pokecrystal/home/map_objects.asm

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; Functions handling map objects.
GetSpritePalette:: ; 17ff
push hl
push de
push bc
ld c, a
callba _GetSpritePalette
ld a, c
pop bc
pop de
pop hl
ret
; 180e
Function180e:: ; 180e
push hl
push bc
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ld hl, UsedSprites + 2
ld c, SPRITE_GFX_LIST_CAPACITY - 1
ld b, a
ld a, [hConnectionStripLength]
cp 0
jr z, .nope
ld a, b
.loop
cp [hl]
jr z, .found
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rept 2
inc hl
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endr
dec c
jr nz, .loop
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ld a, [UsedSprites + 1]
scf
jr .done
.nope
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ld a, [UsedSprites + 1]
jr .done
.found
inc hl
xor a
ld a, [hl]
.done
pop bc
pop hl
ret
; 1836
Function1836:: ; 1836
push de
push hl
ld b, a
ld a, [hROMBank]
push af
ld a, BANK(Function142a7)
rst Bankswitch
ld a, b
call Function142a7
ld c, a
pop de
ld a, d
rst Bankswitch
pop hl
pop de
ret
; 184a
Function184a:: ; 184a
ld a, [StandingTile]
call GetTileCollision
ld b, a
ret
; 1852
Function1852:: ; 1852
ld a, [StandingTile]
call GetTileCollision
sub 1
ret z
and a
ret
; 185d
GetTileCollision:: ; 185d
; Get the collision type of tile a.
push de
push hl
ld hl, TileCollisionTable
ld e, a
ld d, 0
add hl, de
ld a, [hROMBank]
push af
ld a, BANK(TileCollisionTable)
rst Bankswitch
ld e, [hl]
pop af
rst Bankswitch
ld a, e
and $f ; lo nybble only
pop hl
pop de
ret
; 1875
Function1875:: ; 1875
ld d, a
and $f0
cp $10
jr z, .ok_10
cp $20
jr z, .ok_20
scf
ret
.ok_10
ld a, d
and 7
ret z
scf
ret
.ok_20
ld a, d
and 7
ret z
scf
ret
; 188e
Function188e:: ; 188e
cp $14
ret z
cp $1c
ret
; 1894
CheckCutTreeTile:: ; 1894
cp $12
ret z
cp $1a
ret
; 189a
CheckHeadbuttTreeTile:: ; 189a
cp $15
ret z
cp $1d
ret
; 18a0
CheckCounterTile:: ; 18a0
cp $90
ret z
cp $98
ret
; 18a6
CheckPitTile:: ; 18a6
cp $60
ret z
cp $68
ret
; 18ac
CheckIceTile:: ; 18ac
cp $23
ret z
cp $2b
ret z
scf
ret
; 18b4
CheckWhirlpoolTile:: ; 18b4
nop
cp $24
ret z
cp $2c
ret z
scf
ret
; 18bd
CheckWaterfallTile:: ; 18bd
cp $33
ret z
cp $3b
ret
; 18c3
CheckStandingOnEntrance:: ; 18c3
ld a, [StandingTile]
cp $71 ; door
ret z
cp $79
ret z
cp $7a ; stairs
ret z
cp $7b ; cave
ret
; 18d2
GetMapObject:: ; 18d2
; Return the location of map object a in bc.
ld hl, MapObjects
ld bc, OBJECT_LENGTH
call AddNTimes
ld b, h
ld c, l
ret
; 18de
Function18de:: ; 18de
; Sets carry if the object is not visible on the screen.
