label field_effect_helpers

10 files changed, 171 insertions, 174 deletions

diff --git a/asm/field_player_avatar.s b/asm/field_player_avatar.s
index 0abbf014f..c7b3a0486 100644
--- a/asm/field_player_avatar.s
+++ b/asm/field_player_avatar.s
@@ -1793,7 +1793,7 @@ InitPlayerAvatar: @ 808BFE0
 	movs r1, 0x1
 	orrs r0, r1
 	strb r0, [r4, 0x2]
-	bl sub_8154228
+	bl CreateWarpArrowSprite
 	strb r0, [r4, 0x1B]
 	adds r0, r4, 0
 	mov r1, r9
@@ -2080,7 +2080,7 @@ _0808C2A2:
 	movs r1, 0
 	ldrsh r3, [r7, r1]
 	adds r1, r6, 0
-	bl sub_8154298
+	bl ShowWarpArrowSprite
 	b _0808C302
 	.pool
 _0808C2E8:
@@ -2095,7 +2095,7 @@ _0808C2E8:
 	cmp r1, 0x3
 	ble _0808C2A2
 	ldrb r0, [r5, 0x1B]
-	bl objid_set_invisible
+	bl SetSpriteInvisible
 _0808C302:
 	add sp, 0x4
 	pop {r3,r4}
diff --git a/data/field_effect_scripts.s b/data/field_effect_scripts.s
index c0c74496f..eab655877 100644
--- a/data/field_effect_scripts.s
+++ b/data/field_effect_scripts.s
@@ -86,15 +86,15 @@ gFieldEffectScript_UseCutOnTree:: @ 82DBAEC
 	field_eff_end
 
 gFieldEffectScript_Shadow:: @ 82DBAF2
-	field_eff_callnative oei_shadow
+	field_eff_callnative FldEff_Shadow
 	field_eff_end
 
 gFieldEffectScript_TallGrass:: @ 82DBAF8
-	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo1, oei_grass_normal
+	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo1, FldEff_TallGrass
 	field_eff_end
 
 gFieldEffectScript_Ripple:: @ 82DBB02
-	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo1, oei_ripples
+	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo1, FldEff_Ripple
 	field_eff_end
 
 gFieldEffectScript_FieldMoveShowMon:: @ 82DBB0C
@@ -102,11 +102,11 @@ gFieldEffectScript_FieldMoveShowMon:: @ 82DBB0C
 	field_eff_end
 
 gFieldEffectScript_Ash:: @ 82DBB12
-	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo1, oei_ash
+	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo1, FldEff_Ash
 	field_eff_end
 
 gFieldEffectScript_SurfBlob:: @ 82DBB1C
-	field_eff_callnative sub_8155534
+	field_eff_callnative FldEff_SurfBlob
 	field_eff_end
 
 gFieldEffectScript_UseSurf:: @ 82DBB22
@@ -114,7 +114,7 @@ gFieldEffectScript_UseSurf:: @ 82DBB22
 	field_eff_end
 
 gFieldEffectScript_GroundImpactDust:: @ 82DBB28
-	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo0, sub_8155890
+	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo0, FldEff_Dust
 	field_eff_end
 
 gFieldEffectScript_Unknown11:: @ 82DBB32
@@ -122,55 +122,55 @@ gFieldEffectScript_Unknown11:: @ 82DBB32
 	field_eff_end
 
 gFieldEffectScript_BikeHopTallGrass:: @ 82DBB38
-	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo1, sub_8154658
+	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo1, FldEff_JumpTallGrass
 	field_eff_end
 
 gFieldEffectScript_SandFootprints:: @ 82DBB42
-	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo0, sub_8154B04
+	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo0, FldEff_SandFootprints
 	field_eff_end
 
 gFieldEffectScript_BikeHopBigSplash:: @ 82DBB4C
-	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo0, oei_water_drop_tall
+	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo0, FldEff_JumpBigSplash
 	field_eff_end
 
 gFieldEffectScript_Splash:: @ 82DBB56
-	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo0, sub_8154CEC
+	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo0, FldEff_Splash
 	field_eff_end
 
 gFieldEffectScript_BikeHopSmallSplash:: @ 82DBB60
-	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo0, sub_8154E1C
+	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo0, FldEff_JumpSmallSplash
 	field_eff_end
 
 gFieldEffectScript_LongGrass:: @ 82DBB6A
-	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo1, sub_8154758
+	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo1, FldEff_LongGrass
 	field_eff_end
 
 gFieldEffectScript_Unknown18:: @ 82DBB74
-	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo1, sub_81548FC
+	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo1, FldEff_JumpLongGrass
 	field_eff_end
 
 gFieldEffectScript_Unknown19:: @ 82DBB7E
-	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo1, sub_81551F0
+	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo1, FldEff_Unknown19
 	field_eff_end
 
 gFieldEffectScript_Unknown20:: @ 82DBB88
-	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo1, sub_815525C
+	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo1, FldEff_Unknown20
 	field_eff_end
 
 gFieldEffectScript_Unknown21:: @ 82DBB92
-	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo0, sub_81552C8
+	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo0, FldEff_Unknown21
 	field_eff_end
 
 gFieldEffectScript_Unknown22:: @ 82DBB9C
-	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo0, sub_8155334
+	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo0, FldEff_Unknown22
 	field_eff_end
 
 gFieldEffectScript_BerryTreeGrowthSparkle:: @ 82DBBA6
-	field_eff_callnative sub_8155B2C
+	field_eff_callnative FldEff_BerryTreeGrowthSparkle
 	field_eff_end
 
 gFieldEffectScript_DeepSandFootprints:: @ 82DBBAC
-	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo0, sub_8154B78
+	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo0, FldEff_DeepSandFootprints
 	field_eff_end
 
 gFieldEffectScript_Unknown25:: @ 82DBBB6
@@ -211,11 +211,11 @@ gFieldEffectScript_QuestionMarkIcon:: @ 82DBBEF
 	field_eff_end
 
 gFieldEffectScript_FeetInFlowingWater:: @ 82DBBF5
-	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo0, sub_8154EFC
+	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo0, FldEff_FeetInFlowingWater
 	field_eff_end
 
 gFieldEffectScript_BikeTireTracks:: @ 82DBBFF
-	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo0, sub_8154BEC
+	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo0, FldEff_BikeTireTracks
 	field_eff_end
 
 gFieldEffectScript_SandDisguisePlaceholder:: @ 82DBC09
@@ -235,15 +235,15 @@ gFieldEffectScript_Unknown38:: @ 82DBC1B
 	field_eff_end
 
 gFieldEffectScript_Unknown39:: @ 82DBC21
-	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo0, sub_8155900
+	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo0, FldEff_SandPile
 	field_eff_end
 
 gFieldEffectScript_ShortGrass:: @ 82DBC2B
-	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo1, sub_815496C
+	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo1, FldEff_ShortGrass
 	field_eff_end
 
 gFieldEffectScript_HotSpringsWater:: @ 82DBC35
-	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo1, sub_81550B4
+	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo1, FldEff_HotSpringsWater
 	field_eff_end
 
 gFieldEffectScript_Unknown43:: @ 82DBC3F
@@ -288,11 +288,11 @@ gFieldEffectScript_Unknown52:: @ 82DBC86
 	field_eff_end
 
 gFieldEffectScript_Bubbles:: @ 82DBC90
-	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo0, sub_8155A88
+	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo0, FldEff_Bubbles
 	field_eff_end
 
 gFieldEffectScript_Unknown54:: @ 82DBC9A
-	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo3, sub_8155DDC
+	field_eff_loadfadedpal_callnative gFieldEffectObjectPaletteInfo3, FldEff_Sparkle
 	field_eff_end
 
