ref: 7e9ccbb5b254f794a79c4d0f9d816b3cbfb81f3f
dir: /engine/items/town_map.asm/
DisplayTownMap: call LoadTownMap ld hl, wUpdateSpritesEnabled ld a, [hl] push af ld [hl], $ff push hl ld a, $1 ldh [hJoy7], a ld a, [wCurMap] push af ld b, $0 call DrawPlayerOrBirdSprite ; player sprite hlcoord 1, 0 ld de, wcd6d call PlaceString ld hl, wOAMBuffer ld de, wTileMapBackup ld bc, $10 call CopyData ld hl, vSprites tile $04 ld de, TownMapCursor lb bc, BANK(TownMapCursor), (TownMapCursorEnd - TownMapCursor) / $8 call CopyVideoDataDouble xor a ld [wWhichTownMapLocation], a pop af jr .enterLoop .townMapLoop hlcoord 0, 0 lb bc, 1, 20 call ClearScreenArea ld hl, TownMapOrder ld a, [wWhichTownMapLocation] ld c, a ld b, 0 add hl, bc ld a, [hl] .enterLoop ld de, wTownMapCoords call LoadTownMapEntry ld a, [de] push hl call TownMapCoordsToOAMCoords ld a, $4 ld [wOAMBaseTile], a ld hl, wOAMBuffer + $10 call WriteTownMapSpriteOAM ; town map cursor sprite pop hl ld de, wcd6d .copyMapName ld a, [hli] ld [de], a inc de cp $50 jr nz, .copyMapName hlcoord 1, 0 ld de, wcd6d call PlaceString ld hl, wOAMBuffer + $10 ld de, wTileMapBackup + 16 ld bc, $10 call CopyData .inputLoop call TownMapSpriteBlinkingAnimation call JoypadLowSensitivity ldh a, [hJoy5] ld b, a and A_BUTTON | B_BUTTON | D_UP | D_DOWN jr z, .inputLoop ld a, SFX_TINK call PlaySound bit 6, b jr nz, .pressedUp bit 7, b jr nz, .pressedDown xor a ld [wTownMapSpriteBlinkingEnabled], a ldh [hJoy7], a ld [wAnimCounter], a call ExitTownMap pop hl pop af ld [hl], a ret .pressedUp ld a, [wWhichTownMapLocation] inc a cp TownMapOrderEnd - TownMapOrder ; number of list items + 1 jr nz, .noOverflow xor a .noOverflow ld [wWhichTownMapLocation], a jp .townMapLoop .pressedDown ld a, [wWhichTownMapLocation] dec a cp -1 jr nz, .noUnderflow ld a, TownMapOrderEnd - TownMapOrder - 1 ; number of list items .noUnderflow ld [wWhichTownMapLocation], a jp .townMapLoop INCLUDE "data/maps/town_map_order.asm" TownMapCursor: INCBIN "gfx/town_map/town_map_cursor.1bpp" TownMapCursorEnd: LoadTownMap_Nest: call LoadTownMap ld hl, wUpdateSpritesEnabled ld a, [hl] push af ld [hl], $ff push hl call DisplayWildLocations call GetMonName hlcoord 1, 0 call PlaceString ld h, b ld l, c ld de, MonsNestText call PlaceString call WaitForTextScrollButtonPress call ExitTownMap pop hl pop af ld [hl], a ret MonsNestText: db "'s NEST@" LoadTownMap_Fly:: call ClearSprites call LoadTownMap call LoadPlayerSpriteGraphics call LoadFontTilePatterns ld de, BirdSprite ld hl, vSprites tile $04 lb bc, BANK(BirdSprite), 12 call CopyVideoData ld de, TownMapUpArrow ld hl, vChars1 tile $6d lb bc, BANK(TownMapUpArrow), (TownMapUpArrowEnd - TownMapUpArrow) / $8 call CopyVideoDataDouble call BuildFlyLocationsList ld hl, wUpdateSpritesEnabled ld a, [hl] push af ld [hl], $ff push hl hlcoord 0, 0 ld de, ToText call PlaceString ld a, [wCurMap] ld b, $0 call DrawPlayerOrBirdSprite ld hl, wFlyLocationsList decoord 18, 0 .townMapFlyLoop ld a, " " ld [de], a push hl push hl hlcoord 3, 0 lb bc, 1, 15 call ClearScreenArea pop hl ld a, [hl] ld b, $4 call DrawPlayerOrBirdSprite ; draw bird sprite hlcoord 3, 0 ld de, wcd6d call PlaceString ld c, 15 call DelayFrames hlcoord 18, 0 ld [hl], "▲" hlcoord 19, 0 ld [hl], "▼" pop hl .inputLoop push hl call DelayFrame call JoypadLowSensitivity ldh a, [hJoy5] ld b, a pop hl and A_BUTTON | B_BUTTON | D_UP | D_DOWN jr z, .inputLoop bit 0, b jr nz, .pressedA ld a, SFX_TINK call PlaySound bit 6, b jr nz, .pressedUp bit 7, b jr nz, .pressedDown jr .pressedB .pressedA ld a, SFX_HEAL_AILMENT call PlaySound ld a, [hl] ld [wDestinationMap], a ld hl, wd732 set 3, [hl] inc hl set 7, [hl] .pressedB xor a ld [wTownMapSpriteBlinkingEnabled], a call GBPalWhiteOutWithDelay3 pop hl pop af ld [hl], a ret .pressedUp decoord 18, 0 inc hl ld a, [hl] cp $ff jr z, .wrapToStartOfList cp $fe jr z, .pressedUp ; skip past unvisited towns jp .townMapFlyLoop .wrapToStartOfList ld hl, wFlyLocationsList jp .townMapFlyLoop .pressedDown decoord 19, 0 dec hl ld a, [hl] cp $ff jr z, .wrapToEndOfList cp $fe jr z, .pressedDown ; skip past unvisited towns jp .townMapFlyLoop .wrapToEndOfList ld hl, wFlyLocationsList + 11 jr .pressedDown ToText: db "To@" BuildFlyLocationsList: ld hl, wFlyLocationsList - 1 ld [hl], $ff inc hl ld a, [wTownVisitedFlag] ld e, a ld a, [wTownVisitedFlag + 1] ld d, a ld bc, SAFFRON_CITY + 1 .loop srl d rr e ld a, $fe ; store $fe if the town hasn't been visited jr nc, .notVisited ld a, b ; store the map number of the town if it has been visited .notVisited ld [hl], a inc hl inc b dec c jr nz, .loop ld [hl], $ff ret TownMapUpArrow: INCBIN "gfx/town_map/up_arrow.1bpp" TownMapUpArrowEnd: LoadTownMap: call GBPalWhiteOutWithDelay3 call ClearScreen call UpdateSprites hlcoord 0, 0 ld b, $12 ld c, $12 call TextBoxBorder call DisableLCD ld hl, WorldMapTileGraphics ld de, vChars2 tile $60 ld bc, WorldMapTileGraphicsEnd - WorldMapTileGraphics ld a, BANK(WorldMapTileGraphics) call FarCopyData2 ld hl, MonNestIcon ld de, vSprites tile $04 ld bc, MonNestIconEnd - MonNestIcon ld a, BANK(MonNestIcon) call FarCopyDataDouble hlcoord 0, 0 ld de, CompressedMap .nextTile ld a, [de] and a jr z, .done ld b, a and $f ld c, a ld a, b swap a and $f add $60 .writeRunLoop ld [hli], a dec c jr nz, .writeRunLoop inc de jr .nextTile .done call EnableLCD ld b, SET_PAL_TOWN_MAP call RunPaletteCommand call Delay3 call GBPalNormal xor a ld [wAnimCounter], a inc a ld [wTownMapSpriteBlinkingEnabled], a ret CompressedMap: INCBIN "gfx/town_map/town_map.rle" ExitTownMap: ; clear town map graphics data and load usual graphics data xor a ld [wTownMapSpriteBlinkingEnabled], a call GBPalWhiteOut call ClearScreen call ClearSprites call LoadPlayerSpriteGraphics call LoadFontTilePatterns call UpdateSprites jp RunDefaultPaletteCommand DrawPlayerOrBirdSprite: ; a = map number ; b = OAM base tile push af ld a, b ld [wOAMBaseTile], a pop af ld de, wTownMapCoords call LoadTownMapEntry ld a, [de] push hl call TownMapCoordsToOAMCoords call WritePlayerOrBirdSpriteOAM pop hl ld de, wcd6d .loop ld a, [hli] ld [de], a inc de cp "@" jr nz, .loop ld hl, wOAMBuffer ld de, wTileMapBackup ld bc, $a0 jp CopyData DisplayWildLocations: farcall FindWildLocationsOfMon call ZeroOutDuplicatesInList ld hl, wOAMBuffer ld de, wTownMapCoords .loop ld a, [de] cp $ff jr z, .exitLoop and a jr z, .nextEntry push hl call LoadTownMapEntry pop hl ld a, [de] cp $19 ; Cerulean Cave's coordinates jr z, .nextEntry ; skip Cerulean Cave call TownMapCoordsToOAMCoords ld a, $4 ; nest icon tile no. ld [hli], a xor a ld [hli], a .nextEntry inc de jr .loop .exitLoop ld a, l and a ; were any OAM entries written? jr nz, .drawPlayerSprite ; if no OAM entries were written, print area unknown text hlcoord 