Diff for /gforth/sokoban.fs between versions 1.1 and 1.8

version 1.1, 1995/10/26 22:48:42 version 1.8, 2007/12/31 18:40:24
Line 1 Line 1
 \ sokoban - a maze game in FORTH  \ sokoban - a maze game in FORTH
   
   \ Copyright (C) 1995,1997,1998,2003 Free Software Foundation, Inc.
   
   \ This file is part of Gforth.
   
   \ Gforth is free software; you can redistribute it and/or
   \ modify it under the terms of the GNU General Public License
   \ as published by the Free Software Foundation, either version 3
   \ of the License, or (at your option) any later version.
   
   \ This program is distributed in the hope that it will be useful,
   \ but WITHOUT ANY WARRANTY; without even the implied warranty of
   \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   \ GNU General Public License for more details.
   
   \ You should have received a copy of the GNU General Public License
   \ along with this program. If not, see http://www.gnu.org/licenses/.
   
 \ Contest from Rick VanNorman in comp.lang.forth  \ Contest from Rick VanNorman in comp.lang.forth
   
 \ SOKOBAN  \ SOKOBAN
Line 13 Line 30
 \ is shown below.  \ is shown below.
   
 \ program is ANS FORTH with environmental dependency of case-insensitiv  \ program is ANS FORTH with environmental dependency of case-insensitiv
 \ source. Tested with gforth and bigFORTH  \ source. Tested with gforth, bigFORTH and pfe
   
 \ really uses "dump" terminal: No PAGE, no AT-XY to speed things up  \ bell (7) is replaced with "Wuff!" ;-)
 \ Even bell (7) is replaced with "Wuff!" ;-)  
 \ (this is a german joke)  \ (this is a german joke)
 \ I don't like the keyboard interpreting CASE-statement either, but  \ I don't like the keyboard interpreting CASE-statement either, but
 \ was to lazy to use a table.  \ was to lazy to use a table.
Line 29  Create maze  1 cells allot /maze 25 * al Line 45  Create maze  1 cells allot /maze 25 * al
 Variable mazes   0 mazes !  \ root pointer  Variable mazes   0 mazes !  \ root pointer
 Variable soko    0 soko !   \ player position  Variable soko    0 soko !   \ player position
 Variable >maze   0 >maze !  \ current compiled maze  Variable >maze   0 >maze !  \ current compiled maze
 >maze off  
   
 \ score information  \ score information
   
Line 42  Variable score     0 score !  \ total nu Line 57  Variable score     0 score !  \ total nu
     here mazes rot 1 ?DO  @  LOOP  !      here mazes rot 1 ?DO  @  LOOP  !
     0 , 0 , here >maze ! 0 , ;      0 , 0 , here >maze ! 0 , ;
 : count-$ ( addr u -- n )  0 rot rot  : count-$ ( addr u -- n )  0 rot rot
     bounds ?DO  I c@ [char] $ = -  LOOP ;      over + swap ?DO  I c@ [char] $ = -  LOOP ;
 : m: ( "string" -- )  \ add a level line (top first!)  : m: ( "string" -- )  \ add a level line (top first!)
     -1 parse tuck 2dup count-$ >maze @ 1 cells - +!      -1 parse tuck 2dup count-$ >maze @ 1 cells - +!
     here swap move dup allot      here swap move dup allot
Line 58  Variable score     0 score !  \ total nu Line 73  Variable score     0 score !  \ total nu
   
 : .maze ( -- )  \ display maze  : .maze ( -- )  \ display maze
     0 0 at-xy  .score      0 0 at-xy  .score
     cr  maze-field bounds      cr  maze-field over + swap
     DO  I /maze type cr  /maze chars  +LOOP ;      DO  I /maze type cr  /maze chars  +LOOP ;
   
 : find-soko ( -- n )  : find-soko ( -- n )
Line 99  Variable score     0 score !  \ total nu Line 114  Variable score     0 score !  \ total nu
   
 : play-rule ( addr1 u1 addr2 u2 offset -- flag )  : play-rule ( addr1 u1 addr2 u2 offset -- flag )
     >r 2swap r@  apply-rule?      >r 2swap r@  apply-rule?
     IF  r> apply-rule! true  ELSE  rdrop 2drop false  THEN ;      IF  r> apply-rule! true  ELSE  r> drop 2drop false  THEN ;
   
 \ player may move up, down, left and right  \ player may move up, down, left and right
   
Line 120  Variable score     0 score !  \ total nu Line 135  Variable score     0 score !  \ total nu
         S" &."  S" .&"  r@ play-rule  IF  r> soko +!  EXIT  THEN          S" &."  S" .&"  r@ play-rule  IF  r> soko +!  EXIT  THEN
         S" &* " S" .&$" r@ play-rule          S" &* " S" .&$" r@ play-rule
               IF  r> soko +!  1 rocks +! -1 score +!  EXIT  THEN                IF  r> soko +!  1 rocks +! -1 score +!  EXIT  THEN
         -1 moves +!  rdrop  ;          S" &$." S" .@*" r@ play-rule
                 IF  r> soko +! -1 rocks +!  1 score +!  EXIT  THEN
           -1 moves +!  r> drop  ;
   
 1            move: soko-right  1            move: soko-right
 -1           move: soko-left  -1           move: soko-left
Line 155  Variable score     0 score !  \ total nu Line 172  Variable score     0 score !  \ total nu
             [char] C OF  soko-right false  ENDOF              [char] C OF  soko-right false  ENDOF
   
             [char] q OF  true              ENDOF              [char] q OF  true              ENDOF
         ENDCASE          false swap  ENDCASE
     UNTIL ;      UNTIL ;
   
 \ start game with "sokoban"  \ start game with "sokoban"
   
 : sokoban ( -- )  : sokoban ( -- )
     1 level IF  play-loop ." Game finished!"  THEN ;      page 1 level IF  play-loop ." Game finished!"  THEN ;
           
 001 new-maze  001 new-maze
 m:     #####  m:     #####

Removed from v.1.1  
changed lines
  Added in v.1.8


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