Weird stuttering effect when my player object hits a wall

Questions & Answers
1

Hi,

I’m working on building the movement system for a top down view 2D base defense game, I’ve built a very basic prototype which is pretty much just a blue circle that can be moved via changing velocity using WASD and a wall to test movement and colliders. I’ve got a couple of issues that i can’t seem to solve:

  1. The player object keeps moving half into the wall when the button is held down, and used to go all the way through sometimes before I applied a fix to stop it. (This fix doesn’t work perfectly, however - see problem 2)

  2. I applied a fix to stop the player object going through the wall by using an overlapCircle transform to tell when it was touching a wall and stop it moving when it was, but I get this weird stuttering effect when I try and move my object into the wall.

My player object has a circle collider which supposedly covers the whole sprite, and the rigidbody2d component is set to interpolate and has continuous collision detection, same as the wall. Is there any way I can make it just stop moving when it hits the wall? I’ve included the code for my player’s movement below.

using UnityEngine;
using System.Collections;

public class SpriteMovementScript : MonoBehaviour
{

    public float maxSpeed = 5;
    bool wallCollision;
    public Transform wallCheck;
    float wallRadius = 1;
    float speedRecord;
    public LayerMask whatIsWall;

    // Use this for initialization
    void Start()
    {
      
    }

    // Update is called once per frame
    void FixedUpdate()
    {
        
        wallCollision = Physics2D.OverlapCircle(wallCheck.position, wallRadius, whatIsWall);
        if (wallCollision == true)
        {
            maxSpeed = 0;
        } else
        {
            maxSpeed = 5;
        }
        



        float h = Input.GetAxis("Horizontal");
        float v = Input.GetAxis("Vertical");
        GetComponent<Rigidbody2D>().velocity = new Vector2(maxSpeed * h, maxSpeed * v);

        
    }
}
2

Think I’ve managed to solve the problem - turns out that a script I’d put on the wall to stop it moving when the user pushed into it, which I didn’t think was related at the time of making the post, had been the cause. I disabled it and removed the rigidbody2D from the wall instead, and it seems to be working now. Thanks for the answers, there’s some stuff in here I can make use of later!