Merge remote-tracking branch 'origin/main' into tphd

# Conflicts:
#	CMakeLists.txt
#	src/dusk/file_select.cpp

src/d/actor/d_a_alink.cpp

@@ -51,6 +51,7 @@
 #include "d/actor/d_a_ni.h"
 #include "d/d_s_play.h"
 
+#include "dusk/frame_interpolation.h"
 #include "dusk/settings.h"
 #include "res/Object/Alink.h"
 #include <cstring>
@@ -14787,6 +14788,10 @@ void daAlink_c::deleteEquipItem(BOOL i_isPlaySound, BOOL i_isDeleteKantera) {
     mIronBallChainPos = NULL;
     mIronBallChainAngle = NULL;
     field_0x3848 = NULL;
+#if TARGET_PC
+    mIBChainInterpPrevValid = false;
+    mIBChainInterpCurrValid = false;
+#endif
     field_0x0774 = NULL;
     field_0x0778 = NULL;
     mpHookshotLinChk = NULL;
@@ -19717,6 +19722,27 @@ int daAlink_c::draw() {
                 )
             {
                 dComIfGd_getOpaListDark()->entryImm(mpHookChain, 0);
+
+#if TARGET_PC
+                if (dusk::getSettings().game.enableFrameInterpolation &&
+                    mEquipItem == dItemNo_IRONBALL_e &&
+                    mIronBallChainPos != NULL && mIronBallChainAngle != NULL)
+                {
+                    if (mIBChainInterpCurrValid) {
+                        memcpy(mIBChainInterpPrevPos, mIBChainInterpCurrPos, IRON_BALL_CHAIN_COUNT * sizeof(cXyz));
+                        memcpy(mIBChainInterpPrevAngle, mIBChainInterpCurrAngle, IRON_BALL_CHAIN_COUNT * sizeof(csXyz));
+                        mIBChainInterpPrevHandRoot = mIBChainInterpCurrHandRoot;
+                        mIBChainInterpPrevValid = true;
+                    }
+
+                    memcpy(mIBChainInterpCurrPos, mIronBallChainPos, IRON_BALL_CHAIN_COUNT * sizeof(cXyz));
+                    memcpy(mIBChainInterpCurrAngle, mIronBallChainAngle, IRON_BALL_CHAIN_COUNT * sizeof(csXyz));
+                    mIBChainInterpCurrHandRoot = mHookshotTopPos;
+                    mIBChainInterpCurrValid = true;
+
+                    dusk::frame_interp::add_interpolation_callback(&ironBallChainInterpCallback, this);
+                }
+#endif
             }
         }
 

src/d/actor/d_a_alink_hook.inc

@@ -8,6 +8,8 @@
 #include "d/actor/d_a_obj_swhang.h"
 #include "d/actor/d_a_obj_chandelier.h"
 #include "JSystem/J3DGraphBase/J3DMaterial.h"
+#include "dusk/frame_interpolation.h"
+#include "dusk/settings.h"
 
 enum {
     HS_MODE_NONE_e,
@@ -235,6 +237,31 @@ void daAlink_c::hsChainShape_c::draw() {
     }
 }
 
