ref: d35cfad0de085fab1b0c40c7f0497c9b745cb7b2
dir: /home/map.asm/
; Functions dealing with rendering and interacting with maps. Clearwc7e8:: ; 210f ld hl, wc7e8 ld bc, $0018 ld a, $0 call ByteFill ret ; 211b CheckTriggers:: ; 211b ; Checks wCurrentMapTriggerPointer. If it's empty, returns -1 in a. Otherwise, returns the active trigger ID in a. push hl ld hl, wCurrentMapTriggerPointer ld a, [hli] ld h, [hl] ld l, a or h ld a, [hl] jr nz, .triggerexists ld a, -1 .triggerexists pop hl ret ; 212a GetCurrentMapTrigger:: ; 212a ; Grabs the wram map trigger pointer for the current map and loads it into wCurrentMapTriggerPointer. ; If there are no triggers, both bytes of wCurrentMapTriggerPointer are wiped clean. ; Copy the current map group and number into bc. This is needed for GetMapTrigger. ld a, [MapGroup] ld b, a ld a, [MapNumber] ld c, a ; Blank out wCurrentMapTriggerPointer; this is the default scenario. xor a ld [wCurrentMapTriggerPointer], a ld [wCurrentMapTriggerPointer + 1], a call GetMapTrigger ret c ; The map is not in the trigger table ; Load the trigger table pointer from de into wCurrentMapTriggerPointer ld a, e ld [wCurrentMapTriggerPointer], a ld a, d ld [wCurrentMapTriggerPointer + 1], a xor a ret ; 2147 GetMapTrigger:: ; 2147 ; Searches the trigger table for the map group and number loaded in bc, and returns the wram pointer in de. ; If the map is not in the trigger table, returns carry. push bc ld a, [hROMBank] push af ld a, BANK(MapTriggers) rst Bankswitch ld hl, MapTriggers .loop push hl ld a, [hli] ; map group, or terminator cp -1 jr z, .end ; the current map is not in the trigger 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 ld de, 4 ; size of an entry in the trigger table 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 ; 2173 Function2173:: ; 2173 call Function217a call FarCallSwapTextboxPalettes ret ; 217a Function217a:: ; 217a ld a, [hROMBank] push af ld a, [TilesetBlocksBank] rst Bankswitch call Function2198 ld a, $60 hlcoord 0, 0 ld bc, TileMapEnd - TileMap call ByteFill ld a, BANK(Function4d15b) rst Bankswitch call Function4d15b pop af rst Bankswitch ret ; 2198 Function2198:: ; 2198 ld a, [wd194] ld e, a ld a, [wd195] ld d, a ld hl, wEnemyMoveStruct ld b, $5 .asm_21a5 push de push hl ld c, $6 .asm_21a9 push de push hl ld a, [de] and a jr nz, .asm_21b2 ld a, [MapBorderBlock] .asm_21b2 ld e, l ld d, h add a ld l, a ld h, 0 rept 3 add hl,hl endr ld a, [TilesetBlocksAddress] add l ld l, a ld a, [TilesetBlocksAddress + 1] adc h ld h, a rept 3 rept 4 ld a, [hli] ld [de], a inc de endr ld a, e add 20 ld e, a jr nc, .next\@ inc d .next\@ endr rept 4 ld a, [hli] ld [de], a inc de endr pop hl ld de, $0004 add hl, de pop de inc de dec c jp nz, .asm_21a9 pop hl ld de, $0060 add hl, de pop de ld a, [MapWidth] add $6 add e ld e, a jr nc, .asm_2225 inc d .asm_2225 dec b jp nz, .asm_21a5 ret ; 222a Function222a:: ; 222a ld a, $fa ld [hMapEntryMethod], a callba RunMapSetupScript xor a ld [hMapEntryMethod], a ret ; 2238 CheckWarpTile:: ; 2238 call Function2252 ret nc push bc callba Function149af pop bc ret nc call Function22a7 scf ret ; 224a Function224a:: ; 224a call Function2252 ret nc call Function22a7 ret ; 2252 Function2252:: ; 2252 callba Function1499a ret nc ld a, [hROMBank] push af call SwitchToMapScriptHeaderBank call Function2266 pop de ld a, d rst Bankswitch ret ; 2266 Function2266:: ; 2266 ld a, [PlayerMapY] sub $4 ld e, a ld a, [PlayerMapX] sub $4 ld d, a ld a, [wCurrMapWarpCount] and a ret z ld c, a ld hl, wCurrMapWarpHeaderPointer ld a, [hli] ld h, [hl] ld l, a .asm_227e push hl ld a, [hli] cp