FldEff_JumpTallGrass; gUnknown_0202FF84 -> gFieldEffectSpawnParams

17 files changed, 208 insertions, 190 deletions

diff --git a/src/battle_transition.c b/src/battle_transition.c
index 1cacb8857..fd6eab491 100644
--- a/src/battle_transition.c
+++ b/src/battle_transition.c
@@ -994,10 +994,10 @@ static bool8 Phase2_Transition_PokeballsTrail_Func2(struct Task* task)
     rand = Random() & 1;
     for (i = 0; i <= 4; i++, rand ^= 1)
     {
-        gUnknown_0202FF84[0] = arr0[rand];      // x
-        gUnknown_0202FF84[1] = (i * 32) + 16;   // y
-        gUnknown_0202FF84[2] = rand;
-        gUnknown_0202FF84[3] = arr1[i];
+        gFieldEffectSpawnParams[0] = arr0[rand];      // x
+        gFieldEffectSpawnParams[1] = (i * 32) + 16;   // y
+        gFieldEffectSpawnParams[2] = rand;
+        gFieldEffectSpawnParams[3] = arr1[i];
         FieldEffectStart(FLDEFF_POKEBALL);
     }
 
@@ -1017,14 +1017,14 @@ static bool8 Phase2_Transition_PokeballsTrail_Func3(struct Task* task)
 
 bool8 FldEff_Pokeball(void)
 {
-    u8 spriteID = CreateSpriteAtEnd(&sSpriteTemplate_83FD98C, gUnknown_0202FF84[0], gUnknown_0202FF84[1], 0);
+    u8 spriteID = CreateSpriteAtEnd(&sSpriteTemplate_83FD98C, gFieldEffectSpawnParams[0], gFieldEffectSpawnParams[1], 0);
     gSprites[spriteID].oam.priority = 0;
     gSprites[spriteID].oam.affineMode = 1;
-    gSprites[spriteID].data0 = gUnknown_0202FF84[2];
-    gSprites[spriteID].data1 = gUnknown_0202FF84[3];
+    gSprites[spriteID].data0 = gFieldEffectSpawnParams[2];
+    gSprites[spriteID].data1 = gFieldEffectSpawnParams[3];
     gSprites[spriteID].data2 = -1;
     InitSpriteAffineAnim(&gSprites[spriteID]);
-    StartSpriteAffineAnim(&gSprites[spriteID], gUnknown_0202FF84[2]);
+    StartSpriteAffineAnim(&gSprites[spriteID], gFieldEffectSpawnParams[2]);
     return FALSE;
 }
 
diff --git a/src/braille_puzzles.c b/src/braille_puzzles.c
index b8d7cd386..f6bd9e056 100644
--- a/src/braille_puzzles.c
+++ b/src/braille_puzzles.c
@@ -105,7 +105,7 @@ bool8 ShouldDoBrailleFlyEffect(void)
 
 void DoBrailleFlyEffect(void)
 {
-    gUnknown_0202FF84[0] = gLastFieldPokeMenuOpened;
+    gFieldEffectSpawnParams[0] = gLastFieldPokeMenuOpened;
     FieldEffectStart(0x3C);
 }
 
diff --git a/src/field_effect.c b/src/field_effect.c
index cffed2614..164c74657 100644
--- a/src/field_effect.c
+++ b/src/field_effect.c
@@ -28,7 +28,7 @@
 
 #define subsprite_table(ptr) {.subsprites = ptr, .subspriteCount = (sizeof ptr) / (sizeof(struct Subsprite))}
 
-EWRAM_DATA u32 gUnknown_0202FF84[8] = {0};
+EWRAM_DATA u32 gFieldEffectSpawnParams[8] = {0};
 
