From dd5e72a02300539676b80f9fa07114c97734aacb Mon Sep 17 00:00:00 2001
From: Adam Bird <Archez@users.noreply.github.com>
Date: Wed, 29 Nov 2023 00:29:25 -0500
Subject: [PATCH] limit entrance discovered saving to end of operation (#3459)

---
 .../randomizer/randomizer_entrance.c          | 28 +++++++++++--------
 .../randomizer/randomizer_entrance.h          |  2 +-
 .../randomizer/randomizer_grotto.c            |  4 +--
 3 files changed, 20 insertions(+), 14 deletions(-)

diff --git a/soh/soh/Enhancements/randomizer/randomizer_entrance.c b/soh/soh/Enhancements/randomizer/randomizer_entrance.c
index f2f1a8a3f35..e6ec3fef3fa 100644
--- a/soh/soh/Enhancements/randomizer/randomizer_entrance.c
+++ b/soh/soh/Enhancements/randomizer/randomizer_entrance.c
@@ -76,7 +76,7 @@ static s16 newIceCavernEntrance             = ICE_CAVERN_ENTRANCE;
 static s8 hasCopiedEntranceTable = 0;
 static s8 hasModifiedEntranceTable = 0;
 
-void Entrance_SetEntranceDiscovered(u16 entranceIndex);
+void Entrance_SetEntranceDiscovered(u16 entranceIndex, u8 isReversedEntrance);
 
 u8 Entrance_EntranceIsNull(EntranceOverride* entranceOverride) {
     return entranceOverride->index == 0 && entranceOverride->destination == 0 && entranceOverride->blueWarp == 0
@@ -276,13 +276,13 @@ s16 Entrance_OverrideNextIndex(s16 nextEntranceIndex) {
         return nextEntranceIndex;
     }
 
-    Entrance_SetEntranceDiscovered(nextEntranceIndex);
+    Entrance_SetEntranceDiscovered(nextEntranceIndex, false);
     EntranceTracker_SetLastEntranceOverride(nextEntranceIndex);
     return Grotto_OverrideSpecialEntrance(Entrance_GetOverride(nextEntranceIndex));
 }
 
 s16 Entrance_OverrideDynamicExit(s16 dynamicExitIndex) {
-    Entrance_SetEntranceDiscovered(dynamicExitList[dynamicExitIndex]);
+    Entrance_SetEntranceDiscovered(dynamicExitList[dynamicExitIndex], false);
     EntranceTracker_SetLastEntranceOverride(dynamicExitList[dynamicExitIndex]);
     return Grotto_OverrideSpecialEntrance(Entrance_GetOverride(dynamicExitList[dynamicExitIndex]));
 }
@@ -784,7 +784,7 @@ u8 Entrance_GetIsEntranceDiscovered(u16 entranceIndex) {
     return 0;
 }
 
-void Entrance_SetEntranceDiscovered(u16 entranceIndex) {
+void Entrance_SetEntranceDiscovered(u16 entranceIndex, u8 isReversedEntrance) {
     // Skip if already set to save time from setting the connected entrance or
     // if this entrance is outside of the randomized entrance range (i.e. is a dynamic entrance)
     if (entranceIndex > MAX_ENTRANCE_RANDO_USED_INDEX || Entrance_GetIsEntranceDiscovered(entranceIndex)) {
@@ -796,14 +796,20 @@ void Entrance_SetEntranceDiscovered(u16 entranceIndex) {
     if (idx < SAVEFILE_ENTRANCES_DISCOVERED_IDX_COUNT) {
         u32 entranceBit = 1 << (entranceIndex - (idx * bitsPerIndex));
         gSaveContext.sohStats.entrancesDiscovered[idx] |= entranceBit;
-        // Set connected
-        for (size_t i = 0; i < ENTRANCE_OVERRIDES_MAX_COUNT; i++) {
-            if (entranceIndex == gSaveContext.entranceOverrides[i].index) {
-                Entrance_SetEntranceDiscovered(gSaveContext.entranceOverrides[i].overrideDestination);
-                break;
+
+        // Set reverse entrance when not decoupled
+        if (!Randomizer_GetSettingValue(RSK_DECOUPLED_ENTRANCES) && !isReversedEntrance) {
+            for (size_t i = 0; i < ENTRANCE_OVERRIDES_MAX_COUNT; i++) {
+                if (entranceIndex == gSaveContext.entranceOverrides[i].index) {
+                    Entrance_SetEntranceDiscovered(gSaveContext.entranceOverrides[i].overrideDestination, true);
+                    break;
+                }
             }
         }
     }
-    // Save entrancesDiscovered
-    Save_SaveSection(SECTION_ID_ENTRANCES);
+
+    // Save entrancesDiscovered when it is not the reversed entrance
+    if (!isReversedEntrance) {
+        Save_SaveSection(SECTION_ID_ENTRANCES);
+    }
 }
diff --git a/soh/soh/Enhancements/randomizer/randomizer_entrance.h b/soh/soh/Enhancements/randomizer/randomizer_entrance.h
index c00f29701b5..c71b2493ab6 100644
--- a/soh/soh/Enhancements/randomizer/randomizer_entrance.h
+++ b/soh/soh/Enhancements/randomizer/randomizer_entrance.h
@@ -63,7 +63,7 @@ void Entrance_OverrideSpawnScene(int32_t sceneNum, int32_t spawn);
 int32_t Entrance_OverrideSpawnSceneRoom(int32_t sceneNum, int32_t spawn, int32_t room);
 void Entrance_EnableFW(void);
 uint8_t Entrance_GetIsEntranceDiscovered(uint16_t entranceIndex);
-void Entrance_SetEntranceDiscovered(uint16_t entranceIndex);
+void Entrance_SetEntranceDiscovered(uint16_t entranceIndex, uint8_t isReversedEntrance);
 #ifdef __cplusplus
 }
 #endif
diff --git a/soh/soh/Enhancements/randomizer/randomizer_grotto.c b/soh/soh/Enhancements/randomizer/randomizer_grotto.c
index 408dc01601e..78e429fb229 100644
--- a/soh/soh/Enhancements/randomizer/randomizer_grotto.c
+++ b/soh/soh/Enhancements/randomizer/randomizer_grotto.c
@@ -140,7 +140,7 @@ s16 Grotto_OverrideSpecialEntrance(s16 nextEntranceIndex) {
     // If Link hits a grotto exit, load the entrance index from the grotto exit list
     // based on the current grotto ID
     if (nextEntranceIndex == 0x7FFF) {
-        Entrance_SetEntranceDiscovered(ENTRANCE_RANDO_GROTTO_EXIT_START + grottoId);
+        Entrance_SetEntranceDiscovered(ENTRANCE_RANDO_GROTTO_EXIT_START + grottoId, false);
         EntranceTracker_SetLastEntranceOverride(ENTRANCE_RANDO_GROTTO_EXIT_START + grottoId);
         nextEntranceIndex = grottoExitList[grottoId];
     }
@@ -211,7 +211,7 @@ void Grotto_OverrideActorEntrance(Actor* thisx) {
 
         if (grottoContent == grottoLoadTable[index].content && gPlayState->sceneNum == grottoLoadTable[index].scene) {
             // Find the override for the matching index from the grotto Load List
-            Entrance_SetEntranceDiscovered(ENTRANCE_RANDO_GROTTO_LOAD_START + index);
+            Entrance_SetEntranceDiscovered(ENTRANCE_RANDO_GROTTO_LOAD_START + index, false);
             EntranceTracker_SetLastEntranceOverride(ENTRANCE_RANDO_GROTTO_LOAD_START + index);
             index = grottoLoadList[index];