e jr nz, .asm_2289 ld a, [hli] cp d jr nz, .asm_2289 jr .asm_2296 .asm_2289 pop hl ld a, $5 add l ld l, a jr nc, .asm_2291 inc h .asm_2291 dec c jr nz, .asm_227e xor a ret .asm_2296 pop hl call Function22a3 ret nc ld a, [wCurrMapWarpCount] inc a sub c ld c, a scf ret ; 22a3 Function22a3:: ; 22a3 rept 2 inc hl endr scf ret ; 22a7 Function22a7:: ; 22a7 ld a, [hROMBank] push af call SwitchToMapScriptHeaderBank call Function22b4 pop af rst Bankswitch scf ret ; 22b4 Function22b4:: ; 22b4 push bc ld hl, wCurrMapWarpHeaderPointer ld a, [hli] ld h, [hl] ld l, a ld a, c dec a ld bc, $0005 call AddNTimes ld bc, $0002 add hl, bc ld a, [hli] cp $ff jr nz, .asm_22d0 ld hl, wdcac ld a, [hli] .asm_22d0 pop bc ld [wd146], a ld a, [hli] ld [wd147], a ld a, [hli] ld [wd148], a ld a, c ld [wd149], a ld a, [MapGroup] ld [wd14a], a ld a, [MapNumber] ld [wd14b], a scf ret ; 22ee CheckOutdoorMap:: ; 22ee cp ROUTE ret z cp TOWN ret ; 22f4 CheckIndoorMap:: ; 22f4 cp INDOOR ret z cp CAVE ret z cp DUNGEON ret z cp GATE ret ; 2300 Function2300:: ; 2300 cp INDOOR ret z cp GATE ret z cp $5 ret ; 2309 LoadMapAttributes:: ; 2309 call Function2326 call SwitchToMapScriptHeaderBank call Function234f xor a call ReadMapEventHeader ret ; 2317 LoadMapAttributes_IgnoreHidden:: ; 2317 call Function2326 call SwitchToMapScriptHeaderBank call Function234f ld a, $1 call ReadMapEventHeader ret ; 2326 Function2326:: ; 2326 call Function2c3d call SwitchToMapBank call GetSecondaryMapHeaderPointer call Function235c call Function2368 ret ; 2336 ReadMapEventHeader:: ; 2336 push af ld hl, MapEventHeaderPointer ld a, [hli] ld h, [hl] ld l, a rept 2 inc hl endr call ReadWarps call ReadCoordEvents call ReadSignposts pop af and a ret nz call ReadObjectEvents ret ; 234f Function234f:: ; 234f ld hl, MapScriptHeaderPointer ld a, [hli] ld h, [hl] ld l, a call ReadMapTriggers call ReadMapCallbacks ret ; 235c Function235c:: ; 235c ld de, MapHeader ld c, $c .asm_2361 ld a, [hli] ld [de], a inc de dec c jr nz, .asm_2361 ret ; 2368 Function2368:: ; 2368 ld a, $ff ld [NorthConnectedMapGroup], a ld [SouthConnectedMapGroup], a ld [WestConnectedMapGroup], a ld [EastConnectedMapGroup], a ld a, [MapConnections] ld b, a bit 3, b jr z, .asm_2384 ld de, NorthMapConnection call GetMapConnection .asm_2384 bit 2, b jr z, .asm_238e ld de, SouthMapConnection call GetMapConnection .asm_238e bit 1, b jr z, .asm_2398 ld de, WestMapConnection call GetMapConnection .asm_2398 bit 0, b jr z, .asm_23a2 ld de, EastMapConnection call GetMapConnection .asm_23a2 ret ; 23a3 GetMapConnection:: ; 23a3 ; Load map connection struct at hl into de. ld c, SouthMapConnection - NorthMapConnection .loop ld a, [hli] ld [de], a inc de dec c jr nz, .loop ret ; 23ac ReadMapTriggers:: ; 23ac ld a, [hli] ; trigger count ld c, a ld [wCurrMapTriggerCount], a ; current map trigger count ld a, l ld [wCurrMapTriggerHeaderPointer], a ; map trigger pointer ld a, h ld [wdc09], a ld a, c and a ret z ld bc, 4 ; size of a map trigger header entry call AddNTimes ret ; 23c3 ReadMapCallbacks:: ; 23c3 ld a, [hli] ld c, a ld [wCurrMapCallbackCount], a ld a, l ld [wCurrMapCallbackHeaderPointer], a ld a, h ld [wCurrMapCallbackHeaderPointer + 1], a ld a, c and a ret z ld bc, 3 call AddNTimes ret ; 23da ReadWarps:: ; 23da ld a, [hli] ld c, a ld [wCurrMapWarpCount], a ld a, l ld [wCurrMapWarpHeaderPointer], a ld a, h ld [wdbfd], a ld a, c and a ret z ld bc, $0005 call AddNTimes ret ; 23f1 ReadCoordEvents:: ; 23f1 ld a, [hli] ld c, a ld [wCurrentMapXYTriggerCount], a ld a, l ld [wCurrentMapXYTriggerHeaderPointer], a ld a, h ld [wdc00], a ld a, c and