 const u32 gSpriteImage_839DC14[] = INCBIN_U32("graphics/birch_speech/birch.4bpp");
 const u16 gBirchPalette[16] = INCBIN_U16("graphics/birch_speech/birch.gbapal");
@@ -1203,10 +1203,10 @@ void task00_8084310(u8 taskId)
         {
             return;
         }
-        gUnknown_0202FF84[0] = gLastFieldPokeMenuOpened;
-        if ((int)gUnknown_0202FF84[0] > 5)
+        gFieldEffectSpawnParams[0] = gLastFieldPokeMenuOpened;
+        if ((int)gFieldEffectSpawnParams[0] > 5)
         {
-            gUnknown_0202FF84[0] = 0;
+            gFieldEffectSpawnParams[0] = 0;
         }
         FieldEffectStart(FLDEFF_USE_FLY);
         task->data[0]++;
@@ -1665,7 +1665,7 @@ bool8 FldEff_UseWaterfall(void)
 {
     u8 taskId;
     taskId = CreateTask(sub_8086F64, 0xff);
-    gTasks[taskId].data[1] = gUnknown_0202FF84[0];
+    gTasks[taskId].data[1] = gFieldEffectSpawnParams[0];
     sub_8086F64(taskId);
     return FALSE;
 }
@@ -1689,7 +1689,7 @@ bool8 waterfall_1_do_anim_probably(struct Task *task, struct MapObject *mapObjec
     if (!FieldObjectIsSpecialAnimOrDirectionSequenceAnimActive(mapObject))
     {
         FieldObjectClearAnimIfSpecialAnimFinished(mapObject);
-        gUnknown_0202FF84[0] = task->data[1];
+        gFieldEffectSpawnParams[0] = task->data[1];
         FieldEffectStart(FLDEFF_FIELD_MOVE_SHOW_MON_INIT);
         task->data[0]++;
     }
@@ -1738,8 +1738,8 @@ bool8 FldEff_UseDive(void)
 {
     u8 taskId;
     taskId = CreateTask(Task_Dive, 0xff);
-    gTasks[taskId].data[15] = gUnknown_0202FF84[0];
-    gTasks[taskId].data[14] = gUnknown_0202FF84[1];
+    gTasks[taskId].data[15] = gFieldEffectSpawnParams[0];
+    gTasks[taskId].data[14] = gFieldEffectSpawnParams[1];
     Task_Dive(taskId);
     return FALSE;
 }
@@ -1759,7 +1759,7 @@ bool8 sub_8087124(struct Task *task)
 bool8 dive_2_unknown(struct Task *task)
 {
     ScriptContext2_Enable();
-    gUnknown_0202FF84[0] = task->data[15];
+    gFieldEffectSpawnParams[0] = task->data[15];
     FieldEffectStart(FLDEFF_FIELD_MOVE_SHOW_MON_INIT);
     task->data[0]++;
     return FALSE;
@@ -1820,10 +1820,10 @@ bool8 sub_8087298(struct Task *task, struct MapObject *mapObject, struct Sprite
 {
     sprite->pos2.y = 0;
     task->data[3] = 1;
-    gUnknown_0202FF84[0] = mapObject->coords2.x;
-    gUnknown_0202FF84[1] = mapObject->coords2.y;
-    gUnknown_0202FF84[2] = sprite->subpriority - 1;
-    gUnknown_0202FF84[3] = sprite->oam.priority;
+    gFieldEffectSpawnParams[0] = mapObject->coords2.x;
+    gFieldEffectSpawnParams[1] = mapObject->coords2.y;
+    gFieldEffectSpawnParams[2] = sprite->subpriority - 1;
+    gFieldEffectSpawnParams[3] = sprite->oam.priority;
     FieldEffectStart(FLDEFF_LAVARIDGE_GYM_WARP);
     PlaySE(SE_W153);
     task->data[0]++;
@@ -1924,10 +1924,10 @@ bool8 sub_80874FC(struct Task *task, struct MapObject *mapObject, struct Sprite
 {
     if (sub_807D770())
     {
-        gUnknown_0202FF84[0] = mapObject->coords2.x;
-        gUnknown_0202FF84[1] = mapObject->coords2.y;
-        gUnknown_0202FF84[2] = sprite->subpriority - 1;
-        gUnknown_0202FF84[3] = sprite->oam.priority;
+        gFieldEffectSpawnParams[0] = mapObject->coords2.x;
+        gFieldEffectSpawnParams[1] = mapObject->coords2.y;
+        gFieldEffectSpawnParams[2] = sprite->subpriority - 1;
+        gFieldEffectSpawnParams[3] = sprite->oam.priority;
         task->data[1] = FieldEffectStart(FLDEFF_POP_OUT_OF_ASH);
         task->data[0]++;
     }
@@ -1966,9 +1966,9 @@ extern const struct SpriteTemplate *const gFieldEffectObjectTemplatePointers[36]
 u8 FldEff_LavaridgeGymWarp(void)
 {
     u8 spriteId;
-    sub_8060470((s16 *)&gUnknown_0202FF84[0], (s16 *)&gUnknown_0202FF84[1], 8, 8);
-    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[33], gUnknown_0202FF84[0], gUnknown_0202FF84[1], gUnknown_0202FF84[2]);
-    gSprites[spriteId].oam.priority = gUnknown_0202FF84[3];
+    sub_8060470((s16 *)&gFieldEffectSpawnParams[0], (s16 *)&gFieldEffectSpawnParams[1], 8, 8);
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[33], gFieldEffectSpawnParams[0], gFieldEffectSpawnParams[1], gFieldEffectSpawnParams[2]);
+    gSprites[spriteId].oam.priority = gFieldEffectSpawnParams[3];
     gSprites[spriteId].coordOffsetEnabled = 1;
     return spriteId;
 }
@@ -2009,10 +2009,10 @@ bool8 sub_80876F8(struct Task *task, struct MapObject *mapObject, struct Sprite
     {
         if (task->data[1] > 3)
         {
-            gUnknown_0202FF84[0] = mapObject->coords2.x;
-            gUnknown_0202FF84[1] = mapObject->coords2.y;
-            gUnknown_0202FF84[2] = sprite->subpriority - 1;
-            gUnknown_0202FF84[3] = sprite->oam.priority;
+            gFieldEffectSpawnParams[0] = mapObject->coords2.x;
+            gFieldEffectSpawnParams[1] = mapObject->coords2.y;
+            gFieldEffectSpawnParams[2] = sprite->subpriority - 1;
+            gFieldEffectSpawnParams[3] = sprite->oam.priority;
             task->data[1] = FieldEffectStart(FLDEFF_POP_OUT_OF_ASH);
             task->data[0]++;
         } else
@@ -2064,9 +2064,9 @@ bool8 sub_80877D4(struct Task *task, struct MapObject *mapObject, struct Sprite
 u8 FldEff_PopOutOfAsh(void)
 {
     u8 spriteId;
-    sub_8060470((s16 *)&gUnknown_0202FF84[0], (s16 *)&gUnknown_0202FF84[1], 8, 8);
-    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[32], gUnknown_0202FF84[0], gUnknown_0202FF84[1], gUnknown_0202FF84[2]);
-    gSprites[spriteId].oam.priority = gUnknown_0202FF84[3];
+    sub_8060470((s16 *)&gFieldEffectSpawnParams[0], (s16 *)&gFieldEffectSpawnParams[1], 8, 8);
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[32], gFieldEffectSpawnParams[0], gFieldEffectSpawnParams[1], gFieldEffectSpawnParams[2]);
+    gSprites[spriteId].oam.priority = gFieldEffectSpawnParams[3];
     gSprites[spriteId].coordOffsetEnabled = 1;
     return spriteId;
 }
@@ -2392,19 +2392,19 @@ bool8 FldEff_FieldMoveShowMon(void)
     {
         taskId = CreateTask(sub_808847C, 0xff);
     }
-    gTasks[taskId].data[15] = sub_8088830(gUnknown_0202FF84[0], gUnknown_0202FF84[1], gUnknown_0202FF84[2]);
+    gTasks[taskId].data[15] = sub_8088830(gFieldEffectSpawnParams[0], gFieldEffectSpawnParams[1], gFieldEffectSpawnParams[2]);
     return FALSE;
 }
 
 bool8 FldEff_FieldMoveShowMonInit(void)
 {
     struct Pokemon *pokemon;
-    u32 flag = gUnknown_0202FF84[0] & 0x80000000;
-    pokemon = &gPlayerParty[(u8)gUnknown_0202FF84[0]];
-    gUnknown_0202FF84[0] = GetMonData(pokemon, MON_DATA_SPECIES);
-    gUnknown_0202FF84[1] = GetMonData(pokemon, MON_DATA_OT_ID);
-    gUnknown_0202FF84[2] = GetMonData(pokemon, MON_DATA_PERSONALITY);
-    gUnknown_0202FF84[0] |= flag;
+    u32 flag = gFieldEffectSpawnParams[0] & 0x80000000;
+    pokemon = &gPlayerParty[(u8)gFieldEffectSpawnParams[0]];
+    gFieldEffectSpawnParams[0] = GetMonData(pokemon, MON_DATA_SPECIES);
+    gFieldEffectSpawnParams[1] = GetMonData(pokemon, MON_DATA_OT_ID);
+    gFieldEffectSpawnParams[2] = GetMonData(pokemon, MON_DATA_PERSONALITY);
+    gFieldEffectSpawnParams[0] |= flag;
     FieldEffectStart(FLDEFF_FIELD_MOVE_SHOW_MON);
     FieldEffectActiveListRemove(FLDEFF_FIELD_MOVE_SHOW_MON_INIT);
     return FALSE;
@@ -2879,7 +2879,7 @@ u8 FldEff_UseSurf(void)
 {
     u8 taskId;
     taskId = CreateTask(sub_8088954, 0xff);
-    gTasks[taskId].data[15] = gUnknown_0202FF84[0];
+    gTasks[taskId].data[15] = gFieldEffectSpawnParams[0];
     sav1_reset_battle_music_maybe();
     sub_8053FB0(0x016d);
     return FALSE;
@@ -2919,7 +2919,7 @@ void sub_8088A30(struct Task *task)
     mapObject = &gMapObjects[gPlayerAvatar.mapObjectId];
     if (FieldObjectCheckIfSpecialAnimFinishedOrInactive(mapObject))
     {
-        gUnknown_0202FF84[0] = task->data[15] | 0x80000000;
+        gFieldEffectSpawnParams[0] = task->data[15] | 0x80000000;
         FieldEffectStart(FLDEFF_FIELD_MOVE_SHOW_MON_INIT);
         task->data[0]++;
     }
@@ -2934,9 +2934,9 @@ void sub_8088A78(struct Task *task)
         sub_805B980(mapObject, GetPlayerAvatarGraphicsIdByStateId(3));
         FieldObjectClearAnimIfSpecialAnimFinished(mapObject);
         FieldObjectSetSpecialAnim(mapObject, sub_80608D0(mapObject->placeholder18));
-        gUnknown_0202FF84[0] = task->data[1];
-        gUnknown_0202FF84[1] = task->data[2];
-        gUnknown_0202FF84[2] = gPlayerAvatar.mapObjectId;
+        gFieldEffectSpawnParams[0] = task->data[1];
+        gFieldEffectSpawnParams[1] = task->data[2];
+        gFieldEffectSpawnParams[2] = gPlayerAvatar.mapObjectId;
         mapObject->mapobj_unk_1A = FieldEffectStart(FLDEFF_SURF_BLOB);
         task->data[0]++;
     }
@@ -2970,7 +2970,7 @@ u8 FldEff_NPCFlyOut(void)
     sprite->oam.paletteNum = 0;
     sprite->oam.priority = 1;
     sprite->callback = sub_8088BC4;
-    sprite->data1 = gUnknown_0202FF84[0];
+    sprite->data1 = gFieldEffectSpawnParams[0];
     PlaySE(SE_W019);
     return spriteId;
 }
@@ -3009,7 +3009,7 @@ u8 FldEff_UseFly(void)
 {
     u8 taskId;
     taskId = CreateTask(sub_8088C70, 0xfe);
-    gTasks[taskId].data[1] = gUnknown_0202FF84[0];
+    gTasks[taskId].data[1] = gFieldEffectSpawnParams[0];
     return 0;
 }
 