ld [hConnectionStripLength], a
call GetMapObject
ld hl, MAPOBJECT_OBJECT_STRUCT_ID
add hl, bc
ld a, [hl]
cp -1
jr z, .not_visible
ld [hConnectedMapWidth], a
call GetObjectStruct
and a
ret
.not_visible
scf
ret
; 18f5
Function18f5:: ; 18f5
ld hl, MAPOBJECT_HOUR
add hl, bc
ld a, [hl]
cp -1
jr nz, .check_hour
ld hl, MAPOBJECT_TIMEOFDAY
add hl, bc
ld a, [hl]
cp -1
jr z, .timeofday_always
ld hl, .TimeOfDayValues_191e
ld a, [TimeOfDay]
add l
ld l, a
jr nc, .ok
inc h
.ok
ld a, [hl]
ld hl, MAPOBJECT_TIMEOFDAY
add hl, bc
and [hl]
jr nz, .timeofday_always
scf
ret
.timeofday_always
and a
ret
.TimeOfDayValues_191e
db 1 << MORN ; 1
db 1 << DAY ; 2
db 1 << NITE ; 4
.check_hour
ld hl, MAPOBJECT_HOUR
add hl, bc
ld d, [hl]
ld hl, MAPOBJECT_TIMEOFDAY
add hl, bc
ld e, [hl]
ld hl, hHours
ld a, d
cp e
jr z, .yes
jr c, .check_timeofday
ld a, [hl]
cp d
jr nc, .yes
cp e
jr c, .yes
jr z, .yes
jr .no
.check_timeofday
ld a, e
cp [hl]
jr c, .no
ld a, [hl]
cp d
jr nc, .yes
jr .no
.yes
and a
ret
.no
scf
ret
; 194d
Function194d:: ; 194d
ld [hConnectionStripLength], a
call GetMapObject
call CopyObjectStruct
ret
; 1956
_CopyObjectStruct:: ; 1956
ld [hConnectionStripLength], a
call Function271e
ld a, [hConnectionStripLength]
call GetMapObject
callba CopyObjectStruct
ret
; 1967
Function1967:: ; 1967
ld [hConnectionStripLength], a
call GetMapObject
ld hl, MAPOBJECT_OBJECT_STRUCT_ID
add hl, bc
ld a, [hl]
cp -1
ret z
ld [hl], -1
push af
call Function1985
pop af
call GetObjectStruct
callba Function4357
ret
; 1985
Function1985:: ; 1985
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ld hl, wd4cd
cp [hl]
jr z, .ok
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ld hl, wd4ce
cp [hl]
ret nz
.ok
callba Function581f
ld a, -1
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ld [wd4cd], a
ld [wd4ce], a
ret
; 199f
DeleteObjectStruct:: ; 199f
call Function1967
call Function2712
ret
; 19a6
Function19a6:: ; 19a6
push hl
call GetMapObject
ld d, b
ld e, c
ld a, -1
ld [de], a
inc de
pop hl
ld bc, OBJECT_LENGTH - 1
call CopyBytes
ret
; 19b8
Function19b8:: ; 19b8
call GetMapObject
ld hl, MAPOBJECT_OBJECT_STRUCT_ID
add hl, bc
ld a, [hl]
push af
ld [hl], -1
inc hl
ld bc, OBJECT_LENGTH - 1
xor a
call ByteFill
pop af
cp -1
ret z
cp $d
ret nc
ld b, a
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ld a, [wd4cd]
cp b
jr nz, .ok
ld a, -1
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ld [wd4cd], a
.ok
ld a, b
call GetObjectStruct
callba Function4357
ret
; 19e9
Function19e9:: ; 19e9
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ld [wc2e2], a
ld a, [hROMBank]
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ld [wc2e3], a
ld a, l
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ld [wc2e3 + 1], a