 gFieldEffectScript_Unknown55:: @ 82DBCA4
diff --git a/include/event_object_movement.h b/include/event_object_movement.h
index 80b9f3fc0..ddccfe39b 100644
--- a/include/event_object_movement.h
+++ b/include/event_object_movement.h
@@ -102,17 +102,17 @@ void sub_80930E0(s16 *, s16 *, s16, s16);
 void EventObjectClearHeldMovement(struct EventObject *);
 void EventObjectClearHeldMovementIfActive(struct EventObject *);
 void TrySpawnEventObjects(s16, s16);
-u8 sprite_new(u8, u8, s16, s16, u8, u8);
-u8 AddPseudoEventObject(u16, void (*)(struct Sprite *), s16, s16, u8);
+u8 sprite_new(u8 graphicsId, u8 a1, s16 x, s16 y, u8 z, u8 direction);
+u8 AddPseudoEventObject(u16, void (*)(struct Sprite *), s16 x, s16 y, u8 subpriority);
 u8 show_sprite(u8, u8, u8);
-u8 SpawnSpecialEventObjectParameterized(u8, u8, u8, s16, s16, u8);
+u8 SpawnSpecialEventObjectParameterized(u8 graphicsId, u8 movementBehavior, u8 localId, s16 x, s16 y, u8 z);
 u8 SpawnSpecialEventObject(struct EventObjectTemplate *);
 void sub_8093038(s16, s16, s16 *, s16 *);
 void CameraObjectReset1(void);
-void EventObjectSetGraphicsId(struct EventObject *, u8);
+void EventObjectSetGraphicsId(struct EventObject *, u8 graphicsId);
 void EventObjectTurn(struct EventObject *, u8);
 void EventObjectTurnByLocalIdAndMap(u8, u8, u8, u8);
-const struct EventObjectGraphicsInfo *GetEventObjectGraphicsInfo(u8);
+const struct EventObjectGraphicsInfo *GetEventObjectGraphicsInfo(u8 graphicsId);
 void npc_by_local_id_and_map_set_field_1_bit_x20(u8, u8, u8, u8);
 void FreeAndReserveObjectSpritePalettes(void);
 void sub_808E82C(u8, u8, u8, s16, s16);
diff --git a/include/field_effect_helpers.h b/include/field_effect_helpers.h
index 547f515eb..9c354159b 100644
--- a/include/field_effect_helpers.h
+++ b/include/field_effect_helpers.h
@@ -1,7 +1,3 @@
-//
-// Created by scott on 9/7/2017.
-//
-
 #ifndef GUARD_FIELD_EFFECT_HELPERS_H
 #define GUARD_FIELD_EFFECT_HELPERS_H
 
@@ -10,29 +6,29 @@
 // Exported RAM declarations
 
 // Exported ROM declarations
-u8 sub_8154228(void);
+u8 CreateWarpArrowSprite(void);
 bool8 sub_8155DA0(struct EventObject *);
 void sub_8155D78(struct EventObject *);
 void sub_81555AC(u8, u8);
-void ash(s16, s16, u16, s16);
+void StartAshFieldEffect(s16, s16, u16, s16);
 void SetUpReflection(struct EventObject*, struct Sprite*, u8);
 u32 StartFieldEffectForEventObject(u8, struct EventObject*);
-u8 sub_81546C8(u8, u8, u8, s16, s16);
+u8 FindTallGrassFieldEffectSpriteId(u8 localId, u8 mapNum, u8 mapGroup, s16 x, s16 y);
 void sub_8155F80(struct Sprite*);
-void oamc_shadow(struct Sprite*);
-void unc_grass_normal(struct Sprite*);
+void UpdateShadowFieldEffect(struct Sprite*);
+void UpdateTallGrassFieldEffect(struct Sprite*);
 void sub_81561D0(struct Sprite*);
-void sub_8155460(struct Sprite*);
-void sub_8155658(struct Sprite*);
+void UpdateAshFieldEffect(struct Sprite*);
+void UpdateSurfBlobFieldEffect(struct Sprite*);
 void sub_8156194(struct Sprite*);
-void sub_8154C60(struct Sprite*);
-void sub_8154D90(struct Sprite*);
-void unc_grass_tall(struct Sprite*);
-void sub_81559BC(struct Sprite*);
-void sub_8155C88(struct Sprite*);
-void sub_8154A10(struct Sprite*);
-void sub_8155158(struct Sprite*);
-void sub_8155AEC(struct Sprite*);
-void sub_8155E50(struct Sprite*);
+void UpdateFootprintsTireTracksFieldEffect(struct Sprite*);
+void UpdateSplashFieldEffect(struct Sprite*);
+void UpdateLongGrassFieldEffect(struct Sprite*);
+void UpdateSandPileFieldEffect(struct Sprite*);
+void UpdateDisguiseFieldEffect(struct Sprite*);
+void UpdateShortGrassFieldEffect(struct Sprite*);
+void UpdateHotSpringsWaterFieldEffect(struct Sprite*);
+void UpdateBubblesFieldEffect(struct Sprite*);
+void UpdateSparkleFieldEffect(struct Sprite*);
 
 #endif //GUARD_FIELD_EFFECT_HELPERS_H
diff --git a/include/rom6.h b/include/rom6.h
index 96c3b3ca2..8b133e56e 100644
--- a/include/rom6.h
+++ b/include/rom6.h
@@ -12,7 +12,7 @@ void UpdateFrontierManiac(u16 days);
 void UpdateFrontierGambler(u16 days);
 void SetShoalItemFlag(u16 days);
 
-bool8 CheckObjectGraphicsInFrontOfPlayer(u8);
+bool8 CheckObjectGraphicsInFrontOfPlayer(u8 graphicsId);
 u8 oei_task_add(void);
 
 #endif //GUARD_ROM6_H
diff --git a/src/data/field_event_obj/field_effect_objects.h b/src/data/field_event_obj/field_effect_objects.h
index 15fc73343..33fe66fe2 100755
--- a/src/data/field_event_obj/field_effect_objects.h
+++ b/src/data/field_event_obj/field_effect_objects.h
@@ -32,13 +32,13 @@ const struct SpriteFrameImage gFieldEffectObjectPicTable_ShadowExtraLarge[] = {
     obj_frame_tiles(gFieldEffectObjectPic_ShadowExtraLarge),
 };
 
-const struct SpriteTemplate gFieldEffectObjectTemplate_ShadowSmall = {0xFFFF, 0xFFFF, &gEventObjectBaseOam_8x8, gFieldEffectObjectImageAnimTable_Shadow, gFieldEffectObjectPicTable_ShadowSmall, gDummySpriteAffineAnimTable, oamc_shadow};
+const struct SpriteTemplate gFieldEffectObjectTemplate_ShadowSmall = {0xFFFF, 0xFFFF, &gEventObjectBaseOam_8x8, gFieldEffectObjectImageAnimTable_Shadow, gFieldEffectObjectPicTable_ShadowSmall, gDummySpriteAffineAnimTable, UpdateShadowFieldEffect};
 
-const struct SpriteTemplate gFieldEffectObjectTemplate_ShadowMedium = {0xFFFF, 0xFFFF, &gEventObjectBaseOam_16x8, gFieldEffectObjectImageAnimTable_Shadow, gFieldEffectObjectPicTable_ShadowMedium, gDummySpriteAffineAnimTable, oamc_shadow};
+const struct SpriteTemplate gFieldEffectObjectTemplate_ShadowMedium = {0xFFFF, 0xFFFF, &gEventObjectBaseOam_16x8, gFieldEffectObjectImageAnimTable_Shadow, gFieldEffectObjectPicTable_ShadowMedium, gDummySpriteAffineAnimTable, UpdateShadowFieldEffect};
 
-const struct SpriteTemplate gFieldEffectObjectTemplate_ShadowLarge = {0xFFFF, 0xFFFF, &gEventObjectBaseOam_32x8, gFieldEffectObjectImageAnimTable_Shadow, gFieldEffectObjectPicTable_ShadowLarge, gDummySpriteAffineAnimTable, oamc_shadow};
+const struct SpriteTemplate gFieldEffectObjectTemplate_ShadowLarge = {0xFFFF, 0xFFFF, &gEventObjectBaseOam_32x8, gFieldEffectObjectImageAnimTable_Shadow, gFieldEffectObjectPicTable_ShadowLarge, gDummySpriteAffineAnimTable, UpdateShadowFieldEffect};
 
