Update aurora

Frame interp: Fix dmap scroll arrows

include/d/d_menu_dmap.h

@@ -103,6 +103,10 @@ public:
         field_0xd98 = param_1;
     }
 
+#if TARGET_PC
+    void resetScrollArrowMask() { field_0xdda = 0; }
+#endif
+
     /* 0xC98 */ JKRExpHeap* mpHeap;
     /* 0xC9C */ JKRExpHeap* mpTalkHeap;
     /* 0xCA0 */ STControl* mpStick;

include/dusk/frame_interpolation.h

@@ -16,6 +16,7 @@ void ensure_initialized();
 
 void begin_record();
 void end_record();
+void begin_sim_tick();
 void begin_frame(bool enabled, bool is_sim_frame, float step);
 void interpolate();
 float get_interpolation_step();

include/dusk/game_clock.h

@@ -1,13 +1,8 @@
-#ifndef DUSK_GAME_CLOCK_H
-#define DUSK_GAME_CLOCK_H
+#pragma once
 
-#include <stddef.h>
-
-namespace dusk {
-namespace game_clock {
+namespace dusk::game_clock {
 
 void ensure_initialized();
-void reset_accumulator();
 void reset_frame_timer();
 
 constexpr float sim_pace() { return 1.0f / 30.0f; }
@@ -18,16 +13,14 @@ constexpr float ui_initial_dt() { return 1.0f / 60.0f; }
 struct MainLoopPacer {
     float presentation_dt_seconds;
     bool is_interpolating;
-    bool do_sim_tick;
-    float interpolation_step;
+    int sim_ticks_to_run;
     float sim_pace;
 };
 
 MainLoopPacer advance_main_loop();
+void commit_sim_tick();
+float sample_interpolation_step();
 
 float consume_interval(const void* consumer);
 
-}  // namespace game_clock
-}  // namespace dusk
-
-#endif  // DUSK_GAME_CLOCK_H
+} // namespace dusk::game_clock

include/dusk/settings.h

@@ -101,6 +101,7 @@ struct UserSettings {
         ConfigVar<bool> infiniteOil;
         ConfigVar<bool> infiniteOxygen;
         ConfigVar<bool> infiniteRupees;
+        ConfigVar<bool> enableIndefiniteItemDrops;
         ConfigVar<bool> moonJump;
         ConfigVar<bool> superClawshot;
         ConfigVar<bool> alwaysGreatspin;

include/dusk/time.h

@@ -1,9 +1,10 @@
 #ifndef DUSK_TIME_H
 #define DUSK_TIME_H
 
-#include <chrono>
-#include <numeric>
 #include <array>
+#include <numeric>
+
+#include "SDL3/SDL_timer.h"
 
 #ifdef _WIN32
 #ifndef WIN32_LEAN_AND_MEAN
@@ -15,28 +16,26 @@
 #include <Windows.h>
 #include <shellapi.h>
 #include <intrin.h>
-#else
-#include "SDL3/SDL_timer.h"
 #endif
 
 class Limiter {
-  using delta_clock = std::chrono::high_resolution_clock;
-  using duration_t = std::chrono::nanoseconds;
-
 public:
-  void Reset() { m_oldTime = delta_clock::now(); }
+  using duration_t = Uint64;
+
+  void Reset() { m_oldTime = SDL_GetTicksNS(); }
 
   void Sleep(duration_t targetFrameTime) {
-    if (targetFrameTime.count() == 0) {
+    if (targetFrameTime == 0) {
       return;
     }
 
-    auto start = delta_clock::now();
+    const Uint64 start = SDL_GetTicksNS();
     duration_t adjustedSleepTime = SleepTime(targetFrameTime);
-    if (adjustedSleepTime.count() > 0) {
+    if (adjustedSleepTime > 0) {
       NanoSleep(adjustedSleepTime);
-      duration_t overslept = TimeSince(start) - adjustedSleepTime;
-      if (overslept < duration_t{targetFrameTime}) {
+      const duration_t elapsed = TimeSince(start);
+      const duration_t overslept = elapsed > adjustedSleepTime ? elapsed - adjustedSleepTime : 0;
+      if (overslept < targetFrameTime) {
         m_overheadTimes[m_overheadTimeIdx] = overslept;
         m_overheadTimeIdx = (m_overheadTimeIdx + 1) % m_overheadTimes.size();
       }
@@ -45,23 +44,23 @@ public:
   }
 
   duration_t SleepTime(duration_t targetFrameTime) {
-    const auto sleepTime = duration_t{targetFrameTime} - TimeSince(m_oldTime);
-    m_overhead = std::accumulate(m_overheadTimes.begin(), m_overheadTimes.end(), duration_t{}) / m_overheadTimes.size();
+    const duration_t elapsed = TimeSince(m_oldTime);
+    const duration_t sleepTime = elapsed < targetFrameTime ? targetFrameTime - elapsed : 0;
+    m_overhead = std::accumulate(m_overheadTimes.begin(), m_overheadTimes.end(), duration_t{0}) /
+                 m_overheadTimes.size();
     if (sleepTime > m_overhead) {
       return sleepTime - m_overhead;
     }
-    return duration_t{0};
+    return 0;
   }
 
 private:
-  delta_clock::time_point m_oldTime;
+  Uint64 m_oldTime = 0;
   std::array<duration_t, 4> m_overheadTimes{};
   size_t m_overheadTimeIdx = 0;
-  duration_t m_overhead = duration_t{0};
+  duration_t m_overhead = 0;
 
-  duration_t TimeSince(delta_clock::time_point start) {
-    return std::chrono::duration_cast<duration_t>(delta_clock::now() - start);
-  }
+  duration_t TimeSince(Uint64 start) const { return SDL_GetTicksNS() - start; }
 
 #if _WIN32
   void NanoSleep(const duration_t duration) {
@@ -85,9 +84,10 @@ private:
 
     LARGE_INTEGER start, current;
     QueryPerformanceCounter(&start);
-    LONGLONG ticksToWait = static_cast<LONGLONG>(duration.count() * countPerNs);
-    if (DWORD ms = std::chrono::duration_cast<std::chrono::milliseconds>(duration).count(); ms > 1) {
-      ::Sleep(ms - 1);
+    const LONGLONG ticksToWait = static_cast<LONGLONG>(duration * countPerNs);
+    const Uint64 ms = duration / 1'000'000ULL;
+    if (ms > 1) {
+      ::Sleep(static_cast<DWORD>(ms - 1));
     }
     do {
       QueryPerformanceCounter(&current);
@@ -99,7 +99,7 @@ private:
     } while (current.QuadPart - start.QuadPart < ticksToWait);
   }
 #else
-  void NanoSleep(const duration_t duration) { SDL_DelayPrecise(duration.count()); }
+  void NanoSleep(const duration_t duration) { SDL_DelayPrecise(duration); }
 #endif
 };
 

libs/JSystem/src/JFramework/JFWDisplay.cpp

@@ -368,11 +368,11 @@ constexpr auto FRAME_PERIOD = std::chrono::duration_cast<std::chrono::nanosecond
     std::chrono::duration<double>(1001.0 / 30000.0));
 constexpr auto RETRACE_PERIOD = FRAME_PERIOD / 2;
 
-static void waitPrecise(Limiter& limiter, Uint64 targetNs) {
-    const auto sleepTime = limiter.SleepTime(std::chrono::nanoseconds(targetNs));
+static void waitPrecise(Limiter& limiter, Limiter::duration_t targetNs) {
+    const auto sleepTime = limiter.SleepTime(targetNs);
     dusk::frameUsagePct =
-        100.0f * (1.0f - static_cast<float>(sleepTime.count()) / static_cast<float>(targetNs));
-    limiter.Sleep(std::chrono::nanoseconds(targetNs));
+        100.0f * (1.0f - static_cast<float>(sleepTime) / static_cast<float>(targetNs));
+    limiter.Sleep(targetNs);
 }
 #endif
 

src/Z2AudioLib/Z2WolfHowlMgr.cpp

@@ -117,8 +117,8 @@ static Z2WolfHowlLine sNewSong3[9] = {
 
 #if TARGET_PC
 static Z2WolfHowlLine sHowlTimeSong[6] = {
-    {HOWL_LINE_MID, 20}, {HOWL_LINE_LOW, 20}, {HOWL_LINE_HIGH, 40},
-    {HOWL_LINE_MID, 20}, {HOWL_LINE_LOW, 20}, {HOWL_LINE_HIGH, 40},
+    {HOWL_LINE_MID, 15}, {HOWL_LINE_LOW, 15}, {HOWL_LINE_HIGH, 30},
+    {HOWL_LINE_MID, 15}, {HOWL_LINE_LOW, 15}, {HOWL_LINE_HIGH, 30},
 };
 #endif
 
