Increasing score based on speed

Question

I am having trouble increasing score based on speed of the car with a few lines of code. I know how to do it with score vs time with

 yield return new WaitForSeconds(x);

, and I know how to this with 5 or 6 conditions and 20 lines of code ,but I wanted to do this with a few lines of code. It's possible ?.

What I want is:

 Score + = 1 point every 1 second if car speed = 1
 Score + = 1 point every 0.8 seconds if car speed = 3
 Score + = 1 point every 0.6 seconds if car speed = 6
 Score + = 1 point every 0.4 seconds if car speed = 9
 Score + = 1 point every 0.2 seconds if car speed> 9

I m using two Coroutines, one for score and another for speed, activated on Start function:

     private IEnumerator ChangeSpeed() 
     {
 
         while (true){
 
             yield return new WaitForSeconds(1);
 
                 if(speed < 2.0f || speed < 9.0f && gameStart){
                     speed += 3.0f; 
                 }
 
         
             if(speeding)
                 velocity = speed + 1f;
             else
                 velocity = speed;
         }
     }
 
 
 
 
     private IEnumerator ChangeScore() 
     {
         while (true){
 
             yield return new WaitForSeconds(1);
 
             if(gameStart){
 
                 scoreNum += 1;
 
                 scoreText.text = scoreNum.ToString();
             }
         }
     }

Answer 1

What if you plotted an equation that returned the time interval between each point assignment?

Your independent variable being speed (x-axis) and your dependent variable being the time interval (y-axis). If you plot the function

y = -0.1x + 1.1

you can return any time interval value you want between 1 and 9. Then you plug in this result into your WaitForSeconds to achieve the appropriate wait time. This could look something like this:

     float speed = Mathf.Truncate(objSpeed); //Edit: needed so that you always test an integer
     if (speed >= 1 && speed <= 9) {
         waitTime = -0.1 * speed + 1.1;
     } else if (speed > 9) {
         waitTime = 0.2f;
     } else if (speed < 1) {
         waitTime = Mathf.Infinity;
     }

By truncating the objSpeed and plugging in the result, you can setup these boundaries. It's also important to note that waitTime should be a global variable to ensure that it's value carries from previous frames.

I hope that this helps to answer your question. Sorry it was so long, but I wanted to try to build something from the ground up with an alternative approach. This code is untested, but I hope the theory at least comes across if nothing else. I hope this helps!

Increasing score based on speed

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