pokecrystal-board/home/map.asm

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; Functions dealing with rendering and interacting with maps.
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ClearUnusedMapBuffer::
ld hl, wUnusedMapBuffer
ld bc, wUnusedMapBufferEnd - wUnusedMapBuffer
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ld a, 0
call ByteFill
ret
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CheckScenes::
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; Checks wCurMapSceneScriptPointer. If it's empty, returns -1 in a. Otherwise, returns the active scene ID in a.
push hl
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ld hl, wCurMapSceneScriptPointer
ld a, [hli]
ld h, [hl]
ld l, a
or h
ld a, [hl]
jr nz, .scene_exists
ld a, -1
.scene_exists
pop hl
ret
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GetCurrentMapSceneID::
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; Grabs the wram map scene script pointer for the current map and loads it into wCurMapSceneScriptPointer.
; If there is no scene, both bytes of wCurMapSceneScriptPointer are wiped clean.
; Copy the current map group and number into bc. This is needed for GetMapSceneID.
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ld a, [wMapGroup]
ld b, a
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ld a, [wMapNumber]
ld c, a
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; Blank out wCurMapSceneScriptPointer; this is the default scenario.
xor a
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ld [wCurMapSceneScriptPointer], a
ld [wCurMapSceneScriptPointer + 1], a
call GetMapSceneID
ret c ; The map is not in the scene script table
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; Load the scene script pointer from de into wCurMapSceneScriptPointer
ld a, e
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ld [wCurMapSceneScriptPointer], a
ld a, d
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ld [wCurMapSceneScriptPointer + 1], a
xor a
ret
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GetMapSceneID::
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; Searches the scene_var table for the map group and number loaded in bc, and returns the wram pointer in de.
; If the map is not in the scene_var table, returns carry.
push bc
ldh a, [hROMBank]
push af
ld a, BANK(MapScenes)
rst Bankswitch
ld hl, MapScenes
.loop
push hl
ld a, [hli] ; map group, or terminator
cp -1
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jr z, .end ; the current map is not in the scene_var table
cp b
jr nz, .next ; map group did not match
ld a, [hli] ; map number
cp c
jr nz, .next ; map number did not match
jr .found ; we found our map
.next
pop hl
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ld de, 4 ; scene_var size
add hl, de
jr .loop
.end
scf
jr .done
.found
ld e, [hl]
inc hl
ld d, [hl]
.done
pop hl
pop bc
ld a, b
rst Bankswitch
pop bc
ret
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OverworldTextModeSwitch::
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call LoadMapPart
call SwapTextboxPalettes
ret
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LoadMapPart::
ldh a, [hROMBank]
push af
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ld a, [wTilesetBlocksBank]
rst Bankswitch
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call LoadMetatiles
ld a, "■"
hlcoord 0, 0
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ld bc, SCREEN_WIDTH * SCREEN_HEIGHT
call ByteFill
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ld a, BANK(_LoadMapPart)
rst Bankswitch
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call _LoadMapPart
pop af
rst Bankswitch
ret
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LoadMetatiles::
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; de <- wOverworldMapAnchor
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ld a, [wOverworldMapAnchor]
ld e, a
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ld a, [wOverworldMapAnchor + 1]
ld d, a
ld hl, wSurroundingTiles
ld b, SURROUNDING_HEIGHT / METATILE_WIDTH ; 5
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.row
push de
push hl
ld c, SURROUNDING_WIDTH / METATILE_WIDTH ; 6
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.col
push de
push hl
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; Load the current map block.
; If the current map block is a border block, load the border block.
ld a, [de]
and a
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jr nz, .ok
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ld a, [wMapBorderBlock]
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.ok
; Load the current wSurroundingTiles address into de.
ld e, l
ld d, h
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; Set hl to the address of the current metatile data ([wTilesetBlocksAddress] + (a) tiles).
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; This is buggy; it wraps around past 128 blocks.
; To fix, uncomment the line below.
add a ; Comment or delete this line to fix the above bug.
ld l, a
ld h, 0
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; add hl, hl
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add hl, hl
add hl, hl
add hl, hl
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ld a, [wTilesetBlocksAddress]
add l
ld l, a
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ld a, [wTilesetBlocksAddress + 1]
adc h
ld h, a
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; copy the 4x4 metatile
rept METATILE_WIDTH + -1
rept METATILE_WIDTH
ld a, [hli]
ld [de], a
inc de
endr
ld a, e
add SURROUNDING_WIDTH - METATILE_WIDTH
ld e, a
jr nc, .next\@
inc d
.next\@
endr
rept METATILE_WIDTH
ld a, [hli]
ld [de], a
inc de
endr
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; Next metatile
pop hl
ld de, METATILE_WIDTH
add hl, de
pop de
inc de
dec c
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jp nz, .col
; Next metarow
pop hl
ld de, SURROUNDING_WIDTH * METATILE_WIDTH
add hl, de
pop de
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ld a, [wMapWidth]
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add 6
add e
ld e, a
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jr nc, .ok2
inc d
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.ok2
dec b
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jp nz, .row
ret
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ReturnToMapFromSubmenu::
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ld a, MAPSETUP_SUBMENU
ldh [hMapEntryMethod], a
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farcall RunMapSetupScript
xor a
ldh [hMapEntryMethod], a
ret
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CheckWarpTile::
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call GetDestinationWarpNumber
ret nc
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push bc
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farcall CheckDirectionalWarp
pop bc
ret nc
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call CopyWarpData
scf
ret
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WarpCheck::
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call GetDestinationWarpNumber
ret nc
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call CopyWarpData
ret
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GetDestinationWarpNumber::
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farcall CheckWarpCollision
ret nc
ldh a, [hROMBank]
push af
call SwitchToMapScriptsBank
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call .GetDestinationWarpNumber
pop de
ld a, d
rst Bankswitch
ret
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.GetDestinationWarpNumber:
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ld a, [wPlayerStandingMapY]
sub 4
ld e, a
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ld a, [wPlayerStandingMapX]
sub 4
ld d, a
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ld a, [wCurMapWarpCount]
and a
ret z
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ld c, a
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ld hl, wCurMapWarpsPointer
ld a, [hli]
ld h, [hl]
ld l, a
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.loop
push hl
ld a, [hli]
cp e
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jr nz, .next
ld a, [hli]
cp d
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jr nz, .next
jr .found_warp
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.next
pop hl
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ld a, WARP_EVENT_SIZE
add l
ld l, a
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jr nc, .okay
inc h
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.okay
dec c
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jr nz, .loop
xor a
ret
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.found_warp
pop hl
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call .IncreaseHLTwice
ret nc ; never encountered
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ld a, [wCurMapWarpCount]
inc a
sub c
ld c, a
scf
ret
.IncreaseHLTwice:
inc hl
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inc hl
