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Question by AndreasX12 · Jul 24, 2013 at 12:44 AM · changefloatconvertvalue

Positive to negative not working?

Hi, what I'm trying to achieve is a way to set my car in reverse when my button is pressed / when changeDirection is called.

This is my current code:

 bool IsTouchingGearBtn;
 
 IEnumerator changeDirection() {
     
     IsTouchingGearBtn = true;
     
     if(isD == false) {

         speed = 0;
         speedSliderValue = -speedSliderValue;        
         isD = true;
             
     } else if(isD == true) {

         speed = 0;
         speedSliderValue = +speedSliderValue;
         isD = false;

     }
 
     yield return new WaitForSeconds(0.1f);
     
     IsTouchingGearBtn = false;
     
 }

isD is changing every time I press my button, but I have to press the button 2 times to make it change to a positive/negative value.

Do anyone have any idea of why this could be happening?

Thanks, Andreas.

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Answer by chris_taylor · Jul 24, 2013 at 12:53 AM

 speedSliderValue = +speedSliderValue;

that does nothing I would change

 if(isD == false) {
  
        speed = 0;
        speedSliderValue = -speedSliderValue;     
        isD = true;
  
     } else if(isD == true) {
  
        speed = 0;
        speedSliderValue = +speedSliderValue;
        isD = false;
  
     }

To this

 speed = 0;
 speedSliderValue = -speedSliderValue; //this will get you the opposite so if its -4 it return 4 and if its 4 then it returns -4
 isD = !isD // if you still need isD for somewhere else 
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avatar image AndreasX12 · Jul 24, 2013 at 10:26 PM 0
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Thank you so much! I didn't know that -value made it opposite. Thanks alot! :D

avatar image chris_taylor · Jul 24, 2013 at 10:47 PM 0
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Your welcome! I'm here to help

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