-const struct SpriteTemplate gFieldEffectObjectTemplate_ShadowExtraLarge = {0xFFFF, 0xFFFF, &gEventObjectBaseOam_64x32, gFieldEffectObjectImageAnimTable_Shadow, gFieldEffectObjectPicTable_ShadowExtraLarge, gDummySpriteAffineAnimTable, oamc_shadow};
+const struct SpriteTemplate gFieldEffectObjectTemplate_ShadowExtraLarge = {0xFFFF, 0xFFFF, &gEventObjectBaseOam_64x32, gFieldEffectObjectImageAnimTable_Shadow, gFieldEffectObjectPicTable_ShadowExtraLarge, gDummySpriteAffineAnimTable, UpdateShadowFieldEffect};
 
 const struct SpriteFrameImage gFieldEffectObjectPicTable_TallGrass[] = {
     overworld_frame(gFieldEffectObjectPic_TallGrass, 2, 2, 0),
@@ -63,7 +63,7 @@ const union AnimCmd *const gFieldEffectObjectImageAnimTable_TallGrass[] =
     gFieldEffectObjectImageAnim_850CA84,
 };
 
-const struct SpriteTemplate gFieldEffectObjectTemplate_TallGrass = {0xFFFF, 0x1005, &gEventObjectBaseOam_16x16, gFieldEffectObjectImageAnimTable_TallGrass, gFieldEffectObjectPicTable_TallGrass, gDummySpriteAffineAnimTable, unc_grass_normal};
+const struct SpriteTemplate gFieldEffectObjectTemplate_TallGrass = {0xFFFF, 0x1005, &gEventObjectBaseOam_16x16, gFieldEffectObjectImageAnimTable_TallGrass, gFieldEffectObjectPicTable_TallGrass, gDummySpriteAffineAnimTable, UpdateTallGrassFieldEffect};
 
 const struct SpriteFrameImage gFieldEffectObjectPicTable_Ripple[] = {
     overworld_frame(gFieldEffectObjectPic_Ripple, 2, 2, 0),
@@ -116,7 +116,7 @@ const union AnimCmd *const gFieldEffectObjectImageAnimTable_Ash[] =
     gFieldEffectObjectImageAnim_850CB48,
 };
 
-const struct SpriteTemplate gFieldEffectObjectTemplate_Ash = {0xFFFF, 0x1005, &gEventObjectBaseOam_16x16, gFieldEffectObjectImageAnimTable_Ash, gFieldEffectObjectPicTable_Ash, gDummySpriteAffineAnimTable, sub_8155460};
+const struct SpriteTemplate gFieldEffectObjectTemplate_Ash = {0xFFFF, 0x1005, &gEventObjectBaseOam_16x16, gFieldEffectObjectImageAnimTable_Ash, gFieldEffectObjectPicTable_Ash, gDummySpriteAffineAnimTable, UpdateAshFieldEffect};
 
 const struct SpriteFrameImage gFieldEffectObjectPicTable_SurfBlob[] = {
     overworld_frame(gFieldEffectObjectPic_SurfBlob, 4, 4, 0),
@@ -156,7 +156,7 @@ const union AnimCmd *const gFieldEffectObjectImageAnimTable_SurfBlob[] =
     gFieldEffectObjectImageAnim_850CBAC,
 };
 
-const struct SpriteTemplate gFieldEffectObjectTemplate_SurfBlob = {0xFFFF, 0xFFFF, &gEventObjectBaseOam_32x32, gFieldEffectObjectImageAnimTable_SurfBlob, gFieldEffectObjectPicTable_SurfBlob, gDummySpriteAffineAnimTable, sub_8155658};
+const struct SpriteTemplate gFieldEffectObjectTemplate_SurfBlob = {0xFFFF, 0xFFFF, &gEventObjectBaseOam_32x32, gFieldEffectObjectImageAnimTable_SurfBlob, gFieldEffectObjectPicTable_SurfBlob, gDummySpriteAffineAnimTable, UpdateSurfBlobFieldEffect};
 
 const struct SpriteFrameImage gFieldEffectObjectPicTable_Arrow[] = {
     overworld_frame(gFieldEffectObjectPic_Arrow, 2, 2, 0),
@@ -289,7 +289,7 @@ const union AnimCmd *const gFieldEffectObjectImageAnimTable_SandFootprints[] =
     gFieldEffectObjectImageAnim_850CD30,
 };
 
-const struct SpriteTemplate gFieldEffectObjectTemplate_SandFootprints = {0xFFFF, 0x1004, &gEventObjectBaseOam_16x16, gFieldEffectObjectImageAnimTable_SandFootprints, gFieldEffectObjectPicTable_SandFootprints, gDummySpriteAffineAnimTable, sub_8154C60};
+const struct SpriteTemplate gFieldEffectObjectTemplate_SandFootprints = {0xFFFF, 0x1004, &gEventObjectBaseOam_16x16, gFieldEffectObjectImageAnimTable_SandFootprints, gFieldEffectObjectPicTable_SandFootprints, gDummySpriteAffineAnimTable, UpdateFootprintsTireTracksFieldEffect};
 
 const struct SpriteFrameImage gFieldEffectObjectPicTable_DeepSandFootprints[] = {
     overworld_frame(gFieldEffectObjectPic_DeepSandFootprints, 2, 2, 0),
@@ -329,7 +329,7 @@ const union AnimCmd *const gFieldEffectObjectImageAnimTable_DeepSandFootprints[]
     gFieldEffectObjectImageAnim_850CD8C,
 };
 
-const struct SpriteTemplate gFieldEffectObjectTemplate_DeepSandFootprints = {0xFFFF, 0x1004, &gEventObjectBaseOam_16x16, gFieldEffectObjectImageAnimTable_DeepSandFootprints, gFieldEffectObjectPicTable_DeepSandFootprints, gDummySpriteAffineAnimTable, sub_8154C60};
+const struct SpriteTemplate gFieldEffectObjectTemplate_DeepSandFootprints = {0xFFFF, 0x1004, &gEventObjectBaseOam_16x16, gFieldEffectObjectImageAnimTable_DeepSandFootprints, gFieldEffectObjectPicTable_DeepSandFootprints, gDummySpriteAffineAnimTable, UpdateFootprintsTireTracksFieldEffect};
 
 const struct SpriteFrameImage gFieldEffectObjectPicTable_BikeTireTracks[] = {
     overworld_frame(gFieldEffectObjectPic_BikeTireTracks, 2, 2, 0),
@@ -399,7 +399,7 @@ const union AnimCmd *const gFieldEffectObjectImageAnimTable_BikeTireTracks[] =
     gFieldEffectObjectImageAnim_850CE18,
 };
 
-const struct SpriteTemplate gFieldEffectObjectTemplate_BikeTireTracks = {0xFFFF, 0x1004, &gEventObjectBaseOam_16x16, gFieldEffectObjectImageAnimTable_BikeTireTracks, gFieldEffectObjectPicTable_BikeTireTracks, gDummySpriteAffineAnimTable, sub_8154C60};
+const struct SpriteTemplate gFieldEffectObjectTemplate_BikeTireTracks = {0xFFFF, 0x1004, &gEventObjectBaseOam_16x16, gFieldEffectObjectImageAnimTable_BikeTireTracks, gFieldEffectObjectPicTable_BikeTireTracks, gDummySpriteAffineAnimTable, UpdateFootprintsTireTracksFieldEffect};
 
 const struct SpriteFrameImage gFieldEffectObjectPicTable_BikeHopBigSplash[] = {
     overworld_frame(gFieldEffectObjectPic_BikeHopBigSplash, 2, 2, 0),
@@ -455,7 +455,7 @@ const union AnimCmd *const gFieldEffectObjectImageAnimTable_Splash[] =
     gFieldEffectObjectImageAnim_850CEC8,
 };
 
