From 34909107113938f8446aec082a46fb785d30eb2d Mon Sep 17 00:00:00 2001
From: NepuShiro <nepushiro@nepu.men>
Date: Sun, 31 May 2026 16:44:11 -0500
Subject: [PATCH] Implement FakeObjects (Just poles for now)

---
 .idea/editor.xml                          |   2 +-
 .idea/vcs.xml                             |   1 -
 src/FakeObject.c                          | 169 ++++++++++++++++++++++
 src/FakeObject.h                          |  24 +++
 src/decomp/game/interaction.c             |  58 +++++++-
 src/decomp/game/mario_actions_automatic.c |  22 +--
 src/decomp/global_state.c                 |   3 +
 src/decomp/global_state.h                 |   4 +-
 src/libsm64.c                             | 134 +++++++++++++++--
 src/libsm64.h                             |  16 +-
 test/main.cpp                             |   4 +
 11 files changed, 411 insertions(+), 26 deletions(-)
 create mode 100644 src/FakeObject.c
 create mode 100644 src/FakeObject.h

diff --git a/.idea/editor.xml b/.idea/editor.xml
index 3361f21..e9b29f0 100644
--- a/.idea/editor.xml
+++ b/.idea/editor.xml
@@ -279,6 +279,7 @@
     <option name="/Default/CodeStyle/CodeFormatting/CppFormatting/INITIALIZER_BRACES/@EntryValue" value="END_OF_LINE_NO_SPACE" type="string" />
     <option name="/Default/CodeStyle/CodeFormatting/CppFormatting/INT_ALIGN_EQ/@EntryValue" value="false" type="bool" />
     <option name="/Default/CodeStyle/CodeFormatting/CppFormatting/KEEP_EXISTING_ENUM_ARRANGEMENT/@EntryValue" value="false" type="bool" />
+    <option name="/Default/CodeStyle/CodeFormatting/CppFormatting/KEEP_USER_LINEBREAKS/@EntryValue" value="false" type="bool" />
     <option name="/Default/CodeStyle/CodeFormatting/CppFormatting/LABELED_STATEMENT_STYLE/@EntryValue" value="ON_SINGLE_LINE" type="string" />
     <option name="/Default/CodeStyle/CodeFormatting/CppFormatting/LINE_BREAK_AFTER_COLON_IN_MEMBER_INITIALIZER_LISTS/@EntryValue" value="ON_SINGLE_LINE" type="string" />
     <option name="/Default/CodeStyle/CodeFormatting/CppFormatting/LINE_BREAK_AFTER_DEREF_IN_TRAILING_RETURN_TYPES/@EntryValue" value="ON_SINGLE_LINE" type="string" />
@@ -330,7 +331,6 @@
     <option name="/Default/CodeStyle/CodeFormatting/CppFormatting/WRAP_BEFORE_TERNARY_OPSIGNS/@EntryValue" value="true" type="bool" />
     <option name="/Default/CodeStyle/CodeFormatting/CppFormatting/WRAP_ENUMERATION_STYLE/@EntryValue" value="CHOP_ALWAYS" type="string" />
     <option name="/Default/CodeStyle/CodeFormatting/CppFormatting/WRAP_LINES/@EntryValue" value="false" type="bool" />
-    <option name="/Default/CodeStyle/CodeFormatting/CppFormatting/WRAP_PARAMETERS_STYLE/@EntryValue" value="WRAP_IF_LONG" type="string" />
     <option name="/Default/CodeStyle/EditorConfig/EnableClangFormatSupport/@EntryValue" value="false" type="bool" />
     <option name="/Default/CodeStyle/Naming/CppNamingOptions/Rules/=05D45346A5B5B54F93A9F94C46B14079/@EntryIndexRemoved" value="true" type="bool" />
     <option name="/Default/CodeStyle/Naming/CppNamingOptions/Rules/=05D45346A5B5B54F93A9F94C46B14079/@EntryIndexedValue" value="" type="string" />
