Alien (BUGFIX 1.7): Routine at 33589

Steps the ROM-traversal script pointer forward by one byte and returns the low nibble (0-15) of the new byte in A. The pointer lives at 31265 and walks through ZX Spectrum ROM bytes starting at the address seeded from the FRAMES counter (e.g. $9041 with H masked into ROM range = $1041 — see ResetScriptPtr). Each nibble encodes one game command for the AI scheduler.

Output: A = next script command (0-15)

Used by the routines at 35814, 36457, 36717, 36859, 37018, 37992, 38674, 39256, 39400 and 42276.

Steps the ROM-traversal script pointer forward by one byte and returns the low nibble (0-15) of the new byte in A. The pointer lives at 31265 and walks through ZX Spectrum ROM bytes starting at the address seeded from the FRAMES counter (e.g. $9041 with H masked into ROM range = $1041 — see ResetScriptPtr). Each nibble encodes one game command for the AI scheduler. Output: A = next script command (0-15) Used by the routines at 35814, 36457, 36717, 36859, 37018, 37992, 38674, 39256, 39400 and 42276.
33589	LD HL,(31265)	HL = current script pointer (31265)
33592	INC HL	advance to next ROM byte
33593	LD (31265),HL	save updated pointer
33596	LD A,(HL)	read ROM byte at new address
33597	AND 15	keep only low nibble → command 0-15
33599	RET