scf
ret
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CopyWarpData::
ldh a, [hROMBank]
push af
call SwitchToMapScriptsBank
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call .CopyWarpData
pop af
rst Bankswitch
scf
ret
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.CopyWarpData:
push bc
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ld hl, wCurMapWarpsPointer
ld a, [hli]
ld h, [hl]
ld l, a
ld a, c
dec a
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ld bc, WARP_EVENT_SIZE
call AddNTimes
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ld bc, 2 ; warp number
add hl, bc
ld a, [hli]
cp -1
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jr nz, .skip
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ld hl, wBackupWarpNumber
ld a, [hli]
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.skip
pop bc
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ld [wNextWarp], a
ld a, [hli]
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ld [wNextMapGroup], a
ld a, [hli]
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ld [wNextMapNumber], a
ld a, c
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ld [wPrevWarp], a
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ld a, [wMapGroup]
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ld [wPrevMapGroup], a
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ld a, [wMapNumber]
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ld [wPrevMapNumber], a
scf
ret
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CheckOutdoorMap::
cp ROUTE
ret z
cp TOWN
ret
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CheckIndoorMap::
cp INDOOR
ret z
cp CAVE
ret z
cp DUNGEON
ret z
cp GATE
ret
; unused
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UnreferencedCheckEnvironment::
cp INDOOR
ret z
cp GATE
ret z
cp ENVIRONMENT_5
ret
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LoadMapAttributes::
call CopyMapPartialAndAttributes
call SwitchToMapScriptsBank
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call ReadMapScripts
xor a ; do not skip object events
call ReadMapEvents
ret
LoadMapAttributes_SkipObjects::
call CopyMapPartialAndAttributes
call SwitchToMapScriptsBank
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call ReadMapScripts
ld a, TRUE ; skip object events
call ReadMapEvents
ret
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CopyMapPartialAndAttributes::
call CopyMapPartial
call SwitchToMapAttributesBank
call GetMapAttributesPointer
call CopyMapAttributes
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call GetMapConnections
ret
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ReadMapEvents::
push af
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ld hl, wMapEventsPointer
ld a, [hli]
ld h, [hl]
ld l, a
inc hl
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inc hl
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call ReadWarps
call ReadCoordEvents
call ReadBGEvents
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pop af
and a ; skip object events?
ret nz
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call ReadObjectEvents
ret
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ReadMapScripts::
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ld hl, wMapScriptsPointer
ld a, [hli]
ld h, [hl]
ld l, a
call ReadMapSceneScripts
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call ReadMapCallbacks
ret
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CopyMapAttributes::
ld de, wMapAttributes
ld c, wMapAttributesEnd - wMapAttributes
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.loop
ld a, [hli]
ld [de], a
inc de
dec c
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jr nz, .loop
ret
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GetMapConnections::
ld a, $ff
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ld [wNorthConnectedMapGroup], a
ld [wSouthConnectedMapGroup], a
ld [wWestConnectedMapGroup], a
ld [wEastConnectedMapGroup], a
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ld a, [wMapConnections]
ld b, a
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bit NORTH_F, b
jr z, .no_north
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ld de, wNorthMapConnection
call GetMapConnection
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.no_north
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bit SOUTH_F, b
jr z, .no_south
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ld de, wSouthMapConnection
call GetMapConnection
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.no_south
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bit WEST_F, b
jr z, .no_west
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ld de, wWestMapConnection
call GetMapConnection
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.no_west
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bit EAST_F, b
jr z, .no_east
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ld de, wEastMapConnection
call GetMapConnection
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.no_east
ret
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GetMapConnection::
; Load map connection struct at hl into de.
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ld c, wSouthMapConnection - wNorthMapConnection
.loop
ld a, [hli]
ld [de], a
inc de
dec c
jr nz, .loop
ret
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ReadMapSceneScripts::
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ld a, [hli] ; scene_script count
ld c, a
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ld [wCurMapSceneScriptCount], a
ld a, l
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ld [wCurMapSceneScriptsPointer], a
ld a, h
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ld [wCurMapSceneScriptsPointer + 1], a
ld a, c
and a
ret z
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ld bc, SCENE_SCRIPT_SIZE
call AddNTimes
ret
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ReadMapCallbacks::
ld a, [hli]
ld c, a
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ld [wCurMapCallbackCount], a
ld a, l
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ld [wCurMapCallbacksPointer], a
ld a, h
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ld [wCurMapCallbacksPointer + 1], a
ld a, c
and a
ret z
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ld bc, CALLBACK_SIZE
call AddNTimes
ret
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ReadWarps::
ld a, [hli]
ld c, a
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ld [wCurMapWarpCount], a
ld a, l
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ld [wCurMapWarpsPointer], a
ld a, h
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ld [wCurMapWarpsPointer + 1], a
ld a, c
and a
ret z
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ld bc, WARP_EVENT_SIZE
call AddNTimes
ret
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ReadCoordEvents::
ld a, [hli]
ld c, a
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ld [wCurMapCoordEventCount], a
ld a, l
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ld [wCurMapCoordEventsPointer], a
ld a, h
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ld [wCurMapCoordEventsPointer + 1], a
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ld a, c
and a
ret z
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ld bc, COORD_EVENT_SIZE
call AddNTimes
ret
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ReadBGEvents::
ld a, [hli]
ld c, a
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ld [wCurMapBGEventCount], a
ld a, l
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ld [wCurMapBGEventsPointer], a
ld a, h
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ld [wCurMapBGEventsPointer + 1], a
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ld a, c
and a
ret z
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ld bc, BG_EVENT_SIZE
call AddNTimes
ret
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ReadObjectEvents::
push hl
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call ClearObjectStructs
pop de
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ld hl, wMap1Object
ld a, [de]
inc de
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ld [wCurMapObjectEventCount], a
ld a, e
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ld [wCurMapObjectEventsPointer], a
ld a, d
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ld [wCurMapObjectEventsPointer + 1], a
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ld a, [wCurMapObjectEventCount]
call CopyMapObjectEvents
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; get NUM_OBJECTS - [wCurMapObjectEventCount]
ld a, [wCurMapObjectEventCount]
ld c, a
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ld a, NUM_OBJECTS ; - 1
sub c
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jr z, .skip
; jr c, .skip
; could have done "inc hl" instead
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ld bc, 1
add hl, bc
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; Fill the remaining sprite IDs and y coords with 0 and -1, respectively.
