Innovation

Use android device to connect to internet on PC using USB cable or any wireless source.

2011-12-27T15:25:00.000+05:30

I was new to android, and wanted to connect to internet via GPRS/EDGE/3G connections. But unfortunately i couldn't find any modem support in android. In run of demand for a DUN connection i found tethering option in Android phone and found connecting to PC for internet via Android is dead easy!, thanks to tethering, below are the steps and references:-

My devices and setup:
Android version: v2.2, Froyo
Device: ZTE Blade (Or Dell XCD35, Idea Blade in India)
PC: Toshiba Satellite C650 AMD Athlon II P320 CPU, HD4200 ATI card
OS: Windows XP

STEPS:
1. Enable Internet on your Android phone via any source you have access to like GPRS/EDGE/3G data plans.
2. Connect the phone to your Laptop/desktop using USB cable (Otherwise below option will be disabled)
3. Go to phone settings and enable USB tethering :-

Press Home -> press menu -> wireless & networks -> Tethering & portable hotspot -> USB Tethering
Enable this check button.

Once enabled, If your pc drivers are installed correctly, you will see HSUSB device connected message, remote NDIS adapter device will be shown on your device manager.

Verify the correct setup:
1. Check if your Android device shows BLUE USB icon on the taskbar which opens tethering upon touch event.
2. Open Device manager in windows XP or other OS. Network adapters should show

"Remote NDIS based internet sharing device"

My details are:
Manufacturer: ZTE Corporation
Location: Location 0 (ZTE HSUSB Device)
Control panel => Network Connections => Remote NDIS based internet sharing device

4. Test internet on your phone if it works, then for sure you will get same speed in your PC.

You can test the speed of your internet by simple command. Open cmd.exe from run dialog and type

ping google.com

below is output from my console:

Pinging google.com [74.125.113.104] with 32 bytes of data:

Reply from 74.125.113.104: bytes=32 time=516ms TTL=45
Reply from 74.125.113.104: bytes=32 time=517ms TTL=45
Reply from 74.125.113.104: bytes=32 time=513ms TTL=45
Reply from 74.125.113.104: bytes=32 time=515ms TTL=45

The lower your time is the faster your internet connection will be. EDGE normally shows values between 200 to 700. Values above it are very slow connection. I get ~250 average in low traffic, ~20-30KBps.

CONCLUSION:
Android's USB tethering just means to share internet from your device to other device no matter what the source of your internet is. So we don't need any kind of Dial Up networking support in phones. So this is a universal solution and that's why android don't need DUN :-), ironically many people abuse it to be a lacking feature. It works on any OS be it Windows or Linux.

References:
Tethering & Hotspot
http://support.google.com/mobile/bin/answer.py?hl=en&answer=182134

Share your mobile data connection:
http://support.google.com/mobile/bin/answer.py?hl=en&answer=168932

Windows XP's Android RNDIS device information, tethering, INF file
http://www.android.com/drivers/tetherxp.inf

ZTE Blade drivers:
http://www.zte.co.jp/products/handsets/handsets_gallery/softbank/info/201012/P020101217594818380622.zip
ftp://ca:welcome@ftp.brightpointuk.co.uk/Technical%20Support/ZTE/ZTE_Handset_USB_Driver.exe

Plugging Android phone to PC shows a CDROM with their drivers which upon enabling SDCARD gets removed.

How to get rid of slow android emulator during app development?

2011-12-20T16:25:00.000+05:30

We know that Android emulator starts even slower than the PC itself. But a simple solution to get rid of slower booting of droid emulator is -

Do not close the emulator until you are done with all build testings :-)

Simply run your android project and never close the emulator window until you are done with your work for the time, i am working with Eclipse and retest app builds as fast as we do with J2ME. All work the IDE has to do is upload/update the apk instead of relaunching of the emulator window again and again.

Happy Droidevelopment :-)

My games are on other game support blog

2011-11-25T12:05:00.000+05:30

I am releasing my game specific data to my other blog
http://gamesgreh.blogspot.com/

Recently released "On Road: Challenge The Fighters" on OVI.
http://store.ovi.com/content/219400

My Games Greh youtube video channel
http://www.youtube.com/user/GamesGreh

Very good multimedia converters.

2011-10-05T16:12:00.001+05:30

I was searching for a converter that can convert audio to mobile formats, i found SUPER (C), it is a great utility for multimedia workers. One more software i found excellent for audio production/conversion is "Extreme Sample Converter".

1. SUPER (C)
Link: http://www.erightsoft.com/SUPER.html

It can convert Audio/videos to many formats including rare MMF (Yamaha's SMAF mobile format, but i haven't tested it). AMR, 3GP, common audio and videos formats like FLV, SWF, AVI, formats for portable devices like IPhone, BlueRay, Nintendo DS (DPG), etc.

2. Extreme Sample Converter
Link: http://www.extranslator.com/

It can convert to almost all console, mobile, DLS, SF2 sound fonts, VSTi, AKAI, FLAC, YAMAHA etc containers. I converted Microsoft Windows (actually Roland) "General Midi DLS", gm.dls to gm.sf2, SoundFont and using in Midi Synthesis.

Intel doing monopoly to hinder AMD Fusion's productivity.

2011-09-20T17:14:00.003+05:30

Hello friends,

I am writing this post just to put my anger against Intel, we are trying to buy AMD's new fusion based laptop. But In North India shopkeepers are saying it is not available. Why? The models are present in the pamphlets but aren't avail? Whereas the same is available in South India (Vizag ).

Also i have been reading articles and reviews about AMD fusion but sadly internet is full of such a huge number of fake/biased reviews. I am using AMD powered Toshiba's C650. I am surprised by its performance and also it doesn't heat at all like Intel's i series CPU.

I have suffered Intel, i agree they are good in performance but the common sense is that at what price?
AMD performance is available at very low price.

We visited many shops, galleries, showrooms, but people are saying "It doesn't sell, it is not good", what rubbish. we are having 3 AMD systems. All are good. I have played Devil May Cry 4 on my laptop, runs much better than same priced Intel based laptop.

Intel TAKES your money, what it invests in Marketing and funding their agents. I am not a lawyer but i can read the stories of lawsuits.

You must read this article, news to see what Intel and Microsoft are behind the scenes:
http://www.foxnews.com/story/0,2933,520004,00.html

Below are the proofs of what Intel has been doing from many years:
http://www.electronicsweekly.com/blogs/david-manners-semiconductor-blog/2008/01/can-intel-ever-succeed-without.html
http://betanews.com/2007/06/21/amd-ceo-intel-is-a-monopoly-microsoft-isn-t/
http://blogs.computerworld.com/15270/ftc_sues_intel_for_illegal_monopoly_nvidia_and_amd_rejoice
http://blog.tmcnet.com/blog/rich-tehrani/intel-monopoly.html

Do a simple search by your own,
search "Intel Monopoly" on Google. you will be surprised how this giant is behaving.

