Flash mobile lottery Program Design: Lucky Draw operation

I. Lucky Draw

Flash provides some keyboard operations, import flash. UI. keyboard; this package provides keyboard operations,

For keyboard interaction, first import

Import flash. display. Sprite;

Import flash. Events .*;

Import flash. UI. keyboard;

 

1. Program code:
2. Public class telephone extends Sprite
3. {
4. Public Function telephone ()
5. {
6. Addeventlistener (keyboardevent. key_down, keydown); // keyboard listener
8. }
10. Private function keydown (Event: keyboardevent): void
11. {
13. Switch (event. keycode)
14. {
15. Case keyboard. Enter:
16. // Start
17. Break;
18. Case keyboard. Space:
20. // Pause
21. Break;
23. .........................
24. ..............................
25. ........................................ .. // Set another keyboard as follows
26. }
27. }
29. }

Okay, this basic model has been set up. Next, we will add the functions we need in it. If we do a lucky draw, how can we pause the number rolling and so on?

 

2. Add a keyboard operation key

As needed, we can freely combine the keyboard locations we need, including common carriage return, space, R, P, and other setting keys.

Switch ()

{

 

Case keyboard value 1:

Break;

Case keyboard value 2:

Break;

 

}

 

 

3. Let the numbers move

How can numbers be moved? A simple idea is to use the math. Random () function to randomly retrieve a value of the array length, and then combine it with a listener to generate a numerical change for each frame;

Private var showmsg: textfield;

 

Private var telnumber: array = new array ();

1. Stage. addeventlistener (event. enter_frame, run );
3. Private function run (E: Event): void
4. {Var num: Int = math. Round (math. Random () * telnumber. Length); // randomly select an integer
5. Trace (Num );
6. Showmsg. Text = string (telnumber [num]); // display in text
7. }

Resolution: telnumber is an array

Math. Round (math. Random () * telnumber. Length); // select an integer randomly.

In this way, the integer of the array length can be obtained.

 

Such a mobile phone number comes out.