-const struct SpriteTemplate gFieldEffectObjectTemplate_Splash = {0xFFFF, 0x1004, &gEventObjectBaseOam_16x8, gFieldEffectObjectImageAnimTable_Splash, gFieldEffectObjectPicTable_Splash, gDummySpriteAffineAnimTable, sub_8154D90};
+const struct SpriteTemplate gFieldEffectObjectTemplate_Splash = {0xFFFF, 0x1004, &gEventObjectBaseOam_16x8, gFieldEffectObjectImageAnimTable_Splash, gFieldEffectObjectPicTable_Splash, gDummySpriteAffineAnimTable, UpdateSplashFieldEffect};
 
 const struct SpriteFrameImage gFieldEffectObjectPicTable_BikeHopSmallSplash[] = {
     overworld_frame(gFieldEffectObjectPic_BikeHopSmallSplash, 2, 1, 0),
@@ -502,7 +502,7 @@ const union AnimCmd *const gFieldEffectObjectImageAnimTable_LongGrass[] =
     gFieldEffectObjectImageAnim_850CF70,
 };
 
-const struct SpriteTemplate gFieldEffectObjectTemplate_LongGrass = {0xFFFF, 0x1005, &gEventObjectBaseOam_16x16, gFieldEffectObjectImageAnimTable_LongGrass, gFieldEffectObjectPicTable_LongGrass, gDummySpriteAffineAnimTable, unc_grass_tall};
+const struct SpriteTemplate gFieldEffectObjectTemplate_LongGrass = {0xFFFF, 0x1005, &gEventObjectBaseOam_16x16, gFieldEffectObjectImageAnimTable_LongGrass, gFieldEffectObjectPicTable_LongGrass, gDummySpriteAffineAnimTable, UpdateLongGrassFieldEffect};
 
 const struct SpriteFrameImage gFieldEffectObjectPicTable_Unknown16[] = {
     overworld_frame(gFieldEffectObjectPic_Unknown16, 2, 2, 0),
@@ -631,7 +631,7 @@ const union AnimCmd *const gFieldEffectObjectImageAnimTable_Unknown29[] =
     gFieldEffectObjectImageAnim_850D160,
 };
 
-const struct SpriteTemplate gFieldEffectObjectTemplate_Unknown29 = {0xFFFF, 0x1004, &gEventObjectBaseOam_16x8, gFieldEffectObjectImageAnimTable_Unknown29, gFieldEffectObjectPicTable_Unknown29, gDummySpriteAffineAnimTable, sub_81559BC};
+const struct SpriteTemplate gFieldEffectObjectTemplate_Unknown29 = {0xFFFF, 0x1004, &gEventObjectBaseOam_16x8, gFieldEffectObjectImageAnimTable_Unknown29, gFieldEffectObjectPicTable_Unknown29, gDummySpriteAffineAnimTable, UpdateSandPileFieldEffect};
 
 const struct SpriteFrameImage gFieldEffectObjectPicTable_Unknown20[] = {
     overworld_frame(gFieldEffectObjectPic_Unknown20, 2, 2, 0),
@@ -769,7 +769,7 @@ const union AnimCmd *const gFieldEffectObjectImageAnimTable_TreeDisguise[] =
     gFieldEffectObjectImageAnim_850D384,
 };
 
-const struct SpriteTemplate gFieldEffectObjectTemplate_TreeDisguise = {0xFFFF, 0xFFFF, &gEventObjectBaseOam_16x32, gFieldEffectObjectImageAnimTable_TreeDisguise, gFieldEffectObjectPicTable_TreeDisguise, gDummySpriteAffineAnimTable, sub_8155C88};
+const struct SpriteTemplate gFieldEffectObjectTemplate_TreeDisguise = {0xFFFF, 0xFFFF, &gEventObjectBaseOam_16x32, gFieldEffectObjectImageAnimTable_TreeDisguise, gFieldEffectObjectPicTable_TreeDisguise, gDummySpriteAffineAnimTable, UpdateDisguiseFieldEffect};
 
 const struct SpriteFrameImage gFieldEffectObjectPicTable_MountainDisguise[] = {
     overworld_frame(gFieldEffectObjectPic_MountainDisguise, 2, 4, 0),
@@ -805,7 +805,7 @@ const union AnimCmd *const gFieldEffectObjectImageAnimTable_MountainDisguise[] =
     gFieldEffectObjectImageAnim_850D404,
 };
 
-const struct SpriteTemplate gFieldEffectObjectTemplate_MountainDisguise = {0xFFFF, 0xFFFF, &gEventObjectBaseOam_16x32, gFieldEffectObjectImageAnimTable_MountainDisguise, gFieldEffectObjectPicTable_MountainDisguise, gDummySpriteAffineAnimTable, sub_8155C88};
+const struct SpriteTemplate gFieldEffectObjectTemplate_MountainDisguise = {0xFFFF, 0xFFFF, &gEventObjectBaseOam_16x32, gFieldEffectObjectImageAnimTable_MountainDisguise, gFieldEffectObjectPicTable_MountainDisguise, gDummySpriteAffineAnimTable, UpdateDisguiseFieldEffect};
 
 const struct SpriteFrameImage gFieldEffectObjectPicTable_SandDisguisePlaceholder[] = {
     overworld_frame(gFieldEffectObjectPic_SandDisguisePlaceholder, 2, 4, 0),
@@ -817,7 +817,7 @@ const struct SpriteFrameImage gFieldEffectObjectPicTable_SandDisguisePlaceholder
     overworld_frame(gFieldEffectObjectPic_SandDisguisePlaceholder, 2, 4, 6),
 };
 
-const struct SpriteTemplate gFieldEffectObjectTemplate_SandDisguisePlaceholder = {0xFFFF, 0xFFFF, &gEventObjectBaseOam_16x32, gFieldEffectObjectImageAnimTable_TreeDisguise, gFieldEffectObjectPicTable_SandDisguisePlaceholder, gDummySpriteAffineAnimTable, sub_8155C88};
+const struct SpriteTemplate gFieldEffectObjectTemplate_SandDisguisePlaceholder = {0xFFFF, 0xFFFF, &gEventObjectBaseOam_16x32, gFieldEffectObjectImageAnimTable_TreeDisguise, gFieldEffectObjectPicTable_SandDisguisePlaceholder, gDummySpriteAffineAnimTable, UpdateDisguiseFieldEffect};
 
 const struct SpriteFrameImage gFieldEffectObjectPicTable_Bird[] = {
     obj_frame_tiles(gFieldEffectObjectPic_Bird),
@@ -853,7 +853,7 @@ const union AnimCmd *const gFieldEffectObjectImageAnimTable_ShortGrass[] =
     gFieldEffectObjectImageAnim_850D4D0,
 };
 
-const struct SpriteTemplate gFieldEffectObjectTemplate_ShortGrass = {0xFFFF, 0x1005, &gEventObjectBaseOam_16x16, gFieldEffectObjectImageAnimTable_ShortGrass, gFieldEffectObjectPicTable_ShortGrass, gDummySpriteAffineAnimTable, sub_8154A10};
+const struct SpriteTemplate gFieldEffectObjectTemplate_ShortGrass = {0xFFFF, 0x1005, &gEventObjectBaseOam_16x16, gFieldEffectObjectImageAnimTable_ShortGrass, gFieldEffectObjectPicTable_ShortGrass, gDummySpriteAffineAnimTable, UpdateShortGrassFieldEffect};
 
 const struct SpriteFrameImage gFieldEffectObjectPicTable_HotSpringsWater[] = {
     obj_frame_tiles(gFieldEffectObjectPic_HotSpringsWater),
@@ -870,7 +870,7 @@ const union AnimCmd *const gFieldEffectObjectImageAnimTable_HotSpringsWater[] =
     gFieldEffectObjectImageAnim_850D500,
 };
 