+#if TARGET_PC
+static void ironBallChainInterpCallback(bool isSimFrame, void* pUserWork) {
+    static_cast<daAlink_c*>(pUserWork)->onIronBallChainInterpCallback();
+}
+
+void daAlink_c::onIronBallChainInterpCallback() {
+    if (!mIBChainInterpPrevValid || !mIBChainInterpCurrValid) {
+        return;
+    }
+    if (mIronBallChainPos == NULL || mIronBallChainAngle == NULL) {
+        return;
+    }
+
+    const f32 alpha = dusk::frame_interp::get_interpolation_step();
+
+    for (int i = 0; i < IRON_BALL_CHAIN_COUNT; i++) {
+        mIronBallChainPos[i] = mIBChainInterpPrevPos[i] + (mIBChainInterpCurrPos[i] - mIBChainInterpPrevPos[i]) * alpha;
+        mIronBallChainAngle[i].x = mIBChainInterpPrevAngle[i].x + (s16)((s16)(mIBChainInterpCurrAngle[i].x - mIBChainInterpPrevAngle[i].x) * alpha);
+        mIronBallChainAngle[i].y = mIBChainInterpPrevAngle[i].y + (s16)((s16)(mIBChainInterpCurrAngle[i].y - mIBChainInterpPrevAngle[i].y) * alpha);
+        mIronBallChainAngle[i].z = mIBChainInterpPrevAngle[i].z + (s16)((s16)(mIBChainInterpCurrAngle[i].z - mIBChainInterpPrevAngle[i].z) * alpha);
+    }
+    mHookshotTopPos = mIBChainInterpPrevHandRoot + (mIBChainInterpCurrHandRoot - mIBChainInterpPrevHandRoot) * alpha;
+}
+#endif
+
 void daAlink_c::hookshotAtHitCallBack(dCcD_GObjInf* i_atObjInf, fopAc_ac_c* i_tgActor,
                                       dCcD_GObjInf* i_tgObjInf) {
     if (i_tgActor != NULL && fopAcM_IsActor(i_tgActor) && !i_tgObjInf->ChkTgHookshotThrough()) {

src/d/actor/d_a_e_db.cpp

@@ -10,6 +10,10 @@
 #include "f_op/f_op_kankyo_mng.h"
 #include "f_op/f_op_actor_enemy.h"
 
+#if TARGET_PC
+#include "dusk/frame_interpolation.h"
+#endif
+
 class daE_DB_HIO_c : public JORReflexible {
 public:
     daE_DB_HIO_c();
@@ -66,6 +70,22 @@ static BOOL leaf_anm_init(e_db_class* i_this, int i_anm, f32 i_morf, u8 i_mode,
     return FALSE;
 }
 
+#if TARGET_PC
+static void daE_DB_interp_callback(bool isSimFrame, void* pUserWork) {
+    e_db_class* i_this = (e_db_class*)pUserWork;
+    if (!i_this->mStalkLineInterpPrevValid || !i_this->mStalkLineInterpCurrValid) {
+        return;
+    }
+    const f32 alpha = dusk::frame_interp::get_interpolation_step();
+    cXyz* dst = i_this->stalkLine.getPos(0);
+    for (int i = 0; i < 12; i++) {
+        const cXyz& p0 = i_this->mStalkLineInterpPrev[i];
+        const cXyz& p1 = i_this->mStalkLineInterpCurr[i];
+        dst[i] = p0 + (p1 - p0) * alpha;
+    }
+}
+#endif
+
 static int daE_DB_Draw(e_db_class* i_this) {
     fopAc_ac_c* actor = &i_this->enemy;
 
@@ -95,6 +115,17 @@ static int daE_DB_Draw(e_db_class* i_this) {
     static GXColor l_color = {0x14, 0x0F, 0x00, 0xFF};
     i_this->stalkLine.update(12, l_color, &actor->tevStr);
     dComIfGd_set3DlineMat(&i_this->stalkLine);
+#if TARGET_PC
+    if (dusk::getSettings().game.enableFrameInterpolation) {
+        if (i_this->mStalkLineInterpCurrValid) {
+            memcpy(i_this->mStalkLineInterpPrev, i_this->mStalkLineInterpCurr, sizeof(i_this->mStalkLineInterpCurr));
+            i_this->mStalkLineInterpPrevValid = true;
+        }
+        memcpy(i_this->mStalkLineInterpCurr, i_this->stalkLine.getPos(0), 12 * sizeof(cXyz));
+        i_this->mStalkLineInterpCurrValid = true;
+        dusk::frame_interp::add_interpolation_callback(&daE_DB_interp_callback, i_this);
+    }
+#endif
 
     for (int i = 1; i < 11; i++) {
         if (i_this->thornModel[i] != NULL) {

src/d/actor/d_a_e_hb.cpp

@@ -9,6 +9,10 @@
 #include "d/actor/d_a_e_hb_leaf.h"
 #include "f_op/f_op_actor_enemy.h"
 
