FRLG+ whiteout message (#4967)

* FRLG whiteout message + post whiteout event

data/event_scripts.s

@@ -587,6 +587,37 @@ EventScript_WhiteOut::
 	goto EventScript_ResetMrBriney
 	end
 
+EventScript_AfterWhiteOutHeal::
+	lockall
+	msgbox gText_FirstShouldRestoreMonsHealth
+	call EventScript_PkmnCenterNurse_TakeAndHealPkmn
+	call_if_unset FLAG_DEFEATED_RUSTBORO_GYM, EventScript_AfterWhiteOutHealMsgPreRoxanne
+	call_if_set FLAG_DEFEATED_RUSTBORO_GYM, EventScript_AfterWhiteOutHealMsg
+	applymovement VAR_LAST_TALKED, Movement_PkmnCenterNurse_Bow
+	waitmovement 0
+	fadedefaultbgm
+	releaseall
+	end
+
+EventScript_AfterWhiteOutHealMsgPreRoxanne::
+	msgbox gText_MonsHealedShouldBuyPotions
+	return
+
+EventScript_AfterWhiteOutHealMsg::
+	msgbox gText_MonsHealed
+	return
+
+EventScript_AfterWhiteOutMomHeal::
+	lockall
+	applymovement LOCALID_MOM, Common_Movement_WalkInPlaceFasterDown
+	waitmovement 0
+	msgbox gText_HadQuiteAnExperienceTakeRest
+	call Common_EventScript_OutOfCenterPartyHeal
+	msgbox gText_MomExplainHPGetPotions
+	fadedefaultbgm
+	releaseall
+	end
+
 EventScript_ResetMrBriney::
 	goto_if_eq VAR_BRINEY_LOCATION, 1, EventScript_MoveMrBrineyToHouse
 	goto_if_eq VAR_BRINEY_LOCATION, 2, EventScript_MoveMrBrineyToDewford
@@ -887,6 +918,48 @@ gText_PlayerWhitedOut::
 	.string "{PLAYER} is out of usable\n"
 	.string "POKéMON!\p{PLAYER} whited out!$"
 
+gText_FirstShouldRestoreMonsHealth::
+	.string "First, you should restore your\n"
+	.string "POKéMON to full health.$"
+
+gText_MonsHealedShouldBuyPotions::
+	.string "Your POKéMON have been healed\n"
+	.string "to perfect health.\p"
+	.string "If your POKéMON's energy, HP,\n"
+	.string "is down, please come see us.\p"
+	.string "If you're planning to go far in the\n"
+	.string "field, you should buy some POTIONS\l"
+	.string "at the POKéMON MART.\p"
+	.string "We hope you excel!$"
+
+gText_MonsHealed::
+	.string "Your POKéMON have been healed\n"
+	.string "to perfect health.\p"
+	.string "We hope you excel!$"
+
+gText_HadQuiteAnExperienceTakeRest::
+	.string "MOM: {PLAYER}!\n"
+	.string "Welcome home.\p"
+	.string "It sounds like you had quite\n"
+	.string "an experience.\p"
+	.string "Maybe you should take a quick\n"
+	.string "rest.$"
+
+gText_MomExplainHPGetPotions::
+	.string "MOM: Oh, good! You and your\n"
+	.string "POKéMON are looking great.\p"
+	.string "I just heard from PROF. BIRCH.\p"
+	.string "He said that POKéMON's energy is\n"
+	.string "measured in HP.\p"
+	.string "If your POKéMON lose their HP,\n"
+	.string "you can restore them at any\l"
+	.string "POKéMON CENTER.\p"
+	.string "If you're going to travel far away,\n"
+	.string "the smart TRAINER stocks up on\l"
+	.string "POTIONS at the POKéMON MART.\p"
+	.string "Make me proud, honey!\p"
+	.string "Take care!$"
+
 gText_RegisteredTrainerinPokeNav::
 	.string "Registered {STR_VAR_1} {STR_VAR_2}\n"
 	.string "in the POKéNAV.$"