@@ -3040,7 +3040,7 @@ void sub_8088CF8(struct Task *task)
     if (FieldObjectClearAnimIfSpecialAnimFinished(mapObject))
     {
         task->data[0]++;
-        gUnknown_0202FF84[0] = task->data[1];
+        gFieldEffectSpawnParams[0] = task->data[1];
         FieldEffectStart(FLDEFF_FIELD_MOVE_SHOW_MON_INIT);
     }
 }
diff --git a/src/field_effect_helpers.c b/src/field_effect_helpers.c
index 5a71559ba..d0b659131 100644
--- a/src/field_effect_helpers.c
+++ b/src/field_effect_helpers.c
@@ -249,15 +249,15 @@ bool8 FldEff_Shadow(void)
     const struct MapObjectGraphicsInfo *graphicsInfo;
     u8 spriteId;
 
-    mapObjectId = GetFieldObjectIdByLocalIdAndMap(gUnknown_0202FF84[0], gUnknown_0202FF84[1], gUnknown_0202FF84[2]);
+    mapObjectId = GetFieldObjectIdByLocalIdAndMap(gFieldEffectSpawnParams[0], gFieldEffectSpawnParams[1], gFieldEffectSpawnParams[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 = gUnknown_0202FF84[0];
-        gSprites[spriteId].data1 = gUnknown_0202FF84[1];
-        gSprites[spriteId].data2 = gUnknown_0202FF84[2];
+        gSprites[spriteId].data0 = gFieldEffectSpawnParams[0];
+        gSprites[spriteId].data1 = gFieldEffectSpawnParams[1];
+        gSprites[spriteId].data2 = gFieldEffectSpawnParams[2];
         gSprites[spriteId].data3 = (graphicsInfo->height >> 1) - gUnknown_08401E36[graphicsInfo->shadowSize];
     }
     return FALSE;
@@ -294,22 +294,22 @@ bool8 FldEff_TallGrass(void)
     u8 spriteId;
     struct Sprite *sprite;
 
-    x = gUnknown_0202FF84[0];
-    y = gUnknown_0202FF84[1];
+    x = gFieldEffectSpawnParams[0];
+    y = gFieldEffectSpawnParams[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 = gUnknown_0202FF84[3];
-        sprite->data0 = gUnknown_0202FF84[2];
-        sprite->data1 = gUnknown_0202FF84[0];
-        sprite->data2 = gUnknown_0202FF84[1];
-        sprite->data3 = gUnknown_0202FF84[4];
-        sprite->data4 = gUnknown_0202FF84[5];
-        sprite->data5 = gUnknown_0202FF84[6];
-        if (gUnknown_0202FF84[7])
+        sprite->oam.priority = gFieldEffectSpawnParams[3];
+        sprite->data0 = gFieldEffectSpawnParams[2];
+        sprite->data1 = gFieldEffectSpawnParams[0];
+        sprite->data2 = gFieldEffectSpawnParams[1];
+        sprite->data3 = gFieldEffectSpawnParams[4];
+        sprite->data4 = gFieldEffectSpawnParams[5];
+        sprite->data5 = gFieldEffectSpawnParams[6];
+        if (gFieldEffectSpawnParams[7])
         {
             SeekSpriteAnim(sprite, 4);
         }
@@ -358,3 +358,21 @@ void unc_grass_normal(struct Sprite *sprite)
         sub_812882C(sprite, sprite->data0, metatileBehavior);
     }
 }
+
+bool8 FldEff_JumpTallGrass(void)
+{
+    u8 spriteId;
+    struct Sprite *sprite;
+
+    sub_8060470((s16 *)&gFieldEffectSpawnParams[0], (s16 *)&gFieldEffectSpawnParams[1], 8, 12);
+    spriteId = CreateSpriteAtEnd(gFieldEffectObjectTemplatePointers[10], gFieldEffectSpawnParams[0], gFieldEffectSpawnParams[1], 0);
+    if (spriteId != MAX_SPRITES)
+    {
+        sprite = &gSprites[spriteId];
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->oam.priority = gFieldEffectSpawnParams[3];
+        sprite->data0 = gFieldEffectSpawnParams[2];
+        sprite->data1 = 12;
+    }
+    return FALSE;
+}
diff --git a/src/field_ground_effect.c b/src/field_ground_effect.c
index b9935463b..e50811a78 100644
--- a/src/field_ground_effect.c
+++ b/src/field_ground_effect.c
@@ -460,18 +460,18 @@ void GroundEffect_SpawnOnTallGrass(struct MapObject *mapObj, struct Sprite *spri
 {
     u8 *ptr;
 
-    gUnknown_0202FF84[0] = mapObj->coords2.x;
-    gUnknown_0202FF84[1] = mapObj->coords2.y;
-    gUnknown_0202FF84[2] = mapObj->elevation;
-    gUnknown_0202FF84[3] = 2;
-    gUnknown_0202FF84[4] = (mapObj->localId << 8) | mapObj->mapNum;
-    gUnknown_0202FF84[5] = mapObj->mapGroup;
+    gFieldEffectSpawnParams[0] = mapObj->coords2.x;
+    gFieldEffectSpawnParams[1] = mapObj->coords2.y;
+    gFieldEffectSpawnParams[2] = mapObj->elevation;
+    gFieldEffectSpawnParams[3] = 2;
+    gFieldEffectSpawnParams[4] = (mapObj->localId << 8) | mapObj->mapNum;
+    gFieldEffectSpawnParams[5] = mapObj->mapGroup;
 
     ptr = (u8 *)&gSaveBlock1;
-    gUnknown_0202FF84[6] = ((u8)gSaveBlock1.location.mapNum << 8)
+    gFieldEffectSpawnParams[6] = ((u8)gSaveBlock1.location.mapNum << 8)
                          | (u8)gSaveBlock1.location.mapGroup;
 
