How To Code Ledge Grabbing for your Unity Game 

Found you!

@@rxmfdddddddd ?

@@fear-the-phantom I follow you on twitter :D

Seems like you’re setting gravity to true when your character is hanging, it should be set to false and then back to true when the hanging stops

@@thegamedevcave im kinda lost :'C can you help me, please? this is my full code public class RbController : MonoBehaviour { [SerializeField] private Rigidbody _rb; [SerializeField] private Camera _camera; [SerializeField] private float _rotation; [SerializeField] float Jump = 5f; public float movementSpeed; public float raycastDistance = 0.2f; public float swingDamping = 0.95f; public bool isJump = false; public bool isGrounded = false; public bool hanging; bool canMove = true; public Transform currentAnchor; private bool isAtach; private SpringJoint _springJoint; public LayerMask groundLayer; // Start is called before the first frame update void Start() { _rb = GetComponent(); } // Update is called once per frame void Update() { PlayerMovement(); PlayerJump(); Anclar(); LedgeGrab(); RaycastHit hit; if (Physics.Raycast(transform.position, Vector3.down, out hit, raycastDistance, groundLayer)) { isGrounded = true; } else { isGrounded = false; } if (isAtach) { ApplySwingDamping(); } } private void PlayerMovement() { if (canMove) { float Hor = Input.GetAxis("Horizontal"); float Ver = Input.GetAxis("Vertical"); Vector3 velocity = Vector3.zero; Vector3 direction = Quaternion.Euler(0, _camera.transform.eulerAngles.y, 0) * new Vector3(Hor, 0, Ver); Vector3 movementDirection = direction.normalized; if (Hor != 0 || Ver != 0) { velocity = direction * movementSpeed; if (movementDirection != Vector3.zero) { Quaternion desiredRotation = Quaternion.LookRotation(movementDirection, Vector3.up); transform.rotation = Quaternion.Slerp(transform.rotation, desiredRotation, _rotation * Time.deltaTime); } } velocity.y = _rb.velocity.y; _rb.velocity = velocity; } } IEnumerator EnableCanMove(float waitTime) { yield return new WaitForSeconds(waitTime); canMove = true; } private void PlayerJump() { if (Input.GetButtonDown("Jump") && isGrounded) { if(hanging) { _rb.useGravity = true; hanging = false; _rb.AddForce(Vector3.up * Jump, ForceMode.Impulse); StartCoroutine(EnableCanMove(0.25f)); } else { _rb.AddForce(Vector3.up * Jump, ForceMode.Impulse); } } } void Anclar() { if (Input.GetButtonDown("Sujetarse") && currentAnchor != null) { isAtach = true; _rb.useGravity = false; _springJoint = gameObject.AddComponent(); _springJoint.connectedBody = currentAnchor.GetComponent(); _springJoint.autoConfigureConnectedAnchor = false; _springJoint.connectedAnchor = new Vector3(0f, -7f, 0f); _springJoint.spring = 40.5f; _springJoint.damper = 10f; _springJoint.massScale = 2f; } else if (Input.GetButtonDown("Sujetarse") && isAtach) { isAtach = false; //_rb.useGravity = true; Destroy(_springJoint); } } void ApplySwingDamping() { _rb.velocity *= swingDamping; } void LedgeGrab() { if (_rb.velocity.y < 0 && !hanging) { RaycastHit downhit; Vector3 lineDownStart = (transform.position + Vector3.up * 1.5f) + transform.forward; Vector3 lineDownEnd = (transform.position + Vector3.up * 0.7f) + transform.forward; Physics.Linecast(lineDownStart,lineDownEnd,out downhit, LayerMask.GetMask("Ground")); Debug.DrawLine(lineDownStart,lineDownEnd); if(downhit.collider != null) { RaycastHit forwardHit; Vector3 lineForwardStart = new Vector3 (transform.position.x, downhit.point.y-0.1f,transform.position.z); Vector3 lineForwardEnd = new Vector3 (transform.position.x, downhit.point.y-0.1f, transform.position.z) + transform.forward; Physics.Linecast(lineForwardStart, lineForwardEnd, out forwardHit, LayerMask.GetMask("Ground")); Debug.DrawLine(lineForwardStart, lineForwardEnd); if (forwardHit.collider != null) { _rb.useGravity = false; _rb.velocity = Vector3.zero; hanging = true; Vector3 hangPos = new Vector3(forwardHit.point.x, downhit.point.y, forwardHit.point.z); Vector3 offset = transform.forward * -0.1f + transform.up * -1f; hangPos += offset; transform.position = hangPos; transform.forward = -forwardHit.normal; canMove = false; } } } } }

you're likely typing vector3 instead of Vector3.

@@thegamedevcave Im not its just not working

@@RacTeamGames if you're having trouble with the basics like adding a variable I suggest you first take a step back and go through some of my unity basics videos ru-vid.com/group/PLoReGgpfex3xS-zXTujxo_flRkLBgxxd3

i'm thinking it might be this line lineFwdEnd = new Vector3(transform.position.x + downHit.point.y - 0.1f, transform.position.z) + transform.forward; you're adding transform.forward to it, which is correct but now your line cast is only casting a really short distance in front of the character, just 1 single unit. you want to probably muliply that transform.forward by some number (i'd suggest making it a variable to test out what number works best)

@@thegamedevcave Thank you the player is starting to react! to the hanging but is off and sometimes will be hanging about the wall haha. I also saw i had an error in my code i had: lineFwdEnd = new Vector3(transform.position.x + downHit.point.y - 0.1f, transform.position.z) + transform.forward; istead of: lineFwdEnd = new Vector3(transform.position.x, downHit.point.y - 0.1f, transform.position.z) + transform.forward; 🤦‍♂😂

@@TheDigitalLenny try do this in the last part of de function: if (fwdHit.collider != null) { Invoke(nameof(NewPosHang), 0.01f); } } } } public void NewPosHang() { rb.useGravity = false; rb.velocity = Vector3.zero; hanging = true; Vector3 hangPos = new Vector3(fwdHit.point.x, downHit.point.y, fwdHit.point.z); Vector3 offset = transform.forward * -0.1f + transform.up * -1f; hangPos += offset; transform.position = hangPos; transform.forward = -fwdHit.normal; }

Should be yeah, might need a 2d specific verion of line cast for it though, not sure