a ret z ld bc, $0008 call AddNTimes ret ; 2408 ReadSignposts:: ; 2408 ld a, [hli] ld c, a ld [wCurrentMapSignpostCount], a ld a, l ld [wdc02], a ld a, h ld [wdc03], a ld a, c and a ret z ld bc, $0005 call AddNTimes ret ; 241f ReadObjectEvents:: ; 241f push hl call Function2471 pop de ld hl, MapObjects + OBJECT_LENGTH ld a, [de] inc de ld [wdc04], a ld a, e ld [wdc05], a ld a, d ld [wdc06], a ld a, [wdc04] call Function2457 ld a, [wdc04] ld c, a ld a, $10 sub c jr z, .asm_2454 ld bc, $0001 add hl, bc ld bc, $0010 .asm_244a ld [hl], $0 inc hl ld [hl], $ff dec hl add hl, bc dec a jr nz, .asm_244a .asm_2454 ld h, d ld l, e ret ; 2457 Function2457:: ; 2457 and a ret z ld c, a .asm_245a push bc push hl ld a, $ff ld [hli], a ld b, $d .asm_2461 ld a, [de] inc de ld [hli], a dec b jr nz, .asm_2461 pop hl ld bc, $0010 add hl, bc pop bc dec c jr nz, .asm_245a ret ; 2471 Function2471:: ; 2471 ld hl, Object1Struct ld bc, OBJECT_STRUCT_LENGTH * (NUM_OBJECT_STRUCTS - 1) xor a call ByteFill ld hl, Object1Struct ld de, OBJECT_STRUCT_LENGTH ld c, NUM_OBJECT_STRUCTS - 1 xor a .asm_2484 ld [hl], a add hl, de dec c jr nz, .asm_2484 ret ; 248a RestoreFacingAfterWarp:: ; 248a call GetMapScriptHeaderBank rst Bankswitch ld hl, MapEventHeaderPointer ld a, [hli] ld h, [hl] ld l, a rept 3 inc hl endr ld a, [WarpNumber] dec a ld c, a ld b, $0 ld a, $5 call AddNTimes ld a, [hli] ld [YCoord], a ld a, [hli] ld [XCoord], a ld a, [hli] cp $ff jr nz, .asm_24b3 call Function24ba .asm_24b3 callba GetCoordOfUpperLeftCorner ret ; 24ba Function24ba:: ; 24ba ld a, [wd149] ld [wdcac], a ld a, [wd14a] ld [BackupMapGroup], a ld a, [wd14b] ld [BackupMapNumber], a ret ; 24cd LoadBlockData:: ; 24cd ld hl, OverworldMap ld bc, OverworldMapEnd - OverworldMap ld a, 0 call ByteFill call ChangeMap call FillMapConnections ld a, $1 call RunMapCallback ret ; 24e4 ChangeMap:: ; 24e4 ld a, [hROMBank] push af ld hl, OverworldMap ld a, [MapWidth] ld [hObjectStructIndexBuffer], a add $6 ld [hMapObjectIndexBuffer], a ld c, a ld b, 0 rept 3 add hl, bc endr ld c, 3 add hl, bc ld a, [MapBlockDataBank] rst Bankswitch ld a, [MapBlockDataPointer] ld e, a ld a, [MapBlockDataPointer+1] ld d, a ld a, [MapHeight] ld b, a .asm_250c push hl ld a, [hObjectStructIndexBuffer] ld c, a .asm_2510 ld a, [de] inc de ld [hli], a dec c jr nz, .asm_2510 pop hl ld a, [hMapObjectIndexBuffer] add l ld l, a jr nc, .asm_251e inc h .asm_251e dec b jr nz, .asm_250c pop af rst Bankswitch ret ; 2524 FillMapConnections:: ; 2524 ; North ld a, [NorthConnectedMapGroup] cp $ff jr z, .South ld b, a ld a, [NorthConnectedMapNumber] ld c, a call GetAnyMapBlockdataBank ld a, [NorthConnectionStripPointer] ld l, a ld a, [NorthConnectionStripPointer + 1] ld h, a ld a, [NorthConnectionStripLocation] ld e, a ld a, [NorthConnectionStripLocation + 1] ld d, a ld a, [NorthMapObjectIndexBuffer] ld [hMapObjectIndexBuffer], a ld a, [NorthObjectStructIndexBuffer] ld [hObjectStructIndexBuffer], a call FillNorthConnectionStrip .South ld a, [SouthConnectedMapGroup] cp $ff jr z, .West ld b, a ld a, [SouthConnectedMapNumber] ld c, a call GetAnyMapBlockdataBank ld a, [SouthConnectionStripPointer] ld l, a ld a, [SouthConnectionStripPointer + 1] ld h, a ld a, [SouthConnectionStripLocation] ld e, a ld a, [SouthConnectionStripLocation + 1] ld d, a ld a, [SouthMapObjectIndexBuffer] ld [hMapObjectIndexBuffer], a ld a, [SouthObjectStructIndexBuffer] ld [hObjectStructIndexBuffer], a call FillSouthConnectionStrip .West ld a, [WestConnectedMapGroup] cp $ff jr z, .East ld b, a ld a, [WestConnectedMapNumber] ld c, a call GetAnyMapBlockdataBank ld