pokecrystal-board/engine/events_3.asm
Remy Oukaour 31cce83e9b Move lots of data tables into individual data/ files
(This is not expected to be their final location, but it makes them easier to relocate when necessary, and easier for users to edit until the whole project's file structure is finalized.)
2017-12-11 14:23:18 -05:00

690 lines
9.5 KiB
NASM
Executable File

ReturnFromMapSetupScript:: ; b8000
xor a
ld [hBGMapMode], a
; For some reson, GameFreak chose to use a callba here instead of just falling through.
; No other function in the game references the function at 2E:400A, here labeled
; ReturnFromMapSetupScript.inefficientcallba.
callba .inefficientcallba ; this is a waste of 6 ROM bytes and 6 stack bytes
ret
; b800a
.inefficientcallba ; b800a
ld a, [MapGroup]
ld b, a
ld a, [MapNumber]
ld c, a
call GetWorldMapLocation
ld [wCurrentLandmark], a
call .CheckNationalParkGate
jr z, .nationalparkgate
call GetMapPermission
cp GATE
jr nz, .not_gate
.nationalparkgate
ld a, -1
ld [wCurrentLandmark], a
.not_gate
ld hl, wEnteredMapFromContinue
bit 1, [hl]
res 1, [hl]
jr nz, .dont_do_map_sign
call .CheckMovingWithinLandmark
jr z, .dont_do_map_sign
ld a, [wCurrentLandmark]
ld [wPreviousLandmark], a
call .CheckSpecialMap
jr z, .dont_do_map_sign
; Display for 60 frames
ld a, 60
ld [wLandmarkSignTimer], a
call LoadMapNameSignGFX
call InitMapNameFrame
callba HDMATransfer_OnlyTopFourRows
ret
.dont_do_map_sign
ld a, [wCurrentLandmark]
ld [wPreviousLandmark], a
ld a, $90
ld [rWY], a
ld [hWY], a
xor a
ld [hLCDCPointer], a
ret
; b8064
.CheckMovingWithinLandmark: ; b8064
ld a, [wCurrentLandmark]
ld c, a
ld a, [wPreviousLandmark]
cp c
ret z
cp SPECIAL_MAP
ret
; b8070
.CheckSpecialMap: ; b8070
cp -1
ret z
cp SPECIAL_MAP
ret z
cp RADIO_TOWER
ret z
cp LAV_RADIO_TOWER
ret z
cp UNDERGROUND
ret z
cp INDIGO_PLATEAU
ret z
cp POWER_PLANT
ret z
ld a, $1
and a
ret
; b8089
.CheckNationalParkGate: ; b8089
ld a, [MapGroup]
cp GROUP_ROUTE_35_NATIONAL_PARK_GATE
ret nz
ld a, [MapNumber]
cp MAP_ROUTE_35_NATIONAL_PARK_GATE
ret z
cp MAP_ROUTE_36_NATIONAL_PARK_GATE
ret
; b8098
PlaceMapNameSign:: ; b8098 (2e:4098)
ld hl, wLandmarkSignTimer
ld a, [hl]
and a
jr z, .disappear
dec [hl]
cp 60
ret z
cp 59
jr nz, .skip2
call InitMapNameFrame
call PlaceMapNameCenterAlign
callba HDMATransfer_OnlyTopFourRows
.skip2
ld a, $80
ld a, $70
ld [rWY], a
ld [hWY], a
ret
.disappear
ld a, $90
ld [rWY], a
ld [hWY], a
xor a
ld [hLCDCPointer], a
ret
LoadMapNameSignGFX: ; b80c6
ld de, MapEntryFrameGFX
ld hl, VTiles2 tile $60
lb bc, BANK(MapEntryFrameGFX), $e
call Get2bpp
ret
; b80d3
InitMapNameFrame: ; b80d3
hlcoord 0, 0
ld b, 2
ld c, 18
call InitMapSignAttrMap
call PlaceMapNameFrame
ret
; b80e1
PlaceMapNameCenterAlign: ; b80e1 (2e:40e1)
ld a, [wCurrentLandmark]
ld e, a
callba GetLandmarkName
call .GetNameLength
ld a, SCREEN_WIDTH
sub c
srl a
ld b, $0
ld c, a
hlcoord 0, 2
add hl, bc
ld de, StringBuffer1
call PlaceString
ret
.GetNameLength: ; b8101 (2e:4101)
ld c, 0
push hl
ld hl, StringBuffer1
.loop
ld a, [hli]
cp "@"
jr z, .stop
cp "%"
jr z, .loop
inc c
jr .loop
.stop
pop hl
ret
InitMapSignAttrMap: ; b8115
ld de, AttrMap - TileMap
add hl, de
inc b
inc b
inc c
inc c
ld a, $87
.loop
push bc
push hl
.inner_loop
ld [hli], a
dec c
jr nz, .inner_loop
pop hl
ld de, SCREEN_WIDTH
add hl, de
pop bc
dec b
jr nz, .loop
ret
; b812f
PlaceMapNameFrame: ; b812f
