WIP autosave functionality

2024-05-01 04:06:53 -04:00 · 2024-05-01 04:06:53 -04:00 · 11012cdfc6
parent 1ef8656a93
commit 11012cdfc6
10 changed files with 400 additions and 4 deletions
--- a/patches/autosave.rgba32.bin
+++ b/patches/autosave.rgba32.bin
--- a/patches/autosave.rgba32.png
+++ b/patches/autosave.rgba32.png
--- a/patches/autosaving.c
+++ b/patches/autosaving.c
@ -0,0 +1,392 @@
+#include "patches.h"
+#include "play_patches.h"
+#include "z64save.h"
+#include "overlays/gamestates/ovl_file_choose/z_file_select.h"
+#include "overlays/kaleido_scope/ovl_kaleido_scope/z_kaleido_scope.h"
+
+#define SAVE_TYPE_AUTOSAVE 2 
+
+void Sram_SyncWriteToFlash(SramContext* sramCtx, s32 curPage, s32 numPages);
+
+void do_autosave(SramContext* sramCtx) {
+    s32 fileNum = gSaveContext.fileNum;
+
+    gSaveContext.save.isOwlSave = SAVE_TYPE_AUTOSAVE;
+
+    gSaveContext.save.saveInfo.checksum = 0;
+    gSaveContext.save.saveInfo.checksum = Sram_CalcChecksum(&gSaveContext, offsetof(SaveContext, fileNum));
+
+    // Copy the saved parts of the global save context into the sram saving buffer.
+    Lib_MemCpy(sramCtx->saveBuf, &gSaveContext, offsetof(SaveContext, fileNum));
+    // Synchronously save into the owl save slot and the backup owl save slot. 
+    Sram_SyncWriteToFlash(sramCtx, gFlashOwlSaveStartPages[fileNum * 2], gFlashOwlSaveNumPages[fileNum * 2]);
+    Sram_SyncWriteToFlash(sramCtx, gFlashOwlSaveStartPages[fileNum * 2 + 1], gFlashOwlSaveNumPages[fileNum * 2 + 1]);
+}
+
+// @recomp Do not clear the save if the save was an autosave.
+void func_80147314(SramContext* sramCtx, s32 fileNum) {
+    s32 save_type = gSaveContext.save.isOwlSave;
+    gSaveContext.save.isOwlSave = false;
+
+    // @recomp Check if this owl save was actually an autosave and don't clear it if so.
+    if (save_type != SAVE_TYPE_AUTOSAVE) {
+        gSaveContext.save.saveInfo.playerData.newf[0] = '\0';
+        gSaveContext.save.saveInfo.playerData.newf[1] = '\0';
+        gSaveContext.save.saveInfo.playerData.newf[2] = '\0';
+        gSaveContext.save.saveInfo.playerData.newf[3] = '\0';
+        gSaveContext.save.saveInfo.playerData.newf[4] = '\0';
+        gSaveContext.save.saveInfo.playerData.newf[5] = '\0';
+
+        gSaveContext.save.saveInfo.checksum = 0;
+        gSaveContext.save.saveInfo.checksum = Sram_CalcChecksum(&gSaveContext, offsetof(SaveContext, fileNum));
+
+        Lib_MemCpy(sramCtx->saveBuf, &gSaveContext, offsetof(SaveContext, fileNum));
+        Sram_SyncWriteToFlash(sramCtx, gFlashOwlSaveStartPages[fileNum * 2], gFlashOwlSaveNumPages[fileNum * 2]);
+        //! Note: should be `gFlashOwlSaveNumPages[fileNum * 2 + 1]`?
+        Sram_SyncWriteToFlash(sramCtx, gFlashOwlSaveStartPages[fileNum * 2 + 1], gFlashOwlSaveNumPages[fileNum * 2]);
+
+        gSaveContext.save.isOwlSave = true;
+
+        gSaveContext.save.saveInfo.playerData.newf[0] = 'Z';
+        gSaveContext.save.saveInfo.playerData.newf[1] = 'E';
+        gSaveContext.save.saveInfo.playerData.newf[2] = 'L';
+        gSaveContext.save.saveInfo.playerData.newf[3] = 'D';
+        gSaveContext.save.saveInfo.playerData.newf[4] = 'A';
+        gSaveContext.save.saveInfo.playerData.newf[5] = '3';
+    }
+}
+
+extern u16 D_801F6AF0;
+extern u8 D_801F6AF2;
+
+// @recomp Patched to tag autosaves as owl saves so that the modified version of func_80147314 still clears them.