Watch this YouTube video, and related ones and then read the following reviews! Judge yourself how these reviews have been intentionally biased.

AMD Llano APU vs Intel Sandy Bridge laptop
http://www.youtube.com/watch?v=XqBk0uHrxII&feature=related

Stupid, biased reviews, opposite of the above video(s):
http://www.xbitlabs.com/discussion/58674-2.html
http://www.pcmag.com/article2/0,2817,2375574,00.asp

What i wana say about AMD fusion and Intel's SandyBridge is:
AMD fusion => CPU + GPU instructions.
SandyBridge => CPU + glue + GPU
Sandy Bridge = Sandy Bridge, don't walk on it!

And moreover when did Intel's HD graphics be better than AMD-ATI Or NVIDIA?
Why should you pay >$500 for i5, i7, if you can get awesome performance in ~$200 phenom - x2

I am having 3 AMDs and 1 Intel, Believe me with the price of AMD CPUs, i can only get a celeron in Intel. Which cannot run NFS SHIFT. Or TIme Shift. But other hand, with AMD athlon, i have completed Devil May Cry 4 with decent speed. And the laptop costs rupees 24K ( $510 ), Toshiba C650, psg xxxxx18 model. It has 360 GB SSD, ATI 4200HD. Can you get such price and performance with Intel?

Best part is that i am running it with 800MHz cpu speed, with performance much much greater than 55000 ( $1170 ) intel dual core laptop of my friend.

Some very good BIT hacking for programmers,

2011-07-18T13:36:00.001+05:30

Today i found this page, looks very useful for all programmers. Many times we need some part of this page:

Link: http://www-graphics.stanford.edu/~seander/bithacks.html

Greh Game Engine , My techniques: Effects / Activity Stack

2011-07-18T13:16:00.002+05:30

Continuing from the last post about aayaam-kriya (space-action mapping), i am posting another technique i am using in GGE, i.e. Stack of effects (fx) and actions.

Before i start let consider a situation from Super Mario Bros. of NES. If you have played this game you might have collected coins, jumped on Goombas and tortoise. So i came up with this technique that i implemented on GGE pc, c++ version in July 2010. And now also in GGE J2ME version. This technique makes the above mentioned actions taken upon some collision, special actions etc. So let' go through it -

In this technique i use a class/struct, having variables for:
effect type, effect position, effect delay time, effect execution time, etc...

We have a vector of this class and we can push the required effect, effect be any external function / suit of inbuilt effects with some IDs. Suppose we want to show score gained by collecting a coin above player. We simply push a text display effect on x,y position for 1second.

Pseudo-code:
vector_of_fx.addEffect( FX_TYPE_TEXT, "1000 points", X, Y, 0 seconds later, for 1000 miliseconds );

Now this simple line can show "1000 points" at x,y for 1 second at some specific event like touching a coin. Now on every draw() call of you game, you can loop the items of this vector. Below is a sample:

public boolean draw( Graphics g ) {    // return true yani draw samapt
        if( m_effect_completed )
            return m_effect_completed;

        if( m_first_execution ) {
            m_first_execution = false;
            m_timer.reset_timer();
        }

        if( m_delay_enabled ) {
            if( m_timer.get_elapsed_time() < m_delay_time )
                return false;
            m_delay_enabled = false;
            m_timer.reset_timer();    // reset the timer on next call
        }

        if( m_timer.get_elapsed_time() < m_effect_execution_period ) {
            switch( m_effect_type ) {
            case FX_TYPE_TEXT_DISPLAY:
                if( m_font_id == 0 )
                    g.setColor(255, 255, 255);    // white text
                else {
                    g.setColor( 0, 0, 0 );        // black text
                }
                g.drawString( m_text, x, y, Graphics.TOP | Graphics.LEFT );
                break;

            case FX_TYPE_SPRITE_ANIMATION:
                m_spr.draw( g, x, y );
                break;
            }
            return false;
        }
        m_effect_completed = true;
        return m_effect_completed;

       // once true is returned remove this element from the vector of FX / Actions.
    }

This snippet is from my Greh Game Engine, J2ME version. However the code is converted into English, because it has Hindi words in it, I'll release the source after converting into English, so many people can use it.

TIP: This technique is so powerful that it can do most of your needs accomplished. Simply use functions in place of effects, like you wana switch to a cutscene once you enter a door, push your effects/actions. That's why i called effects/actions. The later can be the above written function!

Get source of j2me / java packages.

2011-07-04T13:55:00.002+05:30

Today i was trying to find source of java.lang.util.vector and i found this great site having huge sample and source library of j2me. You can find sources of all the packages and utilize them to implement something close to the library or even add-ons. Like creating multimap, modifying Vectors, stacks etc.

Below is the link for site i found by googling:
package: java.lang
http://jcs.mobile-utopia.com/jcs/s/package%3Ajava.lang

package: javax.microedition.lcdui
http://jcs.mobile-utopia.com/jcs/s/package%3Ajavax.microedition.lcdui

For java packages you can download GNU java classpath, i have this version:
classpath-0.98.tar.gz
source website: http://www.gnu.org/software/classpath/home.html

The best and simplest solution is JDK,
After installation of JDK, mine was 1.6.0, you can find the source of all the packages
in INSTALL_DIR/java/jdk1.6.0/src.zip

My favorite musics and music composers ;-)

2011-07-04T12:02:00.005+05:30

I am an audiophile, i listen to music a lot, from my childhood i used to collect music. Now i am composing music myself. I really thank a lot to those who created such wonderful musics that i can sing inside myself every time. I feel traveling whole universe and get into harmonics when i listen and, automatically, concentrate to music. Below are the music sources and their authors,

1. Chrono Trigger ( SNES console ), Chrono Cross (Playstation 1, this is my favorite, almost all tracks are great :-) )
Favorite tracks: "The Day the World Revived", "Corridors of Time", + 4, 5 more tracks.
Also: ocremix.org with "remix of When all hope has faded" this track is awesome ;-)

Listen on youtube: http://www.youtube.com/watch?v=7PxdorkqESA
Original source of remix: http://ocremix.org/remix/OCR01258/
Remixer Profile: http://ocremix.org/artist/4484/tyler-heath/remixes

composed by: Yasunori Mitsuda, http://en.wikipedia.org/wiki/Yasunori_Mitsuda

(Images: Yasunori Mitsuda )

2. Ninja Gaiden 1, 2 ,3 (NES console)
Composed by: More Yamasan, B. Hasake, & Miyazak

last.fm profile link: http://www.last.fm/music/More+Yamasan%2C+B.B.%2C+Yuhki%2C+Kimitaka+Matsumae

Quick link to download samples/full songs:
http://www.flyingomelette.com/gamemusic/mp3download_n.html

3. DeusEx: PC
Composer: Alexander Brandon, i like mostly of his compositions.
FB profile: http://www.facebook.com/pages/Alexander-Brandon/109469542411841

4. Batman, NES
Composer: Naoki Kodaka
Fav tracks: title screen's story cut-scene, stage 2, Stage 4, ending.

5. Kick Master, NES
Many more games...

Greh Game Engine, My techniques, (aayaam-kriya) Or Space-actions mapping

2011-07-03T15:07:00.000+05:30

What is Space-Action mapping?

