# File : camel.bush

    #!/usr/local/bin/bush

    -- CAMEL
    --
    -- Originally written in BASIC by David Ahl, Creative Computing
    -- From his book 'BASIC COmputer Games'
    -- At last check, Dave is at http://www.swapmeetdave.com
    --
    -- BUSH port by Ken O. Burtch
    -- March 2003

    pragma restriction( no_external_commands );

    reply   : character;
    thirst  : integer := 4;     -- commands until dying by thirst
    canteen : natural := 6;     -- drinks left, start with 6
    dist    : integer := 0;     -- distance travelled
    pdist   : integer := 0;     -- distance pygmies travelled
    pdelay  : natural := 0;     -- pygmy delay
    camel   : integer := 0;     -- camel health
    scene   : positive;

    type a_player_status is (alive, captured, dead, won);
    status : a_player_status := alive;

    put_line( "CAMEL" );
    put_line( "Originally by David Ahl, Creative Computing" );
    new_line;
    put( "WOUD YOU LIKE INSTRUCTIONS? (Y/N) " );
    reply := inkey;
    put_line( reply );
    if reply = 'y' or reply = 'Y' then
       put_line( "  Welcome to Camel.  The object is to travel 200 miles" );
       put_line( "across the great GOBI Desert." );
       put_line( "A tribe of knocked keed pygmies will be chasing you.  You will" );
       put_line( "be asked for commands every so often." );
       new_line;
       put_line( "C O M M A N D S :" );
       put_line( "1# Drink form your canteen" );
       put_line( "2# Ahead modrate speed" );
       put_line( "3# ahead full speed" );
       put_line( "4# stop for the night" );
       put_line( "5# Status check" );
       put_line( "6# Hope for help" );
       new_line;
       put_line( "You have one quart of water which will last you six drinks." );
       put_line( "You must renew your water supply completely at an oases." );
       put_line( "You get a half a quart if found by help." );
       put_line( "If help does not find you after command six, you lose." );
    end if;
    put_line( "Good luck and good cameling!!!" );
    new_line;

    put_line("You are in the middle of the desert at an oasis." );

