Develop Reference

Smooth movement using joystick in Unity3D

I try to accomplish smooth movement with the Xbox Controller, however it is very snappy, even though snap is turned of and deadzone set to 0. Movement with keyboard however is very smooth, so I assume GetAxis does not work with a controller, it's always GetAxisRaw. So I switched to GetAxisRaw and tried to smooth everything out. Even with acceleration, the movement is still very jagged and snappy. Does anyone have an idea how to get a nice smooth movement with a controller, like keyboard + GetAxis?
public class PlayerController : MonoBehaviour
{
CharacterController cc;
float acceleration = 0;
[SerializeField] float speed;
[SerializeField] float acclerationRate = 1;
private void Awake()
{
cc = GetComponent<CharacterController>();
}
private void Update()
{
float deadzone = 0f;
Vector2 stickInput = new Vector2(Input.GetAxisRaw("Horizontal"), Input.GetAxisRaw("Vertical"));
if (stickInput.magnitude < deadzone)
stickInput = Vector2.zero;
else
stickInput = stickInput.normalized * ((stickInput.magnitude - deadzone) / (1 - deadzone));
if (stickInput.x != 0 || stickInput.y != 0)
{
acceleration += Time.deltaTime * acclerationRate;
acceleration = Mathf.Clamp01(acceleration);
}
else
{
acceleration = 0;
}
cc.Move(new Vector3(stickInput.x, 0, stickInput.y) * speed * acceleration * Time.deltaTime);
}
}

I would keep track of your player's velocity and use MoveTowards to adjust it based on the input. Don't forget to clamp your input's magnitude so your character doesn't travel diagonally faster than orthogonally in the event the player prefers keyboard input.
CharacterController cc;
[SerializeField] float speed;
[SerializeField] float acclerationRate = 1;
[SerializeField] float deadzone = 0f;
Vector3 velocity;
private void Awake()
{
cc = GetComponent<CharacterController>();
velocity = Vector3.zero;
}
private void Update()
{
Vector3 stickInput = new Vector3(Input.GetAxisRaw("Horizontal"), 0f,
Input.GetAxisRaw("Vertical"));
if (stickInput.magnitude < deadzone)
}
stickInput = Vector3.zero;
}
else
{
float clampedMag = Mathf.Min(1f, stickInput.magnitude);
stickInput = stickInput.normalized * (clampedMag - deadzone) / (1f - deadzone);
}
velocity = Vector3.MoveTowards(velocity, stickInput,
accelerationRate * Time.deltaTime);
cc.Move(velocity * Time.deltaTime);
}

Why do objects stutter while I move and the camera is rotating?

I have began developing an fps script and followed a tutorial to help with the script. Everything works great now but the only issue is any objects in the view seem to stutter whenever the player is moving and rotating at the same time.
The script for the player's movement and camera rotation is below.
Can anybody point me in the right direction?
Thank you.
{
public Transform cam;
public Rigidbody rb;
public float camRotationSpeed = 5f;
public float camMinimumY = -60f;
public float camMaximumY = 75f;
public float rotationSmoothSpeed = 10f;
public float walkSpeed = 9f;
public float runSpeed = 14f;
public float maxSpeed = 20f;
public float jumpPower = 30f;
public float extraGravity = 45;
float bodyRotationX;
float camRotationY;
Vector3 directionIntentX;
Vector3 directionIntentY;
float speed;
public bool grounded;
void Update()
{
LookRotation();
Movement();
ExtraGravity();
GroundCheck();
if(grounded && Input.GetButtonDown("Jump"))
{
Jump();
}
}
void LookRotation()
{
Cursor.visible = false;
Cursor.lockState = CursorLockMode.Locked;
bodyRotationX += Input.GetAxis("Mouse X") * camRotationSpeed;
camRotationY += Input.GetAxis("Mouse Y") * camRotationSpeed;
camRotationY = Mathf.Clamp(camRotationY, camMinimumY, camMaximumY);
Quaternion camTargetRotation = Quaternion.Euler(-camRotationY, 0, 0);
Quaternion bodyTargetRotation = Quaternion.Euler(0, bodyRotationX, 0);
transform.rotation = Quaternion.Lerp(transform.rotation, bodyTargetRotation, Time.deltaTime * rotationSmoothSpeed);
cam.localRotation = Quaternion.Lerp(cam.localRotation, camTargetRotation, Time.deltaTime * rotationSmoothSpeed);
}
void Movement()
{
directionIntentX = cam.right;
directionIntentX.y = 0;
directionIntentX.Normalize();
directionIntentY = cam.forward;
directionIntentY.y = 0;
directionIntentY.Normalize();
rb.velocity = directionIntentY * Input.GetAxis("Vertical") * speed + directionIntentX * Input.GetAxis("Horizontal") * speed + Vector3.up * rb.velocity.y;
rb.velocity = Vector3.ClampMagnitude(rb.velocity, maxSpeed);
if (Input.GetKey(KeyCode.LeftShift))
{
speed = runSpeed;
}
if (!Input.GetKey(KeyCode.LeftShift))
{
speed = walkSpeed;
}
}
void ExtraGravity()
{
rb.AddForce(Vector3.down * extraGravity);
}
void GroundCheck()
{
RaycastHit groundHit;
grounded = Physics.Raycast(transform.position, -transform.up, out groundHit, 1.25f);
}
void Jump()
{
rb.AddForce(Vector3.up * jumpPower, ForceMode.Impulse);
}
}