When i was developing Desi ball game, i was in requirement of a little demo of "How to play this game." So i thought why not map the regions with some actions caused by specific event.

So i implemented this feature in my engine as add-on, Aayaam-Kriya, Or space-actions mapping. It is about taking some predefined action when something appears/happens in some region of level.

Example: Suppose there is a tree which increases players life when you pray below it, so we can write in our space-action mapping file:

[Entity] [position,size] [details like aplha, life etc...] [new details ] [some function id] .. etc

The mapper check for registered entities when they are inside the specific region, execute the changes/function defined in above line.

How i used it?
I used it in making little tutorial, when player come to a position say it to press some key, Or touches the cloud (but cloud is scene without collision!), so we define a region around cloud to warp player to new position, i.e. a portal. this technique is extremely useful.

I hope this could be also useful to others as well. Please let me know what you think about it and if you have some suggestions to make it much better.

What is Greh Game Engine?

2011-06-24T15:46:00.006+05:30

This is my own game engine using OpenGL (wherever available and good for use otherwise GDI). It includes a very simple design of level, entities and events. I wanted to share this because i use a lot of techniques, i invented, in my game engine which can be helpful to others.

I have no planning for releasing the source code, i know the design is the thing which helps more than code itself. So i am writing about the design of my Greh Game Engine.

Sprite:
it is special image(s) i.e. sprite sheet, following are the features you might not usually find in another engines (as i have experienced).

1. It maintains a polygon inside it. No polygon means sprite has no collision.
2. Its loadable manually or by a config file.
3. The config file has all information of sprite in relation to our virtual environment

like path relative to root / game folder.
Image size in % of the screen.
Polygon shape can be loaded by importing Image map created with GIMP's Web plugin - 'Image Map'.

Below are the only entities present inside my game engine.

Graphical Objects:
1. Drishya: Scene Graphic Object with parallax
2. Chitra: Graphic Object
4. Samanya Khiladi: Generic player
5. Khiladi / Nayak: User controlled generic player
6. PFX: particle effects

Description:
Drishya / Scene graphic objects (SGO):
As name suggests they don't have any collision. So we load a sprite without polygon data in config file. The SGOs maintain Z order for their render order.

Chitra / Graphic objects (GO):
Sprite with polygon data with least number of states so they have only few properties and best suitable for surface, tiles for walking, spikes, powers etc.
e.g coins, Goomba, fire balls in game like Super Mario Bros. of NES.

Samanya Khiladi / Generic Player (GP):
Advanced graphic objects with multiple states, and much more properties so they are usable as enemies with AI.

Khiladi, Nayak / Player (K):
Same as above but is controlled by user. We can switch between the two to take control of other enemies like done in game "Psi-Ops: The Mindgate Conspiracy", just by swapping pointer with GPs.

Particle effects (PFX):
Collection of graphics objects with advanced features. e.g. rain, fire, wind, weapons of players etc. It's the most powerful entity and can be used as any of above.

Now what if we remove / disable polygon data from GOs?
They become scenes :-), no collision automatically. Vice-verse for SGOs.

Engine's architecture
Instance system:
All entities have only one image loaded for them and maintain instance of property of their size, rotation, color, health, position, unique ID etc.

Action and Collision system
Except SGOs, all other entities have only two functions
1. Kriya / Act:
2. Prakriya / React

Kriya / Act:
Available to all objects
This function allows motion of objects and engine maps the region where this object is, similar to Octrees, but i myself invented it before i read anything about Space division. I was surprised that what i developed myself was invented by ID engine. :-) a long ago.

Prakriya / React:
Available to all objects except SGOs

This is a callback function, called by engine whenever a collision occurs.

below is the simplest format of this function with example of player colliding with a coin ( GO type object ):

Prakriya ( Instance of object which collided, Instance of object with which it collided )
{

switch( (Object with which it collided).TYPE ) {case CHITRA: // i.e GO
        if( (Object with which it collided).ID == ID_COIN )
                   give points, disable coin sprite and remove it,
                   and blah blah blah..............

     ...
}

This was the brief of my engine, i hope you have got many nice ideas, i know you might have got some. This design is so simple, of-course requires tweaks in special cases, but allows most of games to be developed.

I will post some techniques i designed for easier game development,
like Aayaam-Kriya / Space - action mapping. Do some actions when falana object comes inside dhimaka space. heheheh. ;-)

Know what API your/target phones support before deploying apps.

2011-06-24T14:34:00.003+05:30

As i am working on J2ME (started on 17 June 2011) and have ported 90% of my Greh Game Engine (GGE), so my games also. During conversion i wanted scalable image support and camera so needed any one of these APIs JSR-226 and JSR-184. I was trying to find whether my target devices supports them? In search of that i found this page, thought i should post it here:

SVG (JSR-226) compatible devices
http://www.jbenchmark.com/svg_devices.jsp

Below are specs of my phone:
http://www.mobilerated.com/nokia-5230-nuron-specifications.html

It supports both, even S40 Phones of range Nokia 2700c also support. So we can write games and apps using these APIs.

You have to take specs from the vendor's site: example below is spec for Nokia 2760 in APIs section

http://www.developer.nokia.com/Devices/Device_specifications/2760

But i also have the MIDP 2.0 game canvas based sprite with scaling i found on a forum.

// Scaling algorithm, blind copied after googling
public int[] reescalaArray(int[] ini, int x, int y, int x2, int y2) {
        int out[] = new int[x2*y2];
        for( int yy = 0; yy < y2; yy++ ) {
            int dy = yy * y / y2;
            for( int xx = 0; xx < x2; xx++ ) {
                int dx = xx * x / x2;
                out[(x2*yy)+xx]=ini[(x*dy)+dx];
            }
        }
        return out;
    }

public Image resize_image( Image temp, final int newX, final int newY ) {
        //Need an array (for RGB, with the size of original image)
        int argb[] = new int[ temp.getWidth() * temp.getHeight() ];

        // Get the ARGB array of image into "argb"
        temp.getRGB( argb, 0, temp.getWidth(), 0, 0, temp.getWidth(), temp.getHeight() );

        // Call to our function and obtain ARGB2
        int argb2[] = reescalaArray( argb, temp.getWidth(), temp.getHeight(), newX, newY );

        // Create an image with that ARGB array
        Image temp2 = Image.createRGBImage( argb2, newX, newY, true );
        return temp2;
    }

How does it rescale:
Convert pixel's position of target image into percentage and them multiply by the desired scale width / height. Do this for each pixels of image.
[nth pixel x pos] in % = pixel's_x_position / image width
[nth pixel y pos] in % = pixel's_y_position / image height

scaled pixel position = (% pos) x (desired scale width and height)

I am back to my projects ;-)

2011-06-23T13:07:00.000+05:30

From many days i was wondering whether i should really start to make apps for making living and keep my software & physics projects development alive with more time. With job i could not do much of my own work. I have left job, i wasn't even getting time for pending projects, how come start new one.

