Merge pull request #431 from PikalaxALT/field_effect_helpers

Field effect helpers

6 files changed, 1662 insertions, 30 deletions

diff --git a/src/field_effect_helpers.c b/src/field_effect_helpers.c
new file mode 100644
index 000000000..2ad8bdce3
--- /dev/null
+++ b/src/field_effect_helpers.c
@@ -0,0 +1,1632 @@
+#include "global.h"
+#include "sprite.h"
+#include "fieldmap.h"
+#include "metatile_behavior.h"
+#include "songs.h"
+#include "sound.h"
+#include "field_map_obj.h"
+#include "field_camera.h"
+#include "field_map_obj_helpers.h"
+#include "field_weather.h"
+#include "field_effect.h"
+#include "field_ground_effect.h"
+#include "field_effect_helpers.h"
+
+static void sub_81269E0(struct Sprite *);
+static void npc_pal_op(struct MapObject *mapObject, struct Sprite *sprite);
+static void npc_pal_op_A(struct MapObject *, u8);
+static void npc_pal_op_B(struct MapObject *, u8);
+static void sub_81275A0(struct Sprite *);
+static void sub_81275C4(struct Sprite *);
+static void sub_8127DA0(struct Sprite *);
+static void sub_8127DD0(struct Sprite *);
+static void sub_8127E30(struct Sprite *);
+static void sub_812882C(struct Sprite *, u8, u8);
+static void sub_81278D8(struct Sprite *);
+static void sub_8127FD4(struct MapObject *, struct Sprite *);
+static void sub_812800C(struct MapObject *, struct Sprite *);
+static void sub_81280A0(struct MapObject *, struct Sprite *, struct Sprite *);
+static void sub_8128174(struct Sprite *);
+static u32 ShowDisguiseFieldEffect(u8, u8, u8);
+
+const u8 UnusedEggString_8401E28[] = _("タマゴ");
+
+const u16 gUnknown_08401E2C[] = {
+    0x0c,
+    0x1c,
+    0x2c
+};
+
+const u8 gUnknown_08401E32[] = {
+    0,
+    1,
+    2,
+    3
+};
+
+const u16 gUnknown_08401E36[] = {
+     4,
+     4,
+     4,
+    16
+};
+
+void (*const gUnknown_08401E40[])(struct Sprite *) = {
+    sub_81275A0,
+    sub_81275C4
+};
+
+void (*const gUnknown_08401E48[])(struct Sprite *) = {
+    sub_8127DA0,
+    sub_8127DD0,
+    sub_8127E30
+};
+
+const u8 gUnknown_08401E54[] = {
+    0,
+    0,
+    1,
+    2,
+    3
+};
+
+const u16 gUnknown_08401E5A[] = {
+    3,
+    7
+};
+
+void SetUpReflection(struct MapObject *mapObject, struct Sprite *sprite, bool8 flag)
+{
+    struct Sprite *newSprite;
+
+    newSprite = &gSprites[obj_unfreeze(sprite, sprite->pos1.x, sprite->pos1.y, 0x98)];
+    newSprite->callback = sub_81269E0;
+    newSprite->oam.priority = 3;
+    newSprite->oam.paletteNum = gUnknown_0830FD14[newSprite->oam.paletteNum];
+    newSprite->usingSheet = TRUE;
+    newSprite->anims = gDummySpriteAnimTable;
+    StartSpriteAnim(newSprite, 0);
+    newSprite->affineAnims = gDummySpriteAffineAnimTable;
+    newSprite->affineAnimBeginning = TRUE;
+    newSprite->subspriteMode = 0;
+    newSprite->data0 = sprite->data0;
+    newSprite->data1 = mapObject->localId;
+    newSprite->data7 = flag;
+    npc_pal_op(mapObject, newSprite);
+    if (!flag)
+    {
+        newSprite->oam.affineMode = 1;
+    }
+}
+
+static s16 sub_81268D0(struct MapObject *mapObject)
+{
+    return GetFieldObjectGraphicsInfo(mapObject->graphicsId)->height - 2;
+}
+
+static void npc_pal_op(struct MapObject *mapObject, struct Sprite *sprite)
+{
+    u8 whichElement;
+    u16 unk_8041e2c[ARRAY_COUNT(gUnknown_08401E2C)];
+
+    memcpy(unk_8041e2c, gUnknown_08401E2C, sizeof gUnknown_08401E2C);
+    sprite->data2 = 0;
+    if (!GetFieldObjectGraphicsInfo(mapObject->graphicsId)->disableReflectionPaletteLoad && ((whichElement = sub_8057450(mapObject->mapobj_unk_1F)) || (whichElement = sub_8057450(mapObject->mapobj_unk_1E))))
+    {
+        sprite->data2 = unk_8041e2c[whichElement - 1];
+        npc_pal_op_A(mapObject, sprite->oam.paletteNum);
+    }
+    else
+    {
+        npc_pal_op_B(mapObject, sprite->oam.paletteNum);
+    }
+}
+
+static void npc_pal_op_B(struct MapObject *mapObject, u8 paletteNum)
+{
+    const struct MapObjectGraphicsInfo *graphicsInfo;
+
+    graphicsInfo = GetFieldObjectGraphicsInfo(mapObject->graphicsId);
+    if (graphicsInfo->paletteTag2 != 0x11ff)
+    {
+        if (graphicsInfo->paletteSlot == 0)
+        {
+            npc_load_two_palettes__no_record(graphicsInfo->paletteTag1, paletteNum);
+        }
+        else if (graphicsInfo->paletteSlot == 10)
+        {
+            npc_load_two_palettes__and_record(graphicsInfo->paletteTag1, paletteNum);
+        }
+        else
+        {
+            pal_patch_for_npc(npc_paltag_by_palslot(paletteNum), paletteNum);
+        }
+        sub_807D78C(paletteNum);
+    }
+}
+
+static void npc_pal_op_A(struct MapObject *mapObject, u8 paletteNum)
+{
+    const struct MapObjectGraphicsInfo *graphicsInfo;
+
+    graphicsInfo = GetFieldObjectGraphicsInfo(mapObject->graphicsId);
+    if (graphicsInfo->paletteTag2 != 0x11ff)
+    {
+        pal_patch_for_npc(graphicsInfo->paletteTag2, paletteNum);
+        sub_807D78C(paletteNum);
+    }
+}
+
+static void sub_81269E0(struct Sprite *sprite)
+{
+    struct MapObject *mapObject;
+    struct Sprite *oldSprite;
+
+    mapObject = &gMapObjects[sprite->data0];
+    oldSprite = &gSprites[mapObject->spriteId];
+    if (!mapObject->active || !mapObject->mapobj_bit_17 || mapObject->localId != sprite->data1)
+    {
+        sprite->inUse = FALSE;
+    }
+    else
+    {
+        sprite->oam.paletteNum = gUnknown_0830FD14[oldSprite->oam.paletteNum];
+        sprite->oam.shape = oldSprite->oam.shape;
+        sprite->oam.size = oldSprite->oam.size;
+        sprite->oam.matrixNum = oldSprite->oam.matrixNum | 0x10;
+        sprite->oam.tileNum = oldSprite->oam.tileNum;
+        sprite->subspriteTables = oldSprite->subspriteTables;
+        sprite->subspriteTableNum = oldSprite->subspriteTableNum;
+        sprite->invisible = oldSprite->invisible;
+        sprite->pos1.x = oldSprite->pos1.x;
+        sprite->pos1.y = oldSprite->pos1.y + sub_81268D0(mapObject) + sprite->data2;
+        sprite->centerToCornerVecX = oldSprite->centerToCornerVecX;
+        sprite->centerToCornerVecY = oldSprite->centerToCornerVecY;
+        sprite->pos2.x = oldSprite->pos2.x;
+        sprite->pos2.y = -oldSprite->pos2.y;
+        sprite->coordOffsetEnabled = oldSprite->coordOffsetEnabled;
+        if (sprite->data7 == FALSE)
+        {
+            sprite->oam.matrixNum = 0;
+            if (oldSprite->oam.matrixNum & 0x8)
+            {
+                sprite->oam.matrixNum = 1;
+            }
+        }
+    }
+}
+
+u8 sub_8126B54(void)
+{
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[8] /*gFieldEffectSpriteTemplate_Arrow*/, 0, 0, 0x52);
+    if (spriteId != MAX_SPRITES)
+    {
+        sprite = &gSprites[spriteId];
+        sprite->oam.priority = 1;
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->invisible = TRUE;
+    }
+    return spriteId;
+}
+
+void objid_set_invisible(u8 spriteId)
+{
+    gSprites[spriteId].invisible = TRUE;
+}
+
+void sub_8126BC4(u8 spriteId, u8 animNum, s16 x, s16 y)
+{
+    s16 x2;
+    s16 y2;
+    struct Sprite *sprite;
+
+    sprite = &gSprites[spriteId];
+    if (sprite->invisible || sprite->data0 != x || sprite->data1 != y)
+    {
+        sub_80603CC(x, y, &x2, &y2);
+        sprite = &gSprites[spriteId];
+        sprite->pos1.x = x2 + 8;
+        sprite->pos1.y = y2 + 8;
+        sprite->invisible = FALSE;
+        sprite->data0 = x;
+        sprite->data1 = y;
+        StartSpriteAnim(sprite, animNum - 1);
+    }
+}
+
+u32 FldEff_Shadow(void)
+{
+    u8 mapObjectId;
+    const struct MapObjectGraphicsInfo *graphicsInfo;
+    u8 spriteId;
+
+    mapObjectId = GetFieldObjectIdByLocalIdAndMap(gFieldEffectArguments[0], gFieldEffectArguments[1], gFieldEffectArguments[2]);