+void Sram_EraseSave(FileSelectState* fileSelect2, SramContext* sramCtx, s32 fileNum) {
+    FileSelectState* fileSelect = fileSelect2;
+    s32 pad;
+
+    if (gSaveContext.flashSaveAvailable) {
+        if (fileSelect->isOwlSave[fileNum + 2]) {
+            // @recomp Override the save type to a regular owl save.
+            fileSelect->isOwlSave[fileNum + 2] = true;
+            func_80147314(sramCtx, fileNum);
+            fileSelect->isOwlSave[fileNum + 2] = false;
+        }
+        bzero(sramCtx->saveBuf, SAVE_BUFFER_SIZE);
+        Lib_MemCpy(&gSaveContext, sramCtx->saveBuf, sizeof(Save));
+    }
+
+    gSaveContext.save.time = D_801F6AF0;
+    gSaveContext.flashSaveAvailable = D_801F6AF2;
+}
+
+SaveContext prev_save_ctx;
+int bcmp_recomp(void* __s1, void* __s2, int __n);
+
+#define SAVE_COMPARE_MEMBER(ctx1, ctx2, member) \
+    if ((ctx1)->member != ((ctx2)->member)) { \
+        return true; \
+    }
+
+#define SAVE_COMPARE_MEMBER_ARRAY(ctx1, ctx2, member) \
+    if (bcmp_recomp(&(ctx1)->member, &(ctx2)->member, sizeof((ctx1)->member))) { \
+        recomp_printf(#member " differed\n"); \
+        return true; \
+    }
+
+bool autosave_compare_saves(SaveContext* a, SaveContext* b) {
+    SAVE_COMPARE_MEMBER_ARRAY(a, b, save.saveInfo.playerData.healthCapacity);
+    SAVE_COMPARE_MEMBER_ARRAY(a, b, save.saveInfo.playerData.isMagicAcquired);
+    SAVE_COMPARE_MEMBER_ARRAY(a, b, save.saveInfo.playerData.isDoubleMagicAcquired);
+    SAVE_COMPARE_MEMBER_ARRAY(a, b, save.saveInfo.playerData.doubleDefense);
+    SAVE_COMPARE_MEMBER_ARRAY(a, b, save.saveInfo.playerData.owlActivationFlags);
+    SAVE_COMPARE_MEMBER_ARRAY(a, b, save.saveInfo.inventory.items);
+    SAVE_COMPARE_MEMBER_ARRAY(a, b, save.saveInfo.inventory.upgrades);
+    SAVE_COMPARE_MEMBER_ARRAY(a, b, save.saveInfo.inventory.questItems);
+    SAVE_COMPARE_MEMBER_ARRAY(a, b, save.saveInfo.inventory.dungeonItems);
+    SAVE_COMPARE_MEMBER_ARRAY(a, b, save.saveInfo.inventory.dungeonKeys);
+    SAVE_COMPARE_MEMBER_ARRAY(a, b, save.saveInfo.inventory.strayFairies);
+    SAVE_COMPARE_MEMBER_ARRAY(a, b, save.saveInfo.permanentSceneFlags);
+    SAVE_COMPARE_MEMBER_ARRAY(a, b, save.saveInfo.dekuPlaygroundHighScores);
+    SAVE_COMPARE_MEMBER_ARRAY(a, b, save.saveInfo.scenesVisible);
+    SAVE_COMPARE_MEMBER_ARRAY(a, b, save.saveInfo.stolenItems);
+    SAVE_COMPARE_MEMBER_ARRAY(a, b, save.saveInfo.highScores);
+    SAVE_COMPARE_MEMBER_ARRAY(a, b, save.saveInfo.weekEventReg);
+    SAVE_COMPARE_MEMBER_ARRAY(a, b, save.saveInfo.regionsVisited);
+    SAVE_COMPARE_MEMBER_ARRAY(a, b, save.saveInfo.worldMapCloudVisibility);
+    SAVE_COMPARE_MEMBER_ARRAY(a, b, save.saveInfo.scarecrowSpawnSongSet);