include/config/overworld.h

@@ -8,6 +8,7 @@
 #define OW_POISON_DAMAGE                GEN_LATEST // In Gen4, Pokémon no longer faint from Poison in the overworld. In Gen5+, they no longer take damage at all.
 #define OW_DOUBLE_APPROACH_WITH_ONE_MON FALSE      // If enabled, you can be spotted by two trainers at the same time even if you only have one eligible Pokémon in your party.
 #define OW_HIDE_REPEAT_MAP_POPUP        FALSE      // If enabled, map popups will not appear if entering a map with the same Map Section Id as the last.
+#define OW_FRLG_WHITEOUT                FALSE      // If enabled, shows an additional whiteout message and post whiteout event script with healing NPC.
 
 // These generational defines only make a distinction for Berries and the OW_PC_MOVE_ORDER
 #define GEN_6_XY GEN_6

include/constants/heal_locations.h

@@ -24,5 +24,6 @@
 #define HEAL_LOCATION_EVER_GRANDE_CITY_POKEMON_LEAGUE 20
 #define HEAL_LOCATION_SOUTHERN_ISLAND_EXTERIOR 21
 #define HEAL_LOCATION_BATTLE_FRONTIER_OUTSIDE_EAST 22
+#define HEAL_LOCATION_COUNT 23
 
 #endif // GUARD_CONSTANTS_HEAL_LOCATIONS_H

include/event_scripts.h

@@ -620,6 +620,8 @@ extern const u8 EventScript_SelectWithoutRegisteredItem[];
 
 // overworld
 extern const u8 EventScript_WhiteOut[];
+extern const u8 EventScript_AfterWhiteOutMomHeal[];
+extern const u8 EventScript_AfterWhiteOutHeal[];
 extern const u8 EventScript_ResetMrBriney[];
 extern const u8 EventScript_DoLinkRoomExit[];
 extern const u8 CableClub_EventScript_TooBusyToNotice[];

include/field_screen_effect.h

@@ -16,6 +16,7 @@ void FieldCB_ReturnToFieldWirelessLink(void);
 void FieldCB_DefaultWarpExit(void);
 void FieldCB_WarpExitFadeFromBlack(void);
 void FieldCB_WarpExitFadeFromWhite(void);
+void FieldCB_RushInjuredPokemonToCenter(void);
 bool8 FieldCB_ReturnToFieldOpenStartMenu(void);
 void ReturnToFieldOpenStartMenu(void);
 void FieldCB_ReturnToFieldNoScript(void);

include/heal_location.h

@@ -10,7 +10,11 @@ struct HealLocation
 };
 
 u32 GetHealLocationIndexByMap(u16 mapGroup, u16 mapNum);
+u32 GetHealLocationIndexByWarpData(struct WarpData *warp);
 const struct HealLocation *GetHealLocationByMap(u16 mapGroup, u16 mapNum);
 const struct HealLocation *GetHealLocation(u32 index);
+bool32 IsLastHealLocationPlayerHouse();
+void SetWhiteoutRespawnWarpAndHealerNPC(struct WarpData * warp);
+u32 GetHealNpcLocalId(u32 healLocationId);
 
 #endif // GUARD_HEAL_LOCATION_H

include/strings.h

@@ -3046,4 +3046,8 @@ extern const u8 gText_PlantBerry[];
 extern const u8 gText_AM[];
 extern const u8 gText_PM[];
 
