Stanislav Stankov

Assembler snake

01.10.10Posted by Stanislav Stankov in UncategorizedComments Off

Code:

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name "snake"

; създай snake.com
org 100h;

jmp start

; ------ константи ------
; клавишни кодове на bios
KEY_LEFT equ 4bh
KEY_RIGHT equ 4dh
KEY_UP equ 48h
KEY_DOWN equ 50h
KEY_ESC equ 1bh
KEY_SPC equ 39h

; константи отнасящи се до змията
SNAKE_BODY_COLOR equ 0eh
SNAKE_BODY_CHAR equ '*'
SNAKE_BODY_SIZE equ 7

; координати на змията, посока от главата към опашката
snake dw SNAKE_BODY_SIZE dup(0)

; последен елемент от змията
tail dw ?

; накъде е насочена змията при начално стартиране
cur_dir db KEY_RIGHT

wait_time dw 0

; начално съощение към потребителя, първият ред е празен, защото през него минава змията
; $ се обозначава края на съобщението
msg db "======================", 0dh, 0ah
db "=========Snake=========", 0dh, 0ah
db " Правила на играта:", 0dх, 0ah
db " Змията се управлява от клавишите за посока", 0dh, 0ah
db " ESC спира играта", 0dh, 0ah
db "======================", 0dh, 0ah
db "======================$", 0dh, 0ah

; ------ КОД ------

start:
; Изписване на начално съощение с координати (DS:DX)
mov dx, offset msg
mov ah, 9
int 21h

; скриване на курсора
mov ah, 1
mov ch, 2bh
mov cl, 0bh
int 10h

game_loop:
; Избиране на страница, VIDEO MODE
mov al, 00h
mov ah, 05h
int 10h

; хващане на новата глава на змията
mov dx, snake[0]

; преместване на курсора на позиция (dl, dh);
; DH - red
; DL - kolona
mov ah, 02h
int 10h

; Принтиране върху екрана на SNAKE_BODY_CHAR, на позицията на курсора:
; AL - char - a, знака който ще отпечатва
; BL - cvqt
; CX - колко пъти да повтори знака
mov al, SNAKE_BODY_CHAR
mov ah, 09h
mov bl, SNAKE_BODY_COLOR
mov cx, 1
int 10h

; хващаме опашката
mov ax, snake[SNAKE_BODY_SIZE * 2 - 2]
mov tail, ax

; извикване на процедурата move_snake
call move_snake

; премества курсора на позиция (dl, dh) -> позицията на опашката (tail)
; DH - red
; DL - kolona
mov ah, 02h
mov dx, tail
int 10h

; слага ' ' на позицията на курсора (сриваме старата опашка)
; DH - red
; DL - kolona
mov al, ' '
mov ah, 09h
mov cx, 1
int 10h

check_for_key:
; проверява дали има клавишен код в буфера на клавиетурата
mov ah, 01h
int 16h

jz no_key

; приверява дали е натиснат клавиетурен клавиш
; AH - BIOS kod
; AL - ASCII char
mov ah, 00h
int 16h

; проверява дали последно хванатия клавиш е бил ESC, ако да, се препраща към stop_game
cmp al, KEY_ESC
je stop_game

; хваща се последният натиснат клавиш, като посока
mov cur_dir, ah

no_key:
; ако няма хванат клавиш изчаква малко време преди да провери отново

mov ah, 00h
int 1ah

cmp dx, wait_time
jb check_for_key

add dx, 4
mov wait_time, dx

; вечен интервал
jmp game_loop

stop_game:
; показва курсора черен
mov ah, 1
mov ch, 0bh
mov cl, 0bh
int 10h

ret

; --------------------
; Процедури
; --------------------

; move_snake, създава анимация, като премества
; всяка част от тялото на змията една позиция напред,
; като изтрива опашката после <- това става в главната програма.
; Идеята е последната част се изтрива, а другите части се преместват:
; част0[ i ] -> част[ i + 1 ]
move_snake proc near
mov ax, 40h
mov es, ax

; DI, взема позицията на опашката
mov di, SNAKE_BODY_SIZE * 2 - 2

; премества всички части на змията
mov cx, SNAKE_BODY_SIZE - 1
move_array:
mov ax, snake[di - 2]
mov snake[di], ax
sub di, 2