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
index 8287001..35eb1dd 100644
--- a/.idea/vcs.xml
+++ b/.idea/vcs.xml
@@ -2,6 +2,5 @@
 <project version="4">
   <component name="VcsDirectoryMappings">
     <mapping directory="" vcs="Git" />
-    <mapping directory="$PROJECT_DIR$/test/imgui" vcs="Git" />
   </component>
 </project>
\ No newline at end of file
diff --git a/src/FakeObject.c b/src/FakeObject.c
new file mode 100644
index 0000000..e23b023
--- /dev/null
+++ b/src/FakeObject.c
@@ -0,0 +1,169 @@
+//
+// Created by nepushiro on 5/29/26.
+//
+
+#include "FakeObject.h"
+
+#include <string.h>
+
+#include "decomp/global_state.h"
+#include "decomp/engine/math_util.h"
+#include "decomp/game/interaction.h"
+#include "decomp/game/object_stuff.h"
+#include "decomp/include/object_fields.h"
+#include "libsm64.h"
+#include <stdint.h>
+
+void fake_object_init(struct FakeObject *fake, float x, float y, float z)
+{
+    memset(fake, 0, sizeof(*fake));
+
+    struct Object *obj = &fake->object;
+    obj->activeFlags = ACTIVE_FLAG_ACTIVE | ACTIVE_FLAG_UNK8;
+    obj->parentObj = NULL;
+    obj->prevObj = NULL;
+    obj->collidedObjInteractTypes = 0;
+    obj->numCollidedObjs = 0;
+
+    for (s32 i = 0; i < 0x50; i++)
+    {
+        #ifdef _WIN32
+        obj->rawData.asS32[i] = 0;
+        #endif
+        #ifdef _WIN64
+        obj->ptrData.asVoidPtr[i] = NULL;
+        #endif
+    }
+
+    obj->unused1 = 0;
+    obj->bhvStackIndex = 0;
+    obj->bhvDelayTimer = 0;
+
+    obj->hitboxRadius = 50.0f;
+    obj->hitboxHeight = 100.0f;
+    obj->hurtboxRadius = 0.0f;
+    obj->hurtboxHeight = 0.0f;
+    obj->hitboxDownOffset = 0.0f;
+    obj->unused2 = 0;
+
+    obj->platform = NULL;
+    obj->collisionData = NULL;
+    obj->oIntangibleTimer = -1;
+    obj->oDamageOrCoinValue = 0;
+    obj->oHealth = 2048;
+
+    obj->oCollisionDistance = 1000.0f;
+    obj->oDrawingDistance = 4000.0f;
+
+    mtxf_identity(obj->transform);
+
+    obj->respawnInfoType = RESPAWN_INFO_TYPE_NULL;
+    obj->respawnInfo = NULL;
+
+    obj->oDistanceToMario = 19000.0f;
+    obj->oRoom = -1;
+    obj->oInteractType = 0;
+    obj->oInteractionSubtype = 0;
+    obj->oHeldState = 0;
+    obj->oAction = 0;
+
+    obj->header.gfx.node.flags |= GRAPH_RENDER_ACTIVE;
+    obj->header.gfx.node.flags |= GRAPH_RENDER_INVISIBLE;
+    obj->header.gfx.node.flags &= ~GRAPH_RENDER_BILLBOARD;
+    obj->header.gfx.pos[0] = x;
+    obj->header.gfx.pos[1] = y;
+    obj->header.gfx.pos[2] = z;
+    obj->header.gfx.angle[0] = 0;
+    obj->header.gfx.angle[1] = 0;
+    obj->header.gfx.angle[2] = 0;
+    obj->header.gfx.throwMatrix = NULL;
+    obj->header.gfx.sharedChild = NULL;
+    obj->header.gfx.animInfo.curAnim = NULL;
+    obj->header.gfx.animInfo.animID = 0;
+    obj->header.gfx.animInfo.animFrame = 0;
+    obj->header.gfx.animInfo.animTimer = 0;
+
+    obj->oPosX = x;
+    obj->oPosY = y;
+    obj->oPosZ = z;
+    obj->oMoveAnglePitch = 0;
+    obj->oMoveAngleYaw = 0;
+    obj->oMoveAngleRoll = 0;
+    obj->oFaceAnglePitch = 0;
+    obj->oFaceAngleYaw = 0;