ld a, h
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ld [wc2e3 + 2], a
ld a, [wc2e2]
call Function18de
ret c
ld hl, OBJECT_03
add hl, bc
ld [hl], $14
ld hl, OBJECT_09
add hl, bc
ld [hl], 0
ld hl, VramState
set 7, [hl]
and a
ret
; 1a13
Function1a13:: ; 1a13
push bc
push de
ld hl, ObjectStructs
ld de, OBJECT_STRUCT_LENGTH
ld c, NUM_OBJECT_STRUCTS
.loop
ld a, [hl]
and a
jr z, .empty
add hl, de
dec c
jr nz, .loop
xor a
jr .done
.empty
ld a, $d
sub c
scf
.done
pop de
pop bc
ret
; 1a2f
Function1a2f:: ; 1a2f
ld hl, OBJECT_03
add hl, bc
ld a, [hl]
cp OBJECT_STRUCT_3_DATA_HEIGHT
jr c, .ok
xor a
.ok
ld hl, ObjectStruct3_Data
ld e, a
ld d, 0
rept OBJECT_STRUCT_3_DATA_WIDTH
add hl,de
endr
ld a, [hl]
ret
; 1a47
Function1a47:: ; 1a47
push bc
push de
ld e, a
ld d, 0
ld hl, ObjectStruct3_Data + 1
rept OBJECT_STRUCT_3_DATA_WIDTH
add hl,de
endr
ld a, BANK(ObjectStruct3_Data)
call GetFarByte
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rept 2
add a
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endr
and $c
pop de
pop bc
ret
; 1a61
Function1a61:: ; 1a61
ld l, a
ld a, [hROMBank]
push af
ld a, BANK(ObjectStruct3_Data)
rst Bankswitch
ld a, l
push bc
call Function1a71
pop bc
pop af
rst Bankswitch
ret
; 1a71
Function1a71:: ; 1a71
ld hl, OBJECT_03
add hl, de
ld [hl], a
push de
ld e, a
ld d, 0
ld hl, ObjectStruct3_Data + 1
rept OBJECT_STRUCT_3_DATA_WIDTH
add hl,de
endr
ld b, h
ld c, l
pop de
ld a, [bc]
inc bc
rlca
rlca
and $c
ld hl, OBJECT_FACING
add hl, de
ld [hl], a
ld a, [bc]
inc bc
ld hl, OBJECT_11
add hl, de
ld [hl], a
ld a, [bc]
inc bc
ld hl, OBJECT_04
add hl, de
ld [hl], a
ld a, [bc]
inc bc
ld hl, OBJECT_FLAGS
add hl, de
ld [hl], a
ld a, [bc]
inc bc
ld hl, OBJECT_PALETTE
add hl, de
ld [hl], a
ret
; 1aae
Function1aae:: ; 1aae
ld a, [hROMBank]
push af
ld a, [hli]
rst Bankswitch
ld a, [hli]
ld d, [hl]
ld hl, OBJECT_27
add hl, bc
add [hl]
ld e, a
ld a, d
adc 0
ld d, a
inc [hl]
ld a, [de]
ld h, a
pop af
rst Bankswitch
ld a, h
ret
; 1ac6
SetVramState_Bit0:: ; 1ac6
ld hl, VramState
set 0, [hl]
ret
; 1acc
ResetVramState_Bit0:: ; 1acc
ld hl, VramState
res 0, [hl]
ret
; 1ad2
DrawOnMap:: ; 1ad2
ld a, [VramState]
bit 0, a
ret z
callba Function55e0
callba RefreshMapAppearDisappear
ret
; 1ae5
GetObjectStruct:: ; 1ae5
ld bc, OBJECT_STRUCT_LENGTH
ld hl, ObjectStructs
call AddNTimes
ld b, h
ld c, l
ret
; 1af1
GetObjectSprite:: ; 1af1
ld hl, OBJECT_SPRITE
add hl, bc
ld a, [hl]
and a
ret
; 1af8
SetSpriteDirection:: ; 1af8
push af
ld hl, OBJECT_FACING
add hl, bc
ld a, [hl]
and %11110011
ld e, a
pop af
and %00001100
or e
ld [hl], a
ret
; 1b07
GetSpriteDirection:: ; 1b07
ld hl, OBJECT_FACING
add hl, bc
ld a, [hl]
and %00001100
ret
; 1b0f