CODEWITHSUNDEEP
c#unity-game-engine
ncj -
ncj -

Reputation: 9

Increasing variable gradually in Unity, the variable keeps reverting

I am currently developing a 2d game in Unity, it is an endless level runner game. I am trying to increase the speed of the moving objects over time, however the speed keeps reverting. I have tried numerous different ways of changing this code but I cannot seem to get it to work. Does anyone have any ideas?

Here is my code:

public class pipeMove : MonoBehaviour
{
    public float speed = 6f;
    float targetSpeed = 12f;

    void FixedUpdate()
    {
        transform.position += Vector3.left * speed * Time.deltaTime;
        Debug.Log("Speed: " + speed);
        if (speed < targetSpeed)
        {
            speed += 2f * Time.deltaTime;
        }
    }
}

This is what I'm seeing in my log:

Speed: 7.599998
UnityEngine.Debug:Log (object)
pipeMove:FixedUpdate () (at Assets/scripts/pipeMove.cs:13)

Speed: 12.00009
UnityEngine.Debug:Log (object)
pipeMove:FixedUpdate () (at Assets/scripts/pipeMove.cs:13)

Speed: 12.00009
UnityEngine.Debug:Log (object)
pipeMove:FixedUpdate () (at Assets/scripts/pipeMove.cs:13)

Speed: 11.62008
UnityEngine.Debug:Log (object)
pipeMove:FixedUpdate () (at Assets/scripts/pipeMove.cs:13)

Speed: 9.620035
UnityEngine.Debug:Log (object)
pipeMove:FixedUpdate () (at Assets/scripts/pipeMove.cs:13)

Speed: 7.619998
UnityEngine.Debug:Log (object)
pipeMove:FixedUpdate () (at Assets/scripts/pipeMove.cs:13)

Speed: 12.00009
UnityEngine.Debug:Log (object)
pipeMove:FixedUpdate () (at Assets/scripts/pipeMove.cs:13)

I am not sure what is making the speed increase and decrease rather than just increase.

Upvotes: 0

Views: 1503

Answers (2)

Guest
Guest

Reputation: 1

maybe try to make it a local Variable just so nothing can edit it outside the FixedUpdate.

public class pipeMove : MonoBehaviour
{
    void FixedUpdate()
    {
        float speed = 6f;
        float targetSpeed = 12f;

        transform.position += Vector3.left * speed * Time.deltaTime;
        Debug.Log("Speed: " + speed);
        if (speed < targetSpeed)
        {
            speed += 2f * Time.deltaTime;
        }
    }
}

Upvotes: 0

mabezat
mabezat

Reputation: 103

try this one

using UnityEngine;
     
     public class pipeMove : MonoBehaviour
     {
         private float speed  = 6f;
         private float targetSpeed = 12f;
         
         void Update ()
         {
             if (speed < targetSpeed)
                 speed += 2f * Time.deltaTime;
         }
     }

From Unity answers

Upvotes: 1

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