+    obj->oFaceAngleRoll = 0;
+}
+
+void fake_object_sync_position(struct FakeObject *fake)
+{
+    struct Object *obj = &fake->object;
+    obj->header.gfx.pos[0] = obj->oPosX;
+    obj->header.gfx.pos[1] = obj->oPosY;
+    obj->header.gfx.pos[2] = obj->oPosZ;
+}
+
+bool fake_object_overlaps_mario(struct FakeObject *fake, struct MarioState *m)
+{
+    struct Object *obj = &fake->object;
+    float dx = obj->oPosX - m->pos[0];
+    float dz = obj->oPosZ - m->pos[2];
+    float radius = obj->hitboxRadius;
+    float top = obj->oPosY + obj->hitboxHeight;
+    float bottom = obj->oPosY - obj->hitboxDownOffset;
+
+    if ((dx * dx) + (dz * dz) > radius * radius)
+    {
+        return false;
+    }
+
+    if (m->pos[1] < bottom || m->pos[1] > top)
+    {
+        return false;
+    }
+
+    return true;
+}
+
+void fake_object_add_collision(struct FakeObject *fake, struct MarioState *m)
+{
+    struct Object *obj = &fake->object;
+
+    if (obj->oHeldState != 0)
+    {
+        return;
+    }
+
+    m->marioObj->collidedObjInteractTypes |= obj->oInteractType;
+    if (m->marioObj->numCollidedObjs < 4)
+    {
+        m->marioObj->collidedObjs[m->marioObj->numCollidedObjs++] = obj;
+    }
+}
+
+void fake_object_apply_pole(struct FakeObject *fake)
+{
+    (void)fake;
+}
+
+void fake_object_set_preset(struct FakeObject *fake, uint32_t preset)
+{
+    struct Object *obj = &fake->object;
+
+    switch (preset)
+    {
+        case 1:
+            obj->oInteractType = INTERACT_POLE;
+            obj->oInteractionSubtype = 0;
+            obj->hitboxRadius = 60.0f;
+            obj->hitboxHeight = 1000.0f;
+            obj->hitboxDownOffset = 0.0f;
+            break;
+        case 0: default:
+            obj->oInteractType = 0;
+            obj->oInteractionSubtype = 0;
+            obj->hitboxRadius = 50.0f;
+            obj->hitboxHeight = 100.0f;
+            obj->hitboxDownOffset = 0.0f;
+            break;
+    }
+}
diff --git a/src/FakeObject.h b/src/FakeObject.h
new file mode 100644
index 0000000..94adabf
--- /dev/null
+++ b/src/FakeObject.h
@@ -0,0 +1,24 @@
+//
+// Created by nepushiro on 5/29/26.
+//
+
+#ifndef LIBSM64_FAKEOBJECT_H
+#define LIBSM64_FAKEOBJECT_H
+
+#endif //LIBSM64_FAKEOBJECT_H
+
+#include <stdint.h>
+#include <types.h>
+
+struct FakeObject
+{
+    struct Object object;
+};
+
+void fake_object_init(struct FakeObject *fake, float x, float y, float z);
+void fake_object_sync_position(struct FakeObject *fake);
+
+bool fake_object_overlaps_mario(struct FakeObject *fake, struct MarioState *m);
+void fake_object_add_collision(struct FakeObject *fake, struct MarioState *m);
+void fake_object_apply_pole(struct FakeObject *fake);
+void fake_object_set_preset(struct FakeObject *fake, uint32_t preset);
\ No newline at end of file
diff --git a/src/decomp/game/interaction.c b/src/decomp/game/interaction.c
index 4f28b0f..85d792e 100644
--- a/src/decomp/game/interaction.c
+++ b/src/decomp/game/interaction.c
@@ -71,6 +71,62 @@ static u32 interact_noop(struct MarioState *m, u32 interactType, struct Object *
     return FALSE;
 }
 