-    gUnknown_0202FF84[7] = 1;
+    gFieldEffectSpawnParams[7] = 1;
     FieldEffectStart(4);
 }
 
@@ -479,18 +479,18 @@ void sub_8063E94(struct MapObject *mapObj, struct Sprite *sprite)
 {
     u8 *ptr;
 
-    gUnknown_0202FF84[0] = mapObj->coords2.x;
-    gUnknown_0202FF84[1] = mapObj->coords2.y;
-    gUnknown_0202FF84[2] = mapObj->elevation;
-    gUnknown_0202FF84[3] = 2;
-    gUnknown_0202FF84[4] = (mapObj->localId << 8) | mapObj->mapNum;
-    gUnknown_0202FF84[5] = mapObj->mapGroup;
+    gFieldEffectSpawnParams[0] = mapObj->coords2.x;
+    gFieldEffectSpawnParams[1] = mapObj->coords2.y;
+    gFieldEffectSpawnParams[2] = mapObj->elevation;
+    gFieldEffectSpawnParams[3] = 2;
+    gFieldEffectSpawnParams[4] = (mapObj->localId << 8) | mapObj->mapNum;
+    gFieldEffectSpawnParams[5] = mapObj->mapGroup;
 
     ptr = (u8 *)&gSaveBlock1;
-    gUnknown_0202FF84[6] = ((u8)gSaveBlock1.location.mapNum << 8)
+    gFieldEffectSpawnParams[6] = ((u8)gSaveBlock1.location.mapNum << 8)
                          | (u8)gSaveBlock1.location.mapGroup;
 
-    gUnknown_0202FF84[7] = 0;
+    gFieldEffectSpawnParams[7] = 0;
     FieldEffectStart(4);
 }
 
@@ -498,18 +498,18 @@ void sub_8063EE0(struct MapObject *mapObj, struct Sprite *sprite)
 {
     u8 *ptr;
 
-    gUnknown_0202FF84[0] = mapObj->coords2.x;
-    gUnknown_0202FF84[1] = mapObj->coords2.y;
-    gUnknown_0202FF84[2] = mapObj->elevation;
-    gUnknown_0202FF84[3] = 2;
-    gUnknown_0202FF84[4] = (mapObj->localId << 8) | mapObj->mapNum;
-    gUnknown_0202FF84[5] = mapObj->mapGroup;
+    gFieldEffectSpawnParams[0] = mapObj->coords2.x;
+    gFieldEffectSpawnParams[1] = mapObj->coords2.y;
+    gFieldEffectSpawnParams[2] = mapObj->elevation;
+    gFieldEffectSpawnParams[3] = 2;
+    gFieldEffectSpawnParams[4] = (mapObj->localId << 8) | mapObj->mapNum;
+    gFieldEffectSpawnParams[5] = mapObj->mapGroup;
 
     ptr = (u8 *)&gSaveBlock1;
-    gUnknown_0202FF84[6] = ((u8)gSaveBlock1.location.mapNum << 8)
+    gFieldEffectSpawnParams[6] = ((u8)gSaveBlock1.location.mapNum << 8)
                          | (u8)gSaveBlock1.location.mapGroup;
 
-    gUnknown_0202FF84[7] = 1;
+    gFieldEffectSpawnParams[7] = 1;
     FieldEffectStart(17);
 }
 
@@ -517,18 +517,18 @@ void sub_8063F2C(struct MapObject *mapObj, struct Sprite *sprite)
 {
     u8 *ptr;
 
-    gUnknown_0202FF84[0] = mapObj->coords2.x;
-    gUnknown_0202FF84[1] = mapObj->coords2.y;
-    gUnknown_0202FF84[2] = mapObj->elevation;
-    gUnknown_0202FF84[3] = 2;
-    gUnknown_0202FF84[4] = (mapObj->localId << 8) | mapObj->mapNum;
-    gUnknown_0202FF84[5] = mapObj->mapGroup;
+    gFieldEffectSpawnParams[0] = mapObj->coords2.x;
+    gFieldEffectSpawnParams[1] = mapObj->coords2.y;
+    gFieldEffectSpawnParams[2] = mapObj->elevation;
+    gFieldEffectSpawnParams[3] = 2;
+    gFieldEffectSpawnParams[4] = (mapObj->localId << 8) | mapObj->mapNum;
+    gFieldEffectSpawnParams[5] = mapObj->mapGroup;
 
     ptr = (u8 *)&gSaveBlock1;
-    gUnknown_0202FF84[6] = ((u8)gSaveBlock1.location.mapNum << 8)
+    gFieldEffectSpawnParams[6] = ((u8)gSaveBlock1.location.mapNum << 8)
                          | (u8)gSaveBlock1.location.mapGroup;
 
-    gUnknown_0202FF84[7] = 0;
+    gFieldEffectSpawnParams[7] = 0;
     FieldEffectStart(17);
 }
 
@@ -572,11 +572,11 @@ static void DoTracksGroundEffect_Footprints(struct MapObject *mapObj, struct Spr
     // First half-word is a Field Effect script id. (gFieldEffectScriptPointers)
     u16 sandFootprints_FieldEffectData[2] = { 0xD, 0x18 };
 
-    gUnknown_0202FF84[0] = mapObj->coords3.x;
-    gUnknown_0202FF84[1] = mapObj->coords3.y;
-    gUnknown_0202FF84[2] = 149;
-    gUnknown_0202FF84[3] = 2;
-    gUnknown_0202FF84[4] = mapObj->mapobj_unk_18;
+    gFieldEffectSpawnParams[0] = mapObj->coords3.x;
+    gFieldEffectSpawnParams[1] = mapObj->coords3.y;
+    gFieldEffectSpawnParams[2] = 149;
+    gFieldEffectSpawnParams[3] = 2;
+    gFieldEffectSpawnParams[4] = mapObj->mapobj_unk_18;
     FieldEffectStart(sandFootprints_FieldEffectData[a]);
 }
 
@@ -598,11 +598,11 @@ static void DoTracksGroundEffect_BikeTireTracks(
 
     if (mapObj->coords2.x != mapObj->coords3.x || mapObj->coords2.y != mapObj->coords3.y)
     {
-        gUnknown_0202FF84[0] = mapObj->coords3.x;
-        gUnknown_0202FF84[1] = mapObj->coords3.y;
-        gUnknown_0202FF84[2] = 149;
-        gUnknown_0202FF84[3] = 2;
-        gUnknown_0202FF84[4] =
+        gFieldEffectSpawnParams[0] = mapObj->coords3.x;
+        gFieldEffectSpawnParams[1] = mapObj->coords3.y;
+        gFieldEffectSpawnParams[2] = 149;
+        gFieldEffectSpawnParams[3] = 2;
+        gFieldEffectSpawnParams[4] =
             bikeTireTracks_Transitions[mapObj->mapobj_unk_20][mapObj->mapobj_unk_18 - 5];
         FieldEffectStart(FLDEFF_BIKE_TIRE_TRACKS);
     }
@@ -627,10 +627,10 @@ void GroundEffect_JumpOnTallGrass(struct MapObject *mapObj, struct Sprite *sprit
 {
     u8 spriteId;
 