@@ -368,9 +368,9 @@ void Z2WolfHowlMgr::setCorrectData(s8 curveID, Z2WolfHowlData* data) {
         break;
     #if TARGET_PC
     case Z2WOLFHOWL_TIMESONG:
-        cPitchUp = 1.259906f;
-        cPitchCenter = 0.94387f;
-        cPitchDown = 0.840885f;
+        cPitchUp = 1.3348f;
+        cPitchCenter = 1.0f;
+        cPitchDown = 0.7937f;
         break;
     #endif
     default:

src/d/actor/d_a_alink_dusk.cpp

@@ -154,6 +154,7 @@ bool daAlink_c::checkGyroAimContext() {
     case PROC_BOW_SUBJECT:
     case PROC_BOOMERANG_SUBJECT:
     case PROC_COPY_ROD_SUBJECT:
+    case PROC_HAWK_SUBJECT:
     case PROC_HOOKSHOT_SUBJECT:
     case PROC_SWIM_HOOKSHOT_SUBJECT:
     case PROC_HORSE_BOW_SUBJECT:

src/d/actor/d_a_b_bq.cpp

@@ -2059,7 +2059,15 @@ static void demo_camera(b_bq_class* i_this) {
                 for (int i = 0; i < 5; i++) {
                     static u16 g_e_i[] = {0x83EB, 0x83EC, 0x83ED, 0x83EE, 0x83EF};
 
-                    dComIfGp_particle_set(g_e_i[i], &pos, NULL, NULL);
+                    #if TARGET_PC
+                    if (i == 0) {
+                        static const cXyz effWideScale = {mDoGph_gInf_c::getAspect(), 1.0f, 1.0f};
+                        dComIfGp_particle_set(g_e_i[i], &pos, NULL, &effWideScale);
+                    } else
+                    #endif
+                    {
+                        dComIfGp_particle_set(g_e_i[i], &pos, NULL, NULL);
+                    }
                 }
 
                 i_this->mSound.startCreatureSound(Z2SE_EN_BOSS_CONVERGE, 0, 0);

src/d/actor/d_a_b_ob.cpp

@@ -2725,7 +2725,16 @@ static void demo_camera(b_ob_class* i_this) {
 
             for (int i = 0; i < 5; i++) {
                 static u16 ex_eff[] = {dPa_RM(ID_ZI_S_OI_CONVERGE_FILTER), dPa_RM(ID_ZI_S_OI_CONVERGE_FILTEROUT), dPa_RM(ID_ZI_S_OI_CONVERGE_HIDE), dPa_RM(ID_ZI_S_OI_CONVERGE_POLYGON_A), dPa_RM(ID_ZI_S_OI_CONVERGE_POLYGON_B)};
-                dComIfGp_particle_set(ex_eff[i], &room_pos, NULL, &sc);
+
+                #if TARGET_PC
+                if (i == 0) {
+                    static const cXyz effWideScale = {mDoGph_gInf_c::getAspect() * 10.0f, 10.0f, 10.0f};
+                    dComIfGp_particle_set(ex_eff[i], &room_pos, NULL, &effWideScale);
+                } else
+                #endif
+                {
+                    dComIfGp_particle_set(ex_eff[i], &room_pos, NULL, &sc);
+                }
             }
 
             i_this->mDemoCamEye.set(-4820.0f, -18600.0f, -510.0f);

src/d/actor/d_a_e_fm.cpp

@@ -1677,7 +1677,16 @@ static void demo_camera(e_fm_class* i_this) {
         cXyz spBC(0.0f, 0.0f, 0.0f);
         for (int i = 0; i < 4; i++) {
             static u16 g_e_i[] = {0x847B, 0x847C, 0x847D, 0x847E};
-            dComIfGp_particle_set(g_e_i[i], &spBC, NULL, NULL);
+
+            #if TARGET_PC
+            if (i == 0) {
+                static const cXyz effWideScale = {mDoGph_gInf_c::getAspect(), 1.0f, 1.0f};
+                dComIfGp_particle_set(g_e_i[i], &spBC, NULL, &effWideScale);
+            } else
+            #endif
+            {
+                dComIfGp_particle_set(g_e_i[i], &spBC, NULL, NULL);
+            }
         }
 
         i_this->mDemoCamFovy = 55.0f + NREG_F(10);

src/d/actor/d_a_mg_fshop.cpp

@@ -761,6 +761,11 @@ static void koro2_game(fshop_class* i_this) {
             sp5C.x = mDoCPd_c::getStickX3D(PAD_1);
             sp5C.y = 0.0f;
             sp5C.z = mDoCPd_c::getStickY(PAD_1);
+#if TARGET_PC
+            if (dusk::getSettings().game.enableMirrorMode) {
+                sp5C.x = -sp5C.x;
+            }
+#endif
             MtxPosition(&sp5C, &sp68);
 
             f32 reg_f31 = sp68.x;
@@ -782,20 +787,15 @@ static void koro2_game(fshop_class* i_this) {
                 reg_f30 = 0.0f;
             }
 
+            s16 gyro_ax = 0;
+            s16 gyro_az = 0;
 #if TARGET_PC
             if (dusk::getSettings().game.enableGyroRollgoal) {
-                s16 rg_add_x;
-                s16 rg_add_z;
-                dusk::gyro::rollgoalTableOffset(rg_add_x, rg_add_z);
-                s16 tgt_x = static_cast<s16>(reg_f30 * (-6000.0f + JREG_F(7))) + rg_add_x;
-                s16 tgt_z = static_cast<s16>(reg_f31 * (-6000.0f + JREG_F(8))) + rg_add_z;
-                cLib_addCalcAngleS2(&i_this->field_0x4020.x, tgt_x, 4, 0x200);
-                cLib_addCalcAngleS2(&i_this->field_0x4020.z, tgt_z, 4, 0x200);
+                dusk::gyro::rollgoalTableOffset(gyro_ax, gyro_az);
             }
-#else
-            cLib_addCalcAngleS2(&i_this->field_0x4020.x, reg_f30 * (-6000.0f + JREG_F(7)), 4, 0x200);
-            cLib_addCalcAngleS2(&i_this->field_0x4020.z, reg_f31 * (-6000.0f + JREG_F(8)), 4, 0x200);
 #endif
+            cLib_addCalcAngleS2(&i_this->field_0x4020.x, reg_f30 * (-6000.0f + JREG_F(7)) + gyro_ax, 4, 0x200);
+            cLib_addCalcAngleS2(&i_this->field_0x4020.z, reg_f31 * (-6000.0f + JREG_F(8)) + gyro_az, 4, 0x200);
         }
 #if TARGET_PC
         if (i_this->field_0x4010 != 2) {

src/d/actor/d_a_mirror.cpp

@@ -30,6 +30,10 @@ static char* l_arcName = "Mirror";
 static char* l_arcName2 = "MR-Table";
 
 dMirror_packet_c::dMirror_packet_c() {
+#ifdef TARGET_PC
+    GXInitTexObj(&mTexObj, nullptr, 0, 0, static_cast<GXTexFmt>(-1), GX_MAX_TEXWRAPMODE,
+                 GX_MAX_TEXWRAPMODE, GX_FALSE);
+#endif
     reset();
 }
 

src/d/actor/d_a_obj_item.cpp

@@ -390,6 +390,9 @@ void daItem_c::procMainNormal() {
         cLib_chaseF(&scale.z, mItemScale.z, step_z);
     }
 
+    #if TARGET_PC
+    if (!dusk::getSettings().game.enableIndefiniteItemDrops) {
+    #endif
     if (mWaitTimer == 0) {
         if (mDisappearTimer == 0) {
             deleteItem();
@@ -399,6 +402,9 @@ void daItem_c::procMainNormal() {
             changeDraw();
         }
     }
+    #if TARGET_PC
+    }
+    #endif
 
     mCcCyl.SetC(current.pos);
     dComIfG_Ccsp()->Set(&mCcCyl);
@@ -1058,9 +1064,16 @@ int daItem_c::CountTimer() {
     if (checkCountTimer()) {
         if (mWaitTimer > 0) {
             mWaitTimer--;
-        } else if (mDisappearTimer > 0) {
+        }
+        #if TARGET_PC
+        else if (!dusk::getSettings().game.enableIndefiniteItemDrops && mDisappearTimer > 0) {
             mDisappearTimer--;
         }
+        #else
+        else if (mDisappearTimer > 0) {
+            mDisappearTimer--;
+        }
+        #endif
     }
 
     cLib_calcTimer<u8>(&mBoomWindTgTimer);