a, [WestConnectionStripPointer] ld l, a ld a, [WestConnectionStripPointer + 1] ld h, a ld a, [WestConnectionStripLocation] ld e, a ld a, [WestConnectionStripLocation + 1] ld d, a ld a, [WestConnectionStripLength] ld b, a ld a, [WestConnectedMapWidth] ld [hMapObjectIndexBuffer], a call FillWestConnectionStrip .East ld a, [EastConnectedMapGroup] cp $ff jr z, .Done ld b, a ld a, [EastConnectedMapNumber] ld c, a call GetAnyMapBlockdataBank ld a, [EastConnectionStripPointer] ld l, a ld a, [EastConnectionStripPointer + 1] ld h, a ld a, [EastConnectionStripLocation] ld e, a ld a, [EastConnectionStripLocation + 1] ld d, a ld a, [EastConnectionStripLength] ld b, a ld a, [EastConnectedMapWidth] ld [hMapObjectIndexBuffer], a call FillEastConnectionStrip .Done ret ; 25d3 FillNorthConnectionStrip:: FillSouthConnectionStrip:: ; 25d3 ld c, 3 .y push de push hl ld a, [hMapObjectIndexBuffer] ld b, a .x ld a, [hli] ld [de], a inc de dec b jr nz, .x pop hl ld a, [hObjectStructIndexBuffer] ld e, a ld d, 0 add hl, de pop de ld a, [MapWidth] add 6 add e ld e, a jr nc, .asm_25f2 inc d .asm_25f2 dec c jr nz, .y ret ; 25f6 FillWestConnectionStrip:: FillEastConnectionStrip:: ; 25f6 .asm_25f6 ld a, [MapWidth] add 6 ld [hObjectStructIndexBuffer], 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 ld a, [hMapObjectIndexBuffer] ld e, a ld d, 0 add hl, de pop de ld a, [hObjectStructIndexBuffer] add e ld e, a jr nc, .asm_2617 inc d .asm_2617 dec b jr nz, .asm_25f6 ret ; 261b LoadMapStatus:: ; 261b ld [MapStatus], a ret ; 261f CallScript:: ; 261f ; Call a script at a:hl. ld [ScriptBank], a ld a, l ld [ScriptPos], a ld a, h ld [ScriptPos + 1], a ld a, $ff ld [ScriptRunning], a scf ret ; 2631 Function2631:: ; 2631 ld a, [ScriptRunning] and a ret nz call GetMapScriptHeaderBank jr CallScript ; 263b RunMapCallback:: ; 263b ; Will run the first callback found in the map header with execution index equal to a. ld b, a ld a, [hROMBank] push af call SwitchToMapScriptHeaderBank call Function2653 jr nc, .done call GetMapScriptHeaderBank ld b, a ld d, h ld e, l call ExecuteCallbackScript .done pop af rst Bankswitch ret ; 2653 Function2653:: ; 2653 ld a, [wCurrMapCallbackCount] ld c, a and a ret z ld hl, wCurrMapCallbackHeaderPointer ld a, [hli] ld h, [hl] ld l, a or h ret z ld de, 3 .loop ld a, [hl] cp b jr z, .done add hl, de dec c jr nz, .loop xor a ret .done inc hl ld a, [hli] ld h, [hl] ld l, a scf ret ; 2674 ExecuteCallbackScript:: ; 2674 callba Function974f3 ld a, [ScriptMode] push af ld hl, ScriptFlags ld a, [hl] push af set 1, [hl] callba EnableScriptMode callba ScriptEvents pop af ld [ScriptFlags], a pop af ld [ScriptMode], a ret ; 269a MapTextbox:: ; 269a ld a, [hROMBank] push af ld a, b rst Bankswitch push hl call SpeechTextBox call Function2e31 ld a, 1 ld [hOAMUpdate], a call Function321c pop hl call PrintTextBoxText xor a ld [hOAMUpdate], a pop af rst Bankswitch ret ; 26b7 Call_a_de:: ; 26b7 ; Call a:de. ld [hBuffer], a ld a, [hROMBank] push af ld a, [hBuffer] rst Bankswitch call .de pop af rst Bankswitch ret .de push de ret ; 26c7 GetMovementData:: ; 26c7 ld a, [hROMBank] push af ld a, b rst Bankswitch ld a, c call Function19e9 pop hl ld a, h rst Bankswitch ret ; 26d4 GetScriptByte:: ; 0x26d4 ; Return byte at ScriptBank:ScriptPos in a. push hl push bc ld a, [hROMBank] push af ld a, [ScriptBank] rst Bankswitch ld hl, ScriptPos 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 ; 0x26ef ObjectEvent:: ; 0x26ef jumptextfaceplayer ObjectEventText ; 0x26f2 ObjectEventText:: text_jump _ObjectEventText db "@" ; 0x26f7 BGEvent:: ; 26f7 jumptext BGEventText ; 26fa