1, 7 ld b, 2 ld c, 15 call TextBoxBorder hlcoord 2, 9 ld de, AreaUnknownText call PlaceString jr .done .drawPlayerSprite ld a, [wCurMap] ld b, $0 call DrawPlayerOrBirdSprite .done ld hl, wOAMBuffer ld de, wTileMapBackup ld bc, $a0 jp CopyData AreaUnknownText: db " AREA UNKNOWN@" TownMapCoordsToOAMCoords: ; in: lower nybble of a = x, upper nybble of a = y ; out: b and [hl] = (y * 8) + 24, c and [hl+1] = (x * 8) + 24 push af and $f0 srl a add 24 ld b, a ld [hli], a pop af and $f swap a srl a add 24 ld c, a ld [hli], a ret WritePlayerOrBirdSpriteOAM: ld a, [wOAMBaseTile] and a ld hl, wOAMBuffer + $90 ; for player sprite jr z, WriteTownMapSpriteOAM ld hl, wOAMBuffer + $80 ; for bird sprite WriteTownMapSpriteOAM: push hl ; Subtract 4 from c (X coord) and 4 from b (Y coord). However, the carry from c ; is added to b, so the net result is that only 3 is subtracted from b. lb hl, -4, -4 add hl, bc ld b, h ld c, l pop hl WriteAsymmetricMonPartySpriteOAM: ; Writes 4 OAM blocks for a helix mon party sprite, since it does not have ; a vertical line of symmetry. lb de, 2, 2 .loop push de push bc .innerLoop ld a, b ld [hli], a ld a, c ld [hli], a ld a, [wOAMBaseTile] ld [hli], a inc a ld [wOAMBaseTile], a xor a ld [hli], a inc d ld a, 8 add c ld c, a dec e jr nz, .innerLoop pop bc pop de ld a, 8 add b ld b, a dec d jr nz, .loop ret WriteSymmetricMonPartySpriteOAM: ; Writes 4 OAM blocks for a mon party sprite other than a helix. All the ; sprites other than the helix one have a vertical line of symmetry which allows ; the X-flip OAM bit to be used so that only 2 rather than 4 tile patterns are ; needed. xor a ld [wSymmetricSpriteOAMAttributes], a lb de, 2, 2 .loop push de push bc .innerLoop ld a, b ld [hli], a ; Y ld a, c ld [hli], a ; X ld a, [wOAMBaseTile] ld [hli], a ; tile ld a, [wSymmetricSpriteOAMAttributes] ld [hli], a ; attributes xor (1 << OAM_X_FLIP) ld [wSymmetricSpriteOAMAttributes], a inc d ld a, 8 add c ld c, a dec e jr nz, .innerLoop pop bc pop de push hl ld hl, wOAMBaseTile inc [hl] inc [hl] pop hl ld a, 8 add b ld b, a dec d jr nz, .loop ret ZeroOutDuplicatesInList: ; replace duplicate bytes in the list of wild pokemon locations with 0 ld de, wBuffer .loop ld a, [de] inc de cp $ff ret z ld c, a ld l, e ld h, d .zeroDuplicatesLoop ld a, [hl] cp $ff jr z, .loop cp c jr nz, .skipZeroing xor a ld [hl], a .skipZeroing inc hl jr .zeroDuplicatesLoop LoadTownMapEntry: ; in: a = map number ; out: lower nybble of [de] = x, upper nybble of [de] = y, hl = address of name cp REDS_HOUSE_1F jr c, .external ld bc, 4 ld hl, InternalMapEntries .loop cp [hl] jr c, .foundEntry add hl, bc jr .loop .foundEntry inc hl jr .readEntry .external ld hl, ExternalMapEntries ld c, a ld b, 0 add hl, bc add hl, bc add hl, bc .readEntry ld a, [hli] ld [de], a ld a, [hli] ld h, [hl] ld l, a ret INCLUDE "data/maps/town_map_entries.asm" INCLUDE "data/maps/names.asm" MonNestIcon: INCBIN "gfx/town_map/mon_nest_icon.1bpp" MonNestIconEnd: TownMapSpriteBlinkingAnimation:: ld a, [wAnimCounter] inc a cp 25 jr z, .hideSprites cp 50 jr nz, .done ; show sprites when the counter reaches 50 ld hl, wTileMapBackup ld de, wOAMBuffer ld bc, $90 call CopyData xor a jr .done .hideSprites ld hl, wOAMBuffer ld b, $24 ld de, $4 .hideSpritesLoop ld [hl], $a0 add hl, de dec b jr nz, .hideSpritesLoop ld a, 25 .done ld [wAnimCounter], a jp DelayFrame