PROGRAM ZSOL NO STANDARD PAGE HEADING.

DATA: NUMBER LIKE DATATYPE-INTEGER2.
DATA: DUMMY  LIKE DATATYPE-INTEGER2.
DATA: BEGIN OF CARDS OCCURS 52 ,
      ENTRY TYPE I,
      ROW TYPE I,
      COL TYPE I,
      VIS(1),
      END OF CARDS.
DATA: CARD_NUM TYPE I, SUIT_NUM TYPE I, SUIT(1), CARD(2), ROWS TYPE I.
DATA: BLANK(3) VALUE '***'.
DATA: NEXT-CARD(4) VALUE 'Next'.
DATA: RESTART(8) VALUE 'New game'.
DATA: REVEAL(6) VALUE 'Reveal'.
DATA: TEST_NUM TYPE I, TO_NUM TYPE I, MOVING_NUM TYPE I,
        PILE_NUM TYPE I.
DATA: CURR_C TYPE I, CURR_H TYPE I, CURR_S TYPE I, CURR_D TYPE I.
DATA: MOVING_SUIT(1), TO_SUIT(1), MOVING_CARD(2), TO_CARD(2),
  PILE_SUIT(1), PILE_CARD(2),MOVING_TYPE(1)    .
DATA: MOVING_ROW TYPE I, MOVING_COL TYPE I,
      TO_ROW TYPE I, TO_COL TYPE I, TEST_ROW TYPE I.
DATA: CURRENT_CARD TYPE I,
       MIN_CARD TYPE I , MAX_CARD TYPE I.
DATA: CURRENTFIELD(50).
DATA: DISC_C(3),DISC_H(3),DISC_S(3),DISC_D(3).
DATA: ROWS_OUT TYPE I, COLS_OUT TYPE I.


PERFORM SHUFFLE.
PERFORM SHOW_SCREEN.

AT LINE-SELECTION.
  GET CURSOR FIELD CURRENTFIELD.
  PERFORM PROCESS-INPUT.

*---------------------------------------------------------------------*
*       FORM SHUFFLE                                                  *
*---------------------------------------------------------------------*
*       ........                                                      *
*---------------------------------------------------------------------*
FORM SHUFFLE.
  MIN_CARD = 3.MAX_CARD = 24.
  CURR_C = -1.CURR_D = -1.CURR_H = -1.CURR_S = -1.
  DISC_C = 'CCC'.DISC_H = 'HHH'.DISC_S = 'SSS'.DISC_D = 'DDD'.
  NUMBER = SY-UZEIT MOD 1000.
  DO NUMBER TIMES.
    CALL FUNCTION 'RANDOM_I2'
         IMPORTING
              RND_VALUE = DUMMY.
  ENDDO.
  REFRESH CARDS. CLEAR CARDS. SY-TABIX = 0.
  WHILE SY-TABIX < 52.
*do 40 times.
    CALL FUNCTION 'RANDOM_I2'
         EXPORTING
              RND_MIN   = 0
              RND_MAX   = 51
         IMPORTING
              RND_VALUE = NUMBER.
    READ TABLE CARDS WITH KEY NUMBER TRANSPORTING NO FIELDS.
    IF SY-SUBRC <> 0.
      CARDS-VIS = 'n'.
      DESCRIBE TABLE CARDS LINES ROWS.
      CASE ROWS.
        WHEN 0.CARDS-VIS = 'y'.CARDS-ROW = 0.CARDS-COL = 0.
        WHEN 7.CARDS-VIS = 'y'.CARDS-ROW = 1.CARDS-COL = 1.
        WHEN 13.CARDS-VIS = 'y'.CARDS-ROW = 2.CARDS-COL = 2.
        WHEN 18.CARDS-VIS = 'y'.CARDS-ROW = 3.CARDS-COL = 3.
        WHEN 22.CARDS-VIS = 'y'.CARDS-ROW = 4.CARDS-COL = 4.
        WHEN 25.CARDS-VIS = 'y'.CARDS-ROW = 5.CARDS-COL = 5.
        WHEN 27.CARDS-VIS = 'y'.CARDS-ROW = 6.CARDS-COL = 6.
        WHEN 28.CARDS-ROW = 20.CARDS-COL = 0.
      ENDCASE.
      CARDS-COL = CARDS-COL + 1.
      CARDS-ENTRY = NUMBER.