BGEventText:: ; 26fa text_jump UnknownText_0x1c46fc db "@" ; 26ff CoordinatesEvent:: ; 26ff jumptext CoordinatesEventText ; 2702 CoordinatesEventText:: ; 2702 text_jump UnknownText_0x1c4706 db "@" ; 2707 CheckObjectMask:: ; 2707 ld a, [hMapObjectIndexBuffer] ld e, a ld d, $0 ld hl, wObjectMasks add hl, de ld a, [hl] ret ; 2712 MaskObject:: ; 2712 ld a, [hMapObjectIndexBuffer] ld e, a ld d, $0 ld hl, wObjectMasks add hl, de ld [hl], -1 ; ,masked ret ; 271e UnmaskObject:: ; 271e ld a, [hMapObjectIndexBuffer] ld e, a ld d, $0 ld hl, wObjectMasks add hl, de ld [hl], 0 ; unmasked ret ; 272a Function272a:: ; 272a hlcoord 0, 0 ld de, BGMapBuffer call Function27b7 ld c, $28 call FarCallScrollBGMapPalettes ld a, [wd152] ld e, a ld a, [wd153] ld d, a call Function27d3 ld a, $1 ld [hBGMapUpdate], a ret ; 2748 Function2748:: ; 2748 hlcoord 0, 16 ld de, BGMapBuffer call Function27b7 ld c, $28 call FarCallScrollBGMapPalettes ld a, [wd152] ld l, a ld a, [wd153] ld h, a ld bc, $0200 add hl, bc ld a, h and $3 or $98 ld e, l ld d, a call Function27d3 ld a, $1 ld [hBGMapUpdate], a ret ; 2771 Function2771:: ; 2771 hlcoord 0, 0 ld de, BGMapBuffer call Function27c0 ld c, $24 call FarCallScrollBGMapPalettes ld a, [wd152] ld e, a ld a, [wd153] ld d, a call Function27f8 ld a, $1 ld [hBGMapUpdate], a ret ; 278f Function278f:: ; 278f hlcoord 18, 0 ld de, BGMapBuffer call Function27c0 ld c, $24 call FarCallScrollBGMapPalettes ld a, [wd152] ld e, a and $e0 ld b, a ld a, e add $12 and $1f or b ld e, a ld a, [wd153] ld d, a call Function27f8 ld a, $1 ld [hBGMapUpdate], a ret ; 27b7 Function27b7:: ; 27b7 ld c, $28 .asm_27b9 ld a, [hli] ld [de], a inc de dec c jr nz, .asm_27b9 ret ; 27c0 Function27c0:: ; 27c0 ld c, $12 .asm_27c2 ld a, [hli] ld [de], a inc de ld a, [hl] ld [de], a inc de ld a, $13 add l ld l, a jr nc, .asm_27cf inc h .asm_27cf dec c jr nz, .asm_27c2 ret ; 27d3 Function27d3:: ; 27d3 ld hl, BGMapBufferPtrs push de call .asm_27df pop de ld a, $20 add e ld e, a .asm_27df ld c, $a .asm_27e1 ld a, e ld [hli], a ld a, d ld [hli], a ld a, e rept 2 inc a endr and $1f ld b, a ld a, e and $e0 or b ld e, a dec c jr nz, .asm_27e1 ld a, $14 ld [$ffdc], a ret ; 27f8 Function27f8:: ; 27f8 ld hl, BGMapBufferPtrs ld c, $12 .asm_27fd ld a, e ld [hli], a ld a, d ld [hli], a ld a, $20 add e ld e, a jr nc, .asm_280e inc d ld a, d and $3 or $98 ld d, a .asm_280e dec c jr nz, .asm_27fd ld a, $12 ld [$ffdc], a ret ; 2816 Function2816:: ; 2816 ld hl, BGMapBuffer ld bc, $0078 xor a call ByteFill ret ; 2821 Function2821:: ; 2821 ld hl, TilesetAddress ld a, [hli] ld h, [hl] ld l, a ld a, [TilesetBank] ld e, a ld a, [rSVBK] push af ld a, $6 ld [rSVBK], a ld a, e ld de, w6_d000 call FarDecompress ld hl, w6_d000 ld de, VTiles2 ld bc, $0600 call CopyBytes ld a, [rVBK] push af ld a, $1 ld [rVBK], a ld hl, w6_d600 ld de, VTiles2 ld bc, $0600 call CopyBytes pop af ld [rVBK], a pop af ld [rSVBK], a ld a, [wd199] cp $1 jr z, .asm_286f cp $2 jr z, .asm_286f cp $4 jr z, .asm_286f jr .asm_2875 .asm_286f callba LoadMapGroupRoof .asm_2875 xor a ld [hTileAnimFrame], a ret ; 2879 BufferScreen:: ; 2879 ld hl, wd194 ld a, [hli] ld h, [hl] ld l, a ld de, XCoord + 1 ld c, $5 ld b, $6 .asm_2886 push bc push hl .asm_2888 ld a, [hli] ld [de], a inc de dec b jr nz, .asm_2888 pop hl ld a, [MapWidth] add $6 ld c, a ld b, $0 add hl, bc pop bc dec c jr nz, .asm_2886 ret ; 289d SaveScreen:: ; 289d ld hl, wd194 ld a, [hli] ld h, [hl] ld l, a ld de, XCoord + 1 ld a, [MapWidth] add $6 ld [hMapObjectIndexBuffer], a ld a, [wd151] and a jr z, .asm_28cb cp $1 jr z, .asm_28c0 cp $2 jr z, .asm_28d4 cp $3 jr