Now, from 18 May 2011, i worked on J2ME, ported 80% my Greh Game Engine (GGE) to it ;-). My desi ball game is running on my phone. Tested on, Samsung, Nokia S60 5th edition, Nokia S40.

Currently i am working / and might be working on these projects, depending upon time:
1. Desi Ball Game port to java phones. Including GGE.
2. Porting GGE and games using it to S60. collision and plugin system remained.
3. Porting GGE to Samsung Bada, OpenGL graphics and Box2D part already done. I created a client's games called Magnet Moo and Exit Sign using my game sprite and physics classes.
4. As GGE already works on Windows, Linux ( and variants). So most of games can be ported to many devices.

And my personal thought and experience, Why i hate Iphones.
IOS (Iphone, Ipad), It was a bad experience with Apple's devices, even MAC. I didn't liked Objective-C at all. Are we developers have to learn new languages whole life? Learn logic not programming syntaxes.

IOS API's are great, but the restriction of using their APIs every time is nonsense. If you go against it, your apps are not going to be sitting on Apple's app store. Great! you even can't write file explorers!, custom themes etc.What a facility offered by such costly device!

"IOS which is basically Unix, but you can't hack it". i must say if you want good gadget then go for Symbian, Android, Windows, Or at least apps which apple kicks out of app store but you know are great, get them after-all device is yours not Apple's.

Why i said above is because what you are going to purchase for Iphone, Ipad is what they should ship inbuilt. You don't get a dedicated sound recorder even after purchasing such a costly device as example. Think yourself!

Sites for finding alternatives for some specific software.

2011-05-30T15:47:00.001+05:30

Below is the site for finding alternative applications for an application. e.g. LMMS is opensource alternative for FruityLoops ( music composition software ). I love lmms ;-)

link: http://alternativeto.net/

another good page: http://www.osalt.com/

A very good collection of GIMP tutorials.

2011-05-30T11:00:00.001+05:30

I found this page while searching for gimp tutorials, this page contains many of tutorials you will find by googling.

http://tutorialblog.org/gimp-tutorials/

this one is also good.
http://www.tutorialhero.com/view-67-gimp_tutorials.php

Lots of Linux, OpenSource, games

2011-05-30T10:53:00.000+05:30

I was looking for some gimp tutorials and via pics i found this great Linux game collection site, this is a must visit for people demanding games on Linux distros. Below is the link:

http://www.playdeb.net/

SuperOS: A modified Ubuntu.

2011-05-27T16:25:00.002+05:30

I am just going to try this Linux ditro, just read about it. seems great and if it really solves the head ache of software installation and development then definitely this is what should become a standard Linux based OS. My main concern is with installation, ( and making portable apps ). But if you have to compile the app you need and can run even on future releases forever on other system as well then why not, this is a big point of switch.

below is the link:
http://hacktolive.org/wiki/Hacktolive.org

http://hacktolive.org/blog

Lots of Linux Links

2011-05-24T12:35:00.003+05:30

Lots of linux links, for every Linux lover / user this link is one of must visit. ;-)

http://www.linuxlinks.com/

http://loll.sourceforge.net/linux/links/Audio-Video/index.html

OpenGL and non OpenGL window/View in one application. ( currently IOS only )

2011-05-21T13:55:00.000+05:30

NOTE: this post covers how to get OpenGL and non-OpenGL views in one application for IOS, Iphone, Ipad etc.

Below is the link i found for the solution of the same:

http://gamesfromwithin.com/using-multiple-opengl-views-and-uikit

Portable Linux applications.

2011-05-20T11:21:00.000+05:30

After using Winpenpack, portableapps for winows i was trying to build my own collection of portable apps for Linux, but good news is that some people have already done that for us all. ;-)

Below is the link of the site where you can download Linux Portable apps.

http://portablelinuxapps.org/

If you are trying to make portable builds then you can do it by setting LD_LIBRARY_PATH to your apps dirwctory and then launching it via shell script. I have created a script which copies all the dependencies into your application's directory so that you build that a portable suit. You can find some important scripts in Linux label ( look right list of labels ).

A good article on 2D rotated rectangle collisions.

2011-05-20T11:03:00.001+05:30

This article is simple, short and easy. Below is the link for the tutorial.

Tutorial - 2D Rotated Rectangles Collision Detection
http://www.ragestorm.net/tutorial?id=22

But in case you don't want to use rotated collision, what i do, is to treat rotated rectangles as a 4 points polygons and do the simple point in polygon Or polygon-polygon test.

How to differentiate between rotation and pinch gesture?

2011-05-11T11:50:00.006+05:30

I am very happy today that i finally figured out how Iphone SDK's ( GesturesViewController, UIGestureRecognizerDelegate ) differentiates between a rotation gesture and a pinch gesture. I figured it out yesterday viewing their sample. Here is what is does internally

Firstly You take two current points and two old points and just decide your gesture by their first movement/difference.

static char m_predicted_gesture_type = 0;

// float dx/dy = DIFFERENCE_BETWEEN_CURRENT_AND_LAST_TOUCH_POINT;
// dx/dy must be mode to +ve value only.

if( dx != 0.0f && dy == 0.0f && !m_predicted_gesture_type ) {

m_predicted_gesture_type = 1; // predicting gesture to be a rotation gesture.

gesture_type = ROTATION_GESTURE;

}

else if( dy > 1.0f && dx == 0.0f && !m_predicted_gesture_type ) {

m_predicted_gesture_type = 1; // predicting gesture to be a pinch gesture.

gesture_type = PINCH_GESTURE;

if( distance_bw_points > last_distance_bw_points ) {

coefficient_scale = 0.01f; // zoom in

}

else if( distance_bw_points < last_distance_bw_points ) {

coefficient_scale = -0.01f; // zoom out

}

m_predicted_gesture_type variable tells that we have already predicted the gesture now just calculate zoom/rotation values by moving points.

in TouchesEnd( ) do m_predicted_gesture_type = 0; to clear our prediction as gesture is done.

m_predicted_gesture_type saves the state of your predicted gesture and you clear it in touches end event.