      APPEND CARDS.
    ENDIF.
*enddo.
  ENDWHILE.
  CURRENT_CARD = MIN_CARD.
ENDFORM.

*---------------------------------------------------------------------*
*       FORM SHOW_SCREEN                                              *
*---------------------------------------------------------------------*
*       ........                                                      *
*---------------------------------------------------------------------*
FORM SHOW_SCREEN.
  ROWS_OUT = 1.
  COLS_OUT = 4.
  DO 7 TIMES.
    SKIP TO LINE ROWS_OUT.
    POSITION COLS_OUT.
    WRITE BLANK HOTSPOT.
    COLS_OUT = COLS_OUT + 4.
  ENDDO.
  LOOP AT CARDS.
    PERFORM MAKE_CARD.
    IF CARDS-ROW < 20.
      ROWS_OUT = CARDS-ROW + 1.
      SKIP TO LINE ROWS_OUT.
      COLS_OUT = CARDS-COL * 4.
      POSITION COLS_OUT.
      IF CARDS-VIS = 'n'.
        WRITE 'XXX' COLOR OFF INTENSIFIED OFF INVERSE OFF.
      ELSE.
        IF SUIT = 'D' OR SUIT = 'H'.
          WRITE: SUIT NO-GAP COLOR 6 INTENSIFIED INVERSE HOTSPOT,
                 CARD COLOR 6 INTENSIFIED INVERSE HOTSPOT.
        ELSE.
       WRITE: SUIT NO-GAP COLOR OFF INTENSIFIED OFF INVERSE OFF HOTSPOT,
             CARD COLOR OFF INTENSIFIED OFF INVERSE OFF HOTSPOT.
        ENDIF.
      ENDIF.
    ELSE.
      SKIP TO LINE 20.      COLS_OUT =  CARDS-COL  * 4.
      IF COLS_OUT > 48.
        SKIP TO LINE 21.
        COLS_OUT = COLS_OUT - 48.
      ENDIF.
      POSITION COLS_OUT.
      IF CARDS-COL = CURRENT_CARD.
        PILE_SUIT = SUIT.
        PILE_CARD = CARD.
        PILE_NUM = CARD_NUM.
        IF SUIT = 'D' OR SUIT = 'H'.
          WRITE: PILE_SUIT NO-GAP COLOR 6 INTENSIFIED INVERSE HOTSPOT,
                 PILE_CARD COLOR 6 INTENSIFIED INVERSE HOTSPOT.
        ELSE.
          WRITE: PILE_SUIT NO-GAP COLOR OFF INTENSIFIED OFF HOTSPOT,
                 PILE_CARD COLOR OFF INTENSIFIED OFF HOTSPOT.
        ENDIF.
      ELSE.
        IF CARDS-COL < CURRENT_CARD.
          WRITE 'XXX' COLOR OFF INTENSIFIED OFF INVERSE OFF.
        ENDIF.
      ENDIF.
    ENDIF.
  ENDLOOP.
  SKIP TO LINE 4. POSITION 40.WRITE: DISC_C
       COLOR OFF INTENSIFIED OFF INVERSE OFF HOTSPOT.
  SKIP TO LINE 4. POSITION 44. WRITE: DISC_D
       COLOR 6 INTENSIFIED INVERSE HOTSPOT.
  SKIP TO LINE 4. POSITION 48. WRITE: DISC_S
       COLOR OFF INTENSIFIED OFF INVERSE OFF HOTSPOT.
  SKIP TO LINE 4. POSITION 52. WRITE: DISC_H
       COLOR 6 INTENSIFIED INVERSE HOTSPOT.
  IF MIN_CARD > 0.
    SKIP TO LINE 23. POSITION 1. WRITE NEXT-CARD HOTSPOT.
  ENDIF.
  SKIP TO LINE 23. POSITION 20. WRITE RESTART HOTSPOT.
*  skip to line 23. position 40. write reveal hotspot.
  SKIP TO LINE 25. POSITION 1. WRITE CURRENTFIELD.
  SY-LSIND = 0.
ENDFORM.

*---------------------------------------------------------------------*
*       FORM PROCESS-INPUT                                            *
*---------------------------------------------------------------------*
*       ........                                                      *
*---------------------------------------------------------------------*
FORM PROCESS-INPUT.
  IF CURRENTFIELD = 'NEXT-CARD'.