+// FRLG whiteout
+extern const u8 gText_PlayerScurriedToCenter[];
+extern const u8 gText_PlayerScurriedBackHome[];
+
 #endif // GUARD_STRINGS_H

src/data/heal_locations_pkm_center.h

@@ -0,0 +1,175 @@
+#define DEFAULT_POKEMON_CENTER_COORDS .x = 7, .y = 4
+
+static const struct HealLocation sHealLocationsPokemonCenter[HEAL_LOCATION_COUNT - 1] =
+{
+    [HEAL_LOCATION_LITTLEROOT_TOWN_BRENDANS_HOUSE_2F - 1] =
+    {
+        .group = MAP_GROUP(LITTLEROOT_TOWN_BRENDANS_HOUSE_1F),
+        .map = MAP_NUM(LITTLEROOT_TOWN_BRENDANS_HOUSE_1F),
+        .x = 2,
+        .y = 7,
+    },
+    [HEAL_LOCATION_LITTLEROOT_TOWN_MAYS_HOUSE_2F - 1] =
+    {
+        .group = MAP_GROUP(LITTLEROOT_TOWN_MAYS_HOUSE_1F),
+        .map = MAP_NUM(LITTLEROOT_TOWN_MAYS_HOUSE_1F),
+        .x = 8,
+        .y = 7,
+    },
+    [HEAL_LOCATION_PETALBURG_CITY - 1] =
+    {
+        .group = MAP_GROUP(PETALBURG_CITY_POKEMON_CENTER_1F),
+        .map = MAP_NUM(PETALBURG_CITY_POKEMON_CENTER_1F),
+        DEFAULT_POKEMON_CENTER_COORDS,
+    },
+    [HEAL_LOCATION_SLATEPORT_CITY - 1] =
+    {
+        .group = MAP_GROUP(SLATEPORT_CITY_POKEMON_CENTER_1F), 
+        .map = MAP_NUM(SLATEPORT_CITY_POKEMON_CENTER_1F),
+        DEFAULT_POKEMON_CENTER_COORDS,
+    },
+    [HEAL_LOCATION_MAUVILLE_CITY - 1] =
+    {
+        .group = MAP_GROUP(MAUVILLE_CITY_POKEMON_CENTER_1F),
+        .map = MAP_NUM(MAUVILLE_CITY_POKEMON_CENTER_1F),
+        DEFAULT_POKEMON_CENTER_COORDS,
+    },
+    [HEAL_LOCATION_RUSTBORO_CITY - 1] =
+    {
+        .group = MAP_GROUP(RUSTBORO_CITY_POKEMON_CENTER_1F),
+        .map = MAP_NUM(RUSTBORO_CITY_POKEMON_CENTER_1F),
+        DEFAULT_POKEMON_CENTER_COORDS,
+    },
+    [HEAL_LOCATION_FORTREE_CITY - 1] =
+    {
+        .group = MAP_GROUP(FORTREE_CITY_POKEMON_CENTER_1F),
+        .map = MAP_NUM(FORTREE_CITY_POKEMON_CENTER_1F),
+        DEFAULT_POKEMON_CENTER_COORDS,
+    },
+    [HEAL_LOCATION_LILYCOVE_CITY - 1] =
+    {
+        .group = MAP_GROUP(LILYCOVE_CITY_POKEMON_CENTER_1F),
+        .map = MAP_NUM(LILYCOVE_CITY_POKEMON_CENTER_1F),
+        DEFAULT_POKEMON_CENTER_COORDS,
+    },
+    [HEAL_LOCATION_MOSSDEEP_CITY - 1] =
+    {
+        .group = MAP_GROUP(MOSSDEEP_CITY_POKEMON_CENTER_1F),
+        .map = MAP_NUM(MOSSDEEP_CITY_POKEMON_CENTER_1F),