src/d/actor/d_flower.inc

@@ -699,8 +699,8 @@ void dFlower_packet_c::draw() {
                 if (!cLib_checkBit<u8>(sp44->m_state, 4) && !cLib_checkBit<u8>(sp44->m_state, 0x40)) {
 #ifdef TARGET_PC
                     Mtx flower_mtx;
-                    if (dusk::frame_interp::lookup_replacement(reinterpret_cast<const void*>(&sp44->m_modelMtx), flower_mtx)) {
-                        
+                    if (dusk::frame_interp::lookup_replacement(&sp44->m_modelMtx, flower_mtx)) {
+                        cMtx_concat(j3dSys.getViewMtx(), flower_mtx, flower_mtx);
                         GXLoadPosMtxImm(flower_mtx, 0);
                     } else
 #endif
@@ -854,21 +854,18 @@ void dFlower_packet_c::draw() {
                 if (!cLib_checkBit<u8>(sp34->m_state, 4) && cLib_checkBit<u8>(sp34->m_state, 0x40)) {
 #ifdef TARGET_PC
                     Mtx flower_mtx;
-                    if (dusk::frame_interp::lookup_replacement(reinterpret_cast<const void*>(&sp34->m_modelMtx), flower_mtx)) {
+                    if (dusk::frame_interp::lookup_replacement(&sp34->m_modelMtx, flower_mtx)) {
                         cMtx_concat(j3dSys.getViewMtx(), flower_mtx, flower_mtx);
                         GXLoadPosMtxImm(flower_mtx, 0);
-                    } else {
+                    } else
 #endif
+                    {
                         GXLoadPosMtxImm(sp34->m_modelMtx, 0);
-#ifdef TARGET_PC
                     }
-#endif
                     GXLoadNrmMtxImm(j3dSys.getViewMtx(), 0);
-
 #if TARGET_PC
                     GXLoadTexObj(&mTexObj_l_J_Ohana01_64128_0419TEX, GX_TEXMAP0);
 #endif
-
                     if (!cLib_checkBit<u8>(sp34->m_state, 8)) {
                         if (!cLib_checkBit<u8>(sp34->m_state, 0x10)) {
                             GXCallDisplayList(mp_Jhana01DL, m_Jhana01DL_size);
@@ -995,7 +992,7 @@ void dFlower_packet_c::update() {
                 mDoMtx_stack_c::scaleM(temp_f31, temp_f31, temp_f31);
                 cMtx_concat(j3dSys.getViewMtx(), temp_r28, data_p->m_modelMtx);
 #ifdef TARGET_PC
-                dusk::frame_interp::record_final_mtx(mDoMtx_stack_c::get(), data_p->m_modelMtx);
+                dusk::frame_interp::record_final_mtx(temp_r28, data_p->m_modelMtx);
 #endif
             }
         }

src/d/d_menu_dmap.cpp

@@ -21,6 +21,7 @@
 #include "d/d_msg_string.h"
 #include "d/d_meter_haihai.h"
 #include "d/d_menu_window.h"
+#include "dusk/settings.h"
 #include "f_op/f_op_msg_mng.h"
 #include "m_Do/m_Do_graphic.h"
 #include <cstring>
@@ -945,9 +946,15 @@ void dMenu_DmapBg_c::draw() {
         mpMeterHaihai->drawHaihai(field_0xdda,
             x1 + (local_224.x + local_218.x) / 2,
             y1 + (local_224.y + local_218.y) / 2,
-            -35.0f + (local_224.x - local_218.x), 
+            -35.0f + (local_224.x - local_218.x),
             -35.0f + (local_224.y - local_218.y));
+#if TARGET_PC
+        if (!dusk::getSettings().game.enableFrameInterpolation) {
+            field_0xdda = 0;
+        }
+#else
         field_0xdda = 0;
+#endif
     }
 
     dMenu_Dmap_c::myclass->drawFloorScreenTop(mFloorScreen, field_0xd94, field_0xd98, grafContext);
@@ -984,7 +991,36 @@ void dMenu_DmapBg_c::update() {
             JUT_ASSERT(2323, mpBackTexture != NULL);
 
             void* spec = mpArchive->getResource("spec/spec.dat");
+            #if TARGET_PC
+            struct dmap_spec {
+                /* 0x00 */ BE(f32) field_0x0;
+                /* 0x04 */ BE(f32) field_0x4;
+                /* 0x08 */ BE(f32) field_0x8;
+                /* 0x0C */ u8 field_0xc;
+                /* 0x0D */ u8 field_0xd;
+                /* 0x0E */ u8 field_0xe;
+                /* 0x0F */ u8 field_0xf;
+                /* 0x10 */ u8 field_0x10;
+                /* 0x11 */ u8 field_0x11;
+                /* 0x12 */ u8 field_0x12;
+                /* 0x13 */ u8 field_0x13;
+            };
+            dmap_spec* dspec = (dmap_spec*)spec;
+
+            field_0xd80 = dspec->field_0x0;
+            field_0xd84 = dspec->field_0x4;
+            field_0xd88 = dspec->field_0x8;
+            field_0xd8c = dspec->field_0xc;
+            field_0xd8d = dspec->field_0xd;
+            field_0xd8e = dspec->field_0xe;
+            field_0xd8f = dspec->field_0xf;
+            field_0xd90 = dspec->field_0x10;
+            field_0xd91 = dspec->field_0x11;
+            field_0xd92 = dspec->field_0x12;
+            field_0xd93 = dspec->field_0x13;
+            #else
             memcpy(&field_0xd80, spec, 20);
+            #endif
         }
     }
 
@@ -2545,6 +2581,11 @@ void dMenu_Dmap_c::zoomIn_proc() {
 }
 
 void dMenu_Dmap_c::zoomOut_init_proc() {
+#if TARGET_PC
+    if (dusk::getSettings().game.enableFrameInterpolation) {
+        mpDrawBg->resetScrollArrowMask();
+    }
+#endif
     Z2GetAudioMgr()->seStart(Z2SE_SY_MAP_ZOOMOUT, NULL, 0, 0, 1.0f, 1.0f, -1.0f, -1.0f, 0);
     mMapCtrl->initZoomOut(10);
     mpDrawBg->iconScaleAnmInit(1.0f, 0.0f, 10);

src/dusk/audio/DuskDsp.cpp

@@ -5,14 +5,15 @@
 
 #include <algorithm>
 #include <cassert>
+#include <cmath>
 #include <cstdio>
 #include <span>
 
 #include "Adpcm.hpp"
 #include "freeverb/revmodel.hpp"
-#include "JSystem/JAudio2/JASDriverIF.h"
 #include "dusk/audio/DuskAudioSystem.h"
 #include "dusk/endian.h"
+#include "dusk/logging.h"
 #include "global.h"
 #include "tracy/Tracy.hpp"
 
@@ -95,6 +96,13 @@ static void RenderChannel(
     ChannelAuxData& channelAux,
     OutputSubframe& subframe);
 
+static void RenderOutputChannel(
+    const JASDsp::TChannel& sourceChannel,
+    ChannelAuxData& aux,
+    OutputChannel outputChannel,
+    const std::span<f32> inputSamples,
+    OutputSubframe& fullOutputSubframe);
+
 /**
  * Converts a pitch value on a DSP channel to a sample rate.
  */
@@ -117,6 +125,8 @@ static void ResetChannel(JASDsp::TChannel& channel, ChannelAuxData& aux) {
     aux.resamplePos = 0.0;
     aux.resamplePrev = 0;
 
+    aux.oscPhase = 0;
+
     aux.prev_lp_out = 0.0f;
     aux.prev_lp_in = 0.0f;
 
@@ -141,6 +151,119 @@ static void MixSubframe(DspSubframe& dst, const DspSubframe& src) {
     }
 }
 