Trick is: Just check what type of gesture it is at first movement then follow that gesture until touches end functions is called. no matter you actually pinch but take the input what it was predicted firstly. This is exactly what IPhone SDK recognizers do.

1. If user has moved fingers vertically, i.e. dy is non zero and dx is zero then this is a pinch gesture. and takes as pinch until touch end event occurs.

2. If user has moved fingers horizontally i.e. dx != 0.0f and dy == 0.0f then movements are taken as rotate gesture until touches end occurs.

EDIT:

Assume a threshold value which when crossed signifies specific gensture.
e.g. Assume a vertical band equal to width of our thumb, if user has crossed horizontal distance between them (fingers) more than the band's width take it as a rotation gesture and keep it as rotation until touches end occurs.

Smoother motion using Interpolation.

2011-03-16T12:59:00.001+05:30

I found this page last year (2010) and would like to recommend as must read if you are related to physics motion by programming.

LINK: http://sol.gfxile.net/interpolation/

What are UV / ST texture coordinates and UV mapping ?

2011-01-11T13:28:00.006+05:30

I know many of you might be having trouble in understanding what UV/ST are. I too had during beginning of OpenGL texturing. Before eating too much time its just:

(U,V) = (X,Y) of texture.

U = X pixel position of image / image width ;
V = Y pixel position of image / image height ;

And we know how to cap something between 0 to 1 range. Just divide it by the maximum that's why we are dividing pixel position by width and height just to cap it between 0 to 1 range.

Now we do simple maths, multiply U value by 100 and we get pixel position in %age.
suppose U = 0.4 and V = 0.6, it simply means
40% width, and 60% height.

U is pointing to position = 0 + 40% of image width
V is pointing to position = 0 + 60% of image height

That is why texture coordinate system becomes
left = 0 (lowest width), right = 1 (max width)
bottom = 0 (lowest height), top = 1 (max height)

Image Source: = http://paulyg.f2s.com/graphics/uvexp.gif

EDIT:
Now what UV mapping is?
I'll try to explain in lame language.

Assume a triangle as your polygon data and a rectangular, balloon like, nonrigid sheet as texture, here we want to cover the triangle with desired portions of that sheet, what should we do in real world? Of-course we will try to stretch it around triangle in all possible ways, we can start from wherever we want but limitation is simple, we have got 3 points to staple that sheet. this is exactly what OpenGL does. It asks which part of the texture you want to be mapped into which vertex of polygon. We can't tell OpenGL that hey put this UV in center on the polygon!

That's why the higher the number of vertices we have in polygon the better mapping we can do.

But in actual programming, we can assign almost any UV to any vertex. That would make the triangle with unusual patterns. I haven't tested this :-), try this in 3D modelling programs like Blender if you wanna save your time and experiment quickly on UV mapping. Then export your simple mesh into OBJ format, which you can read on text editors as well.

The best resources for studying OpenGL, OpenGL ES

2011-01-11T13:07:00.004+05:30

I learned OpenGL in 2009 and completed my Greh game engine in mid 2010 with my own Game framework for menu, sounds, ai, collision etc.

However i would like to help others in their journey for OpenGL. I strongly recommend reading these resources instead of buying many books. Switching to resources too much without fully giving time to them just wastes time and demoralizes us.:-

1. OpenGL redbook: it's enough for studying OpenGL concepts. Click this link
2. The simplest and nicely described tutorial on OpenGL + shaders (i.e. covers OpenGL ES 2.0 also ).
Click this link pointer to http://duriansoftware.com/joe/
3. Nehe (Neon Helium) GL tutorials. Link
4. Going to learn about rendering models, UV mapping etc. Link
5. GLSL, OpenGL ES 2.0. Link
6. Good samples for some of important OpenGL techniques. Link
If you know more links then please let me know.

How to write an emulator?

2010-12-24T10:28:00.003+05:30

Well i was just thinking to write a NES emulator since 2008 but that time i could not start due to my game engine. But now after learning these tutorials i must say anyone can make emulators who understands Microprocessors.

Please go through these tutorials to learn emulation. The tutorial is well written, small and very understandable. I will also write tutorials the way i feel simple once i do my NSF player.

Link: http://codeslinger.co.uk/pages/blog/wordpress/

Last sunday was my first day i developed an Emulator!

2010-12-22T11:23:00.002+05:30

Last Sunday ( 19 Dec, 2010 ), i developed a CHIP8 emulator which i will release here. However most of code was from an already made emulator since i understood that i am going to repeat that work so to save time i didn't worked from scratch.

I love nes music so much and i wanted it to be played on my Nokia 5230 Nuron, S60 5th edition. I tried to find one NSF player for s60 but i could not. So i am studying Nintendo Sound Chip, APU ( Ricoh 2A03 ). Currently am working on PC version. I can play waveforms, no 6502 emulation yet. When i will develop it i will release it here and on Zophar.net, nesdev.parodius.com.

Dhananjay Fighter, a game i developed when my engine just begun to develop.

2010-11-29T11:09:00.006+05:30

Dhananjay Fighter, named with name of my cousin. But the person is actually me in desi dress and cargo pant.

I tried to give good parallax and little fun in the game. ( use V and B keys to throw weapons ).

That stage of My game engine (GGE) had no collision system and particle FX etc. it was on early build. But had GFX support. Please let me know how you find it. Now the game level has reached a lot of upgrades.

Now i can develop commercial standard games. But am busy in working on XAMP ( PHP, MySQL, Apache )

as i have got a project to do. When I’ll get time I’ll start my games again with speed.

Can anyone offer me GFX support i will give full credits to you in credits section. Please let me know if you can. ;-).

Download the game : Dhananjay Fighter

Screen shot:

Screen shot of my new game: i haven't named it yet.

Haxe ("hex") - A programming language that compiles to multiple binaries.

2010-11-22T15:03:00.001+05:30

Haxe, pronounced "Hex", is a programming language that can build flash(swf), Javascript, win32 exe, Linux(elf), mac binaries, Neko(neko not niko) binaries, php and more.

Using haxe we can build apps for windows, mac, Linux, Android(using Gamehaxe), Iphone(using Gamehaxe), flash, NekoVM etc. So why not start using tis language and build multiplatform apps. I have just started and
will be trying to port my GGE game engine.

Please Visit the site: http://haxe.org/

Lots of free Gimp Brushes.

2010-09-01T15:56:00.003+05:30

Main site:

http://www.junauza.com/2009/10/25-awesome-gimp-brush-sets-1000-free.html

I am using all those brushes which are royalty free in my artwork and game development.
Please visit these sites and download these nice collection of brushes.

You should visit this site for good collection of gimp brushes and for free.
I love most of brushes. Grab them now:

Right click & open the site in new tab:

http://hawksmont.com/blog/category/graphic_design/resources/gimp_brushes/

Inspirational music by Janne Sinisalo (Skiessi).