+    graphicsInfo = GetFieldObjectGraphicsInfo(gMapObjects[mapObjectId].graphicsId);
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[gUnknown_08401E32[graphicsInfo->shadowSize]], 0, 0, 0x94);
+    if (spriteId != MAX_SPRITES)
+    {
+        gSprites[spriteId].coordOffsetEnabled = TRUE;
+        gSprites[spriteId].data0 = gFieldEffectArguments[0];
+        gSprites[spriteId].data1 = gFieldEffectArguments[1];
+        gSprites[spriteId].data2 = gFieldEffectArguments[2];
+        gSprites[spriteId].data3 = (graphicsInfo->height >> 1) - gUnknown_08401E36[graphicsInfo->shadowSize];
+    }
+    return 0;
+}
+
+void oamc_shadow(struct Sprite *sprite)
+{
+    u8 mapObjectId;
+    struct MapObject *mapObject;
+    struct Sprite *linkedSprite;
+
+    if (TryGetFieldObjectIdByLocalIdAndMap(sprite->data0, sprite->data1, sprite->data2, &mapObjectId))
+    {
+        FieldEffectStop(sprite, FLDEFF_SHADOW);
+    }
+    else
+    {
+        mapObject = &gMapObjects[mapObjectId];
+        linkedSprite = &gSprites[mapObject->spriteId];
+        sprite->oam.priority = linkedSprite->oam.priority;
+        sprite->pos1.x = linkedSprite->pos1.x;
+        sprite->pos1.y = linkedSprite->pos1.y + sprite->data3;
+        if (!mapObject->active || !mapObject->mapobj_bit_22 || MetatileBehavior_IsPokeGrass(mapObject->mapobj_unk_1E) || MetatileBehavior_IsSurfableWaterOrUnderwater(mapObject->mapobj_unk_1E) || MetatileBehavior_IsSurfableWaterOrUnderwater(mapObject->mapobj_unk_1F) || MetatileBehavior_IsReflective(mapObject->mapobj_unk_1E) || MetatileBehavior_IsReflective(mapObject->mapobj_unk_1F))
+        {
+            FieldEffectStop(sprite, FLDEFF_SHADOW);
+        }
+    }
+}
+
+u32 FldEff_TallGrass(void)
+{
+    s16 x;
+    s16 y;
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    x = gFieldEffectArguments[0];
+    y = gFieldEffectArguments[1];
+    sub_8060470(&x, &y, 8, 8);
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[4], x, y, 0);
+    if (spriteId != MAX_SPRITES)
+    {
+        sprite = &gSprites[spriteId];
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->oam.priority = gFieldEffectArguments[3];
+        sprite->data0 = gFieldEffectArguments[2];
+        sprite->data1 = gFieldEffectArguments[0];
+        sprite->data2 = gFieldEffectArguments[1];
+        sprite->data3 = gFieldEffectArguments[4];
+        sprite->data4 = gFieldEffectArguments[5];
+        sprite->data5 = gFieldEffectArguments[6];
+        if (gFieldEffectArguments[7])
+        {
+            SeekSpriteAnim(sprite, 4);
+        }
+    }
+    return 0;
+}
+
+void unc_grass_normal(struct Sprite *sprite)
+{
+    u8 mapNum;
+    u8 mapGroup;
+    u8 metatileBehavior;
+    u8 localId;
+    u8 mapObjectId;
+    struct MapObject *mapObject;
+
+    mapNum = sprite->data5 >> 8;
+    mapGroup = sprite->data5;
+    if (gCamera.field_0 && (gSaveBlock1.location.mapNum != mapNum || gSaveBlock1.location.mapGroup != mapGroup))
+    {
+        sprite->data1 -= gCamera.x;
+        sprite->data2 -= gCamera.y;
+        sprite->data5 = ((u8)gSaveBlock1.location.mapNum << 8) | (u8)gSaveBlock1.location.mapGroup;
+    }
+    localId = sprite->data3 >> 8;
+    mapNum = sprite->data3;
+    mapGroup = sprite->data4;
+    metatileBehavior = MapGridGetMetatileBehaviorAt(sprite->data1, sprite->data2);
+    if (TryGetFieldObjectIdByLocalIdAndMap(localId, mapNum, mapGroup, &mapObjectId) || !MetatileBehavior_IsTallGrass(metatileBehavior) || (sprite->data7 && sprite->animEnded))
+    {
+        FieldEffectStop(sprite, FLDEFF_TALL_GRASS);
+    }
+    else
+    {
+        mapObject = &gMapObjects[mapObjectId];
+        if ((mapObject->coords2.x != sprite->data1 || mapObject->coords2.y != sprite->data2) && (mapObject->coords3.x != sprite->data1 || mapObject->coords3.y != sprite->data2))
+        {
+            sprite->data7 = TRUE;
+        }
+        metatileBehavior = 0;
+        if (sprite->animCmdIndex == 0)
+        {
+            metatileBehavior = 4;
+        }
+        sub_806487C(sprite, 0);
+        sub_812882C(sprite, sprite->data0, metatileBehavior);
+    }
+}
+
+u32 FldEff_JumpTallGrass(void)
+{
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    sub_8060470((s16 *)&gFieldEffectArguments[0], (s16 *)&gFieldEffectArguments[1], 8, 12);
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[10], gFieldEffectArguments[0], gFieldEffectArguments[1], 0);
+    if (spriteId != MAX_SPRITES)
+    {
+        sprite = &gSprites[spriteId];
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->oam.priority = gFieldEffectArguments[3];
+        sprite->data0 = gFieldEffectArguments[2];
+        sprite->data1 = 12;
+    }
+    return 0;
+}
+
+u8 sub_8126FF0(u8 localId, u8 mapNum, u8 mapGroup, s16 x, s16 y)
+{
+    struct Sprite *sprite;
+    u8 i;
+
+    for (i = 0; i < MAX_SPRITES; i ++)
+    {
+        if (gSprites[i].inUse)
+        {
+            sprite = &gSprites[i];
+            if (sprite->callback == unc_grass_normal && (x == sprite->data1 && y == sprite->data2) && (localId == (u8)(sprite->data3 >> 8) && mapNum == (sprite->data3 & 0xFF) && mapGroup == sprite->data4))
+            {
+                return i;
+            }
+        }
+    }
+    return MAX_SPRITES;
+}
+
+u32 FldEff_LongGrass(void)
+{
+    s16 x;
+    s16 y;
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    x = gFieldEffectArguments[0];
+    y = gFieldEffectArguments[1];
+    sub_8060470(&x, &y, 8, 8);
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[15], x, y, 0);
+    if (spriteId != MAX_SPRITES)
+    {
+        sprite = &gSprites[spriteId];
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->oam.priority = ZCoordToPriority(gFieldEffectArguments[2]);
+        sprite->data0 = gFieldEffectArguments[2];
+        sprite->data1 = gFieldEffectArguments[0];
+        sprite->data2 = gFieldEffectArguments[1];
+        sprite->data3 = gFieldEffectArguments[4];
+        sprite->data4 = gFieldEffectArguments[5];
+        sprite->data5 = gFieldEffectArguments[6];
+        if (gFieldEffectArguments[7])
+        {
+            SeekSpriteAnim(sprite, 6);
+        }
+    }
+    return 0;
+}
+
+void unc_grass_tall(struct Sprite *sprite)
+{
+    u8 mapNum;
+    u8 mapGroup;
+    u8 metatileBehavior;
+    u8 localId;
+    u8 mapObjectId;
+    struct MapObject *mapObject;
+
+    mapNum = sprite->data5 >> 8;
+    mapGroup = sprite->data5;
+    if (gCamera.field_0 && (gSaveBlock1.location.mapNum != mapNum || gSaveBlock1.location.mapGroup != mapGroup))
+    {
+        sprite->data1 -= gCamera.x;
+        sprite->data2 -= gCamera.y;
+        sprite->data5 = ((u8)gSaveBlock1.location.mapNum << 8) | (u8)gSaveBlock1.location.mapGroup;
+    }
+    localId = sprite->data3 >> 8;
+    mapNum = sprite->data3;
+    mapGroup = sprite->data4;
+    metatileBehavior = MapGridGetMetatileBehaviorAt(sprite->data1, sprite->data2);
+    if (TryGetFieldObjectIdByLocalIdAndMap(localId, mapNum, mapGroup, &mapObjectId) || !MetatileBehavior_IsLongGrass(metatileBehavior) || (sprite->data7 && sprite->animEnded))
+    {
+        FieldEffectStop(sprite, FLDEFF_LONG_GRASS);
+    }
+    else
+    {
+        mapObject = &gMapObjects[mapObjectId];
+        if ((mapObject->coords2.x != sprite->data1 || mapObject->coords2.y != sprite->data2) && (mapObject->coords3.x != sprite->data1 || mapObject->coords3.y != sprite->data2))
+        {
+            sprite->data7 = TRUE;
+        }
+        sub_806487C(sprite, 0);
+        sub_812882C(sprite, sprite->data0, 0);
+    }
+}
+
+u32 FldEff_JumpLongGrass(void)
+{