    IF CURRENT_CARD = MAX_CARD.
      CURRENT_CARD = MIN_CARD.
    ELSE.
      CURRENT_CARD = CURRENT_CARD + 3.
      IF CURRENT_CARD > MAX_CARD.
        CURRENT_CARD = MAX_CARD.
      ENDIF.
    ENDIF.
    MOVING_CARD = SPACE.
    CURRENTFIELD = SPACE.
    PERFORM SHOW_SCREEN.
    EXIT.
  ENDIF.
  IF CURRENTFIELD = 'REVEAL'.
    LOOP AT CARDS.
      CARDS-VIS =  'y'.
      MODIFY CARDS.
    ENDLOOP.
    PERFORM SHOW_SCREEN.
    EXIT.
  ENDIF.
  IF CURRENTFIELD = 'RESTART'.
    PERFORM SHUFFLE.
    CURRENTFIELD = 'Restarting'.
    PERFORM SHOW_SCREEN.
    EXIT.
  ENDIF.
  IF MOVING_CARD = SPACE.
    IF CURRENTFIELD = 'CARD' OR CURRENTFIELD = 'SUIT'.
      CURRENTFIELD = SPACE.
      ROWS_OUT = SY-CUROW - 1.
      COLS_OUT = SY-CUCOL DIV 4.
      LOOP AT CARDS.
        IF CARDS-ROW = ROWS_OUT AND CARDS-COL = COLS_OUT.
          CURRENTFIELD = 'Moving '.
          PERFORM MAKE_CARD.
          MOVING_ROW = CARDS-ROW.
          MOVING_COL = CARDS-COL.
          MOVING_CARD = CARD.
          MOVING_SUIT = SUIT.
          MOVING_TYPE = 'm'.
          MOVING_NUM = CARD_NUM.
          CURRENTFIELD+8(1) = SUIT.
          CURRENTFIELD+9(2) = CARD.
        ENDIF.
      ENDLOOP.
    ELSE.
      IF CURRENTFIELD = 'PILE_CARD' OR CURRENTFIELD = 'PILE_SUIT'.
        MOVING_CARD = PILE_CARD.
        MOVING_SUIT = PILE_SUIT.
        MOVING_TYPE = 'p'.
        MOVING_NUM = PILE_NUM.
        CURRENTFIELD = 'Moving pile card'.
        CURRENTFIELD+17(1) = PILE_SUIT.
        CURRENTFIELD+18(2) = PILE_CARD.
      ELSE.
        CURRENTFIELD = SPACE.
      ENDIF.
    ENDIF.
  ELSE.
    IF CURRENTFIELD = 'CARD' OR CURRENTFIELD = 'SUIT' OR
           CURRENTFIELD = 'BLANK'.
      ROWS_OUT = SY-CUROW - 1.
      COLS_OUT = SY-CUCOL DIV 4.
      TEST_ROW = -1.
      IF CURRENTFIELD = 'BLANK'.
        TO_COL = COLS_OUT.
        TO_ROW = ROWS_OUT - 1.
        IF MOVING_CARD = 'K'.
          PERFORM MOVE_CARD.
        ELSE.
          CURRENTFIELD = 'Can only move K to blank'.
          MOVING_CARD = SPACE.
        ENDIF.
      ELSE.
        LOOP AT CARDS.
          IF ( CARDS-ROW >= TEST_ROW AND CARDS-ROW < 20 )
                 AND CARDS-COL = COLS_OUT.
            TEST_ROW = CARDS-ROW.
            PERFORM MAKE_CARD.
            TO_COL = CARDS-COL.
            TO_ROW = CARDS-ROW.
            TO_CARD = CARD.
            TO_SUIT = SUIT.
            TO_NUM = CARD_NUM.
          ENDIF.
        ENDLOOP.
        IF TO_COL <> MOVING_COL OR MOVING_TYPE = 'p'.
          IF
             ( ( MOVING_SUIT = 'D' OR MOVING_SUIT = 'H' ) AND
               ( TO_SUIT = 'D' OR TO_SUIT = 'H' ) )
           OR
             ( ( MOVING_SUIT = 'C' OR MOVING_SUIT = 'S' ) AND
               ( TO_SUIT = 'S' OR TO_SUIT = 'S' ) ).
            CURRENTFIELD = 'Can only put black on red or red on black'.
            MOVING_CARD = SPACE.