2010-07-31T11:02:00.003+05:30

I got inspired to use LMMS after hearing cute music by Janne Sinisalo (Skiessi).
Here is the link to his compositions:

http://lmms.sourceforge.net/lsp.php?action=browse&user=Skiessi

I thank him for creating such good musics. Why not you also give a try to LMMS, better would be to use LMMS on Linux. because on windows it's crashing hard.

I am enhancing my game engine.

2010-07-31T10:57:00.002+05:30

Now i am enhancing my game engine GGE to utilise Box2d, and my OpenGL surfaces, that means the engine will detach from ClanLib and will be portable even for J2SE or J2ME.

Current status:
1. Box 2d Implemented into a simple class that can be put into sprites.
2. GE is ported to SDL OpenGL.
3. Now the game can be ported to many Operating Systems beyond( Windows, Linux and Mac) like BeOS, Palm, Iphone, Android, Sega Dreamcast, and many more mentioned on www.libsdl.org. I will test Symbian or any of these OSes whenever i get access to any of these hardware. Currently win and Linux are on work.

I launched my first demo of my game, - Desi Ball Game -

2010-07-19T18:16:00.007+05:30

This is my first release of "Desi Ball Game" game using my GGE game engine. The game is a puzzle yet arcade action game. You have to keep thinking and also getting yourself away from enemies.

Its a ball game where you have to move the ball with arrow keys. The ball starts moving with response to a key and stops when it collides with any safe surface. There are lot of spikes, enemies to kill you. For more info why not play it!

* The Game is demo and i am working on adding more levels to make a full package. I am working on more games so get less time so please keep giving me your important feedback and bug reports.

There are some collision inaccuracies in the game that i will correct on later versions.

To play run play_ballgame_release.bat not the mge_release.exe binary.
Download link: Desi Ball Game ( updated on 26th July 2010 )

Current release: Desi Ball Game v0.10b

My IndiePub submission link: Desi Ball Game

Snapshot:

Releasing my LMMS music projects.

2010-07-18T13:28:00.004+05:30

So i have started to work on LMMS as my engine is taking rest for a while. Before i port my engine to J2ME, flash( not now ok ) i will be working on LMMS and GIMP and Blender.

Here are the links for lmms projects to prevent server load and to let you get the source of my music to edit and make remakes of it. Do let me know if you make remake or remix.

To use these files you should install LMMS 0.4.6 ( Linux Multimedia Studio ).
NOTE: some projects are incomplete and some channels are muted as i found them not fully suitable, please let me know if you rework on them.

meri_music_002.mmpz
meri_music_003.mmpz
meri_lmms_music_05.mmpz
meri_lmms_music_06.mmpz
meri_lmms_music_07.mmpz

NES remixes, some projects might be incomplete and with unsuitable samples too, hey just say thanks to me ok i am also helping and keeping NES alive!.

SpyHunter: (The game was created by SunSoft those who created Batman). ( It's Stage 2 Music)

More to come: :^) keep giving ,your imp. feedback and good ideas.
If you know some utilities for music console format conversion, remix, composition like nsf2midi, OpenMPT, soundclub etc small software then please let me know.

Desi Ball Game, 1st Game using my Greh Game Engine.

2010-07-17T11:59:00.002+05:30

Desi Ball Game

This is my 1st fully playable game that i have uploaded on http://www.indiepubgames.com, where a competition is going on for best indie developers hunt.

I am working hard on gfx and sound now as my game engine is complete beta stage. Am going to upload my games to my blog and sites.google.com page.

So my friends please keep visiting my sites and give me feedback on my games, game remakes, gfx, music, music remix etc. Am just crazy for music and my favorite NES games.

My profile page:
http://www.indiepubgames.com/profile/bindesh

Visit my graphics arts on my deviantart page.

2010-04-26T12:38:00.002+05:30

Visit my deviantart profile where i am posting my gfxarts.

http://bindesh.deviantart.com

A Gimp artwork for a jungle scene.

2010-04-16T16:30:00.001+05:30

One of my Gimp gfx work.

2010-04-06T16:43:00.001+05:30

Gimp, my first simple tutorial on making a multimedia button.

2010-04-05T12:38:00.000+05:30

Please download the pdf document from the link below
Download pdf

Mere GLOBAL_PATH bash scripts

2009-11-19T15:04:00.003+05:30

My bash scripts present in GLOBAL_PATH in my Linux ditro(Mandriva 2009). My scripts start with HL_ to seperate them from rest of my unowned scripts.

Download Link

Convert your text files into images

2009-11-19T14:58:00.002+05:30

Open your text files with IrfanView and save as image.

I always use IrfanView and GIMP for all my photo works. If you haven't tried them then please give one. ;-)

Mera 3D model format (similar to wavefront's Obj)

2009-11-19T14:31:00.007+05:30

Below is my python script for Blender 3D.

It exports mesh to my custom 3D format m3d(mera 3D, format).

Source download link:
Python script

CPP project source : Cmesh

My composed musics

2009-08-01T12:58:00.013+05:30

After 2 years i am releasing my composed music:
All are download links, please click and save them:

I've intentionally used low Bitrate for low audio quality:
Please mail me regarding any music you like and let me know there are people supporting my audio compositions.

Composed in 2010
meri_6_music.ogg ( low bitrate )
meri_music_05_choti_dhun.ogg
my_ejay7_music02.ogg
my_ejay7_music01.ogg
meri_music_03.ogg
meri_music_4_test_sample.ogg

In 2006 : (N/A)
~~Bindesh_musik_guitar_beat.ogg~~
~~Bindesh_techno.ogg~~
~~Bindesh_like_i_do.ogg~~
~~Bindesh_musik_club.ogg~~
~~Bindesh_musik_club2.ogg~~
~~Bindesh_musik_loathsome-fear.ogg~~

If you like these music just say thanks!

Copyright notice: These musics/songs can't be used for commercial purpose without author's permission.
*Don't hesitate to distribute among your friends, But No mass production Or fake content ownership. Be kind and put this website's link.

My Game Development

2009-07-23T18:28:00.013+05:30

Here are my 2D games, Please follow the link below:

~~http://sites.google.com/site/bindeshkumarsingh/games~~

Availlable on "game development" label in this blog.

My Super Mario ( NES ), Bharatiya remix

2009-07-23T18:24:00.004+05:30

Here is my own remix of Super Mario stage 1 music.
Mario_Bros_1.rar

Copyright Notice: No part of this music can be used for commercial purpose without author's permission.

Output audio through serial port. Serial Port Player v0.1

2009-01-15T00:00:00.013+05:30

Serial port player – serialplayer

This software lets us play audio through serial port.

Hardware requirement: (below values are for USB-to-serial chip)

female com port connector
resistors - 1k
capacitors 4.4 uF

For laptop, i used this hardware:-

USB serial converter. I am using Nokia 6600 pc data cable. Which is nothing but a prolific PL2303 usb-to-serial chip with cable utilizing only its TX, RX and GND pins.

