ref: 73c020074e667d06a61655bbe06dc9b3e3744e03
dir: /engine/overworld/events.asm/
INCLUDE "constants.asm" SECTION "Events", ROMX OverworldLoop:: xor a ; MAPSTATUS_START ld [wMapStatus], a .loop ld a, [wMapStatus] ld hl, .Jumptable rst JumpTable ld a, [wMapStatus] cp MAPSTATUS_DONE jr nz, .loop .done ret .Jumptable: ; entries correspond to MAPSTATUS_* constants dw StartMap dw EnterMap dw HandleMap dw .done DisableEvents: xor a ld [wScriptFlags2], a ret EnableEvents:: ld a, $ff ld [wScriptFlags2], a ret CheckBit5_ScriptFlags2: ld hl, wScriptFlags2 bit 5, [hl] ret DisableWarpsConnxns: ; unreferenced ld hl, wScriptFlags2 res 2, [hl] ret DisableCoordEvents: ; unreferenced ld hl, wScriptFlags2 res 1, [hl] ret DisableStepCount: ; unreferenced ld hl, wScriptFlags2 res 0, [hl] ret DisableWildEncounters: ; unreferenced ld hl, wScriptFlags2 res 4, [hl] ret EnableWarpsConnxns: ; unreferenced ld hl, wScriptFlags2 set 2, [hl] ret EnableCoordEvents: ; unreferenced ld hl, wScriptFlags2 set 1, [hl] ret EnableStepCount: ; unreferenced ld hl, wScriptFlags2 set 0, [hl] ret EnableWildEncounters: ld hl, wScriptFlags2 set 4, [hl] ret CheckWarpConnxnScriptFlag: ld hl, wScriptFlags2 bit 2, [hl] ret CheckCoordEventScriptFlag: ld hl, wScriptFlags2 bit 1, [hl] ret CheckStepCountScriptFlag: ld hl, wScriptFlags2 bit 0, [hl] ret CheckWildEncountersScriptFlag: ld hl, wScriptFlags2 bit 4, [hl] ret StartMap: xor a ld [wScriptVar], a xor a ld [wScriptRunning], a ld hl, wMapStatus ld bc, wMapStatusEnd - wMapStatus call ByteFill farcall InitCallReceiveDelay call ClearJoypad EnterMap: xor a ld [wXYComparePointer], a ld [wXYComparePointer + 1], a call SetUpFiveStepWildEncounterCooldown farcall RunMapSetupScript call DisableEvents ldh a, [hMapEntryMethod] cp MAPSETUP_CONNECTION jr nz, .dont_enable call EnableEvents .dont_enable ldh a, [hMapEntryMethod] cp MAPSETUP_RELOADMAP jr nz, .dontresetpoison xor a ld [wPoisonStepCount], a .dontresetpoison xor a ; end map entry ldh [hMapEntryMethod], a ld a, MAPSTATUS_HANDLE ld [wMapStatus], a ret UnusedWait30Frames: ; unreferenced ld c, 30 call DelayFrames ret HandleMap: call ResetOverworldDelay call HandleMapTimeAndJoypad farcall HandleCmdQueue ; no need to farcall call MapEvents ; Not immediately entering a connected map will cause problems. ld a, [wMapStatus] cp MAPSTATUS_HANDLE ret nz call HandleMapObjects call NextOverworldFrame call HandleMapBackground call CheckPlayerState ret MapEvents: ld a, [wMapEventStatus] ld hl, .Jumptable rst JumpTable ret .Jumptable: ; entries correspond to MAPEVENTS_* constants dw .events dw .no_events .events: call PlayerEvents call DisableEvents farcall ScriptEvents ret .no_events: ret MaxOverworldDelay: db 2 ResetOverworldDelay: ld a, [MaxOverworldDelay] ld [wOverworldDelay], a ret NextOverworldFrame: ld a, [wOverworldDelay] and a ret z ld c, a call DelayFrames ret HandleMapTimeAndJoypad: ld a, [wMapEventStatus] cp MAPEVENTS_OFF ret z call UpdateTime call GetJoypad call TimeOfDayPals ret HandleMapObjects: farcall HandleNPCStep farcall _HandlePlayerStep call _CheckObjectEnteringVisibleRange ret HandleMapBackground: farcall _UpdateSprites farcall ScrollScreen farcall PlaceMapNameSign