+    SAVE_COMPARE_MEMBER_ARRAY(a, b, save.saveInfo.scarecrowSpawnSong);
+    // SAVE_COMPARE_MEMBER_ARRAY(a, b, eventInf);
+
+    return false;
+}
+
+Gfx* Gfx_DrawRect_DropShadow(Gfx* gfx, s16 rectLeft, s16 rectTop, s16 rectWidth, s16 rectHeight, u16 dsdx, u16 dtdy,
+                             s16 r, s16 g, s16 b, s16 a);
+
+#define MIN_FRAMES_SINCE_CHANGED 10
+
+OSTime last_autosave_time = 0;
+int frames_since_save_changed = 0;
+int autosave_icon_counter = 0;
+
+#define AUTOSAVE_ICON_FADE_OUT_FRAMES 5
+#define AUTOSAVE_ICON_FADE_IN_FRAMES 5
+#define AUTOSAVE_ICON_SHOW_FRAMES 30
+#define AUTOSAVE_ICON_TOTAL_FRAMES (AUTOSAVE_ICON_FADE_IN_FRAMES + AUTOSAVE_ICON_SHOW_FRAMES + AUTOSAVE_ICON_FADE_OUT_FRAMES)
+
+#define AUTOSAVE_ICON_WIDTH 24
+#define AUTOSAVE_ICON_HEIGHT 16
+#define AUTOSAVE_ICON_DRAW_WIDTH (AUTOSAVE_ICON_WIDTH * 3 / 4)
+#define AUTOSAVE_ICON_DRAW_HEIGHT (AUTOSAVE_ICON_HEIGHT * 3 / 4)
+#define AUTOSAVE_ICON_X (SCREEN_WIDTH - AUTOSAVE_ICON_DRAW_WIDTH - 4)
+#define AUTOSAVE_ICON_Y (SCREEN_HEIGHT - AUTOSAVE_ICON_DRAW_HEIGHT - 4)
+
+INCBIN(autosave_icon, "autosave.rgba32.bin");
+
+Gfx* GfxEx_DrawRect_DropShadow(Gfx* gfx, s16 rectLeft, s16 rectTop, s16 rectWidth, s16 rectHeight, u16 dsdx, u16 dtdy,
+                             s16 r, s16 g, s16 b, s16 a, u16 origin) {
+    s16 dropShadowAlpha = a;
+
+    if (a > 100) {
+        dropShadowAlpha = 100;
+    }
+
+    gDPPipeSync(gfx++);
+    gDPSetPrimColor(gfx++, 0, 0, 0, 0, 0, dropShadowAlpha);
+    gEXTextureRectangle(gfx++, origin, origin, (rectLeft + 2) * 4, (rectTop + 2) * 4, (rectLeft + rectWidth + 2) * 4,
+                        (rectTop + rectHeight + 2) * 4, G_TX_RENDERTILE, 0, 0, dsdx, dtdy);
+
+    gDPPipeSync(gfx++);
+    gDPSetPrimColor(gfx++, 0, 0, r, g, b, a);
+
+    gEXTextureRectangle(gfx++, origin, origin,  rectLeft * 4, rectTop * 4, (rectLeft + rectWidth) * 4, (rectTop + rectHeight) * 4,
+                        G_TX_RENDERTILE, 0, 0, dsdx, dtdy);
+
+    return gfx;
+}
+
+void draw_autosave_icon(PlayState* play) {
+    s32 alpha = 0;
+    if (autosave_icon_counter > (AUTOSAVE_ICON_SHOW_FRAMES + AUTOSAVE_ICON_FADE_OUT_FRAMES)) {
+        alpha = (255 * (AUTOSAVE_ICON_FADE_IN_FRAMES - (autosave_icon_counter - AUTOSAVE_ICON_SHOW_FRAMES - AUTOSAVE_ICON_FADE_OUT_FRAMES))) / AUTOSAVE_ICON_FADE_IN_FRAMES;
+    }
+    else if (autosave_icon_counter > AUTOSAVE_ICON_FADE_OUT_FRAMES) {
+        alpha = 255;
+    }
+    else if (autosave_icon_counter > 0) {
+        alpha = (255 * autosave_icon_counter) / AUTOSAVE_ICON_FADE_OUT_FRAMES;
+    }
+
+    if (autosave_icon_counter > 0) {
+        autosave_icon_counter--;
+    }
+
+    if (alpha != 0) {
+        OPEN_DISPS(play->state.gfxCtx);