Software requirement:

A Linux distro with gcc (GNU's compiler collection) for source compilation.
serialportplayer – binary OR source code.

[Illustration of project]

Raw audio data => serialportplayer => serial port => low pass filter => speaker(s).

Processing:

The software collects raw audio data and processes it according to serial port data transfer speed. The processed data is then output through serial port's TX pin. The processing includes oversampling and modulation (sigma-delta is recommended but current version of program doesn't uses it purely).

Raw data:

The data is raw audio. This raw audio data is extracted from audio files using audacity software as -

Run audacity
Open any audio file
Export that file into raw format.
the raw format must be :- unsigned 8 bit / sample, mono(1channel).

Please note down the samplerate of the original audio file and use it during serial play.

Using serialportplayer:

start your shell – e.g. Konsole, xterm
execute su command and give root's password.
Run serial port player as:- ./tplay OR ./serialportplayer
e.g. ./tplay humdum.raw 16000

if your system can't run the binary you can compile it from source:

cc –o serialplayer serialplayer.c

The following where the sources using which i accomplished the project:

Linux serial port how to (tldp.org) the Linux documentation project.
ttyplay: Project made before mine. It helped me a lot.
http://vivara.net/software/ttyplay/
http://hackaday.com/2005/10/25/audio-output-from-a-serial-port/

Any interested person must read about 1 bit audio and sigma-delta modulation.

Please connect 1k resistor to TX pin and capacitor in parallel to TX and GND pins. These values are for USB-to-Serial adapter. Use appropriate values for normal serial port at back of desktop pcs.

Download link: This link has tplay source and binary of ttyUSB, it uses USB-to-Serial device as serial port.

Download :serialportplayer.rar
Password: serialportplayer_homelabs

It Has Come To My Attention: Einstein points the way

2008-12-15T20:10:00.000+05:30

It Has Come To My Attention: Einstein points the way. What is electricity, magnetism and relativity inside a wire.

I recovered my quickly erased CDRW.

2008-10-23T16:17:00.004+05:30

Happened in 2006 August.
I had a CDRW which was the only source for my all projects as my hdd was crashed. I tried to find many software on net, found forensic sites but they were charging much money. Being a student, i wasn't able to produce that amount then i decided to search for software based recovery.

I found Isobuster, that wasn't capable of quick erased CDRW's data recovery. But i found a good software - Back2Life. I tried to recover the cd, using "force RW mode".
Hah! it recovered the table but wasn't recovering data as it was a demo version and limited to 64KB file recovery. It must have burned some part on the CDRW. I was disappointed b/c i had very less time, only few days to go. Then my mind lightened an idea and i again used Isobuster, hey! it recovered my data and i successfully saved my all projects. I know it could also help many of you.

That's why we say: Problem occurred for one person but gave solution to many.
Tip: Use back2life version > 2.3 and then use Isobuster.
Now TestDisk is my favorite data recovery program, it now offers optical media recovery.

Script which makes ldd's output clean.

2008-10-23T16:10:00.001+05:30

#!/bin/sh
ldd $1 | awk '{print "cp -f "$1" ./"}' > $1deps

My shell scripts

2008-10-23T16:00:00.003+05:30

Shell script which copies all the libraries (dependencies) into the application's folder:

#!/bin/sh
ldd $1 | grep -io "/[a-zA-Z]*.*so.* " > $1deps
cat $1deps | sed 's/^/cp -f /' > $1.one
rm -rfd ldd_libs ; mkdir ldd_libs
sed 's/$/ ldd_libs/' $1.one > $1depstocopy.sh
rm -f $1deps $1.one
sh $1depstocopy.sh
echo "Done. Now cleaning...."
echo "checkout ldd_libs directory."
rm -f $1depstocopy.sh

MyAudioPlayer_portable

2008-10-22T10:49:00.004+05:30

My updated portable version audio player - MyAudioPlayer_portable

Features:
Normal interface, module audio format, streaming media OGG, MP#, WAV etc
GUI same for both Linux and Windows. Mac version is not avail currently.

Download: MAP_portable.exe

http://purefixion.com/attention/2007/05/einstein-points-way.html

2008-10-08T16:30:00.001+05:30

http://purefixion.com/attention/2007/05/einstein-points-way.html

tips

2008-03-31T11:16:00.003+05:30

Quickly type the domain of a website:

On the address bar of your internet browser type :
site name followed by CTRL + ENTER. e.g. type google followed by ctrl+enter, browser automatically puts www.google.com

Similarily .org and .net can also be implemented.

CTRL + SHIFT + ENTER // For www.****.org
ALT + CTRL + ENTER // For www.****.net

This simple tip quickens the url entry in the browser.

How to boot your desired HDD/Partition without installing a bootloader entry in GRUB?

2008-02-14T23:57:00.005+05:30

Boot from a GRUB bootable HDD or USB drive. There are options below the menu.

Like 'e' to edit boot parameters, 'c' for command line. Select the 'c' option.

Now you will get prompt from grub. There are lots of command in grub. But we

have to use few. These are -

Boot Linux:-

1. "root (" followed by TAB key. It will list the available disks. Select your disk.

e.g. root (hd#

2. Now again press TAB key. You will get the list of partitions available. Select one.

e.g. root (hd0,5) . This will print the filesystem type [0x83 for ext2, ext3].
The format is - root (hd#,#) . # means your disk and partition number respectively.

hd0 - harddisk # 1, hd1 harddisk # 2 as set in your BIOS settings. To boot from

floppy disk use - root (fd#). Replace # with 0 or 1 i.e. Your floppy drive 0 for A, 1 for B

3. Now it's time to load Linux. Type kernel (hd#,#)/ press TAB key. You will see

the directory list. If you don't get anything means the filesystem isn't supported.

Follow step 2 to load a valid partition which lists the root ( / ) structure :-

bin boot dev etc home ........

kernel (hd#,#)/boot press tab key. it will list the contents of /boot. Now put your

kernel taking the name from the file list. e.g. -

kernel (hd0,5)/boot/vmlinuz (Press Enter). A message will appear

"image loaded at 0x????????". It means Linux is loaded at that address.

4. Now a ramdisk has to be loaded. To do this enter :-

initrd (hd#,#)/boot/ Press tab key to collect a file (usually) named initrd.img.

Enter path e.g.

initrd (hd0,5)/boot/initrd.img (press enter). Your Initial ramdisk is loaded

successfully.