ret CheckPlayerState: ld a, [wPlayerStepFlags] bit PLAYERSTEP_CONTINUE_F, a jr z, .events bit PLAYERSTEP_STOP_F, a jr z, .noevents bit PLAYERSTEP_MIDAIR_F, a jr nz, .noevents call EnableEvents .events ld a, MAPEVENTS_ON ld [wMapEventStatus], a ret .noevents ld a, MAPEVENTS_OFF ld [wMapEventStatus], a ret _CheckObjectEnteringVisibleRange: ld hl, wPlayerStepFlags bit PLAYERSTEP_STOP_F, [hl] ret z farcall CheckObjectEnteringVisibleRange ret PlayerEvents: xor a ; If there's already a player event, don't interrupt it. ld a, [wScriptRunning] and a ret nz call Dummy_CheckScriptFlags2Bit5 ; This is a waste of time call CheckTrainerBattle_GetPlayerEvent jr c, .ok call CheckTileEvent jr c, .ok call RunMemScript jr c, .ok call RunSceneScript jr c, .ok call CheckTimeEvents jr c, .ok call OWPlayerInput jr c, .ok xor a ret .ok push af farcall EnableScriptMode pop af ld [wScriptRunning], a call DoPlayerEvent ld a, [wScriptRunning] cp PLAYEREVENT_CONNECTION jr z, .ok2 cp PLAYEREVENT_JOYCHANGEFACING jr z, .ok2 xor a ld [wLandmarkSignTimer], a .ok2 scf ret CheckTrainerBattle_GetPlayerEvent: nop nop call CheckTrainerBattle jr nc, .nope ld a, PLAYEREVENT_SEENBYTRAINER scf ret .nope xor a ret CheckTileEvent: ; Check for warps, coord events, or wild battles. call CheckWarpConnxnScriptFlag jr z, .connections_disabled farcall CheckMovingOffEdgeOfMap jr c, .map_connection call CheckWarpTile jr c, .warp_tile .connections_disabled call CheckCoordEventScriptFlag jr z, .coord_events_disabled call CheckCurrentMapCoordEvents jr c, .coord_event .coord_events_disabled call CheckStepCountScriptFlag jr z, .step_count_disabled call CountStep ret c .step_count_disabled call CheckWildEncountersScriptFlag jr z, .ok call RandomEncounter ret c jr .ok ; pointless .ok xor a ret .map_connection ld a, PLAYEREVENT_CONNECTION scf ret .warp_tile ld a, [wPlayerStandingTile] call CheckPitTile jr nz, .not_pit ld a, PLAYEREVENT_FALL scf ret .not_pit ld a, PLAYEREVENT_WARP scf ret .coord_event ld hl, wCurCoordEventScriptAddr ld a, [hli] ld h, [hl] ld l, a call GetMapScriptsBank call CallScript ret CheckWildEncounterCooldown:: ld hl, wWildEncounterCooldown ld a, [hl] and a ret z dec [hl] ret z scf ret SetUpFiveStepWildEncounterCooldown: ld a, 5 ld [wWildEncounterCooldown], a ret SetMinTwoStepWildEncounterCooldown: ; dummied out ret ld a, [wWildEncounterCooldown] cp 2 ret nc ld a, 2 ld [wWildEncounterCooldown], a ret Dummy_CheckScriptFlags2Bit5: call CheckBit5_ScriptFlags2 ret z call SetXYCompareFlags ret RunSceneScript: ld a, [wCurMapSceneScriptCount] and a jr z, .nope ld c, a call CheckScenes cp c jr nc, .nope ld e, a ld d, 0 ld hl, wCurMapSceneScriptsPointer ld a, [hli] ld h, [hl] ld l, a rept SCENE_SCRIPT_SIZE add hl, de endr call GetMapScriptsBank call GetFarWord call GetMapScriptsBank call CallScript ld hl, wScriptFlags res 3, [hl] farcall EnableScriptMode farcall ScriptEvents ld hl, wScriptFlags bit 3, [hl] jr z, .nope ld hl, wDeferredScriptAddr ld a, [hli] ld h, [hl] ld l, a ld a, [wDeferredScriptBank] call CallScript scf ret .nope xor a ret CheckTimeEvents: ld a, [wLinkMode] and a jr nz, .nothing ld hl, wStatusFlags2 bit STATUSFLAGS2_BUG_CONTEST_TIMER_F, [hl] jr