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Routines |
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| 54569 | LD DE,13 | Load DE with 13 (as entries in complex state data are 13 bytes wide) | ||||||||||||||
| 54572 | LD IY,(34238) | Load start address of current level's complex state data into IY | ||||||||||||||
| 54576 | LD A,(IY+0) | Load A with room index for current IY entity | ||||||||||||||
| 54579 | CP 255 | If this is not 255 (i.e. end marker)... | ||||||||||||||
| 54581 | JR NZ,54585 | ...then skip ahead to 54585 | ||||||||||||||
| 54583 | SCF | Set carry flag | ||||||||||||||
| 54584 | RET | Return | ||||||||||||||
| 54585 | LD A,(IX+0) | If room of entity at IX is not the same as room of entity at IY... | ||||||||||||||
| 54588 | CP (IY+0) | ... | ||||||||||||||
| 54591 | JR NZ,54662 | ...then advance IY to next entity | ||||||||||||||
| 54593 | BIT 5,(IY+10) | If current entity at IY has its is-being-carried flag set... | ||||||||||||||
| 54597 | JP NZ,54662 | ...then advance IY to next entity | ||||||||||||||
| 54600 | LD A,(IY+8) | If current entity at IY has a class which is the same as the entity at IX... | ||||||||||||||
| 54603 | CP (IX+8) | ... | ||||||||||||||
| 54606 | JR Z,54662 | ...then advance IY to next entity | ||||||||||||||
| 54608 | BIT 7,A | If entity at IY has its spans-full-depth flag set... | ||||||||||||||
| 54610 | JR NZ,54620 | ...then skip over depth check to 54620 | ||||||||||||||
| 54612 | LD A,(IY+1) | If entity at IY has a depth which is not the same as the depth of the entity at IX... | ||||||||||||||
| 54615 | CP (IX+1) | ... | ||||||||||||||
| 54618 | JR NZ,54662 | ...then advance IY to next entity | ||||||||||||||
| 54620 | LD A,(IY+11) | If entity at IY has its impassable/pushable-rightwards flag reset... | ||||||||||||||
| 54623 | AND 32 | ... | ||||||||||||||
| 54625 | JP Z,54662 | ...then advance IY to next entity | ||||||||||||||
| 54628 | LD A,(IX+7) | If the right side of entity at IX... | ||||||||||||||
| 54631 | INC A | ... | ||||||||||||||
| 54632 | CP (IY+5) | ...is not immediately to the left of the left side of the entity at IY... | ||||||||||||||
| 54635 | JR NZ,54662 | ...then advance IY to next entity | ||||||||||||||
| 54637 | LD A,(IX+6) | If the bottom of the entity at IX... | ||||||||||||||
| 54640 | CP (IY+4) | ...is above the top of the entity at IY... | ||||||||||||||
| 54643 | JR C,54662 | ...then advance IY to next entity | ||||||||||||||
| 54645 | LD A,(IY+6) | If the bottom of the entity at IY... | ||||||||||||||
| 54648 | CP (IX+4) | ...is above the top of the entity at IX... | ||||||||||||||
| 54651 | JR C,54662 | ...then advance IY to next entity | ||||||||||||||
| 54653 | XOR A | Set A to zero to reset carry flag | ||||||||||||||
| 54654 | LD (34258),IY | Store pointer to current entity at 34258 | ||||||||||||||
| 54658 | LD A,(IY+8) | Load A with class of entity at IY | ||||||||||||||
| 54661 | RET | Return | ||||||||||||||
| 54662 | ADD IY,DE | Advance IY pointer to next entity in complex state data block | ||||||||||||||
| 54664 | JR 54576 | Loop back to 54576 | ||||||||||||||
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