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Routines |
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Adds one to the day count at $5BB9, which is kept in binary-coded decimal for printing. Reaching day 40 ends the game (game_over); otherwise the new number is printed and copied to the screen, and the sun's window redrawn.
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| inc_days | C419 | LD HL,$5BB9 | days + 1, in BCD | |
| C41C | LD A,(HL) | |||
| C41D | ADD A,$01 | |||
| C41F | DAA | |||
| C420 | LD (HL),A | |||
| C421 | CP $40 | forty days: game over | ||
| C423 | JP Z,game_over | |||
| C426 | CALL print_days | copy the 16 by 8 pixel patch holding the number, at pixel (120, 0), to the screen | ||
| C429 | LD BC,$0078 | |||
| C42C | CALL blit_2x8 | |||
| C42F | JP display_frame | redraw the window with the new sun | ||
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