z, .do_daily farcall CheckBugContestTimer jr c, .end_bug_contest xor a ret .do_daily farcall CheckDailyResetTimer farcall CheckPokerusTick farcall CheckPhoneCall ret c .nothing xor a ret .end_bug_contest ld a, BANK(BugCatchingContestOverScript) ld hl, BugCatchingContestOverScript call CallScript scf ret .unused ; unreferenced ld a, $8 ; ??? scf ret OWPlayerInput: call PlayerMovement ret c and a jr nz, .NoAction ; Can't perform button actions while sliding on ice. farcall CheckStandingOnIce jr c, .NoAction call CheckAPressOW jr c, .Action call CheckMenuOW jr c, .Action .NoAction: xor a ret .Action: push af farcall StopPlayerForEvent pop af scf ret CheckAPressOW: ldh a, [hJoyPressed] and A_BUTTON ret z call TryObjectEvent ret c call TryBGEvent ret c call TryTileCollisionEvent ret c xor a ret PlayTalkObject: push de ld de, SFX_READ_TEXT_2 call PlaySFX pop de ret TryObjectEvent: farcall CheckFacingObject jr c, .IsObject xor a ret .IsObject: call PlayTalkObject ldh a, [hObjectStructIndex] call GetObjectStruct ld hl, OBJECT_MAP_OBJECT_INDEX add hl, bc ld a, [hl] ldh [hLastTalked], a ldh a, [hLastTalked] call GetMapObject ld hl, MAPOBJECT_COLOR add hl, bc ld a, [hl] and %00001111 ; Bug: If IsInArray returns nc, data at bc will be executed as code. push bc ld de, 3 ld hl, ObjectEventTypeArray call IsInArray jr nc, .nope pop bc inc hl ld a, [hli] ld h, [hl] ld l, a jp hl .nope ; pop bc xor a ret ObjectEventTypeArray: table_width 3, ObjectEventTypeArray dbw OBJECTTYPE_SCRIPT, .script dbw OBJECTTYPE_ITEMBALL, .itemball dbw OBJECTTYPE_TRAINER, .trainer ; the remaining four are dummy events dbw OBJECTTYPE_3, .three dbw OBJECTTYPE_4, .four dbw OBJECTTYPE_5, .five dbw OBJECTTYPE_6, .six assert_table_length NUM_OBJECT_TYPES db -1 ; end .script ld hl, MAPOBJECT_SCRIPT_POINTER add hl, bc ld a, [hli] ld h, [hl] ld l, a call GetMapScriptsBank call CallScript ret .itemball ld hl, MAPOBJECT_SCRIPT_POINTER add hl, bc ld a, [hli] ld h, [hl] ld l, a call GetMapScriptsBank ld de, wItemBallData ld bc, wItemBallDataEnd - wItemBallData call FarCopyBytes ld a, PLAYEREVENT_ITEMBALL scf ret .trainer call TalkToTrainer ld a, PLAYEREVENT_TALKTOTRAINER scf ret .three xor a ret .four xor a ret .five xor a ret .six xor a ret TryBGEvent: call CheckFacingBGEvent jr c, .is_bg_event xor a ret .is_bg_event: ld a, [wCurBGEventType] ld hl, BGEventJumptable rst JumpTable ret BGEventJumptable: table_width 2, BGEventJumptable dw .read dw .up dw .down dw .right dw .left dw .ifset dw .ifnotset dw .itemifset dw .copy assert_table_length NUM_BGEVENTS .up: ld b, OW_UP jr .checkdir .down: ld b, OW_DOWN jr .checkdir .right: ld b, OW_RIGHT jr .checkdir .left: ld b, OW_LEFT jr .checkdir .checkdir: ld a, [wPlayerDirection] and %1100 cp b jp nz, .dontread .read: call PlayTalkObject ld hl, wCurBGEventScriptAddr ld a, [hli] ld h, [hl] ld l, a call GetMapScriptsBank call CallScript scf ret .itemifset: call CheckBGEventFlag jp nz, .dontread call PlayTalkObject call GetMapScriptsBank ld de, wHiddenItemData ld bc, wHiddenItemDataEnd - wHiddenItemData call FarCopyBytes ld a, BANK(HiddenItemScript) ld hl, HiddenItemScript call CallScript scf ret .copy: call CheckBGEventFlag