; Bleeds into wObjectMasks due to a bug. Uncomment the above subtraction
; to fix.
ld bc, MAPOBJECT_LENGTH
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.loop
ld [hl], 0
inc hl
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ld [hl], -1
dec hl
add hl, bc
dec a
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jr nz, .loop
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.skip
ld h, d
ld l, e
ret
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CopyMapObjectEvents::
and a
ret z
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ld c, a
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.loop
push bc
push hl
ld a, $ff
ld [hli], a
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ld b, OBJECT_EVENT_SIZE
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.loop2
ld a, [de]
inc de
ld [hli], a
dec b
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jr nz, .loop2
pop hl
ld bc, MAPOBJECT_LENGTH
add hl, bc
pop bc
dec c
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jr nz, .loop
ret
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ClearObjectStructs::
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ld hl, wObject1Struct
ld bc, OBJECT_LENGTH * (NUM_OBJECT_STRUCTS - 1)
xor a
call ByteFill
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; Just to make sure (this is rather pointless)
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ld hl, wObject1Struct
ld de, OBJECT_LENGTH
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ld c, NUM_OBJECT_STRUCTS - 1
xor a
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.loop
ld [hl], a
add hl, de
dec c
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jr nz, .loop
ret
GetWarpDestCoords::
call GetMapScriptsBank
rst Bankswitch
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ld hl, wMapEventsPointer
ld a, [hli]
ld h, [hl]
ld l, a
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rept 3 ; get to the warp coords
inc hl
endr
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ld a, [wWarpNumber]
dec a
ld c, a
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ld b, 0
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ld a, WARP_EVENT_SIZE
call AddNTimes
ld a, [hli]
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ld [wYCoord], a
ld a, [hli]
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ld [wXCoord], a
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; destination warp number
ld a, [hli]
cp -1
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jr nz, .skip
call .backup
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.skip
farcall GetMapScreenCoords
ret
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.backup
ld a, [wPrevWarp]
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ld [wBackupWarpNumber], a
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ld a, [wPrevMapGroup]
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ld [wBackupMapGroup], a
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ld a, [wPrevMapNumber]
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ld [wBackupMapNumber], a
ret
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LoadBlockData::
ld hl, wOverworldMapBlocks
ld bc, wOverworldMapBlocksEnd - wOverworldMapBlocks
ld a, 0
call ByteFill
call ChangeMap
call FillMapConnections
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ld a, MAPCALLBACK_TILES
call RunMapCallback
ret
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ChangeMap::
ldh a, [hROMBank]
push af
ld hl, wOverworldMapBlocks
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ld a, [wMapWidth]
ldh [hConnectedMapWidth], a
add $6
ldh [hConnectionStripLength], a
ld c, a
ld b, 0
add hl, bc
add hl, bc
add hl, bc
ld c, 3
add hl, bc
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ld a, [wMapBlocksBank]
rst Bankswitch
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ld a, [wMapBlocksPointer]
ld e, a
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ld a, [wMapBlocksPointer + 1]
ld d, a
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ld a, [wMapHeight]
ld b, a
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.row
push hl
ldh a, [hConnectedMapWidth]
ld c, a
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.col
ld a, [de]
inc de
ld [hli], a
dec c
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jr nz, .col
pop hl
ldh a, [hConnectionStripLength]
add l
ld l, a
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jr nc, .okay
inc h
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.okay
dec b
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jr nz, .row
pop af
rst Bankswitch
ret
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FillMapConnections::
; North
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ld a, [wNorthConnectedMapGroup]
cp $ff
jr z, .South
ld b, a
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ld a, [wNorthConnectedMapNumber]
ld c, a
call GetAnyMapBlocksBank
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ld a, [wNorthConnectionStripPointer]
ld l, a
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ld a, [wNorthConnectionStripPointer + 1]
ld h, a
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ld a, [wNorthConnectionStripLocation]
ld e, a
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ld a, [wNorthConnectionStripLocation + 1]
ld d, a
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ld a, [wNorthConnectionStripLength]
ldh [hConnectionStripLength], a
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ld a, [wNorthConnectedMapWidth]
ldh [hConnectedMapWidth], a
call FillNorthConnectionStrip
.South:
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ld a, [wSouthConnectedMapGroup]
cp $ff
jr z, .West
ld b, a
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ld a, [wSouthConnectedMapNumber]
ld c, a
call GetAnyMapBlocksBank
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ld a, [wSouthConnectionStripPointer]
ld l, a
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ld a, [wSouthConnectionStripPointer + 1]
ld h, a
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ld a, [wSouthConnectionStripLocation]
ld e, a
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ld a, [wSouthConnectionStripLocation + 1]
ld d, a
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ld a, [wSouthConnectionStripLength]
ldh [hConnectionStripLength], a
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ld a, [wSouthConnectedMapWidth]
ldh [hConnectedMapWidth], a
call FillSouthConnectionStrip
.West:
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ld a, [wWestConnectedMapGroup]
cp $ff
jr z, .East
ld b, a
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ld a, [wWestConnectedMapNumber]
ld c, a
call GetAnyMapBlocksBank
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ld a, [wWestConnectionStripPointer]
ld l, a
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ld a, [wWestConnectionStripPointer + 1]
ld h, a
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ld a, [wWestConnectionStripLocation]
ld e, a
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ld a, [wWestConnectionStripLocation + 1]
ld d, a
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ld a, [wWestConnectionStripLength]
ld b, a
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ld a, [wWestConnectedMapWidth]
ldh [hConnectionStripLength], a
call FillWestConnectionStrip
.East:
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ld a, [wEastConnectedMapGroup]
cp $ff
jr z, .Done
ld b, a
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ld a, [wEastConnectedMapNumber]
ld c, a
call GetAnyMapBlocksBank
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ld a, [wEastConnectionStripPointer]
ld l, a
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ld a, [wEastConnectionStripPointer + 1]
ld h, a
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ld a, [wEastConnectionStripLocation]
ld e, a
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ld a, [wEastConnectionStripLocation + 1]
ld d, a
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ld a, [wEastConnectionStripLength]
ld b, a
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ld a, [wEastConnectedMapWidth]
ldh [hConnectionStripLength], a
call FillEastConnectionStrip
.Done:
ret
FillNorthConnectionStrip::
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FillSouthConnectionStrip::
ld c, 3
.y
push de
push hl
ldh a, [hConnectionStripLength]
ld b, a
.x
ld a, [hli]
ld [de], a
inc de
dec b
jr nz, .x
pop hl
ldh a, [hConnectedMapWidth]
ld e, a
ld d, 0
add hl, de
pop de
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ld a, [wMapWidth]
add 6
add e
ld e, a
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jr nc, .okay
inc d
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.okay
dec c
jr nz, .y
ret
FillWestConnectionStrip::
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FillEastConnectionStrip::
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.loop
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ld a, [wMapWidth]
add 6
ldh [hConnectedMapWidth], a
push de
push hl
ld a, [hli]
ld [de], a
inc de
ld a, [hli]
ld [de], a
inc de
ld a, [hli]
ld [de], a
inc de
pop hl
ldh a, [hConnectionStripLength]
ld e, a
ld d, 0
add hl, de
pop de
ldh a, [hConnectedMapWidth]
add e
ld e, a
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jr nc, .okay
inc d
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.okay
dec b
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jr nz, .loop
ret
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LoadMapStatus::
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ld [wMapStatus], a
ret
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CallScript::
; Call a script at a:hl.