+#if TARGET_PC
+#include "dusk/frame_interpolation.h"
+#endif
+
 enum daE_HB_ACTION {
     ACTION_STAY,
     ACTION_APPEAR,
@@ -64,6 +68,22 @@ static BOOL leaf_anm_init(e_hb_class* i_this, int i_anm, f32 i_morf, u8 i_mode,
     return FALSE;
 }
 
+#if TARGET_PC
+static void daE_HB_interp_callback(bool isSimFrame, void* pUserWork) {
+    e_hb_class* i_this = (e_hb_class*)pUserWork;
+    if (!i_this->mStalkLineInterpPrevValid || !i_this->mStalkLineInterpCurrValid) {
+        return;
+    }
+    const f32 alpha = dusk::frame_interp::get_interpolation_step();
+    cXyz* dst = i_this->stalkLine.getPos(0);
+    for (int i = 0; i < 12; i++) {
+        const cXyz& p0 = i_this->mStalkLineInterpPrev[i];
+        const cXyz& p1 = i_this->mStalkLineInterpCurr[i];
+        dst[i] = p0 + (p1 - p0) * alpha;
+    }
+}
+#endif
+
 static int daE_HB_Draw(e_hb_class* i_this) {
     fopAc_ac_c* actor = &i_this->enemy;
 
@@ -82,6 +102,17 @@ static int daE_HB_Draw(e_hb_class* i_this) {
     static GXColor l_color = {0x14, 0x0F, 0x00, 0xFF};
     i_this->stalkLine.update(12, l_color, &actor->tevStr);
     dComIfGd_set3DlineMat(&i_this->stalkLine);
+#if TARGET_PC
+    if (dusk::getSettings().game.enableFrameInterpolation) {
+        if (i_this->mStalkLineInterpCurrValid) {
+            memcpy(i_this->mStalkLineInterpPrev, i_this->mStalkLineInterpCurr, sizeof(i_this->mStalkLineInterpCurr));
+            i_this->mStalkLineInterpPrevValid = true;
+        }
+        memcpy(i_this->mStalkLineInterpCurr, i_this->stalkLine.getPos(0), 12 * sizeof(cXyz));
+        i_this->mStalkLineInterpCurrValid = true;
+        dusk::frame_interp::add_interpolation_callback(&daE_HB_interp_callback, i_this);
+    }
+#endif
 
     for (int i = 1; i < 11; i++) {
         if (i_this->thornModel[i] != NULL) {

src/d/actor/d_a_e_s1.cpp

@@ -14,6 +14,8 @@
 #include "d/d_s_play.h"
 #include "f_op/f_op_actor_enemy.h"
 #include "f_op/f_op_camera_mng.h"
+#include "dusk/frame_interpolation.h"
+#include "dusk/settings.h"
 #include <cstring>
 
 class daE_S1_HIO_c {
@@ -99,6 +101,25 @@ static void anm_init(e_s1_class* i_this, int i_resNo, f32 i_morf, u8 i_attr, f32
     i_this->mAnm = i_resNo;
 }
 