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    sub_8060470((s16 *)&gFieldEffectArguments[0], (s16 *)&gFieldEffectArguments[1], 8, 8);
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[16], gFieldEffectArguments[0], gFieldEffectArguments[1], 0);
+    if (spriteId != MAX_SPRITES)
+    {
+        sprite = &gSprites[spriteId];
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->oam.priority = gFieldEffectArguments[3];
+        sprite->data0 = gFieldEffectArguments[2];
+        sprite->data1 = 18;
+    }
+    return 0;
+}
+
+u32 FldEff_ShortGrass(void)
+{
+    u8 mapObjectId;
+    struct MapObject *mapObject;
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    mapObjectId = GetFieldObjectIdByLocalIdAndMap(gFieldEffectArguments[0], gFieldEffectArguments[1], gFieldEffectArguments[2]);
+    mapObject = &gMapObjects[mapObjectId];
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[30], 0, 0, 0);
+    if (spriteId != MAX_SPRITES)
+    {
+        sprite = &(gSprites[spriteId]);
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->oam.priority = gSprites[mapObject->spriteId].oam.priority;
+        sprite->data0 = gFieldEffectArguments[0];
+        sprite->data1 = gFieldEffectArguments[1];
+        sprite->data2 = gFieldEffectArguments[2];
+        sprite->data3 = gSprites[mapObject->spriteId].pos1.x;
+        sprite->data4 = gSprites[mapObject->spriteId].pos1.y;
+    }
+    return 0;
+}
+
+void sub_8127334(struct Sprite *sprite)
+{
+    u8 mapObjectId;
+    s16 x;
+    s16 y;
+    const struct MapObjectGraphicsInfo *graphicsInfo;
+    struct Sprite *linkedSprite;
+
+    if (TryGetFieldObjectIdByLocalIdAndMap(sprite->data0, sprite->data1, sprite->data2, &mapObjectId) || !gMapObjects[mapObjectId].mapobj_bit_18)
+    {
+        FieldEffectStop(sprite, FLDEFF_SHORT_GRASS);
+    }
+    else
+    {
+        graphicsInfo = GetFieldObjectGraphicsInfo(gMapObjects[mapObjectId].graphicsId);
+        linkedSprite = &gSprites[gMapObjects[mapObjectId].spriteId];
+        y = linkedSprite->pos1.y;
+        x = linkedSprite->pos1.x;
+        if (x != sprite->data3 || y != sprite->data4)
+        {
+            sprite->data3 = x;
+            sprite->data4 = y;
+            if (sprite->animEnded)
+            {
+                StartSpriteAnim(sprite, 0);
+            }
+        }
+        sprite->pos1.x = x;
+        sprite->pos1.y = y;
+        sprite->pos2.y = (graphicsInfo->height >> 1) - 8;
+        sprite->subpriority = linkedSprite->subpriority - 1;
+        sprite->oam.priority = linkedSprite->oam.priority;
+        sub_806487C(sprite, linkedSprite->invisible);
+    }
+}
+
+u32 FldEff_SandFootprints(void)
+{
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    sub_8060470((s16 *)&gFieldEffectArguments[0], (s16 *)&gFieldEffectArguments[1], 8, 8);
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[11], gFieldEffectArguments[0], gFieldEffectArguments[1], gFieldEffectArguments[2]);
+    if (spriteId != MAX_SPRITES)
+    {
+        sprite = &gSprites[spriteId];
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->oam.priority = gFieldEffectArguments[3];
+        sprite->data7 = FLDEFF_SAND_FOOTPRINTS;
+        StartSpriteAnim(sprite, gFieldEffectArguments[4]);
+    }
+    return 0;
+}
+
+u32 FldEff_DeepSandFootprints(void)
+{
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    sub_8060470((s16 *)&gFieldEffectArguments[0], (s16 *)&gFieldEffectArguments[1], 8, 8);
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[23], gFieldEffectArguments[0], gFieldEffectArguments[1], gFieldEffectArguments[2]);
+    if (spriteId != MAX_SPRITES)
+    {
+        sprite = &gSprites[spriteId];
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->oam.priority = gFieldEffectArguments[3];
+        sprite->data7 = FLDEFF_DEEP_SAND_FOOTPRINTS;
+        StartSpriteAnim(sprite, gFieldEffectArguments[4]);
+    }
+    return spriteId;
+}
+
+u32 FldEff_BikeTireTracks(void)
+{
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    sub_8060470((s16 *)&gFieldEffectArguments[0], (s16 *)&gFieldEffectArguments[1], 8, 8);
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[27], gFieldEffectArguments[0], gFieldEffectArguments[1], gFieldEffectArguments[2]);
+    if (spriteId != MAX_SPRITES)
+    {
+        sprite = &gSprites[spriteId];
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->oam.priority = gFieldEffectArguments[3];
+        sprite->data7 = FLDEFF_BIKE_TIRE_TRACKS;
+        StartSpriteAnim(sprite, gFieldEffectArguments[4]);
+    }
+    return spriteId;
+}
+
+void sub_8127584(struct Sprite *sprite)
+{
+    gUnknown_08401E40[sprite->data0](sprite);
+}
+
+static void sub_81275A0(struct Sprite *sprite)
+{
+    if (++sprite->data1 > 40)
+    {
+        sprite->data0 = 1;
+    }
+    sub_806487C(sprite, FALSE);
+}
+
+static void sub_81275C4(struct Sprite *sprite)
+{
+    sprite->invisible ^= 1;
+    sprite->data1 ++;
+    sub_806487C(sprite, sprite->invisible);
+    if (sprite->data1 > 56)
+    {
+        FieldEffectStop(sprite, sprite->data7);
+    }
+}
+
+u32 FldEff_Splash(void)
+{
+    u8 mapObjectId;
+    struct MapObject *mapObject;
+    u8 spriteId;
+    struct Sprite *sprite;
+    const struct MapObjectGraphicsInfo *graphicsInfo;
+    struct Sprite *linkedSprite;
+
+    mapObjectId = GetFieldObjectIdByLocalIdAndMap(gFieldEffectArguments[0], gFieldEffectArguments[1], gFieldEffectArguments[2]);
+    mapObject = &gMapObjects[mapObjectId];
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[13], 0, 0, 0);
+    if (spriteId != MAX_SPRITES)
+    {
+        graphicsInfo = GetFieldObjectGraphicsInfo(mapObject->graphicsId);
+        sprite = &gSprites[spriteId];
+        sprite->coordOffsetEnabled = TRUE;
+        linkedSprite = &gSprites[mapObject->spriteId];
+        sprite->oam.priority = linkedSprite->oam.priority;
+        sprite->data0 = gFieldEffectArguments[0];
+        sprite->data1 = gFieldEffectArguments[1];
+        sprite->data2 = gFieldEffectArguments[2];
+        sprite->pos2.y = (graphicsInfo->height >> 1) - 4;
+        PlaySE(SE_MIZU);
+    }
+    return 0;
+}
+
+void sub_81276B4(struct Sprite *sprite)
+{
+    u8 mapObjectId;
+
+    if (sprite->animEnded || TryGetFieldObjectIdByLocalIdAndMap(sprite->data0, sprite->data1, sprite->data2, &mapObjectId))
+    {
+        FieldEffectStop(sprite, FLDEFF_SPLASH);
+    }
+    else
+    {
+        sprite->pos1.x = gSprites[gMapObjects[mapObjectId].spriteId].pos1.x;
+        sprite->pos1.y = gSprites[gMapObjects[mapObjectId].spriteId].pos1.y;
+        sub_806487C(sprite, FALSE);
+    }
+}
+
+u32 FldEff_JumpSmallSplash(void)
+{
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    sub_8060470((s16 *)&gFieldEffectArguments[0], (s16 *)&gFieldEffectArguments[1], 8, 12);
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[14], gFieldEffectArguments[0], gFieldEffectArguments[1], 0);
+    if (spriteId != MAX_SPRITES)
+    {
+        sprite = &gSprites[spriteId];
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->oam.priority = gFieldEffectArguments[3];
+        sprite->data0 = gFieldEffectArguments[2];
+        sprite->data1 = FLDEFF_JUMP_SMALL_SPLASH;
+    }
+    return 0;
+}
+
+u32 FldEff_JumpBigSplash(void)
+{
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    sub_8060470((s16 *)&gFieldEffectArguments[0], (s16 *)&gFieldEffectArguments[1], 8, 8);
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[12], gFieldEffectArguments[0], gFieldEffectArguments[1], 0);
+    if (spriteId != MAX_SPRITES)
+    {
+        sprite = &gSprites[spriteId];
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->oam.priority = gFieldEffectArguments[3];