jr nz, .dontread call GetMapScriptsBank ld de, wHiddenItemData ld bc, wHiddenItemDataEnd - wHiddenItemData call FarCopyBytes jr .dontread .ifset: call CheckBGEventFlag jr z, .dontread jr .thenread .ifnotset: call CheckBGEventFlag jr nz, .dontread .thenread: push hl call PlayTalkObject pop hl inc hl inc hl call GetMapScriptsBank call GetFarWord call GetMapScriptsBank call CallScript scf ret .dontread: xor a ret CheckBGEventFlag: ld hl, wCurBGEventScriptAddr ld a, [hli] ld h, [hl] ld l, a push hl call GetMapScriptsBank call GetFarWord ld e, l ld d, h ld b, CHECK_FLAG call EventFlagAction ld a, c and a pop hl ret PlayerMovement: farcall DoPlayerMovement ld a, c ld hl, PlayerMovementPointers rst JumpTable ld a, c ret PlayerMovementPointers: ; entries correspond to PLAYERMOVEMENT_* constants table_width 2, PlayerMovementPointers dw .normal dw .warp dw .turn dw .force_turn dw .finish dw .continue dw .exit_water dw .jump assert_table_length NUM_PLAYER_MOVEMENTS .normal: .finish: xor a ld c, a ret .jump: call SetMinTwoStepWildEncounterCooldown xor a ld c, a ret .warp: ld a, PLAYEREVENT_WARP ld c, a scf ret .turn: ld a, PLAYEREVENT_JOYCHANGEFACING ld c, a scf ret .force_turn: ; force the player to move in some direction ld a, BANK(Script_ForcedMovement) ld hl, Script_ForcedMovement call CallScript ld c, a scf ret .continue: .exit_water: ld a, -1 ld c, a and a ret CheckMenuOW: xor a ldh [hMenuReturn], a ldh [hUnusedByte], a ldh a, [hJoyPressed] bit SELECT_F, a jr nz, .Select bit START_F, a jr z, .NoMenu ld a, BANK(StartMenuScript) ld hl, StartMenuScript call CallScript scf ret .NoMenu: xor a ret .Select: call PlayTalkObject ld a, BANK(SelectMenuScript) ld hl, SelectMenuScript call CallScript scf ret StartMenuScript: callasm StartMenu sjump StartMenuCallback SelectMenuScript: callasm SelectMenu sjump SelectMenuCallback StartMenuCallback: SelectMenuCallback: readmem hMenuReturn ifequal HMENURETURN_SCRIPT, .Script ifequal HMENURETURN_ASM, .Asm end .Script: memjump wQueuedScriptBank .Asm: memcallasm wQueuedScriptBank end CountStep: ; Don't count steps in link communication rooms. ld a, [wLinkMode] and a jr nz, .done ; If there is a special phone call, don't count the step. farcall CheckSpecialPhoneCall jr c, .doscript ; If Repel wore off, don't count the step. call DoRepelStep jr c, .doscript ; Count the step for poison and total steps ld hl, wPoisonStepCount inc [hl] ld hl, wStepCount inc [hl] ; Every 256 steps, increase the happiness of all your Pokemon. jr nz, .skip_happiness farcall StepHappiness .skip_happiness ; Every 256 steps, offset from the happiness incrementor by 128 steps, ; decrease the hatch counter of all your eggs until you reach the first ; one that is ready to hatch. ld a, [wStepCount] cp $80 jr nz, .skip_egg farcall DoEggStep jr nz, .hatch .skip_egg ; Increase the EXP of (both) DayCare Pokemon by 1. farcall DayCareStep ; Every 4 steps, deal damage to all poisoned Pokemon. ld hl, wPoisonStepCount ld a, [hl] cp 4 jr c, .skip_poison ld [hl], 0 farcall DoPoisonStep jr c, .doscript .skip_poison farcall DoBikeStep .done xor a ret .doscript ld a, -1 scf ret .hatch ld a, PLAYEREVENT_HATCH scf ret .whiteout ; unreferenced