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ld [wScriptBank], a
ld a, l
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ld [wScriptPos], a
ld a, h
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ld [wScriptPos + 1], a
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ld a, PLAYEREVENT_MAPSCRIPT
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ld [wScriptRunning], a
scf
ret
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CallMapScript::
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; Call a script at hl in the current bank if there isn't already a script running
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ld a, [wScriptRunning]
and a
ret nz
call GetMapScriptsBank
jr CallScript
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RunMapCallback::
; Will run the first callback found with execution index equal to a.
ld b, a
ldh a, [hROMBank]
push af
call SwitchToMapScriptsBank
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call .FindCallback
jr nc, .done
call GetMapScriptsBank
ld b, a
ld d, h
ld e, l
call ExecuteCallbackScript
.done
pop af
rst Bankswitch
ret
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.FindCallback:
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ld a, [wCurMapCallbackCount]
ld c, a
and a
ret z
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ld hl, wCurMapCallbacksPointer
ld a, [hli]
ld h, [hl]
ld l, a
or h
ret z
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ld de, CALLBACK_SIZE
.loop
ld a, [hl]
cp b
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jr z, .found
add hl, de
dec c
jr nz, .loop
xor a
ret
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.found
inc hl
ld a, [hli]
ld h, [hl]
ld l, a
scf
ret
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ExecuteCallbackScript::
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; Do map callback de and return to script bank b.
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farcall CallCallback
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ld a, [wScriptMode]
push af
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ld hl, wScriptFlags
ld a, [hl]
push af
set 1, [hl]
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farcall EnableScriptMode
farcall ScriptEvents
pop af
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ld [wScriptFlags], a
pop af
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ld [wScriptMode], a
ret
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MapTextbox::
ldh a, [hROMBank]
push af
ld a, b
rst Bankswitch
push hl
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call SpeechTextbox
call SafeUpdateSprites
ld a, 1
ldh [hOAMUpdate], a
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call ApplyTilemap
pop hl
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call PrintTextboxText
xor a
ldh [hOAMUpdate], a
pop af
rst Bankswitch
ret
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Call_a_de::
; Call a:de.
ldh [hBuffer], a
ldh a, [hROMBank]
push af
ldh a, [hBuffer]
rst Bankswitch
call .de
pop af
rst Bankswitch
ret
.de
push de
ret
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GetMovementData::
; Initialize the movement data for object c at b:hl
ldh a, [hROMBank]
push af
ld a, b
rst Bankswitch
ld a, c
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call LoadMovementDataPointer
pop hl
ld a, h
rst Bankswitch
ret
GetScriptByte::
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; Return byte at wScriptBank:wScriptPos in a.
push hl
push bc
ldh a, [hROMBank]
push af
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ld a, [wScriptBank]
rst Bankswitch
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ld hl, wScriptPos
ld c, [hl]
inc hl
ld b, [hl]
ld a, [bc]
inc bc
ld [hl], b
dec hl
ld [hl], c
ld b, a
pop af
rst Bankswitch
ld a, b
pop bc
pop hl
ret
ObjectEvent::
jumptextfaceplayer ObjectEventText
ObjectEventText::
text_far _ObjectEventText
text_end
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BGEvent::
jumptext BGEventText
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BGEventText::
text_far _BGEventText
text_end
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CoordinatesEvent::
jumptext CoordinatesEventText
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CoordinatesEventText::
text_far _CoordinatesEventText
text_end
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CheckObjectMask::
ldh a, [hMapObjectIndexBuffer]
ld e, a
ld d, $0
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ld hl, wObjectMasks
add hl, de
ld a, [hl]
ret
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MaskObject::
ldh a, [hMapObjectIndexBuffer]
ld e, a
ld d, $0
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ld hl, wObjectMasks
add hl, de
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ld [hl], -1 ; , masked
ret
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UnmaskObject::
ldh a, [hMapObjectIndexBuffer]
ld e, a
ld d, $0
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ld hl, wObjectMasks
add hl, de
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ld [hl], 0 ; unmasked
ret
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ScrollMapUp::
hlcoord 0, 0
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ld de, wBGMapBuffer
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call BackupBGMapRow
ld c, 2 * SCREEN_WIDTH
call ScrollBGMapPalettes
ld a, [wBGMapAnchor]
ld e, a
ld a, [wBGMapAnchor + 1]
ld d, a
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call UpdateBGMapRow
ld a, $1
ldh [hBGMapUpdate], a
ret
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ScrollMapDown::
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hlcoord 0, SCREEN_HEIGHT - 2
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ld de, wBGMapBuffer
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call BackupBGMapRow
ld c, 2 * SCREEN_WIDTH
call ScrollBGMapPalettes
ld a, [wBGMapAnchor]
ld l, a
ld a, [wBGMapAnchor + 1]
ld h, a
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ld bc, BG_MAP_WIDTH tiles
add hl, bc
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; cap d at HIGH(vBGMap0)
ld a, h
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and %00000011
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or HIGH(vBGMap0)
ld e, l
ld d, a
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call UpdateBGMapRow
ld a, $1
ldh [hBGMapUpdate], a
ret
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ScrollMapLeft::
hlcoord 0, 0
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ld de, wBGMapBuffer
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call BackupBGMapColumn
ld c, 2 * SCREEN_HEIGHT
call ScrollBGMapPalettes
ld a, [wBGMapAnchor]
ld e, a
ld a, [wBGMapAnchor + 1]
ld d, a
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call UpdateBGMapColumn
ld a, $1
ldh [hBGMapUpdate], a
ret
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ScrollMapRight::
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hlcoord SCREEN_WIDTH - 2, 0
2018-01-23 14:39:09 -08:00
ld de, wBGMapBuffer
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call BackupBGMapColumn
ld c, 2 * SCREEN_HEIGHT
call ScrollBGMapPalettes
ld a, [wBGMapAnchor]
ld e, a
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and %11100000
ld b, a
ld a, e
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add SCREEN_HEIGHT
and %00011111
or b
ld e, a
ld a, [wBGMapAnchor + 1]
ld d, a
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call UpdateBGMapColumn
ld a, $1
ldh [hBGMapUpdate], a
ret
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BackupBGMapRow::
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ld c, 2 * SCREEN_WIDTH
.loop
ld a, [hli]
ld [de], a
inc de
dec c
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jr nz, .loop
ret