+        sprite->data0 = gFieldEffectArguments[2];
+        sprite->data1 = FLDEFF_JUMP_BIG_SPLASH;
+    }
+    return 0;
+}
+
+u32 FldEff_FeetInFlowingWater(void)
+{
+    u8 mapObjectId;
+    struct MapObject *mapObject;
+    u8 spriteId;
+    struct Sprite *sprite;
+    const struct MapObjectGraphicsInfo *graphicsInfo;
+
+    mapObjectId = GetFieldObjectIdByLocalIdAndMap(gFieldEffectArguments[0], gFieldEffectArguments[1], gFieldEffectArguments[2]);
+    mapObject = &gMapObjects[mapObjectId];
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[13], 0, 0, 0);
+    if (spriteId != MAX_SPRITES)
+    {
+        graphicsInfo = GetFieldObjectGraphicsInfo(mapObject->graphicsId);
+        sprite = &gSprites[spriteId];
+        sprite->callback = sub_81278D8;
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->oam.priority = gSprites[mapObject->spriteId].oam.priority;
+        sprite->data0 = gFieldEffectArguments[0];
+        sprite->data1 = gFieldEffectArguments[1];
+        sprite->data2 = gFieldEffectArguments[2];
+        sprite->data3 = -1;
+        sprite->data4 = -1;
+        sprite->pos2.y = (graphicsInfo->height >> 1) - 4;
+        StartSpriteAnim(sprite, 1);
+    }
+    return 0;
+}
+
+static void sub_81278D8(struct Sprite *sprite)
+{
+    u8 mapObjectId;
+    struct Sprite *linkedSprite;
+    struct MapObject *mapObject;
+
+    if (TryGetFieldObjectIdByLocalIdAndMap(sprite->data0, sprite->data1, sprite->data2, &mapObjectId) || !gMapObjects[mapObjectId].mapobj_bit_19)
+    {
+        FieldEffectStop(sprite, FLDEFF_FEET_IN_FLOWING_WATER);
+    }
+    else
+    {
+        mapObject = &gMapObjects[mapObjectId];
+        linkedSprite = &gSprites[mapObject->spriteId];
+        sprite->pos1.x = linkedSprite->pos1.x;
+        sprite->pos1.y = linkedSprite->pos1.y;
+        sprite->subpriority = linkedSprite->subpriority;
+        sub_806487C(sprite, FALSE);
+        if (mapObject->coords2.x != sprite->data3 || mapObject->coords2.y != sprite->data4)
+        {
+            sprite->data3 = mapObject->coords2.x;
+            sprite->data4 = mapObject->coords2.y;
+            if (!sprite->invisible)
+            {
+                PlaySE(SE_MIZU);
+            }
+        }
+    }
+}
+
+u32 FldEff_Ripple(void)
+{
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[5], gFieldEffectArguments[0], gFieldEffectArguments[1], gFieldEffectArguments[2]);
+    if (spriteId != MAX_SPRITES)
+    {
+        sprite = &gSprites[spriteId];
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->oam.priority = gFieldEffectArguments[3];
+        sprite->data0 = FLDEFF_RIPPLE;
+    }
+    return 0;
+}
+
+u32 FldEff_HotSpringsWater(void)
+{
+    u8 mapObjectId;
+    struct MapObject *mapObject;
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    mapObjectId = GetFieldObjectIdByLocalIdAndMap(gFieldEffectArguments[0], gFieldEffectArguments[1], gFieldEffectArguments[2]);
+    mapObject = &gMapObjects[mapObjectId];
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[31], 0, 0, 0);
+    if (spriteId != MAX_SPRITES)
+    {
+        sprite = &gSprites[spriteId];
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->oam.priority = gSprites[mapObject->spriteId].oam.priority;
+        sprite->data0 = gFieldEffectArguments[0];
+        sprite->data1 = gFieldEffectArguments[1];
+        sprite->data2 = gFieldEffectArguments[2];
+        sprite->data3 = gSprites[mapObject->spriteId].pos1.x;
+        sprite->data4 = gSprites[mapObject->spriteId].pos1.y;
+    }
+    return 0;
+}
+
+void sub_8127A7C(struct Sprite *sprite)
+{
+    u8 mapObjectId;
+    const struct MapObjectGraphicsInfo *graphicsInfo;
+    struct Sprite *linkedSprite;
+
+    if (TryGetFieldObjectIdByLocalIdAndMap(sprite->data0, sprite->data1, sprite->data2, &mapObjectId) || !gMapObjects[mapObjectId].mapobj_bit_21)
+    {
+        FieldEffectStop(sprite, FLDEFF_HOT_SPRINGS_WATER);
+    }
+    else
+    {
+        graphicsInfo = GetFieldObjectGraphicsInfo(gMapObjects[mapObjectId].graphicsId);
+        linkedSprite = &gSprites[gMapObjects[mapObjectId].spriteId];
+        sprite->pos1.x = linkedSprite->pos1.x;
+        sprite->pos1.y = (graphicsInfo->height >> 1) + linkedSprite->pos1.y - 8;
+        sprite->subpriority = linkedSprite->subpriority - 1;
+        sub_806487C(sprite, FALSE);
+    }
+}
+
+u32 FldEff_Unknown19(void)
+{
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    sub_8060470((s16 *)&gFieldEffectArguments[0], (s16 *)&gFieldEffectArguments[1], 8, 8);
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[17], gFieldEffectArguments[0], gFieldEffectArguments[1], gFieldEffectArguments[2]);
+    if (spriteId != MAX_SPRITES)
+    {
+        sprite = &gSprites[spriteId];
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->oam.priority = gFieldEffectArguments[3];
+        sprite->data0 = FLDEFF_UNKNOWN_19;
+    }
+    return 0;
+}
+
+u32 FldEff_Unknown20(void)
+{
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    sub_8060470((s16 *)&gFieldEffectArguments[0], (s16 *)&gFieldEffectArguments[1], 8, 8);
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[18], gFieldEffectArguments[0], gFieldEffectArguments[1], gFieldEffectArguments[2]);
+    if (spriteId != MAX_SPRITES)
+    {
+        sprite = &gSprites[spriteId];
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->oam.priority = gFieldEffectArguments[3];
+        sprite->data0 = FLDEFF_UNKNOWN_20;
+    }
+    return 0;
+}
+
+u32 FldEff_Unknown21(void)
+{
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    sub_8060470((s16 *)&gFieldEffectArguments[0], (s16 *)&gFieldEffectArguments[1], 8, 8);
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[19], gFieldEffectArguments[0], gFieldEffectArguments[1], gFieldEffectArguments[2]);
+    if (spriteId != MAX_SPRITES)
+    {
+        sprite = &gSprites[spriteId];
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->oam.priority = gFieldEffectArguments[3];
+        sprite->data0 = FLDEFF_UNKNOWN_21;
+    }
+    return 0;
+}
+
+u32 FldEff_Unknown22(void)
+{
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    sub_8060470((s16 *)&gFieldEffectArguments[0], (s16 *)&gFieldEffectArguments[1], 8, 8);
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[20], gFieldEffectArguments[0], gFieldEffectArguments[1], gFieldEffectArguments[2]);
+    if (spriteId != MAX_SPRITES)
+    {
+        sprite = &gSprites[spriteId];
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->oam.priority = gFieldEffectArguments[3];
+        sprite->data0 = FLDEFF_UNKNOWN_22;
+    }
+    return 0;
+}
+
+void ash(s16 x, s16 y, u16 c, s16 d)
+{
+    gFieldEffectArguments[0] = x;
+    gFieldEffectArguments[1] = y;
+    gFieldEffectArguments[2] = 0x52;
+    gFieldEffectArguments[3] = 1;
+    gFieldEffectArguments[4] = c;
+    gFieldEffectArguments[5] = d;
+    FieldEffectStart(FLDEFF_ASH);
+}
+
+u32 FldEff_Ash(void)
+{
+    s16 x;
+    s16 y;
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    x = gFieldEffectArguments[0];
+    y = gFieldEffectArguments[1];
+    sub_8060470(&x, &y, 8, 8);
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[6], x, y, gFieldEffectArguments[2]);
+    if (spriteId != MAX_SPRITES)
+    {
+        sprite = &gSprites[spriteId];
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->oam.priority = gFieldEffectArguments[3];
+        sprite->data1 = gFieldEffectArguments[0];
+        sprite->data2 = gFieldEffectArguments[1];
+        sprite->data3 = gFieldEffectArguments[4];
+        sprite->data4 = gFieldEffectArguments[5];
+    }