5. We are now ready to boot. Enter "boot" and press enter.

By hitting enter GRUB just makes a simple call to Kernel. "jmp 0x????????"

e.g. of the real boot: TAB was pressed after root (hd0,

_____________________________________________________________

grub> root (hd1,

Possible partitions are:

Partition num: 0, Filesystem type is fat, partition type 0xc

Partition num: 4, Filesystem type unknown, partition type 0x82

Partition num: 5, Filesystem type is ext2fs, partition type 0x83

Partition num: 6, Filesystem type is ext2fs, partition type 0x83

Partition num: 7, Filesystem type is fat, partition type 0xb

Partition num: 8, Filesystem type is fat, partition type 0xb

grub> root (hd1,5)

Filesystem type is ext2fs, partition type 0x83

_____________________________________________________________

Boot Windows partition:-

1. root (hd#,#) checkout until you see fat filesystem.

2. chainloader (hd#,#)+1

3. boot (press enter). It jumps to the partition's boot sector.

root (hd#,#)

makeactive

chainloader +1

Another good option is to load desired GRUB's menu :-

we can directly load a config file to get the preset options of an already installed

GRUB. Here is how to do it. Search the partition which lists the Linux root

filesystem. After getting the correct path enter command as below :-

configfile (hd#,#)/boot/grub/menu.lst (PRESS ENTER).

It'll load the GRUB menu of that partition. The configuration file is usually

menu.lst. Now select the Operating System from available options.

I hope this will help you. Feel free to give me a comment, correction

or any idea to share.

Being a programmer i have written a small multi-bootable boot program

which offers the option to boot Windows XP, Windows 9x, DOS, small OSes

but not Linux Currently. May be in future i'll accomplish that too.

Hack #2: How to install rpms without executing them?

2008-02-08T15:00:00.005+05:30

A: RPMs are just compressed files with exact path settings.
Open rpm file with an archiving utility like "file-roller".

Please refer Hack #1 for setting up global path. Extract rpm to /home/global.

NOTE: This hack should be done only if your rpm is not installable
OR you don't want to affect your / structure OR for learning purpose.

Extract your rpm in /home/global. Better would be to have a partial extraction
i.e. extract files of usr folder in /usr and extract bin & lib in /home/global.
Binaries should be put in -/home/global/bin OR /home/global/usr/bin

And libraries in -
/home/global/lib OR /home/global/usr/lib

The files present in /usr/share contain resources used by the application.
so they must be copied in /usr. Now execute "ldconfig -v" to load the libraries
and at the list of files produced by the ldconfig command. Are there your *.so
files in the list with your custom lib paths? If not checkout the ld.so.conf.d
folder OR add the custom lib paths in /etc/ld.so.conf file. Presence of our lib
files in the list means they are loaded and we can execute the program we extr-
acted in /home/global. Now execute the program you extracted. If it asks for
some other so files then copy those files in /home/global/lib and execute
ldconfig. Re-execute the program. Do the same until it no more asks for *.so
files.

NOTE: This hack works correctly but must not be used for all the installations.

I am running wine, rar, ace, 7zip, realplayer and almost all compiled application
from this path. During compilation i use /home/global in the --prefix option.

TIP: To know what library files are required by a binary, execute :-
ldd PROGRAM_NAME

Linux,Hack #1: How to set custom bin, lib, usr path i.e. virtual installation folder?A: Linux, Hacks

2008-02-08T12:59:00.011+05:30

Hack #1: How to set custom bin, lib, usr path i.e. virtual installation folder?
A:
login as root, execute "su" command in your shell.
Provide the root's password. Create a folder "global" in /home.

mkdir /home/global

Creates directory.

chmod 777 /home/global

Grants access to all users. (Optional)

chgrp users /home/global

Makes the directory accessible by

"users" group. (optional) Optional actions

should be user specific due to

security / system issues. It's fine here.

Now create a file "mylibpath.conf" in "/etc/ld.so.conf.d" folder.
Edit the file by adding the paths of the folders containing *.so files.

Here they are
/home/global/lib
/home/global/usr/lib
/home/global/usr/local/lib.

Save the file. This option is much better than editing the file "etc/ld.so.conf"
These path indicate the folders which must be searched for library files (*.so files).
It's all done for setting up the directory structure. Now link up th bin directory
to every user as below.

ln -s /home/global/bin ~/bin  OR ln -s /home/global/bin /home/$USER/bin
Creates a soft link to /home/global/bin in ~/ OR /home/$USER
(~ means current user's home dir). $USER is current user's name.

Now create link of any executable in ~/bin and it will be globally executable.

Copy OR link your "*.so" files in /home/global/lib OR /home/global/usr/lib
OR /home/usr/local/lib

 NOTE: The usage of these lib path are not safe because they could conflict
with the root path OR any other trouble.

2007-12-25T03:16:00.000+05:30

Use any function present in a dll file without using programming / compiler.

Create a shortcut and edit it as give here.

rundll32.exe dll-file-name,function-name
Use depends.exe to get information about the functions present inside the dll file.
Get depends.exe from Windows XP cdrom, support tools directory.

Rescue tip - copy locked files.

2007-12-16T03:20:00.000+05:30

How to copy locked files in windows?
Disclaimer: This information is for rescue / educational purpose only! I can't be held responsible for any damage occurred due to it's use. BTW it has rescued many systems!
Recovery tools can be used to copy the locked files as they don't deal with the file handles, they have full access to the disk. I have successfully copied SAM from Windows which said to be an impossible task!

2007-12-16T02:19:00.001+05:30

Tips-Tricks:

Execute your favorite program while you install windows XP.

Press shift + F10 to open command prompt during windows Xp installation. cmd.exe will be launched, now launch taskmanager to manage your further activities like playing flash game, installing winamp. I haven't tested it on other windows. Read how i discovered this!! visit my incidents section.

I have traced the reason for it! It can serve a hack during installation!

Articles, Documents

2007-12-16T01:04:00.003+05:30

What are dll files? download
C questions - download
Everything about main() - download
What is static?

2007-12-12T03:26:00.004+05:30

Linux:

MyNESpad :- A program, Complete driver for WinXP is under development, to test a Nintendo Game pad connected to PC via Parallel port. Please read "nes pad to pc" in hardware section. Linux has inbuilt support for all the console game pads. Use gamecon on Linux.

Download: (Linux source and binary compiled on Live CD of Ubuntu.

http://sites.google.com/site/bindeshkumarsingh/data/NESPAD.rar

2007-12-12T03:06:00.001+05:30

Please visit:
http://sites.google.com/site/bindeshkumarsingh/windows

2007-12-12T02:25:00.000+05:30

Dos Applications:
1. Compfile: A file comparison utility.
2. GiveHex: Hex dump utility.
3. HexBin_Interconverter: It dumps the hex of any file and converts that hex file back into binary.
4. Run Length Compressor: Also known as RLE (run length encoding).
5. NoCopyNoRename: This program contains only 5 line code. The features it gives is unbelievable. The program doesn't work if it's selected path is changed (i.e. copied to other place) and if you rename it.
6. MiniBMPReader: Reads a bitmap and gives information.