%%HP: T(3)A(R)F(.);
@ Reversi (Othello), program by Paul Dale
@ Game invented by Martin Gardner
DIR
  PLAY
    \<< SETUP "You first?" 4 DISS
      WHILE GETK DUP 13 <
      REPEAT DROP
      END
      IF 13 ==
      THEN SWAPC
      END
      WHILE 1 FC?C
      REPEAT BD 5 R\->S GETN SWAP DROP 1 == 'PMOV' 'CMOV' IFTE SCOR
        IF 8 FS?C
        THEN
          IF 2 FS?
          THEN 1 SF
          ELSE 2 SF
          END
        ELSE 2 CF
          IF CCT PCT + 64 ==
          THEN 1 SF
          END
        END
      END
      IF 3 FC?
      THEN PCT CCT -
        IF DUP 0 <
        THEN "I win"
        ELSE
          IF DUP 0 >
          THEN "You win"
          ELSE "Draw"
          END
        END 1 DISS ABS "by " SWAP \->STR + " disks" + 4 DISS
      END CLEAN
    \>>
  CLEAN
    \<< { PCT CCT BD OLDP } PURGE STOF 7 FREEZE
    \>>
  SETUP
    \<< RCLF 1 9
      FOR j j CF
      NEXT 2 DUP 'PCT' STO 'CCT' STO INITP NEWOB 'BD' STO { } 'OLDP' STO PICT
        PURGE { # 0h # 0h } PVIEW 1 8
      FOR j PICT # 60h j 6 * R\->B 2 \->LIST j 1 \->GROB GOR
      NEXT PICT { # 64h # 0h } "12345678" 1 \->GROB GOR 4 4 1 DRWP 4 5 -1 DRWP
        5 4 -1 DRWP 5 5 1 DRWP
    \>>
  SCOR
    \<< "  My total " CCT \->STR + 2 DISS "Your total " PCT \->STR + 3 DISS
    \>>
  INITP @ Code in ASC format
"C2A205E00066000F0000088888888880000000080000000080000000080001F0
008000F1000800000000800000000800000000888888888851C145B571A172E2
24946595819103739304758512221363A3F3E4F4023282D23484D40561B1E152
B42555A592C24474A2B22353B3E35464F142C41500FA22"
  SWAPC
    \<< 5 R\->S BD OVER GETN NEG ROT SWAP PUTN DROP
    \>>
  FLIPS
    \<< \-> x y
      \<< PICT x 4 * # 60h + y 6 * R\->B 2 \->LIST GROB 4 6 707020500000 GXOR
      \>>
    \>>
  DRWP
    \<< \-> x y c
      \<< PICT x 4 * # 60h + y 6 * R\->B 2 \->LIST c 1 ==
        GROB 4 6 705050700000 GROB 4 6 002070200000 IFTE REPL
      \>>
    \>>
  MKMOV
    \<< BD 5 R\->S GETN \-> x y j c
      \<< BD x y XY\->S c PUTN x y c DRWP 1
        IF c -1 ==
        THEN 'CCT'
        ELSE 'PCT'
        END STO+ -1 1
        FOR a -1 1
          FOR b 1 'j' STO
            WHILE x a j * + y b j * + XY\->S GETN c NEG ==
            REPEAT 1 j + 'j' STO
            END
            IF x a j * + y b j * + XY\->S GETN c ==
            THEN
              DO j 1 - 'j' STO
                IF x a j * + y b j * + XY\->S SWAP OVER GETN c NEG ==
                THEN SWAP c PUTN x a j * + y b j * + FLIPS 'PCT' 'CCT'
                  IF c -1 ==
                  THEN SWAP
                  END -1 STO+ 1 STO+
                ELSE SWAP DROP 7 SF
                END
              UNTIL 7 FS?C
              END
            END
          NEXT
        NEXT DROP
      \>> SWAPC
    \>>
  PUTN @ Code in ASC format
"CCD2065000147108174E78F1466013706135147C2135179110349C2A28A29030
F660030115D007135142164808C6DE5"
  GETN @ Code in ASC format
"CCD2056000137061358F14660147C2135179D015B030F902D2D6C4C4C2C4C4CA
344B2A2CA07135141CF142164808CD0808212D69DF1A9E"