+        DEFAULT_POKEMON_CENTER_COORDS,
+    },
+    [HEAL_LOCATION_SOOTOPOLIS_CITY - 1] =
+    {
+        .group = MAP_GROUP(SOOTOPOLIS_CITY_POKEMON_CENTER_1F),
+        .map = MAP_NUM(SOOTOPOLIS_CITY_POKEMON_CENTER_1F),
+        DEFAULT_POKEMON_CENTER_COORDS,
+    },
+    [HEAL_LOCATION_EVER_GRANDE_CITY - 1] =
+    {
+        .group = MAP_GROUP(EVER_GRANDE_CITY_POKEMON_CENTER_1F),
+        .map = MAP_NUM(EVER_GRANDE_CITY_POKEMON_CENTER_1F),
+        DEFAULT_POKEMON_CENTER_COORDS,
+    },
+    [HEAL_LOCATION_LITTLEROOT_TOWN_BRENDANS_HOUSE - 1] =
+    {
+        .group = MAP_GROUP(LITTLEROOT_TOWN_BRENDANS_HOUSE_1F),
+        .map = MAP_NUM(LITTLEROOT_TOWN_BRENDANS_HOUSE_1F),
+        .x = 2,
+        .y = 7,
+    },
+    [HEAL_LOCATION_LITTLEROOT_TOWN_MAYS_HOUSE - 1] =
+    {
+        .group = MAP_GROUP(LITTLEROOT_TOWN_MAYS_HOUSE_1F),
+        .map = MAP_NUM(LITTLEROOT_TOWN_MAYS_HOUSE_1F),
+        .x = 8,
+        .y = 7,
+    },
+    [HEAL_LOCATION_OLDALE_TOWN - 1] =
+    {
+        .group = MAP_GROUP(OLDALE_TOWN_POKEMON_CENTER_1F),
+        .map = MAP_NUM(OLDALE_TOWN_POKEMON_CENTER_1F),
+        DEFAULT_POKEMON_CENTER_COORDS,
+    },
+    [HEAL_LOCATION_DEWFORD_TOWN - 1] =
+    {
+        .group = MAP_GROUP(DEWFORD_TOWN_POKEMON_CENTER_1F),
+        .map = MAP_NUM(DEWFORD_TOWN_POKEMON_CENTER_1F),
+        DEFAULT_POKEMON_CENTER_COORDS,
+    },
+    [HEAL_LOCATION_LAVARIDGE_TOWN - 1] =
+    {
+        .group = MAP_GROUP(LAVARIDGE_TOWN_POKEMON_CENTER_1F),
+        .map = MAP_NUM(LAVARIDGE_TOWN_POKEMON_CENTER_1F),
+        DEFAULT_POKEMON_CENTER_COORDS,
+    },
+    [HEAL_LOCATION_FALLARBOR_TOWN - 1] =
+    {
+        .group = MAP_GROUP(FALLARBOR_TOWN_POKEMON_CENTER_1F),
+        .map = MAP_NUM(FALLARBOR_TOWN_POKEMON_CENTER_1F),
+        DEFAULT_POKEMON_CENTER_COORDS,
+    },
+    [HEAL_LOCATION_VERDANTURF_TOWN - 1] =
+    {
+        .group = MAP_GROUP(VERDANTURF_TOWN_POKEMON_CENTER_1F),
+        .map = MAP_NUM(VERDANTURF_TOWN_POKEMON_CENTER_1F),
+        DEFAULT_POKEMON_CENTER_COORDS,
+    },
+    [HEAL_LOCATION_PACIFIDLOG_TOWN - 1] =
+    {
+        .group = MAP_GROUP(PACIFIDLOG_TOWN_POKEMON_CENTER_1F),
+        .map = MAP_NUM(PACIFIDLOG_TOWN_POKEMON_CENTER_1F),
+        DEFAULT_POKEMON_CENTER_COORDS,
+    },