+#if TARGET_PC
+static void daE_S1_interp_callback(bool isSimFrame, void* pUserWork) {
+    e_s1_class* i_this = (e_s1_class*)pUserWork;
+    if (!i_this->mHairInterpPrevValid || !i_this->mHairInterpCurrValid) {
+        return;
+    }
+    const f32 alpha = dusk::frame_interp::get_interpolation_step();
+    for (int s = 0; s < e_s1_class::HAIR_STRAND_COUNT; s++) {
+        cXyz* dst = i_this->mLineMat.getPos(s);
+        for (int i = 0; i < e_s1_class::HAIR_SEGMENT_COUNT; i++) {
+            int idx = s * e_s1_class::HAIR_SEGMENT_COUNT + i;
+            const cXyz& p0 = i_this->mHairInterpPrev[idx];
+            const cXyz& p1 = i_this->mHairInterpCurr[idx];
+            dst[i] = p0 + (p1 - p0) * alpha;
+        }
+    }
+}
+#endif
+
 static int daE_S1_Draw(e_s1_class* i_this) {
     if (i_this->field_0x306c != 0) {
         return 1;
@@ -132,6 +153,22 @@ static int daE_S1_Draw(e_s1_class* i_this) {
     i_this->mLineMat.update(16, line_color, &i_this->tevStr);
     dComIfGd_set3DlineMatDark(&i_this->mLineMat);
 
+#if TARGET_PC
+    if (dusk::getSettings().game.enableFrameInterpolation) {
+        if (i_this->mHairInterpCurrValid) {
+            memcpy(i_this->mHairInterpPrev, i_this->mHairInterpCurr, sizeof(i_this->mHairInterpCurr));
+            i_this->mHairInterpPrevValid = true;
+        }
+        for (int s = 0; s < e_s1_class::HAIR_STRAND_COUNT; s++) {
+            cXyz* src = i_this->mLineMat.getPos(s);
+            memcpy(&i_this->mHairInterpCurr[s * e_s1_class::HAIR_SEGMENT_COUNT], src,
+                   e_s1_class::HAIR_SEGMENT_COUNT * sizeof(cXyz));
+        }
+        i_this->mHairInterpCurrValid = true;
+        dusk::frame_interp::add_interpolation_callback(&daE_S1_interp_callback, i_this);
+    }
+#endif
+
     dComIfGd_setList();
     return 1;
 }
@@ -2149,6 +2186,11 @@ static int daE_S1_Create(fopAc_ac_c* i_this) {
             return cPhs_ERROR_e;
         }
 
+#if TARGET_PC
+        a_this->mHairInterpPrevValid = false;
+        a_this->mHairInterpCurrValid = false;
+#endif
+
         OS_REPORT("//////////////E_S1 SET 2 !!\n");
 
         if (path_no != 0xFF) {

src/d/actor/d_a_e_yd.cpp

@@ -12,6 +12,10 @@
 #include "d/d_cc_uty.h"
 #include "f_op/f_op_actor_enemy.h"
 
+#if TARGET_PC
+#include "dusk/frame_interpolation.h"
+#endif
+
 class daE_YD_HIO_c {
 public:
     daE_YD_HIO_c();
@@ -73,6 +77,22 @@ static s32 leaf_anm_init(e_yd_class* i_this, int param_1, f32 param_2, u8 param_
     return false;
 }
 
+#if TARGET_PC
+static void daE_YD_interp_callback(bool isSimFrame, void* pUserWork) {
+    e_yd_class* i_this = (e_yd_class*)pUserWork;
+    if (!i_this->mLineMatInterpPrevValid || !i_this->mLineMatInterpCurrValid) {
+        return;
+    }
+    const f32 alpha = dusk::frame_interp::get_interpolation_step();
+    cXyz* dst = i_this->mLineMat.getPos(0);
+    for (int i = 0; i < 12; i++) {
+        const cXyz& p0 = i_this->mLineMatInterpPrev[i];
+        const cXyz& p1 = i_this->mLineMatInterpCurr[i];
+        dst[i] = p0 + (p1 - p0) * alpha;
+    }
+}
+#endif
+
 static s32 daE_YD_Draw(e_yd_class* i_this) {
     static GXColor l_color = { 0x14, 0x0F, 0x00, 0xFF };
 
