|
Routines |
| Prev: 38344 | Up: Map | Next: 38455 |
|
Used by the routine at 38344. Sets the attribute byte in the buffer at 23552 for one of the six cells (in three rows of two) occupied by or under Willy's sprite, or kills Willy if the cell contains a nasty. On entry, C holds either 15 if the cell is in the top two rows, or Willy's y-coordinate if the cell is in the bottom row.
|
||||||||||
| 38430 | LD A,(32928) | Pick up the attribute byte of the background tile in the current room from 32928 | ||||||||
| 38433 | CP (HL) | Does this cell contain a background tile? | ||||||||
| 38434 | JR NZ,38447 | Jump if not | ||||||||
| 38436 | LD A,C | Set the zero flag if we are going to retain the INK colour in this cell; this happens only if the cell is in the bottom row and Willy's sprite is confined to the top two rows | ||||||||
| 38437 | AND 15 | |||||||||
| 38439 | JR Z,38447 | Jump if we are going to retain the current INK colour in this cell | ||||||||
| 38441 | LD A,(32928) | Pick up the attribute byte of the background tile in the current room from 32928 | ||||||||
| 38444 | OR 7 | Set bits 0-2, making the INK white | ||||||||
| 38446 | LD (HL),A | Set the attribute byte for this cell in the buffer at 23552 | ||||||||
| 38447 | LD A,(32955) | Pick up the attribute byte of the nasty tile in the current room from 32955 | ||||||||
| 38450 | CP (HL) | Has Willy hit a nasty? | ||||||||
| 38451 | JP Z,37046 | Kill Willy if so | ||||||||
| 38454 | RET | |||||||||
| Prev: 38344 | Up: Map | Next: 38455 |