z, .asm_28da ret .asm_28c0 ld de, wdcbf ld a, [hMapObjectIndexBuffer] ld c, a ld b, $0 add hl, bc jr .asm_28ce .asm_28cb ld de, XCoord + 1 .asm_28ce ld b, $6 ld c, $4 jr Function28f7 .asm_28d4 ld de, XCoord + 2 inc hl jr .asm_28dd .asm_28da ld de, XCoord + 1 .asm_28dd ld b, $5 ld c, $5 jr Function28f7 LoadNeighboringBlockData:: ; 28e3 ld hl, wd194 ld a, [hli] ld h, [hl] ld l, a ld a, [MapWidth] add $6 ld [hMapObjectIndexBuffer], a ld de, XCoord + 1 ld b, $6 ld c, $5 Function28f7:: ; 28f7 .asm_28f7 push bc push hl push de .asm_28fa ld a, [de] inc de ld [hli], a dec b jr nz, .asm_28fa pop de ld a, e add $6 ld e, a jr nc, .asm_2908 inc d .asm_2908 pop hl ld a, [hMapObjectIndexBuffer] ld c, a ld b, $0 add hl, bc pop bc dec c jr nz, .asm_28f7 ret ; 2914 Function2914:: ; 2914 xor a ld [TilePermissions], a call Function296c call Function294d ld a, [PlayerMapX] ld d, a ld a, [PlayerMapY] ld e, a call Function2a3c ld [PlayerStandingTile], a call Function29ff ret nz ld a, [PlayerStandingTile] and 7 ld hl, .data_2945 add l ld l, a ld a, 0 adc h ld h, a ld a, [hl] ld hl, TilePermissions or [hl] ld [hl], a ret ; 2945 .data_2945 ; 2945 db 1, 2, 4, 8, 9, 10, 5, 6 ; 294d Function294d:: ; 294d ld a, [PlayerMapX] ld d, a ld a, [PlayerMapY] ld e, a push de inc e call Function2a3c ld [TileDown], a call Function298b pop de dec e call Function2a3c ld [TileUp], a call Function29a8 ret ; 296c Function296c:: ; 296c ld a, [PlayerMapX] ld d, a ld a, [PlayerMapY] ld e, a push de dec d call Function2a3c ld [TileLeft], a call Function29e2 pop de inc d call Function2a3c ld [TileRight], a call Function29c5 ret ; 298b Function298b:: ; 298b call Function29ff ret nz ld a, [TileDown] and $7 cp $2 jr z, .ok cp $6 jr z, .ok cp $7 ret nz .ok ld a, [TilePermissions] or $8 ld [TilePermissions], a ret ; 29a8 Function29a8:: ; 29a8 call Function29ff ret nz ld a, [TileUp] and $7 cp $3 jr z, .ok cp $4 jr z, .ok cp $5 ret nz .ok ld a, [TilePermissions] or $4 ld [TilePermissions], a ret ; 29c5 Function29c5:: ; 29c5 call Function29ff ret nz ld a, [TileRight] and $7 cp $1 jr z, .ok cp $5 jr z, .ok cp $7 ret nz .ok ld a, [TilePermissions] or $1 ld [TilePermissions], a ret ; 29e2 Function29e2:: ; 29e2 call Function29ff ret nz ld a, [TileLeft] and $7 cp $0 jr z, .ok cp $4 jr z, .ok cp $6 ret nz .ok ld a, [TilePermissions] or $2 ld [TilePermissions], a ret ; 29ff Function29ff:: ; 29ff and $f0 cp $b0 ret z cp $c0 ret ; 2a07 GetFacingTileCoord:: ; 2a07 ; Return map coordinates in (d, e) and tile id in a ; of the tile the player is facing. ld a, [PlayerDirection] and %1100 srl a srl a ld l, a ld h, 0 rept 2 add hl,hl endr 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 ld a, [PlayerMapX] add d ld d, a ld a, [PlayerMapY] add e ld e, a ld a, [hl] ret .Directions ; x, y db 0, 1 dw TileDown db 0, -1 dw TileUp db -1, 0 dw TileLeft db 1, 0 dw TileRight ; 2a3c Function2a3c:: ; 2a3c call GetBlockLocation ld a, [hl] and a jr z, .nope ld l, a ld h, $0 rept 2 add hl,hl endr ld a, [TilesetCollisionAddress] ld c, a ld a, [TilesetCollisionAddress + 1] ld b, a add hl, bc rr d jr nc, .nocarry inc hl .nocarry rr e jr nc, .nocarry2 rept 2 inc hl endr .nocarry2 ld a, [TilesetCollisionBank] call GetFarByte ret .nope ld a, -1 ret ; 2a66 GetBlockLocation:: ; 2a66 ld a, [MapWidth] add 6 ld c, a ld b, 0 ld hl, wc801 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 ; 2a8b CheckFacingSign:: ; 2a8b 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 signposts, we don't need to be here. ld a, [wCurrentMapSignpostCount] and a ret z ld c, a ld a, [hROMBank] push af call SwitchToMapScriptHeaderBank