Roll the Dice - A Compiled JavaFX Script Example

i'm on my way to vegas to speak at the server side java symposium , so in keeping with that theme i wanted to create a simple dice program as today's example.  when you click the roll button, random values appear on the dice.  here's a screenshot of this application:

gamemain.fx

/*
 *  gamemain.fx - 
 *  a compiled javafx program that demonstrates creating custom
 *  components with compositenode
 * 
 *
 *  developed 2008 by james l. weaver (jim.weaver at lat-inc.com)
 *  to serve as a javafx script example.
 */

import javafx.ui.*;
import javafx.ui.canvas.*;
import java.lang.system;

frame {
  var model = gamemodel {}
  width: 210
  height: 170
  title: "dice"
  background: color.white
  content: 
    borderpanel {
      center:
        canvas {
          content:
            for (dicenum in [0 .. model.numdice - 1]) {
              model.newdice =
              dice {
                x: dicenum * 100 + 10
                y: 10
                width: 80
                height: 80
                facecolor: color.red
                pipcolor: color.white
              }
            }
        }
      bottom:
        flowpanel {
          content:
            button {
              text: "roll"
              defaultbutton: true
              action:
                function():void {
                  model.roll();
                }
            }
        }
    } 
  visible: true
  onclose:
    function():void {
      system.exit(0);
    }
}

dice.fx

/*
 *  dice.fx - 
 *  a compiled javafx program that demonstrates creating custom
 *  components with compositenode
 * 
 *
 *  developed 2008 by james l. weaver (jim.weaver at lat-inc.com)
 *  to serve as a javafx script example.
 */

import javafx.ui.*;
import javafx.ui.canvas.*;
import java.lang.math;
import java.lang.system;

public class dice extends compositenode {
  public attribute value:integer = 5;
  public attribute x:integer;
  public attribute y:integer;
  public attribute width:integer;
  public attribute height:integer;
  public attribute facecolor:color;
  public attribute pipcolor:color;
  
  attribute pipplace:pipplacement[];
  
  postinit {
    insert
      pipplacement {
        piplocsx: [
          .5, 0, 0, 0, 0, 0
        ]
        piplocsy: [
          .5, 0, 0, 0, 0, 0
        ]
      }
      into pipplace;
    insert
      pipplacement {
        piplocsx: [
          0.3, 0.7, 0, 0, 0, 0
        ]
        piplocsy: [
          0.7, 0.3, 0, 0, 0, 0
        ]
      }
      into pipplace;
    insert
      pipplacement {
        piplocsx: [
          0.2, 0.5, 0.8, 0, 0, 0
        ]
        piplocsy: [
          0.8, 0.5, 0.2, 0, 0, 0
        ]
      }
      into pipplace;
    insert
      pipplacement {
        piplocsx: [
          0.25, 0.25, 0.75, 0.75, 0, 0
        ]
        piplocsy: [
          0.25, 0.75, 0.25, 0.75, 0, 0
        ]
      }
      into pipplace;
    insert
      pipplacement {
        piplocsx: [
          0.2, 0.5, 0.8, 0.8, 0.2, 0
        ]
        piplocsy: [
          0.8, 0.5, 0.2, 0.8, 0.2, 0
        ]
      }
      into pipplace;
    insert
      pipplacement {
        piplocsx: [
          0.3, 0.3, 0.3, 0.7, 0.7, 0.7
        ]
        piplocsy: [
          0.8, 0.5, 0.2, 0.8, 0.5, 0.2
        ]
      }
      into pipplace;
  } 
    
  public function roll():void {
    value = (math.random() * 6 + 1) as integer;
  }
  
  public function composenode():node {
    group {
      transform: bind [
        translate.translate(x, y)
      ]
      content: bind [
        rect {
          x: 0
          y: 0
          width: this.width;
          height: this.height;
          fill: facecolor
        },
        for (pipidx in [0 .. value-1]) {
          circle {
            cx: bind pipplace[value - 1].piplocsx[pipidx] * width
            cy: bind pipplace[value - 1].piplocsy[pipidx] * height
            radius: width * .1
            fill: pipcolor
          }
        }
      ]  
    }
  }
}

gamemodel.fx

/*
 *  gamemodel.fx - 
 *  the model behind the dice game
 *
 *  developed 2008 by james l. weaver (jim.weaver at lat-inc.com)
 *  to serve as a javafx script example.
 */

class gamemodel {
  attribute numdice:integer = 2;
  attribute newdice:dice on replace {
    insert newdice into dice;
  }
  attribute dice:dice[];
  
  function roll():void {
    for (die in dice) {
      die.roll();
    }
  }
}

pipplacement.fx

/*
 *  pipplacement.fx - 
 *  the placement of the pips on a dice
 *
 *  developed 2008 by james l. weaver (jim.weaver at lat-inc.com)
 *  to serve as a javafx script example.
 */

public class pipplacement {
  public attribute piplocsx:number[];
  public attribute piplocsy:number[];
}

good luck!
jim weaver
javafx script: dynamic java scripting for rich internet/client-side applications
immediate ebook (pdf) download available at the book's apress site