The Hobbit: Routine at 32632

32632: Drawing Routine

Used by the routine at YouSeeStart. Draws a location picture from its line, fill and attribute commands. Nothing is drawn when the picture switch is off, and a dark place is forced black. See Location Graphics Decoding.
Drawing	32632	PUSH AF	Save AF and jump to Drawing_Check if the picture switch at 46855 is not zero.
	32633	LD A,(46855)
	32636	AND A
	32637	JR NZ,Drawing_Check
	32639	LD A,255	Write 255 to LocationID.
	32641	LD (32631),A	Write 255 to LocationID.
	32644	POP AF	Restore AF from the stack.
	32645	RET	Return.
Drawing Check
Drawing_Check	32646	POP AF	Keep the saved flags, save the registers, and point IX at the location graphics table.
	32647	PUSH AF
	32648	PUSH HL
	32649	PUSH BC
	32650	PUSH DE
	32651	PUSH IX
	32653	LD IX,52224
	32657	CALL IndexIdTable	Call IndexIdTable to look this id up. The zero flag is set when nothing matches.
	32660	LD (32631),A	Store the location ID at LocationID.
	32663	LD L,(IX+1)	Read the low byte of this location's graphics address.
	32666	LD H,(IX+2)	Read the high byte of this location's graphics address.
	32669	CALL NZ,DrawingSetup	If there is graphics data for this location then call DrawingSetup.
	32672	POP IX	Restore IX, DE, BC, HL and AF from the stack.
	32674	POP DE
	32675	POP BC
	32676	POP HL
	32677	POP AF
	32678	RET	Return.