-const struct SpriteTemplate gFieldEffectObjectTemplate_HotSpringsWater = {0xFFFF, 0x1005, &gEventObjectBaseOam_16x16, gFieldEffectObjectImageAnimTable_HotSpringsWater, gFieldEffectObjectPicTable_HotSpringsWater, gDummySpriteAffineAnimTable, sub_8155158};
+const struct SpriteTemplate gFieldEffectObjectTemplate_HotSpringsWater = {0xFFFF, 0x1005, &gEventObjectBaseOam_16x16, gFieldEffectObjectImageAnimTable_HotSpringsWater, gFieldEffectObjectPicTable_HotSpringsWater, gDummySpriteAffineAnimTable, UpdateHotSpringsWaterFieldEffect};
 
 const struct SpriteFrameImage gFieldEffectObjectPicTable_JumpOutOfAsh[] = {
     overworld_frame(gFieldEffectObjectPic_JumpOutOfAsh, 2, 2, 0),
@@ -953,7 +953,7 @@ const union AnimCmd *const gFieldEffectObjectImageAnimTable_Bubbles[] =
     gFieldEffectObjectImageAnim_850D624,
 };
 
-const struct SpriteTemplate gFieldEffectObjectTemplate_Bubbles = {0xFFFF, 0x1004, &gEventObjectBaseOam_16x32, gFieldEffectObjectImageAnimTable_Bubbles, gFieldEffectObjectPicTable_Bubbles, gDummySpriteAffineAnimTable, sub_8155AEC};
+const struct SpriteTemplate gFieldEffectObjectTemplate_Bubbles = {0xFFFF, 0x1004, &gEventObjectBaseOam_16x32, gFieldEffectObjectImageAnimTable_Bubbles, gFieldEffectObjectPicTable_Bubbles, gDummySpriteAffineAnimTable, UpdateBubblesFieldEffect};
 
 const struct SpriteFrameImage gFieldEffectObjectPicTable_Unknown35[] = {
     overworld_frame(gFieldEffectObjectPic_Unknown35, 2, 2, 0),
@@ -973,7 +973,7 @@ const union AnimCmd *const gFieldEffectObjectImageAnimTable_Unknown35[] =
     gFieldEffectObjectImageAnim_850D674,
 };
 
-const struct SpriteTemplate gFieldEffectObjectTemplate_Unknown35 = {0xFFFF, 0x100F, &gEventObjectBaseOam_16x16, gFieldEffectObjectImageAnimTable_Unknown35, gFieldEffectObjectPicTable_Unknown35, gDummySpriteAffineAnimTable, sub_8155E50};
+const struct SpriteTemplate gFieldEffectObjectTemplate_Unknown35 = {0xFFFF, 0x100F, &gEventObjectBaseOam_16x16, gFieldEffectObjectImageAnimTable_Unknown35, gFieldEffectObjectPicTable_Unknown35, gDummySpriteAffineAnimTable, UpdateSparkleFieldEffect};
 
 const struct SpritePalette gFieldEffectObjectPaletteInfo3 = {gFieldEffectObjectPalette3, 0x100F};
 
diff --git a/src/event_object_movement.c b/src/event_object_movement.c
index 0714cf3b0..a11ee8111 100644
--- a/src/event_object_movement.c
+++ b/src/event_object_movement.c
@@ -1868,7 +1868,7 @@ static void sub_808E1B8(u8 eventObjectId, s16 x, s16 y)
         if (eventObject->movementType == 0x0b)
         {
             SetPlayerAvatarEventObjectIdAndObjectId(eventObjectId, spriteId);
-            eventObject->warpArrowSpriteId = sub_8154228();
+            eventObject->warpArrowSpriteId = CreateWarpArrowSprite();
         }
         if (subspriteTables != NULL)
         {
@@ -8206,7 +8206,7 @@ void GroundEffect_JumpOnTallGrass(struct EventObject *eventObj, struct Sprite *s
     gFieldEffectArguments[3] = 2;
     FieldEffectStart(FLDEFF_JUMP_TALL_GRASS);
 
-    spriteId = sub_81546C8(
+    spriteId = FindTallGrassFieldEffectSpriteId(
         eventObj->localId, eventObj->mapNum, eventObj->mapGroup, eventObj->currentCoords.x, eventObj->currentCoords.y);
 
     if (spriteId == MAX_SPRITES)
@@ -8843,14 +8843,14 @@ void sub_8097B78(u8 var1, u8 var2)
         StartSpriteAnim(&gSprites[spriteId], GetFaceDirectionAnimNum(var2));
 }
 
-void sub_8097BB4(u8 var1, u8 var2)
+void sub_8097BB4(u8 var1, u8 graphicsId)
 {
     int spriteId = sub_8097B2C(var1);
 
     if(spriteId != MAX_SPRITES)
     {
         struct Sprite *sprite = &gSprites[spriteId];
-        const struct EventObjectGraphicsInfo *gfxInfo = GetEventObjectGraphicsInfo(var2);
+        const struct EventObjectGraphicsInfo *gfxInfo = GetEventObjectGraphicsInfo(graphicsId);
         u16 tileNum = sprite->oam.tileNum;
 
         sprite->oam = *gfxInfo->oam;
diff --git a/src/field_effect_helpers.c b/src/field_effect_helpers.c
index 304f7a6f9..3534e0a71 100755
--- a/src/field_effect_helpers.c
+++ b/src/field_effect_helpers.c
@@ -1,28 +1,30 @@
 #include "global.h"
-#include "sprite.h"
-#include "fieldmap.h"
-#include "metatile_behavior.h"
-#include "sound.h"
 #include "event_object_movement.h"
 #include "field_camera.h"
-#include "field_weather.h"
 #include "field_effect.h"
 #include "field_effect_helpers.h"
-#include "constants/songs.h"
+#include "field_weather.h"
+#include "fieldmap.h"
 #include "gpu_regs.h"
+#include "metatile_behavior.h"
+#include "sound.h"
+#include "sprite.h"
 #include "trig.h"
+#include "constants/songs.h"
+
+#define EVENT_OBJ_PAL_TAG_NONE 0x11FF // duplicate of define in event_object_movement.c
 
-void objc_reflection_maybe(struct Sprite *);
-void npc_pal_op(struct EventObject *eventObject, struct Sprite *sprite);
-void npc_pal_op_A(struct EventObject *, u8);
-void npc_pal_op_B(struct EventObject *, u8);
+void UpdateObjectReflectionSprite(struct Sprite *);
+void LoadObjectReflectionPalette(struct EventObject *eventObject, struct Sprite *sprite);
+void LoadObjectHighBridgeReflectionPalette(struct EventObject *, u8);
+void LoadObjectRegularReflectionPalette(struct EventObject *, u8);
 void sub_81561FC(struct Sprite *, u8, u8);
-void sub_8154C7C(struct Sprite *);
-void sub_8154CA0(struct Sprite *);
-void sub_8154FB4(struct Sprite *);
-void sub_815547C(struct Sprite *);
-void sub_81554AC(struct Sprite *);
-void sub_815550C(struct Sprite *);
+void FadeFootprintsTireTracks_Step0(struct Sprite *);
+void FadeFootprintsTireTracks_Step1(struct Sprite *);
+void UpdateFeetInFlowingWaterFieldEffect(struct Sprite *);
+void UpdateAshFieldEffect_Step0(struct Sprite *);
+void UpdateAshFieldEffect_Step1(struct Sprite *);
+void UpdateAshFieldEffect_Step2(struct Sprite *);
 void sub_81556B0(struct EventObject *, struct Sprite *);
 void sub_81556E8(struct EventObject *, struct Sprite *);
 void sub_815577C(struct EventObject *, struct Sprite *, struct Sprite *);
@@ -34,7 +36,7 @@ void SetUpReflection(struct EventObject *eventObject, struct Sprite *sprite, boo
     struct Sprite *reflectionSprite;
 
     reflectionSprite = &gSprites[CreateCopySpriteAt(sprite, sprite->pos1.x, sprite->pos1.y, 0x98)];
-    reflectionSprite->callback = objc_reflection_maybe;
+    reflectionSprite->callback = UpdateObjectReflectionSprite;
     reflectionSprite->oam.priority = 3;
     reflectionSprite->oam.paletteNum = gReflectionEffectPaletteMap[reflectionSprite->oam.paletteNum];
     reflectionSprite->usingSheet = TRUE;
@@ -46,18 +48,18 @@ void SetUpReflection(struct EventObject *eventObject, struct Sprite *sprite, boo
     reflectionSprite->data[0] = sprite->data[0];
     reflectionSprite->data[1] = eventObject->localId;
     reflectionSprite->data[7] = stillReflection;
-    npc_pal_op(eventObject, reflectionSprite);
+    LoadObjectReflectionPalette(eventObject, reflectionSprite);
 
     if (!stillReflection)
         reflectionSprite->oam.affineMode = ST_OAM_AFFINE_NORMAL;
 }
 
