Nightshade: Routine at CB7B

Used by the routine at NEW_GAME.

Called by NEW_GAME at every new game. The random number, stirred (NEXT_TURN), gives a cell of the town map at random; if it is solid (types 1 and 2) the next cell in the map is tried, and the next, until one is not. Its column and row go into the start records (START_RECORDS), where NEW_LIFE takes them from; he starts in the middle of the cell. Only the cells a knight can stand in are chosen, but not all equally: a cell just after a run of solid ones in the map is chosen for the whole run as well as for itself.

Used by the routine at NEW_GAME. Called by NEW_GAME at every new game. The random number, stirred (NEXT_TURN), gives a cell of the town map at random; if it is solid (types 1 and 2) the next cell in the map is tried, and the next, until one is not. Its column and row go into the start records (START_RECORDS), where NEW_LIFE takes them from; he starts in the middle of the cell. Only the cells a knight can stand in are chosen, but not all equally: a cell just after a run of solid ones in the map is chosen for the whole run as well as for itself.
RANDOM_START_CELL	CB7B	CALL STIR_RANDOM	stir the random number with R
	CB7E	LD DE,(RANDOM)	DE = a cell, 0-1023: the row in bits 5-9, the column in bits 0-4
RANDOM_START_CELL_0	CB82	LD A,D
	CB83	AND $03
	CB85	LD D,A
	CB86	LD HL,TOWN	is it solid, type 1 or 2?
	CB89	ADD HL,DE
	CB8A	LD A,(HL)
	CB8B	DEC A
	CB8C	CP $02
	CB8E	JR NC,RANDOM_START_CELL_1
	CB90	INC DE	then the next one
	CB91	JR RANDOM_START_CELL_0	then the next one
RANDOM_START_CELL_1	CB93	LD A,E	the column
	CB94	AND $1F
	CB96	LD (START_U_CELL),A
	CB99	RL E	and the row, from bits 5-9
	CB9B	RL D
	CB9D	RL E
	CB9F	RL D
	CBA1	RL E
	CBA3	RL D
	CBA5	LD A,D
	CBA6	AND $1F
	CBA8	LD (START_V_CELL),A
	CBAB	RET