Two example gifs here: Imgur: The magic of the Internet
There are two sprites in the gifs. The above sprite is enlarged and is only moving back and forth. The smaller sprite is the player sprite and is controlled via a slightly modified 2D Kinematic Platformer Controller which I made following the Unity tutorial for making a kinematic platformer controller: 2D Platformer Character Controller - Introduction and Session Goals [1/8] Live 2017/2/22 - YouTube
Here are the scripts used for the player:
Physics Object Script:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class PhysicsObject : MonoBehaviour
{
[Header("Custom Physics Variables")]
//0.65 is about a 50 degree angle on rotated object
public float minGroundAngleY = 0.65f;
public float gravityModifier = 1f;
public Vector2 gravity = new Vector2(0, -9.8f);
[Tooltip("Jump decay when going up")]
public float jumpDecay = 0.2f;
[Tooltip("Jump decay when player reaches apex and starts to fall")]
public float jumpApexDecay = 0.3f;
protected Vector2 targetVelocity;
protected bool grounded;
protected Vector2 groundNormal;
protected Rigidbody2D rb;
protected Vector2 velocity;
protected ContactFilter2D contactFilter;
protected RaycastHit2D[] hitBuffer = new RaycastHit2D[16];
protected List<RaycastHit2D> hitBufferList = new List<RaycastHit2D>(16);
protected const float minCheckColDist = 0.001f;
protected const float shellRadius = 0.01f;
private void OnEnable()
{
rb = GetComponent<Rigidbody2D>();
}
private void Start()
{
contactFilter.useTriggers = false;
contactFilter.SetLayerMask(Physics2D.GetLayerCollisionMask(gameObject.layer));
contactFilter.useLayerMask = true;
}
private void Update()
{
targetVelocity = Vector2.zero;
ComputeVelocity();
}
protected virtual void ComputeVelocity()
{
}
private void FixedUpdate()
{
MovementPrep();
}
private void MovementPrep()
{
velocity += gravityModifier * gravity * Time.deltaTime;
velocity.x = targetVelocity.x;
if (velocity.y > 0)
{
velocity.y -= jumpDecay * Time.deltaTime;
}
else if (velocity.y < 0)
{
velocity.y -= jumpApexDecay * Time.deltaTime;
}
grounded = false;
Vector2 moveAlongGround = new Vector2(groundNormal.y, -groundNormal.x);
Vector2 move = moveAlongGround * velocity.x * Time.deltaTime;
Movement(move, false);
move = Vector2.up * velocity.y * Time.deltaTime;
Movement(move, true);
}
private void Movement(Vector2 move, bool yMovement)
{
float colMoveDist = move.magnitude;
if (colMoveDist > minCheckColDist)
{
int count = rb.Cast(move, contactFilter, hitBuffer, colMoveDist + shellRadius);
hitBufferList.Clear();
for (int i = 0; i < count; i++)
{
hitBufferList.Add(hitBuffer*);*
}
for (int i = 0; i < hitBufferList.Count; i++)
{
Vector2 currentNormal = hitBufferList*.normal;*
if (currentNormal.y > minGroundAngleY)
{
grounded = true;
if (yMovement)
{
groundNormal = currentNormal;
currentNormal.x = 0;
}
}
float projection = Vector2.Dot(velocity, currentNormal);
if (projection < 0)
{
velocity = velocity - projection * currentNormal;
}
float modifiedDistance = hitBufferList*.distance - shellRadius;*
colMoveDist = modifiedDistance < colMoveDist ? modifiedDistance : colMoveDist;
}
}
rb.position = rb.position + move.normalized * colMoveDist;
}
}
PlayerController Script
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class PlayerController : PhysicsObject
{
[Header(“Player Variables”)]
public float speed = 7f;
public float jumpPower = 10f;
private SpriteRenderer spriteRender;
private Animator animator;
private void Awake()
{
spriteRender = transform.GetChild(0).GetComponent();
animator = transform.GetChild(0).GetComponent();
}
protected override void ComputeVelocity()
{
Vector2 move = Vector2.zero;
if (!GameManager.instance.InShop)
{
move.x = Input.GetAxis(“Horizontal”);
if (Input.GetButtonDown(“Jump”) && grounded)
{
velocity.y = jumpPower;
}
else if (Input.GetButtonUp(“Jump”))
{
if (velocity.y > 0)
velocity.y *= 0.5f;
}
}
targetVelocity = move * speed;
if (Mathf.Abs(targetVelocity.x) > 0)
animator.SetBool(“moving”, true);
else
animator.SetBool(“moving”, false);
//If moving right
if (move.x > 0)
{
if (!spriteRender.flipX)
spriteRender.flipX = true;
}
//If moving left
else if (move.x < 0)
{
if (spriteRender.flipX)
spriteRender.flipX = false;
}
}
}
And here is the test script I made for the larger sprite:
Test Script
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Test : MonoBehaviour
{
public float speed;
private Rigidbody2D rb;
private bool moveRight;
private void Awake()
{
rb = GetComponent();
moveRight = true;
}
private void FixedUpdate()
{
MoveRBObject();
}
private void MoveRBObject()
{
if (moveRight)
rb.position = rb.position + (Vector2.right * speed * Time.deltaTime);
else
rb.position = rb.position + (Vector2.left * speed * Time.deltaTime);
if (rb.position.x > 6)
moveRight = false;
else if (rb.position.x < -6)
moveRight = true;
}
}
I’ve searched for a solution to fix the vibrating and have tried about a half a dozen different solutions but nothing seemed to have changed the vibrating in any significant way. A few things I have tried:
- Changed rb.position to rb.MovePosition() and set the Rigidbody interpolation to “Interpolate” and “Extrapolate”
- Made a very simple “pixel perfect” movement script which just changed the player sprite position on LateUpdate() to be to the nearest pixel position
- Attempted having the movement code be in Update() as opposed to FixedUpdate()
- Tried implementing the scripts from this post I found on movement in Unity: Timesteps and Achieving Smooth Motion in Unity — KinematicSoup Technologies Inc. (Not sure if I implemented them correctly or not though. They didn’t seem to change anything)
- Updated my graphics card drivers
I would be very grateful for any tips or suggestions on how to fix this. Please let me know if you need more information to help solve the problem.
Thanks!