+void push_mario_out_of_object(struct MarioState *m, struct Object *o, f32 padding);
+void reset_mario_pitch(struct MarioState *m);
+
+static u32 interact_pole(struct MarioState *m, u32 interactType, struct Object *o)
+{
+    s32 actionId = m->action & ACT_ID_MASK;
+
+    if (actionId >= 0x080 && actionId < 0x0A0)
+    {
+#if defined(VERSION_SH) || defined(VERSION_CN)
+        f32 velConv = m->forwardVel; // conserve the velocity.
+        struct Object *marioObj = m->marioObj;
+        u32 lowSpeed;
+#else
+        u32 lowSpeed = (m->forwardVel <= 10.0f);
+        struct Object *marioObj = m->marioObj;
+#endif
+
+        if (!(m->prevAction & ACT_FLAG_ON_POLE) || m->usedObj != o)
+        {
+#if defined(VERSION_SH) || defined(VERSION_CN)
+            lowSpeed = (velConv <= 10.0f);
+#endif
+
+            mario_stop_riding_and_holding(m);
+
+            m->interactObj = o;
+            m->usedObj = o;
+            m->vel[1] = 0.0f;
+            m->forwardVel = 0.0f;
+
+            marioObj->oMarioPoleUnk108 = 0;
+            marioObj->oMarioPoleYawVel = 0;
+            marioObj->oMarioPolePos = m->pos[1] - o->oPosY;
+
+            if (lowSpeed)
+            {
+                return set_mario_action(m, ACT_GRAB_POLE_SLOW, 0);
+            }
+
+#if defined(VERSION_SH) || defined(VERSION_CN)
+            marioObj->oMarioPoleYawVel = (s32)(velConv * 0x100 + 0x1000);
+#else
+            marioObj->oMarioPoleYawVel = (s32)(m->forwardVel * 0x100 + 0x1000);
+#endif
+            reset_mario_pitch(m);
+#if ENABLE_RUMBLE
+            queue_rumble_data(5, 80);
+#endif
+            return set_mario_action(m, ACT_GRAB_POLE_FAST, 0);
+        }
+    }
+
+    return FALSE;
+}
+
 static struct InteractionHandler sInteractionHandlers[] = {
     {INTERACT_COIN, interact_noop},
     {INTERACT_WATER_RING, interact_noop},
@@ -94,7 +150,7 @@ static struct InteractionHandler sInteractionHandlers[] = {
     {INTERACT_HIT_FROM_BELOW, interact_noop},
     {INTERACT_BOUNCE_TOP, interact_noop},
     {INTERACT_DAMAGE, interact_noop},
-    {INTERACT_POLE, interact_noop},
+    {INTERACT_POLE, interact_pole},
     {INTERACT_HOOT, interact_noop},
     {INTERACT_BREAKABLE, interact_noop},
     {INTERACT_KOOPA, interact_noop},
diff --git a/src/decomp/game/mario_actions_automatic.c b/src/decomp/game/mario_actions_automatic.c
index 5823730..93effd8 100644
--- a/src/decomp/game/mario_actions_automatic.c
+++ b/src/decomp/game/mario_actions_automatic.c
@@ -123,8 +123,7 @@ s32 set_pole_position(struct MarioState *m, f32 offsetY)
     }
 