+    return 0;
+}
+
+void sub_8127D84(struct Sprite *sprite)
+{
+    gUnknown_08401E48[sprite->data0](sprite);
+}
+
+static void sub_8127DA0(struct Sprite *sprite)
+{
+    sprite->invisible = TRUE;
+    sprite->animPaused = TRUE;
+    if (--sprite->data4 == 0)
+    {
+        sprite->data0 = 1;
+    }
+}
+
+static void sub_8127DD0(struct Sprite *sprite)
+{
+    sprite->invisible = FALSE;
+    sprite->animPaused = FALSE;
+    MapGridSetMetatileIdAt(sprite->data1, sprite->data2, sprite->data3);
+    CurrentMapDrawMetatileAt(sprite->data1, sprite->data2);
+    gMapObjects[gPlayerAvatar.mapObjectId].mapobj_bit_2 = TRUE;
+    sprite->data0 = 2;
+}
+
+static void sub_8127E30(struct Sprite *sprite)
+{
+    sub_806487C(sprite, FALSE);
+    if (sprite->animEnded)
+    {
+        FieldEffectStop(sprite, FLDEFF_ASH);
+    }
+}
+
+u32 FldEff_SurfBlob(void)
+{
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    sub_8060470((s16 *)&gFieldEffectArguments[0], (s16 *)&gFieldEffectArguments[1], 8, 8);
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[7], gFieldEffectArguments[0], gFieldEffectArguments[1], 0x96);
+    if (spriteId !=MAX_SPRITES)
+    {
+        sprite = &gSprites[spriteId];
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->oam.paletteNum = 0;
+        sprite->data2 = gFieldEffectArguments[2];
+        sprite->data3 = -1;
+        sprite->data6 = -1;
+        sprite->data7 = -1;
+    }
+    FieldEffectActiveListRemove(FLDEFF_SURF_BLOB);
+    return spriteId;
+}
+
+void sub_8127ED0(u8 spriteId, u8 value)
+{
+    gSprites[spriteId].data0 = (gSprites[spriteId].data0 & ~0xF) | (value & 0xF);
+}
+
+void sub_8127EFC(u8 spriteId, u8 value)
+{
+    gSprites[spriteId].data0 = (gSprites[spriteId].data0 & ~0xF0) | ((value & 0xF) << 4);
+}
+
+void sub_8127F28(u8 spriteId, u8 value, s16 data1)
+{
+    gSprites[spriteId].data0 = (gSprites[spriteId].data0 & ~0xF00) | ((value & 0xF) << 8);
+    gSprites[spriteId].data1 = data1;
+}
+
+static u8 sub_8127F5C(struct Sprite *sprite)
+{
+    return sprite->data0 & 0xF;
+}
+
+static u8 sub_8127F64(struct Sprite *sprite)
+{
+    return (sprite->data0 & 0xF0) >> 4;
+}
+
+static u8 sub_8127F70(struct Sprite *sprite)
+{
+    return (sprite->data0 & 0xF00) >> 8;
+}
+
+void sub_8127F7C(struct Sprite *sprite)
+{
+    struct MapObject *mapObject;
+    struct Sprite *linkedSprite;
+
+    mapObject = &gMapObjects[sprite->data2];
+    linkedSprite = &gSprites[mapObject->spriteId];
+    sub_8127FD4(mapObject, sprite);
+    sub_812800C(mapObject, sprite);
+    sub_81280A0(mapObject, linkedSprite, sprite);
+    sprite->oam.priority = linkedSprite->oam.priority;
+}
+
+static void sub_8127FD4(struct MapObject *mapObject, struct Sprite *sprite)
+{
+    u8 unk_8041E54[ARRAY_COUNT(gUnknown_08401E54)];
+
+    memcpy(unk_8041E54, gUnknown_08401E54, sizeof gUnknown_08401E54);
+    if (sub_8127F64(sprite) == 0)
+    {
+        StartSpriteAnimIfDifferent(sprite, unk_8041E54[mapObject->placeholder18]);
+    }
+}
+
+#ifdef NONMATCHING
+static void sub_812800C(struct MapObject *mapObject, struct Sprite *sprite)
+{
+    s16 x;
+    s16 y;
+    u8 i;
+
+    x = mapObject->coords2.x;
+    y = mapObject->coords2.y;
+    if (sprite->pos2.y == 0 && (x != sprite->data6 || y != sprite->data7))
+    {
+        sprite->data5 = sprite->pos2.y;
+        for (sprite->data6 = x, sprite->data7 = y, i = DIR_SOUTH; i <= DIR_EAST; i ++, x = sprite->data6, y = sprite->data7)
+        {
+            MoveCoords(i, &x, &y);
+            if (MapGridGetZCoordAt(x, y) == 3)
+            {
+                sprite->data5 ++;
+                break;
+            }
+        }
+    }
+}
+#else
+__attribute__((naked)) static void sub_812800C(struct MapObject *mapObject, struct Sprite *sprite)
+{
+    asm_unified("\tpush {r4-r7,lr}\n"
+                    "\tmov r7, r8\n"
+                    "\tpush {r7}\n"
+                    "\tsub sp, 0x4\n"
+                    "\tadds r4, r1, 0\n"
+                    "\tldrh r2, [r0, 0x10]\n"
+                    "\tmov r1, sp\n"
+                    "\tstrh r2, [r1]\n"
+                    "\tldrh r1, [r0, 0x12]\n"
+                    "\tmov r0, sp\n"
+                    "\tadds r0, 0x2\n"
+                    "\tstrh r1, [r0]\n"
+                    "\tmovs r2, 0x26\n"
+                    "\tldrsh r3, [r4, r2]\n"
+                    "\tmov r8, r0\n"
+                    "\tcmp r3, 0\n"
+                    "\tbne _08128094\n"
+                    "\tmov r0, sp\n"
+                    "\tmovs r5, 0\n"
+                    "\tldrsh r2, [r0, r5]\n"
+                    "\tmovs r5, 0x3A\n"
+                    "\tldrsh r0, [r4, r5]\n"
+                    "\tcmp r2, r0\n"
+                    "\tbne _08128048\n"
+                    "\tlsls r0, r1, 16\n"
+                    "\tasrs r0, 16\n"
+                    "\tmovs r5, 0x3C\n"
+                    "\tldrsh r1, [r4, r5]\n"
+                    "\tcmp r0, r1\n"
+                    "\tbeq _08128094\n"
+                    "_08128048:\n"
+                    "\tstrh r3, [r4, 0x38]\n"
+                    "\tstrh r2, [r4, 0x3A]\n"
+                    "\tmov r1, r8\n"
+                    "\tmovs r2, 0\n"
+                    "\tldrsh r0, [r1, r2]\n"
+                    "\tstrh r0, [r4, 0x3C]\n"
+                    "\tmovs r5, 0x1\n"
+                    "\tmov r7, r8\n"
+                    "\tmov r6, sp\n"
+                    "_0812805A:\n"
+                    "\tadds r0, r5, 0\n"
+                    "\tmov r1, sp\n"
+                    "\tadds r2, r7, 0\n"
+                    "\tbl MoveCoords\n"
+                    "\tmovs r1, 0\n"
+                    "\tldrsh r0, [r6, r1]\n"
+                    "\tmovs r2, 0\n"
+                    "\tldrsh r1, [r7, r2]\n"
+                    "\tbl MapGridGetZCoordAt\n"
+                    "\tlsls r0, 24\n"
+                    "\tlsrs r0, 24\n"
+                    "\tcmp r0, 0x3\n"
+                    "\tbne _08128080\n"
+                    "\tldrh r0, [r4, 0x38]\n"
+                    "\tadds r0, 0x1\n"
+                    "\tstrh r0, [r4, 0x38]\n"
+                    "\tb _08128094\n"
+                    "_08128080:\n"
+                    "\tadds r0, r5, 0x1\n"
+                    "\tlsls r0, 24\n"
+                    "\tlsrs r5, r0, 24\n"
+                    "\tldrh r0, [r4, 0x3A]\n"
+                    "\tstrh r0, [r6]\n"
+                    "\tldrh r0, [r4, 0x3C]\n"
+                    "\tmov r1, r8\n"
+                    "\tstrh r0, [r1]\n"
+                    "\tcmp r5, 0x4\n"
+                    "\tbls _0812805A\n"
+                    "_08128094:\n"
+                    "\tadd sp, 0x4\n"
+                    "\tpop {r3}\n"
+                    "\tmov r8, r3\n"
+                    "\tpop {r4-r7}\n"
+                    "\tpop {r0}\n"
+                    "\tbx r0");
+}
+#endif
+
+static void sub_81280A0(struct MapObject *mapObject, struct Sprite *linkedSprite, struct Sprite *sprite)
+{
+    u16 unk_8401E5A[ARRAY_COUNT(gUnknown_08401E5A)];
+    u8 v0;
+
+    memcpy(unk_8401E5A, gUnknown_08401E5A, sizeof gUnknown_08401E5A);
+    v0 = sub_8127F5C(sprite);
+    if (v0 != 0)
+    {
+        if (((u16)(++ sprite->data4) & unk_8401E5A[sprite->data5]) == 0)
+        {
+            sprite->pos2.y += sprite->data3;
+        }
+        if ((sprite->data4 & 0x0F) == 0)
+        {
+            sprite->data3 = -sprite->data3;
+        }
+        if (v0 != 2)
+        {
+            if (sub_8127F70(sprite) == 0)
+            {
+                linkedSprite->pos2.y = sprite->pos2.y;
+            }