-    gUnknown_0202FF84[0] = mapObj->coords2.x;
-    gUnknown_0202FF84[1] = mapObj->coords2.y;
-    gUnknown_0202FF84[2] = mapObj->elevation;
-    gUnknown_0202FF84[3] = 2;
+    gFieldEffectSpawnParams[0] = mapObj->coords2.x;
+    gFieldEffectSpawnParams[1] = mapObj->coords2.y;
+    gFieldEffectSpawnParams[2] = mapObj->elevation;
+    gFieldEffectSpawnParams[3] = 2;
     FieldEffectStart(FLDEFF_JUMP_TALL_GRASS);
 
     spriteId = sub_8126FF0(
@@ -642,37 +642,37 @@ void GroundEffect_JumpOnTallGrass(struct MapObject *mapObj, struct Sprite *sprit
 
 void GroundEffect_JumpOnLongGrass(struct MapObject *mapObj, struct Sprite *sprite)
 {
-    gUnknown_0202FF84[0] = mapObj->coords2.x;
-    gUnknown_0202FF84[1] = mapObj->coords2.y;
-    gUnknown_0202FF84[2] = mapObj->elevation;
-    gUnknown_0202FF84[3] = 2;
+    gFieldEffectSpawnParams[0] = mapObj->coords2.x;
+    gFieldEffectSpawnParams[1] = mapObj->coords2.y;
+    gFieldEffectSpawnParams[2] = mapObj->elevation;
+    gFieldEffectSpawnParams[3] = 2;
     FieldEffectStart(FLDEFF_JUMP_LONG_GRASS);
 }
 
 void GroundEffect_JumpOnShallowWater(struct MapObject *mapObj, struct Sprite *sprite)
 {
-    gUnknown_0202FF84[0] = mapObj->coords2.x;
-    gUnknown_0202FF84[1] = mapObj->coords2.y;
-    gUnknown_0202FF84[2] = mapObj->elevation;
-    gUnknown_0202FF84[3] = sprite->oam.priority;
+    gFieldEffectSpawnParams[0] = mapObj->coords2.x;
+    gFieldEffectSpawnParams[1] = mapObj->coords2.y;
+    gFieldEffectSpawnParams[2] = mapObj->elevation;
+    gFieldEffectSpawnParams[3] = sprite->oam.priority;
     FieldEffectStart(FLDEFF_JUMP_SMALL_SPLASH);
 }
 
 void GroundEffect_JumpOnWater(struct MapObject *mapObj, struct Sprite *sprite)
 {
-    gUnknown_0202FF84[0] = mapObj->coords2.x;
-    gUnknown_0202FF84[1] = mapObj->coords2.y;
-    gUnknown_0202FF84[2] = mapObj->elevation;
-    gUnknown_0202FF84[3] = sprite->oam.priority;
+    gFieldEffectSpawnParams[0] = mapObj->coords2.x;
+    gFieldEffectSpawnParams[1] = mapObj->coords2.y;
+    gFieldEffectSpawnParams[2] = mapObj->elevation;
+    gFieldEffectSpawnParams[3] = sprite->oam.priority;
     FieldEffectStart(FLDEFF_JUMP_BIG_SPLASH);
 }
 
 void GroundEffect_JumpLandingDust(struct MapObject *mapObj, struct Sprite *sprite)
 {
-    gUnknown_0202FF84[0] = mapObj->coords2.x;
-    gUnknown_0202FF84[1] = mapObj->coords2.y;
-    gUnknown_0202FF84[2] = mapObj->elevation;
-    gUnknown_0202FF84[3] = sprite->oam.priority;
+    gFieldEffectSpawnParams[0] = mapObj->coords2.x;
+    gFieldEffectSpawnParams[1] = mapObj->coords2.y;
+    gFieldEffectSpawnParams[2] = mapObj->elevation;
+    gFieldEffectSpawnParams[3] = sprite->oam.priority;
     FieldEffectStart(FLDEFF_DUST);
 }
 
@@ -688,8 +688,8 @@ void GroundEffect_HotSprings(struct MapObject *mapObj, struct Sprite *sprite)
 
 void GroundEffect_Seaweed(struct MapObject *mapObj, struct Sprite *sprite)
 {
-    gUnknown_0202FF84[0] = mapObj->coords2.x;
-    gUnknown_0202FF84[1] = mapObj->coords2.y;
+    gFieldEffectSpawnParams[0] = mapObj->coords2.x;
+    gFieldEffectSpawnParams[1] = mapObj->coords2.y;
     FieldEffectStart(FLDEFF_BUBBLES);
 }
 
diff --git a/src/field_map_obj.c b/src/field_map_obj.c
index 1568432f5..dc72981bb 100644
--- a/src/field_map_obj.c
+++ b/src/field_map_obj.c
@@ -3895,10 +3895,10 @@ u8 do_berry_tree_growth_sparkle_1(struct MapObject *mapObject, struct Sprite *sp
     {
         if (!(sprite->data7 & 4) && sprite->animNum == 4)
         {
-            gUnknown_0202FF84[0] = mapObject->coords2.x;
-            gUnknown_0202FF84[1] = mapObject->coords2.y;
-            gUnknown_0202FF84[2] = sprite->subpriority - 1;
-            gUnknown_0202FF84[3] = sprite->oam.priority;
+            gFieldEffectSpawnParams[0] = mapObject->coords2.x;
+            gFieldEffectSpawnParams[1] = mapObject->coords2.y;
+            gFieldEffectSpawnParams[2] = sprite->subpriority - 1;
+            gFieldEffectSpawnParams[3] = sprite->oam.priority;
             FieldEffectStart(0x17);
             sprite->animNum = 0;
         }
@@ -3934,10 +3934,10 @@ u8 do_berry_tree_growth_sparkle_2(struct MapObject *mapObject, struct Sprite *sp
     sprite->data1 = 3;
     sprite->data2 = 0;
     sprite->data7 |= 2;
-    gUnknown_0202FF84[0] = mapObject->coords2.x;
-    gUnknown_0202FF84[1] = mapObject->coords2.y;
-    gUnknown_0202FF84[2] = sprite->subpriority - 1;
-    gUnknown_0202FF84[3] = sprite->oam.priority;
+    gFieldEffectSpawnParams[0] = mapObject->coords2.x;
+    gFieldEffectSpawnParams[1] = mapObject->coords2.y;
+    gFieldEffectSpawnParams[2] = sprite->subpriority - 1;
+    gFieldEffectSpawnParams[3] = sprite->oam.priority;
     FieldEffectStart(0x17);
     return 1;
 }
@@ -5086,7 +5086,7 @@ void FieldObjectCB_TreeDisguise(struct Sprite *sprite)
     mapObject = &gMapObjects[sprite->data0];
     if (mapObject->mapobj_unk_21 == 0 || (mapObject->mapobj_unk_21 == 1 && sprite->data7 == 0))
     {
-        FieldObjectGetLocalIdAndMap(mapObject, (u8 *)&gUnknown_0202FF84[0], (u8 *)&gUnknown_0202FF84[1], (u8 *)&gUnknown_0202FF84[2]);
+        FieldObjectGetLocalIdAndMap(mapObject, (u8 *)&gFieldEffectSpawnParams[0], (u8 *)&gFieldEffectSpawnParams[1], (u8 *)&gFieldEffectSpawnParams[2]);
         mapObject->mapobj_unk_1A = FieldEffectStart(0x1c);
         mapObject->mapobj_unk_21 = 1;
         sprite->data7 ++;
@@ -5106,7 +5106,7 @@ void FieldObjectCB_MountainDisguise(struct Sprite *sprite)
     mapObject = &gMapObjects[sprite->data0];
     if (mapObject->mapobj_unk_21 == 0 || (mapObject->mapobj_unk_21 == 1 && sprite->data7 == 0))
     {
-        FieldObjectGetLocalIdAndMap(mapObject, (u8 *)&gUnknown_0202FF84[0], (u8 *)&gUnknown_0202FF84[1], (u8 *)&gUnknown_0202FF84[2]);
+        FieldObjectGetLocalIdAndMap(mapObject, (u8 *)&gFieldEffectSpawnParams[0], (u8 *)&gFieldEffectSpawnParams[1], (u8 *)&gFieldEffectSpawnParams[2]);
         mapObject->mapobj_unk_1A = FieldEffectStart(0x1d);
         mapObject->mapobj_unk_21 = 1;
         sprite->data7 ++;
@@ -7490,7 +7490,7 @@ bool8 sub_8062644(struct MapObject *mapObject, struct Sprite *sprite)
 
