koobas.hobune.stream
Jump Script Not working (3D)
I've been trying to get this C# jumping script to work, but I can't. The script was originally for a 2D game, but the only thing I changed was turning 2D Rigidbodies into 3D ones and replacing the Overlapcircle used for checking if the player is grounded with a sphere. The compiler and the engine both say the script is alright, but when I press the jump key, nothing happens.
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Diagnostics;
using System.Security.Cryptography;
using UnityEngine;
public class PlayerJump : MonoBehaviour
{
public float jumpForce;
private bool isGrounded;
public Transform feetPos;
public float checkRadius;
public LayerMask whatIsGround;
private Rigidbody rb;
// Update is called once per frame
void Update()
{
isGrounded = Physics.OverlapSphere(feetPos.position, checkRadius, whatIsGround).Length > 0;
if (isGrounded == true && Input.GetKeyDown(KeyCode.Space));
{
UnityEngine.Debug.Log("jump");
rb.velocity = Vector3.up * jumpForce;
}
}
}
Thanks in advance :)
I looked through your code and it seems you need to make sure you get ahold of the rigidbody. and you need to make sure that you 'checkRadius' is sufficient. I have refactored your code, perhaps it can help you understand it a bit better.
Also, it is not necessary to be checking for grounded all the time, only when you need it, so I made property for it.
I have furthermore added an OnDrawGizmos so that you can see if your check radius is enough to actually check for the ground.
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Diagnostics;
using System.Security.Cryptography;
using UnityEngine;
// make sure this GameObject has a rigidbody as it is necessary for this script to work
[RequireComponent(typeof(Rigidbody))]
public class UnityAnswers : MonoBehaviour
{
[SerializeField] float jumpForce;
[SerializeField] Transform feetPos;
[SerializeField] float checkRadius;
[SerializeField] LayerMask whatIsGround;
private Rigidbody rb;
public bool IsGrounded
{
get { return (Physics.OverlapSphere(feetPos.position, checkRadius, whatIsGround).Length > 0); }
}
private void Start()
{
rb = GetComponent<Rigidbody>(); // we know this will always work because at the top we have required this component
}
void Update()
{
if (Input.GetKeyDown(KeyCode.Space))
{
if(IsGrounded)
rb.velocity = Vector3.up * jumpForce;
}
}
private void OnDrawGizmos()
{
Gizmos.DrawWireSphere(feetPos.position, checkRadius);
}
}
Hey there , if anyone has the same problem. Try to change the layer to "Ground". Once I made a prototype everything was working fine. Then I changed my assets with new models and didn't set the layer as Ground.
