grounded = false;
			m_Rigidbody2D.AddForce(new Vector2(0f, m_JumpForce));
		}
	}


	private void Flip()
	{
		// Switch the way the player is labelled as facing.
		m_FacingRight = !m_FacingRight;

		// Multiply the player's x local scale by -1.
		Vector3 theScale = transform.localScale;
		theScale.x *= -1;
		transform.localScale = theScale;
	}
}

Example 6: character control script unity

Basic Unity character control script:

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

public class Example : MonoBehaviour
{
  private CharacterContoller contorller;
  private Vector3 playerVelocity;
  private bool groundedPlayer;
  private float playerSpeed = 2.0f;
  private float jumpHeight = 1.0f;
  private float gravityValue = -9.81f;
  
   private void Start()
    {
        controller = gameObject.AddComponent<CharacterController>();
    }

    void Update()
    {
        groundedPlayer = controller.isGrounded;
        if (groundedPlayer && playerVelocity.y < 0)
        {
            playerVelocity.y = 0f;
        }

        Vector3 move = new Vector3(Input.GetAxis("Horizontal"), 0, Input.GetAxis("Vertical"));
        controller.Move(move * Time.deltaTime * playerSpeed);

        if (move != Vector3.zero)
        {
            gameObject.transform.forward = move;
        }

        // Changes the height position of the player..
        if (Input.GetButtonDown("Jump") && groundedPlayer)
        {
            playerVelocity.y += Mathf.Sqrt(jumpHeight * -3.0f * gravityValue);
        }

        playerVelocity.y += gravityValue * Time.deltaTime;
        controller.Move(playerVelocity * Time.deltaTime);
    }
}