Adding jumping to the roll-a-ball tutorial.

Hello, I would like to add jumping to the roll a ball tutorial. I have decided to expand on the game, and jumping is what I want to do next.

Code (CSharp):

1. void FixedUpdate ()
2.     {
3.         float moveHorizontal = Input.GetAxis ("Horizontal");
4.         float moveVertical = Input.GetAxis ("Vertical");
5.  
6.         Vector3 movement = new Vector3 (moveHorizontal, 0, moveVertical);
7.  
8.         rb.AddForce (movement * speed);
9.    
10.  

How would I add jumping to this?

 

Add an if statement to check for whatever key you want to use as the jump & add an impulse force vector3.up*[whatever jump force you want]

You will probably need a large jump force to get it to show, maybe start with a force of 5000 to see how it goes. You will also want to include a check that the ball is grounded in your if statement otherwise it will jump every time you press the jump key even if the ball is in midair.

 

Code (CSharp):

1.     if (other.gameObject.CompareTag("Ground"))
2.     {
3.       grounded = true;
4.     }
5.     else
6.     {
7.       grounded = false;
8.     }

I have done this to check for grounded yet it does not work. I am working on the jump now​

 

Where are you doing that check? In OnCollisionStay ?

 

I was actually doing it on OnTriggerEnter, similar to the pickups. I'll try that now, thanks for putting up with me

 

Code (CSharp):

1.       void OnCollisionStay(Collision other)
2.       {
3.           if (other.gameObject.CompareTag("Ground"))
4.           {
5.               grounded = true;
6.           }
7.       }
8.  
9.       void OnCollisionExit(Collision other)
10.       {
11.           if(other.gameObject.CompareTag("Ground"))
12.           {
13.               grounded = false;
14.           }
15.       }

This isn't working, it says its always grounded

 

Its the collision exit code, it doesn't run it (Checked with print in console)

 

Thats because you are checking for a floor collision when you are no longer touching the floor!
Try just removing the if check and just setting grounded to false on collision exit.

 

I ended up just doing it with Raycasting, I'll post the code I use

Code (CSharp):

1.  
2.         if (Input.GetKeyDown("space"))
3.         {
4.             RaycastHit hit;
5.             if(Physics.Raycast(transform.position,-Vector3.up, out hit, 0.5f))
6.             {
7.                 grounded = true;
8.             }
9.             else
10.             {
11.                 Debug.Log("Nothing Below");
12.                 grounded = false;
13.             }
14.  
15.             if (grounded == true)
16.             {
17.                 rb.AddForce(Vector3.up * jumpForce, ForceMode.Impulse);
18.                 jump.Play();