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BackupBGMapColumn::
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ld c, SCREEN_HEIGHT
.loop
ld a, [hli]
ld [de], a
inc de
ld a, [hl]
ld [de], a
inc de
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ld a, SCREEN_WIDTH - 1
add l
ld l, a
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jr nc, .skip
inc h
2015-11-12 21:49:27 -08:00
.skip
dec c
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jr nz, .loop
ret
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UpdateBGMapRow::
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ld hl, wBGMapBufferPtrs
push de
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call .iteration
pop de
ld a, BG_MAP_WIDTH
add e
ld e, a
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.iteration
ld c, 10
.loop
ld a, e
ld [hli], a
ld a, d
ld [hli], a
ld a, e
inc a
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inc a
and $1f
ld b, a
ld a, e
and $e0
or b
ld e, a
dec c
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jr nz, .loop
ld a, SCREEN_WIDTH
ldh [hBGMapTileCount], a
ret
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UpdateBGMapColumn::
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ld hl, wBGMapBufferPtrs
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ld c, SCREEN_HEIGHT
.loop
ld a, e
ld [hli], a
ld a, d
ld [hli], a
ld a, BG_MAP_WIDTH
add e
ld e, a
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jr nc, .skip
inc d
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; cap d at HIGH(vBGMap0)
ld a, d
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and %11
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or HIGH(vBGMap0)
ld d, a
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.skip
dec c
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jr nz, .loop
ld a, SCREEN_HEIGHT
ldh [hBGMapTileCount], a
ret
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Unreferenced_Function2816::
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ld hl, wBGMapBuffer
ld bc, wBGMapBufferEnd - wBGMapBuffer
xor a
call ByteFill
ret
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LoadTilesetGFX::
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ld hl, wTilesetAddress
ld a, [hli]
ld h, [hl]
ld l, a
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ld a, [wTilesetBank]
ld e, a
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ldh a, [rSVBK]
push af
ld a, BANK(wDecompressScratch)
ldh [rSVBK], a
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ld a, e
ld de, wDecompressScratch
call FarDecompress
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ld hl, wDecompressScratch
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ld de, vTiles2
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ld bc, $60 tiles
call CopyBytes
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ldh a, [rVBK]
push af
ld a, BANK(vTiles5)
ldh [rVBK], a
2015-11-12 21:49:27 -08:00
2017-12-09 11:22:58 -08:00
ld hl, wDecompressScratch + $60 tiles
ld de, vTiles5
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ld bc, $60 tiles
call CopyBytes
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pop af
ldh [rVBK], a
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pop af
ldh [rSVBK], a
; These tilesets support dynamic per-mapgroup roof tiles.
2018-01-23 14:39:09 -08:00
ld a, [wMapTileset]
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cp TILESET_JOHTO
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jr z, .load_roof
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cp TILESET_JOHTO_MODERN
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jr z, .load_roof
cp TILESET_BATTLE_TOWER_OUTSIDE
jr z, .load_roof
jr .skip_roof
.load_roof
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farcall LoadMapGroupRoof
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.skip_roof
xor a
ldh [hTileAnimFrame], a
ret
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BufferScreen::
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ld hl, wOverworldMapAnchor
ld a, [hli]
ld h, [hl]
ld l, a
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ld de, wScreenSave
ld c, SCREEN_META_HEIGHT
ld b, SCREEN_META_WIDTH
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.row
push bc
push hl
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.col
ld a, [hli]
ld [de], a
inc de
dec b
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jr nz, .col
pop hl
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ld a, [wMapWidth]
add 6
ld c, a
ld b, 0
add hl, bc
pop bc
dec c
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jr nz, .row
ret
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SaveScreen::
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ld hl, wOverworldMapAnchor
ld a, [hli]
ld h, [hl]
ld l, a
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ld de, wScreenSave
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ld a, [wMapWidth]
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add 6
ldh [hMapObjectIndexBuffer], a
ld a, [wPlayerStepDirection]
and a
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jr z, .down
cp UP
jr z, .up
cp LEFT
jr z, .left
cp RIGHT
jr z, .right
ret
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.up
ld de, wScreenSave + SCREEN_META_WIDTH
ldh a, [hMapObjectIndexBuffer]
ld c, a
ld b, 0
add hl, bc
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jr .vertical
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.down
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ld de, wScreenSave
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.vertical
ld b, SCREEN_META_WIDTH
ld c, SCREEN_META_HEIGHT - 1
jr SaveScreen_LoadConnection
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.left
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ld de, wScreenSave + 1
inc hl
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jr .horizontal
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.right
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ld de, wScreenSave
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.horizontal
ld b, SCREEN_META_WIDTH - 1
ld c, SCREEN_META_HEIGHT
jr SaveScreen_LoadConnection
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LoadConnectionBlockData::
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ld hl, wOverworldMapAnchor
ld a, [hli]
ld h, [hl]
ld l, a
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ld a, [wMapWidth]
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add 6
ldh [hConnectionStripLength], a
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ld de, wScreenSave
ld b, SCREEN_META_WIDTH
ld c, SCREEN_META_HEIGHT
SaveScreen_LoadConnection::
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.row
push bc
push hl
push de
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.col
ld a, [de]
inc de
ld [hli], a
dec b
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jr nz, .col
pop de
ld a, e
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add 6
ld e, a
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jr nc, .okay
inc d
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.okay
pop hl
ldh a, [hConnectionStripLength]
ld c, a
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ld b, 0
add hl, bc
pop bc
dec c
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jr nz, .row
ret
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GetMovementPermissions::
xor a
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ld [wTilePermissions], a
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call .LeftRight
call .UpDown
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; get coords of current tile
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ld a, [wPlayerStandingMapX]
ld d, a
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ld a, [wPlayerStandingMapY]
