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InitMovementBuffer:: ; 1b1e
ld [wMovementBufferPerson], a
xor a
ld [wMovementBufferCount], a
ld a, $0 ; useless
ld [wd004], a
ld a, MovementBuffer % $100
ld [wd005], a
ld a, MovementBuffer / $100
ld [wd006], a
ret
; 1b35
DecrementMovementBufferCount:: ; 1b35
ld a, [wMovementBufferCount]
and a
ret z
dec a
ld [wMovementBufferCount], a
ret
; 1b3f
AppendToMovementBuffer:: ; 1b3f
push hl
push de
ld hl, wMovementBufferCount
ld e, [hl]
inc [hl]
ld d, 0
ld hl, MovementBuffer
add hl, de
ld [hl], a
pop de
pop hl
ret
; 1b50
AppendToMovementBufferNTimes:: ; 1b50
push af
ld a, c
and a
jr nz, .okay
pop af
ret
.okay
pop af
.loop
call AppendToMovementBuffer
dec c
jr nz, .loop
ret
; 1b5f
ComputePathToWalkToPlayer:: ; 1b5f
push af
; compare x coords, load left/right into h, and x distance into d
ld a, b
sub d
ld h, LEFT
jr nc, .got_x_distance
dec a
cpl
ld h, RIGHT
.got_x_distance
ld d, a
; compare y coords, load up/down into l, and y distance into e
ld a, c
sub e
ld l, UP
jr nc, .got_y_distance
dec a
cpl
ld l, DOWN
.got_y_distance
ld e, a
; if the x distance is less than the y distance, swap h and l, and swap d and e
cp d
jr nc, .done
ld a, h
ld h, l
ld l, a
ld a, d
ld d, e
ld e, a
.done
pop af
ld b, a
; Add movement in the longer direction first...
ld a, h
call .GetMovementData
ld c, d
call AppendToMovementBufferNTimes
; ... then add the shorter direction.
ld a, l
call .GetMovementData
ld c, e
call AppendToMovementBufferNTimes
ret
; 1b92
.GetMovementData: ; 1b92
push de
push hl
ld l, b
ld h, 0
rept 2
add hl, hl
endr
ld e, a
ld d, 0
add hl, de
ld de, .MovementData
add hl, de
ld a, [hl]
pop hl
pop de
ret
; 1ba5
.MovementData:
slow_step_down
slow_step_up
slow_step_left
slow_step_right
step_down
step_up
step_left
step_right
big_step_down
big_step_up
big_step_left
big_step_right
; 1bb1
SetMenuAttributes:: ; 1bb1
push hl
push bc
ld hl, w2DMenuCursorInitY
ld b, $8
.loop
ld a, [de]
inc de
ld [hli], a
dec b
jr nz, .loop
ld a, $1
rept 2
ld [hli], a
endr
xor a
rept 3
ld [hli], a
endr
pop bc
pop hl
ret
; 1bc9
StaticMenuJoypad:: ; 1bc9
callab _StaticMenuJoypad
call GetMenuJoypad
ret
; 1bd3
ScrollingMenuJoypad:: ; 1bd3
callab _ScrollingMenuJoypad
call GetMenuJoypad
ret
; 1bdd
GetMenuJoypad:: ; 1bdd
push bc
push af
ld a, [hJoyLast]
and D_PAD
ld b, a
ld a, [hJoyPressed]
and BUTTONS
or b
ld b, a
pop af
ld a, b
pop bc
ret
; 1bee
PlaceHollowCursor:: ; 1bee
ld hl, wCursorCurrentTile
ld a, [hli]
ld h, [hl]
ld l, a
ld [hl], "▷"
ret
; 1bf7
HideCursor:: ; 1bf7
ld hl, wCursorCurrentTile
ld a, [hli]
ld h, [hl]
ld l, a
ld [hl], " "
ret
; 1c00
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