     vec3f_copy(m->marioObj->header.gfx.pos, m->pos);
-    vec3s_set(m->marioObj->header.gfx.angle, m->usedObj->oMoveAnglePitch, m->faceAngle[1],
-              m->usedObj->oMoveAngleRoll);
+    vec3s_set(m->marioObj->header.gfx.angle, m->usedObj->oMoveAnglePitch, m->faceAngle[1], m->usedObj->oMoveAngleRoll);
 
     return result;
 }
@@ -132,6 +131,7 @@ s32 set_pole_position(struct MarioState *m, f32 offsetY)
 s32 act_holding_pole(struct MarioState *m)
 {
     struct Object *marioObj = m->marioObj;
+    f32 poleStickY = -m->controller->stickY;
 
     #ifdef VERSION_JP
     if (m->input & INPUT_A_PRESSED)
@@ -163,7 +163,7 @@ s32 act_holding_pole(struct MarioState *m)
     }
     #endif
 
-    if (m->controller->stickY > 16.0f)
+    if (poleStickY > 16.0f)
     {
         f32 poleTop = m->usedObj->hitboxHeight - 100.0f;
         //      const BehaviorScript *poleBehavior = virtual_to_segmented(0x13, m->usedObj->behavior);
@@ -174,15 +174,15 @@ s32 act_holding_pole(struct MarioState *m)
         }
 
         //      if (poleBehavior != bhvGiantPole && m->controller->stickY > 50.0f) {
-        if (m->controller->stickY > 50.0f)
+        if (poleStickY > 50.0f)
         {
             return set_mario_action(m, ACT_TOP_OF_POLE_TRANSITION, 0);
         }
     }
 
-    if (m->controller->stickY < -16.0f)
+    if (poleStickY < -16.0f)
     {
-        marioObj->oMarioPoleYawVel -= m->controller->stickY * 2;
+        marioObj->oMarioPoleYawVel -= poleStickY * 2;
         if (marioObj->oMarioPoleYawVel > 0x1000)
         {
             marioObj->oMarioPoleYawVel = 0x1000;
@@ -223,6 +223,7 @@ s32 act_climbing_pole(struct MarioState *m)
     s32 sp24;
     struct Object *marioObj = m->marioObj;
     s16 cameraAngle = m->area->camera->yaw;
+    f32 poleStickY = -m->controller->stickY;
 
     #ifndef VERSION_JP
     if (m->health < 0x100)
@@ -240,18 +241,18 @@ s32 act_climbing_pole(struct MarioState *m)
         return set_mario_action(m, ACT_WALL_KICK_AIR, 0);
     }
 
-    if (m->controller->stickY < 8.0f)
+    if (poleStickY < 8.0f)
     {
         return set_mario_action(m, ACT_HOLDING_POLE, 0);
     }
 
-    marioObj->oMarioPolePos += m->controller->stickY / 8.0f;
+    marioObj->oMarioPolePos += poleStickY / 8.0f;
     marioObj->oMarioPoleYawVel = 0;
     m->faceAngle[1] = cameraAngle - approach_s32((s16)(cameraAngle - m->faceAngle[1]), 0, 0x400, 0x400);
 
     if (set_pole_position(m, 0.0f) == POLE_NONE)
     {
-        sp24 = m->controller->stickY / 4.0f * 0x10000;
+        sp24 = poleStickY / 4.0f * 0x10000;
         set_mario_anim_with_accel(m, MARIO_ANIM_CLIMB_UP_POLE, sp24);
         add_tree_leaf_particles(m);
         play_climbing_sounds(m, 1);
@@ -336,12 +337,13 @@ s32 act_top_of_pole(struct MarioState *m)
 {
     UNUSED
     struct Object *marioObj = m->marioObj;
+    f32 poleStickY = -m->controller->stickY;
 
     if (m->input & INPUT_A_PRESSED)
     {
         return set_mario_action(m, ACT_TOP_OF_POLE_JUMP, 0);
     }
-    if (m->controller->stickY < -16.0f)
+    if (poleStickY < -16.0f)
     {
         return set_mario_action(m, ACT_TOP_OF_POLE_TRANSITION, 1);
     }
diff --git a/src/decomp/global_state.c b/src/decomp/global_state.c
index 20fdeee..63e44dd 100644
--- a/src/decomp/global_state.c
+++ b/src/decomp/global_state.c
@@ -3,6 +3,8 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include "../obj_pool.h"
+
 struct GlobalState *g_state = 0;
 
 struct GlobalState *global_state_create(void)
@@ -21,5 +23,6 @@ void global_state_bind(struct GlobalState *state)
 
 void global_state_delete(struct GlobalState *state)
 {
+    obj_pool_free_all(&state->mgFakeObjects);
     free(state);
 }
\ No newline at end of file
diff --git a/src/decomp/global_state.h b/src/decomp/global_state.h
index 2ae3667..3a97f87 100644
--- a/src/decomp/global_state.h
+++ b/src/decomp/global_state.h
@@ -2,6 +2,7 @@
 