+            else
+            {
+                linkedSprite->pos2.y = sprite->data1 + sprite->pos2.y;
+            }
+            sprite->pos1.x = linkedSprite->pos1.x;
+            sprite->pos1.y = linkedSprite->pos1.y + 8;
+        }
+    }
+}
+
+u8 sub_8128124(u8 oldSpriteId)
+{
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    spriteId = CreateSpriteAtEnd(&gDummySpriteTemplate, 0, 0, -1);
+    sprite = &gSprites[spriteId];
+    sprite->callback = sub_8128174;
+    sprite->invisible = TRUE;
+    sprite->data0 = oldSpriteId;
+    sprite->data1 = 1;
+    return spriteId;
+}
+
+static void sub_8128174(struct Sprite *sprite)
+{
+    struct Sprite *oldSprite;
+
+    oldSprite = &gSprites[sprite->data0];
+    if (((sprite->data2++) & 0x03) == 0)
+    {
+        oldSprite->pos2.y += sprite->data1;
+    }
+    if ((sprite->data2 & 0x0F) == 0)
+    {
+        sprite->data1 = -sprite->data1;
+    }
+}
+
+u32 FldEff_Dust(void)
+{
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    sub_8060470((s16 *)&gFieldEffectArguments[0], (s16 *)&gFieldEffectArguments[1], 8, 12);
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[9], gFieldEffectArguments[0], gFieldEffectArguments[1], 0);
+    if (spriteId != MAX_SPRITES)
+    {
+        sprite = &gSprites[spriteId];
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->oam.priority = gFieldEffectArguments[3];
+        sprite->data0 = gFieldEffectArguments[2];
+        sprite->data1 = 10;
+    }
+    return 0;
+}
+
+u32 FldEff_SandPile(void)
+{
+    u8 mapObjectId;
+    struct MapObject *mapObject;
+    u8 spriteId;
+    struct Sprite *sprite;
+    const struct MapObjectGraphicsInfo *graphicsInfo;
+
+    mapObjectId = GetFieldObjectIdByLocalIdAndMap(gFieldEffectArguments[0], gFieldEffectArguments[1], gFieldEffectArguments[2]);
+    mapObject = &gMapObjects[mapObjectId];
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[29], 0, 0, 0);
+    if (spriteId != MAX_SPRITES)
+    {
+        graphicsInfo = GetFieldObjectGraphicsInfo(mapObject->graphicsId);
+        sprite = &gSprites[spriteId];
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->oam.priority = gSprites[mapObject->spriteId].oam.priority;
+        sprite->data0 = gFieldEffectArguments[0];
+        sprite->data1 = gFieldEffectArguments[1];
+        sprite->data2 = gFieldEffectArguments[2];
+        sprite->data3 = gSprites[mapObject->spriteId].pos1.x;
+        sprite->data4 = gSprites[mapObject->spriteId].pos1.y;
+        sprite->pos2.y = (graphicsInfo->height >> 1) - 2;
+        SeekSpriteAnim(sprite, 2);
+    }
+    return 0;
+}
+
+void sub_81282E0(struct Sprite *sprite)
+{
+    u8 mapObjectId;
+    s16 x;
+    s16 y;
+
+    if (TryGetFieldObjectIdByLocalIdAndMap(sprite->data0, sprite->data1, sprite->data2, &mapObjectId) || !gMapObjects[mapObjectId].mapobj_bit_20)
+    {
+        FieldEffectStop(sprite, FLDEFF_SAND_PILE);
+    }
+    else
+    {
+        y = gSprites[gMapObjects[mapObjectId].spriteId].pos1.y;
+        x = gSprites[gMapObjects[mapObjectId].spriteId].pos1.x;
+        if (x != sprite->data3 || y != sprite->data4)
+        {
+            sprite->data3 = x;
+            sprite->data4 = y;
+            if (sprite->animEnded)
+            {
+                StartSpriteAnim(sprite, 0);
+            }
+        }
+        sprite->pos1.x = x;
+        sprite->pos1.y = y;
+        sprite->subpriority = gSprites[gMapObjects[mapObjectId].spriteId].subpriority;
+        sub_806487C(sprite, FALSE);
+    }
+}
+
+u32 FldEff_Bubbles(void)
+{
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    sub_8060470((s16 *)&gFieldEffectArguments[0], (s16 *)&gFieldEffectArguments[1], 8, 0);
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[34], gFieldEffectArguments[0], gFieldEffectArguments[1], 0x52);
+    if (spriteId != MAX_SPRITES)
+    {
+        sprite = &gSprites[spriteId];
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->oam.priority = 1;
+    }
+    return 0;
+}
+
+void sub_8128410(struct Sprite *sprite)
+{
+    sprite->data0 += 0x80;
+    sprite->data0 &= 0x100;
+    sprite->pos1.y -= sprite->data0 >> 8;
+    sub_806487C(sprite, FALSE);
+    if (sprite->invisible || sprite->animEnded)
+    {
+        FieldEffectStop(sprite, FLDEFF_BUBBLES);
+    }
+}
+
+u32 FldEff_BerryTreeGrowthSparkle(void)
+{
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    sub_8060470((s16 *)&gFieldEffectArguments[0], (s16 *)&gFieldEffectArguments[1], 8, 4);
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[22], gFieldEffectArguments[0], gFieldEffectArguments[1], gFieldEffectArguments[2]);
+    if (spriteId != MAX_SPRITES)
+    {
+        sprite = &gSprites[spriteId];
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->oam.priority = gFieldEffectArguments[3];
+        sprite->oam.paletteNum = 5;
+        sprite->data0 = FLDEFF_BERRY_TREE_GROWTH_SPARKLE;
+    }
+    return 0;
+}
+
+u32 FldEff_TreeDisguise(void)
+{
+    return ShowDisguiseFieldEffect(FLDEFF_TREE_DISGUISE, 0x18, 0x04);
+}
+
+
+u32 FldEff_MountainDisguise(void)
+{
+    return ShowDisguiseFieldEffect(FLDEFF_MOUNTAIN_DISGUISE, 0x19, 0x03);
+}
+
+
+u32 FldEff_SandDisguise(void)
+{
+    return ShowDisguiseFieldEffect(FLDEFF_SAND_DISGUISE, 0x1C, 0x02);
+}
+
+static u32 ShowDisguiseFieldEffect(u8 fldEff, u8 templateIdx, u8 paletteNum)
+{
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    if (TryGetFieldObjectIdByLocalIdAndMap(gFieldEffectArguments[0], gFieldEffectArguments[1], gFieldEffectArguments[2], &spriteId))
+    {
+        FieldEffectActiveListRemove(fldEff);
+        return MAX_SPRITES;
+    }
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[templateIdx], 0, 0, 0);
+    if (spriteId != MAX_SPRITES)
+    {
+        sprite = &gSprites[spriteId];
+        sprite->coordOffsetEnabled ++;
+        sprite->oam.paletteNum = paletteNum;
+        sprite->data1 = fldEff;
+        sprite->data2 = gFieldEffectArguments[0];
+        sprite->data3 = gFieldEffectArguments[1];
+        sprite->data4 = gFieldEffectArguments[2];
+    }
+    return spriteId;
+}
+
+void sub_81285AC(struct Sprite *sprite)
+{
+    u8 mapObjectId;
+    const struct MapObjectGraphicsInfo *graphicsInfo;
+    struct Sprite *linkedSprite;
+
+    if (TryGetFieldObjectIdByLocalIdAndMap(sprite->data2, sprite->data3, sprite->data4, &mapObjectId))
+    {
+        FieldEffectStop(sprite, sprite->data1);
+    }
+    // else {
+    graphicsInfo = GetFieldObjectGraphicsInfo(gMapObjects[mapObjectId].graphicsId);
+    linkedSprite = &gSprites[gMapObjects[mapObjectId].spriteId];
+    sprite->invisible = linkedSprite->invisible;
+    sprite->pos1.x = linkedSprite->pos1.x;
+    sprite->pos1.y = (graphicsInfo->height >> 1) + linkedSprite->pos1.y - 16;
+    sprite->subpriority = linkedSprite->subpriority - 1;
+    if (sprite->data0 == 1)
+    {
+        sprite->data0 ++;
+        StartSpriteAnim(sprite, 1);
+    }
+    if (sprite->data0 == 2 && sprite->animEnded)
+    {
+        sprite->data7 = 1;
+    }
+    if (sprite->data0 == 3)
+    {
+        FieldEffectStop(sprite, sprite->data1);
+    }
+    // }
+}
+
+void sub_812869C(struct MapObject *mapObject)
+{
+    if (mapObject->mapobj_unk_21 == 1)
+    {
+        gSprites[mapObject->mapobj_unk_1A].data0 ++;
+    }
+}
+
+bool8 sub_81286C4(struct MapObject *mapObject)
+{
+    struct Sprite *sprite;
+
+    if (mapObject->mapobj_unk_21 == 2)
+    {
+        return TRUE;
+    }
+    if (mapObject->mapobj_unk_21 == 0)
+    {
+        return TRUE;
+    }
+    sprite = &gSprites[mapObject->mapobj_unk_1A];
+    if (sprite->data7)
+    {
+        mapObject->mapobj_unk_21 = 2;