; върти докато di = 0
loop move_array

cmp cur_dir, KEY_LEFT
je move_left

cmp cur_dir, KEY_RIGHT
je move_right

cmp cur_dir, KEY_UP
je move_up

cmp cur_dir, KEY_DOWN
je move_down

jmp end_move

move_left:
mov al, b.snake[0]
dec al
mov b.snake[0], al
cmp al, -1
jne end_move
mov al, es:[4ah]
dec al
mov b.snake[0], al
jmp end_move

move_right:
mov al, b.snake[0]
inc al
mov b.snake[0], al
cmp al, es:[4ah]
jb end_move
mov b.snake[0], 0
jmp end_move

move_up:
mov al, b.snake[1]
dec al
mov b.snake[1], al
cmp al, -1
jne end_move
mov al, es:[84h]
mov b.snake[1], al
jmp end_move

move_down:
mov al, b.snake[1]
inc al
mov b.snake[1], al
cmp al, es:[84h]
jbe end_move
mov b.snake[1], 0
jmp end_move

end_move:
ret

move_snake endp

snake example zip

thanks to : snake.asm
more code examples at : assembler source code

Time Display

01.06.10Posted by Stanislav Stankov in actionscript 3Comments Off

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/**
* Convert netStream.time (or seconds) into String format HH:MM:SS
* @param seconds
* @return formated string HH:MM:SS
*/
public static function formatTime(time:Number):String {
if (time < 0 || isNaN(time)) {
return "00:00";
}

const hours:Number = Math.floor(time / 3600 % 24);
const minutes:Number = Math.floor(time / 60 % 60);
const seconds:Number = Math.floor(time % 60);

const hString:String = hours < 10? "0" + hours: "" + hours;
const mString:String = minutes < 10? "0" + minutes: "" + minutes;
const sString:String = seconds < 10? "0" + seconds: "" + seconds;

return hours > 0 ? hString + ":" + mString + ":" + sString : mString + ":" + sString;
}

Example:

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trace(formatTime(103));
//01:43

trace(formatTime(3));
//00:03

trace(formatTime(3653));
//01:00:53

Email RegExp

09.28.09Posted by Stanislav Stankov in actionscript 3Comments Off

Email check if is valid with regular expression.

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var email_re:RegExp = /^\s*[\w\-\+_]+(\.[\w\-\+_]+)*\@[\w\-\+_]+\.[\w\-\+_]+(\.[\w\-\+_]+)*\s*$/;
if (!email_re.test(_email_ctti.text)) {
//Missing field/Invalid email;
}

Post PHP vars without form

09.18.09Posted by Stanislav Stankov in PHPComments Off

You have to have cURL enabled. Take a look

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<?php
$email = $_POST['email'];

$ch = curl_init('http://www.aweber.com/scripts/addlead.pl');
curl_setopt ($ch, CURLOPT_POST, 1);
curl_setopt ($ch, CURLOPT_POSTFIELDS, "from=".$email."&name=somename&meta_web_form_id=1829234431&meta_split_id=&unit=rm101-sign-up&redirect=http://www.aweber.com/form/thankyou_vo.html&meta_redirect_onlist=&meta_adtracking=&meta_message=1&meta_required=from&meta_forward_vars=0");
curl_exec ($ch);
curl_close ($ch);
?>

Adobe Flash CS3 ACE Exam paper

09.16.09Posted by Stanislav Stankov in UncategorizedComments Off

So its little to late to show off, but just want to show you guys.
certified expert

Flash video Player Snapshot

09.14.09Posted by Stanislav Stankov in actionscript 3, PHP, projects & snippetsComments Off

Hi I have recently working on saving different format images from flash. My previous work on this script was: Image Encode with Flash and PHP. Here you can create snapshots from video source.

Example

In this example you can save exported images also in your computer. I like this example more, because you can get different images, not boring same image again.

Screenshots:
snapshot file 1
snapshot file 2
snapshot file 3

Custom Flash Video Player

09.14.09Posted by Stanislav Stankov in actionscript 3, projects & snippetsComments Off

I created easy to functionality to extend player. Here is the link:

You pass total of 4 flash variables:

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var flashvars = {};
flashvars.videoURL = "running man.mp4";
flashvars.autoPlay = 0;
flashvars.isImage = 1;
flashvars.imageURL = "RunningMan.jpg";

I’m using swfobject ot embed it in page. So lets say little more about variables:
videoURL is link to video location;
autoPlay is flag, if = 1, then video will start automatically playing. If = 0, then will stay stopped until play button is clicked;
isImage is flag, if = 1, them you have to pass image location to imageURL variable, to be loaded.If = 0, then no image is loaded;
isImage is image location;

Note: autoPlay and isImage cannot be 1 at the same time! Player will throw error. Also please use 0 or 1 for flags, not false or true.

Image Encode with Flash and PHP

09.10.09Posted by Stanislav Stankov in actionscript 3, PHPComments Off

hi, this is a little project to save export/save images from flash.

image encoder

This application allow you to see how to export in different image formats like: png, jpg and bmp.

