[studio scroll]

Hello, I want to generate random integer numbers using utils.generateRandomValueBetween(min,max), but I am getting floating points numbers only.

The idea is to display the numbers on the entities when they are created.

[ChristianFelgo Team]

Hi,

you can use Math.round() to get an integer from a float value.

Cheers, Chris

[studio scroll]

Ok, thanks. I got integer numbers by using:

property int randNums:utils.generateRandomValueBetween(1,100);

 

—-

//and then, passing the value from randNums to Text.

Text {
id:infoText;
width:200;
height:40;
text: randNums
}

However, it wasn’t exactly what I was looking for,

I needed unique numbers, but I got repeated numbers, so I guess I have to create a function to achieve that. Otherwise

if there is a function in VPlay that I can use to generate unique random numbers, kindly let me know. Cheers!

[David]

Hi,

 

You can simply use embedded Javascript functions to generate random integers. Following code gives you a random number between 0 and 1000.

var upperRange = 1000
Math.floor((Math.random()*upperRange)+1)

 

Cheers,

David

[ChristianFelgo Team]

The function utils.generateRandomValueBetween(min, max) does generate a new random number every time you call it. If you assign it to a property, then it only gets evaluated once at instantiation. However, the following example works as expected – each time a new entity is generated it gets assigned with a new integer value:

import VPlay 1.0
import QtQuick 1.1

GameWindow {  

  EntityManager {
    id: entityManager
    entityContainer: scene
  }

  Scene {
    id: scene

    Component.onCompleted: {

      for(var i=0; i<10; i++) {
        entityManager.createEntityFromComponentWithProperties(entityComponent, {x: i*20})
      }
    }


  }

  Component {
    id: entityComponent

    EntityBase {

      property int randNums: utils.generateRandomValueBetween(1,100)

      Text {
        text: randNums
        color: "blue"
      }
    }
  }
}

 

Does this solution work for you?

Cheers, Chris