 #include "include/types.h"
 #include "game/area.h"
+#include "../obj_pool.h"
 
 struct GlobalState
 {
@@ -41,6 +42,7 @@ struct GlobalState
     struct Area *mgCurrentArea;
     struct Object *mgCurrentObject;
     struct Object *mgMarioObject;
+    struct ObjPool mgFakeObjects;
     struct MarioAnimation mD_80339D10;
     struct MarioState mgMarioStateVal;
 };
@@ -54,4 +56,4 @@ extern struct GlobalState *global_state_create(void);
 
 extern void global_state_bind(struct GlobalState *state);
 
-extern void global_state_delete(struct GlobalState *state);
\ No newline at end of file
+extern void global_state_delete(struct GlobalState *state);
diff --git a/src/libsm64.c b/src/libsm64.c
index 538e5fd..920de43 100644
--- a/src/libsm64.c
+++ b/src/libsm64.c
@@ -38,6 +38,8 @@
 #include "load_tex_data.h"
 #include "obj_pool.h"
 #include "fake_interaction.h"
+#include "object_fields.h"
+#include "FakeObject.h"
 
 static struct AllocOnlyPool *s_mario_geo_pool = NULL;
 static struct GraphNode *s_mario_graph_node = NULL;
@@ -51,6 +53,7 @@ struct MarioInstance
 };
 
 struct ObjPool s_mario_instance_pool = {0, 0};
+struct ObjPool s_fakeobj_instance_pool = {0, 0};
 
 static void update_button(bool on, u16 button)
 {
@@ -109,8 +112,7 @@ SM64_LIB_FN void sm64_register_play_sound_function(SM64PlaySoundFunctionPtr play
 
 SM64_LIB_FN void sm64_global_init(const uint8_t *rom, uint8_t *outTexture)
 {
-    if (s_init_global)
-        sm64_global_terminate();
+    if (s_init_global) sm64_global_terminate();
 
     s_init_global = true;
 
@@ -128,9 +130,8 @@ SM64_LIB_FN void sm64_global_terminate(void)
 
     if (s_init_one_mario)
     {
-        for (int i = 0; i < s_mario_instance_pool.size; ++i)
-            if (s_mario_instance_pool.objects[i] != NULL)
-                sm64_mario_delete(i);
+        for (int i = 0; i < s_mario_instance_pool.size; ++i) if (s_mario_instance_pool.objects[i] != NULL) sm64_mario_delete(i);
+        for (int i = 0; i < s_fakeobj_instance_pool.size; ++i) if (s_fakeobj_instance_pool.objects[i] != NULL) sm64_fake_object_delete(i);
 
         obj_pool_free_all(&s_mario_instance_pool);
     }
@@ -257,6 +258,10 @@ SM64_LIB_FN void sm64_mario_tick(int32_t marioId, const struct SM64MarioInputs *
 
     apply_mario_platform_displacement();
     bhv_mario_update();
+
+    gMarioState->marioObj->collidedObjInteractTypes = 0;
+    gMarioState->marioObj->numCollidedObjs = 0;
+
     update_mario_platform(); // TODO platform grabbed here and used next tick could be a use-after-free
 
     gfx_adapter_bind_output_buffers(outBuffers);
@@ -623,6 +628,119 @@ SM64_LIB_FN void sm64_mario_extend_cap(int32_t marioId, uint16_t capTime)
     gMarioState->capTimer += capTime;
 }
 