+    [HEAL_LOCATION_EVER_GRANDE_CITY_POKEMON_LEAGUE - 1] =
+    {
+        .group = MAP_GROUP(EVER_GRANDE_CITY_POKEMON_LEAGUE_1F),
+        .map = MAP_NUM(EVER_GRANDE_CITY_POKEMON_LEAGUE_1F),
+        .x = 3,
+        .y = 4,
+    },
+    [HEAL_LOCATION_SOUTHERN_ISLAND_EXTERIOR - 1] =
+    {
+        .group = MAP_GROUP(SOUTHERN_ISLAND_EXTERIOR),
+        .map = MAP_NUM(SOUTHERN_ISLAND_EXTERIOR),
+        .x = 15,
+        .y = 20,
+    },
+    [HEAL_LOCATION_BATTLE_FRONTIER_OUTSIDE_EAST - 1] =
+    {
+        .group = MAP_GROUP(BATTLE_FRONTIER_POKEMON_CENTER_1F),
+        .map = MAP_NUM(BATTLE_FRONTIER_POKEMON_CENTER_1F),
+        DEFAULT_POKEMON_CENTER_COORDS,
+    },
+};
+
+#undef DEFAULT_POKEMON_CENTER_COORDS
+
+// localIds can be found in the generated events.inc file for the specific heal location map
+// e.g. for OldaleTown_PokemonCenter1F/events.inc the following entry gets generated:
+// object_event 1, OBJ_EVENT_GFX_NURSE, 7, 2, 3, MOVEMENT_TYPE_FACE_DOWN, 0, 0, TRAINER_TYPE_NONE, 0, OldaleTown_PokemonCenter_1F_EventScript_Nurse, 0
+// In this case the localId is 1.
+static const u8 sHealNpcLocalId[HEAL_LOCATION_COUNT - 1] =
+{
+    [HEAL_LOCATION_LITTLEROOT_TOWN_BRENDANS_HOUSE_2F - 1] = 1,
+    [HEAL_LOCATION_LITTLEROOT_TOWN_MAYS_HOUSE_2F - 1] = 1,
+    [HEAL_LOCATION_PETALBURG_CITY - 1] = 1,
+    [HEAL_LOCATION_SLATEPORT_CITY - 1] = 1,
+    [HEAL_LOCATION_MAUVILLE_CITY - 1] = 1,
+    [HEAL_LOCATION_RUSTBORO_CITY - 1] = 1,
+    [HEAL_LOCATION_FORTREE_CITY - 1] = 1,
+    [HEAL_LOCATION_LILYCOVE_CITY - 1] = 1,
+    [HEAL_LOCATION_MOSSDEEP_CITY - 1] = 1,
+    [HEAL_LOCATION_SOOTOPOLIS_CITY - 1] = 1,
+    [HEAL_LOCATION_EVER_GRANDE_CITY - 1] = 1,
+    [HEAL_LOCATION_LITTLEROOT_TOWN_BRENDANS_HOUSE - 1] = 1,
+    [HEAL_LOCATION_LITTLEROOT_TOWN_MAYS_HOUSE - 1] = 1,
+    [HEAL_LOCATION_OLDALE_TOWN - 1] = 1,
+    [HEAL_LOCATION_DEWFORD_TOWN - 1] = 1,
+    [HEAL_LOCATION_LAVARIDGE_TOWN - 1] = 1,
+    [HEAL_LOCATION_FALLARBOR_TOWN - 1] = 1,
+    [HEAL_LOCATION_VERDANTURF_TOWN - 1] = 1,
+    [HEAL_LOCATION_PACIFIDLOG_TOWN - 1] = 1,
+    [HEAL_LOCATION_EVER_GRANDE_CITY_POKEMON_LEAGUE - 1] = 1,
+    [HEAL_LOCATION_SOUTHERN_ISLAND_EXTERIOR - 1] = 0, // no heal npc
+    [HEAL_LOCATION_BATTLE_FRONTIER_OUTSIDE_EAST - 1] = 1,
+};