          ELSE.
            TEST_NUM = TO_NUM - 1.
            IF TEST_NUM = MOVING_NUM.
              PERFORM MOVE_CARD.
            ELSE.
              CURRENTFIELD = 'Can only put on next higher card'.
              MOVING_CARD = SPACE.
            ENDIF.
          ENDIF.
        ELSE.
          CURRENTFIELD = 'Can only move to another column'.
          MOVING_CARD = SPACE.
        ENDIF.
      ENDIF.
    ELSE.
      IF CURRENTFIELD(4) = 'DISC'.
        TO_SUIT = CURRENTFIELD+5(1).
        IF MOVING_TYPE = 'p'.
        ELSE.
          TEST_ROW = -1.
          LOOP AT CARDS.
            IF CARDS-COL = MOVING_COL AND
                    CARDS-ROW > TEST_ROW AND CARDS-ROW < 20.
              TEST_ROW = CARDS-ROW.
              PERFORM MAKE_CARD.
              MOVING_SUIT = SUIT.
              MOVING_CARD = CARD.
              MOVING_ROW = CARDS-ROW.
              MOVING_COL = CARDS-COL.
              MOVING_NUM = CARD_NUM.
            ENDIF.
          ENDLOOP.
        ENDIF.
        IF MOVING_SUIT = TO_SUIT.
          CASE MOVING_SUIT.
            WHEN 'C'. TEST_NUM = CURR_C + 1.
            WHEN 'H'. TEST_NUM = CURR_H + 1.
            WHEN 'D'. TEST_NUM = CURR_D + 1.
            WHEN 'S'. TEST_NUM = CURR_S + 1.
          ENDCASE.
          IF TEST_NUM = MOVING_NUM.
            PERFORM DISCARD_CARD.
            CASE MOVING_SUIT.
              WHEN 'C'. CURR_C = CURR_C + 1.
              WHEN 'D'. CURR_D = CURR_D + 1.
              WHEN 'S'. CURR_S = CURR_S + 1.
              WHEN 'H'. CURR_H = CURR_H + 1.
            ENDCASE.
          ELSE.
            CURRENTFIELD = 'Can only discard on next lower card'.
            MOVING_CARD = SPACE.
          ENDIF.
        ELSE.
          MOVING_CARD = SPACE.
          CURRENTFIELD = 'Can only discard on same suit'.
        ENDIF.
      ELSE.
        MOVING_CARD = SPACE.
        CURRENTFIELD = SPACE.
      ENDIF.
    ENDIF.
  ENDIF.
  PERFORM SHOW_SCREEN.
ENDFORM.
*---------------------------------------------------------------------*
*       FORM MAKE_CARD                                                *
*---------------------------------------------------------------------*
*       ........                                                      *
*---------------------------------------------------------------------*
FORM MAKE_CARD.
  SUIT_NUM = CARDS-ENTRY DIV 13 .
  CASE SUIT_NUM.
    WHEN 0.SUIT = 'D'.
    WHEN 1.SUIT = 'H'.
    WHEN 2.SUIT = 'C'.
    WHEN 3.SUIT = 'S'.
  ENDCASE.
  CARD_NUM = CARDS-ENTRY MOD 13.
  CASE CARD_NUM.
    WHEN 0.CARD = 'A'.
    WHEN 1.CARD = '2'.
    WHEN 2.CARD = '3'.
    WHEN 3.CARD = '4'.
    WHEN 4.CARD = '5'.
    WHEN 5.CARD = '6'.
    WHEN 6.CARD = '7'.
    WHEN 7.CARD = '8'.
    WHEN 8.CARD = '9'.
    WHEN 9.CARD = '10'.
    WHEN 10.CARD = 'J'.
    WHEN 11.CARD = 'Q'.
    WHEN 12.CARD = 'K'.
  ENDCASE.
ENDFORM.
*---------------------------------------------------------------------*
*       FORM MOVE_CARD                                                *
*---------------------------------------------------------------------*
*       ........                                                      *
*---------------------------------------------------------------------*
FORM MOVE_CARD.
  IF CURRENTFIELD <> 'BLANK'.
    CURRENTFIELD = 'Moving xxx to'.
    MOVE MOVING_SUIT TO CURRENTFIELD+7(1).
    MOVE MOVING_CARD TO CURRENTFIELD+8(2).
    MOVE TO_SUIT TO CURRENTFIELD+14(1).
