Game Of Bases

Game idea

Screenshots

Goba in action

ver 399

ver 432

ver 475

ver 566

ver 678 menu

ver 678

crosshair

laser

Download

Source is available, too. The software is written in Objective Caml, and has successfully been compiled with these dependencies:

• Ocaml 3.09.2 (earlier versions probably work too). Available in Ubuntu as package ocaml-nox .
• Findlib 1.1.2pl1 (earlier versions probably work too). Available as ocaml-findlib in both Ubuntu and Debian.
• Ocamldsort 0.14.3. Available in Ubuntu and Debian as package ocamldsort .
• SDL 1.2. Available in Ubuntu as packages libsdl-image1.2-dev libsdl-mixer1.2-dev libsdl-ttf2.0-dev libsdl1.2-dev .
• OcamlSDL 0.7.2. Available in Ubuntu as package libsdl-ocaml-dev .
• Sexplib 2.8.2 (earlier versions probably work too). Not available in Ubuntu or Debian.
• Imagemagick for cropping some bitmaps for tile graphics. Available in Ubuntu and Debian as package imagemagick . You could just use the pre-extracted images in the binary package, though.

For the meta-server support you will need the following packages:

• OcamlNet (for Netclient, which is the component used for conversing HTTP)

In addition, these might be helpful if you want to modify certain aspects of the game:

• Blender 2.43, if you want to modify some of the graphics.
• Gimp 2.2.13, some of the bitmaps are in this format.
• Lmms 0.2.1-1.1, some sounds were generated with this
• Audacity 1.2.4b, and postprocessed with this
• Xemacs 21.4.19 - the editor of choice, with Tuareg-mode

I haven't tried Godi out, but it may be worth the trouble using it for those Ocaml-based packages, in case your distribution doesn't support any of the packages out-of-the-box. Atleast findlib, sdl-bindings and sexplib are available with it.

Change log

Version 683 (2007-04-01) (source/binaries)

• Added meta-server support. (Currently uses hardcoded http://modeemi.cs.tut.fi/~flux/update.cgi.) Note: this means that without compiling the binary yourself, both the client and the server will attempt to connect the web site.
• Server can now be started in any port.
• Added capability to connect to any server (and port) from within the game UI.
• Added graphics for the bases, mines and projectiles.
• Added startup image and background image.
• Added crosshair-graphics to bombs.

Version 595 (2007-03-23) (source/binaries)

• Fixed laser network behavior.
• You can no longer restore full health/ammo/etc by reconnecting the client :-).
• Base can now launch a bomb attach! (angle+distance)
• Changed the way base laser works. Now, instead of fixed number of charges, it continuously recharges up to 10 seconds of blast time. The best performance of the laser can only be reached by using it continuously for atleast three seconds.
• Driving causes (very slight) damage to grass - enough to see common traffic patterns.
• Perhaps fixed mines not going away properly after detonation.
• Main view now displays relatively where the tanks are, when they are not visible in it.

Version 566 (2007-03-22) (source/binaries)

• Bases now have lasers! Aim with P, shoot with L.
• Added end-game view, where the player can view the whole map (after their base has been destroyed).
• Player can now join the game even if their base is destroyed.
• Also, bases can now actually be destroyed..
• Moved sound files into their own directory.
• Larger mine explosions with a nicer explosion pattern.
• Create slightly larger maps (100x100 instead of 80x80) with different parameters. MapGenerator can sometimes fail to find space for four players, in which case the server must be restarted (it'll bail out with an exception).
• It's easier to destroy mountains.
• Handle compile time dependencies better..

Version 485 (2007-03-19) (source/binaries)

• Fixed bug regarding turning tank too much counterclockwise

Version 475 (2007-03-19) (source/binaries)

• Better tile graphics (added lousy mountains, added softer edges around grass patches, added grass that covers tanks)
• Internally better (server uses object classes for maintaining object state).
• Tank orientation is now passed to server (looks better)
• Tanks are now controlled by turning and adjusting motor speed, not by pointing to the direction you want them to do. Similarly firing is now relative to tank orientation.
• Some performance improvements (created bitmaps are cached already in the map structure, not only via their construction pattern which requires doing a hash table lookup)

Version 437 (source/binaries)

• Fixed not being able to shoot enemy base (or rather, destroy it) (Source/binaries
• Tank view flashes red on damage

Version 431 (source/binaries)

• Fixed network jerkiness-effect
• Added (some) tile graphics
• Better internals (bitmap composition, uniform object identification for map elements and objects, better extracting and feeding back of state for objects, dropped redundant protocol messages..)
• Flashing mines (randomly)
• Bigger tank views, smaller base view

Version 397 (source/binaries)

• Better graphics
• Fixed bug that caused the game to increase cpu usage continuously
• Fixed some write error cases in server
• Apparently introduced some jerkiness to network play..
• Maps are now generated on server startup, instead of being loaded from map.txt (map.txt-support is gone at the moment)

Playing

First you start the server. It starts to listen in port 61753. The option 'Start server' in the game actually does nothing :).

Second you start the game. If your host doesn't match the ones hardcoded in the game (localhost and jolt.modeemi.cs.tut.fi) you'll need to enter the host name in the command line, as the first argument.

Now you're set to go! F1 provides keyboard help. The game doesn't yet say who's won or died, so you'll need to figure that out yourself..

Notes

• Enemy units cannot be destroyed if the enemy client is not connected.
• If you build from the source, you want to build and run the optimized version (goba.opt) of the game binary.
• Bug reports are appreciated. Especially helpful the bug reports are if you
  • Build the binary yourself
  • Use the byte-code binary (not the optionally produced .opt-variety)
  • Put OCAMLRUNPARAM=b to the environment
  to produce backtraces, in the event the bug manifests itself via an uncaught excaption.