@@ -86,6 +106,17 @@ static s32 daE_YD_Draw(e_yd_class* i_this) {
     i_this->mpMorf->entryDL();
     i_this->mLineMat.update(12, l_color, &i_this->actor.tevStr);
     dComIfGd_set3DlineMat(&i_this->mLineMat);
+#if TARGET_PC
+    if (dusk::getSettings().game.enableFrameInterpolation) {
+        if (i_this->mLineMatInterpCurrValid) {
+            memcpy(i_this->mLineMatInterpPrev, i_this->mLineMatInterpCurr, sizeof(i_this->mLineMatInterpCurr));
+            i_this->mLineMatInterpPrevValid = true;
+        }
+        memcpy(i_this->mLineMatInterpCurr, i_this->mLineMat.getPos(0), 12 * sizeof(cXyz));
+        i_this->mLineMatInterpCurrValid = true;
+        dusk::frame_interp::add_interpolation_callback(&daE_YD_interp_callback, i_this);
+    }
+#endif
     for (s32 i = 1; i < 11; i++) {
         if (i_this->field_0x77c[i] != 0) {
             g_env_light.setLightTevColorType_MAJI(i_this->field_0x77c[i], &i_this->actor.tevStr);

src/d/actor/d_a_e_yg.cpp

@@ -10,6 +10,8 @@
 #include "f_op/f_op_kankyo_mng.h"
 #include "d/actor/d_a_obj_carry.h"
 #include "Z2AudioLib/Z2Instances.h"
+#include "dusk/frame_interpolation.h"
+#include "dusk/settings.h"
 #include "f_op/f_op_actor_enemy.h"
 
 enum E_yg_RES_File_ID {
@@ -134,7 +136,26 @@ static BOOL pl_check(e_yg_class* i_this, f32 i_dist) {
     return FALSE;
 }
 
-static int daE_YG_Draw(e_yg_class* i_this) {    
+#if TARGET_PC
+static void daE_YG_interp_callback(bool isSimFrame, void* pUserWork) {
+    e_yg_class* i_this = (e_yg_class*)pUserWork;
+    if (!i_this->mTentacleInterpPrevValid || !i_this->mTentacleInterpCurrValid) {
+        return;
+    }
+    const f32 alpha = dusk::frame_interp::get_interpolation_step();
+    for (int s = 0; s < e_yg_class::TENTACLE_STRAND_COUNT; s++) {
+        cXyz* dst = i_this->mLineMat.getPos(s);
+        for (int i = 0; i < e_yg_class::TENTACLE_SEGMENT_COUNT; i++) {
+            int idx = s * e_yg_class::TENTACLE_SEGMENT_COUNT + i;
+            const cXyz& p0 = i_this->mTentacleInterpPrev[idx];
+            const cXyz& p1 = i_this->mTentacleInterpCurr[idx];
+            dst[i] = p0 + (p1 - p0) * alpha;
+        }
+    }
+}
+#endif
+
+static int daE_YG_Draw(e_yg_class* i_this) {
     if (i_this->mDispFlag) {
         return 1;
     }
@@ -160,6 +181,23 @@ static int daE_YG_Draw(e_yg_class* i_this) {
     color.a = 0xFF;
     i_this->mLineMat.update(10, color, &actor->tevStr);
     dComIfGd_set3DlineMatDark(&i_this->mLineMat);
+
+#if TARGET_PC
+    if (dusk::getSettings().game.enableFrameInterpolation) {
+        if (i_this->mTentacleInterpCurrValid) {
+            memcpy(i_this->mTentacleInterpPrev, i_this->mTentacleInterpCurr, sizeof(i_this->mTentacleInterpCurr));
+            i_this->mTentacleInterpPrevValid = true;
+        }
+        for (int s = 0; s < e_yg_class::TENTACLE_STRAND_COUNT; s++) {
+            cXyz* src = i_this->mLineMat.getPos(s);
+            memcpy(&i_this->mTentacleInterpCurr[s * e_yg_class::TENTACLE_SEGMENT_COUNT], src,
+                   e_yg_class::TENTACLE_SEGMENT_COUNT * sizeof(cXyz));
+        }
+        i_this->mTentacleInterpCurrValid = true;
+        dusk::frame_interp::add_interpolation_callback(&daE_YG_interp_callback, i_this);
+    }
+#endif
+
     dComIfGd_setList();
 
     return 1;
@@ -1378,6 +1416,11 @@ static cPhs_Step daE_YG_Create(fopAc_ac_c* actor) {
             return cPhs_ERROR_e;
         }
 