ld e, a
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call GetCoordTile
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ld [wPlayerStandingTile], a
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call .CheckHiNybble
ret nz
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ld a, [wPlayerStandingTile]
and 7
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ld hl, .MovementPermissionsData
add l
ld l, a
ld a, 0
adc h
ld h, a
ld a, [hl]
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ld hl, wTilePermissions
or [hl]
ld [hl], a
ret
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.MovementPermissionsData:
db DOWN_MASK
db UP_MASK
db LEFT_MASK
db RIGHT_MASK
db DOWN_MASK | RIGHT_MASK
db UP_MASK | RIGHT_MASK
db DOWN_MASK | LEFT_MASK
db UP_MASK | LEFT_MASK
.UpDown:
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ld a, [wPlayerStandingMapX]
ld d, a
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ld a, [wPlayerStandingMapY]
ld e, a
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push de
inc e
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call GetCoordTile
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ld [wTileDown], a
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call .Down
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pop de
dec e
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call GetCoordTile
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ld [wTileUp], a
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call .Up
ret
.LeftRight:
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ld a, [wPlayerStandingMapX]
ld d, a
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ld a, [wPlayerStandingMapY]
ld e, a
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push de
dec d
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call GetCoordTile
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ld [wTileLeft], a
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call .Left
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pop de
inc d
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call GetCoordTile
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ld [wTileRight], a
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call .Right
ret
.Down:
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call .CheckHiNybble
ret nz
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ld a, [wTileDown]
and %111
cp COLL_UP_WALL & %111 ; COLL_UP_BUOY & %111
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jr z, .ok_down
cp COLL_UP_RIGHT_WALL & %111 ; COLL_UP_RIGHT_BUOY & %111
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jr z, .ok_down
cp COLL_UP_LEFT_WALL & %111 ; COLL_UP_LEFT_BUOY & %111
ret nz
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.ok_down
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ld a, [wTilePermissions]
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or FACE_DOWN
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ld [wTilePermissions], a
ret
.Up:
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call .CheckHiNybble
ret nz
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ld a, [wTileUp]
and %111
cp COLL_DOWN_WALL & %111 ; COLL_DOWN_BUOY & %111
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jr z, .ok_up
cp COLL_DOWN_RIGHT_WALL & %111 ; COLL_DOWN_RIGHT_BUOY & %111
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jr z, .ok_up
cp COLL_DOWN_LEFT_WALL & %111 ; COLL_DOWN_LEFT_BUOY & %111
ret nz
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.ok_up
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ld a, [wTilePermissions]
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or FACE_UP
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ld [wTilePermissions], a
ret
.Right:
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call .CheckHiNybble
ret nz
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ld a, [wTileRight]
and %111
cp COLL_LEFT_WALL & %111 ; COLL_LEFT_BUOY & %111
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jr z, .ok_right
cp COLL_DOWN_LEFT_WALL & %111 ; COLL_DOWN_LEFT_BUOY & %111
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jr z, .ok_right
cp COLL_UP_LEFT_WALL & %111 ; COLL_UP_LEFT_BUOY & %111
ret nz
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.ok_right
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ld a, [wTilePermissions]
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or FACE_RIGHT
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ld [wTilePermissions], a
ret
.Left:
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call .CheckHiNybble
ret nz
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ld a, [wTileLeft]
and %111
cp COLL_RIGHT_WALL & %111 ; COLL_RIGHT_BUOY & %111
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jr z, .ok_left
cp COLL_DOWN_RIGHT_WALL & %111 ; COLL_DOWN_RIGHT_BUOY & %111
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jr z, .ok_left
cp COLL_UP_RIGHT_WALL & %111 ; COLL_UP_RIGHT_BUOY & %111
ret nz
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.ok_left
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ld a, [wTilePermissions]
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or FACE_LEFT
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ld [wTilePermissions], a
ret
.CheckHiNybble:
and $f0
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cp HI_NYBBLE_SIDE_WALLS
ret z
cp HI_NYBBLE_SIDE_BUOYS
ret
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GetFacingTileCoord::
; Return map coordinates in (d, e) and tile id in a
; of the tile the player is facing.
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ld a, [wPlayerDirection]
and %1100
srl a
srl a
ld l, a
ld h, 0
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add hl, hl
add hl, hl
ld de, .Directions
add hl, de
ld d, [hl]
inc hl
ld e, [hl]
inc hl
ld a, [hli]
ld h, [hl]
ld l, a
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ld a, [wPlayerStandingMapX]
add d
ld d, a
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ld a, [wPlayerStandingMapY]
add e
ld e, a
ld a, [hl]
ret
.Directions:
; x, y
db 0, 1
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dw wTileDown
db 0, -1
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dw wTileUp
db -1, 0
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dw wTileLeft
db 1, 0
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dw wTileRight
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GetCoordTile::
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; Get the collision byte for tile d, e
call GetBlockLocation
ld a, [hl]
and a
jr z, .nope
ld l, a
ld h, $0
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add hl, hl
add hl, hl
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ld a, [wTilesetCollisionAddress]
ld c, a
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ld a, [wTilesetCollisionAddress + 1]
ld b, a
add hl, bc
rr d
jr nc, .nocarry
inc hl
.nocarry
rr e
jr nc, .nocarry2
inc hl
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inc hl
.nocarry2
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ld a, [wTilesetCollisionBank]
call GetFarByte
ret
.nope
ld a, -1
ret
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GetBlockLocation::
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ld a, [wMapWidth]
add 6
ld c, a
ld b, 0
ld hl, wOverworldMapBlocks + 1
add hl, bc
ld a, e
srl a
jr z, .nope
and a
.loop
srl a
jr nc, .ok
add hl, bc
.ok
sla c
rl b
and a
jr nz, .loop
.nope
ld c, d
srl c
ld b, 0
add hl, bc
ret
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CheckFacingBGEvent::
call GetFacingTileCoord
; Load facing into b.
ld b, a
; Convert the coordinates at de to within-boundaries coordinates.
ld a, d
sub 4
ld d, a
ld a, e
sub 4
ld e, a
; If there are no BG events, we don't need to be here.
