Everyone's a Wally: Routine at B9D6

B9D6: Draw Characters In The Current Room

Used by the routines at 813B, 81AE and B3BE.
Write the current room ID for referring back to.
Draw_Characters_CurrentRoom	B9D6	LD A,(IY+$0F)	Write the current room (IY+0F) to TempStore_Room.
	B9D9	LD ($B951),A	Write the current room (IY+0F) to TempStore_Room.
There are five characters, cycle through each of them in reverse.
	B9DC	LD B,$05	B=05 (counter).
Store the current character reference so it isn't corrupted.
	B9DE	PUSH IY	Stash IY on the stack.
Starting at the end with Harry.
	B9E0	LD IY,$BC6B	IY=FrameId_Harry.
Draw_Characters_CurrentRoom_Loop	B9E4	PUSH BC	Stash the counter in BC on the stack.
Don't draw the character if they're not in the current room.
	B9E5	LD A,($B951)	A=*TempStore_Room.
	B9E8	CP (IY+$0F)	If A is not equal to the current room (*IY+0F) jump to Draw_Characters_CurrentRoom_Skip.
	B9EB	JR NZ,Draw_Characters_CurrentRoom_Skip
Draw the character in the shadow buffer as they are in the room with our current character.
	B9ED	CALL WriteSprite_ShadowBuffer	Call WriteSprite_ShadowBuffer.
Move onto the next character.
Draw_Characters_CurrentRoom_Skip	B9F0	DEC IY	Decrease IY by one.
	B9F2	POP BC	Restore the counter (BC) from the stack.
	B9F3	DJNZ Draw_Characters_CurrentRoom_Loop	Decrease counter by one and loop back to Draw_Characters_CurrentRoom_Loop until counter is zero.
Restores the current character pointer to IY.
	B9F5	POP IY	Restore IY from the stack.
Update the screen buffer and return.
	B9F7	CALL ShadowBufferToScreen	Call ShadowBufferToScreen.
	B9FA	RET	Return.