+enum class OscType : u16 {
+    SQUARE_WAVE_PW_50        = 0,
+    SAW_WAVE                 = 1,
+    SQUARE_WAVE_PW_25        = 3,
+    TRIANGLE_WAVE            = 4,
+    // idk what 5 and 6 are
+    SINE_WAVE                = 7,
+    // idk what 8 and 9 are
+    SINE_WAVE_VAR_STEP       = 10,
+    EVOLVING_HARMONIC        = 11,
+    EVOLVING_RAMP            = 12,
+};
+
+static s16 gEvolvingHarmonic[64];
+
+static void GenerateEvolvingHarmonic() {
+    static bool initialized = false;
+    if (!initialized) {
+        gEvolvingHarmonic[62] = 8191;
+        gEvolvingHarmonic[63] = 16383;
+        initialized = true;
+    }
+
+    u32 prev2 = (u32)gEvolvingHarmonic[62];
+    u32 prev1 = (u32)gEvolvingHarmonic[63];
+
+    for (int i = 0; i < 64; i += 2) {
+        u32 cur = (u32)gEvolvingHarmonic[i];
+        gEvolvingHarmonic[i] = (s16)((s32)(prev2 * prev1 - (cur << 16)) >> 16);
+        prev2 = prev1;
+        prev1 = cur;
+
+        cur = (u32)gEvolvingHarmonic[i + 1];
+        gEvolvingHarmonic[i + 1] = (s16)((s32)(2u * (prev2 * prev1 + (cur << 16))) >> 16);
+        prev2 = prev1;
+        prev1 = cur;
+    }
+}
+
+
+static void RenderOscChannel(
+    JASDsp::TChannel& channel,
+    ChannelAuxData& channelAux,
+    OutputSubframe& subframe) {
+    if (channel.mResetFlag)
+        ResetChannel(channel, channelAux);
+
+    const u32 pitch = channel.mPitch;
+    DspSubframe buf = {};
+    const auto oscType = static_cast<OscType>(channel.mBytesPerBlock);
+
+    switch (oscType) {
+    case OscType::SQUARE_WAVE_PW_50: {
+        std::generate(buf.begin(), buf.end(), [&] {
+            f32 s = channelAux.oscPhase < 0x8000u ? 0.5f : -0.5f;
+            channelAux.oscPhase += pitch >> 1;
+            return s;
+        });
+        break;
+    }
+    case OscType::SQUARE_WAVE_PW_25: {
+        std::generate(buf.begin(), buf.end(), [&] {
+            f32 s = channelAux.oscPhase < 0x4000u ? 0.5f : -0.5f;
+            channelAux.oscPhase += pitch >> 1;
+            return s;
+        });
+        break;
+    }
+    case OscType::SAW_WAVE:
+    case OscType::EVOLVING_RAMP: {
+        std::generate(buf.begin(), buf.end(), [&] {
+            f32 s = (f32)(s16)channelAux.oscPhase / 32768.0f;
+            channelAux.oscPhase += pitch >> 1;
+            return s;
+        });
+        break;
+    }
+    case OscType::SINE_WAVE:
+    case OscType::SINE_WAVE_VAR_STEP: {
+        std::generate(buf.begin(), buf.end(), [&] {
+            f32 s = sinf((f32)channelAux.oscPhase * (2.0f * M_PI / 65536.0f)) * 0.5f;
+            channelAux.oscPhase += pitch >> 1;
+            return s;
+        });
+        break;
+    }
+    case OscType::TRIANGLE_WAVE: {
+        std::generate(buf.begin(), buf.end(), [&] {
+            f32 s = 0.5f - fabsf((f32)(s16)channelAux.oscPhase / 32768.0f);
+            channelAux.oscPhase += pitch >> 1;
+            return s;
+        });
+        break;
+    }
+    case OscType::EVOLVING_HARMONIC: {
+        std::generate(buf.begin(), buf.end(), [&] {
+            f32 s = gEvolvingHarmonic[channelAux.oscPhase >> 10] / 32768.0f;
+            channelAux.oscPhase += pitch >> 1;
+            return s;
+        });
+        break;
+    }
+    default:
+        DuskLog.error("RenderOscChannel: unimplemented oscillator type {}", channel.mBytesPerBlock);
+        break;
+    }
+
+    auto samples = std::span(buf).subspan(0, DSP_SUBFRAME_SIZE);
+    RenderOutputChannel(channel, channelAux, OutputChannel::LEFT,  samples, subframe);
+    RenderOutputChannel(channel, channelAux, OutputChannel::RIGHT, samples, subframe);
+}
+
+
 void dusk::audio::DspRender(OutputSubframe& subframe) {
     ZoneScoped;
     if (DumpAudio != sDumpWasActive) {
@@ -152,6 +275,8 @@ void dusk::audio::DspRender(OutputSubframe& subframe) {
         }
     }
 
+    GenerateEvolvingHarmonic();
+
     std::span channels(JASDsp::CH_BUF, DSP_CHANNELS);
 
     DspSubframe reverbInputL = {};
@@ -174,17 +299,14 @@ void dusk::audio::DspRender(OutputSubframe& subframe) {
             channel.mIsFinished = true;
             continue;
         }
-        else if (channel.mWaveAramAddress == 0) {
-            // I think these are oscillator channels? Not backed by audio.
-            // No idea how to implement these yet, so skip them.
-            channel.mIsFinished = true;
-            continue;
-        }
-
-        ValidateChannel(channel);
 
         OutputSubframe channelSubframe = {};
-        RenderChannel(channel, channelAux, channelSubframe);
+        if (channel.mWaveAramAddress == 0) {
+            RenderOscChannel(channel, channelAux, channelSubframe);
+        } else {
+            ValidateChannel(channel);
+            RenderChannel(channel, channelAux, channelSubframe);
+        }
 
         if (EnableReverb) {
             // scale the input to the reverb rather than using wet/dry on the output.

src/dusk/audio/DuskDsp.hpp

@@ -53,6 +53,9 @@ namespace dusk::audio {
         // last consumed sample from decodeBuf
         s16 resamplePrev;
 
+        // phase of oscillator channels
+        u16 oscPhase;
+
         // low pass previous state
         f32 prev_lp_out;  // out[n-1]
         f32 prev_lp_in;   // in[n-1]

src/dusk/frame_interpolation.cpp

@@ -127,14 +127,20 @@ void ensure_initialized() {
     s_initialized = true;
 }
 
+void begin_sim_tick() {
+    ensure_initialized();
+    if (!g_enabled) {
+        return;
+    }
+
+    s_interpolationCallBackWork.clear();
+    s_cam_prev = std::move(s_cam_curr);
+}
+
 void begin_frame(bool enabled, bool is_sim_frame, float step) {
     g_enabled = enabled;
     g_is_sim_frame = is_sim_frame;
     g_step = std::clamp(step, 0.0f, 1.0f);
-    if (is_sim_frame) {
-        s_interpolationCallBackWork.clear();
-        s_cam_prev = std::move(s_cam_curr);
-    }
 }
 
 bool is_enabled() {

src/dusk/game_clock.cpp

@@ -5,62 +5,84 @@
 #include <cmath>
 #include <unordered_map>
 
-namespace dusk {
-namespace game_clock {
+namespace dusk::game_clock {
 
 using clock = std::chrono::steady_clock;
 
 bool s_initialized = false;
 clock::time_point s_previous_sample{};
-float s_sim_accumulator = 0.0f;
+clock::time_point s_current_snapshot_time{};
 
 std::unordered_map<uintptr_t, clock::time_point> s_interval_last_sample;
 
+constexpr clock::duration kSimPeriodDuration =
+    std::chrono::duration_cast<clock::duration>(std::chrono::duration<float>(sim_pace()));
+constexpr clock::duration kAbnormalGapResetThreshold = std::chrono::milliseconds(250);
+constexpr int kMaxSimTicksPerFrame = 2;
+
 void ensure_initialized() {
     if (s_initialized) {
         return;
     }
     s_previous_sample = clock::now();
-    s_sim_accumulator = sim_pace();
+    s_current_snapshot_time = s_previous_sample;
     s_initialized = true;
 }
 
-void reset_accumulator() {
-    ensure_initialized();
-    s_sim_accumulator = fmodf(s_sim_accumulator, sim_pace());
-}
-
 void reset_frame_timer() {
     s_previous_sample = clock::now();
-    s_sim_accumulator = 0.0f;
+    s_current_snapshot_time = s_previous_sample - kSimPeriodDuration;
 }
 
 MainLoopPacer advance_main_loop() {
     ensure_initialized();
 
     const clock::time_point now = clock::now();
-    const float presentation_dt = std::chrono::duration<float>(now - s_previous_sample).count();
+    const clock::duration frame_gap = now - s_previous_sample;
+    const float presentation_dt = std::chrono::duration<float>(frame_gap).count();
     s_previous_sample = now;
 
-    s_sim_accumulator += presentation_dt;
-
     MainLoopPacer out{};
     out.presentation_dt_seconds = presentation_dt;
 