hlcoord 0, 0
; top left
ld a, $61
ld [hli], a
; top row
ld a, $62
call .FillTopBottom
; top right
ld a, $64
ld [hli], a
; left, first line
ld a, $65
ld [hli], a
; first line
call .FillMiddle
; right, first line
ld a, $6b
ld [hli], a
; left, second line
ld a, $66
ld [hli], a
; second line
call .FillMiddle
; right, second line
ld a, $6c
ld [hli], a
; bottom left
ld a, $67
ld [hli], a
; bottom
ld a, $68
call .FillTopBottom
; bottom right
ld a, $6a
ld [hl], a
ret
; b815b
.FillMiddle: ; b815b
ld c, 18
ld a, $6d
.loop
ld [hli], a
dec c
jr nz, .loop
ret
; b8164
.FillTopBottom: ; b8164
ld c, 5
jr .enterloop
.continueloop
ld [hli], a
ld [hli], a
.enterloop
inc a
ld [hli], a
ld [hli], a
dec a
dec c
jr nz, .continueloop
ret
; b8172
CheckForHiddenItems: ; b8172
; Checks to see if there are hidden items on the screen that have not yet been found. If it finds one, returns carry.
call GetMapScriptHeaderBank
ld [Buffer1], a
; Get the coordinate of the bottom right corner of the screen, and load it in Buffer3/Buffer4.
ld a, [XCoord]
add SCREEN_WIDTH / 4
ld [Buffer4], a
ld a, [YCoord]
add SCREEN_HEIGHT / 4
ld [Buffer3], a
; Get the pointer for the first signpost header in the map...
ld hl, wCurrentMapSignpostHeaderPointer
ld a, [hli]
ld h, [hl]
ld l, a
; ... before even checking to see if there are any signposts on this map.
ld a, [wCurrentMapSignpostCount]
and a
jr z, .nosignpostitems
; For i = 1:wCurrentMapSignpostCount...
.loop
; Store the counter in Buffer2, and store the signpost header pointer in the stack.
ld [Buffer2], a
push hl
; Get the Y coordinate of the signpost.
call .GetFarByte
ld e, a
; Is the Y coordinate of the signpost on the screen? If not, go to the next signpost.
ld a, [Buffer3]
sub e
jr c, .next
cp SCREEN_HEIGHT / 2
jr nc, .next
; Is the X coordinate of the signpost on the screen? If not, go to the next signpost.
call .GetFarByte
ld d, a
ld a, [Buffer4]
sub d
jr c, .next
cp SCREEN_WIDTH / 2
jr nc, .next
; Is this signpost a hidden item? If not, go to the next signpost.
call .GetFarByte
cp SIGNPOST_ITEM
jr nz, .next
; Has this item already been found? If not, set off the Itemfinder.
ld a, [Buffer1]
call GetFarHalfword
ld a, [Buffer1]
call GetFarHalfword
ld d, h
ld e, l
ld b, CHECK_FLAG
call EventFlagAction
ld a, c
and a
jr z, .itemnearby
.next
; Restore the signpost header pointer and increment it by the length of a signpost header.
pop hl
ld bc, 5
add hl, bc
; Restore the signpost counter and decrement it. If it hits zero, there are no hidden items in range.
ld a, [Buffer2]
dec a
jr nz, .loop
.nosignpostitems
xor a
ret
.itemnearby
pop hl
scf
ret
; b81e2
.GetFarByte: ; b81e2
ld a, [Buffer1]
call GetFarByte
inc hl
ret
; b81ea
TreeMonEncounter: ; b81ea
callba TrainerRankings_TreeEncounters
xor a
ld [TempWildMonSpecies], a
ld [CurPartyLevel], a
ld hl, TreeMonMaps
call GetTreeMonSet
jr nc, .no_battle
call GetTreeMons
jr nc, .no_battle
call GetTreeMon
jr nc, .no_battle
ld a, BATTLETYPE_TREE
ld [BattleType], a
ld a, 1
ld [ScriptVar], a
ret
.no_battle
xor a
ld [ScriptVar], a
ret
; b8219
RockMonEncounter: ; b8219
xor a
ld [TempWildMonSpecies], a
ld [CurPartyLevel], a
ld hl, RockMonMaps
call GetTreeMonSet
jr nc, .no_battle
call GetTreeMons
jr nc, .no_battle
ld a, 10
call RandomRange
cp 4
jr nc, .no_battle
call SelectTreeMon
jr nc, .no_battle
ret
.no_battle
xor a
ret
; b823e
db $05 ; ????