This probably happens because the frame needs to update the camera rotation and the player position at the same time. i would suggest doing the rotation of the camera in fixed update. because this will run at the end of each frame.
like this:
void FixedUpdate()
{
LookRotation();
}
another thing i would suggest is to move the player while the groundcheck is being ran, because if you do it seperately i can see a bug coming up when the player moves faster then the code can run or something. so a tip would be or to run it inside the movement method, or call the method while you are calling the movement method.
this:
void Movement()
{
directionIntentX = cam.right;
directionIntentX.y = 0;
directionIntentX.Normalize();
directionIntentY = cam.forward;
directionIntentY.y = 0;
directionIntentY.Normalize();
rb.velocity = directionIntentY * Input.GetAxis("Vertical") * speed + directionIntentX * Input.GetAxis("Horizontal") * speed + Vector3.up * rb.velocity.y;
rb.velocity = Vector3.ClampMagnitude(rb.velocity, maxSpeed);
if (Input.GetKey(KeyCode.LeftShift))
{
speed = runSpeed;
}
if (!Input.GetKey(KeyCode.LeftShift))
{
speed = walkSpeed;
}
GroundCheck();
}
or litteraly copy and paste the code within your movement method.

I have a Unity game and I want my player to move relative to the camera

Here's my code. Currently, the player moves forwards relative to a fix plane. Rotating the player/camera has no affect on which direction they travel when I press the "go forward" key.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class MainController : MonoBehaviour
{
public float speed;
float jumpSpeed = 0.5f;
bool isGrounded;
private Rigidbody rb;
public GameObject player;
// Start is called before the first frame update
void Start()
{
rb = GetComponent<Rigidbody>();
}
// Update is called once per frame
void Update()
{
}
void FixedUpdate()
{
float moveHorizontal = Input.GetAxis("Horizontal");
float moveVertical = Input.GetAxis("Vertical");
Vector3 movement = new Vector3(moveHorizontal, 0.0f, moveVertical);
if (Input.GetButtonDown("Jump") || Input.GetAxis("Right Trigger") > 0f && isGrounded)
{
rb.AddForce(Vector3.up * jumpSpeed, ForceMode.Impulse);
isGrounded = false;
}
if (isGrounded)
{
rb.AddForce(movement * speed * Time.deltaTime);
}
else
{
rb.AddForce((movement/4) * speed * Time.deltaTime);
}
}
void OnCollisionStay()
{
isGrounded = true;
}
void OnCollisionExit()
{
isGrounded = false;
}
}
How do I make it so that the player moves relative to the camera's direction?

It's because RigidBody.AddForce() adds force in absolute direction, no matter which direction the gameobject is looking.
You should try using RigidBody.AddRelativeForce(), like:
if (isGrounded)
{
rb.AddRelativeForce(movement * speed * Time.deltaTime);
}

I think there is a better way to do this, but see if it results in the expected behavior:
void FixedUpdate()
{
float moveHorizontal = Input.GetAxis("Horizontal");
float moveVertical = Input.GetAxis("Vertical");
Vector3 looking = (transform.rotation * Vector3.forward).normalized;
Vector3 perpendicular = Vector2.Perpendicular(new Vector2(looking.x, looking.z));
perpendicular.z = perpendicular.y;
perpendicular.y = looking.y;
Vector3 vertical = moveVertical * looking;
Vector3 horizontal = moveHorizontal * perpendicular;
Vector3 movement = vertical - horizontal;
...
}