-    const bool should_interpolate = dusk::getSettings().game.enableFrameInterpolation && !dusk::getTransientSettings().skipFrameRateLimit;
+    const bool should_interpolate = dusk::getSettings().game.enableFrameInterpolation &&
+                                    !dusk::getTransientSettings().skipFrameRateLimit;
     out.is_interpolating = should_interpolate;
     out.sim_pace = sim_pace();
 
     if (!should_interpolate) {
-        s_sim_accumulator = 0.0f;
-        out.do_sim_tick = true;
-        out.interpolation_step = 0.0f;
-        return out;
-    } else {
-        out.do_sim_tick = s_sim_accumulator >= sim_pace();
-        out.interpolation_step = out.do_sim_tick ? 0.0f : s_sim_accumulator / sim_pace();
+        s_current_snapshot_time = now;
+        out.sim_ticks_to_run = 1;
         return out;
     }
+
+    if (frame_gap > kAbnormalGapResetThreshold) {
+        s_current_snapshot_time = now - kSimPeriodDuration;
+        out.sim_ticks_to_run = 0;
+        return out;
+    }
+
+    int sim_ticks_to_run = 0;
+    clock::time_point projected_snapshot_time = s_current_snapshot_time;
+    const clock::time_point render_time = now - kSimPeriodDuration;
+    while (sim_ticks_to_run < kMaxSimTicksPerFrame && projected_snapshot_time < render_time) {
+        projected_snapshot_time += kSimPeriodDuration;
+        sim_ticks_to_run++;
+    }
+    out.sim_ticks_to_run = sim_ticks_to_run;
+    return out;
+}
+
+void commit_sim_tick() {
+    ensure_initialized();
+    s_current_snapshot_time += kSimPeriodDuration;
+}
+
+float sample_interpolation_step() {
+    ensure_initialized();
+    const float step =
+        std::chrono::duration<float>(clock::now() - s_current_snapshot_time).count() / sim_pace();
+    return std::clamp(step, 0.0f, 1.0f);
 }
 
 float consume_interval(const void* consumer) {
@@ -78,5 +100,4 @@ float consume_interval(const void* consumer) {
     return dt;
 }
 
-}  // namespace game_clock
-}  // namespace dusk
+}  // namespace dusk::game_clock

src/dusk/gyro.cpp

@@ -1,16 +1,29 @@
 #include "dusk/gyro.h"
 #include "d/actor/d_a_alink.h"
+#include <cmath>
 
 namespace dusk::gyro {
 namespace {
-constexpr s32   kRollgoalTableMaxOffset = 12000;
+constexpr s32   kRollgoalTableMaxOffset = 6500;
 constexpr float kGyroEmaAlphaMin = 0.05f;
 constexpr float kGyroEmaAlphaMax = 1.0f;
+// Smooth gravity separately so the yaw/roll blend doesn't twitch with raw accel noise.
+constexpr float kGravityEmaAlpha = 0.1f;
+constexpr float kMinGravityProjection = 0.2f;
+// Let roll contribute more strongly as the pad approaches an upright posture.
+constexpr float kRollAimBoostMax = 2.0f;
 
 bool  s_sensor_enabled        = false;
+bool  s_accel_enabled         = false;
+bool  s_was_aiming            = false;
+bool  s_have_gravity_baseline = false;
 float s_smooth_gx             = 0.0f;
 float s_smooth_gy             = 0.0f;
 float s_smooth_gz             = 0.0f;
+float s_gravity_y             = 0.0f;
+float s_gravity_z             = 0.0f;
+float s_baseline_gravity_y    = 0.0f;
+float s_baseline_gravity_z    = 0.0f;
 float s_yaw_rad               = 0.0f;
 float s_pitch_rad             = 0.0f;
 float s_roll_rad              = 0.0f;
@@ -19,6 +32,10 @@ s32   s_rollgoal_az           = 0;
 
 void reset_filter_state() {
     s_smooth_gx = s_smooth_gy = s_smooth_gz = 0.0f;
+    s_gravity_y = s_gravity_z = 0.0f;
+    s_baseline_gravity_y = s_baseline_gravity_z = 0.0f;
+    s_was_aiming = false;
+    s_have_gravity_baseline = false;
     s_yaw_rad = s_pitch_rad = s_roll_rad = 0.0f;
     s_rollgoal_ax = s_rollgoal_az = 0;
 }
@@ -49,15 +66,30 @@ bool queryGyroAimContext() {
 }
 
 void read(float dt) {
-    if (!s_sensor_keep_alive && !queryGyroAimContext()) {
+    const bool aim_active = queryGyroAimContext();
+    const bool aim_just_started = aim_active && !s_was_aiming;
+    const bool aim_just_ended = !aim_active && s_was_aiming;
+    s_was_aiming = aim_active;
+
+    if (!s_sensor_keep_alive && !aim_active) {
         if (s_sensor_enabled) {
             PADSetSensorEnabled(PAD_CHAN0, PAD_SENSOR_GYRO, FALSE);
             s_sensor_enabled = false;
         }
+        if (s_accel_enabled) {
+            PADSetSensorEnabled(PAD_CHAN0, PAD_SENSOR_ACCEL, FALSE);
+            s_accel_enabled = false;
+        }
         reset_filter_state();
         return;
     }
 
+    if (aim_just_started || aim_just_ended) {
+        s_gravity_y = s_gravity_z = 0.0f;
+        s_baseline_gravity_y = s_baseline_gravity_z = 0.0f;
+        s_have_gravity_baseline = false;
+    }
+
     if (!s_sensor_enabled) {
         if (!PADHasSensor(PAD_CHAN0, PAD_SENSOR_GYRO)) {
             return;
@@ -68,6 +100,13 @@ void read(float dt) {
         s_sensor_enabled = true;
     }
 
+    if (!s_accel_enabled && PADHasSensor(PAD_CHAN0, PAD_SENSOR_ACCEL) &&
+        PADSetSensorEnabled(PAD_CHAN0, PAD_SENSOR_ACCEL, TRUE))
+    {
+        // We only need accel for the gravity-aware yaw/roll mix.
+        s_accel_enabled = true;
+    }
+
     f32 gyro[3];
     if (!PADGetSensorData(PAD_CHAN0, PAD_SENSOR_GYRO, gyro, 3)) {
         return;
@@ -80,9 +119,50 @@ void read(float dt) {
     s_smooth_gy += smooth_alpha * (gyro[1] - s_smooth_gy);
     s_smooth_gz += smooth_alpha * (gyro[2] - s_smooth_gz);
 
-    s_pitch_rad = -apply_deadband(s_smooth_gx, deadband) * dt * dusk::getSettings().game.gyroSensitivityX;
-    s_yaw_rad   = apply_deadband(s_smooth_gy, deadband) * dt * dusk::getSettings().game.gyroSensitivityY;
-    s_roll_rad  = apply_deadband(s_smooth_gz, deadband) * dt * dusk::getSettings().game.gyroSensitivityX; // GYRO NOTE: Exposing Z sensitivity seems unusual, so I'm just using X
+    const float pitch_rate = apply_deadband(s_smooth_gx, deadband);
+    const float yaw_rate = apply_deadband(s_smooth_gy, deadband);
+    const float roll_rate = apply_deadband(s_smooth_gz, deadband);
+
+    s_pitch_rad = -pitch_rate * dt * dusk::getSettings().game.gyroSensitivityX;
+    s_roll_rad  = roll_rate * dt * dusk::getSettings().game.gyroSensitivityX; // GYRO NOTE: Exposing Z sensitivity seems unusual, so I'm just using X
+
+    float horizontal_rate = yaw_rate;
+    if (aim_active && s_accel_enabled) {
+        f32 accel[3];
+        if (PADGetSensorData(PAD_CHAN0, PAD_SENSOR_ACCEL, accel, 3)) {
+            if (!s_have_gravity_baseline) {
+                s_gravity_y = accel[1];
+                s_gravity_z = accel[2];
+            } else {
+                s_gravity_y += kGravityEmaAlpha * (accel[1] - s_gravity_y);
+                s_gravity_z += kGravityEmaAlpha * (accel[2] - s_gravity_z);
+            }
+
+            // Compare the current gravity projection against the gravity vector from
+            // aim start so the user's resting hold angle becomes the neutral baseline.
+            const float gravity_yz_len = std::sqrt((s_gravity_y * s_gravity_y) + (s_gravity_z * s_gravity_z));
+            if (gravity_yz_len >= kMinGravityProjection) {
+                const float current_gravity_y = s_gravity_y / gravity_yz_len;
+                const float current_gravity_z = s_gravity_z / gravity_yz_len;
+
+                if (!s_have_gravity_baseline) {
+                    s_baseline_gravity_y = current_gravity_y;
+                    s_baseline_gravity_z = current_gravity_z;
+                    s_have_gravity_baseline = true;
+                }
+
+                const float yaw_weight =
+                    (s_baseline_gravity_y * current_gravity_y) + (s_baseline_gravity_z * current_gravity_z);
+                const float roll_weight =
+                    (s_baseline_gravity_y * current_gravity_z) - (s_baseline_gravity_z * current_gravity_y);
+                const float roll_mix = std::fabs(roll_weight);
+                const float roll_boost = 1.0f + (roll_mix * (kRollAimBoostMax - 1.0f));
+                horizontal_rate = (yaw_rate * yaw_weight) + (roll_rate * roll_weight * roll_boost);
+            }
+        }
+    }
+
+    s_yaw_rad = horizontal_rate * dt * dusk::getSettings().game.gyroSensitivityY;
 
     s_pitch_rad = dusk::getSettings().game.gyroInvertPitch ? -s_pitch_rad : s_pitch_rad;
     s_yaw_rad = dusk::getSettings().game.gyroInvertYaw ? -s_yaw_rad : s_yaw_rad;

src/dusk/imgui/ImGuiConsole.cpp

@@ -305,6 +305,10 @@ namespace dusk {
             ImGuiMenuGame::ToggleFullscreen();
         }
 