GetTreeMonSet: ; b823f
; Return carry and treemon set in a
; if the current map is in table hl.
ld a, [MapNumber]
ld e, a
ld a, [MapGroup]
ld d, a
.loop
ld a, [hli]
cp -1
jr z, .not_in_table
cp d
jr nz, .skip2
ld a, [hli]
cp e
jr nz, .skip1
jr .in_table
.skip2
inc hl
.skip1
inc hl
jr .loop
.not_in_table
xor a
ret
.in_table
ld a, [hl]
scf
ret
; b825e
INCLUDE "data/wild/treemon_maps.asm"
GetTreeMons: ; b82d2
; Return the address of TreeMon table a in hl.
; Return nc if table a doesn't exist.
cp 8
jr nc, .quit
and a
jr z, .quit
ld e, a
ld d, 0
ld hl, TreeMons
add hl, de
add hl, de
ld a, [hli]
ld h, [hl]
ld l, a
scf
ret
.quit
xor a
ret
; b82e8
INCLUDE "data/wild/treemons.asm"
GetTreeMon: ; b83e5
push hl
call GetTreeScore
pop hl
and a
jr z, .bad
cp 1
jr z, .good
cp 2
jr z, .rare
ret
.bad
ld a, 10
call RandomRange
and a
jr nz, NoTreeMon
jr SelectTreeMon
.good
ld a, 10
call RandomRange
cp 5
jr nc, NoTreeMon
jr SelectTreeMon
.rare
ld a, 10
call RandomRange
cp 8
jr nc, NoTreeMon
jr .skip
.skip
ld a, [hli]
cp -1
jr nz, .skip
call SelectTreeMon
ret
; b841f
SelectTreeMon: ; b841f
; Read a TreeMons table and pick one monster at random.
ld a, 100
call RandomRange
.loop
sub [hl]
jr c, .ok
inc hl
inc hl
inc hl
jr .loop
.ok
ld a, [hli]
cp $ff
jr z, NoTreeMon
ld a, [hli]
ld [TempWildMonSpecies], a
ld a, [hl]
ld [CurPartyLevel], a
scf
ret
NoTreeMon: ; b843b
xor a
ld [TempWildMonSpecies], a
ld [CurPartyLevel], a
ret
; b8443
GetTreeScore: ; b8443
call .CoordScore
ld [Buffer1], a
call .OTIDScore
ld [Buffer2], a
ld c, a
ld a, [Buffer1]
sub c
jr z, .rare
jr nc, .ok
add 10
.ok
cp 5
jr c, .good
.bad
xor a
ret
.good
ld a, 1
ret
.rare
ld a, 2
ret
; b8466
.CoordScore: ; b8466
call GetFacingTileCoord
ld hl, 0
ld c, e
ld b, 0
ld a, d
and a
jr z, .next
.loop
add hl, bc
dec a
jr nz, .loop
.next
add hl, bc
ld c, d
add hl, bc
ld a, h
ld [hDividend], a
ld a, l
ld [hDividend + 1], a
ld a, 5
ld [hDivisor], a
ld b, 2
call Divide
ld a, [hQuotient + 1]
ld [hDividend], a
ld a, [hQuotient + 2]
ld [hDividend + 1], a
ld a, 10
ld [hDivisor], a
ld b, 2
call Divide
ld a, [hQuotient + 3]
ret
; b849d
.OTIDScore: ; b849d
ld a, [PlayerID]
ld [hDividend], a
ld a, [PlayerID + 1]
ld [hDividend + 1], a
ld a, 10
ld [hDivisor], a
ld b, 2
call Divide
ld a, [hQuotient + 3]
ret
; b84b3
LoadFishingGFX: ; b84b3
ld a, [rVBK]
push af
ld a, $1
ld [rVBK], a
ld de, FishingGFX
ld a, [PlayerGender]
bit 0, a
jr z, .got_gender
ld de, KrisFishingGFX
.got_gender
ld hl, VTiles0 tile $02
call .LoadGFX
ld hl, VTiles0 tile $06
call .LoadGFX
ld hl, VTiles0 tile $0a
call .LoadGFX
ld hl, VTiles1 tile $7c
call .LoadGFX
pop af
ld [rVBK], a
ret
; b84e3
.LoadGFX: ; b84e3
lb bc, BANK(FishingGFX), 2
push de
call Get2bpp
pop de
ld hl, 2 tiles
add hl, de
ld d, h
ld e, l
ret
; b84f2
FishingGFX: ; b84f2
INCBIN "gfx/overworld/chris_fish.2bpp"
; b8582
KrisFishingGFX: ; b8582
INCBIN "gfx/overworld/kris_fish.2bpp"
; b8612