  CMOV
    \<< "Thinking..." 4 DISS BD NEWOB DUP NEWOB MVGEN S\->XY
      IF DUP 0 <
      THEN DROP2 "I pass" 1 DISS SWAPC 8 SF
      ELSE DUP2 R\->C \->STR "My move " SWAP + 1 DISS MKMOV
      END
    \>>
  DISS
    \<< PICT SWAP # Ah * # 10h + # 0h SWAP 2 \->LIST ROT # 60h # Ah BLANK
      { # 0h # 0h } ROT 2 \->GROB GOR REPL
    \>>
  PMOV
    \<< 0 DUP \-> c1 c2
      \<< "Your move" 4 DISS
        WHILE 4 FC?C
        REPEAT GETK 'c1' STO
          IF c1
          THEN
            IF c1 8 >
            THEN 5 SF { OFF
              \<<
                IF BD 0 R\->S CKMOV
                THEN 4 SF 8 SF
                SWAPC
                ELSE 5 CF
                END
              \>>
              \<< 1 3 4 6 SF SF SF SF
              \>>
              \<<
                OLDP SIZE 4 ==
                \<< OLDP LIST\-> DROP PICT { # 0h # 0h } ROT REPL 'BD' STO
                  'PCT' STO 'CCT' STO { } 'OLDP' STO
                \>>
                \<< 5 CF
                \>> IFTE
              \>>
              \<< 5 CF
              \>>
              \<< 5 CF
              \>> } c1 8 - GET EVAL
            ELSE c1 \->STR 1 DISS GETK 'c2' STO c1 \->STR c2 \->STR + 1 DISS
              IF BD c1 c2 XY\->S CKMOV
              THEN 4 SF CCT PCT BD NEWOB PICT RCL 4 \->LIST 'OLDP' STO
                c1 c2 MKMOV
              END
            END
          END
          IF 4 FC? 5 FC?C AND
          THEN "Illegal" 1 DISS ERRBELL
          END
        END
      \>>
    \>>
  S\->XY
    \<< S\->R 11 - DUP 9 MOD SWAP 9 / IP
    \>>
  XY\->S
    \<< 9 * + 11 + R\->S
    \>>
  GETK
    \<< TICKS \-> sttme
      \<<
        DO
          IF TICKS sttme - B\->R 491520 >
          THEN OFF TICKS 'sttme' STO
          END
        UNTIL KEY
        END
      \>> KMAP SWAP POS
    \>>
  KMAP { 82 83 84 72 73 74 62 63 33 34 35 43 52 32 }
  R\->S
    \<< # 18CEAh SYSEVAL
    \>>
  S\->R
    \<< # 18DBFh SYSEVAL
    \>>
  CKMOV @ Code in ASC format
"CCD20451008F146608FB9760D20B0614713517EC213416915F0B0690A508528A
C0316A169D23184D715E090EB07150871D2160CF8AF6E651015E090E61713086
1D0349C2A26A00344B2A2DA8F2D760141070A142164808CD2CE7040D23087730
D23097E20D230A7520D2E67D10348FFFF7210347FFFF7700346FFFFD5132130C
013115F0862B0E690AB001CE90E00C013115F090A0080820890200133862F0E6
90AADCE6C00CE90ADCE6851013B92"
  MVGEN @ Code in ASC format
"CCD20A5200179E7E78FB97601C9D20B067090070A8F73560142164808CD51321
30C013115F0862B0E690AB001CE90E00C013115F090A0080820890200133862F
0E690AADCE6C00CE90ADCE6851F9C013115B09080015D01336AEF13713513417
414213016913610B14313117913710A74408AAB27E21AF41011321007B208AA9
175111119F8DE6EDFD21080111011BFACA1000111A13411B1351567D72580820
F902508522687B2125B8A2034660002D155716F17F152715170D880DE11BCBE7
E7134D014A968B611BCA130156090EBD841D2CE7F8ED2308768ED23097D7ED23
0A747ED2E67C6E348FFFF716E347FFFF765E346FFFF7B4E861786900D2641030
F8625030115C0DB1121311450111313117A179D23184D73104AF1D515B030F90
601E5170CF8AFAE01301906EECD69EF1614"
END