call CheckIfFacingTileCoordIsSign pop hl ld a, h rst Bankswitch ret ; 2aaa CheckIfFacingTileCoordIsSign:: ; 2aaa ; Checks to see if you are facing a signpost. If so, copies it into EngineBuffer1 and sets carry. ld hl, wdc02 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 ld a, 5 ; signpost event length add l ld l, a jr nc, .nocarry inc h .nocarry dec c jr nz, .loop xor a ret .copysign pop hl ld de, EngineBuffer1 ld bc, 5 ; signpost event length call CopyBytes scf ret ; 2ad4 CheckCurrentMapXYTriggers:: ; 2ad4 ; If there are no xy triggers, we don't need to be here. ld a, [wCurrentMapXYTriggerCount] and a ret z ; Copy the trigger count into c. ld c, a ld a, [hROMBank] push af call SwitchToMapScriptHeaderBank call CheckStandingOnXYTrigger pop hl ld a, h rst Bankswitch ret ; 2ae7 CheckStandingOnXYTrigger:: ; 2ae7 ; Checks to see if you are standing on an xy-trigger. If yes, copies the trigger to EngineBuffer1 and sets carry. ld hl, wCurrentMapXYTriggerHeaderPointer ld a, [hli] ld h, [hl] ld l, a ; Load the active trigger ID into b call CheckTriggers ld b, a ; Load your current coordinates into de. This will be used to check if your position is in the xy-trigger table for the current map. ld a, [PlayerMapX] sub 4 ld d, a ld a, [PlayerMapY] 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 .copytrigger .next pop hl ld a, $8 ; xy-trigger size add l ld l, a jr nc, .nocarry inc h .nocarry dec c jr nz, .loop xor a ret .copytrigger pop hl ld de, EngineBuffer1 ld bc, $0008 ; xy-trigger size call CopyBytes scf ret ; 2b29 FadeToMenu:: ; 2b29 xor a ld [hBGMapMode], a call LoadMenuDataHeader_0x1d75 callba FadeBlackBGMap call ClearSprites call DisableSpriteUpdates ret ; 2b3c Function2b3c:: ; 2b3c call WhiteBGMap call Function2bae call UpdateSprites call Call_ExitMenu call Functiond90 jr Function2b5c ; 2b4d Function2b4d:: ; 2b4d call WhiteBGMap call Call_ExitMenu call Function2bae call UpdateSprites call Functiond90 ; 2b5c Function2b5c:: ; 2b5c ld b, $9 call GetSGBLayout callba Function49409 call Function3200 callba FadeInBGMap call EnableSpriteUpdates ret ; 2b74 Function2b74:: ; 0x2b74 push af ld a, $1 ld [wc2ce], a call WhiteBGMap call ClearSprites call Function2bae hlcoord 0, 12 ld bc, $0412 call TextBox ld hl, VramState set 0, [hl] call UpdateSprites call Function3200 ld b, $9 call GetSGBLayout callba Function49409 call UpdateTimePals call DelayFrame ld a, $1 ld [$ffde], a pop af ret ; 0x2bae Function2bae:: ; 2bae call DisableLCD call ClearSprites callba Function14168 call Functione51 call Functione5f ld a, [hROMBank] push af ld a, [MapGroup] ld b, a ld a, [MapNumber] ld c, a call SwitchToAnyMapBank callba Function8c001 call Function2173 call Function2821 ld a, 9 call SkipMusic pop af rst Bankswitch call EnableLCD ret ; 2be5 GetMapHeaderPointer:: ; 2be5 ld a, [MapGroup] ld b, a ld a, [MapNumber] ld c, a ; 2bed GetAnyMapHeaderPointer:: ; 0x2bed ; Prior to calling this function, you must have switched banks so that ; MapGroupPointers is visible. ; inputs: ; b = map group, c = map number ; XXX de = ??? ; outputs: ; hl points to the map header push bc ; save map number for later ; get pointer to map group dec b ld c, b ld b, 0 ld hl, MapGroupPointers rept 2 add hl, bc endr ld a, [hli] ld h, [hl] ld l, a pop bc ; restore map number ; find the cth map header dec c ld b, 0 ld a, 9 call AddNTimes ret ; 0x2c04 GetMapHeaderMember:: ; 0x2c04 ; Extract data from the current map's header. ; inputs: ; de = offset of desired data within the mapheader ; outputs: ; bc = data from the current map's header ; (e.g., de = $0003 would return a pointer