src/field_screen_effect.c

@@ -7,11 +7,13 @@
 #include "field_effect.h"
 #include "event_object_lock.h"
 #include "event_object_movement.h"
+#include "event_scripts.h"
 #include "field_player_avatar.h"
 #include "field_screen_effect.h"
 #include "field_special_scene.h"
 #include "field_weather.h"
 #include "gpu_regs.h"
+#include "heal_location.h"
 #include "io_reg.h"
 #include "link.h"
 #include "link_rfu.h"
@@ -26,10 +28,13 @@
 #include "script.h"
 #include "sound.h"
 #include "start_menu.h"
+#include "strings.h"
+#include "string_util.h"
 #include "task.h"
 #include "text.h"
 #include "constants/event_object_movement.h"
 #include "constants/event_objects.h"
+#include "constants/heal_locations.h"
 #include "constants/songs.h"
 #include "constants/rgb.h"
 #include "trainer_hill.h"
@@ -1274,3 +1279,112 @@ static void Task_EnableScriptAfterMusicFade(u8 taskId)
         ScriptContext_Enable();
     }
 }
+
+static const struct WindowTemplate sWindowTemplate_WhiteoutText =
+{
+    .bg = 0,
+    .tilemapLeft = 0,
+    .tilemapTop = 5,
+    .width = 30,
+    .height = 11,
+    .paletteNum = 15,
+    .baseBlock = 1,
+};
+
+static const u8 sWhiteoutTextColors[] = { TEXT_COLOR_TRANSPARENT, TEXT_COLOR_WHITE, TEXT_COLOR_DARK_GRAY };
+
+#define tState         data[0]
+#define tWindowId      data[1]
+#define tPrintState    data[2]
+#define tIsPlayerHouse data[3]
+
+static bool32 PrintWhiteOutRecoveryMessage(u8 taskId, const u8 *text, u32 x, u32 y)
+{
+    u32 windowId = gTasks[taskId].tWindowId;
+
+    switch (gTasks[taskId].tPrintState)
+    {
+    case 0:
+        FillWindowPixelBuffer(windowId, PIXEL_FILL(0));
+        StringExpandPlaceholders(gStringVar4, text);
+        AddTextPrinterParameterized4(windowId, FONT_NORMAL, x, y, 1, 0, sWhiteoutTextColors, 1, gStringVar4);
+        gTextFlags.canABSpeedUpPrint = FALSE;
+        gTasks[taskId].tPrintState = 1;
+        break;
+    case 1:
+        RunTextPrinters();
+        if (!IsTextPrinterActive(windowId))
+        {
+            gTasks[taskId].tPrintState = 0;
+            return TRUE;
+        }
+        break;
+    }
+    return FALSE;
+}
+
+enum {
+    FRLG_WHITEOUT_ENTER_MSG_SCREEN,
+    FRLG_WHITEOUT_PRINT_MSG,
+    FRLG_WHITEOUT_LEAVE_MSG_SCREEN,
+    FRLG_WHITEOUT_HEAL_SCRIPT,
+};
+
+static void Task_RushInjuredPokemonToCenter(u8 taskId)
+{
+    u32 windowId;
+
+    switch (gTasks[taskId].tState)
+    {
+    case FRLG_WHITEOUT_ENTER_MSG_SCREEN:
+        windowId = AddWindow(&sWindowTemplate_WhiteoutText);
+        gTasks[taskId].tWindowId = windowId;
+        Menu_LoadStdPalAt(BG_PLTT_ID(15));
+        FillWindowPixelBuffer(windowId, PIXEL_FILL(0));
+        PutWindowTilemap(windowId);
+        CopyWindowToVram(windowId, COPYWIN_FULL);
+
+        gTasks[taskId].tIsPlayerHouse = IsLastHealLocationPlayerHouse();
+        gTasks[taskId].tState = FRLG_WHITEOUT_PRINT_MSG;
+        break;
+    case FRLG_WHITEOUT_PRINT_MSG:
+    {
+        const u8 *recoveryMessage = gTasks[taskId].tIsPlayerHouse == TRUE ? gText_PlayerScurriedBackHome : gText_PlayerScurriedToCenter;
+        if (PrintWhiteOutRecoveryMessage(taskId, recoveryMessage, 2, 8))
+        {
+            ObjectEventTurn(&gObjectEvents[gPlayerAvatar.objectEventId], DIR_NORTH);
+            gTasks[taskId].tState = FRLG_WHITEOUT_LEAVE_MSG_SCREEN;
+        }
+        break;
+    }
+    case FRLG_WHITEOUT_LEAVE_MSG_SCREEN:
+        windowId = gTasks[taskId].tWindowId;
+        ClearWindowTilemap(windowId);
+        CopyWindowToVram(windowId, COPYWIN_MAP);
+        RemoveWindow(windowId);
+        FillPalBufferBlack();
+        FadeInFromBlack();
+        gTasks[taskId].tState = FRLG_WHITEOUT_HEAL_SCRIPT;
+        break;
+    case FRLG_WHITEOUT_HEAL_SCRIPT:
+        if (WaitForWeatherFadeIn() == TRUE)
+        {
+            DestroyTask(taskId);
+            if (gTasks[taskId].tIsPlayerHouse)
+                ScriptContext_SetupScript(EventScript_AfterWhiteOutMomHeal);
+            else
+                ScriptContext_SetupScript(EventScript_AfterWhiteOutHeal);
+        }
+        break;
+    }
+}
+
+void FieldCB_RushInjuredPokemonToCenter(void)
+{
+    u8 taskId;
+
+    LockPlayerFieldControls();
+    FillPalBufferBlack();
+    taskId = CreateTask(Task_RushInjuredPokemonToCenter, 10);
+    gTasks[taskId].tState = FRLG_WHITEOUT_ENTER_MSG_SCREEN;
+}

