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Routines |
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Used by the routine at 34438.
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| 45899 | LD HL,(34279) | Modify instruction at 46045 with address of primary display buffer... | ||
| 45902 | LD (46046),HL | ... | ||
| 45905 | LD A,(34230) | Load C with depth of current character's current room... | ||
| 45908 | LD C,A | ... | ||
| 45909 | LD A,(34218) | Load B with index of current character's current room... | ||
| 45912 | LD B,A | ... | ||
| 45913 | LD D,0 | Load D with zero | ||
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Start drawing simple entities
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| 45915 | LD IX,(34236) | Load IX with start address of current level's simple state data | ||
| 45919 | LD E,6 | Load DE with 6 (as simple state data entries are 6 bytes wide) | ||
| 45921 | LD A,(IX+0) | Load first byte of current simple state data entry into A | ||
| 45924 | CP 255 | If this is 255 (end marker for complex state data)... | ||
| 45926 | JR Z,45961 | ...then skip ahead to 45961 | ||
| 45928 | CP 254 | If it is not 254 (end marker for level's simple state data)... | ||
| 45930 | JR NZ,45939 | ...then skip ahead to 45939 | ||
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At this point, we have passed the end marker for the simple state data block and are now at the start of the complex state data block whose entries are 13 bytes wide.
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| 45932 | LD E,13 | Load DE with 13 | ||
| 45934 | INC IX | Advance IX to start of complex state data block | ||
| 45936 | LD A,(IX+0) | Load A with entity's room index | ||
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At this point, A holds the index of the room to which the simple or complex entity belongs
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| 45939 | CP B | If entity's room is not the same as the current character's current room... | ||
| 45940 | JR NZ,45957 | ...then skip ahead to 45957 | ||
| 45942 | LD A,C | If entity's depth is not the same as current depth in C... | ||
| 45943 | CP (IX+1) | ... | ||
| 45946 | JR NZ,45957 | ...then skip ahead to 45957 | ||
| 45948 | EXX | Switch registers | ||
| 45949 | PUSH IX | Store IX (pointer to current entry in simple/complex state data) | ||
| 45951 | CALL 45965 | Load primary display buffer with graphic layout data for current entity | ||
| 45954 | POP IX | Restore IX (pointer to current entry in simple/complex state data) | ||
| 45956 | EXX | Switch registers | ||
| 45957 | ADD IX,DE | Advance IX to next entity's state data | ||
| 45959 | JR 45921 | Loop back to 45921 | ||
| 45961 | DEC C | Decrease current depth (i.e. closer to screen) | ||
| 45962 | JR NZ,45915 | If depth is not zero (i.e. still depth levels to process) then loop back to 45915 | ||
| 45964 | RET | Return | ||
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