+#if TARGET_PC
+        i_this->mTentacleInterpPrevValid = false;
+        i_this->mTentacleInterpCurrValid = false;
+#endif
+
         if (!hio_set) {
             i_this->mIsFirstSpawn = 1;
             hio_set = true;

src/d/actor/d_a_e_yh.cpp

@@ -12,6 +12,10 @@
 #include "f_op/f_op_actor_enemy.h"
 #include "f_op/f_op_kankyo_mng.h"
 
+#if TARGET_PC
+#include "dusk/frame_interpolation.h"
+#endif
+
 class daE_YH_HIO_c : public JORReflexible {
 public:
     daE_YH_HIO_c();
@@ -85,6 +89,22 @@ static BOOL leaf_anm_init(e_yh_class* i_this, int param_2, f32 param_3, u8 param
     return FALSE;
 }
 
+#if TARGET_PC
+static void daE_YH_interp_callback(bool isSimFrame, void* pUserWork) {
+    e_yh_class* i_this = (e_yh_class*)pUserWork;
+    if (!i_this->mLineInterpPrevValid || !i_this->mLineInterpCurrValid) {
+        return;
+    }
+    const f32 alpha = dusk::frame_interp::get_interpolation_step();
+    cXyz* dst = i_this->mLine.getPos(0);
+    for (int i = 0; i < 12; i++) {
+        const cXyz& p0 = i_this->mLineInterpPrev[i];
+        const cXyz& p1 = i_this->mLineInterpCurr[i];
+        dst[i] = p0 + (p1 - p0) * alpha;
+    }
+}
+#endif
+
 static int daE_YH_Draw(e_yh_class* i_this) {
     fopAc_ac_c* a_this = (fopAc_ac_c*)i_this;
 
@@ -114,6 +134,17 @@ static int daE_YH_Draw(e_yh_class* i_this) {
 
     i_this->mLine.update(12, l_color, &a_this->tevStr);
     dComIfGd_set3DlineMat(&i_this->mLine);
+#if TARGET_PC
+    if (dusk::getSettings().game.enableFrameInterpolation) {
+        if (i_this->mLineInterpCurrValid) {
+            memcpy(i_this->mLineInterpPrev, i_this->mLineInterpCurr, sizeof(i_this->mLineInterpCurr));
+            i_this->mLineInterpPrevValid = true;
+        }
+        memcpy(i_this->mLineInterpCurr, i_this->mLine.getPos(0), 12 * sizeof(cXyz));
+        i_this->mLineInterpCurrValid = true;
+        dusk::frame_interp::add_interpolation_callback(&daE_YH_interp_callback, i_this);
+    }
+#endif
 
     for (int i = 1; i < 11; i++) {
         if (i_this->mModels[i] != NULL) {

src/d/actor/d_a_mg_fshop.cpp

@@ -729,10 +729,12 @@ static void koro2_game(fshop_class* i_this) {
         cLib_addCalcAngleS2(&i_this->field_0x4020.z, 0, 2, 0x200);
     case 2:
 #if TARGET_PC
-        if (dusk::getSettings().game.enableGyroRollgoal) {
+        if (dusk::gyro::rollgoal_gyro_enabled()) {
             if (!dusk::gyro::get_sensor_keep_alive()) {
                 dusk::gyro::set_sensor_keep_alive(true);
             }
+        } else if (dusk::gyro::get_sensor_keep_alive()) {
+            dusk::gyro::set_sensor_keep_alive(false);
         }
 #endif
 
