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Routines |
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Used by the routine at 27136.
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| 27647 | LD A,(25157) | Load Magic Knight's current y-coordinate into B... | ||||||
| 27650 | LD B,A | ... | ||||||
| 27651 | LD A,(25161) | Load A with Magic Knight's y-velocity | ||||||
| 27654 | ADD A,B | Add y-velocity to y-coordinate in A | ||||||
| 27655 | CALL 28625 | Divide A by eight, rounding down to nearest integer | ||||||
| 27658 | LD B,A | Load Magic Knight's y-coordinate (characters) into B | ||||||
| 27659 | LD A,(25156) | Load Magic Knight's current x-coordinate into A | ||||||
| 27662 | ADD A,4 | Add 4 to x-coordinate (to get point roughly quarter of the way through Magic Knight's total width) | ||||||
| 27664 | CALL 28625 | Divide A by eight, rounding down to nearest integer | ||||||
| 27667 | LD C,A | Load Magic Knight's current x-coordinate (characters) into C | ||||||
| 27668 | CALL 54162 | Point HL at terrain interaction data for character coordinates x=C, y=B | ||||||
| 27671 | BIT 4,(HL) | If bit 4 of Magic Knight's current position's terrain data (block is impassable vertically, upwards) is set then... | ||||||
| 27673 | JR NZ,27695 | ...kill Magic Knight's y-velocity and exit routine | ||||||
| 27675 | INC HL | Advance to next character block along in "terrain interaction data" | ||||||
| 27676 | BIT 4,(HL) | If bit 4 of this position's terrain data (block is impassable vertically, upwards) is set then... | ||||||
| 27678 | JR NZ,27695 | ...kill Magic Knight's y-velocity and exit routine | ||||||
| 27680 | DEC B | Advance y-coordinate by one character (to get point roughly three quarters of the way through Magic Knight's total width) | ||||||
| 27681 | CALL 54162 | Point HL at terrain interaction data for character coordinates x=C, y=B | ||||||
| 27684 | BIT 4,(HL) | If bit 4 of this position's terrain data (block is impassable vertically, upwards) is set then... | ||||||
| 27686 | JR NZ,27695 | ...kill Magic Knight's y-velocity and exit routine | ||||||
| 27688 | INC HL | Advance to next character block along in "terrain interaction data" | ||||||
| 27689 | BIT 4,(HL) | If bit 4 of this position's terrain data (block is impassable vertically, upwards) is set then... | ||||||
| 27691 | JR NZ,27695 | ...kill Magic Knight's y-velocity and exit routine | ||||||
| 27693 | XOR A | Set A to zero, as jump was not impeded | ||||||
| 27694 | RET | Return | ||||||
| 27695 | XOR A | Set Magic Knight's y-velocity to zero... | ||||||
| 27696 | LD (25161),A | ... | ||||||
| 27699 | LD A,1 | Set A to one | ||||||
| 27701 | OR A | Reset zero flag | ||||||
| 27702 | RET | Return | ||||||
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