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Routines |
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Called from the main loop at 25129.
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| 26730 | LD HL,(31851) | Pick up Horace's current location. | ||
| 26733 | LD BC,(31940) | Pick up the location of the bell in the current maze. | ||
| 26737 | LD A,B | Has Horace already sounded the alarm? | ||
| 26738 | OR C | |||
| 26739 | RET Z | Return if so. | ||
| 26740 | AND A | Clear the carry flag. (This instruction is redundant.) | ||
| 26741 | SBC HL,BC | Subtract the bell's location from Horace's. | ||
| 26743 | LD A,H | Is Horace in exactly the same location as the bell? | ||
| 26744 | OR L | |||
| 26745 | JR Z,26814 | Jump if so. | ||
| 26747 | INC HL | Is Horace one space to the left of the bell? | ||
| 26748 | LD A,H | |||
| 26749 | OR L | |||
| 26750 | JR Z,26814 | Jump if so. | ||
| 26752 | DEC HL | Is Horace one space to the right of the bell? | ||
| 26753 | DEC HL | |||
| 26754 | LD A,H | |||
| 26755 | OR L | |||
| 26756 | JR Z,26814 | Jump if so. | ||
| 26758 | LD BC,33 | Is Horace one space above the bell? | ||
| 26761 | ADD HL,BC | |||
| 26762 | LD A,H | |||
| 26763 | OR L | |||
| 26764 | JR Z,26814 | Jump if so. | ||
| 26766 | XOR A | Clear the carry flag. (This instruction is redundant.) | ||
| 26767 | LD BC,65 | Is Horace one space below the bell? | ||
| 26770 | SBC HL,BC | |||
| 26772 | LD A,H | |||
| 26773 | OR L | |||
| 26774 | JR Z,26814 | Jump if so. | ||
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Horace has not sounded the alarm.
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| 26776 | LD HL,(31940) | Pick up the location of the bell in the current maze. | ||
| 26779 | LD A,(31942) | Increment the bell's animation frame counter. | ||
| 26782 | INC A | |||
| 26783 | LD (31942),A | |||
| 26786 | AND 56 | Keep only bits 3, 4 and 5. | ||
| 26788 | CP 31 | Is the result 30 or less (i.e. bit 5 reset)? | ||
| 26790 | JR C,26794 | Jump if so. | ||
| 26792 | XOR 56 | Flip bits 3 and 4, and reset bit 5. | ||
| 26794 | RLCA | BC=4*A. | ||
| 26795 | RLCA | |||
| 26796 | LD C,A | |||
| 26797 | LD B,0 | |||
| 26799 | LD DE,32519 | This is the base address of the graphic data for the bell. | ||
| 26802 | EX DE,HL | Point DE at the graphic data for the appropriate bell sprite. | ||
| 26803 | ADD HL,BC | |||
| 26804 | EX DE,HL | |||
| 26805 | CALL 27663 | Set HL' to the attribute file address of the bell's location. | ||
| 26808 | LD C,58 | This is the attribute byte (INK 2: PAPER 7). | ||
| 26810 | CALL 27606 | Draw the bell. | ||
| 26813 | RET | |||
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Horace has sounded the alarm.
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| 26814 | LD HL,0 | Clear the bell location to indicate that Horace has sounded the alarm. | ||
| 26817 | LD (31940),HL | |||
| 26820 | LD DE,32647 | Point DE at the graphic data for the blank sprite. | ||
| 26823 | LD HL,(28625) | Pick up the bell location for the current maze. | ||
| 26826 | CALL 27663 | Set HL' to the corresponding attribute file address. | ||
| 26829 | LD C,62 | This is the attribute byte (INK 6: PAPER 7). | ||
| 26831 | CALL 27606 | Draw the blank sprite where the bell was. | ||
| 26834 | CALL 26657 | Draw Horace. | ||
| 26837 | LD HL,(31859) | Add 60 to the score. | ||
| 26840 | LD BC,60 | |||
| 26843 | ADD HL,BC | |||
| 26844 | LD (31859),HL | |||
| 26847 | CALL 26055 | Print the new score and make a sound effect. | ||
| 26850 | LD A,(31842) | Pick up the game speed parameter in A. | ||
| 26853 | LD L,0 | HL=128*A. | ||
| 26855 | LD H,A | |||
| 26856 | SRA H | |||
| 26858 | RR L | |||
| 26860 | LD (28078),HL | Initialise the guard panic timer to this value. | ||
| 26863 | LD A,(28090) | Update the animation frame in the temporary guard buffer; these instructions are redundant and have no effect on any of the guards. | ||
| 26866 | ADD A,2 | |||
| 26868 | AND 3 | |||
| 26870 | LD (28090),A | |||
| 26873 | LD HL,(31859) | Add 150 to the score. | ||
| 26876 | LD BC,150 | |||
| 26879 | ADD HL,BC | |||
| 26880 | LD (31859),HL | |||
| 26883 | CALL 26055 | Print the new score and make a sound effect. | ||
| 26886 | RET | |||
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