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ld a, [wCurMapBGEventCount]
and a
ret z
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ld c, a
ldh a, [hROMBank]
push af
call SwitchToMapScriptsBank
call CheckIfFacingTileCoordIsBGEvent
pop hl
ld a, h
rst Bankswitch
ret
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CheckIfFacingTileCoordIsBGEvent::
; Checks to see if you are facing a BG event. If so, copies it into wCurBGEvent and sets carry.
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ld hl, wCurMapBGEventsPointer
ld a, [hli]
ld h, [hl]
ld l, a
.loop
push hl
ld a, [hli]
cp e
jr nz, .next
ld a, [hli]
cp d
jr nz, .next
jr .copysign
.next
pop hl
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ld a, BG_EVENT_SIZE
add l
ld l, a
jr nc, .nocarry
inc h
.nocarry
dec c
jr nz, .loop
xor a
ret
.copysign
pop hl
ld de, wCurBGEvent
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ld bc, BG_EVENT_SIZE
call CopyBytes
scf
ret
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CheckCurrentMapCoordEvents::
; If there are no coord events, we don't need to be here.
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ld a, [wCurMapCoordEventCount]
and a
ret z
; Copy the coord event count into c.
ld c, a
ldh a, [hROMBank]
push af
call SwitchToMapScriptsBank
call .CoordEventCheck
pop hl
ld a, h
rst Bankswitch
ret
.CoordEventCheck:
; Checks to see if you are standing on a coord event. If yes, copies the event to wCurCoordEvent and sets carry.
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ld hl, wCurMapCoordEventsPointer
ld a, [hli]
ld h, [hl]
ld l, a
; Load the active scene ID into b
call CheckScenes
ld b, a
; Load your current coordinates into de. This will be used to check if your position is in the coord event table for the current map.
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ld a, [wPlayerStandingMapX]
sub 4
ld d, a
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ld a, [wPlayerStandingMapY]
sub 4
ld e, a
.loop
push hl
ld a, [hli]
cp b
jr z, .got_id
cp -1
jr nz, .next
.got_id
ld a, [hli]
cp e
jr nz, .next
ld a, [hli]
cp d
jr nz, .next
jr .copy_coord_event
.next
pop hl
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ld a, COORD_EVENT_SIZE
add l
ld l, a
jr nc, .nocarry
inc h
.nocarry
dec c
jr nz, .loop
xor a
ret
.copy_coord_event
pop hl
ld de, wCurCoordEvent
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ld bc, COORD_EVENT_SIZE
call CopyBytes
scf
ret
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FadeToMenu::
xor a
ldh [hBGMapMode], a
call LoadStandardMenuHeader
farcall FadeOutPalettes
call ClearSprites
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call DisableSpriteUpdates
ret
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CloseSubmenu::
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call ClearBGPalettes
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call ReloadTilesetAndPalettes
call UpdateSprites
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call Call_ExitMenu
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call ret_d90
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jr FinishExitMenu
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ExitAllMenus::
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call ClearBGPalettes
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call Call_ExitMenu
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call ReloadTilesetAndPalettes
call UpdateSprites
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call ret_d90
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FinishExitMenu::
ld b, SCGB_MAPPALS
call GetSGBLayout
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farcall LoadOW_BGPal7
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call WaitBGMap2
farcall FadeInPalettes
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call EnableSpriteUpdates
ret
ReturnToMapWithSpeechTextbox::
push af
ld a, $1
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ld [wSpriteUpdatesEnabled], a
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call ClearBGPalettes
call ClearSprites
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call ReloadTilesetAndPalettes
hlcoord 0, 12
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lb bc, 4, 18
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call Textbox
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ld hl, wVramState
set 0, [hl]
call UpdateSprites
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call WaitBGMap2
ld b, SCGB_MAPPALS
call GetSGBLayout
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farcall LoadOW_BGPal7
call UpdateTimePals
call DelayFrame
ld a, $1
ldh [hMapAnims], a
pop af
ret
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ReloadTilesetAndPalettes::
call DisableLCD
call ClearSprites
farcall RefreshSprites
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call LoadStandardFont
call LoadFontsExtra
ldh a, [hROMBank]
push af
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ld a, [wMapGroup]
ld b, a
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ld a, [wMapNumber]
ld c, a
call SwitchToAnyMapAttributesBank
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farcall UpdateTimeOfDayPal
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call OverworldTextModeSwitch
call LoadTilesetGFX
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ld a, 9
call SkipMusic
pop af
rst Bankswitch
call EnableLCD
ret
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GetMapPointer::
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ld a, [wMapGroup]
ld b, a
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ld a, [wMapNumber]
ld c, a
GetAnyMapPointer::
; Prior to calling this function, you must have switched banks so that
; MapGroupPointers is visible.
; inputs:
; b = map group, c = map number
; outputs:
; hl points to the map within its group
push bc ; save map number for later
; get pointer to map group
dec b
ld c, b
ld b, 0
ld hl, MapGroupPointers
add hl, bc
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add hl, bc
ld a, [hli]
ld h, [hl]
ld l, a
pop bc ; restore map number
; find the cth map within the group
dec c
ld b, 0
ld a, 9
call AddNTimes
ret
GetMapField::
; Extract data from the current map's group entry.
