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Routines |
| 62771 | LD HL,32758 | Decrement the jumping action timer at 32758 (which starts at 16) |
| 62774 | DEC (HL) | Has ERIC completed the jump? |
| 62775 | JP Z,62501 | Jump if so |
| 62778 | LD A,(HL) | Pick up the current value of the action timer in A |
| 62779 | CP 12 | |
| 62781 | LD B,15 | Lines message 15: YOU ARE NOT A KANGAROO |
| 62783 | JP Z,62550 | Jump if it's time to check whether any teachers can see ERIC jumping |
| 62786 | LD H,172 | 172=ERIC |
| 62788 | CP 13 | Is it time to check whether ERIC has opened the safe? |
| 62790 | JP Z,62750 | Jump if so |
| 62793 | CP 14 | Is it time to make the jumping sound effect? |
| 62795 | JP Z,60139 | Jump if so |
| 62798 | CP 9 | Is it time to move ERIC's arm back? |
| 62800 | JP Z,28779 | Jump if so |
| 62803 | CP 3 | Is it time to bring ERIC back down to the floor? |
| 62805 | JR NZ,62814 | Jump if not |
| 62807 | CALL 25108 | Update SRB for ERIC's current location |
| 62810 | INC D | Move ERIC downwards |
| 62811 | JP 25008 | Update ERIC's location and update SRB |
| 62814 | CP 6 | Return if A < 6 (nothing to check or do) |
| 62816 | RET C |
| 62817 | JR NZ,62891 | Jump unless (a) it's time to check whether ERIC has jumped on a boy, or (b) ERIC is already standing on a boy |
| 62819 | LD L,97 | Byte 97 of ERIC's buffer holds his y-coordinate |
| 62821 | LD D,(HL) | Pick this up in D |
| 62822 | INC D | Down a level (where the boy that ERIC is standing on would be, if any) |
| 62823 | INC L | Byte 98 holds ERIC's x-coordinate |
| 62824 | LD E,(HL) | Pick this up in E |
| 62825 | LD B,11 | There are 11 little boys |
| 62827 | LD H,152 | 152=little boy no. 1 |
| 62829 | CALL 62905 | Is ERIC standing on a little boy? |
| 62832 | JR C,62842 | Jump if so |
| 62834 | LD H,167 | 167=BOY WANDER |
| 62836 | LD B,3 | There are three main kids besides ERIC |
| 62838 | CALL 62911 | Is ERIC standing on one of the three main kids? |
| 62841 | RET NC | Return if not |
| 62842 | CALL 26426 | Check for keypresses |
| 62845 | LD HL,32758 | Set the jumping action timer at 32758 to 7, so that we keep returning to this section of code while ERIC is standing on a boy |
| 62848 | LD (HL),7 | |
| 62850 | RET Z | Return if no key of interest was pressed |
| 62851 | SET 5,A | Convert the ASCII code of the keypress in A to lower case |
| 62853 | CP 106 | Was 'j' (jump) pressed? |
| 62855 | JR NZ,62860 | Jump if not |
| 62857 | LD (HL),144 | Set the jumping action timer at 32758 to 144 to indicate that ERIC has jumped while standing on a boy |
| 62859 | RET | Return to the main loop with the carry flag reset |
| 62860 | CP 111 | 111='o' |
| 62862 | LD B,0 | Set B=0 (ERIC facing left) for later comparison |
| 62864 | JR Z,62871 | Jump if 'o' (left) was pressed |
| 62866 | LD B,128 | Set B=128 (ERIC facing right) for later comparison |
| 62868 | CP 112 | Was 'p' (right) pressed? |
| 62870 | RET NZ | Return if not |
| 62871 | LD HL,44134 | A=animatory state of ERIC before he jumped (stored in byte 102 of his buffer) |
| 62874 | LD A,(HL) | |
| 62875 | AND 128 | Keep only the 'direction' bit |
| 62877 | CP B | Should ERIC turn round? |
| 62878 | RET Z | Return if not |
| 62879 | LD A,(HL) | Adjust ERIC's pre-jump animatory state to reflect his turning round while standing on a boy |
| 62880 | XOR 128 | |
| 62882 | LD (HL),A | |
| 62883 | CALL 25108 | Update SRB for ERIC's current animatory state |
| 62886 | XOR 128 | A=animatory state of ERIC facing the other way |
| 62888 | JP 25008 | Update ERIC's animatory state and update SRB |
| 62891 | CP 134 | Return now if the SUB 128 instruction below would make A=6 |
| 62893 | RET Z | |
| 62894 | SUB 128 | Return unless ERIC jumped while standing on a boy |
| 62896 | RET C |
| 62897 | JP NZ,62779 | Run the usual checks while ERIC is in mid-air above a supine boy |
| 62900 | JR 62844 | This should be JR 62845 |