+
+        gEXForceUpscale2D(OVERLAY_DISP++, 1);
+        gDPLoadTextureBlock(OVERLAY_DISP++, autosave_icon, G_IM_FMT_RGBA, G_IM_SIZ_32b, AUTOSAVE_ICON_WIDTH, AUTOSAVE_ICON_HEIGHT, 0,
+            G_TX_NOMIRROR | G_TX_CLAMP, G_TX_NOMIRROR | G_TX_CLAMP, G_TX_NOMASK, G_TX_NOMASK, G_TX_NOLOD, G_TX_NOLOD);
+
+        gDPSetCombineMode(OVERLAY_DISP++, G_CC_MODULATEIA_PRIM, G_CC_MODULATEIA_PRIM);
+        OVERLAY_DISP = GfxEx_DrawRect_DropShadow(OVERLAY_DISP, AUTOSAVE_ICON_X - SCREEN_WIDTH, AUTOSAVE_ICON_Y, AUTOSAVE_ICON_DRAW_WIDTH, AUTOSAVE_ICON_DRAW_HEIGHT,
+            (s32)(1024.0f * AUTOSAVE_ICON_WIDTH / AUTOSAVE_ICON_DRAW_WIDTH), (s32)(1024.0f * AUTOSAVE_ICON_HEIGHT / AUTOSAVE_ICON_DRAW_HEIGHT),
+            255, 255, 255, alpha, G_EX_ORIGIN_RIGHT);
+        gEXForceUpscale2D(OVERLAY_DISP++, 0);
+
+        CLOSE_DISPS(play->state.gfxCtx);
+    }
+}
+
+void show_autosave_icon() {
+    autosave_icon_counter = AUTOSAVE_ICON_TOTAL_FRAMES;
+}
+
+s32 recomp_autosave_enabled() {
+    return 1;
+}
+
+u32 recomp_autosave_interval() {
+    return 2 * 60 * 1000;
+}
+
+void autosave_post_play_update(PlayState* play) {
+    if (recomp_autosave_enabled()) {
+        if (autosave_compare_saves(&gSaveContext, &prev_save_ctx)) {
+            frames_since_save_changed = 0;
+            Lib_MemCpy(&prev_save_ctx, &gSaveContext, offsetof(SaveContext, fileNum));
+        }
+        else {
+            frames_since_save_changed++;
+        }
+
+        OSTime time_now = osGetTime();
+
+        // Check if enough time has passed since the previous autosave to create a new one.
+        if (OS_CYCLES_TO_USEC(time_now - last_autosave_time) > (1000 * recomp_autosave_interval())) {
+            // Check the following conditions:
+            // * The UI is in a normal state.
+            // * Time is passing.
+            // * No message is on screen.
+            // * The game is not paused.
+            // * No cutscene is running.
+            // * The game is not in cutscene mode.
+            if (gSaveContext.hudVisibility == HUD_VISIBILITY_ALL &&
+                R_TIME_SPEED != 0 &&
+                !Environment_IsTimeStopped() && 
+                play->msgCtx.msgMode == MSGMODE_NONE &&
+                play->pauseCtx.state == PAUSE_STATE_OFF &&
+                gSaveContext.save.cutsceneIndex < 0xFFF0 &&
+                !Play_InCsMode(play)
+            ) {
+                last_autosave_time = time_now;
+                do_autosave(&play->sramCtx);
+                show_autosave_icon();
+            }
+        }
+    }
+    else {
+        // Update the last autosave time to the current time to prevent autosaving immediately if autosaves are turned back on. 