ld a, PLAYEREVENT_WHITEOUT scf ret DoRepelStep: ld a, [wRepelEffect] and a ret z dec a ld [wRepelEffect], a ret nz ld a, BANK(RepelWoreOffScript) ld hl, RepelWoreOffScript call CallScript scf ret DoPlayerEvent: ld a, [wScriptRunning] and a ret z cp PLAYEREVENT_MAPSCRIPT ; run script ret z cp NUM_PLAYER_EVENTS ret nc ld c, a ld b, 0 ld hl, PlayerEventScriptPointers add hl, bc add hl, bc add hl, bc ld a, [hli] ld [wScriptBank], a ld a, [hli] ld [wScriptPos], a ld a, [hl] ld [wScriptPos + 1], a ret PlayerEventScriptPointers: ; entries correspond to PLAYEREVENT_* constants table_width 3, PlayerEventScriptPointers dba InvalidEventScript ; PLAYEREVENT_NONE dba SeenByTrainerScript ; PLAYEREVENT_SEENBYTRAINER dba TalkToTrainerScript ; PLAYEREVENT_TALKTOTRAINER dba FindItemInBallScript ; PLAYEREVENT_ITEMBALL dba EdgeWarpScript ; PLAYEREVENT_CONNECTION dba WarpToNewMapScript ; PLAYEREVENT_WARP dba FallIntoMapScript ; PLAYEREVENT_FALL dba OverworldWhiteoutScript ; PLAYEREVENT_WHITEOUT dba HatchEggScript ; PLAYEREVENT_HATCH dba ChangeDirectionScript ; PLAYEREVENT_JOYCHANGEFACING dba InvalidEventScript ; (NUM_PLAYER_EVENTS) assert_table_length NUM_PLAYER_EVENTS + 1 InvalidEventScript: end UnusedPlayerEventScript: ; unreferenced end HatchEggScript: callasm OverworldHatchEgg end WarpToNewMapScript: warpsound newloadmap MAPSETUP_DOOR end FallIntoMapScript: newloadmap MAPSETUP_FALL playsound SFX_KINESIS applymovement PLAYER, .SkyfallMovement playsound SFX_STRENGTH scall LandAfterPitfallScript end .SkyfallMovement: skyfall step_end LandAfterPitfallScript: earthquake 16 end EdgeWarpScript: reloadend MAPSETUP_CONNECTION ChangeDirectionScript: deactivatefacing 3 callasm EnableWildEncounters end INCLUDE "engine/overworld/scripting.asm" WarpToSpawnPoint:: ld hl, wStatusFlags2 res STATUSFLAGS2_SAFARI_GAME_F, [hl] res STATUSFLAGS2_BUG_CONTEST_TIMER_F, [hl] ret RunMemScript:: ; If there is no script here, we don't need to be here. ld a, [wMapReentryScriptQueueFlag] and a ret z ; Execute the script at (wMapReentryScriptBank):(wMapReentryScriptAddress). ld hl, wMapReentryScriptAddress ld a, [hli] ld h, [hl] ld l, a ld a, [wMapReentryScriptBank] call CallScript scf ; Clear the buffer for the next script. push af xor a ld hl, wMapReentryScriptQueueFlag ld bc, 8 call ByteFill pop af ret LoadScriptBDE:: ; If there's already a script here, don't overwrite. ld hl, wMapReentryScriptQueueFlag ld a, [hl] and a ret nz ; Set the flag ld [hl], 1 inc hl ; Load the script pointer b:de into (wMapReentryScriptBank):(wMapReentryScriptAddress) ld [hl], b inc hl ld [hl], e inc hl ld [hl], d scf ret TryTileCollisionEvent:: call GetFacingTileCoord ld [wFacingTileID], a ld c, a farcall CheckFacingTileForStdScript jr c, .done call CheckCutTreeTile jr nz, .whirlpool farcall TryCutOW jr .done .whirlpool ld a, [wFacingTileID] call CheckWhirlpoolTile jr nz, .waterfall farcall TryWhirlpoolOW jr .done .waterfall ld a, [wFacingTileID] call CheckWaterfallTile jr nz, .headbutt farcall TryWaterfallOW jr .done .headbutt ld a, [wFacingTileID] call CheckHeadbuttTreeTile jr nz, .surf farcall TryHeadbuttOW jr c, .done jr .noevent .surf farcall TrySurfOW jr nc, .noevent jr .done .noevent xor a ret .done call PlayClickSFX ld a, $ff scf ret RandomEncounter:: ; Random encounter call CheckWildEncounterCooldown jr c, .nope call CanUseSweetScent jr nc, .nope ld hl, wStatusFlags2 bit STATUSFLAGS2_BUG_CONTEST_TIMER_F, [hl] jr nz, .bug_contest farcall TryWildEncounter jr nz, .nope jr .ok .bug_contest call _TryWildEncounter_BugContest jr nc, .nope jr .ok_bug_contest .nope ld a, 1 and a ret .ok ld a, BANK(WildBattleScript) ld hl, WildBattleScript jr .done .ok_bug_contest ld a, BANK(BugCatchingContestBattleScript) ld hl, BugCatchingContestBattleScript jr .done .done call CallScript scf ret WildBattleScript: randomwildmon startbattle reloadmapafterbattle end CanUseSweetScent:: ld hl, wStatusFlags bit STATUSFLAGS_NO_WILD_ENCOUNTERS_F, [hl] jr nz, .no ld a, [wEnvironment] cp CAVE jr z, .ice_check cp DUNGEON jr z, .ice_check farcall CheckGrassCollision jr nc, .no .ice_check ld a, [wPlayerStandingTile] call CheckIceTile jr z, .no scf ret .no and a ret _TryWildEncounter_BugContest: call TryWildEncounter_BugContest ret nc call ChooseWildEncounter_BugContest farcall CheckRepelEffect ret ChooseWildEncounter_BugContest:: ; Pick a random mon out of ContestMons. .loop call Random cp 100 << 1 jr nc, .loop srl a ld hl, ContestMons ld de, 4 .CheckMon: sub [hl] jr c, .GotMon add hl, de jr .CheckMon .GotMon: inc hl ; Species ld a, [hli] ld [wTempWildMonSpecies], a ; Min level ld a, [hli] ld d, a ; Max level ld a, [hl] sub d jr nz, .RandomLevel ; If min and max are the same. ld a, d jr .GotLevel .RandomLevel: ; Get a random level between the min and max. ld c, a inc c call Random ldh a, [hRandomAdd] call SimpleDivide add d .GotLevel: ld [wCurPartyLevel], a xor a ret TryWildEncounter_BugContest: ld a, [wPlayerStandingTile] call CheckSuperTallGrassTile ld b, 40 percent jr z, .ok ld b, 20 percent .ok farcall ApplyMusicEffectOnEncounterRate farcall ApplyCleanseTagEffectOnEncounterRate call Random ldh a, [hRandomAdd] cp b ret c ld a, 1 and a ret INCLUDE "data/wild/bug_contest_mons.asm" DoBikeStep:: nop nop ; If the bike shop owner doesn't have our number, or ; if we've already gotten the call, we don't have to ; be here. ld hl, wStatusFlags2 bit STATUSFLAGS2_BIKE_SHOP_CALL_F, [hl] jr z, .NoCall ; If we're not on the bike, we don't have to be here. ld a, [wPlayerState] cp PLAYER_BIKE jr nz, .NoCall ; If we're not in an area of phone service, we don't ; have to be here. call GetMapPhoneService and a jr nz, .NoCall ; Check the bike step count and check whether we've ; taken 65536 of them yet. ld hl, wBikeStep ld a, [hli] ld d, a ld e, [hl] cp 255 jr nz, .increment ld a, e cp 255 jr z, .dont_increment .increment inc de ld [hl], e dec hl ld [hl], d .dont_increment ; If we've taken at least 1024 steps, have the bike ; shop owner try to call us. ld a, d cp HIGH(1024) jr c, .NoCall ; If a call has already been queued, don't overwrite ; that call. ld a, [wSpecialPhoneCallID] and a jr nz, .NoCall ; Queue the call. ld a, SPECIALCALL_BIKESHOP ld [wSpecialPhoneCallID], a xor a ld [wSpecialPhoneCallID + 1], a ld hl, wStatusFlags2 res STATUSFLAGS2_BIKE_SHOP_CALL_F, [hl] scf ret .NoCall: xor a ret INCLUDE "engine/overworld/cmd_queue.asm"