+        sprite->data0 ++;
+        return TRUE;
+    }
+    return FALSE;
+}
+
+u32 FldEff_Sparkle(void)
+{
+    u8 spriteId;
+
+    gFieldEffectArguments[0] += 7;
+    gFieldEffectArguments[1] += 7;
+    sub_8060470((s16 *)&gFieldEffectArguments[0], (s16 *)&gFieldEffectArguments[1], 8, 8);
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[35], gFieldEffectArguments[0], gFieldEffectArguments[1], 0x52);
+    if (spriteId != MAX_SPRITES)
+    {
+        gSprites[spriteId].oam.priority = gFieldEffectArguments[2];
+        gSprites[spriteId].coordOffsetEnabled = TRUE;
+    }
+    return 0;
+}
+
+void sub_8128774(struct Sprite *sprite)
+{
+    if (sprite->data0 == 0)
+    {
+        if (sprite->animEnded)
+        {
+            sprite->invisible = TRUE;
+            sprite->data0 ++;
+        }
+        if (sprite->data0 == 0)
+        {
+            return;
+        }
+    }
+    if (++ sprite->data1 >= 35)
+    {
+        FieldEffectStop(sprite, FLDEFF_SPARKLE);
+    }
+}
+
+void sub_81287C4(struct Sprite *sprite)
+{
+    if (sprite->animEnded)
+    {
+        FieldEffectStop(sprite, sprite->data1);
+    }
+    else
+    {
+        sub_806487C(sprite, FALSE);
+        SetObjectSubpriorityByZCoord(sprite->data0, sprite, 0);
+    }
+}
+
+void sub_8128800(struct Sprite *sprite)
+{
+    if (sprite->animEnded)
+    {
+        FieldEffectStop(sprite, sprite->data0);
+    }
+    else
+    {
+        sub_806487C(sprite, FALSE);
+    }
+}
+
+#ifdef NONMATCHING
+static void sub_812882C(struct Sprite *sprite /*r6*/, u8 z, u8 offset)
+{
+    u8 i;
+    s16 xlo;
+    s16 xhi;
+    s16 lx;
+    s16 lyhi;
+    s16 ly;
+    s16 ylo;
+    s16 yhi;
+    struct MapObject *mapObject; // r4
+    const struct MapObjectGraphicsInfo *graphicsInfo; // destroyed
+    struct Sprite *linkedSprite; // r5
+
+    SetObjectSubpriorityByZCoord(z, sprite, offset);
+    for (i = 0; i < 16; i ++)
+    {
+        mapObject = &gMapObjects[i];
+        if (mapObject->active)
+        {
+            graphicsInfo = GetFieldObjectGraphicsInfo(mapObject->graphicsId);
+            linkedSprite = &gSprites[mapObject->spriteId];
+            xhi = sprite->pos1.x + sprite->centerToCornerVecX;
+            xlo = sprite->pos1.x - sprite->centerToCornerVecX;
+            lx = linkedSprite->pos1.x;
+            if (xhi < lx && xlo > lx)
+            {
+                lyhi = linkedSprite->pos1.y + linkedSprite->centerToCornerVecY;
+                ly = linkedSprite->pos1.y;
+                ylo = sprite->pos1.y - sprite->centerToCornerVecY;
+                yhi = ylo + linkedSprite->centerToCornerVecY;
+                if ((lyhi < yhi || lyhi < ylo) && ly > yhi)
+                {
+                    if (sprite->subpriority <= linkedSprite->subpriority)
+                    {
+                        sprite->subpriority = linkedSprite->subpriority + 2;
+                        break;
+                    }
+                }
+            }
+        }
+    }
+}
+#else
+__attribute__((naked)) static void sub_812882C(struct Sprite *sprite /*r6*/, u8 z, u8 offset)
+{
+    asm_unified("\tpush {r4-r7,lr}\n"
+                    "\tadds r6, r0, 0\n"
+                    "\tadds r0, r1, 0\n"
+                    "\tlsls r0, 24\n"
+                    "\tlsrs r0, 24\n"
+                    "\tlsls r2, 24\n"
+                    "\tlsrs r2, 24\n"
+                    "\tadds r1, r6, 0\n"
+                    "\tbl SetObjectSubpriorityByZCoord\n"
+                    "\tmovs r7, 0\n"
+                    "_08128842:\n"
+                    "\tlsls r0, r7, 3\n"
+                    "\tadds r0, r7\n"
+                    "\tlsls r0, 2\n"
+                    "\tldr r1, _081288DC @ =gMapObjects\n"
+                    "\tadds r4, r0, r1\n"
+                    "\tldrb r0, [r4]\n"
+                    "\tlsls r0, 31\n"
+                    "\tcmp r0, 0\n"
+                    "\tbeq _081288E4\n"
+                    "\tldrb r0, [r4, 0x5]\n"
+                    "\tbl GetFieldObjectGraphicsInfo\n"
+                    "\tldrb r1, [r4, 0x4]\n"
+                    "\tlsls r0, r1, 4\n"
+                    "\tadds r0, r1\n"
+                    "\tlsls r0, 2\n"
+                    "\tldr r1, _081288E0 @ =gSprites\n"
+                    "\tadds r5, r0, r1\n"
+                    "\tadds r0, r6, 0\n"
+                    "\tadds r0, 0x28\n"
+                    "\tmovs r2, 0\n"
+                    "\tldrsb r2, [r0, r2]\n"
+                    "\tldrh r0, [r6, 0x20]\n"
+                    "\tadds r1, r0, r2\n"
+                    "\tsubs r0, r2\n"
+                    "\tlsls r0, 16\n"
+                    "\tlsrs r4, r0, 16\n"
+                    "\tlsls r1, 16\n"
+                    "\tasrs r1, 16\n"
+                    "\tmovs r0, 0x20\n"
+                    "\tldrsh r2, [r5, r0]\n"
+                    "\tcmp r1, r2\n"
+                    "\tbge _081288E4\n"
+                    "\tlsls r0, r4, 16\n"
+                    "\tasrs r0, 16\n"
+                    "\tcmp r0, r2\n"
+                    "\tble _081288E4\n"
+                    "\tadds r0, r5, 0\n"
+                    "\tadds r0, 0x29\n"
+                    "\tmovs r3, 0\n"
+                    "\tldrsb r3, [r0, r3]\n"
+                    "\tldrh r2, [r5, 0x22]\n"
+                    "\tadds r2, r3\n"
+                    "\tldrh r4, [r5, 0x22]\n"
+                    "\tadds r0, r6, 0\n"
+                    "\tadds r0, 0x29\n"
+                    "\tmovs r1, 0\n"
+                    "\tldrsb r1, [r0, r1]\n"
+                    "\tldrh r0, [r6, 0x22]\n"
+                    "\tsubs r0, r1\n"
+                    "\tlsls r0, 16\n"
+                    "\tasrs r0, 16\n"
+                    "\tadds r3, r0, r3\n"
+                    "\tlsls r2, 16\n"
+                    "\tasrs r2, 16\n"
+                    "\tlsls r3, 16\n"
+                    "\tasrs r3, 16\n"
+                    "\tcmp r2, r3\n"
+                    "\tblt _081288BC\n"
+                    "\tcmp r2, r0\n"
+                    "\tbge _081288E4\n"
+                    "_081288BC:\n"
+                    "\tlsls r0, r4, 16\n"
+                    "\tasrs r0, 16\n"
+                    "\tcmp r0, r3\n"
+                    "\tble _081288E4\n"
+                    "\tadds r2, r6, 0\n"
+                    "\tadds r2, 0x43\n"
+                    "\tadds r0, r5, 0\n"
+                    "\tadds r0, 0x43\n"
+                    "\tldrb r1, [r0]\n"
+                    "\tldrb r0, [r2]\n"
+                    "\tcmp r0, r1\n"
+                    "\tbhi _081288E4\n"
+                    "\tadds r0, r1, 0x2\n"
+                    "\tstrb r0, [r2]\n"
+                    "\tb _081288EE\n"
+                    "\t.align 2, 0\n"
+                    "_081288DC: .4byte gMapObjects\n"
+                    "_081288E0: .4byte gSprites\n"
+                    "_081288E4:\n"
+                    "\tadds r0, r7, 0x1\n"
+                    "\tlsls r0, 24\n"
+                    "\tlsrs r7, r0, 24\n"
+                    "\tcmp r7, 0xF\n"
+                    "\tbls _08128842\n"
+                    "_081288EE:\n"
+                    "\tpop {r4-r7}\n"
+                    "\tpop {r0}\n"
+                    "\tbx r0");
+}
+#endif
diff --git a/src/field_ground_effect.c b/src/field_ground_effect.c
index 2a398ba22..5af8ea3e3 100644
--- a/src/field_ground_effect.c
+++ b/src/field_ground_effect.c
@@ -472,7 +472,7 @@ void GroundEffect_SpawnOnTallGrass(struct MapObject *mapObj, struct Sprite *spri
                          | (u8)gSaveBlock1.location.mapGroup;
 