I create class ImageCreator, whit it it’s this easy create images on server. You call the class like this:

1 2	var imagecreator:ImageCreator = new ImageCreator(image_spr, ImageCreator.EXPORT_TYPE_PNG, name); imagecreator.addEventListener(ImageCreator.EVENT_COMPLETE_SAVING, completeWritingEvent);

Event ImageCreator.EVENT_COMPLETE_SAVING, will be dispatched when image is correctly saved on your server.
This is ImageCreator Class

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package com.stanislavstankov.images {
import com.adobe.images.*;
import flash.display.BitmapData;
import flash.display.Sprite;
import flash.events.Event;
import flash.events.EventDispatcher;
import flash.net.URLLoader;
import flash.net.URLRequest;
import flash.net.URLRequestMethod;
import flash.net.URLVariables;
import flash.utils.ByteArray;

public final class ImageCreator extends EventDispatcher {

public static const EVENT_COMPLETE_SAVING:String = "eventCompleteSaving";

public static const EXPORT_TYPE_JPG:int = 0;
public static const EXPORT_TYPE_PNG:int = 1;
public static const EXPORT_TYPE_BMP:int = 2;

private const _FOLDER_FILE:String = "http://projects.stanislavstankov.com/imageEncoder/php";
private const _PHP_FILE:String = "/imgEncoder.php";

private var _filename:String;

/*------------------------------------
Constructor
------------------------------------*/
/**
* ImageCreator will create image on the server where the php file is.
* Event EVENT_COMPLETE_SAVING, will be dispatched when image is created on server.
* Also there is one get propert filepath, that will return the path where the image is saved.
* @param Dispaly object - sprite or moviclip that will be exported for image
* @param type of image that will be saved
* @param name of the file
* @param background color if transperent, leave it 0. If you need background change the value. It is ARGB type.
*/
public function ImageCreator($displayObjectExport_:Sprite, $exportType_:int, $name_:String, $fillColorARGB_:uint = 0x0):void {
var transperentFlag:Boolean = false;
if ($exportType_ == EXPORT_TYPE_PNG) {
transperentFlag = true;
}

const bmpdata:BitmapData = new BitmapData($displayObjectExport_.width, $displayObjectExport_.height, transperentFlag, $fillColorARGB_);
bmpdata.draw($displayObjectExport_);

createImage(bmpdata, $exportType_, $name_);
}
/*------------------------------------
Public methods
------------------------------------*/

public function get filepath():String {
return _filename;
}

/*------------------------------------
Private methods
------------------------------------*/

private function createImage($bmpdata_:BitmapData, $exportType_:int, $name_:String):void {
var byteArray:ByteArray;
var contentType:String;

switch ($exportType_) {
case EXPORT_TYPE_JPG:
var jpgencode:JPGEncoder = new JPGEncoder(100);
byteArray = jpgencode.encode($bmpdata_);
contentType = 'image/jpg';
$name_ += ".jpg";
break;
case EXPORT_TYPE_PNG:
byteArray = PNGEncoder.encode($bmpdata_);
contentType = 'image/png';
$name_ += ".png";
break;
case EXPORT_TYPE_BMP:
byteArray = BMPEncoder.encode($bmpdata_);
contentType = 'image/bmp';
$name_ += ".bmp";
break;
default:

break;
}

const request:URLRequest = new URLRequest(_FOLDER_FILE + _PHP_FILE + "?name=" + $name_);
request.contentType = contentType;
request.method = URLRequestMethod.POST;
request.data = byteArray;

const loader:URLLoader = new URLLoader(request);
loader.addEventListener(Event.COMPLETE, loadResultHandler);
}

/*------------------------------------
Event Functions
------------------------------------*/

private function loadResultHandler(info:Event):void {
info.target.removeEventListener(Event.COMPLETE, loadResultHandler);
var urlvars:URLVariables = new URLVariables(info.target.data);
_filename = _FOLDER_FILE + "/" + urlvars.filename;

dispatchEvent(new Event(EVENT_COMPLETE_SAVING));
}

}
}

PHP imgEncoder.php file:

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<?php
if (isset($GLOBALS["HTTP_RAW_POST_DATA"])) {
//$fullFilePath = dirname(__FILE__) . "/" . $_GET['name'];
$fullFilePath = $_GET['name'];

$handle = fopen($fullFilePath,"w");
fwrite($handle, $GLOBALS["HTTP_RAW_POST_DATA"]);
fclose($handle);

echo "result=1&filename=" . $fullFilePath;
} else {
echo 'result=0';
}
?>

Source file here

Edit 14.09.2009
Flash video Player Snapshot

Top 10 Free Resources for Background Patterns and Textures for Web Designers

06.28.09Posted by Stanislav Stankov in UncategorizedComments Off

Quite often we stumble on to a blog that looks bland, in dire need of some color, a little bit of character, these sites maybe aren’t very familiar with blog design, let alone CSS. The simplest way to freshen up a site is with a new theme or to do a little CSS tweaking with your current theme. You could be surprised with the results. In this article I will show you the best resources for backgrounds and textures.

go to full blog post

ActionScript 3. Resources

06.22.09Posted by Stanislav Stankov in actionscript 3Comments Off

Hi here is resources of ActionScript 3 libraries.

From Adobe Labs

The Adobe Developer Rel

ations team is releasing a set of free and open ActionScript 3.0 APIs to help developers get started building Flex 2.0 applications. These libraries are of beta quality and we have released them as-is under this license. Adobe does not support them.

corelib
FlexUnit
Flickr
Mappr
RSS and Atom libraries
Odeo
YouTube