Added BattleShips
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Battleships/README.md
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Battleships/README.md
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# Battleships
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CP/M port of the Unix game.
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Copyright:
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* bs.c - original author: Bruce Holloway
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* salvo option by: Chuck A DeGaul
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* with improved user interface, autoconfiguration and code cleanup
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* by Eric S. Raymond <esr@snark.thyrsus.com>
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* v1.2 with color support and minor portability fixes, November 1990
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* v2.0 featuring strict ANSI/POSIX conformance, November 1993.
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* v2.1 for Linux, October 1994.
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* Slipstreamed in fixes to make it gcc -Wall clean, May '95.
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* fairly seriously hacked for Hitech C and CP/M, rjm 95/8/14
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I found it as part of the ZCN repository: https://github.com/jamesots/zcn
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The C source has been modified for VT100 compatibility and some minor
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changes have been made by me (Anna Christina Naß <acn@acn.wtf>.
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``bs.com`` is the compiled binary.
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See the ``*.txt`` files for more information.
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## Modes
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* ``-b`` selects a "blitz" variant
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* ``-s`` selects a "salvo" variant
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* ``-c`` permits ships to be placed adjacently
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The "blitz" variant allows a side to shoot for as long as
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it continues to score hits.
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The "salvo" game allows a player one shot per turn for
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each of his/her ships still afloat. This puts a premium
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scoring hits early and knocking out some ships and also
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makes much harder the situation where you face a superior
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force with only your PT-boat.
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## Keys
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To position your ships: move the cursor to a spot, then type the first letter of a ship
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(using CAPITAL letters) type to select it, then type a direction ([hjkl] or [4862]),
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indicating how the ship should be pointed.
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You may also type a ship letter followed by `r' to position it randomly, or type `R' to
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place all remaining ships randomly.
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Navigation and aiming keys:
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yz k u 7 8 9
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\|/ \|/
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h-+-l 4-+-6
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/|\ /|\
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b j n 1 2 3
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| Key | Action | Key | Action |
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| ----- | ------------------------ | --------- | ------------------------ |
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| h / 4 | move left | y / z / 7 | move up+left |
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| l / 6 | move right | b / 1 | move down+left |
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| j / 2 | move down | u / 9 | move up+right |
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| k / 8 | move up | n / 3 | move down+right |
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| r | place this ship randomly | R | place all ships randomly |
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| ^L | screen redraw | Q | quit game |
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## Compiling
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HiTech C has been used to compile it, but it needs a lot of free memory (TPA).
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For compiling, I used the command ``c bs.c`` in CP/M.
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Battleships/bs.c
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Battleships/bs.c
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Battleships/bs.com
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Battleships/bs.com
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Battleships/esr.txt
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Battleships/esr.txt
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BS 2.0
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Battleships is an intrinsically silly game, but I couldn't resist fixing this
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sucker. It now has a purely visual interface (you place ships and call for
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shots by moving the cursor around the board using the standard yuhjklbn keys).
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The default game now disallows placement of ships so that they touch. A new
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-c option is available to force the older behavior.
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I also removed the `seemiss' option (now always on) and `ask' (which is only
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useful for cheating). And I ifdefed out the ditsy opening screen; if you want
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it back, compile with -DPENGUIN. One strike against featureitis...
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The code now lints as clean as the broken SysV curses lint library will let it.
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Some #ifdefs in the code should result in the right things being done for
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BSD or USG systems. They key off A_UNDERLINE. If you're using the Linux
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ncurses library, tell the makefile.
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This was probably a waste of a day or so. But what the hack -- rewriting the
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strategy robot as an FSM was fun, and maybe the interface will set a good
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example for the next guy.
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<*** FLAME ON ***>
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People who write termcap games that require you to enter #@!!#$! coordinates
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rather than doing the natural pick-and-place with cursor motions should be
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stuffed in suits and condemned to write COBOL for the rest of their days...
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<*** FLAME OFF ***>
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O.K., I feel better now that I've got that off my chest...
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November 1993: I've added function key support, and ANSI/POSIXized the code.
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Eric S. Raymond
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esr@snark.thyrsus.com
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(WWW: http://www.ccil.org/~esr/home.html)
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Battleships/readme.txt
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This is a version of Battleships played on a 10x10 grid, with you
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playing against the computer. There's a reasonable amount of onscreen
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help, so you should be able to figure out how to work it pretty
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quickly.
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It's a port of a Unix curses version hacked by a few different people.
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A formatted version of the man page (documentation) is given below,
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and the 'readme' from the last person to hack it is in 'esr.txt'.
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-Rus.
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BATTLESHIPS(6) BATTLESHIPS(6)
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NAME
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bs - battleships game
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SYNOPSIS
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bs [ -b | -s ] [ -c ]
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DESCRIPTION
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This program allows you to play the familiar Battleships
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game against the computer on a 10x10 board. The interface
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is visual and largely self-explanatory; you place your
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ships and pick your shots by moving the cursor around the
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`sea' with the rogue/hack motion keys hjklyubn. If your
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UNIX has a modern (non-BSD) curses, your arrow keys will
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also work.
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Note that when selecting a ship to place, you must type
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the capital letter (these are, after all, capital ships).
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During ship placement, the `r' command may be used to
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ignore the current position and randomly place your cur-
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rently selected ship. The `R' command will place all
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remaining ships randomly. The ^L command (form feed, ASCII
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12) will force a screen redraw).
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The command-line arguments control game modes.
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-b selects a `blitz' variant
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-s selects a `salvo' variant
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-c permits ships to be placed adjacently
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The `blitz' variant allows a side to shoot for as long as
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it continues to score hits.
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The `salvo' game allows a player one shot per turn for
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each of his/her ships still afloat. This puts a premium
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scoring hits early and knocking out some ships and also
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makes much harder the situation where you face a superior
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force with only your PT-boat.
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Normally, ships must be separated by at least one square
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of open water. The -c option disables this check and
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allows them to close-pack.
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The algorithm the computer uses once it has found a ship
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to sink is provably optimal. The dispersion criterion for
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the random-fire algorithm may not be.
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AUTHORS
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Originally written by one Bruce Holloway in 1986. Salvo
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mode added by Chuck A. DeGaul (cbosgd!cad). Visual user
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interface, `closepack' option, code rewrite and manual
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page by Eric S. Raymond <esr@snark.thyrsus.com> August
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1989. Keypad support and ANSI/POSIX conformance, November
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'93. See http://www.ccil.org/~esr/home.html for updates,
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also other software and resources by ESR.
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Nov 15 1993 1
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