+        if (ImGui::IsKeyPressed(ImGuiKey_Escape) && getSettings().video.enableFullscreen) {
+            ImGuiMenuGame::ToggleFullscreen();
+        }
+
         if (!dusk::IsGameLaunched) {
             m_preLaunchWindow.draw();
         }

src/dusk/imgui/ImGuiMenuGame.cpp

@@ -288,6 +288,8 @@ namespace dusk {
             config::ImGuiCheckbox("Infinite Oil", getSettings().game.infiniteOil);
             config::ImGuiCheckbox("Infinite Oxygen", getSettings().game.infiniteOxygen);
             config::ImGuiCheckbox("Infinite Rupees", getSettings().game.infiniteRupees);
+            config::ImGuiCheckbox("Items Don't Despawn", getSettings().game.enableIndefiniteItemDrops);
+            ImGui::SetItemTooltip("Items Don't Despawn Unless You Load A Different Room In Which Case They Do But Even Under Some Circumstances They Don't, It Is Quite Rare Though");
 
             ImGui::SeparatorText("Abilities");
             config::ImGuiCheckbox("Moon Jump (R+A)", getSettings().game.moonJump);

src/dusk/imgui/ImGuiStateShare.cpp

@@ -5,14 +5,22 @@
 #include "imgui.h"
 #include "fmt/format.h"
 #include "absl/strings/escaping.h"
+#include "nlohmann/json.hpp"
 
 #include "d/d_com_inf_game.h"
 #include "dusk/main.h"
+#include "dusk/io.hpp"
+#include "dusk/logging.h"
+#include "../file_select.hpp"
+#include "aurora/lib/window.hpp"
 
+#include <unordered_set>
 #include <zstd.h>
 
 namespace dusk {
 
+using json = nlohmann::json;
+
 #pragma pack(push, 1)
 struct StateSharePacket {
     char    stageName[8];
@@ -23,9 +31,65 @@ struct StateSharePacket {
 };
 #pragma pack(pop)
 
-static constexpr size_t PACKET_TOTAL = sizeof(StateSharePacket) + sizeof(dSv_info_c);
+static constexpr size_t PACKET_TOTAL     = sizeof(StateSharePacket) + sizeof(dSv_info_c);
+static constexpr size_t PACKET_SAVE_ONLY = sizeof(StateSharePacket) + sizeof(dSv_save_c);
+static constexpr auto STATES_FILENAME = "states.json";
 
-void ImGuiStateShare::copyState() {
+static bool ValidateEncodedState(const std::string&);
+
+void ImGuiStateShare::onMergeFileSelected(void* userdata, const char* path, const char* /*error*/) {
+    auto* self = static_cast<ImGuiStateShare*>(userdata);
+    if (path != nullptr) {
+        self->m_pendingMergePath = path;
+    }
+}
+
+
+
+static std::string GetStatesFilePath() {
+    return (dusk::ConfigPath / STATES_FILENAME).string();
+}
+
+void ImGuiStateShare::loadStatesFile() {
+    m_loaded = true;
+    const std::filesystem::path filePath = dusk::ConfigPath / STATES_FILENAME;
+    if (!std::filesystem::exists(filePath)) {
+        return;
+    }
+    try {
+        const std::string pathStr = filePath.string();
+        auto data = io::FileStream::ReadAllBytes(pathStr.c_str());
+        auto j = json::parse(data);
+        if (!j.is_array()) {
+            return;
+        }
+        for (const auto& entry : j) {
+            if (!entry.contains("name") || !entry.contains("data")) {
+                continue;
+            }
+            SavedStateEntry s;
+            s.name    = entry["name"].get<std::string>();
+            s.encoded = entry["data"].get<std::string>();
+            m_states.push_back(std::move(s));
+        }
+    } catch (const std::exception& e) {
+        m_statusMsg = fmt::format("Failed to load states: {}", e.what());
+    }
+}
+
+void ImGuiStateShare::saveStatesFile() {
+    json j = json::array();
+    for (const auto& s : m_states) {
+        j.push_back(json{{"name", s.name}, {"data", s.encoded}});
+    }
+    try {
+        io::FileStream::WriteAllText(GetStatesFilePath().c_str(), j.dump(2));
+    } catch (const std::exception& e) {
+        m_statusMsg = fmt::format("Failed to save states: {}", e.what());
+    }
+}
+
+std::string ImGuiStateShare::encodeCurrentState() {
     StateSharePacket pkt = {};
     strncpy(pkt.stageName, dComIfGp_getStartStageName(), 7);
     pkt.roomNo     = dComIfGp_getStartStageRoomNo();
@@ -40,26 +104,25 @@ void ImGuiStateShare::copyState() {
     std::string compressed(bound, '\0');
     compressed.resize(ZSTD_compress(compressed.data(), bound, raw.data(), raw.size(), 1));
 
-    std::string encoded = absl::Base64Escape(compressed);
-    ImGui::SetClipboardText(encoded.c_str());
-    m_statusMsg = "Copied to clipboard.";
+    return absl::Base64Escape(compressed);
 }
 
-bool ImGuiStateShare::pasteState() {
-    const char* clip = ImGui::GetClipboardText();
-    if (!clip || clip[0] == '\0') {
-        m_statusMsg = "Clipboard is empty.";
-        return false;
-    }
-
+bool ImGuiStateShare::applyEncodedState(const std::string& encoded, const std::string& name) {
     std::string decoded;
-    if (!absl::Base64Unescape(clip, &decoded)) {
+    if (!absl::Base64Unescape(encoded, &decoded)) {
         m_statusMsg = "Invalid base64.";
         return false;
     }
 
     unsigned long long dSize = ZSTD_getFrameContentSize(decoded.data(), decoded.size());
-    if (dSize == ZSTD_CONTENTSIZE_ERROR || dSize == ZSTD_CONTENTSIZE_UNKNOWN || dSize < PACKET_TOTAL) {
+    if (dSize == ZSTD_CONTENTSIZE_ERROR || dSize == ZSTD_CONTENTSIZE_UNKNOWN) {
+        m_statusMsg = "Not a valid state string.";
+        return false;
+    }
+
+    const bool isFull    = (dSize == PACKET_TOTAL);
+    const bool isPartial = (dSize == PACKET_SAVE_ONLY);
+    if (!isFull && !isPartial) {
         m_statusMsg = "Not a valid state string.";
         return false;
     }
@@ -75,45 +138,261 @@ bool ImGuiStateShare::pasteState() {
     memcpy(&pkt, raw.data(), sizeof(pkt));
     pkt.stageName[7] = '\0';
 
-    memcpy(&g_dComIfG_gameInfo.info, raw.data() + sizeof(pkt), sizeof(dSv_info_c));
+    if (isFull) {
+        memcpy(&g_dComIfG_gameInfo.info, raw.data() + sizeof(pkt), sizeof(dSv_info_c));
+        m_pendingInfo = g_dComIfG_gameInfo.info;
+        m_pendingSavedata.reset();
+    } else {
+        memcpy(&g_dComIfG_gameInfo.info.mSavedata, raw.data() + sizeof(pkt), sizeof(dSv_save_c));
+        m_pendingSavedata = g_dComIfG_gameInfo.info.mSavedata;
+        m_pendingInfo.reset();
+    }
 
     s16 spawnPoint = pkt.startPoint == -4 ? -1 : pkt.startPoint;
-    
     if (spawnPoint == -1) {
         dComIfGs_setRestartRoomParam(pkt.roomNo & 0x3F);
     }
 
     dComIfGp_setNextStage(pkt.stageName, spawnPoint, pkt.roomNo, pkt.layer);
-    m_pendingInfo = g_dComIfG_gameInfo.info;
 