 bool8 do_exclamation_mark_bubble_1(struct MapObject *mapObject, struct Sprite *sprite)
 {
-    FieldObjectGetLocalIdAndMap(mapObject, (u8 *)&gUnknown_0202FF84[0], (u8 *)&gUnknown_0202FF84[1], (u8 *)&gUnknown_0202FF84[2]);
+    FieldObjectGetLocalIdAndMap(mapObject, (u8 *)&gFieldEffectSpawnParams[0], (u8 *)&gFieldEffectSpawnParams[1], (u8 *)&gFieldEffectSpawnParams[2]);
     FieldEffectStart(0x0);
     sprite->data2 = 1;
     return TRUE;
@@ -7498,7 +7498,7 @@ bool8 do_exclamation_mark_bubble_1(struct MapObject *mapObject, struct Sprite *s
 
 bool8 do_exclamation_mark_bubble_2(struct MapObject *mapObject, struct Sprite *sprite)
 {
-    FieldObjectGetLocalIdAndMap(mapObject, (u8 *)&gUnknown_0202FF84[0], (u8 *)&gUnknown_0202FF84[1], (u8 *)&gUnknown_0202FF84[2]);
+    FieldObjectGetLocalIdAndMap(mapObject, (u8 *)&gFieldEffectSpawnParams[0], (u8 *)&gFieldEffectSpawnParams[1], (u8 *)&gFieldEffectSpawnParams[2]);
     FieldEffectStart(0x21);
     sprite->data2 = 1;
     return TRUE;
@@ -7506,7 +7506,7 @@ bool8 do_exclamation_mark_bubble_2(struct MapObject *mapObject, struct Sprite *s
 
 bool8 do_heart_bubble(struct MapObject *mapObject, struct Sprite *sprite)
 {
-    FieldObjectGetLocalIdAndMap(mapObject, (u8 *)&gUnknown_0202FF84[0], (u8 *)&gUnknown_0202FF84[1], (u8 *)&gUnknown_0202FF84[2]);
+    FieldObjectGetLocalIdAndMap(mapObject, (u8 *)&gFieldEffectSpawnParams[0], (u8 *)&gFieldEffectSpawnParams[1], (u8 *)&gFieldEffectSpawnParams[2]);
     FieldEffectStart(0x2e);
     sprite->data2 = 1;
     return TRUE;
diff --git a/src/field_map_obj_helpers.c b/src/field_map_obj_helpers.c
index 87be8e011..d8cb33251 100644
--- a/src/field_map_obj_helpers.c
+++ b/src/field_map_obj_helpers.c
@@ -294,7 +294,7 @@ void sub_8064990(u8 a1, u8 dir)
 
 u32 oe_exec_and_other_stuff(u8 fieldEffectId, struct MapObject *mapObject)
 {
-    FieldObjectGetLocalIdAndMap(mapObject, (u8 *)&gUnknown_0202FF84[0], (u8 *)&gUnknown_0202FF84[1], (u8 *)&gUnknown_0202FF84[2]);
+    FieldObjectGetLocalIdAndMap(mapObject, (u8 *)&gFieldEffectSpawnParams[0], (u8 *)&gFieldEffectSpawnParams[1], (u8 *)&gFieldEffectSpawnParams[2]);
     return FieldEffectStart(fieldEffectId);
 }
 
