Question plaform moving weird?(resolved)

hello guys, i need your help, i created a platform which is supposed to go right then after 2secondes go up after 2secondes goes left etcetera to form a square movement
i write this code but i dont know why the platform do a diamond movement its very weird

Code (CSharp):

1. public class RotatingPlatform : MonoBehaviour
2. {
3.     public Rigidbody2D rotatingPlatformRb;
4.     public float speed = 100f;
5.     public float firstRotate = 0f;
6.     public float secondRotate = 2f;
7.     public float thirdRotate = 4f;
8.     public float fourthRotate = 6f;
9.     public float lastRotate = 8f;
10.  
11.     void Start()
12.     {
13.        
14.     }
15.     void Update()
16.     {
17.         firstRotate += Time.deltaTime;
18.         if(firstRotate >lastRotate) firstRotate = 0f;
19.         if(firstRotate < secondRotate && firstRotate > 0f) moveRight();
20.         if(firstRotate < thirdRotate && firstRotate > secondRotate) moveUp();
21.         if(firstRotate < fourthRotate && firstRotate > thirdRotate) moveLeft();
22.         if(firstRotate < lastRotate && firstRotate > fourthRotate) moveDown();
23.  
24.     }  
25.     void moveRight()
26.     {
27.         rotatingPlatformRb.velocity = new Vector2 (speed * Time.fixedDeltaTime, rotatingPlatformRb.velocity.y);
28.     }
29.     void moveUp()
30.     {
31.         rotatingPlatformRb.velocity = new Vector2 (rotatingPlatformRb.velocity.x, speed * Time.fixedDeltaTime);
32.     }
33.     void moveLeft()
34.     {
35.  
36.         rotatingPlatformRb.velocity = new Vector2 ((speed * -1) * Time.fixedDeltaTime, rotatingPlatformRb.velocity.y);
37.     }
38.     void moveDown()
39.     {
40.         rotatingPlatformRb.velocity = new Vector2 (rotatingPlatformRb.velocity.x, (speed * -1) *  Time.fixedDeltaTime);
41.     }
42. }
43.  
44.  

sorry for my english btw

 

I think I found the problem. Try replacing this line
rotatingPlatformRb.velocity = new Vector2 (speed * Time.fixedDeltaTime, rotatingPlatformRb.velocity.y);
with this:
rotatingPlatformRb.velocity = new Vector2 (speed * Time.fixedDeltaTime, 0);

and do the same for the other functions. This way the velocity on the axis you are not using is set to 0

Also, you might want to change your code so no unnecesary conditions are checked, just to make it more tidy and efficient:

1. firstRotate += Time.deltaTime;
2. if(firstRotate >lastRotate) firstRotate = 0f;
3. else if(firstRotate < secondRotate && firstRotate > 0f) moveRight();
4. else if(firstRotate < thirdRotate && firstRotate > secondRotate) moveUp();
5. else if(firstRotate < fourthRotate && firstRotate > thirdRotate) moveLeft();
6. else if(firstRotate < lastRotate && firstRotate > fourthRotate) moveDown();

 

but if the fps are not stable, is time.fixeddeltatime not used to make the platform not go faster or slower if the fps fluctuate?
i heard something like that somewhere

 

it worked thanks dude !! and did nt know about else if too i see now thanks

 

ohhh i see thank you , i will immediately change it to FixedIUpdate instead of update

 

yes yes that s make sense, thank you for all your replies.