Issues Getting my GameObject to both Move Forward and Jump properly

I'm having an issue where my gameObject barely jumps at all. I think it has something to do with moveDirection because the jumping works when I comment out p.velocity = moveDirection.
Any suggestions on how to fix this?
using UnityEngine;
using System.Collections;
public class Controller : MonoBehaviour
{
public float jumpHeight = 8f;
public Rigidbody p;
public float speed = 1;
public float runSpeed = 3;
public Vector3 moveDirection = Vector3.zero;
// Use this for initialization
void Start ()
{
p = GetComponent<Rigidbody>();
p.velocity = Vector3.zero;
}
// Update is called once per frame
void Update ()
{
if (Input.GetKeyDown (KeyCode.Space))
{
p.AddForce(new Vector3(0, jumpHeight, 0), ForceMode.Impulse);
}
Move ();
}
void Move ()
{
if(Input.GetKey(KeyCode.D))
{
transform.Rotate(Vector3.up, Mathf.Clamp(180f * Time.deltaTime, 0f, 360f));
}
if(Input.GetKey(KeyCode.A))
{
transform.Rotate(Vector3.up, -Mathf.Clamp(180f * Time.deltaTime, 0f, 360f));
}
moveDirection = new Vector3(Input.GetAxis("Horizontal"),0,Input.GetAxis("Vertical"));
moveDirection = transform.TransformDirection(moveDirection);
if(Input.GetKey(KeyCode.LeftShift))
{
moveDirection *= runSpeed;
}
else
{
moveDirection *= speed;
}
p.velocity = moveDirection;
}
}

Try using a much higher value for your jumpheight variable. I usually go with something in the hundreds.

Because right after doing the AddForce(...) literally within the same frame you override the velocity with moveDirection. You should be adding to the current velocity, instead of overriding it entirely as such:
Vector3 velocity = p.velocity;
p.velocity = velocity + moveDirection;
This is exactly why Unity warns against messing with velocity directly, youd be better off just doing another AddForce(...) for your movement:
p.AddForce(moveDirection * Time.deltaTime);
EDIT:
i don't like digressing too far from the OP's question, but your new problems are probably because you are doing too much with moveDirection half of what i don't even understand why but it should for the most part look like this:
moveDirection = new Vector3(Input.GetAxis("Horizontal"),0,Input.GetAxis("Vertical")).normalized;
float _speed = Input.GetKey(KeyCode.LeftShift) ? runspeed : speed;
p.AddForce(moveDirection * _speed * Time.deltaTime);

Okay I figured out how to fix it. Instead of those MoveDirection variables I changed it to
if(Input.GetKey(KeyCode.W)) {
transform.position += transform.forward * Time.deltaTime * speed;
}
if(Input.GetKey(KeyCode.S)) {
transform.position -= transform.forward * Time.deltaTime * speed;
}
and now it works just fine.

SetFloat for animator not working

The function SetFloat() does not recognize the speed when my character moves in the x axis, but still recognizes the y axis.
I don't understand why the player´s x velocity is not signed to the "Speed" float created in the animator
public float acceleration;
public bool isGrounded = true;
public float jumpHeight;
Animator anim;
// Use this for initialization
void Start () {
anim = GetComponent<Animator>();
}
// Update is called once per frame
void Update () {
if(Input.GetKey(KeyCode.Space) && isGrounded == true){
GetComponent<Rigidbody2D>().velocity = new Vector2 (0 , jumpHeight);
isGrounded = false;
}
if(GetComponent<Rigidbody2D>().velocity.y == 0){
isGrounded = true;
}
anim.SetFloat("Speed", Mathf.Abs(GetComponent<Rigidbody2D>().velocity.x));
if(Input.GetKey(KeyCode.D)){
transform.position += new Vector3 (acceleration * Time.deltaTime , 0.0f, 0.0f);
transform.localScale = new Vector3 (5,5,5);
}
if(Input.GetKey (KeyCode.A)){
transform.localScale = new Vector3 (-5,5,5);
transform.position -= new Vector3 (acceleration * Time.deltaTime , 0.0f , 0.0f);
}
}

I don't know if this question is still relevant but, if you want to set a float in the animator, you can't use transform.position. transform.position doesn't change any Rigidbody values, in order to do that you would want to move the Rigidbody using rigidbody.MovePosition or rigidbody.AddForce.
I suggest using rigidbody.MovePosition because you don't have to write much code.
The way i do it is i don't use Input.GetKey because it's quite sloppy and doesn't work as well as Input.GetAxis:
function Update()
{
float keyboardX = Input.GetAxis("Horizontal") * acceleration * Time.deltaTime;
rigid.MovePosition(keyboardX);
anim.SetFloat("Speed", Mathf.Abs(GetComponent<Rigidbody2D>().velocity.x));
}
This should work. Again, i'm not sure how relevant this is.