player objects disappear when moving forward

Hi!

So I try to make my ball move but it keeps disappearing at times I recorded it so you guys can see what's going on. How can I fix this issue?

Thank you in advance and happy easter!

 

Looks like it could be the y portion of the rotation and the z position.

Try starting the game, but don't move like you normally do. In the inspector adjust the y rotation and see if it ever disappears. Then try the z position.

If one or both are the cause, make sure your code doesn't do that.

Post your code, if you get stuck, and maybe someone can help you further.

 

Okay, how exacly should I adjust the y rotation? to 0?

 

Well, what I originally meant was you may not want to be changing that in code? Though, yes, zero would be 'unchanged'.

 

Okay! I haven't changed anything in my code or in the z column where everything is set to 0 except for scale should it be set to 0 as well?

 

No, I don't think the scale matters.

Note, there's also the z position I mentioned before, though you haven't commented on that. I'm fairly certain that was responsible for one of the "disappearing acts", also.

 

Oh right! And I click the play button and changed the position in the Y rotation and z position and the ball did disappeared when I did that.

 

Ya.. well, just make sure your code is not changing either of those?

 

It doesn't!

 

How do they change while you're playing then?

 

The code I've written for the ball to move doesn't change at all when I test play it, only all the positions in the transform section change when I try to move the ball.

 

Hmm.. Can you post the ball moving code?

Check this thread for how to post code nicely: https://forum.unity.com/threads/using-code-tags-properly.143875/

 

Code (CSharp):

1. public class NewPiskelkontrol : MonoBehaviour
2.    {
3.        void Update()
4.        {
5.         var x = Input.GetAxis("Horizontal") * Time.deltaTime * 150.0f;
6.         var z = Input.GetAxis("Vertical") * Time.deltaTime * 3.0f;
7.  
8.  
9.         transform.Rotate(0, x, 0);
10.         transform.Translate(0, 0, z);
11.        }
12.  
13.  
14.  
15.    }

 

Okay, so it is rotating and on the y and moving on the z...
That is code better suited for a 3d program, I would imagine.

For 2D, you'd want to move on the x-axis (in your scene). You can "rotate" your sprite left/right by using a negative/positive x-scale factor, or by using the 'FlipX' property.

If you're just starting out, I'd suggest that you spend some time working on tutorials.
You can find lots of good stuff here: https://unity3d.com/learn/tutorials

 

Thank you it worked! I was wondering I have a sun I want to make spining all the time how do I do that?

 

You can rotate 2D objects on the z-axis. Try it out

 

I see thank you! Can I make so that it keeps spinning ingame? I guess I do it by making a script for it?

 

Yes, and yes

 

Alright! Then I do like I did with my ball that I mark the sun and add component and choose script?

 

Sure, if it's just rotating you can have the script just change the z rotation over time.

 

Okay I tried using this code but it doesn't work and I get error in Unity "All compiler errors have to be fixed before you can enter playmode! UnityEditor.SceneView:ShowCompileErrorNotification()"

Code (CSharp):

1. void RotateLeft () {
2.         transform.Rotate(Vector3.forward * -90);
3.        
4.     }
5.    
6.     // Update is called once per frame
7.     void Update () {
8.        
9.     }
10. }

and also tried this (copied now from unity's website

Code (CSharp):

1. public class ExampleClass : MonoBehaviour
2. {
3.     void Update()
4.     {
5.         // Rotate the object around its local X axis at 1 degree per second
6.         transform.Rotate(Time.deltaTime, 0, 0);
7.  
8.         // ...also rotate around the World's Y axis
9.         transform.Rotate(0, Time.deltaTime, 0, Space.World);
10.     }
11. }

 

The example looks okay, except that it's not the z-axis. As for the error - what is it?
The message you pasted in here only shows up as an additional messages, it's not a main one..

Try to figure that out & fix it and see if the script works.

 

Okay but I have four of the same messengers and nothing else, I tried double click on it and it doesn't work.

 

That is truly strange. Make sure the console is set to 'clear on play' (and/or just clear it once).
Then, go edit a file.. like delete a character and re-add it, save it & let unity recompile the script.

Do you see anything useful in the console at that time?

 

Alright! I cleared it and edited my script and saved it and the errors didn't show up again though my object won't rotate.

I tried with the following code though I think I will have to add "public void Rotate(float xAngle, float yAngle, float zAngle, Space relativeTo = Space.Self);" I'm not sure though how I am going to write it in my script properly. Does it work if I just go with "Rotate(float xAngle)"?

Code (CSharp):

1. void Update()
2.     {
3.         transform.Rotate(Vector3.right * Time.deltaTime);
4.  
5.         transform.Rotate(Vector3.up * Time.deltaTime, Space.World);
6.      
7.      
8.     }
9.  
10.  
11.      
12.     }

 

Try this (you can adjust the speed in the inspector):

Code (csharp):

1. [SerializeField]
2. float rotSpeed = 20;
3. void Update()
4. {
5.    transform.Rotate(Vector3.forward * rotSpeed * Time.deltaTime);
6. }

 

It worked! Thank you very much!

 

You're welcome

 

Hello everyone, I am facing similar problem, even after trying multiple methods to transform. My complete code is as below wherein my character is disappearing every time when I move:

void Start()
{
anim = GetComponent<Animator>();
rb = GetComponent<Rigidbody2D>();

}

private void Update()
{
if(input != 0)
{
anim.SetBool("isRunning", true);
}
else
{
anim.SetBool("isRunning", false);
}

//below if statement reflects that the player character(object) has zero rotation if input is 1. And has 180 degree rotation if input is -1
if (input > 0)
{
//transform.eulerAngles = new Vector3(0, 0, 0);
transform.rotation = Quaternion.Euler(0f, 0f, 0f);
}
else if (input < 0)
{
//transform.eulerAngles = new Vector3(0, 180, 0); //Rotation 180 degrees for Player character along the Y axis
transform.rotation = Quaternion.Euler(0f, 180f, 0f);
}
}

// Update is called once per frame
void FixedUpdate()
{
//storing player's input
input = Input.GetAxisRaw("Horizontal");

//Moving player
rb.velocity = new Vector2(input * speed, rb.velocity.y);

}