+SM64_LIB_FN int32_t sm64_fake_object_create(float x, float y, float z, int32_t preset)
+{
+    struct GlobalState *state = g_state;
+    if (state == NULL)
+    {
+        DEBUG_PRINT("Tried to create fake object without an active Mario state.");
+        return -1;
+    }
+
+    int32_t objectIndex = obj_pool_alloc_index(&s_fakeobj_instance_pool, sizeof(struct FakeObject));
+    struct FakeObject *fake = (struct FakeObject *)s_fakeobj_instance_pool.objects[objectIndex];
+
+    fake_object_init(fake, x, y, z);
+    fake_object_set_preset(fake, preset);
+    return objectIndex;
+}
+
+SM64_LIB_FN void sm64_fake_object_delete(int32_t objectId)
+{
+    if (objectId >= s_fakeobj_instance_pool.size || s_fakeobj_instance_pool.objects[objectId] == NULL)
+    {
+        DEBUG_PRINT("Tried to use non-existant Object with ID: %d", objectId);
+        return;
+    }
+    struct FakeObject *fake = s_fakeobj_instance_pool.objects[objectId];
+
+    struct MarioState *m = &g_state->mgMarioStateVal;
+    uint32_t action = m->action;
+
+    if (m->interactObj == &fake->object || m->usedObj == &fake->object || m->heldObj == &fake->object)
+    {
+        m->interactObj = NULL;
+        m->usedObj = NULL;
+        m->heldObj = NULL;
+
+        switch (action)
+        {
+            case ACT_HOLDING_POLE:
+            case ACT_CLIMBING_POLE:
+            case ACT_TOP_OF_POLE:
+                m->action = ACT_FREEFALL;
+                break;
+
+            default:
+                m->action = ACT_IDLE;
+                break;
+        }
+
+        m->actionState = 0;
+    }
+    if (m->marioBodyState != NULL && m->heldObj == NULL)
+    {
+        vec3f_set(m->marioBodyState->heldObjLastPosition, 0.0f, 0.0f, 0.0f);
+    }
+
+    obj_pool_free_index(&s_fakeobj_instance_pool, (uint32_t)objectId);
+}
+
+SM64_LIB_FN void sm64_fake_object_set_position(int32_t objectId, float x, float y, float z)
+{
+    if (objectId >= s_fakeobj_instance_pool.size || s_fakeobj_instance_pool.objects[objectId] == NULL)
+    {
+        DEBUG_PRINT("Tried to use non-existant Object with ID: %d", objectId);
+        return;
+    }
+    struct FakeObject *fake = s_fakeobj_instance_pool.objects[objectId];
+
+    fake->object.oPosX = x;
+    fake->object.oPosY = y;
+    fake->object.oPosZ = z;
+    fake_object_sync_position(fake);
+}
+
+SM64_LIB_FN void sm64_fake_object_set_hitbox(int32_t objectId, float radius, float height, float downOffset)
+{
+    if (objectId >= s_fakeobj_instance_pool.size || s_fakeobj_instance_pool.objects[objectId] == NULL)
+    {
+        DEBUG_PRINT("Tried to use non-existant Object with ID: %d", objectId);
+        return;
+    }
+    struct FakeObject *fake = s_fakeobj_instance_pool.objects[objectId];
+
+    fake->object.hitboxRadius = radius;
+    fake->object.hitboxHeight = height;
+    fake->object.hitboxDownOffset = downOffset;
+}
+
+SM64_LIB_FN void sm64_fake_object_tick(int32_t objectId)
+{
+    if (objectId >= s_fakeobj_instance_pool.size || s_fakeobj_instance_pool.objects[objectId] == NULL)
+    {
+        DEBUG_PRINT("Tried to use non-existant Object with ID: %d", objectId);
+        return;
+    }
+    struct FakeObject *fake = s_fakeobj_instance_pool.objects[objectId];
+
+    struct GlobalState *state = g_state;
+    struct MarioState *m = state != NULL ? &state->mgMarioStateVal : NULL;
+    struct Object *obj = &fake->object;
+
+    obj->oInteractStatus = 0;
+
+    if (m == NULL)
+    {
+        return;
+    }
+
+    if (fake_object_overlaps_mario(fake, m))
+    {
+        fake_object_add_collision(fake, m);
+    }
+}
+
 SM64_LIB_FN bool sm64_mario_attack(int32_t marioId, float x, float y, float z, float hitboxHeight)
 {
     if (marioId >= s_mario_instance_pool.size || s_mario_instance_pool.objects[marioId] == NULL)
@@ -653,12 +771,10 @@ SM64_LIB_FN void sm64_surface_object_delete(uint32_t objectId)
     // A mario standing on the platform that is being destroyed will have a pointer to freed memory if we don't clear it.
     for (int i = 0; i < s_mario_instance_pool.size; ++i)
     {
-        if (s_mario_instance_pool.objects[i] == NULL)
-            continue;
+        if (s_mario_instance_pool.objects[i] == NULL) continue;
 
