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Enemy Invaders
Developer   EnemyBoss
GenreArcade
PlatformWindows
Downloads645

About: Enemy Invaders is a clone of the first Arcade hit, Space Invaders '78. This game uses many more moving sprites than breakout, these include the alien invaders, the bombs, the bullets, the occasional UFO, and of course, the gunship itself. Click here to play.

Game Info How To Play Downloads Comments


Description

From Invaders.java:


/* --------------------------------------------------------------------------
* ;j:
* D L:
* , L.
* .jLGGGLLLfjt;,: _:f Wj .
* ,tG ______________ E. jf
* , < ____ / K, t G
* f / / /___/ GjjG G
* iGW / /___ _______ f_____ ______________ __ ___
* :f / ____/ < ___ \ / __ \ < __ __ \ < \ / /
* ;D / / ____ / / / / / /_/__/ / / / / / / \ / /
* iE / /____/ / / / / / / /___ / / / / / / \ /
* ;DDLjijK <_____________/ <___> /___> \______> <___> <___> <___> / /
* . : _____________ K: :;jt / /
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* L / / / / Wf.
* .W / /___/ / ___Gi__ ______ ______
* ; / ____ < / ___ \ / ___> / ___>
* j WW / / / / / / / / \ < \ <
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* jW. ,E <_____________/ \ ______/ <______/ <______/
* ,, G GttfLGDKKW Ef,
* iK t ...... Copyright (c) 2005 Mujtaba Hasni
* jW D
* iDj http://enemyboss.net
* : enemyboss@gmail.com
*
*
*
* The MIT License
*
* Copyright (c) 2005 Mujtaba Hasni www.enemyboss.net
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* * * *
*
*
* -[ E N E M Y I N V A D E R S ]-
*
*
*
* ######
* ##########
* ############
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*
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* #
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*
*
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* #
* ###
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* #############
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*
*
* -={ R e v i s i o n H i s t o r y }=-
*
* Version 1.0a / Jun. 02 2005 / Alpha Release.
*
*
* -={ D e s c r i p t i o n }=-
*
* Enemy Invaders is a clone of the first Arcade hit, Space Invaders '78.
* This game uses many more moving sprites than breakout, these include the
* alien invaders, the bombs, the bullets, the occasional UFO, and of course,
* the gunship itself.
*
* Space invaders is a good exercise in basic sprite programming, and use of
* tick timers. I show a simple way to render bitmap images and fonts, which
* a re stored as literal Strings in the code. The game also uses the
* keyboard instead of the mouse.
*
* The Space Invader craze is legendary, which was only succeeded by pac-man
* fever three years later. The game came out before I was born, but my first
* experience playing Space Invaders was on the Commodore Vic-20. I think
* almost all gamers of my generation and before has played this game. And I
* haven't met anyone hadn't enjoyed the game back in the day. The game is a
* classic, period.
*
*
* -={ G a m e p l a y }=-
*
* 1. Use your gunship to destroy all the invaders before they reach the
* earth, while avoiding bombs they drop on you.
*
* 2. Defend yourself using the four energy shields or by nullifying bombs
* with your bullets. Your shields slowly drains energy as they're hit until
* they dissapear.
*
* 3. There are three types of aliens, worth 10, 20 and 30 points each.
*
* 4. Sometimes, a mysterious UFO will appear, shoot it to earn 150, 300 or
* even 500 bonus points!
*
* 5. Every 1000 points you earn will give you an extra life.
*
*
* -={ N o t e s }=-
*
* The "Energy" Shields
*
* The shields works differently from the arcade original. The shields fade
* away as they're being hit, instead of eroding. It would have been
* overly complex to do in Java, especially with doublebuffering.
*
* I imagine that the original game's code performed its collision
* detection against the colour of pixels. So whenever a bullet or bomb hit
* a shield, it would black-out blasted portions of the shield, allowing
* bullets and bombs to pass through.
*
* If I were working directly with a display buffer, this would be easy to
* implement. The Image class doesn't allow access to its pixels, and it
* would require the use of MemoryImageSource and PixelGrabber classes, or
* Java2's BufferedImage class.
*
* Images and Sounds, Credits
*
* The sound effects I believe were originally sampled from the analog
* circuits that the original Space invaders cabinet used. The actual .wav
* files were extracted from a sound pak found on the Space Invaders
* Didactic Emulator (SIDE) home page:
*
* http://www.ascotti.org/programming/side/side.htm.
*
* I needed bitmapped graphics so I encoded them as strings. The ASCII art
* is based on James Eibisch' Space Invaders QBASIC code. I also encoded a
* bitmap font. Doing this way also allows me to use the Graphics' class
* fill3DRect() method to make that scan-line effect.
*
* I encoded the graphics this way to make this file self contained. I
* imagine one could copy & paste this code from a newsgroup, compile it,
* and have a playable game. Its fine to play a game without sound
* effects but without graphics? I think not.
*
* Making It Easy
*
* I could have made this game much more simpler than this. For example, I
* could have loaded the sprites from GIFs, and use Java's own font
* rendering like ususal. The design could also be cleaner had I chose to
* create custom classes. Also, my game loop doesn't work purely into its
* seperate stages.
*
* I am trying to be serious with my code quality and readability. But I
* also decided to make code that was self contained, and use only the
* class already standard on the Java2 platform. It could use more work,
* but I think I've done the job.
*
* - mujtaba
*
* ---------------------------------------------------------------------------
*/



System Requirements

Java2 plug-in or Java2 SE SDK 1.4 or greater.


Screenshots

 
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