@@ -753,7 +755,7 @@ static void koro2_game(fshop_class* i_this) {
             old_stick_x = mDoCPd_c::getSubStickX(PAD_1);
             cLib_addCalcAngleS2(&i_this->field_0x4060, i_this->field_0x4062, 4, 0x1000);
 #if TARGET_PC
-            if (dusk::getSettings().game.enableGyroRollgoal) {
+            if (dusk::gyro::rollgoal_gyro_enabled()) {
                 dusk::gyro::rollgoalTick(true, i_this->field_0x4060);
             }
 #endif
@@ -791,7 +793,7 @@ static void koro2_game(fshop_class* i_this) {
             s16 gyro_ax = 0;
             s16 gyro_az = 0;
 #if TARGET_PC
-            if (dusk::getSettings().game.enableGyroRollgoal) {
+            if (dusk::gyro::rollgoal_gyro_enabled()) {
                 dusk::gyro::rollgoalTableOffset(gyro_ax, gyro_az);
             }
 #endif

src/d/actor/d_a_midna.cpp

@@ -419,9 +419,30 @@ int daMidna_c::createHeap() {
             return 0;
         }
 
+#if TARGET_PC
+        if (mpDemoFCTongueBmd != NULL) {
+            if(!daAlink_c::initDemoBck(&mpDemoFCTmpBck, "demo00_Midna_cut00_FC_tmp.bck")) {
+                return 0;
+            }
+
+            // Update Midna's eye maxLOD to prevent the eyes from disappearing
+            J3DTexture* tex = mpDemoFCTongueBmd->getModelData()->getTexture();
+            JUTNameTab* nametable = mpDemoFCTongueBmd->getModelData()->getTextureName();
+            if (tex != nullptr && nametable != nullptr) {
+                for (u16 i = 0; i < tex->getNum(); i++) {
+                    const char* tex_name = nametable->getName(i);
+                    if (tex_name != NULL && strcmp(tex_name, "midona_eyeball") == 0) {
+                        ResTIMG* timg = tex->getResTIMG(i);
+                        timg->maxLOD = 0;
+                    }
+                }
+            }
+        }
+#else
         if (mpDemoFCTongueBmd != NULL && !daAlink_c::initDemoBck(&mpDemoFCTmpBck, "demo00_Midna_cut00_FC_tmp.bck")) {
             return 0;
         }
+#endif
 
         modelData =
             (J3DModelData*)dComIfG_getObjectRes(dStage_roomControl_c::getDemoArcName(), "demo00_Midna_cut00_BD_tmp.bmd");
@@ -433,6 +454,21 @@ int daMidna_c::createHeap() {
 
             modelData->getMaterialNodePointer(2)->setMaterialAnm(mpEyeMatAnm[0]);
             modelData->getMaterialNodePointer(3)->setMaterialAnm(mpEyeMatAnm[1]);
+
+#if TARGET_PC
+            // Update Midna's eye maxLOD to prevent the eyes from disappearing
+            J3DTexture* tex = modelData->getTexture();
+            JUTNameTab* nametable = modelData->getTextureName();
+            if (tex != nullptr && nametable != nullptr) {
+                for (u16 i = 0; i < tex->getNum(); i++) {
+                    const char* tex_name = nametable->getName(i);
+                    if (tex_name != NULL && strcmp(tex_name, "midona_eyeball") == 0) {
+                        ResTIMG* timg = tex->getResTIMG(i);
+                        timg->maxLOD = 0;
+                    }
+                }
+            }
+#endif
         }
 
         if (!initDemoModel(&mpDemoBDMaskBmd, "demo00_Midna_cut00_BD_mask.bmd", 0)) {

src/d/actor/d_a_obj_fchain.cpp

@@ -10,6 +10,8 @@
 #include "JSystem/J3DGraphBase/J3DDrawBuffer.h"
 #include "SSystem/SComponent/c_math.h"
 #include "d/d_com_inf_game.h"
+#include "dusk/frame_interpolation.h"
+#include "dusk/settings.h"
 #include <cstring>
 
