Sonic the Hedgehog Loop Physics Problem

Unity Engine
1

My issue is Sonic the Hedgehog loop physics, he runs along my path nicely then runs a bit up the loop then just stops and runs in place at that position. He won’t run through the loop as I’d like.

I am unfortunately unclear at the cause of this problem:
gravity, not enough speed or both

I have tried to solve all of these issues for the last 8 days, nothing has worked so far. I’m hoping your expertise will help. I am working with Unity 2D.

Thank you for the help!!!

2

I think it is probably you’re not moving sonic physically using rigidbody2D? if you’re setting velocity and not using addforce, it won’t work.

3

Thank you for the reply, how would I go about moving Sonic with the Rigidbody2D? I ask because I thought I was already doing that, but must not have been.
Thanks.

Here’s my Script.

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

public class MoveSonic : MonoBehaviour
{
private Rigidbody2D myRigidbody;

private Animator myAnimator;

[SerializeField]
private float movementSpeed;

private bool attack;

private bool facingRight;

[SerializeField]
private Transform[ ] groundPoints;

[SerializeField]
private float groundRadius;

[SerializeField]
private LayerMask whatIsGround;

private bool isGrounded;

private bool jump;

[SerializeField]
private bool airControl;

[SerializeField]
private float jumpForce;

public float jumpPower;

private float moveDirection;

private void Awake()
{
myRigidbody = GetComponent();
}
// Start is called before the first frame update
void Start()
{
facingRight = true;
myRigidbody = GetComponent();
myAnimator = GetComponent();

}

void Update()
{
HandleInput();

}

// Update is called once per frame
void FixedUpdate()
{
float horizontal = Input.GetAxis(“Horizontal”);

isGrounded = IsGrounded();

HandleMovement(horizontal);

Flip(horizontal);

HandleAttacks();

ResetValues();

}

private void HandleMovement(float horizontal)
{

if (!this.myAnimator.GetCurrentAnimatorStateInfo(0).IsTag(“SpinDash”) && (isGrounded || airControl))
{
myRigidbody.velocity = new Vector2(horizontal * movementSpeed, myRigidbody.velocity.y);
}
if (isGrounded && jump)
{
isGrounded = false;
myRigidbody.AddForce(new Vector2(0, jumpForce));
myAnimator.SetTrigger(“jump”);
}

myAnimator.SetFloat(“speed”, Mathf.Abs(horizontal));
moveDirection = Input.GetAxis(“Horizontal”);
myRigidbody.AddForce(transform.right);

myRigidbody.velocity = new Vector2(moveDirection * movementSpeed, myRigidbody.velocity.y);
}

private void HandleAttacks()
{
if (attack && !this.myAnimator.GetCurrentAnimatorStateInfo(0).IsTag(“SonicJumpDash”))
{
myAnimator.SetTrigger(“spin attack”);
myRigidbody.velocity = Vector2.zero;
}
}

private void HandleInput()
{
if (Input.GetKeyDown(KeyCode.LeftShift))
{
myRigidbody.velocity = new Vector2(myRigidbody.velocity.x, jumpPower);

}
if (Input.GetKeyDown(KeyCode.RightShift))
{
attack = true;

}
}

private void Flip(float horizontal)
{
if (horizontal > 0 && !facingRight || horizontal < 0 && facingRight)
{
facingRight = !facingRight;

Vector3 theScale = transform.localScale;

theScale.x *= -1;

transform.localScale = theScale;
}

}

private void ResetValues()
{
attack = false;
jump = false;

}

private bool IsGrounded()
{
if (myRigidbody.velocity.y <= 0)
{
foreach (Transform point in groundPoints)
{
Collider2D[ ] colliders = Physics2D.OverlapCircleAll(point.position, groundRadius, whatIsGround);

for (int i = 0; i < colliders.Length; i++)
{
if (colliders*.gameObject != gameObject)*
{
myAnimator.ResetTrigger(“jump”);
return true;
}
}
}
}
return false;

}
}