+        last_autosave_time = osGetTime();
+    }
+}
+
+void autosave_init() {
+    last_autosave_time = osGetTime();
+    Lib_MemCpy(&prev_save_ctx, &gSaveContext, offsetof(SaveContext, fileNum));
+}
+
+extern s32 gFlashSaveSizes[];
+extern u16 D_801C6A58[];
+
+#define CHECK_NEWF(newf)                                                                                 \
+    ((newf)[0] != 'Z' || (newf)[1] != 'E' || (newf)[2] != 'L' || (newf)[3] != 'D' || (newf)[4] != 'A' || \
+     (newf)[5] != '3')
+
+// @recomp Patched to change the entrance for autosaves and initialize autosaves.
+void Sram_OpenSave(FileSelectState* fileSelect, SramContext* sramCtx) {
+    s32 i;
+    s32 pad;
+    s32 phi_t1;
+    s32 pad1;
+    s32 fileNum;
+
+    if (gSaveContext.flashSaveAvailable) {
+        bzero(sramCtx->saveBuf, SAVE_BUFFER_SIZE);
+
+        if (gSaveContext.fileNum == 0xFF) {
+            SysFlashrom_ReadData(sramCtx->saveBuf, gFlashSaveStartPages[0], gFlashSaveNumPages[0]);
+        } else if (fileSelect->isOwlSave[gSaveContext.fileNum + 2]) {
+            phi_t1 = gSaveContext.fileNum + 2;
+            phi_t1 *= 2;
+
+            if (SysFlashrom_ReadData(sramCtx->saveBuf, gFlashSaveStartPages[phi_t1], gFlashSaveNumPages[phi_t1]) != 0) {
+                SysFlashrom_ReadData(sramCtx->saveBuf, gFlashSaveStartPages[phi_t1 + 1],
+                                     gFlashSaveNumPages[phi_t1 + 1]);
+            }
+        } else {
+            phi_t1 = gSaveContext.fileNum;
+            phi_t1 *= 2;
+
+            if (SysFlashrom_ReadData(sramCtx->saveBuf, gFlashSaveStartPages[phi_t1], gFlashSaveNumPages[phi_t1]) != 0) {
+                SysFlashrom_ReadData(sramCtx->saveBuf, gFlashSaveStartPages[phi_t1 + 1],
+                                     gFlashSaveNumPages[phi_t1 + 1]);
+            }
+        }
+
+        Lib_MemCpy(&gSaveContext, sramCtx->saveBuf, gFlashSaveSizes[phi_t1]);
+
+        if (CHECK_NEWF(gSaveContext.save.saveInfo.playerData.newf)) {
+            SysFlashrom_ReadData(sramCtx->saveBuf, gFlashSaveStartPages[phi_t1 + 1], gFlashSaveNumPages[phi_t1 + 1]);
+            Lib_MemCpy(&gSaveContext, sramCtx->saveBuf, gFlashSaveSizes[phi_t1]);
+        }
+    }
+
+    gSaveContext.save.saveInfo.playerData.magicLevel = 0;
+
+    if (!gSaveContext.save.isOwlSave) {
+        for (i = 0; i < ARRAY_COUNT(gSaveContext.eventInf); i++) {
+            gSaveContext.eventInf[i] = 0;
+        }
+
+        for (i = 0; i < ARRAY_COUNT(gSaveContext.cycleSceneFlags); i++) {
+            gSaveContext.cycleSceneFlags[i].chest = gSaveContext.save.saveInfo.permanentSceneFlags[i].chest;
+            gSaveContext.cycleSceneFlags[i].switch0 = gSaveContext.save.saveInfo.permanentSceneFlags[i].switch0;
+            gSaveContext.cycleSceneFlags[i].switch1 = gSaveContext.save.saveInfo.permanentSceneFlags[i].switch1;
+            gSaveContext.cycleSceneFlags[i].clearedRoom = gSaveContext.save.saveInfo.permanentSceneFlags[i].clearedRoom;
+            gSaveContext.cycleSceneFlags[i].collectible = gSaveContext.save.saveInfo.permanentSceneFlags[i].collectible;
+        }
+
+        for (i = 0; i < TIMER_ID_MAX; i++) {
+            gSaveContext.timerStates[i] = TIMER_STATE_OFF;
+            gSaveContext.timerCurTimes[i] = SECONDS_TO_TIMER(0);
+            gSaveContext.timerTimeLimits[i] = SECONDS_TO_TIMER(0);
+            gSaveContext.timerStartOsTimes[i] = 0;
+            gSaveContext.timerStopTimes[i] = SECONDS_TO_TIMER(0);
+            gSaveContext.timerPausedOsTimes[i] = 0;
+        }
+
+        if (gSaveContext.save.isFirstCycle) {
+            gSaveContext.save.entrance = ENTRANCE(SOUTH_CLOCK_TOWN, 0);
+            gSaveContext.save.day = 0;
+            gSaveContext.save.time = CLOCK_TIME(6, 0) - 1;
+        } else {
+            gSaveContext.save.entrance = ENTRANCE(CUTSCENE, 0);
+            gSaveContext.nextCutsceneIndex = 0;
+            gSaveContext.save.playerForm = PLAYER_FORM_HUMAN;
+        }
+    }
+    // @recomp Handle autosaves.
