diff --git a/papermario/include/common_structs.h b/papermario/include/common_structs.h
index 3eff5cdfc6..f2b26328ba 100644
--- a/papermario/include/common_structs.h
+++ b/papermario/include/common_structs.h
@@ -48,6 +48,62 @@ typedef struct {
     /* 0x168 */ s32 unk_168;
 } game_status;
 
+typedef enum eItemEntityState {
+    CollisionWithPlayer=3,
+    FellBelowWorld=2,
+    Init=0,
+    Initialized=1
+} eItemEntityState;
+
+typedef struct {
+    /* 0x00 */ f32 verticalVelocity;
+    /* 0x04 */ f32 gravity; /* 2 = normal, 1 = low gravity, higher values never 'settle' */
+    /* 0x08 */ f32 field_0x8;
+    /* 0x0C */ f32 constVelocity; /* ? */
+    /* 0x10 */ f32 velx;
+    /* 0x14 */ f32 velz;
+    /* 0x18 */ f32 moveAngle;
+    /* 0x1C */ f32 field_0x1c;
+    /* 0x20 */ f32 field_0x20;
+} item_entity_physics_data;
+
+typedef struct {
+    /* 0x00 */ s32 flags;
+    /* 0x04 */ s16 boundVar; /* see make_item_entity */
+    /* 0x06 */ s16 field_0x6;
+    /* 0x08 */ f32 position[3];
+    /* 0x14 */ struct item_entity_physics_data* physicsData;
+    /* 0x24 */ s16 itemID; /* into item table, also worldIconID */
+    /* 0x1A */ eItemEntityState state;
+    /* 0x1B */ s8 type;
+    /* 0x1C */ s8 pickupDelay; /* num frames before item can be picked up */
+    /* 0x1D */ s8 field_0x1d;
+    /* 0x1E */ s16 wsFaceAngle; /* < 0 means none */
+    /* 0x20 */ s16 shadowIndex;
+    /* 0x22 */ char unk_22[2];
+    /* 0x24 */ u32* readPos;
+    /* 0x28 */ u32 savedReadPos;
+    /* 0x2C */ s8 field_0x2c;
+    /* 0x2D */ s8 field_0x2d;
+    /* 0x2E */ s8 unkCounter;
+    /* 0x2F */ s8 field_0x2f;
+    /* 0x30 */ f32 scale;
+    /* 0x34 */ s16 field_0x34;
+    /* 0x36 */ s16 field_0x36;
+    /* 0x38 */ s16 field_0x38;
+    /* 0x3A */ char unk_3a[2];
+    /* 0x3C */ s32 field_0x3c; /* coin related? timer? state? */
+    /* 0x40 */ s32 field_0x40; /* coin sound related? */
+    /* 0x44 */ char unk_44[4];
+    /* 0x48 */ s32 field_0x48; /* coin sound related? */
+    /* 0x4C */ s32 field_0x4c;
+    /* 0x50 */ s32 field_0x50;
+    /* 0x54 */ char unk_54[2];
+    /* 0x56 */ s16 field_0x56;
+    /* 0x58 */ char unk_58[2];
+    /* 0x5A */ s16 field_0x5a;
+} item_entity;
+
 typedef struct {
     /* 0x00 */ s32 nameString;
     /* 0x04 */ s16 iconID;
diff --git a/papermario/include/functions.h b/papermario/include/functions.h
index 2c21d3691b..c15ad959a3 100644
--- a/papermario/include/functions.h
+++ b/papermario/include/functions.h
@@ -13,4 +13,6 @@ f32 get_float_variable(script_context* script, s32 pos);
 f32 sin_deg(f32 x);
 f32 cos_deg(f32 x);
 
+s32 play_sound_at_position(s32 soundID, s32 value2, f32 posX, f32 posY, f32 posZ);
+
 #endif
diff --git a/papermario/include/variables.h b/papermario/include/variables.h
index 8122d0e6af..bf28b81f71 100644
--- a/papermario/include/variables.h
+++ b/papermario/include/variables.h
@@ -13,12 +13,15 @@ extern s16* D_80151328;
 extern s16 D_8010CD10;
 extern s16 D_8010CD12;
 
-extern u16 mapTransitionAlpha;
+extern u16 gMapTransitionAlpha;
 extern u16 D_800A0942;
 extern s16 D_800A0944;
 
 extern s16 D_80151308;
 
+extern s16 D_8010F304[]; // Key Items
+extern s16 D_8010F444[]; // Items
+
 extern s16 gCurrentDoorSoundsSet;
 
 
diff --git a/papermario/src/code_111f0_len_860.c b/papermario/src/code_111f0_len_860.c
index f550c344f9..4dda7fb0e1 100644
--- a/papermario/src/code_111f0_len_860.c
+++ b/papermario/src/code_111f0_len_860.c
@@ -25,7 +25,7 @@ void func_800360FC(void) {
 void func_80036130(void) {
     game_status* gameStatus = *gGameStatusPtr;
 
-    mapTransitionAlpha = 0x00;
+    gMapTransitionAlpha = 0x00;
     D_800A0942 = 0x14;
     D_800A0944 = 0x00;
 
@@ -52,7 +52,7 @@ s32 func_800363FC(void) {
 s32 func_80036430(void) {
     player_status* pPlayerStatus = &gPlayerStatus;
 
-    mapTransitionAlpha = 0xFF;
+    gMapTransitionAlpha = 0xFF;
     D_800A0942 = 0x14;
     D_800A0944 = 0x01;
     
diff --git a/papermario/src/code_de740_len_23f0.c b/papermario/src/code_de740_len_23f0.c
index 82daaaeda2..fe3710fc01 100644
--- a/papermario/src/code_de740_len_23f0.c
+++ b/papermario/src/code_de740_len_23f0.c
@@ -44,7 +44,7 @@ INCLUDE_ASM(code_de740_len_23f0, play_sound_at_player);
 
