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Routines |
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| 54666 | LD DE,13 | Load DE with 13 (as entries in complex state data are 13 bytes wide) | ||||||||||||||
| 54669 | LD IY,(34238) | Load start address of current level's complex state data into IY | ||||||||||||||
| 54673 | LD A,(IY+0) | Load A with room index for current IY entity | ||||||||||||||
| 54676 | CP 255 | If this is not 255 (i.e. end marker)... | ||||||||||||||
| 54678 | JR NZ,54682 | ...then skip ahead to 54682 | ||||||||||||||
| 54680 | SCF | Set carry flag | ||||||||||||||
| 54681 | RET | Return | ||||||||||||||
| 54682 | LD A,(IX+0) | If room of entity at IX is not the same as room of entity at IY... | ||||||||||||||
| 54685 | CP (IY+0) | ... | ||||||||||||||
| 54688 | JR NZ,54760 | ...then advance IY to next entity | ||||||||||||||
| 54690 | BIT 5,(IY+10) | If current entity at IY has its is-being-carried flag set... | ||||||||||||||
| 54694 | JP NZ,54760 | ...then advance IY to next entity | ||||||||||||||
| 54697 | LD A,(IY+8) | If current entity at IY has a class which is the same as the entity at IX... | ||||||||||||||
| 54700 | CP (IX+8) | ... | ||||||||||||||
| 54703 | JP Z,54760 | ...then advance IY to next entity | ||||||||||||||
| 54706 | BIT 7,A | If entity at IY has its spans-full-depth flag set... | ||||||||||||||
| 54708 | JR NZ,54718 | ...then skip over depth check to 54620 | ||||||||||||||
| 54710 | LD A,(IY+1) | If entity at IY has a depth which is not the same as the depth of the entity at IX... | ||||||||||||||
| 54713 | CP (IX+1) | ... | ||||||||||||||
| 54716 | JR NZ,54760 | ...then advance IY to next entity | ||||||||||||||
| 54718 | LD A,(IY+11) | If entity at IY has its impassable/pushable-leftwards flag reset... | ||||||||||||||
| 54721 | AND 16 | ... | ||||||||||||||
| 54723 | JP Z,54760 | ...then advance IY to next entity | ||||||||||||||
| 54726 | LD A,(IX+5) | If the left side of entity at IX... | ||||||||||||||
| 54729 | DEC A | ... | ||||||||||||||
| 54730 | CP (IY+7) | ...is not immediately to the right of the right side of the entity at IY... | ||||||||||||||
| 54733 | JR NZ,54760 | ...then advance IY to next entity | ||||||||||||||
| 54735 | LD A,(IX+6) | If the bottom of the entity at IX... | ||||||||||||||
| 54738 | CP (IY+4) | ...is above the top of the entity at IY... | ||||||||||||||
| 54741 | JR C,54760 | ...then advance IY to next entity | ||||||||||||||
| 54743 | LD A,(IY+6) | If the bottom of the entity at IY... | ||||||||||||||
| 54746 | CP (IX+4) | ...is above the top of the entity at IX... | ||||||||||||||
| 54749 | JR C,54760 | ...then advance IY to next entity | ||||||||||||||
| 54751 | XOR A | Set A to zero to reset carry flag | ||||||||||||||
| 54752 | LD (34258),IY | Store pointer to current entity at 34258 | ||||||||||||||
| 54756 | LD A,(IY+8) | Load A with class of entity at IY | ||||||||||||||
| 54759 | RET | Return | ||||||||||||||
| 54760 | ADD IY,DE | Advance IY pointer to next entity in complex state data block | ||||||||||||||
| 54762 | JR 54673 | Loop back to 54673 | ||||||||||||||
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