     gFieldEffectArguments[7] = 1;
-    FieldEffectStart(4);
+    FieldEffectStart(FLDEFF_TALL_GRASS);
 }
 
 void sub_8063E94(struct MapObject *mapObj, struct Sprite *sprite)
@@ -491,7 +491,7 @@ void sub_8063E94(struct MapObject *mapObj, struct Sprite *sprite)
                          | (u8)gSaveBlock1.location.mapGroup;
 
     gFieldEffectArguments[7] = 0;
-    FieldEffectStart(4);
+    FieldEffectStart(FLDEFF_TALL_GRASS);
 }
 
 void sub_8063EE0(struct MapObject *mapObj, struct Sprite *sprite)
@@ -510,7 +510,7 @@ void sub_8063EE0(struct MapObject *mapObj, struct Sprite *sprite)
                          | (u8)gSaveBlock1.location.mapGroup;
 
     gFieldEffectArguments[7] = 1;
-    FieldEffectStart(17);
+    FieldEffectStart(FLDEFF_LONG_GRASS);
 }
 
 void sub_8063F2C(struct MapObject *mapObj, struct Sprite *sprite)
@@ -529,7 +529,7 @@ void sub_8063F2C(struct MapObject *mapObj, struct Sprite *sprite)
                          | (u8)gSaveBlock1.location.mapGroup;
 
     gFieldEffectArguments[7] = 0;
-    FieldEffectStart(17);
+    FieldEffectStart(FLDEFF_LONG_GRASS);
 }
 
 void GroundEffect_WaterReflection(struct MapObject *mapObj, struct Sprite *sprite)
@@ -570,7 +570,10 @@ static void nullsub(struct MapObject *mapObj, struct Sprite *sprite, u8 a)
 static void DoTracksGroundEffect_Footprints(struct MapObject *mapObj, struct Sprite *sprite, u8 a)
 {
     // First half-word is a Field Effect script id. (gFieldEffectScriptPointers)
-    u16 sandFootprints_FieldEffectData[2] = { 0xD, 0x18 };
+    u16 sandFootprints_FieldEffectData[2] = {
+            FLDEFF_SAND_FOOTPRINTS,
+            FLDEFF_DEEP_SAND_FOOTPRINTS
+    };
 
     gFieldEffectArguments[0] = mapObj->coords3.x;
     gFieldEffectArguments[1] = mapObj->coords3.y;
diff --git a/src/field_map_obj.c b/src/field_map_obj.c
index 0e7cd7896..551964d72 100644
--- a/src/field_map_obj.c
+++ b/src/field_map_obj.c
@@ -1901,7 +1901,7 @@ extern void CameraObjectReset1(void);
 
 extern struct LinkPlayerMapObject gLinkPlayerMapObjects[];
 extern u8 gReservedSpritePaletteCount;
-extern struct Camera gUnknown_0202E844;
+extern struct Camera gCamera;
 
 static u8 gUnknown_030005A4;
 static u16 gUnknown_030005A6;
@@ -2986,24 +2986,21 @@ void UpdateFieldObjectCoordsForCameraUpdate(void)
     s16 deltaX;
     s16 deltaY;
 
-#ifndef NONMATCHING
-    asm(""::"r"(i));  //makes the compiler store i in r3
-#endif
-
-    if (gUnknown_0202E844.field_0)
+    if (gCamera.field_0)
     {
-        for (i = 0, deltaX = gUnknown_0202E844.x, deltaY = gUnknown_0202E844.y; i < 16; i++)
+        deltaX = gCamera.x;
+        deltaY = gCamera.y;
+        for (i = 0; i < 16; i++)
         {
-            struct MapObject *mapObject = &gMapObjects[i];
 
-            if (mapObject->active)
+            if (gMapObjects[i].active)
             {
-                mapObject->coords1.x -= deltaX;
-                mapObject->coords1.y -= deltaY;
-                mapObject->coords2.x -= deltaX;
-                mapObject->coords2.y -= deltaY;
-                mapObject->coords3.x -= deltaX;
-                mapObject->coords3.y -= deltaY;
+                gMapObjects[i].coords1.x -= deltaX;
+                gMapObjects[i].coords1.y -= deltaY;
+                gMapObjects[i].coords2.x -= deltaX;
+                gMapObjects[i].coords2.y -= deltaY;
+                gMapObjects[i].coords3.x -= deltaX;
+                gMapObjects[i].coords3.y -= deltaY;
             }
         }
     }
diff --git a/src/field_map_obj_helpers.c b/src/field_map_obj_helpers.c
index 93cd57557..b453d3794 100644
--- a/src/field_map_obj_helpers.c
+++ b/src/field_map_obj_helpers.c
@@ -303,7 +303,7 @@ void DoShadowFieldEffect(struct MapObject *mapObject)
     if (!mapObject->mapobj_bit_22)
     {
         mapObject->mapobj_bit_22 = 1;
-        oe_exec_and_other_stuff(3, mapObject);
+        oe_exec_and_other_stuff(FLDEFF_SHADOW, mapObject);
     }
 }
 
diff --git a/src/field_tasks.c b/src/field_tasks.c
index 68ceb67bc..da6f162c2 100644
--- a/src/field_tasks.c
+++ b/src/field_tasks.c
@@ -845,11 +845,11 @@ void Task_MuddySlope(u8 taskId)
             }
             break;
     }
-    if (gUnknown_0202E844.field_0 && mapIndices != data[0])
+    if (gCamera.field_0 && mapIndices != data[0])
     {
         data[0] = mapIndices;
-        x2 = gUnknown_0202E844.x;
-        y2 = gUnknown_0202E844.y;
+        x2 = gCamera.x;
+        y2 = gCamera.y;
     }
     else
     {
diff --git a/src/fieldmap.c b/src/fieldmap.c
index 3ad190a4b..7a31ae720 100644
--- a/src/fieldmap.c
+++ b/src/fieldmap.c
@@ -22,7 +22,7 @@ struct Coords32
 
 EWRAM_DATA static u16 gUnknown_02029828[0x2800] = {0};
 EWRAM_DATA struct MapHeader gMapHeader = {0};
-EWRAM_DATA struct Camera gUnknown_0202E844 = {0};
+EWRAM_DATA struct Camera gCamera = {0};
 EWRAM_DATA static struct ConnectionFlags gUnknown_0202E850 = {0};
 
 struct BackupMapData gUnknown_03004870;
@@ -713,7 +713,7 @@ bool8 CameraMove(int x, int y)
     unsigned int direction;
     struct MapConnection *connection;
     int old_x, old_y;
-    gUnknown_0202E844.field_0 = FALSE;
+    gCamera.field_0 = FALSE;
     direction = GetPostCameraMoveMapBorderId(x, y);
     if (direction + 1 <= 1)
     {
@@ -728,14 +728,14 @@ bool8 CameraMove(int x, int y)
         connection = sub_8056A64(direction, gSaveBlock1.pos.x, gSaveBlock1.pos.y);
         sub_8056918(connection, direction, x, y);
         sub_80538F0(connection->mapGroup, connection->mapNum);
-        gUnknown_0202E844.field_0 = TRUE;
-        gUnknown_0202E844.x = old_x - gSaveBlock1.pos.x;
-        gUnknown_0202E844.y = old_y - gSaveBlock1.pos.y;
+        gCamera.field_0 = TRUE;
+        gCamera.x = old_x - gSaveBlock1.pos.x;
+        gCamera.y = old_y - gSaveBlock1.pos.y;
         gSaveBlock1.pos.x += x;
         gSaveBlock1.pos.y += y;
         sub_80566F0(direction);
     }
-    return gUnknown_0202E844.field_0;
+    return gCamera.field_0;
 }
 
 struct MapConnection *sub_8056A64(u8 direction, int x, int y)