-    m_statusMsg = fmt::format("Warping to {} room {} layer {}.", pkt.stageName, (int)pkt.roomNo, (int)pkt.layer);
+    if (name.empty()) {
+        m_statusMsg = fmt::format("{} room {} layer {}.", pkt.stageName, (int)pkt.roomNo, (int)pkt.layer);
+    } else {
+        m_statusMsg = fmt::format("{}: {} room {} layer {}.", name, pkt.stageName, (int)pkt.roomNo, (int)pkt.layer);
+    }
     return true;
 }
 
 void ImGuiStateShare::tickPendingApply() {
-    if (!m_pendingInfo.has_value() || dComIfGp_isEnableNextStage())
+    if (!m_pendingInfo.has_value() && !m_pendingSavedata.has_value()) {
         return;
-    g_dComIfG_gameInfo.info = *m_pendingInfo;
-    m_pendingInfo.reset();
+    }
+    if (dComIfGp_isEnableNextStage()) {
+        return;
+    }
+    if (m_pendingInfo.has_value()) {
+        g_dComIfG_gameInfo.info = *m_pendingInfo;
+        m_pendingInfo.reset();
+    } else {
+        g_dComIfG_gameInfo.info.mSavedata = *m_pendingSavedata;
+        m_pendingSavedata.reset();
+    }
+    dComIfGp_offOxygenShowFlag();
+    dComIfGp_setMaxOxygen(600);
+    dComIfGp_setOxygen(600);
+}
+
+static bool ValidateEncodedState(const std::string& encoded) {
+    std::string decoded;
+    if (!absl::Base64Unescape(encoded, &decoded)) {
+        return false;
+    }
+    unsigned long long dSize = ZSTD_getFrameContentSize(decoded.data(), decoded.size());
+    return dSize == PACKET_TOTAL || dSize == PACKET_SAVE_ONLY;
+}
+
+void ImGuiStateShare::mergeFromFile(const std::string& path) {
+    try {
+        auto data = io::FileStream::ReadAllBytes(path.c_str());
+        auto j = json::parse(data);
+        if (!j.is_array()) {
+            m_statusMsg = "File does not contain a JSON array.";
+            return;
+        }
+
+        std::unordered_set<std::string> existingNames;
+        for (const auto& s : m_states) {
+            existingNames.insert(s.name);
+        }
+
+        int added   = 0;
+        int skipped = 0;
+        for (const auto& entry : j) {
+            if (!entry.contains("name") || !entry.contains("data")) {
+                ++skipped;
+                continue;
+            }
+            const std::string name    = entry["name"].get<std::string>();
+            const std::string encoded = entry["data"].get<std::string>();
+            if (!ValidateEncodedState(encoded)) {
+                ++skipped;
+                continue;
+            }
+            if (existingNames.count(name)) {
+                ++skipped;
+                continue;
+            }
+            SavedStateEntry s;
+            s.name    = name;
+            s.encoded = encoded;
+            existingNames.insert(s.name);
+            m_states.push_back(std::move(s));
+            ++added;
+        }
+
+        if (added > 0) {
+            saveStatesFile();
+        }
+        m_statusMsg = fmt::format("Merged: {} added, {} skipped.", added, skipped);
+    } catch (const std::exception& e) {
+        m_statusMsg = fmt::format("Failed to load file: {}", e.what());
+    }
 }
 
 void ImGuiStateShare::draw(bool& open) {
-    if (dusk::IsGameLaunched)
+    if (dusk::IsGameLaunched) {
         tickPendingApply();
+    }
 
-    if (!open)
+    if (!m_loaded) {
+        loadStatesFile();
+    }
+
+    if (!m_pendingMergePath.empty()) {
+        mergeFromFile(m_pendingMergePath);
+        m_pendingMergePath.clear();
+    }
+
+    if (!open) {
         return;
+    }
 
+    ImGui::SetNextWindowSizeConstraints(ImVec2(400, 0), ImVec2(FLT_MAX, FLT_MAX));
     if (!ImGui::Begin("State Share", &open, ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoFocusOnAppearing | ImGuiWindowFlags_NoNav)) {
         ImGui::End();
         return;
     }
 
-    if (!dusk::IsGameLaunched) ImGui::BeginDisabled();
-    if (ImGui::Button("Copy State"))    copyState();
+    const bool gameRunning = dusk::IsGameLaunched;
+
+    const float rowH  = ImGui::GetTextLineHeightWithSpacing();
+    const float listH = rowH * 8 + ImGui::GetStyle().FramePadding.y * 2;
+    ImGui::BeginChild("##states", ImVec2(0, listH), true);
+
+    if (m_states.empty()) {
+        ImGui::TextDisabled("No saved states. Save or import one below.");
+    }
+
+    int toDelete = -1;
+    for (int i = 0; i < (int)m_states.size(); ++i) {
+        ImGui::PushID(i);
+
+        if (m_renamingIndex == i) {
+            ImGui::SetNextItemWidth(150);
+            bool done = ImGui::InputText("##rename", m_renameBuffer, sizeof(m_renameBuffer),
+                                         ImGuiInputTextFlags_EnterReturnsTrue | ImGuiInputTextFlags_AutoSelectAll);
+            if (done) {
+                if (m_renameBuffer[0] != '\0') {
+                    m_states[i].name = m_renameBuffer;
+                }
+                m_renamingIndex = -1;
+                saveStatesFile();
+            } else if (ImGui::IsItemDeactivated()) {
+                m_renamingIndex = -1;
+            }
+        } else {
+            ImGui::Selectable(m_states[i].name.c_str(), false, ImGuiSelectableFlags_None, ImVec2(150, 0));
+            if (ImGui::IsItemHovered()) {
+                ImGui::SetTooltip("Double-click to rename");
+                if (ImGui::IsMouseDoubleClicked(0)) {
+                    m_renamingIndex = i;
+                    strncpy(m_renameBuffer, m_states[i].name.c_str(), sizeof(m_renameBuffer) - 1);
+                    m_renameBuffer[sizeof(m_renameBuffer) - 1] = '\0';
+                    ImGui::SetKeyboardFocusHere(-1);
+                }
+            }
+        }
+
+        ImGui::SameLine();
+        if (!gameRunning) { ImGui::BeginDisabled(); }
+        if (ImGui::Button("Load")) {
+            applyEncodedState(m_states[i].encoded, m_states[i].name);
+        }
+        if (!gameRunning) { ImGui::EndDisabled(); }
+
+        ImGui::SameLine();
+        if (ImGui::Button("Copy")) {
+            ImGui::SetClipboardText(m_states[i].encoded.c_str());
+            m_statusMsg = fmt::format("'{}' copied to clipboard.", m_states[i].name);
+        }
+
+        ImGui::SameLine();
+        if (ImGui::Button("Del")) {
+            toDelete = i;
+        }
+
+        ImGui::PopID();
+    }
+
+    if (toDelete >= 0) {
+        if (m_renamingIndex == toDelete) { m_renamingIndex = -1; }
+        m_states.erase(m_states.begin() + toDelete);
+        saveStatesFile();
+    }
+
+    ImGui::EndChild();
+
+    // Toolbar
+    if (!gameRunning) { ImGui::BeginDisabled(); }
+    if (ImGui::Button("Save")) {
+        SavedStateEntry entry;
+        entry.name    = fmt::format("State {}", m_states.size() + 1);
+        entry.encoded = encodeCurrentState();
+        m_states.push_back(std::move(entry));
+        saveStatesFile();
+        m_statusMsg = fmt::format("Saved as '{}'.", m_states.back().name);
+    }
+    if (!gameRunning) { ImGui::EndDisabled(); }
+
     ImGui::SameLine();
-    if (ImGui::Button("Import State"))  pasteState();
-    if (!dusk::IsGameLaunched) ImGui::EndDisabled();
+    if (ImGui::Button("Import Clipboard")) {
+        const char* clip = ImGui::GetClipboardText();
+        if (!clip || clip[0] == '\0') {
+            m_statusMsg = "Clipboard is empty.";
+        } else {
+            std::string clipStr = clip;
+            if (!ValidateEncodedState(clipStr)) {
+                m_statusMsg = "Clipboard does not contain a valid state.";
+            } else {
+                SavedStateEntry entry;
+                entry.name    = fmt::format("Imported {}", m_states.size() + 1);
+                entry.encoded = std::move(clipStr);
+                m_states.push_back(std::move(entry));
+                saveStatesFile();
+                m_statusMsg = fmt::format("Imported as '{}'.", m_states.back().name);
+            }
+        }
+    }
+
+    ImGui::SameLine();
+    if (ImGui::Button("Load Pack")) {
+        static constexpr SDL_DialogFileFilter filter = {"State pack", "json"};
+        ShowFileSelect(&onMergeFileSelected, this, aurora::window::get_sdl_window(), &filter, 1, nullptr, false);
+    }
+
+    if (!m_states.empty()) {
+        ImGui::SameLine();
+        if (ImGui::Button("Clear All")) {
+            ImGui::OpenPopup("##clearall");
+        }
+
+        if (ImGui::BeginPopup("##clearall")) {
+            ImGui::Text("Delete all saved states?");
+            ImGui::Spacing();
+            if (ImGui::Button("Yes, clear all")) {
+                m_states.clear();
+                m_renamingIndex = -1;
+                saveStatesFile();
+                m_statusMsg = "All states cleared.";
+                ImGui::CloseCurrentPopup();
+            }
+            ImGui::SameLine();
+            if (ImGui::Button("Cancel")) {
+                ImGui::CloseCurrentPopup();
+            }
+            ImGui::EndPopup();
+        }
+    }
 
     if (!m_statusMsg.empty()) {
         ImGui::Spacing();
@@ -125,8 +404,9 @@ void ImGuiStateShare::draw(bool& open) {
 }
 
 void ImGuiMenuTools::ShowStateShare() {
-    if (!ImGuiConsole::CheckMenuViewToggle(ImGuiKey_F8, m_showStateShare))
+    if (!ImGuiConsole::CheckMenuViewToggle(ImGuiKey_F8, m_showStateShare)) {
         return;
+    }
     m_stateShare.draw(m_showStateShare);
 }
 

src/dusk/imgui/ImGuiStateShare.hpp

@@ -4,21 +4,38 @@
 #include "d/d_save.h"
 #include <optional>
 #include <string>
+#include <vector>
 
 namespace dusk {
-    class ImGuiStateShare {
-    public:
-        void draw(bool& open);
 