-s16 sub_8153F98(struct EventObject *eventObject)
+static s16 GetReflectionVerticalOffset(struct EventObject *eventObject)
 {
     return GetEventObjectGraphicsInfo(eventObject->graphicsId)->height - 2;
 }
 
-void npc_pal_op(struct EventObject *eventObject, struct Sprite *sprite)
+void LoadObjectReflectionPalette(struct EventObject *eventObject, struct Sprite *sprite)
 {
     u8 bridgeType;
     u16 bridgeReflectionVerticalOffsets[] = { 12, 28, 44 };
@@ -65,20 +67,20 @@ void npc_pal_op(struct EventObject *eventObject, struct Sprite *sprite)
     if (!GetEventObjectGraphicsInfo(eventObject->graphicsId)->disableReflectionPaletteLoad && ((bridgeType = MetatileBehavior_GetBridgeSth(eventObject->previousMetatileBehavior)) || (bridgeType = MetatileBehavior_GetBridgeSth(eventObject->currentMetatileBehavior))))
     {
         sprite->data[2] = bridgeReflectionVerticalOffsets[bridgeType - 1];
-        npc_pal_op_A(eventObject, sprite->oam.paletteNum);
+        LoadObjectHighBridgeReflectionPalette(eventObject, sprite->oam.paletteNum);
     }
     else
     {
-        npc_pal_op_B(eventObject, sprite->oam.paletteNum);
+        LoadObjectRegularReflectionPalette(eventObject, sprite->oam.paletteNum);
     }
 }
 
-void npc_pal_op_B(struct EventObject *eventObject, u8 paletteIndex)
+void LoadObjectRegularReflectionPalette(struct EventObject *eventObject, u8 paletteIndex)
 {
     const struct EventObjectGraphicsInfo *graphicsInfo;
 
     graphicsInfo = GetEventObjectGraphicsInfo(eventObject->graphicsId);
-    if (graphicsInfo->paletteTag2 != 0x11ff)
+    if (graphicsInfo->paletteTag2 != EVENT_OBJ_PAL_TAG_NONE)
     {
         if (graphicsInfo->paletteSlot == 0)
         {
@@ -98,19 +100,19 @@ void npc_pal_op_B(struct EventObject *eventObject, u8 paletteIndex)
 
 // When walking on a bridge high above water (Route 120), the reflection is a solid dark blue color.
 // This is so the sprite blends in with the dark water metatile underneath the bridge.
-void npc_pal_op_A(struct EventObject *eventObject, u8 paletteNum)
+void LoadObjectHighBridgeReflectionPalette(struct EventObject *eventObject, u8 paletteNum)
 {
     const struct EventObjectGraphicsInfo *graphicsInfo;
 
     graphicsInfo = GetEventObjectGraphicsInfo(eventObject->graphicsId);
-    if (graphicsInfo->paletteTag2 != 0x11ff)
+    if (graphicsInfo->paletteTag2 != EVENT_OBJ_PAL_TAG_NONE)
     {
         PatchObjectPalette(graphicsInfo->paletteTag2, paletteNum);
         UpdateSpritePaletteWithWeather(paletteNum);
     }
 }
 
-void objc_reflection_maybe(struct Sprite *reflectionSprite)
+void UpdateObjectReflectionSprite(struct Sprite *reflectionSprite)
 {
     struct EventObject *eventObject;
     struct Sprite *mainSprite;
@@ -133,7 +135,7 @@ void objc_reflection_maybe(struct Sprite *reflectionSprite)
         reflectionSprite->invisible = mainSprite->invisible;
         reflectionSprite->pos1.x = mainSprite->pos1.x;
         // reflectionSprite->data[2] holds an additional vertical offset, used by the high bridges on Route 120
-        reflectionSprite->pos1.y = mainSprite->pos1.y + sub_8153F98(eventObject) + reflectionSprite->data[2];
+        reflectionSprite->pos1.y = mainSprite->pos1.y + GetReflectionVerticalOffset(eventObject) + reflectionSprite->data[2];
         reflectionSprite->centerToCornerVecX = mainSprite->centerToCornerVecX;
         reflectionSprite->centerToCornerVecY = mainSprite->centerToCornerVecY;
         reflectionSprite->pos2.x = mainSprite->pos2.x;
@@ -158,7 +160,7 @@ void objc_reflection_maybe(struct Sprite *reflectionSprite)
 
 extern const struct SpriteTemplate *const gFieldEffectObjectTemplatePointers[];
 
-u8 sub_8154228(void)
+u8 CreateWarpArrowSprite(void)
 {
     u8 spriteId;
     struct Sprite *sprite;
@@ -174,12 +176,12 @@ u8 sub_8154228(void)
     return spriteId;
 }
 
-void objid_set_invisible(u8 spriteId)
+void SetSpriteInvisible(u8 spriteId)
 {
     gSprites[spriteId].invisible = TRUE;
 }
 
-void sub_8154298(u8 spriteId, u8 direction, s16 x, s16 y)
+void ShowWarpArrowSprite(u8 spriteId, u8 direction, s16 x, s16 y)
 {
     s16 x2;
     s16 y2;
@@ -213,7 +215,7 @@ const u16 gShadowVerticalOffsets[] = {
     16
 };
 
-u32 oei_shadow(void)
+u32 FldEff_Shadow(void)
 {
     u8 eventObjectId;
     const struct EventObjectGraphicsInfo *graphicsInfo;
@@ -233,7 +235,7 @@ u32 oei_shadow(void)
     return 0;
 }
 
-void oamc_shadow(struct Sprite *sprite)
+void UpdateShadowFieldEffect(struct Sprite *sprite)
 {
     u8 eventObjectId;
     struct EventObject *eventObject;
@@ -262,7 +264,7 @@ void oamc_shadow(struct Sprite *sprite)
     }
 }
 
-u32 oei_grass_normal(void)
+u32 FldEff_TallGrass(void)
 {
     s16 x;
     s16 y;
@@ -292,7 +294,7 @@ u32 oei_grass_normal(void)
     return 0;
 }
 
-void unc_grass_normal(struct Sprite *sprite)
+void UpdateTallGrassFieldEffect(struct Sprite *sprite)
 {
     u8 mapNum;
     u8 mapGroup;
@@ -332,7 +334,7 @@ void unc_grass_normal(struct Sprite *sprite)
     }
 }
 
-u32 sub_8154658(void)
+u32 FldEff_JumpTallGrass(void)
 {
     u8 spriteId;
     struct Sprite *sprite;
@@ -350,7 +352,7 @@ u32 sub_8154658(void)
     return 0;
 }
 