src/heal_location.c

@@ -1,8 +1,11 @@
 #include "global.h"
+#include "event_data.h"
 #include "heal_location.h"
 #include "constants/heal_locations.h"
+#include "constants/maps.h"
 
 #include "data/heal_locations.h"
+#include "data/heal_locations_pkm_center.h"
 
 u32 GetHealLocationIndexByMap(u16 mapGroup, u16 mapNum)
 {
@@ -26,6 +29,20 @@ const struct HealLocation *GetHealLocationByMap(u16 mapGroup, u16 mapNum)
         return &sHealLocations[index - 1];
 }
 
+u32 GetHealLocationIndexByWarpData(struct WarpData *warp)
+{
+    u32 i;
+    for (i = 0; i < ARRAY_COUNT(sHealLocations); i++)
+    {
+        if (sHealLocations[i].group == warp->mapGroup 
+        && sHealLocations[i].map == warp->mapNum 
+        && sHealLocations[i].x == warp->x 
+        && sHealLocations[i].y == warp->y)
+            return i + 1;
+    }
+    return HEAL_LOCATION_NONE;
+}
+
 const struct HealLocation *GetHealLocation(u32 index)
 {
     if (index == HEAL_LOCATION_NONE)
@@ -35,3 +52,55 @@ const struct HealLocation *GetHealLocation(u32 index)
     else
         return &sHealLocations[index - 1];
 }
+
+static bool32 IsLastHealLocation(u32 healLocation)
+{
+    const struct HealLocation *loc = GetHealLocation(healLocation);
+    const struct WarpData *warpData = &gSaveBlock1Ptr->lastHealLocation;
+
+    return warpData->mapGroup == loc->group
+        && warpData->mapNum == loc->map
+        && warpData->warpId == WARP_ID_NONE
+        && warpData->x == loc->x
+        && warpData->y == loc->y;
+}
+
+bool32 IsLastHealLocationPlayerHouse()
+{
+    if (IsLastHealLocation(HEAL_LOCATION_LITTLEROOT_TOWN_MAYS_HOUSE)
+        || IsLastHealLocation(HEAL_LOCATION_LITTLEROOT_TOWN_MAYS_HOUSE_2F)
+        || IsLastHealLocation(HEAL_LOCATION_LITTLEROOT_TOWN_BRENDANS_HOUSE)
+        || IsLastHealLocation(HEAL_LOCATION_LITTLEROOT_TOWN_BRENDANS_HOUSE_2F))
+        return TRUE;
+
+    return FALSE;
+}
+
+u32 GetHealNpcLocalId(u32 healLocationId)
+{
+    if (healLocationId == HEAL_LOCATION_NONE || healLocationId >= HEAL_LOCATION_COUNT)
+        return 0;
+
+    return sHealNpcLocalId[healLocationId - 1];
+}
+
+void SetWhiteoutRespawnWarpAndHealerNPC(struct WarpData *warp)
+{
+    u32 healLocationId = GetHealLocationIndexByWarpData(&gSaveBlock1Ptr->lastHealLocation);
+    u32 healNpcLocalId = GetHealNpcLocalId(healLocationId);
+    struct HealLocation pkmCenterHealLocation;
+    
+    if (!healNpcLocalId)
+    {
+        *(warp) = gSaveBlock1Ptr->lastHealLocation;
+        return;
+    }
+
+    pkmCenterHealLocation = sHealLocationsPokemonCenter[healLocationId - 1];
+    warp->mapGroup = pkmCenterHealLocation.group;
+    warp->mapNum = pkmCenterHealLocation.map;
+    warp->warpId = WARP_ID_NONE;
+    warp->x = pkmCenterHealLocation.x;
+    warp->y = pkmCenterHealLocation.y;
+    gSpecialVar_LastTalked = healNpcLocalId;
+}