-    private:
-        void copyState();
-        bool pasteState();
-        void tickPendingApply();
+struct SavedStateEntry {
+    std::string name;
+    std::string encoded;
+};
+
+class ImGuiStateShare {
+public:
+    void draw(bool& open);
+
+private:
+    std::string encodeCurrentState();
+    bool applyEncodedState(const std::string& encoded, const std::string& name = {});
+    void tickPendingApply();
+    void loadStatesFile();
+    void saveStatesFile();
+    void mergeFromFile(const std::string& path);
+    static void onMergeFileSelected(void* userdata, const char* path, const char* error);
+
+    std::vector<SavedStateEntry> m_states;
+    std::string m_statusMsg;
+    std::optional<dSv_info_c>  m_pendingInfo;
+    std::optional<dSv_save_c>  m_pendingSavedata;
+    int m_renamingIndex = -1;
+    char m_renameBuffer[128] = {};
+    bool m_loaded = false;
+    std::string m_pendingMergePath;
+};
 
-        std::string m_statusMsg;
-        std::optional<dSv_info_c> m_pendingInfo;
-    };
 }
 
 #endif
-                                                        

src/dusk/settings.cpp

@@ -75,6 +75,7 @@ UserSettings g_userSettings = {
         .infiniteOil{"game.infiniteOil", false},
         .infiniteOxygen{"game.infiniteOxygen", false},
         .infiniteRupees{"game.infiniteRupees", false},
+        .enableIndefiniteItemDrops {"game.enableIndefiniteItemDrops", false},
         .moonJump{"game.moonJump", false},
         .superClawshot{"game.superClawshot", false},
         .alwaysGreatspin{"game.alwaysGreatspin", false},
@@ -160,6 +161,7 @@ void registerSettings() {
     Register(g_userSettings.game.infiniteOil);
     Register(g_userSettings.game.infiniteOxygen);
     Register(g_userSettings.game.infiniteRupees);
+    Register(g_userSettings.game.enableIndefiniteItemDrops);
     Register(g_userSettings.game.moonJump);
     Register(g_userSettings.game.superClawshot);
     Register(g_userSettings.game.alwaysGreatspin);

src/m_Do/m_Do_ext.cpp

@@ -351,8 +351,13 @@ void mDoExt_modelUpdateDL(J3DModel* i_model) {
 
 void mDoExt_modelEntryDL(J3DModel* i_model) {
 #if TARGET_PC
-    if (!dusk::frame_interp::is_sim_frame())
+    if (!dusk::frame_interp::is_sim_frame()) {
+        // FRAME INTERP NOTE: This fixes issue #355 where some lights would flicker.
+        // This is likely better solved by updating J3DMaterial::needsInterpCallBack,
+        // but it's unclear what exactly needs to be added.
+        i_model->diff();
         return;
+    }
 #endif
 
     modelMtxErrorCheck(i_model);

src/m_Do/m_Do_main.cpp

@@ -242,8 +242,6 @@ void main01(void) {
             continue;
         }
 
-        const dusk::game_clock::MainLoopPacer pacing = dusk::game_clock::advance_main_loop();
-
         VIWaitForRetrace();
 
         dusk::lastFrameAuroraStats = *aurora_get_stats();
@@ -254,28 +252,33 @@ void main01(void) {
 
         mDoGph_gInf_c::updateRenderSize();
 
-        dusk::frame_interp::begin_frame(pacing.is_interpolating, pacing.do_sim_tick, pacing.interpolation_step);
+        const auto pacing = dusk::game_clock::advance_main_loop();
         if (pacing.is_interpolating) {
-            if (pacing.do_sim_tick) {
+            if (pacing.sim_ticks_to_run > 0) {
+                dusk::frame_interp::begin_frame(true, true, 0.0f);
                 dusk::frame_interp::set_ui_tick_pending(true);
-                mDoCPd_c::read();
-                DuskDebugPad();
-                dusk::gyro::read(pacing.sim_pace);
-                fapGm_Execute();
-                mDoAud_Execute();
-                dusk::game_clock::reset_accumulator();
+                for (int sim_tick = 0; sim_tick < pacing.sim_ticks_to_run; ++sim_tick) {
+                    dusk::frame_interp::begin_sim_tick();
+                    mDoCPd_c::read();
+                    DuskDebugPad();
+                    dusk::gyro::read(pacing.sim_pace);
+                    fapGm_Execute();
+                    mDoAud_Execute();
+                    dusk::game_clock::commit_sim_tick();
+                }
             }
+
+            dusk::frame_interp::begin_frame(true, false,
+                                            dusk::game_clock::sample_interpolation_step());
             dusk::frame_interp::interpolate();
             dusk::frame_interp::begin_presentation_camera();
-            if (!pacing.do_sim_tick) {
-                // run draw functions for anything specially marked to handle interp on non-sim
-                // ticks
-                fpcM_DrawIterater((fpcM_DrawIteraterFunc)fpcM_Draw);
-            }
+            // run draw functions for anything specially marked to handle interp
+            fpcM_DrawIterater((fpcM_DrawIteraterFunc)fpcM_Draw);
             cAPIGph_Painter();
             dusk::frame_interp::end_presentation_camera();
             dusk::frame_interp::set_ui_tick_pending(false);
         } else {
+            dusk::frame_interp::begin_frame(false, true, 0.0f);
             dusk::frame_interp::set_ui_tick_pending(true);
 
             // Game Inputs

tools/saves_to_states_json.py

@@ -0,0 +1,58 @@
+"""
+Convert a folder of TPGZ saves to a states.json
+
+Usage:
+    python saves_to_states_json.py path/to/saves [prefix]
+
+Requirements:
+    pip install zstandard
+"""
+
+import base64
+import json
+import struct
+import sys
+import zstandard
+from pathlib import Path
+
+SAVE_C_SIZE   = 0x958
+
+PACKET_FORMAT = "<8sbbh"
+
+RETURN_PLACE_OFF  = 0x058
+NAME_OFF          = RETURN_PLACE_OFF + 0x00
+ROOM_OFF          = RETURN_PLACE_OFF + 0x09
+SPAWN_POINT_OFF   = RETURN_PLACE_OFF + 0x08
+
+folder = Path(sys.argv[1]) if len(sys.argv) > 1 else Path(__file__).parent
+out_path = folder / "states.json"
+
+if len(sys.argv) > 2:
+    prefix = sys.argv[2]
+else:
+    prefix = None
+
+cctx = zstandard.ZstdCompressor(level=1)
+states = []
+
+for bin_path in sorted(folder.glob("*.bin")):
+    raw = bin_path.read_bytes()
+    save_c = raw[:SAVE_C_SIZE]
+    if len(save_c) < SAVE_C_SIZE:
+        print(f"  skip {bin_path.name}: too small ({len(save_c)} bytes)")
+        continue
+
+    stage_name  = save_c[NAME_OFF:NAME_OFF + 8]
+    room_no     = struct.unpack_from("b", save_c, ROOM_OFF)[0]
+    spawn_point = struct.unpack_from("B", save_c, SPAWN_POINT_OFF)[0]
+
+    pkt     = struct.pack(PACKET_FORMAT, stage_name, room_no, -1, spawn_point)
+    payload = pkt + save_c
+    encoded = base64.b64encode(cctx.compress(payload)).decode("ascii")
+
+    stage_str = stage_name.rstrip(b"\x00").decode("ascii", errors="replace")
+    print(f"  {bin_path.stem:30s}  stage={stage_str!r}  room={room_no}  point={spawn_point}")
+    states.append({"name": f"({prefix}) {bin_path.stem}" if prefix else bin_path.stem, "data": encoded})
+
+out_path.write_text(json.dumps(states, indent=2))
+print(f"\nWrote {len(states)} states to {out_path}")