-u8 sub_81546C8(u8 localId, u8 mapNum, u8 mapGroup, s16 x, s16 y)
+u8 FindTallGrassFieldEffectSpriteId(u8 localId, u8 mapNum, u8 mapGroup, s16 x, s16 y)
 {
     struct Sprite *sprite;
     u8 i;
@@ -360,7 +362,7 @@ u8 sub_81546C8(u8 localId, u8 mapNum, u8 mapGroup, s16 x, s16 y)
         if (gSprites[i].inUse)
         {
             sprite = &gSprites[i];
-            if (sprite->callback == unc_grass_normal && (x == sprite->data[1] && y == sprite->data[2]) && (localId == (u8)(sprite->data[3] >> 8) && mapNum == (sprite->data[3] & 0xFF) && mapGroup == sprite->data[4]))
+            if (sprite->callback == UpdateTallGrassFieldEffect && (x == sprite->data[1] && y == sprite->data[2]) && (localId == (u8)(sprite->data[3] >> 8) && mapNum == (sprite->data[3] & 0xFF) && mapGroup == sprite->data[4]))
                 return i;
         }
     }
@@ -368,7 +370,7 @@ u8 sub_81546C8(u8 localId, u8 mapNum, u8 mapGroup, s16 x, s16 y)
     return MAX_SPRITES;
 }
 
-u32 sub_8154758(void)
+u32 FldEff_LongGrass(void)
 {
     s16 x;
     s16 y;
@@ -398,7 +400,7 @@ u32 sub_8154758(void)
     return 0;
 }
 
-void unc_grass_tall(struct Sprite *sprite)
+void UpdateLongGrassFieldEffect(struct Sprite *sprite)
 {
     u8 mapNum;
     u8 mapGroup;
@@ -435,7 +437,7 @@ void unc_grass_tall(struct Sprite *sprite)
     }
 }
 
-u32 sub_81548FC(void)
+u32 FldEff_JumpLongGrass(void)
 {
     u8 spriteId;
     struct Sprite *sprite;
@@ -453,7 +455,7 @@ u32 sub_81548FC(void)
     return 0;
 }
 
-u32 sub_815496C(void)
+u32 FldEff_ShortGrass(void)
 {
     u8 eventObjectId;
     struct EventObject *eventObject;
@@ -477,7 +479,7 @@ u32 sub_815496C(void)
     return 0;
 }
 
-void sub_8154A10(struct Sprite *sprite)
+void UpdateShortGrassFieldEffect(struct Sprite *sprite)
 {
     u8 eventObjectId;
     s16 x;
@@ -513,7 +515,7 @@ void sub_8154A10(struct Sprite *sprite)
     }
 }
 
-u32 sub_8154B04(void)
+u32 FldEff_SandFootprints(void)
 {
     u8 spriteId;
     struct Sprite *sprite;
@@ -531,7 +533,7 @@ u32 sub_8154B04(void)
     return 0;
 }
 
-u32 sub_8154B78(void)
+u32 FldEff_DeepSandFootprints(void)
 {
     u8 spriteId;
     struct Sprite *sprite;
@@ -549,7 +551,7 @@ u32 sub_8154B78(void)
     return spriteId;
 }
 
-u32 sub_8154BEC(void)
+u32 FldEff_BikeTireTracks(void)
 {
     u8 spriteId;
     struct Sprite *sprite;
@@ -568,16 +570,16 @@ u32 sub_8154BEC(void)
 }
 
 void (*const gFadeFootprintsTireTracksFuncs[])(struct Sprite *) = {
-    sub_8154C7C,
-    sub_8154CA0
+    FadeFootprintsTireTracks_Step0,
+    FadeFootprintsTireTracks_Step1
 };
 
-void sub_8154C60(struct Sprite *sprite)
+void UpdateFootprintsTireTracksFieldEffect(struct Sprite *sprite)
 {
     gFadeFootprintsTireTracksFuncs[sprite->data[0]](sprite);
 }
 
-void sub_8154C7C(struct Sprite *sprite)
+void FadeFootprintsTireTracks_Step0(struct Sprite *sprite)
 {
     // Wait 40 frames before the flickering starts.
     if (++sprite->data[1] > 40)
@@ -586,7 +588,7 @@ void sub_8154C7C(struct Sprite *sprite)
     UpdateEventObjectSpriteVisibility(sprite, FALSE);
 }
 
-void sub_8154CA0(struct Sprite *sprite)
+void FadeFootprintsTireTracks_Step1(struct Sprite *sprite)
 {
     sprite->invisible ^= 1;
     sprite->data[1]++;
@@ -597,7 +599,7 @@ void sub_8154CA0(struct Sprite *sprite)
     }
 }
 
-u32 sub_8154CEC(void)
+u32 FldEff_Splash(void)
 {
     u8 eventObjectId;
     struct EventObject *eventObject;
@@ -625,7 +627,7 @@ u32 sub_8154CEC(void)
     return 0;
 }
 
-void sub_8154D90(struct Sprite *sprite)
+void UpdateSplashFieldEffect(struct Sprite *sprite)
 {
     u8 eventObjectId;
 
@@ -641,7 +643,7 @@ void sub_8154D90(struct Sprite *sprite)
     }
 }
 
-u32 sub_8154E1C(void)
+u32 FldEff_JumpSmallSplash(void)
 {
     u8 spriteId;
     struct Sprite *sprite;
@@ -659,7 +661,7 @@ u32 sub_8154E1C(void)
     return 0;
 }
 
-u32 oei_water_drop_tall(void)
+u32 FldEff_JumpBigSplash(void)
 {
     u8 spriteId;
     struct Sprite *sprite;
@@ -677,7 +679,7 @@ u32 oei_water_drop_tall(void)
     return 0;
 }
 
-u32 sub_8154EFC(void)
+u32 FldEff_FeetInFlowingWater(void)
 {
     u8 eventObjectId;
     struct EventObject *eventObject;
@@ -692,7 +694,7 @@ u32 sub_8154EFC(void)
     {
         graphicsInfo = GetEventObjectGraphicsInfo(eventObject->graphicsId);
         sprite = &gSprites[spriteId];
-        sprite->callback = sub_8154FB4;
+        sprite->callback = UpdateFeetInFlowingWaterFieldEffect;
         sprite->coordOffsetEnabled = TRUE;
         sprite->oam.priority = gSprites[eventObject->spriteId].oam.priority;
         sprite->data[0] = gFieldEffectArguments[0];
@@ -706,7 +708,7 @@ u32 sub_8154EFC(void)
     return 0;
 }
 
-void sub_8154FB4(struct Sprite *sprite)
+void UpdateFeetInFlowingWaterFieldEffect(struct Sprite *sprite)
 {
     u8 eventObjectId;
     struct Sprite *linkedSprite;
@@ -736,7 +738,7 @@ void sub_8154FB4(struct Sprite *sprite)
     }
 }
 
-u32 oei_ripples(void)
+u32 FldEff_Ripple(void)
 {
     u8 spriteId;
     struct Sprite *sprite;
@@ -752,7 +754,7 @@ u32 oei_ripples(void)
     return 0;
 }
 
-u32 sub_81550B4(void)
+u32 FldEff_HotSpringsWater(void)
 {
     u8 eventObjectId;
     struct EventObject *eventObject;
@@ -776,7 +778,7 @@ u32 sub_81550B4(void)
     return 0;
 }
 
-void sub_8155158(struct Sprite *sprite)
+void UpdateHotSpringsWaterFieldEffect(struct Sprite *sprite)
 {
     u8 eventObjectId;
     const struct EventObjectGraphicsInfo *graphicsInfo;
@@ -797,7 +799,7 @@ void sub_8155158(struct Sprite *sprite)
     }
 }
 
-u32 sub_81551F0(void)
+u32 FldEff_Unknown19(void)
 {
     u8 spriteId;
     struct Sprite *sprite;
@@ -814,7 +816,7 @@ u32 sub_81551F0(void)
     return 0;
 }
 
-u32 sub_815525C(void)
+u32 FldEff_Unknown20(void)
 {
     u8 spriteId;
     struct Sprite *sprite;
@@ -831,7 +833,7 @@ u32 sub_815525C(void)
     return 0;
 }
 