@@ -310,9 +310,9 @@ void DoShadowFieldEffect(struct MapObject *mapObject)
 void DoRippleFieldEffect(struct MapObject *mapObject, struct Sprite *sprite)
 {
     const struct MapObjectGraphicsInfo *gfxInfo = GetFieldObjectGraphicsInfo(mapObject->graphicsId);
-    gUnknown_0202FF84[0] = sprite->pos1.x;
-    gUnknown_0202FF84[1] = sprite->pos1.y + (gfxInfo->height >> 1) - 2;
-    gUnknown_0202FF84[2] = 151;
-    gUnknown_0202FF84[3] = 3;
+    gFieldEffectSpawnParams[0] = sprite->pos1.x;
+    gFieldEffectSpawnParams[1] = sprite->pos1.y + (gfxInfo->height >> 1) - 2;
+    gFieldEffectSpawnParams[2] = 151;
+    gFieldEffectSpawnParams[3] = 3;
     FieldEffectStart(5);
 }
diff --git a/src/field_player_avatar.c b/src/field_player_avatar.c
index 2a7b2f3e0..b055036ea 100644
--- a/src/field_player_avatar.c
+++ b/src/field_player_avatar.c
@@ -666,9 +666,9 @@ void PlayerAvatarTransition_Surfing(struct MapObject *a)
     sub_805B980(a, GetPlayerAvatarGraphicsIdByStateId(3));
     FieldObjectTurn(a, a->placeholder18);
     SetPlayerAvatarStateMask(8);
-    gUnknown_0202FF84[0] = a->coords2.x;
-    gUnknown_0202FF84[1] = a->coords2.y;
-    gUnknown_0202FF84[2] = gPlayerAvatar.mapObjectId;
+    gFieldEffectSpawnParams[0] = a->coords2.x;
+    gFieldEffectSpawnParams[1] = a->coords2.y;
+    gFieldEffectSpawnParams[2] = gPlayerAvatar.mapObjectId;
     unk = FieldEffectStart(8);
     a->mapobj_unk_1A = unk;
     sub_8127ED0(unk, 1);
@@ -1226,10 +1226,10 @@ u8 sub_8059EA4(struct Task *task, struct MapObject *b, struct MapObject *c)
         FieldObjectClearAnimIfSpecialAnimFinished(c);
         FieldObjectSetSpecialAnim(b, GetStepInPlaceDelay16AnimId(task->data[2]));
         FieldObjectSetSpecialAnim(c, GetSimpleGoAnimId(task->data[2]));
-        gUnknown_0202FF84[0] = c->coords2.x;
-        gUnknown_0202FF84[1] = c->coords2.y;
-        gUnknown_0202FF84[2] = c->elevation;
-        gUnknown_0202FF84[3] = gSprites[c->spriteId].oam.priority;
+        gFieldEffectSpawnParams[0] = c->coords2.x;
+        gFieldEffectSpawnParams[1] = c->coords2.y;
+        gFieldEffectSpawnParams[2] = c->elevation;
+        gFieldEffectSpawnParams[3] = gSprites[c->spriteId].oam.priority;
         FieldEffectStart(10);
         PlaySE(SE_W070);
         task->data[0]++;
diff --git a/src/fldeff_cut.c b/src/fldeff_cut.c
index b394d1e4c..d0fdd5139 100644
--- a/src/fldeff_cut.c
+++ b/src/fldeff_cut.c
@@ -71,7 +71,7 @@ bool8 SetUpFieldMove_Cut(void)
 void sub_80A25E8(void)
 {
     FieldEffectStart(1);
-    gUnknown_0202FF84[0] = gLastFieldPokeMenuOpened;
+    gFieldEffectSpawnParams[0] = gLastFieldPokeMenuOpened;
 }
 
 bool8 FldEff_UseCutOnGrass(void)
@@ -86,7 +86,7 @@ bool8 FldEff_UseCutOnGrass(void)
 
 void sub_80A2634(void)
 {
-    gUnknown_0202FF84[0] = gLastFieldPokeMenuOpened;
+    gFieldEffectSpawnParams[0] = gLastFieldPokeMenuOpened;
     ScriptContext1_SetupScript(&UseCutScript);
 }
 
diff --git a/src/fldeff_flash.c b/src/fldeff_flash.c
index 6c2633567..df05de52b 100644
--- a/src/fldeff_flash.c
+++ b/src/fldeff_flash.c
@@ -62,7 +62,7 @@ bool8 SetUpFieldMove_Flash(void)
 void sub_810CBFC(void)
 {
     u8 taskId = oei_task_add();
-    gUnknown_0202FF84[0] = gLastFieldPokeMenuOpened;
+    gFieldEffectSpawnParams[0] = gLastFieldPokeMenuOpened;
     gTasks[taskId].data[8] = (uintptr_t)sub_810CC34 >> 16;
     gTasks[taskId].data[9] = (uintptr_t)sub_810CC34;
 }
diff --git a/src/fldeff_strength.c b/src/fldeff_strength.c
index 81f4f63c6..a5033e7b7 100644
--- a/src/fldeff_strength.c
+++ b/src/fldeff_strength.c
@@ -42,13 +42,13 @@ bool8 SetUpFieldMove_Strength(void)
 
 static void sub_811AA18(void)
 {
-    gUnknown_0202FF84[0] = gLastFieldPokeMenuOpened;
+    gFieldEffectSpawnParams[0] = gLastFieldPokeMenuOpened;
     ScriptContext1_SetupScript(UseStrengthScript);
 }
 
 static void sub_811AA38(void)
 {
-    gUnknown_0202FF84[0] = gLastFieldPokeMenuOpened;
+    gFieldEffectSpawnParams[0] = gLastFieldPokeMenuOpened;
     FieldEffectStart(40);
 }
 
@@ -58,7 +58,7 @@ bool8 FldEff_UseStrength(void)
 
     gTasks[taskId].data[8] = (u32)sub_811AA9C >> 16;
     gTasks[taskId].data[9] = (u32)sub_811AA9C;
-    GetMonNickname(&gPlayerParty[gUnknown_0202FF84[0]], gStringVar1);
+    GetMonNickname(&gPlayerParty[gFieldEffectSpawnParams[0]], gStringVar1);
     return FALSE;
 }
 
diff --git a/src/fldeff_sweetscent.c b/src/fldeff_sweetscent.c
index 4c3e6bf4a..66fa3dae2 100644
--- a/src/fldeff_sweetscent.c
+++ b/src/fldeff_sweetscent.c
@@ -31,7 +31,7 @@ bool8 SetUpFieldMove_SweetScent(void)
 static void sub_812BFD4(void)
 {
     FieldEffectStart(51);
-    gUnknown_0202FF84[0] = gLastFieldPokeMenuOpened;
+    gFieldEffectSpawnParams[0] = gLastFieldPokeMenuOpened;
 }
 
 bool8 FldEff_SweetScent()
diff --git a/src/fldeff_teleport.c b/src/fldeff_teleport.c
index 74e68df06..8f75099dc 100644
--- a/src/fldeff_teleport.c
+++ b/src/fldeff_teleport.c
@@ -27,7 +27,7 @@ void hm_teleport_run_dp02scr(void)
 {
     new_game();
     FieldEffectStart(63);
-    gUnknown_0202FF84[0] = gLastFieldPokeMenuOpened;
+    gFieldEffectSpawnParams[0] = gLastFieldPokeMenuOpened;
 }
 
 bool8 FldEff_UseTeleport(void)
diff --git a/src/pokemon_menu.c b/src/pokemon_menu.c
index 821101569..94801f1a2 100644
--- a/src/pokemon_menu.c
+++ b/src/pokemon_menu.c
@@ -786,7 +786,7 @@ static void sub_808ABA8(u8 taskID)
 {
     if (sub_807D770() == TRUE)
     {
-        gUnknown_0202FF84[0] = GetMonData(&gPlayerParty[gLastFieldPokeMenuOpened], MON_DATA_SPECIES);
+        gFieldEffectSpawnParams[0] = GetMonData(&gPlayerParty[gLastFieldPokeMenuOpened], MON_DATA_SPECIES);
         gUnknown_03005CE4();
         DestroyTask(taskID);
     }
@@ -803,7 +803,7 @@ static void sub_808ABF4(u8 taskID)
 
 static void sub_808AC2C(void)
 {
-    gUnknown_0202FF84[0] = gLastFieldPokeMenuOpened;
+    gFieldEffectSpawnParams[0] = gLastFieldPokeMenuOpened;
     FieldEffectStart(FLDEFF_USE_SURF);
 }
 
@@ -821,7 +821,7 @@ static bool8 SetUpFieldMove_Surf(void)
 
 static void sub_808AC8C(void)
 {
-    gUnknown_0202FF84[0] = gLastFieldPokeMenuOpened;
+    gFieldEffectSpawnParams[0] = gLastFieldPokeMenuOpened;
     FieldEffectStart(FLDEFF_USE_FLY);
 }
 