 static char const l_arcName[] = "Fchain";
@@ -65,6 +67,10 @@ int daObjFchain_c::create() {
             local_48++;
         }
         rv = cPhs_COMPLEATE_e;
+#if TARGET_PC
+        mChainInterpPrevValid = false;
+        mChainInterpCurrValid = false;
+#endif
         break;
     }
     return rv;
@@ -289,6 +295,26 @@ void daObjFchain_shape_c::draw() {
     }
 }
 
+#if TARGET_PC
+static void fchain_interp_callback(bool isSimFrame, void* pUserWork) {
+    static_cast<daObjFchain_c*>(pUserWork)->onInterpCallback();
+}
+
+void daObjFchain_c::onInterpCallback() {
+    if (!mChainInterpPrevValid || !mChainInterpCurrValid) {
+        return;
+    }
+
+    const f32 alpha = dusk::frame_interp::get_interpolation_step();
+
+    for (int i = 0; i < CHAIN_COUNT; i++) {
+        const cXyz& p0 = mChainInterpPrev[i];
+        const cXyz& p1 = mChainInterpCurr[i];
+        field_0x694[i] = p0 + (p1 - p0) * alpha;
+    }
+}
+#endif
+
 int daObjFchain_c::draw() {
     if (field_0x584 != 0) {
         g_env_light.settingTevStruct(0, &current.pos, &tevStr);
@@ -297,6 +323,19 @@ int daObjFchain_c::draw() {
             return 1;
         }
         dComIfGd_getOpaListDark()->entryImm(&mShape, 0);
+
+#if TARGET_PC
+        if (dusk::getSettings().game.enableFrameInterpolation) {
+            if (mChainInterpCurrValid) {
+                memcpy(mChainInterpPrev, mChainInterpCurr, sizeof(mChainInterpCurr));
+                mChainInterpPrevValid = true;
+            }
+
+            memcpy(mChainInterpCurr, field_0x694, sizeof(mChainInterpCurr));
+            mChainInterpCurrValid = true;
+            dusk::frame_interp::add_interpolation_callback(&fchain_interp_callback, this);
+        }
+#endif
     }
     return 1;
 }

src/d/d_menu_letter.cpp

@@ -965,7 +965,8 @@ void dMenu_Letter_c::screenSetBase() {
     }
     if (field_0x374 > 1) {
         J2DPane* pJVar6 = mpBaseScreen->search('pi_n');
-        f32 dVar18 = field_0x1f0[1]->getBounds().i.x - field_0x1f0[0]->getBounds().i.x;
+        f32 x1 = field_0x1f0[1]->getBounds().i.x;
+        f32 dVar18 = x1 - field_0x1f0[0]->getBounds().i.x;
         f32 dVar17 = dVar18 * (field_0x374 - 1);
         f32 dVar16 = (pJVar6->getWidth() / 2) - (dVar17 / 2);
         for (int i = 0; i < 9; i++) {

src/d/d_msg_object.cpp

@@ -427,14 +427,15 @@ static void dummyStrings() {
 dMsgObject_HIO_c g_MsgObject_HIO_c;
 
 int dMsgObject_c::_execute() {
-#if TARGET_PC
+// TODO: enabling wii message overrides fixes direction text, but gives wrong item control text
+/*#if TARGET_PC
     if (dusk::getSettings().game.enableMirrorMode) {
         // enable wii message index override
         g_MsgObject_HIO_c.mMessageDisplay = 1;
     } else if (!dusk::getSettings().game.enableMirrorMode && g_MsgObject_HIO_c.mMessageDisplay == 1) {
         g_MsgObject_HIO_c.mMessageDisplay = 0;
     }
-#endif
+#endif*/
 
 
     field_0x4c7 = 0;