From 3fc40fa3ffd608c3e2429f1d301e7dc26728a090 Mon Sep 17 00:00:00 2001
From: Christopher Leggett <chris@leggett.dev>
Date: Sat, 10 Feb 2024 15:58:53 -0500
Subject: [PATCH] Sets up hook to override silver rupee behavior.

---
 soh/soh/Enhancements/mods.cpp                 | 22 +++++++++++
 .../randomizer/actors/z_en_g_switch_rando.c   | 37 +++++++++++++++++++
 .../randomizer/actors/z_en_g_switch_rando.h   | 17 +++++++++
 3 files changed, 76 insertions(+)
 create mode 100644 soh/soh/Enhancements/randomizer/actors/z_en_g_switch_rando.c
 create mode 100644 soh/soh/Enhancements/randomizer/actors/z_en_g_switch_rando.h

diff --git a/soh/soh/Enhancements/mods.cpp b/soh/soh/Enhancements/mods.cpp
index 26adf611d..d10077758 100644
--- a/soh/soh/Enhancements/mods.cpp
+++ b/soh/soh/Enhancements/mods.cpp
@@ -27,6 +27,7 @@
 #include "src/overlays//actors/ovl_Fishing/z_fishing.h"
 #include "objects/object_link_boy/object_link_boy.h"
 #include "objects/object_link_child/object_link_child.h"
+#include "soh/Enhancements/randomizer/actors/z_en_g_switch_rando.h"
 
 extern "C" {
 #include <z64.h>
@@ -1151,6 +1152,26 @@ void RegisterRandomizerSheikSpawn() {
     });
 }
 
+//Changes silver rupee update and draw functions, if silver rupees shuffle is enabled
+void RegisterSilverRupeeShuffle() {
+    GameInteractor::Instance->RegisterGameHook<GameInteractor::OnActorInit>([](void* refActor) {
+        if (!gPlayState) {
+            return;
+        }
+        if (!IS_RANDO || OTRGlobals::Instance->gRandoContext->GetOption(RSK_SHUFFLE_SILVER_RUPEES).Is(RO_SILVER_SHUFFLE_VANILLA)) {
+            return;
+        }
+        auto* actor = static_cast<Actor*>(refActor);
+        if (actor->id == ACTOR_EN_G_SWITCH) {
+            auto* silverRupee = reinterpret_cast<EnGSwitch*>(actor);
+            if (silverRupee->type == ENGSWITCH_SILVER_RUPEE) {
+                silverRupee->actionFunc = EnGSwitch_Randomizer_SilverRupeeIdle;
+                silverRupee->actor.draw = EnGSwitch_Randomizer_Draw;
+            }
+        }
+    });
+}
+
 //Boss souls require an additional item (represented by a RAND_INF) to spawn a boss in a particular lair
 void RegisterBossSouls() {
     GameInteractor::Instance->RegisterGameHook<GameInteractor::OnActorInit>([](void* actor) {
@@ -1627,6 +1648,7 @@ void InitMods() {
     RegisterAltTrapTypes();
     RegisterRandomizerSheikSpawn();
     RegisterBossSouls();
+    RegisterSilverRupeeShuffle();
     RegisterRandomizedEnemySizes();
     RegisterToTMedallions();
     RegisterNoSwim();
diff --git a/soh/soh/Enhancements/randomizer/actors/z_en_g_switch_rando.c b/soh/soh/Enhancements/randomizer/actors/z_en_g_switch_rando.c
new file mode 100644
index 000000000..b78bce33e
--- /dev/null
+++ b/soh/soh/Enhancements/randomizer/actors/z_en_g_switch_rando.c
@@ -0,0 +1,37 @@
+#include "z_en_g_switch_rando.h"
+
+void EnGSwitch_Kill(EnGSwitch* this, PlayState* play);
+
+void EnGSwitch_Randomizer_SilverRupeeIdle(EnGSwitch* self, PlayState* play) {
+    Player* player = GET_PLAYER(play);
+
+    self->actor.shape.rot.y += 0x800;
+    if (self->actor.xyzDistToPlayerSq < 900.0f) {
+        if (IS_RANDO && Randomizer_GetSettingValue(RSK_SHUFFLE_SILVER_RUPEES) != RO_SILVER_SHUFFLE_VANILLA) {
+            GetItemEntry getItem = ItemTable_RetrieveEntry(MOD_NONE, GI_NUTS_5);
+            if (getItem.modIndex == MOD_NONE) {
+                // RANDOTOD: Move this into Item_Give() or some other more central location
+                if (getItem.getItemId == GI_SWORD_BGS) {
+                    gSaveContext.bgsFlag = true;
+                }
+                Item_Give(play, getItem.itemId);
+            } else if (getItem.modIndex == MOD_RANDOMIZER) {
+                Randomizer_Item_Give(play, getItem);
+            }
+            self->killTimer = 0;
+            self->actionFunc = EnGSwitch_Kill;
+        }
+    }
+}
+
+void EnGSwitch_Randomizer_Draw(Actor* thisx, PlayState* play) {
+    EnGSwitch* this = (EnGSwitch*)thisx;
+    if (IS_RANDO && Randomizer_GetSettingValue(RSK_SHUFFLE_SILVER_RUPEES) != RO_SILVER_SHUFFLE_VANILLA &&
+        this->type == ENGSWITCH_SILVER_RUPEE) {
+        OPEN_DISPS(play->state.gfxCtx);
+        Matrix_Scale(17.5f, 17.5f, 17.5f, MTXMODE_APPLY);
+        GetItemEntry getItem = ItemTable_RetrieveEntry(MOD_NONE, GI_NUTS_5);
+        GetItemEntry_Draw(play, getItem);
+        CLOSE_DISPS(play->state.gfxCtx);
+    }
+}
diff --git a/soh/soh/Enhancements/randomizer/actors/z_en_g_switch_rando.h b/soh/soh/Enhancements/randomizer/actors/z_en_g_switch_rando.h
new file mode 100644
index 000000000..d725a8749
--- /dev/null
+++ b/soh/soh/Enhancements/randomizer/actors/z_en_g_switch_rando.h
@@ -0,0 +1,17 @@
+#ifndef SHIP_Z_EN_G_SWITCH_RANDO_H
+#define SHIP_Z_EN_G_SWITCH_RANDO_H
+
+#include "overlays/actors/ovl_En_G_Switch/z_en_g_switch.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void EnGSwitch_Randomizer_SilverRupeeIdle(EnGSwitch *self, PlayState *play);
+void EnGSwitch_Randomizer_Draw(Actor *thisx, PlayState *play);
+
+#ifdef __cplusplus
+};
+#endif
+
+#endif //SHIP_Z_EN_G_SWITCH_RANDO_H