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Routines |
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The address of this uninterruptible subcommand routine is placed into bytes 17 and 18 the frog's buffer by the routine at 30229 when a catapult pellet has knocked the frog out of a cup. It controls the frog up to the point where it hits the floor, and deals with any collision with MISS TAKE's head on the way.
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| 30804 | LD A,(32747) | 32747 holds the inventory flags | ||
| 30807 | RRCA | Has ERIC got the safe key already? | ||
| 30808 | JR C,30889 | Jump if so | ||
| 30810 | LD HL,52224 | Point HL at byte 0 of MISS TAKE's buffer | ||
| 30813 | LD A,(HL) | A=MISS TAKE's animatory state | ||
| 30814 | INC L | L=1 | ||
| 30815 | LD E,(HL) | E=MISS TAKE's x-coordinate | ||
| 30816 | INC L | L=2 | ||
| 30817 | CP 118 | 118: Is MISS TAKE sitting on the floor facing left? | ||
| 30819 | JR Z,30829 | Jump if so | ||
| 30821 | CP 246 | 246: Is she sitting on the floor facing right? | ||
| 30823 | LD A,252 | A=-4 | ||
| 30825 | JR NZ,30832 | Jump if not | ||
| 30827 | DEC E | |||
| 30828 | DEC E | |||
| 30829 | INC E | Now E=x-coordinate the frog would have to be at to be in line with MISS TAKE's head as she sits on the floor | ||
| 30830 | LD A,253 | A=-3 | ||
| 30832 | ADD A,(HL) | A=y-coordinate the frog would have to be at to be level with MISS TAKE's head | ||
| 30833 | LD H,212 | 212=frog | ||
| 30835 | CP (HL) | Compare with the frog's current y-coordinate | ||
| 30836 | JR NZ,30889 | Jump if the frog has not reached the level of MISS TAKE's head | ||
| 30838 | DEC L | L=1 | ||
| 30839 | LD A,(HL) | A=frog's x-coordinate | ||
| 30840 | CP E | Compare with the x-coordinate of MISS TAKE's head | ||
| 30841 | JR NZ,30889 | Jump if they don't match | ||
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ERIC's pellet has knocked the frog out of the cup and onto MISS TAKE's head. Celebrate!
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| 30843 | LD HL,32747 | 32747 holds the inventory flags | ||
| 30846 | SET 0,(HL) | Give ERIC the safe key | ||
| 30848 | LD A,200 | Add 2000 to the score and print it | ||
| 30850 | CALL 29621 | |||
| 30853 | LD HL,768 | Make the safe-key-getting celebratory sound effect | ||
| 30856 | LD D,1 | |||
| 30858 | LD A,L | |||
| 30859 | AND 63 | |||
| 30861 | INC A | |||
| 30862 | LD B,A | |||
| 30863 | LD C,(HL) | |||
| 30864 | SET 4,C | |||
| 30866 | CALL 29836 | |||
| 30869 | DEC L | |||
| 30870 | JR NZ,30856 | |||
| 30872 | NOP | |||
| 30873 | NOP | |||
| 30874 | NOP | |||
| 30875 | CALL 31746 | Print the inventory (which now includes the safe key) | ||
| 30878 | LD H,212 | 212=frog | ||
| 30880 | CALL 25012 | Update the SRB for the frog's current animatory state and location | ||
| 30883 | DEC E | Move the frog one space to the left | ||
| 30884 | INC A | A=29: frog facing left, airborne (phase 1) | ||
| 30885 | INC D | Make the frog fall one level | ||
| 30886 | JP 24880 | Update the frog's animatory state and location and update the SRB | ||
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The frog is still above the floor, but not in contact with MISS TAKE's head.
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| 30889 | CALL 25012 | Update the SRB for the frog's current animatory state and location | ||
| 30892 | BIT 4,D | Is the frog about to hit the floor (D=16)? | ||
| 30894 | JR Z,30885 | Jump if not (to make it fall another level) | ||
| 30896 | CP 28 | The frog's animatory state will be 29 if it bounced off MISS TAKE's head | ||
| 30898 | LD A,28 | 28=frog sitting still, facing left | ||
| 30900 | JR NZ,30886 | Jump if the frog bounced off MISS TAKE's head | ||
| 30902 | INC D | D=17 (bottom floor) | ||
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This entry point is used by the routine at 30906.
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| 30903 | CALL 30534 | Update the frog's animatory state and location and then resume control at 30906 | ||
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