-u32 sub_81552C8(void)
+u32 FldEff_Unknown21(void)
 {
     u8 spriteId;
     struct Sprite *sprite;
@@ -848,7 +850,7 @@ u32 sub_81552C8(void)
     return 0;
 }
 
-u32 sub_8155334(void)
+u32 FldEff_Unknown22(void)
 {
     u8 spriteId;
     struct Sprite *sprite;
@@ -865,7 +867,7 @@ u32 sub_8155334(void)
     return 0;
 }
 
-void ash(s16 x, s16 y, u16 c, s16 d)
+void StartAshFieldEffect(s16 x, s16 y, u16 c, s16 d)
 {
     gFieldEffectArguments[0] = x;
     gFieldEffectArguments[1] = y;
@@ -876,7 +878,7 @@ void ash(s16 x, s16 y, u16 c, s16 d)
     FieldEffectStart(FLDEFF_ASH);
 }
 
-u32 oei_ash(void)
+u32 FldEff_Ash(void)
 {
     s16 x;
     s16 y;
@@ -901,17 +903,17 @@ u32 oei_ash(void)
 }
 
 void (*const gAshFieldEffectFuncs[])(struct Sprite *) = {
-    sub_815547C,
-    sub_81554AC,
-    sub_815550C
+    UpdateAshFieldEffect_Step0,
+    UpdateAshFieldEffect_Step1,
+    UpdateAshFieldEffect_Step2
 };
 
-void sub_8155460(struct Sprite *sprite)
+void UpdateAshFieldEffect(struct Sprite *sprite)
 {
     gAshFieldEffectFuncs[sprite->data[0]](sprite);
 }
 
-void sub_815547C(struct Sprite *sprite)
+void UpdateAshFieldEffect_Step0(struct Sprite *sprite)
 {
     sprite->invisible = TRUE;
     sprite->animPaused = TRUE;
@@ -919,7 +921,7 @@ void sub_815547C(struct Sprite *sprite)
         sprite->data[0] = 1;
 }
 
-void sub_81554AC(struct Sprite *sprite)
+void UpdateAshFieldEffect_Step1(struct Sprite *sprite)
 {
     sprite->invisible = FALSE;
     sprite->animPaused = FALSE;
@@ -929,14 +931,14 @@ void sub_81554AC(struct Sprite *sprite)
     sprite->data[0] = 2;
 }
 
-void sub_815550C(struct Sprite *sprite)
+void UpdateAshFieldEffect_Step2(struct Sprite *sprite)
 {
     UpdateEventObjectSpriteVisibility(sprite, FALSE);
     if (sprite->animEnded)
         FieldEffectStop(sprite, FLDEFF_ASH);
 }
 
-u32 sub_8155534(void)
+u32 FldEff_SurfBlob(void)
 {
     u8 spriteId;
     struct Sprite *sprite;
@@ -988,7 +990,7 @@ u8 sub_815564C(struct Sprite *sprite)
     return (sprite->data[0] & 0xF00) >> 8;
 }
 
-void sub_8155658(struct Sprite *sprite)
+void UpdateSurfBlobFieldEffect(struct Sprite *sprite)
 {
     struct EventObject *eventObject;
     struct Sprite *linkedSprite;
@@ -1179,7 +1181,7 @@ void sub_8155850(struct Sprite *sprite)
     }
 }
 
-u32 sub_8155890(void)
+u32 FldEff_Dust(void)
 {
     u8 spriteId;
     struct Sprite *sprite;
@@ -1197,7 +1199,7 @@ u32 sub_8155890(void)
     return 0;
 }
 
-u32 sub_8155900(void)
+u32 FldEff_SandPile(void)
 {
     u8 eventObjectId;
     struct EventObject *eventObject;
@@ -1225,7 +1227,7 @@ u32 sub_8155900(void)
     return 0;
 }
 
-void sub_81559BC(struct Sprite *sprite)
+void UpdateSandPileFieldEffect(struct Sprite *sprite)
 {
     u8 eventObjectId;
     s16 x;
@@ -1255,7 +1257,7 @@ void sub_81559BC(struct Sprite *sprite)
     }
 }
 
-u32 sub_8155A88(void)
+u32 FldEff_Bubbles(void)
 {
     u8 spriteId;
     struct Sprite *sprite;
@@ -1271,7 +1273,7 @@ u32 sub_8155A88(void)
     return 0;
 }
 
-void sub_8155AEC(struct Sprite *sprite)
+void UpdateBubblesFieldEffect(struct Sprite *sprite)
 {
     sprite->data[0] += 0x80;
     sprite->data[0] &= 0x100;
@@ -1283,7 +1285,7 @@ void sub_8155AEC(struct Sprite *sprite)
     }
 }
 
-u32 sub_8155B2C(void)
+u32 FldEff_BerryTreeGrowthSparkle(void)
 {
     u8 spriteId;
     struct Sprite *sprite;
@@ -1342,7 +1344,7 @@ u32 ShowDisguiseFieldEffect(u8 fldEff, u8 templateIdx, u8 paletteNum)
     return spriteId;
 }
 
-void sub_8155C88(struct Sprite *sprite)
+void UpdateDisguiseFieldEffect(struct Sprite *sprite)
 {
     u8 eventObjectId;
     const struct EventObjectGraphicsInfo *graphicsInfo;
@@ -1404,7 +1406,7 @@ bool8 sub_8155DA0(struct EventObject *eventObject)
     return FALSE;
 }
 
-u32 sub_8155DDC(void)
+u32 FldEff_Sparkle(void)
 {
     u8 spriteId;
 
@@ -1420,7 +1422,7 @@ u32 sub_8155DDC(void)
     return 0;
 }
 
-void sub_8155E50(struct Sprite *sprite)
+void UpdateSparkleFieldEffect(struct Sprite *sprite)
 {
     if (sprite->data[0] == 0)
     {
diff --git a/src/field_tasks.c b/src/field_tasks.c
index fc57585e5..5fb23f536 100644
--- a/src/field_tasks.c
+++ b/src/field_tasks.c
@@ -627,11 +627,11 @@ static void PerStepCallback_8069F64(u8 taskId)
         {
             if (MapGridGetMetatileIdAt(x, y) == 0x20a)
             {
-                ash(x, y, 0x212, 4);
+                StartAshFieldEffect(x, y, 0x212, 4);
             }
             else
             {
-                ash(x, y, 0x206, 4);
+                StartAshFieldEffect(x, y, 0x206, 4);
             }
             if (CheckBagHasItem(ITEM_SOOT_SACK, 1))
             {
diff --git a/src/fldeff_cut.c b/src/fldeff_cut.c
index 9de954e80..5a9181789 100644
--- a/src/fldeff_cut.c
+++ b/src/fldeff_cut.c
@@ -1,26 +1,25 @@
 #include "global.h"
-#include "fldeff_cut.h"
+#include "event_obj_lock.h"
+#include "event_object_movement.h"
 #include "field_camera.h"
 #include "field_effect.h"
-#include "event_object_movement.h"
 #include "field_player_avatar.h"
 #include "fieldmap.h"
-#include "event_obj_lock.h"
+#include "fldeff_cut.h"
+#include "malloc.h"
 #include "metatile_behavior.h"
-#include "party_menu.h"
 #include "overworld.h"
+#include "party_menu.h"
+#include "rom6.h"
 #include "script.h"
 #include "sound.h"
 #include "sprite.h"
 #include "task.h"
 #include "trig.h"
-#include "malloc.h"
+#include "constants/abilities.h"
 #include "constants/event_objects.h"
 #include "constants/songs.h"
-#include "constants/abilities.h"
 
-extern bool8 CheckObjectGraphicsInFrontOfPlayer(u8);
-extern u8 oei_task_add(void);
 extern void ScriptUnfreezeEventObjects(void);
 extern bool8 IsMewPlayingHideAndSeek(void);