Nightshade: Routine at C898

C898: Colour the knight by the hits he has left

Used by the routine at NEW_GAME.

Called every turn by NEW_GAME with the knight's place in the middle of the play area: bright white with three hits left, yellow with two, green with one. Four rows of two cells: the left one of each row bright and the right one not, with the play area's paper this turn mixed into both. Nothing is coloured while his record is empty, between one life and the next.

Input
A	the colour (from the list at KNIGHT_COLOURS, by HITS)
HL	his place in the attribute buffer
B	how many rows (4)

COLOUR_KNIGHT

C898

EX AF,AF'

nothing while his legs' record is empty

C899

LD A,(KNIGHT)

C89C

AND A

C89D

RET Z

C89E

EX AF,AF'

C89F

LD E,A

the colour with this turn's paper

C8A0

LD A,(LAST_FLASH)

C8A3

OR E

C8A4

LD DE,$0017

COLOUR_KNIGHT_0

C8A7

OR $40

each row: the left cell bright, the right one not bright and not flashing

C8A9

LD (HL),A

C8AA

INC HL

C8AB

AND $3F

C8AD

LD (HL),A

C8AE

ADD HL,DE

C8AF

DJNZ COLOUR_KNIGHT_0

C8B1

RET