    MOVE TO_CARD TO CURRENTFIELD+15(2).
  ELSE.
    CURRENTFIELD = 'Starting emtpy column'.
  ENDIF.
  IF MOVING_TYPE = 'p'.
    MOVE 'from pile' TO CURRENTFIELD+18.
    LOOP AT CARDS.
      IF CARDS-ROW = 20 AND CARDS-COL = CURRENT_CARD.
        CARDS-COL = TO_COL.
        CARDS-ROW = TO_ROW + 1.
        CARDS-VIS = 'y'.
      ENDIF.
      IF CARDS-ROW = 20 AND CARDS-COL > CURRENT_CARD.
        CARDS-COL = CARDS-COL - 1.
      ENDIF.
      MODIFY CARDS.
    ENDLOOP.
    CURRENT_CARD = CURRENT_CARD - 1.
    MAX_CARD = MAX_CARD - 1.
    IF MAX_CARD < MIN_CARD.
      MIN_CARD = MIN_CARD - 1.
      MAX_CARD = MIN_CARD.
    ENDIF.
    IF CURRENT_CARD < 1.
      CURRENT_CARD = MIN_CARD.
    ENDIF.
  ELSE.
    LOOP AT CARDS.
      IF CARDS-COL = MOVING_COL AND
       ( CARDS-ROW >= MOVING_ROW AND CARDS-ROW < 20 ).
        CARDS-COL = TO_COL.
        CARDS-ROW = TO_ROW + 1 + CARDS-ROW - MOVING_ROW.
        MODIFY CARDS.
      ENDIF.
    ENDLOOP.
    TEST_ROW = MOVING_ROW - 1.
    LOOP AT CARDS.
      IF CARDS-COL = MOVING_COL AND CARDS-ROW = TEST_ROW.
        CARDS-VIS = 'y'.
        MODIFY CARDS.
      ENDIF.
    ENDLOOP.
  ENDIF.
  MOVING_CARD = SPACE.
ENDFORM.
*---------------------------------------------------------------------*
*       FORM DISCARD_CARD                                             *
*---------------------------------------------------------------------*
*       ........                                                      *
*---------------------------------------------------------------------*
FORM DISCARD_CARD.
  MOVE 'Discarding' TO CURRENTFIELD.
  MOVE MOVING_SUIT TO CURRENTFIELD+13(1).
  MOVE MOVING_CARD TO CURRENTFIELD+14(2).
  CASE TO_SUIT.
    WHEN 'C'.
      DISC_C+1(2) = MOVING_CARD.
    WHEN 'D'.
      DISC_D+1(2) = MOVING_CARD.
    WHEN 'H'.
      DISC_H+1(2) = MOVING_CARD.
    WHEN 'S'.
      DISC_S+1(2) = MOVING_CARD.
  ENDCASE.
  IF MOVING_TYPE = 'p'.
    MOVE 'from pile' TO CURRENTFIELD+18.
    LOOP AT CARDS.
      IF CARDS-ROW = 20 AND CARDS-COL = CURRENT_CARD.
        CARDS-COL = 0.
      ENDIF.
      IF CARDS-ROW = 20 AND CARDS-COL > CURRENT_CARD.
        CARDS-COL = CARDS-COL - 1.
      ENDIF.
      MODIFY CARDS.
    ENDLOOP.
    CURRENT_CARD = CURRENT_CARD - 1.
    MAX_CARD = MAX_CARD - 1.
    IF MAX_CARD < MIN_CARD.
      MIN_CARD = MIN_CARD - 1.
      MAX_CARD = MIN_CARD.
    ENDIF.
    IF CURRENT_CARD < 1.
      CURRENT_CARD = MIN_CARD.
    ENDIF.
  ELSE.
    LOOP AT CARDS.
      IF CARDS-ROW = MOVING_ROW AND CARDS-COL = MOVING_COL.
        CARDS-COL = 0.
        MODIFY CARDS.
      ENDIF.
    ENDLOOP.
    TEST_ROW = MOVING_ROW - 1.
    LOOP AT CARDS.
      IF CARDS-COL = MOVING_COL AND CARDS-ROW = TEST_ROW.
        CARDS-VIS = 'y'.
        MODIFY CARDS.
      ENDIF.
    ENDLOOP.
  ENDIF.
  MOVING_CARD = SPACE.
ENDFORM.