RISC OS Chain Reaction
14
--------- Version 1.38  February 1991 ---------

This is Chain Reaction,  like the previous non-
RISC OS version  it is public domain.

It works best in any  screen mode with at least
sixteen colours, i.e. MODES 2,9,10,12,13,14,15,
16,17,24.


------------- General Information -------------

Chain Reaction is played  on  an eight by eight
grid with 2 to 4 players.  The aim is to be the
last player left on the board.  Players take it
in turns to place one piece on the board.


                                               

-------------------- Rules --------------------

The following are the only rules:

1) A piece can only be placed on a square which
   is either  unoccupied  or  occupied  by  the
   player whose turn it is.
2) Corner squares have a critical mass of two.
3) Edge squares have a critical mass of three.
4) Centre squares have a critical mass of four.
5) If the number of pieces in ANY square at ANY
   time  exceeds  the  critical  mass  of  that
   square, then it will explode.  When a square
   explodes,  one piece is added to each of the
   neighbouring squares,  and  that  number  of
   pieces   are  removed  from   the  exploding
   square.



---------------- Menu  Options ---------------- 

The  following  options  are available from the
menu:

1. New game - Fairly obvious I think                     
2. Players  - Alter number of players
3. Type     - Alter type of player
4. Quit     - Quit program
               
---------------- Player Types -----------------

Several different types of player are available
one  human  and  seven  computer  players.  The
computer players are arranged  roughly in order
of  sophistication  and  Arc 1  should be  much
easier to beat than Arc 7. 



-------------- Reaction$Options ---------------
The system variable Reaction$Options has been
set up to allow limited customisation of the 
game.
This five character variable has the format :
  Char 1 : Number of players
  Char 2 : Player 1 type \  
  Char 3 : Player 2 type  \ H   Human or
  Char 4 : Player 3 type  / 1-7 computer player 
  Char 5 : Player 4 type /
------------- Programming History -------------

v0.01 08/04/90 Non RISC OS version written.
v1.10 24/01/91 WIMP interface written by Robert
               Turner.
      01/02/91 Game written with same options
               as v0.01.
v1.20 04/02/91 Removed  flicker of board  using
               "WIMP_UpdateWindow"  after  help
               from Robert.
v1.30 05/02/91 Position icons added and seventh
               computer player.
v1.35 16/02/91 Grey background and icons.
v1.38 23/02/91 System variable Reaction$Options
               added.





------------- Programming Notes ---------------
                            
Author...........Steve Bosman
Idea.............Mark Martin
WIMP interface...Robert Turner
Playtesting......Luke Bosman (v0.01)
                 Robert Turner
                 Clive Whitehand


---------------- Public Domain ----------------
This program is public domain, it may be freely
distributed,  provided  the  code has  not been
altered,  and that it is not  sold  for  profit
- apart from,  raising  money  for  charities -
naturally a small  charge  may be made to cover
costs.  If you  enjoyed playing  Chain Reaction
please send a contribution to me.  You may even
get an updated version by return.

If you find any bugs,  or have  any suggestions
for improvement  -  in particular  new computer
players  -  please do  not hesitate  to contact
me...
 





 Steve Bosman             Steve Bosman
 110 Isambard Close       116 Flemming Avenue
 Cowley              or   Leigh-on-sea
 Middlesex                Essex
 UB8 3TX                  SS9 3AX

 ^^ until 30/06/91 ^^     ^^^^^ anytime ^^^^^



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