src/overworld.c

@@ -689,9 +689,19 @@ void SetWarpDestinationToHealLocation(u8 healLocationId)
         SetWarpDestination(healLocation->group, healLocation->map, WARP_ID_NONE, healLocation->x, healLocation->y);
 }
 
+static bool32 IsFRLGWhiteout(void)
+{
+    if (!OW_FRLG_WHITEOUT)
+        return FALSE;
+    return GetHealNpcLocalId(GetHealLocationIndexByWarpData(&gSaveBlock1Ptr->lastHealLocation)) > 0;
+}
+
 void SetWarpDestinationToLastHealLocation(void)
 {
-    sWarpDestination = gSaveBlock1Ptr->lastHealLocation;
+    if (IsFRLGWhiteout())
+        SetWhiteoutRespawnWarpAndHealerNPC(&sWarpDestination);
+    else
+        sWarpDestination = gSaveBlock1Ptr->lastHealLocation;
 }
 
 void SetLastHealLocationWarp(u8 healLocationId)
@@ -1611,7 +1621,10 @@ void CB2_WhiteOut(void)
         ResetInitialPlayerAvatarState();
         ScriptContext_Init();
         UnlockPlayerFieldControls();
-        gFieldCallback = FieldCB_WarpExitFadeFromBlack;
+        if (IsFRLGWhiteout())
+            gFieldCallback = FieldCB_RushInjuredPokemonToCenter;
+        else
+            gFieldCallback = FieldCB_WarpExitFadeFromBlack;
         state = 0;
         DoMapLoadLoop(&state);
         SetFieldVBlankCallback();

src/strings.c

@@ -1295,6 +1295,8 @@ const u8 gText_Sorry[] = _("SORRY");
 const u8 gText_YaySmileEmoji[] = _("YAY{EMOJI_BIGSMILE}");
 const u8 gText_ThankYou[] = _("THANK YOU");
 const u8 gText_ByeBye[] = _("BYE-BYE!");
+const u8 gText_PlayerScurriedToCenter[] = _("{PLAYER} scurried to a POKéMON CENTER,\nprotecting the exhausted and fainted\nPOKéMON from further harm…\p");
+const u8 gText_PlayerScurriedBackHome[] = _("{PLAYER} scurried back home, protecting\nthe exhausted and fainted POKéMON from\nfurther harm…\p");
 const u8 gText_MatchCallSteven_Strategy[] = _("Attack the weak points!");
 const u8 gText_MatchCallSteven_Pokemon[] = _("Ultimate STEEL POKéMON.");
 const u8 gText_MatchCallSteven_Intro1_BeforeMeteorFallsBattle[] = _("I'd climb even waterfalls");