to the secondary map header) ld a, [MapGroup] ld b, a ld a, [MapNumber] ld c, a ; fallthrough GetAnyMapHeaderMember:: ; 0x2c0c ; bankswitch ld a, [hROMBank] push af ld a, BANK(MapGroupPointers) rst Bankswitch call GetAnyMapHeaderPointer add hl, de ld c, [hl] inc hl ld b, [hl] ; bankswitch back pop af rst Bankswitch ret ; 0x2c1c SwitchToMapBank:: ; 2c1c ld a, [MapGroup] ld b, a ld a, [MapNumber] ld c, a ; 2c24 SwitchToAnyMapBank:: ; 2c24 call GetAnyMapBank rst Bankswitch ret ; 2c29 GetMapBank:: ; 2c29 ld a, [MapGroup] ld b, a ld a, [MapNumber] ld c, a ; 2c31 GetAnyMapBank:: ; 2c31 push hl push de ld de, NONE call GetAnyMapHeaderMember ld a, c pop de pop hl ret ; 2c3d Function2c3d:: ; 2c3d ld a, [hROMBank] push af ld a, BANK(MapGroupPointers) rst Bankswitch call GetMapHeaderPointer ld de, wd197 + 1 ld bc, $0005 call CopyBytes pop af rst Bankswitch ret ; 2c52 SwitchToMapScriptHeaderBank:: ; 2c52 ld a, [MapScriptHeaderBank] rst Bankswitch ret ; 2c57 GetMapScriptHeaderBank:: ; 2c57 ld a, [MapScriptHeaderBank] ret ; 2c5b GetAnyMapBlockdataBank:: ; 2c5b ; Return the blockdata bank for group b map c. push hl push de push bc push bc ld de, 3 ; second map header pointer call GetAnyMapHeaderMember ld l, c ld h, b pop bc push hl ld de, 0 ; second map header bank call GetAnyMapHeaderMember pop hl ld de, 3 ; blockdata bank add hl, de ld a, c call GetFarByte rst Bankswitch pop bc pop de pop hl ret ; 2c7d GetSecondaryMapHeaderPointer:: ; 0x2c7d ; returns the current map's secondary map header pointer in hl. push bc push de ld de, $0003 ; secondary map header pointer (offset within header) call GetMapHeaderMember ld l, c ld h, b pop de pop bc ret ; 2c8a GetMapPermission:: ; 2c8a push hl push de push bc ld de, 2 call GetMapHeaderMember ld a, c pop bc pop de pop hl ret ; 2c98 Function2c98:: ; 2c98 ret ; 2c99 GetAnyMapPermission:: ; 2c99 push hl push de push bc ld de, $0002 call GetAnyMapHeaderMember ld a, c pop bc pop de pop hl ret ; 2ca7 GetAnyMapTileset:: ; 2ca7 ld de, $0001 call GetAnyMapHeaderMember ld a, c ret ; 2caf GetWorldMapLocation:: ; 0x2caf ; given a map group/id in bc, return its location on the Pokégear map. push hl push de push bc ld de, 5 call GetAnyMapHeaderMember ld a, c pop bc pop de pop hl ret ; 0x2cbd GetMapHeaderMusic:: ; 2cbd RADIO_TOWER_MUSIC EQU 7 push hl push bc ld de, 6 ; music call GetMapHeaderMember ld a, c cp MUSIC_MAHOGANY_MART jr z, .mahoganymart bit RADIO_TOWER_MUSIC, c jr nz, .radiotower callba Function8b342 ld e, c ld d, 0 .done pop bc pop hl ret .radiotower ld a, [StatusFlags2] bit 0, a jr z, .clearedradiotower ld de, MUSIC_ROCKET_OVERTURE jr .done .clearedradiotower ; the rest of the byte ld a, c and 1 << RADIO_TOWER_MUSIC - 1 ld e, a ld d, 0 jr .done .mahoganymart ld a, [StatusFlags2] bit 7, a jr z, .clearedmahogany ld de, MUSIC_ROCKET_HIDEOUT jr .done .clearedmahogany ld de, MUSIC_CHERRYGROVE_CITY jr .done ; 2cff GetMapHeaderTimeOfDayNybble:: ; 2cff call GetPhoneServiceTimeOfDayByte and $f ret ; 2d05 GetMapHeaderPhoneServiceNybble:: ; 2d05 call GetPhoneServiceTimeOfDayByte and $f0 swap a ret ; 2d0d GetPhoneServiceTimeOfDayByte:: ; 2d0d push hl push bc ld de, 7 ; phone service and time of day call GetMapHeaderMember ld a, c pop bc pop hl ret ; 2d19 Function2d19:: ; 2d19 push de push hl push bc ld de, 8 ; fishing group call GetMapHeaderMember ld a, c pop bc pop hl pop de ret ; 2d27 LoadTilesetHeader:: ; 2d27 push hl push bc ld hl, Tilesets ld bc, Tileset01 - Tileset00 ld a, [wd199] call AddNTimes ld de, TilesetBank ld bc, Tileset01 - Tileset00 ld a, BANK(Tilesets) call FarCopyBytes pop bc pop hl ret ; 2d43