 INCLUDE_ASM(code_de740_len_23f0, play_sound_at_npc);
 
-INCLUDE_ASM(code_de740_len_23f0, play_sound_at_position);
+s32 INCLUDE_ASM(code_de740_len_23f0, play_sound_at_position, s32 soundID, s32 value2, f32 posX, f32 posY, f32 posZ);
 
 INCLUDE_ASM(code_de740_len_23f0, func_80149E04);
 
diff --git a/papermario/src/code_fa4c0_len_3bf0.c b/papermario/src/code_fa4c0_len_3bf0.c
index 9daa231a94..5549705359 100644
--- a/papermario/src/code_fa4c0_len_3bf0.c
+++ b/papermario/src/code_fa4c0_len_3bf0.c
@@ -46,8 +46,6 @@ s32 func_802D617C(script_context* script, s32 initialCall) {
     return 2;
 }
 
-INCLUDE_ASM(code_fa4c0_len_3bf0, PlaySoundAt);
-/*
 s32 PlaySoundAt(script_context* script, s32 initialCall) {
     s32* ptrReadPos = script->ptrReadPos;
     s32 soundID = get_variable(script, *ptrReadPos++);
@@ -56,10 +54,9 @@ s32 PlaySoundAt(script_context* script, s32 initialCall) {
     s32 y = get_variable(script, *ptrReadPos++);
     s32 z = get_variable(script, *ptrReadPos++);
 
-    play_sound_at_position(soundID, value2, x, y, z);
+    play_sound_at_position(soundID, value2, (f32) x, (f32) y, (f32) z);
     return 2;
 }
-*/
 
 s32 StopSound(script_context* script, s32 initialCall) {
     s32* ptrReadPos = script->ptrReadPos;
@@ -91,9 +88,24 @@ s32 func_802D6340(script_context* script, s32 initialCall) {
 
 INCLUDE_ASM(code_fa4c0_len_3bf0, PlaySoundAtF);
 
-INCLUDE_ASM(code_fa4c0_len_3bf0, RemoveKeyItemAt);
+s32 RemoveKeyItemAt(script_context* script, s32 initialCall) {
+    s32* ptrReadPos = script->ptrReadPos;
+    s32 index = get_variable(script, *ptrReadPos++);
+    s16* ptrTemp = D_8010F304;
+    ptrTemp[index] = 0;
 
-INCLUDE_ASM(code_fa4c0_len_3bf0, RemoveItemAt);
+    return 2;
+}
+
+s32 RemoveItemAt(script_context* script, s32 initialCall) {
+    s32* ptrReadPos = script->ptrReadPos;
+    s32 index = get_variable(script, *ptrReadPos++);
+    s16* ptrTemp = D_8010F444;
+    ptrTemp[index] = 0;
+
+    sort_items();
+    return 2;
+}
 
 INCLUDE_ASM(code_fa4c0_len_3bf0, AddKeyItem);
 
@@ -142,25 +154,24 @@ s32 AddBadge(script_context* script, s32 initialCall) {
 
 INCLUDE_ASM(code_fa4c0_len_3bf0, RemoveBadge);
 
-INCLUDE_ASM(code_fa4c0_len_3bf0, SetItemPos);
-/*
 s32 SetItemPos(script_context* script, s32 initialCall) {
     s32* ptrReadPos = script->ptrReadPos;
-    s32 itemEntityIndex, value2, value3, value4;
-    s32* ptrItemEntity;
+    item_entity* ptrItemEntity;
+    s32 itemEntityIndex;
+    s32 x, y, z;
 
     itemEntityIndex = get_variable(script, *ptrReadPos++);
-    value2 = get_variable(script, *ptrReadPos++);
-    value3 = get_variable(script, *ptrReadPos++);
-    value4 = get_variable(script, *ptrReadPos++);
+    x = get_variable(script, *ptrReadPos++);
+    y = get_variable(script, *ptrReadPos++);
+    z = get_variable(script, *ptrReadPos++);
 
     ptrItemEntity = get_item_entity(itemEntityIndex);
-    *(ptrItemEntity + 0x08) = (f64) value2;
-    *(ptrItemEntity + 0x0C) = (f64) value3;
-    *(ptrItemEntity + 0x10) = (f64) value4;
+    ptrItemEntity->position[0] = (f32) x;
+    ptrItemEntity->position[1] = (f32) y;
+    ptrItemEntity->position[2] = (f32) z;
+
     return 2;
 }
-*/
 
 INCLUDE_ASM(code_fa4c0_len_3bf0, SetItemFlags);
 
diff --git a/papermario/undefined_syms.txt b/papermario/undefined_syms.txt
index 81dd6c91b1..ceb7fce283 100644
--- a/papermario/undefined_syms.txt
+++ b/papermario/undefined_syms.txt
@@ -4,7 +4,7 @@ gPlayerData = 0x8010F290;
 gPlayerStatus = 0x8010EFC8;
 gItemTable = 0x800878E0;
 
-mapTransitionAlpha = 0x800A0940;
+gMapTransitionAlpha = 0x800A0940;
 D_800A0942 = 0x800A0942;
 D_800A0944 = 0x800A0944;
 
@@ -29,6 +29,8 @@ D_8009A5D8 = 0x8009A5D8;
 D_8009A650 = 0x8009A650;
 D_800DC500 = 0x800DC500;
 D_8010F6D0 = 0x8010F6D0;
+D_8010F304 = 0x8010F304;
+D_8010F444 = 0x8010F444;
 D_802C3000 = 0x802C3000;
 D_802DBD40 = 0x802DBD40;
 D_802E0D90 = 0x802E0D90;