+    else if (gSaveContext.save.isOwlSave == SAVE_TYPE_AUTOSAVE) {
+        gSaveContext.save.entrance = ENTRANCE(SOUTH_CLOCK_TOWN, 0);
+
+        for (i = 0; i < ARRAY_COUNT(gSaveContext.cycleSceneFlags); i++) {
+            gSaveContext.cycleSceneFlags[i].chest = gSaveContext.save.saveInfo.permanentSceneFlags[i].chest;
+            gSaveContext.cycleSceneFlags[i].switch0 = gSaveContext.save.saveInfo.permanentSceneFlags[i].switch0;
+            gSaveContext.cycleSceneFlags[i].switch1 = gSaveContext.save.saveInfo.permanentSceneFlags[i].switch1;
+            gSaveContext.cycleSceneFlags[i].clearedRoom = gSaveContext.save.saveInfo.permanentSceneFlags[i].clearedRoom;
+            gSaveContext.cycleSceneFlags[i].collectible = gSaveContext.save.saveInfo.permanentSceneFlags[i].collectible;
+        }
+
+        if (gSaveContext.save.saveInfo.scarecrowSpawnSongSet) {
+            Lib_MemCpy(gScarecrowSpawnSongPtr, gSaveContext.save.saveInfo.scarecrowSpawnSong,
+                       sizeof(gSaveContext.save.saveInfo.scarecrowSpawnSong));
+
+            for (i = 0; i != ARRAY_COUNT(gSaveContext.save.saveInfo.scarecrowSpawnSong); i++) {}
+        }
+
+        fileNum = gSaveContext.fileNum;
+        func_80147314(sramCtx, fileNum);
+    }
+    else {
+        gSaveContext.save.entrance = D_801C6A58[(void)0, gSaveContext.save.owlWarpId];
+        if ((gSaveContext.save.entrance == ENTRANCE(SOUTHERN_SWAMP_POISONED, 10)) &&
+            CHECK_WEEKEVENTREG(WEEKEVENTREG_CLEARED_WOODFALL_TEMPLE)) {
+            gSaveContext.save.entrance = ENTRANCE(SOUTHERN_SWAMP_CLEARED, 10);
+        } else if ((gSaveContext.save.entrance == ENTRANCE(MOUNTAIN_VILLAGE_WINTER, 8)) &&
+                   CHECK_WEEKEVENTREG(WEEKEVENTREG_CLEARED_SNOWHEAD_TEMPLE)) {
+            gSaveContext.save.entrance = ENTRANCE(MOUNTAIN_VILLAGE_SPRING, 8);
+        }
+
+        for (i = 0; i < ARRAY_COUNT(gSaveContext.cycleSceneFlags); i++) {
+            gSaveContext.cycleSceneFlags[i].chest = gSaveContext.save.saveInfo.permanentSceneFlags[i].chest;
+            gSaveContext.cycleSceneFlags[i].switch0 = gSaveContext.save.saveInfo.permanentSceneFlags[i].switch0;
+            gSaveContext.cycleSceneFlags[i].switch1 = gSaveContext.save.saveInfo.permanentSceneFlags[i].switch1;
+            gSaveContext.cycleSceneFlags[i].clearedRoom = gSaveContext.save.saveInfo.permanentSceneFlags[i].clearedRoom;
+            gSaveContext.cycleSceneFlags[i].collectible = gSaveContext.save.saveInfo.permanentSceneFlags[i].collectible;
+        }
+
+        if (gSaveContext.save.saveInfo.scarecrowSpawnSongSet) {
+            Lib_MemCpy(gScarecrowSpawnSongPtr, gSaveContext.save.saveInfo.scarecrowSpawnSong,
+                       sizeof(gSaveContext.save.saveInfo.scarecrowSpawnSong));
+
+            for (i = 0; i != ARRAY_COUNT(gSaveContext.save.saveInfo.scarecrowSpawnSong); i++) {}
+        }
+
+        fileNum = gSaveContext.fileNum;
+        func_80147314(sramCtx, fileNum);
+    }
+
+    // @recomp Initialize the autosave state tracking.