    loop
      loop
        if reply /= '5' then -- didn't move on status
           thirst := @-1;
           if thirst = 1 then
              put_line( "-------------------W A R N I N G------------GET A DRINK" );
           elsif thirst < 0 then
              put_line( "You ran out of water......sorry chum!!!" );
              status := dead;
           end if;
           pdelay := @+1;
           if pdelay > 3 then
              pdist := @+integer(numerics.rnd(10))-1;
              if pdist >= dist then
                 put_line( "The pygmies have captured you.  Camel and people soup is their" );
                 put_line( "favorite dish !!!!!!" );
                 status := dead;
               end if;
           end if;
        end if;
        if status /= dead then
           put( "The pygmies are " );
           put( pdist );
           put_line( " miles behind you." );
           put( "You have travelled " );
           put( dist );
           put_line( " miles altogether." );
        end if;
        if status = captured then
           new_line;
           put_line( "You have a new choice of sub-commands:" );
           put_line( "#1 TAKE A DRINK" );
           put_line( "#7 ATTEMPT AN ESCAPE" );
           put_line( "#8 WAIT FOR PAYMENT" );
           put_line( "Your sub-command? " );
           reply := inkey;
           put_line( reply );
           case reply is
           when '1' =>
                canteen := @-1;
           when '7' =>
                if numerics.rnd(2) = 1 then
                   put_line( "CONGRADULATIONS, YOU SUCCESSFULLY ESCAPED!!!!!!!!" );
                   status := alive;
                else
                   put_line( "You were mortally wounded by a pig stabber while escaping." );
                   status := dead;
                end if;
           when '8' =>
                if numerics.rnd(4) = 1 then
                   put_line( "Your ransom has been paid and you are free to go." );
                   status := alive;
                else
                   put_line( "The local sultain is collecting......just wait.................." );
                end if;
           when others => null;
           end case;
        elsif status = dead then
           put_line( "You died in the desert." );
           scene := numerics.rnd( 5 );
           case scene is
           when 1 => put_line( "The National Camel's Union is not attending your funeral!!!" );
           when 2 => put_line( "Your body was eaten by vultures and imported canninbals !!!" );
           when 3 => put_line( "The local sheik now uses your skull for a change purse !!!!" );
           when 4 => put_line( "People with little intellegence should stay out of the desert!" );
           when 5 => put_line( "TURKEYS SHOULD FLY, NOT RIDE CAMELS !!!!!!!!!!!!!!!!!!!!!!" );
           when others =>
              put( "error: unexpected scene: '" );
              put( scene );
              put_line( "'" );
           end case;
           exit;
        elsif status = won then
           put_line( "You win, a party is being given in your honor............" );
           put_line( "............The pygmies are planning to attend..............." );
           exit;
        else
          new_line;
          put( "What is your command? " );
          reply := inkey;
          put_line( reply );
          case reply is
          when '1' =>
               if canteen = 0 then
                  put_line( "The canteen is empty" );
               else
                  thirst := 4;
                  canteen := @-1;
                  put_line( "BETTER WATCH FOR AN OASES  !" );
               end if;
          when '2' =>
               camel := @+1;
               if camel > 7 then
                  status := dead;
                  put_line( "You dirty rapscallion!  You ran your poor camel to DEATH!!" );
               else
                  dist := @+integer(numerics.rnd(10));
                  put_line( "Your camel likes this pace." );
               end if;
          when '3' =>
               camel := @+3;
               if camel > 7 then
                  status := dead;
                  put_line( "You dirty rapscallion!  You ran your poor camel to DEATH!!" );
               else
                  dist := @+2*integer(numerics.rnd(10));
                  new_line;
                  put_line( "Your camel is burning across the desert sands." );
               end if;
          when '4' =>
               camel := 0;
               put_line( "Your camel thanks you !" );
          when '5' =>
               put( "Your camel has " );
               put( 7-camel );
               put_line( " good days left." );
               put( "You have " );
               put( canteen );
               put_line( " drinks left in your canteen." );
               put( "You can go " );
               put( thirst );
               put_line( " commands without drinking." );
          when '6' =>
               if numerics.rnd(10) = 1 then
                  thirst := 4;
                  canteen := 3;
                  put_line( "Help has found you in a state of unconsciousness." );
               else
                  status := dead;
               end if;
          when others => null;
          end case;

          if status = alive and reply /= '5' then
             scene := numerics.rnd( 1000 );
             if scene in 1..50 then
                new_line;
                put_line( "WILD BERBERS HIDDEN IN THE SAND HAVE CAPTURED YOU." );
                put_line( "Luckily the local sheik has agreed to their ransom" );
                put_line( "demands.....but........watch for the pygmies!!!!!!" );
                status := captured;
             elsif scene in 51..240 then
                thirst := 4;
                canteen := 6;
                new_line;
                put_line( "You have arrived at an oases--------Your camel is filling " );
                put_line( "your canteen and eating figs." );
             elsif scene in 241..277 then
                dist := @+integer(numerics.rnd(19)-10);
                new_line;
                put_line( "You have been caught in a sandstorm......GOOD LUCK!" );
                put( "Your new postion is " );
                put( dist );
                put_line( " miles so far!" );
             elsif scene in 278..312 then
                pdist := @+1;
                new_line;
                put_line( "Your camel hurt his hump." );
                put_line( "Luckily the pygmies were footweary  !!!" );
             end if;
           end if;
         end if;
      end loop;

      new_line;
      put( "Want a new camel and a new game? " );
      reply := inkey;
      put_line( reply );
      if reply = 'y' or reply = 'Y' then
         thirst := 4;
         canteen := 6;
         dist := 0;
         pdist := 0;
         pdelay := 0;
         camel := 0;
         status := alive;
      else
         put( "------------------" );
         put( "     CHICKEN     " );
         put_line( "------------------" );
         exit;
      end if;
    end loop;
    command_line.set_exit_status( 0 );