@@ -872,14 +872,14 @@ u16 unref_sub_808AD88(void)
 
 static void sub_808ADAC(void)
 {
-    gUnknown_0202FF84[0] = gLastFieldPokeMenuOpened;
+    gFieldEffectSpawnParams[0] = gLastFieldPokeMenuOpened;
     FieldEffectStart(FLDEFF_USE_DIVE);
 }
 
 static bool8 SetUpFieldMove_Dive(void)
 {
-    gUnknown_0202FF84[1] = sub_8068F18();
-    if (gUnknown_0202FF84[1])
+    gFieldEffectSpawnParams[1] = sub_8068F18();
+    if (gFieldEffectSpawnParams[1])
     {
         gFieldCallback = sub_808AB90;
         gUnknown_03005CE4 = sub_808ADAC;
@@ -891,7 +891,7 @@ static bool8 SetUpFieldMove_Dive(void)
 
 static void sub_808AE08(void)
 {
-    gUnknown_0202FF84[0] = gLastFieldPokeMenuOpened;
+    gFieldEffectSpawnParams[0] = gLastFieldPokeMenuOpened;
     FieldEffectStart(FLDEFF_USE_WATERFALL);
 }
 
diff --git a/src/rom6.c b/src/rom6.c
index ff032b6c2..1f72eba93 100644
--- a/src/rom6.c
+++ b/src/rom6.c
@@ -91,17 +91,17 @@ static void sub_810B428(u8 taskId)
 {
     if (!FieldEffectActiveListContains(6))
     {
-        gUnknown_0202FF84[1] = player_get_direction_lower_nybble();
-        if (gUnknown_0202FF84[1] == 1)
-            gUnknown_0202FF84[2] = 0;
-        if (gUnknown_0202FF84[1] == 2)
-            gUnknown_0202FF84[2] = 1;
-        if (gUnknown_0202FF84[1] == 3)
-            gUnknown_0202FF84[2] = 2;
-        if (gUnknown_0202FF84[1] == 4)
-            gUnknown_0202FF84[2] = 3;
+        gFieldEffectSpawnParams[1] = player_get_direction_lower_nybble();
+        if (gFieldEffectSpawnParams[1] == 1)
+            gFieldEffectSpawnParams[2] = 0;
+        if (gFieldEffectSpawnParams[1] == 2)
+            gFieldEffectSpawnParams[2] = 1;
+        if (gFieldEffectSpawnParams[1] == 3)
+            gFieldEffectSpawnParams[2] = 2;
+        if (gFieldEffectSpawnParams[1] == 4)
+            gFieldEffectSpawnParams[2] = 3;
         sub_805B980(&gMapObjects[gPlayerAvatar.mapObjectId], GetPlayerAvatarGraphicsIdByCurrentState());
-        StartSpriteAnim(&gSprites[gPlayerAvatar.spriteId], gUnknown_0202FF84[2]);
+        StartSpriteAnim(&gSprites[gPlayerAvatar.spriteId], gFieldEffectSpawnParams[2]);
         FieldEffectActiveListRemove(6);
         gTasks[taskId].func = sub_810B4CC;
     }
@@ -132,7 +132,7 @@ bool8 SetUpFieldMove_RockSmash(void)
 
 static void sub_810B53C(void)
 {
-    gUnknown_0202FF84[0] = gLastFieldPokeMenuOpened;
+    gFieldEffectSpawnParams[0] = gLastFieldPokeMenuOpened;
     ScriptContext1_SetupScript(UseRockSmashScript);
 }
 
@@ -171,7 +171,7 @@ static void sub_810B5D8(void)
 {
     sub_8053014();
     FieldEffectStart(0x26);
-    gUnknown_0202FF84[0] = gLastFieldPokeMenuOpened;
+    gFieldEffectSpawnParams[0] = gLastFieldPokeMenuOpened;
 }
 
 int FldEff_UseDig(void)
diff --git a/src/scrcmd.c b/src/scrcmd.c
index 66578f350..752aafe35 100644
--- a/src/scrcmd.c
+++ b/src/scrcmd.c
@@ -1724,7 +1724,7 @@ bool8 ScrCmd_doanimation(struct ScriptContext *ctx)
 bool8 ScrCmd_setanimation(struct ScriptContext *ctx)
 {
     u8 v2 = ScriptReadByte(ctx);
-    gUnknown_0202FF84[v2] = (s16)VarGet(ScriptReadHalfword(ctx));
+    gFieldEffectSpawnParams[v2] = (s16)VarGet(ScriptReadHalfword(ctx));
     return FALSE;
 }
 
diff --git a/src/trainer_see.c b/src/trainer_see.c
index feb35c67c..73dba2d60 100644
--- a/src/trainer_see.c
+++ b/src/trainer_see.c
@@ -201,7 +201,7 @@ s8 sub_8084398(u8 taskId, struct Task *task, struct MapObject *trainerObj)
 {
     u8 direction;
 
-    FieldObjectGetLocalIdAndMap(trainerObj, (u8 *)&gUnknown_0202FF84[0], (u8 *)&gUnknown_0202FF84[1], (u8 *)&gUnknown_0202FF84[2]);
+    FieldObjectGetLocalIdAndMap(trainerObj, (u8 *)&gFieldEffectSpawnParams[0], (u8 *)&gFieldEffectSpawnParams[1], (u8 *)&gFieldEffectSpawnParams[2]);
     FieldEffectStart(0);
 
     direction = GetFaceDirectionAnimId(trainerObj->mapobj_unk_18);
@@ -311,10 +311,10 @@ s8 sub_80845FC(u8 taskId, struct Task *task, struct MapObject *trainerObj)
 {
     if (FieldObjectCheckIfSpecialAnimFinishedOrInactive(trainerObj))
     {
-        gUnknown_0202FF84[0] = trainerObj->coords2.x;
-        gUnknown_0202FF84[1] = trainerObj->coords2.y;
-        gUnknown_0202FF84[2] = gSprites[trainerObj->spriteId].subpriority - 1;
-        gUnknown_0202FF84[3] = 2;
+        gFieldEffectSpawnParams[0] = trainerObj->coords2.x;
+        gFieldEffectSpawnParams[1] = trainerObj->coords2.y;
+        gFieldEffectSpawnParams[2] = gSprites[trainerObj->spriteId].subpriority - 1;
+        gFieldEffectSpawnParams[3] = 2;
         task->data[4] = FieldEffectStart(49);
         task->data[0]++;
     }
@@ -421,9 +421,9 @@ void sub_8084894(struct Sprite *sprite, u16 a2, u8 a3)
     sprite->oam.priority = 1;
     sprite->coordOffsetEnabled = 1;
 
-    sprite->data0 = gUnknown_0202FF84[0];
-    sprite->data1 = gUnknown_0202FF84[1];
-    sprite->data2 = gUnknown_0202FF84[2];
+    sprite->data0 = gFieldEffectSpawnParams[0];
+    sprite->data1 = gFieldEffectSpawnParams[1];
+    sprite->data2 = gFieldEffectSpawnParams[2];
     sprite->data3 = -5;
     sprite->data7 = a2;