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Question by alexguy2552 · Jul 21, 2013 at 01:01 AM · gameprogrammingjumphardfun

Delay for jumping, I've looked everywhere.

Okay, I'm developing my second game, and it's a 2D game where I have a cube that needs to jump over a wall. I have my jump script and it works well, one problem, I can press the up arrow a million times and the cube will continue jumping. I'd like it to where when I press the up arrow it jumps once and then I have to wait a couple seconds before being able to press up arrow again. Here's my code. Thanks

pragma strict

ar speed : float = 10.0; var jumpHeight = 10.0;

function Update() { var translation : float = Input.GetAxis("Horizontal") speed; translation = Time.deltaTime; transform.Translate( translation, 0, 0);

 if(Input.GetKeyDown(KeyCode.UpArrow))
 {
     transform.Translate(Vector3.up * jumpHeight * Time.deltaTime);
 }

}

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Answer by paulygons · Jul 21, 2013 at 02:49 AM

Sounds like you just need a timer of some sort. I tend to go with a boolean that I flip on (set to true) after the jump is executed, then start a coroutine that will yield for the amount of delay you need, then flips the boolean back off. Of course you'll need to add a check of the boolean in your if statement.

         var spamBlocker : boolean;
         
         if(Input.GetKeyDown(KeyCode.UpArrow) && spamBlocker == false)
         {
             transform.Translate(Vector3.up * jumpHeight * Time.deltaTime);
             spamBlocker = true;
             //start coroutine that yields then sets spamBlocker to false
         }
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Answer by superluigi · Jul 21, 2013 at 05:16 AM

I took the liberty to test this for you before posting it and it works.

 var speed : float = 10.0;
 var jumpHeight : float = 10.0;
 var airTime : float = 0;
     
 function Update()
 {
     var translation : float = Input.GetAxis("Horizontal") * speed;
     translation *= Time.deltaTime;
     transform.Translate(translation, 0, 0);
     if (airTime > 0)
     {
         airTime -= Time.deltaTime;
     }
     TimedJumps();
 }
 
 function TimedJumps()
 {
     if (Input.GetKeyDown(KeyCode.UpArrow) && airTime <= 0)
     {
         airTime = .5;
         transform.Translate(Vector3.up * jumpHeight * Time.deltaTime);        
     }
 }
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avatar image superluigi · Jul 21, 2013 at 05:18 AM 0
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also translate is not the best way to move something because it with translate the moving object will ignore collisions. If there was a wall you could just walk through it with translate sometimes.

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