I assume that you are doing top-down shooter.

let's based on this assumption will make the code

So The Math.random() function returns a floating-point, pseudo-random number in the range [0, 1); that is, from 0 (inclusive) up to but not including 1 (exclusive) (please read here )

Open your app.js and insert function:

App = function()// - IT YOUR CODE

{

...

//INSERT ONLY THIS FUNC!!!

//function must be inside App



this.getRandomArbitrary = function(min, max) {

   return Math.floor(Math.random() * (max - min)) + min;

}

...



}

Then find some object whitch always on your scene and open it onUpdate function. Then insert :

if(this.falltimer>=10){

    var x = wade.app.getRandomArbitrary(-wade.getScreenWidth()/2,wade.getScreenWidth()/2);

    var y = -wade.getScreenHeight()/2;    

    var tiro = wade.getSceneObject("Tiro").clone();

    tiro.setPosition(x, y-50);

    wade.addSceneObject(tiro);

    tiro.setVelocity(0,250);

    this.falltimer=0;

} else {

    (isNaN(this.falltimer))? this.falltimer=10 : this.falltimer++;

}

And then you get something like:

Good Morning,
This example I understood and worked well ...
But I went to see the documentation that you passed and has a function that does not repeat the numbers but when using it is giving this error:
"Uncaught TypeError: wade.getRandomInt is not a function (T, 5:21)"

Sorry, mate. I give you link not to wade documentation but javascript documentation

It not wade - just custom function and if you want use it do same as in example - include function in wade.app :

if you wanna use this

function getRandomInt(min, max) {

  min = Math.ceil(min);

  max = Math.floor(max);

  return Math.floor(Math.random() * (max - min)) + min;

}

1.method:

App = function(){

//place in app

this.getRandomInt=function(min, max) {

  min = Math.ceil(min);

  max = Math.floor(max);

  return Math.floor(Math.random() * (max - min)) + min;

}

//to call later you can do wade.app.getRandomInt(min,max)

}

2.method var global

//place before app

var getRandomInt =function(min, max) {

  min = Math.ceil(min);

  max = Math.floor(max);

  return Math.floor(Math.random() * (max - min)) + min;

}







App = function(){



//to call later you can do getRandomInt(min,max) or window.getRandomInt(min,max)

}

Very good, my friend...
It worked perfectly and I understood ...
You who help us when we need are the best ...
Thanks a lot for the help...