Question Error CS8641

Hello guys, I'm trying to make a movement script that implements double jump. I'm following along with a youtube tutorial and I did everything exactly as the guy did in the video (I think). I keep getting Error CS8641 when I try using "else if". Please I need help. I'm tired.

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class DoubleJump : MonoBehaviour
6. {
7.    public float speed = 10f;
8.    public float jumpPower = 20f;
9.    public int extraJumps = 1;
10.    [SerializeField] LayerMask groundLayer;
11.    [SerializeField] Rigidbody2D rb;
12.    [SerializeField] Transform feet;
13.  
14.    int jumpCount = 0;
15.    bool isGrounded;
16.    float mx;
17.    float jumpCoolDown;
18.  
19.    private void Update()
20.    {
21.        mx = Input.GetAxisRaw("Horizontal");
22.  
23.        if (Input.GetButtonDown("Jump"))
24.        {
25.            Jump();
26.        }
27.  
28.        CheckGrounded();
29.    }
30.  
31.    private void FixedUpdate()
32.    {
33.        rb.velocity = new Vector2(mx * speed, rb.velocity.y);
34.    }
35.  
36.    void Jump()
37.    {
38.        if (isGrounded || jumpCount < extraJumps)
39.        rb.velocity = new Vector2(rb.velocity.x, jumpPower);
40.        jumpCount++;
41.    }
42.  
43.    void CheckGrounded()
44.    {
45.        if (Physics2D.OverlapCircle(feet.position, 0.5f, groundLayer));
46.        {
47.            isGrounded = true;
48.            jumpCount = 0;
49.            jumpCoolDown = Time.time + 0.2f;
50.        }
51.        else if (Time.time < jumpCoolDown)
52.        {
53.            isGrounded = true;
54.        }
55.        else
56.        {
57.            isGrounded = false;
58.        }
59.    }
60. }

 

Code (CSharp):

1. if (Physics2D.OverlapCircle(feet.position,
2.  0.5f, groundLayer)); // <-- remove the
3.  //semi colon
4.        {
5.            isGrounded = true;
6.            jumpCount = 0;
7.            jumpCoolDown = Time.time + 0.2f;
8.        }

 

Thank you very much!

 

This is just fat-finger typing. Remember: NOBODY memorizes error codes. The error code is absolutely the least useful part of the error. It serves no purpose at all. Forget the error code. Put it out of your mind.

The complete error message contains everything you need to know to fix the error yourself.

Always start with the FIRST error in the console window, as sometimes that error causes or compounds some or all of the subsequent errors.

The important parts of the error message are:

- the description of the error itself (google this; you are NEVER the first one!)
- the file it occurred in (critical!)
- the line number and character position (the two numbers in parentheses)
- also possibly useful is the stack trace (all the lines of text in the lower console window)

All of that information is in the actual error message and you must pay attention to it. Learn how to identify it instantly so you don't have to stop your progress and fiddle around with the forum.

In the future, I would not recommend doing tutorials tired, because you are wasting your time. Instead, try this approach:

How to do tutorials properly:

Tutorials are a GREAT idea. Tutorials should be used this way:

Step 1. Follow the tutorial and do every single step of the tutorial 100% precisely the way it is shown. Even the slightest deviation (even a single character!) generally ends in disaster. That's how software engineering works. Every single letter must be spelled, capitalized, punctuated and spaced (or not spaced) properly. Fortunately this is the easiest part to get right. Be a robot. Don't make any mistakes. BE PERFECT IN EVERYTHING YOU DO HERE.

If you get any errors, learn how to read the error code and fix it. Google is your friend here. Do NOT continue until you fix the error. The error will probably be somewhere near the parenthesis numbers (line and character position) in the file. It is almost CERTAINLY your typo causing the error, so look again and fix it.

Step 2. Go back and work through every part of the tutorial again, and this time explain it to your doggie. See how I am doing that in my avatar picture? If you have no dog, explain it to your house plant. If you are unable to explain any part of it, STOP. DO NOT PROCEED. Now go learn how that part works. Read the documentation on the functions involved. Go back to the tutorial and try to figure out WHY they did that. This is the part that takes a LOT of time when you are new. It might take days or weeks to work through a single 5-minute tutorial. Stick with it. You will learn.

Step 2 is the part everybody seems to miss. Without Step 2 you are simply a code-typing monkey and outside of the specific tutorial you did, you will be completely lost.

Of course, all this presupposes no errors in the tutorial. For certain tutorial makers (like Unity, Brackeys, Imphenzia, Sebastian Lague) this is usually the case. For some other less-well-known content creators, this is less true. Read the comments on the video: did anyone have issues like you did? If there's an error, you will NEVER be the first guy to find it.

Beyond that, Step 3, 4, 5 and 6 become easy because you already understand!