+    autosave_init();
+}
--- a/patches/input.c
+++ b/patches/input.c
@ -2085,8 +2085,6 @@ Gfx* Gfx_DrawRect_DropShadow(Gfx* gfx, s16 rectLeft, s16 rectTop, s16 rectWidth,
                             s16 r, s16 g, s16 b, s16 a);

 void draw_dpad(PlayState* play) {
-    InterfaceContext* interfaceCtx = &play->interfaceCtx;
-
    OPEN_DISPS(play->state.gfxCtx);

    gEXForceUpscale2D(OVERLAY_DISP++, 1);
--- a/patches/patches.h
+++ b/patches/patches.h
@ -9,6 +9,7 @@
 #define osFlashWriteArray osFlashWriteArray_recomp
 #define osFlashWriteBuffer osFlashWriteBuffer_recomp
 #define osWritebackDCache osWritebackDCache_recomp
+#define osGetTime osGetTime_recomp

 #define osContStartReadData osContStartReadData_recomp
 #define osContGetReadData osContGetReadData_recomp
@ -91,6 +92,7 @@ void clear_camera_skipped();
 void edit_billboard_groups(PlayState* play);
 bool camera_was_skipped();
 void room_load_hook(PlayState* play, Room* room);
+void draw_autosave_icon(PlayState* play);

 void recomp_crash(const char* err);

--- a/patches/play_patches.c
+++ b/patches/play_patches.c
@ -33,6 +33,7 @@ void Play_Main(GameState* thisx) {
        camera_pre_play_update(this);
        Play_Update(this);
        camera_post_play_update(this);
+        autosave_post_play_update(this);
        this->state.gfxCtx = gfxCtx;
    }

--- a/patches/play_patches.h
+++ b/patches/play_patches.h
@ -7,5 +7,6 @@ void debug_play_update(PlayState* play);
 void camera_pre_play_update(PlayState* play);
 void camera_post_play_update(PlayState* play);
 void matrix_play_update(PlayState* play);
+void autosave_post_play_update(PlayState* play);

 #endif
--- a/patches/syms.ld
+++ b/patches/syms.ld
@ -47,3 +47,5 @@ osContGetReadData_recomp = 0x8F000074;
 osContStartQuery_recomp = 0x8F000078;
 osContGetQuery_recomp = 0x8F00007C;
 recomp_get_mouse_deltas = 0x8F000080; 
+bcmp_recomp = 0x8F000084;
+osGetTime_recomp = 0x8F000088;
--- a/patches/ui_patches.c
+++ b/patches/ui_patches.c
@ -486,10 +486,11 @@ void Interface_Draw(PlayState* play) {

        Magic_DrawMeter(play);
        
-        // @recomp Draw the D-Pad and its item icons
+        // @recomp Draw the D-Pad and its item icons as well as the autosave icon if the game is unpaused.
        if (pauseCtx->state != PAUSE_STATE_MAIN) {
            draw_dpad(play);
            draw_dpad_icons(play);
+            draw_autosave_icon(play);
        }

        // @recomp Right align and shift right/down for minimap
--- a/src/recomp/pi.cpp
+++ b/src/recomp/pi.cpp
@ -107,7 +107,6 @@ void saving_thread_func(RDRAM_ARG1) {

        // If an action came through that affected the save file, save the updated contents.
        if (save_buffer_updated) {
-            printf("Writing updated save buffer to disk\n");
            update_save_file();
        }
    }