Routines
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29194: Control the bike when ERIC's not sitting on the saddle
 The address of this uninterruptible subcommand routine is placed into bytes 17 and 18 of the bike's buffer by the routine at 29278. It controls the bike when it is wheeling along on its own (after ERIC has dismounted), or when ERIC is standing on the saddle. 29194 LD HL,32752 32752 holds the bike's momentum 29197 LD A,(HL) Pick this up in A 29198 SUB 7 Is it time for the bike to come to rest? 29200 JR NC,29223 Jump if not It's time for the bike to come to rest. 29202 LD L,237 HL=32749 (ERIC's status flags) 29204 BIT 7,(HL) Is ERIC standing on the saddle of the bike? 29206 JR Z,29210 Jump if not 29208 LD (HL),16 Set bit 4 at 32749: ERIC is falling and will not land on his feet 29210 LD H,211 211=bike 29212 CALL 25012 Update the SRB for the bike's current animatory state and location 29215 DEC A A=animatory state of the bike resting on the floor 29216 LD L,18 Remove the address of this routine from bytes 17 and 18 of the bike's buffer 29218 LD (HL),0 29220 JP 24880 Update the bike's animatory state and update the SRB The bike still has some momentum left. Check whether it has hit anything. 29223 LD (HL),A Set the bike's remaining momentum at 32752 29224 LD HL,(54016) E=bike's x-coordinate, A=bike's animatory state 29227 LD A,L 29228 LD E,H 29229 CALL 28672 Check for walls, closed doors or ALBERT in the bike's path 29232 LD L,237 HL=32749 (ERIC's status flags) 29234 JR NC,29242 Jump if ALBERT's not impeding the bike's progress 29236 BIT 7,(HL) Is ERIC standing on the saddle of the bike? 29238 JR Z,29252 Jump if not 29240 LD (HL),16 Set bit 4: ERIC is falling and will not land on his feet 29242 JR NZ,29252 Jump if there are no walls or closed doors in the bike's path 29244 BIT 7,(HL) Is ERIC standing on the saddle of the bike? 29246 JR Z,29210 Jump if not 29248 LD (HL),64 Set bit 6: ERIC has hit a wall or closed door while standing on the saddle of the bike 29250 JR 29210 29252 LD H,211 211=bike 29254 CALL 29264 Move the bike and one space forward and update the SRB 29257 LD A,(32749) 32749 holds ERIC's status flags 29260 RLCA Is ERIC standing on the saddle of the bike? 29261 RET NC Return if not This entry point is used by the routine at 29278. 29262 LD H,210 210=ERIC This entry point is used by the routine at 30380. 29264 CALL 25012 Update the SRB for the character's current animatory state and location 29267 RLCA 29268 RRCA 29269 JR C,29273 Jump if the character is facing right 29271 DEC E 29272 DEC E 29273 INC E Now E=x-coordinate of the spot in front of the character 29274 JP 31723 Update the character's location, update the SRB, and scroll the screen if necessary
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