         struct GlobalState *state = ((struct MarioInstance *)s_mario_instance_pool.objects[i])->globalState;
-        if (state->mgMarioObject->platform == surfaces_object_get_transform_ptr(objectId))
-            state->mgMarioObject->platform = NULL;
+        if (state->mgMarioObject->platform == surfaces_object_get_transform_ptr(objectId)) state->mgMarioObject->platform = NULL;
     }
 
     surfaces_unload_object(objectId);
diff --git a/src/libsm64.h b/src/libsm64.h
index 1f2c940..0ed9c7c 100644
--- a/src/libsm64.h
+++ b/src/libsm64.h
@@ -1,9 +1,7 @@
 #ifndef LIB_SM64_H
 #define LIB_SM64_H
 
-#include <stddef.h>
 #include <stdint.h>
-#include <stdbool.h>
 
 #if defined(_WIN32)
 #ifdef SM64_LIB_EXPORT
@@ -146,7 +144,9 @@ struct SM64SurfaceCollisionData
 
 enum
 {
-    SM64_TEXTURE_WIDTH = 64 * 11, SM64_TEXTURE_HEIGHT = 64, SM64_GEO_MAX_TRIANGLES = 1024,
+    SM64_TEXTURE_WIDTH = 64 * 11,
+    SM64_TEXTURE_HEIGHT = 64,
+    SM64_GEO_MAX_TRIANGLES = 1024,
 };
 
 typedef void (*SM64RumbleCallbackFunctionPtr)(int32_t marioId, int16_t level, int16_t time);
@@ -259,6 +259,16 @@ extern SM64_LIB_FN uint16_t sm64_get_current_background_music();
 
 extern SM64_LIB_FN void sm64_play_sound(int32_t soundBits, float *pos);
 
+extern SM64_LIB_FN int32_t sm64_fake_object_create(float x, float y, float z, int32_t preset);
+
+extern SM64_LIB_FN void sm64_fake_object_delete(int32_t objectId);
+
+extern SM64_LIB_FN void sm64_fake_object_set_position(int32_t objectId, float x, float y, float z);
+
+extern SM64_LIB_FN void sm64_fake_object_set_hitbox(int32_t objectId, float radius, float height, float downOffset);
+
+extern SM64_LIB_FN void sm64_fake_object_tick(int32_t objectId);
+
 extern SM64_LIB_FN void sm64_play_sound_global(int32_t soundBits);
 
 extern SM64_LIB_FN void sm64_set_sound_volume(float vol);
diff --git a/test/main.cpp b/test/main.cpp
index 09ac1e8..7402050 100644
--- a/test/main.cpp
+++ b/test/main.cpp
@@ -800,6 +800,9 @@ int main(void)
     sm64_static_surfaces_load(surfaces, surfaces_count);
     int32_t marioId = sm64_mario_create(-6558, 0, 6464);
 
+    int thing = sm64_fake_object_create(-6558.0f, 0.0f, 6200.0f, 1);
+    sm64_fake_object_set_hitbox(thing, 32.0f, 800.0f * 2, 800);
+
     printf("MarioID: %i\n", marioId);
     free(rom);
 
@@ -958,6 +961,7 @@ int main(void)
 
             tick -= 1.f / 30;
             sm64_mario_tick(marioId, &marioInputs, &marioState, &marioGeometry);
+            sm64_fake_object_tick(thing);
 
             memcpy(currPos, marioState.position, sizeof(currPos));
             memcpy(currGeoPos, marioGeometry.position, sizeof(currGeoPos));