Marble Game jump problem.

Unity Engine
1

When i jump my marble disappears, and a lot of errors pop up. Really need help.:frowning:

First - Add this script to a sphere.
Second - Change its mass to 0.1
Third - Play the game and press Space Bar.

var speed = 300.0; 
var gravity = -5; 
var canJump = true;
var jumpHeight = 2.0;
private var grounded = false;

 function FixedUpdate() { 
 rigidbody.AddForce (Vector3(0, gravity, 0)); 
  
 var cameraTransform = Camera.main.transform; 

   // Forward vector relative to the camera along the x-z plane    
   var forward = cameraTransform.TransformDirection(Vector3.forward); 
   forward.y = 0; 
   forward = forward.normalized; 

   // Right vector relative to the camera 
   // Always orthogonal to the forward vector 
   var right = Vector3(forward.z, 0, -forward.x); 

  
 if (Input.GetKey ("w")) { 
   rigidbody.AddForce(forward * speed * Time.deltaTime); 
   } 

if (Input.GetKey("s")) { 
   rigidbody.AddForce(forward * -speed * Time.deltaTime); 
   } 
    
if (Input.GetKey ("d")) { 
rigidbody.AddForce(right * speed * Time.deltaTime); 
} 

if (Input.GetKey ("a")) { 
rigidbody.AddForce(right * -speed * Time.deltaTime); 
 } 
 
 
 if (grounded)
    {
	
	var velocity = rigidbody.velocity;
	
	if (canJump  Input.GetButton("Jump"))
        {
            rigidbody.velocity = Vector3(velocity.x, CalculateJumpVerticalSpeed(), velocity.z);
        }
    }
 
 
   // We apply gravity manually for more tuning control
    rigidbody.AddForce(Vector3 (0, -gravity * rigidbody.mass, 0));
    
    grounded = false;
 
 
}

 
 
 function OnCollisionStay ()
{
    grounded = true;    
}


function CalculateJumpVerticalSpeed ()
{
    return Mathf.Sqrt(2 * jumpHeight * gravity);
}
2

What errors get returned?

3

There are way too many errors for me to write, so it would be much easier if you test it yourself. :wink:

4

So i changed AddForce to AddTorque for more of a realistic look but now it moves really slow. No matter what the speed is (1 or 1000) it still moves the same speed. Whats wrong ?
(I still have the jumping problem)

var speed = 300.0; 
var gravity = -5; 
var canJump = true;
var jumpHeight = 2.0;
private var grounded = false;


 function FixedUpdate() { 
 rigidbody.AddForce (Vector3(0, gravity, 0)); 
  
 var cameraTransform = Camera.main.transform; 

   // Forward vector relative to the camera along the x-z plane    
   var forward = cameraTransform.TransformDirection(Vector3.forward); 
   forward.y = 0; 
   forward = forward.normalized; 

   // Right vector relative to the camera 
   // Always orthogonal to the forward vector 
   var right = Vector3(forward.z, 0, -forward.x); 

  
 if (Input.GetKey ("w")) { 
   rigidbody.AddTorque(right * speed * Time.deltaTime); 
   
   } 

if (Input.GetKey("s")) { 
   rigidbody.AddTorque(right * -speed * Time.deltaTime); 
   } 
    
if (Input.GetKey ("d")) { 
rigidbody.AddTorque(forward * -speed * Time.deltaTime); 
} 

if (Input.GetKey ("a")) { 
rigidbody.AddTorque(forward * speed * Time.deltaTime); 
 } 
 
 
 if (grounded)
    {
	
	var velocity = rigidbody.velocity;
	
	if (canJump  Input.GetButton("Jump"))
        {
            rigidbody.velocity = Vector3(velocity.x, CalculateJumpVerticalSpeed(), velocity.z);
        }
    }
 
 
   // We apply gravity manually for more tuning control
    rigidbody.AddForce(Vector3 (0, gravity * rigidbody.mass, 0));
    
    grounded = false;
 
 
}

 
 
 function OnCollisionStay ()
{
    grounded = true;    
}


function CalculateJumpVerticalSpeed ()
{
    // From the jump height and gravity we deduce the upwards speed 
    // for the character to reach at the apex.
    return Mathf.Sqrt(2 * jumpHeight * gravity);
}
 
[quote][/quote]
5

AddTorque is already on a per second basis I believe, so you don’t have to multiply by Time.deltaTime.

And I would recommend using Input.GetAxis() instead of Input.GetKey() for simplicity.

6

Ok, so i got the jumping problem sorted out but i still cant figure our how to get the AddTorque to rotate faster. Its making me MAD :x !!!

var speed = 300.0; 
var gravity = -5; 
var canJump = true;
var jumpHeight = 2.0;
private var grounded = false;


 function FixedUpdate() { 
 rigidbody.AddForce (Vector3(0, gravity, 0)); 
  
 var cameraTransform = Camera.main.transform; 

   // Forward vector relative to the camera along the x-z plane    
   var forward = cameraTransform.TransformDirection(Vector3.forward); 
   forward.y = 0; 
   forward = forward.normalized; 

   // Right vector relative to the camera 
   // Always orthogonal to the forward vector 
   var right = Vector3(forward.z, 0, -forward.x); 

  
 if (Input.GetKey ("w")) { 
   rigidbody.AddTorque(right * speed * Time.deltaTime); 
   
   } 

if (Input.GetKey("s")) { 
   rigidbody.AddTorque(right * -speed * Time.deltaTime); 
   } 
    
if (Input.GetKey ("d")) { 
rigidbody.AddTorque(forward * -speed * Time.deltaTime); 
} 

if (Input.GetKey ("a")) { 
rigidbody.AddTorque(forward * speed * Time.deltaTime); 
 } 
 
 
 if (grounded)
    {
	
	var velocity = rigidbody.velocity;
	
	if (canJump  Input.GetButton("Jump"))
        {
            rigidbody.velocity = Vector3(velocity.x, jumpHeight , velocity.z);
        }
    }
 
 
   // We apply gravity manually for more tuning control
    rigidbody.AddForce(Vector3 (0, gravity * rigidbody.mass, 0));
    
    grounded = false;
 
 
}

 function OnCollisionStay ()
{
    grounded = true;    
}
7

Good use of emoticons :smile:! (Sorry, I have no idea how to help you.)

8

Angular velocity is clamped in the project physics settings. Raise the value if you want your ball to rotate faster.

9

Did you try my advice? Take out the Time.deltaTime in AddTorque

10

Thank You, i fixed it.