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Routines |
Prev: 25749 | Up: Map | Next: 25802 |
DE | Character's coordinates |
H | Character number (152-169) |
L | 101 |
25750 | INC L | Point HL at the destination x-coordinate |
25751 | LD A,E | A=character's current x-coordinate |
25752 | CP (HL) | Is the character at the destination? |
25753 | JR NZ,25765 | Jump if not |
25755 | LD L,96 | Byte 96 holds the character's animatory state |
25757 | BIT 0,(HL) | Is the character midstride? |
25759 | JP Z,25256 | Jump if not (finished) |
25762 | JP 25627 | Otherwise finish the stride |
The character hasn't reached his destination yet. Figure out his next move.
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25765 | LD A,D | A=character's y-coordinate |
25766 | CP 169 | 169=bottom floor |
25768 | LD A,(HL) | A=destination x-coordinate |
25769 | JP Z,25627 | Jump if the character is on the bottom floor |
The character is on the middle floor or the top floor. But which side of the wall?
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25772 | LD A,D | A=character's y-coordinate |
25773 | CP 155 | 155=top floor |
25775 | LD A,57 | 57=x-coordinate of the wall between the Map and Reading Rooms |
25777 | JR Z,25781 | Jump if the character is on the top floor |
25779 | LD A,38 | 38=x-coordinate of the wall between the White and Exam Rooms |
25781 | CP E | Is the character to the left of the wall? |
25782 | JR NC,25792 | Jump if so |
The character is on the right side of the wall.
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25784 | CP (HL) | Compare the wall's x-coordinate (in A) with the destination x-coordinate |
25785 | LD A,(HL) | A=destination x-coordinate |
25786 | JP C,25627 | Jump if the character doesn't need to go down the stairs |
25789 | JP 25590 | Send the character to the top of the staircase |
The character is on the left side of the wall.
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25792 | CP (HL) | Compare the wall's x-coordinate (in A) with the destination x-coordinate |
25793 | LD A,(HL) | A=destination x-coordinate |
25794 | JP NC,25627 | Jump if the character doesn't need to go down the stairs |
25797 | LD A,12 | 12=x-coordinate of the tops of the staircases at the left of the skool |
25799 | JP 25592 | Send the character to the top of the staircase |
Prev: 25749 | Up: Map | Next: 25802 |