; inputs:
; de = offset of desired data within the map (a MAP_* constant)
; outputs:
; bc = data from the current map's field
; (e.g., de = MAP_TILESET would return a pointer to the tileset id)
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ld a, [wMapGroup]
ld b, a
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ld a, [wMapNumber]
ld c, a
GetAnyMapField::
; bankswitch
ldh a, [hROMBank]
push af
ld a, BANK(MapGroupPointers)
rst Bankswitch
call GetAnyMapPointer
add hl, de
ld c, [hl]
inc hl
ld b, [hl]
; bankswitch back
pop af
rst Bankswitch
ret
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SwitchToMapAttributesBank::
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ld a, [wMapGroup]
ld b, a
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ld a, [wMapNumber]
ld c, a
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SwitchToAnyMapAttributesBank::
call GetAnyMapAttributesBank
rst Bankswitch
ret
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GetMapAttributesBank::
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ld a, [wMapGroup]
ld b, a
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ld a, [wMapNumber]
ld c, a
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GetAnyMapAttributesBank::
push hl
push de
ld de, MAP_MAPATTRIBUTES_BANK
call GetAnyMapField
ld a, c
pop de
pop hl
ret
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CopyMapPartial::
; Copy map data bank, tileset, environment, and map data address
; from the current map's entry within its group.
ldh a, [hROMBank]
push af
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ld a, BANK(MapGroupPointers)
rst Bankswitch
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call GetMapPointer
ld de, wMapPartial
ld bc, wMapPartialEnd - wMapPartial
call CopyBytes
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pop af
rst Bankswitch
ret
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SwitchToMapScriptsBank::
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ld a, [wMapScriptsBank]
rst Bankswitch
ret
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GetMapScriptsBank::
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ld a, [wMapScriptsBank]
ret
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GetAnyMapBlocksBank::
; Return the blockdata bank for group b map c.
push hl
push de
push bc
push bc
ld de, MAP_MAPATTRIBUTES
call GetAnyMapField
ld l, c
ld h, b
pop bc
push hl
ld de, MAP_MAPATTRIBUTES_BANK
call GetAnyMapField
pop hl
ld de, MAP_MAPATTRIBUTES ; blockdata bank
add hl, de
ld a, c
call GetFarByte
rst Bankswitch
pop bc
pop de
pop hl
ret
GetMapAttributesPointer::
; returns the current map's data pointer in hl.
push bc
push de
ld de, MAP_MAPATTRIBUTES
call GetMapField
ld l, c
ld h, b
pop de
pop bc
ret
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GetMapEnvironment::
push hl
push de
push bc
ld de, MAP_ENVIRONMENT
call GetMapField
ld a, c
pop bc
pop de
pop hl
ret
ret ; unused
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GetAnyMapEnvironment::
push hl
push de
push bc
ld de, MAP_ENVIRONMENT
call GetAnyMapField
ld a, c
pop bc
pop de
pop hl
ret
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GetAnyMapTileset::
ld de, MAP_TILESET
call GetAnyMapField
ld a, c
ret
GetWorldMapLocation::
; given a map group/id in bc, return its location on the Pokégear map.
push hl
push de
push bc
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ld de, MAP_LOCATION
call GetAnyMapField
ld a, c
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pop bc
pop de
pop hl
ret
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GetMapMusic::
push hl
push bc
ld de, MAP_MUSIC
call GetMapField
ld a, c
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cp MUSIC_MAHOGANY_MART
jr z, .mahoganymart
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bit RADIO_TOWER_MUSIC_F, c
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jr nz, .radiotower
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farcall Function8b342
ld e, c
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ld d, 0
.done
pop bc
pop hl
ret
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.radiotower
ld a, [wStatusFlags2]
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bit STATUSFLAGS2_ROCKETS_IN_RADIO_TOWER_F, a
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jr z, .clearedradiotower
ld de, MUSIC_ROCKET_OVERTURE
jr .done
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.clearedradiotower
; the rest of the byte
ld a, c
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and RADIO_TOWER_MUSIC - 1
ld e, a
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ld d, 0
jr .done
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.mahoganymart
ld a, [wStatusFlags2]
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bit STATUSFLAGS2_ROCKETS_IN_MAHOGANY_F, a
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jr z, .clearedmahogany
ld de, MUSIC_ROCKET_HIDEOUT
jr .done
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.clearedmahogany
ld de, MUSIC_CHERRYGROVE_CITY
jr .done
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GetMapTimeOfDay::
call GetPhoneServiceTimeOfDayByte
and $f
ret
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GetMapPhoneService::
call GetPhoneServiceTimeOfDayByte
and $f0
swap a
ret
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GetPhoneServiceTimeOfDayByte::
push hl
push bc
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ld de, MAP_PALETTE
call GetMapField
ld a, c
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pop bc
pop hl
ret
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GetFishingGroup::
push de
push hl
push bc
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ld de, MAP_FISHGROUP
call GetMapField
ld a, c
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pop bc
pop hl
pop de
ret
LoadMapTileset::
push hl
push bc
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ld hl, Tilesets
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ld bc, wTilesetEnd - wTileset
ld a, [wMapTileset]
call AddNTimes
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ld de, wTilesetBank
ld bc, wTilesetEnd - wTileset
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ld a, BANK(Tilesets)
call FarCopyBytes
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pop bc
pop hl
ret
Small home/ reorganization Time to move everything out of home.asm: - InexplicablyEmptyFunction was moved to home/map.asm - The wDebugFlags functions and xor_a brothers were moved to home/flag.asm because they're all flag-related. - ret_2f3e was moved into home/region.asm - The register alias sisters were moved to a new file called home/call_regs.asm - IsInArray and SkipNames were joined by AddNTimes from home/math.asm into home/array.asm, as they're all used to index arrays. - CallPointerAt was moved into home/print_text.asm because given the contents of that file it doesn't feel very out of place (that file isn't very aptly named...) - CountSetBits was moved into home/pokedex_flags.asm because it's unique use is counting the amount of seen/caught mon in the podedex. GetWeekday was pulled into this by proximity. Other changes were also made: - PushLYOverrides was moved from home/sprite_anims.asm to home/battle.asm, because it's almost exclusively used for battle animations, with the lone exception being the Magnet Train. - home/copy.asm was renamed to home/gfx.asm, as it's all gfx-related - home/copy2.asm was renamed to home/copy.asm, now it's the only file called copy. - SetHPPal and GetHPPal were moved from home/hp_pals.asm to home/tilemap.asm, as they're attrmap related, like many functions in that file are. - home/rtc.asm was renamed to home/time_palettes.asm, as it had very little to do with the RTC at all, all RTC functions being in home/time.asm - home/handshake.asm was renamed to home/printer.asm. - home/mon_data_2.asm was renamed to home/mon_party.asm.
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InexplicablyEmptyFunction::
; unused
; Inexplicably empty.
; Seen in PredefPointers.
rept 16
nop
endr
ret