From 614c41105896733bb18da5871a95c8df4e55fad5 Mon Sep 17 00:00:00 2001
From: Dragorn421 <Dragorn421@users.noreply.github.com>
Date: Fri, 23 Aug 2024 22:26:53 +0200
Subject: [PATCH] match z_title.c (#2075)

---
 include/z64.h                               |  8 +--
 src/overlays/gamestates/ovl_title/z_title.c | 58 ++++++++++++++++++++-
 undefined_syms.txt                          |  6 +++
 3 files changed, 66 insertions(+), 6 deletions(-)

diff --git a/include/z64.h b/include/z64.h
index fc6e89aded..39325ad9a7 100644
--- a/include/z64.h
+++ b/include/z64.h
@@ -128,13 +128,13 @@ typedef struct ConsoleLogoState {
     /* 0x00A4 */ u8* staticSegment;
     /* 0x00A8 */ View view;
     /* 0x01D0 */ SramContext sramCtx;
-    /* 0x01D4 */ u16 unk_1D4; // not used in mq dbg (some sort of timer that doesn't seem to affect anything)
+    /* 0x01D4 */ s16 unk_1D4;
     /* 0x01D6 */ s16 coverAlpha;
-    /* 0x01D8 */ s16 addAlpha; // not used in mq dbg
-    /* 0x01DA */ u16 visibleDuration; // not used in mq dbg
+    /* 0x01D8 */ s16 addAlpha;
+    /* 0x01DA */ s16 visibleDuration;
     /* 0x01DC */ s16 ult;
     /* 0x01DE */ s16 uls;
-    /* 0x01E0 */ char unk_1E0[0x01];
+    /* 0x01E0 */ u8 unk_1E0;
     /* 0x01E1 */ u8 exit;
     /* 0x01E2 */ char unk_1E2[0x06];
 } ConsoleLogoState; // size = 0x1E8
diff --git a/src/overlays/gamestates/ovl_title/z_title.c b/src/overlays/gamestates/ovl_title/z_title.c
index 3d1ea7a35d..5e4a3c8bcc 100644
--- a/src/overlays/gamestates/ovl_title/z_title.c
+++ b/src/overlays/gamestates/ovl_title/z_title.c
@@ -7,8 +7,19 @@
 #include "global.h"
 #include "alloca.h"
 #include "versions.h"
+
+#if PLATFORM_N64
+#include "n64dd.h"
+#endif
+
 #include "assets/textures/nintendo_rogo_static/nintendo_rogo_static.h"
 
+// TODO
+void func_800014E8_unknown(void);
+s32 func_801C8090_unknown(void);
+void func_801C7BC4_unknown(void);
+s32 func_801C7ED0_unknown(void);
+
 #if OOT_DEBUG
 void ConsoleLogo_PrintBuildInfo(Gfx** gfxP) {
     Gfx* gfx;
@@ -33,10 +44,29 @@ void ConsoleLogo_PrintBuildInfo(Gfx** gfxP) {
 }
 #endif
 
-// Note: In other rom versions this function also updates unk_1D4, coverAlpha, addAlpha, visibleDuration to calculate
-// the fade-in/fade-out + the duration of the n64 logo animation
 void ConsoleLogo_Calc(ConsoleLogoState* this) {
+#if PLATFORM_N64
+    if ((this->coverAlpha == 0) && (this->visibleDuration != 0)) {
+        this->unk_1D4--;
+        this->visibleDuration--;
+        if (this->unk_1D4 == 0) {
+            this->unk_1D4 = 400;
+        }
+    } else {
+        this->coverAlpha += this->addAlpha;
+        if (this->coverAlpha <= 0) {
+            this->coverAlpha = 0;
+            this->addAlpha = 3;
+        } else if (this->coverAlpha >= 255) {
+            this->coverAlpha = 255;
+            this->exit = true;
+        }
+    }
+    this->uls = this->ult & 0x7F;
+    this->ult++;
+#else
     this->exit = true;
+#endif
 }
 
 void ConsoleLogo_SetupView(ConsoleLogoState* this, f32 x, f32 y, f32 z) {
@@ -154,13 +184,37 @@ void ConsoleLogo_Main(GameState* thisx) {
 void ConsoleLogo_Destroy(GameState* thisx) {
     ConsoleLogoState* this = (ConsoleLogoState*)thisx;
 
+#if PLATFORM_N64
+    if (this->unk_1E0) {
+        if (func_801C8090_unknown() != 0) {
+            func_800D31A0();
+        }
+        func_801C7BC4_unknown();
+    }
+#endif
+
     Sram_InitSram(&this->state, &this->sramCtx);
+
+#if PLATFORM_N64
+    func_800014E8_unknown();
+#endif
 }
 
 void ConsoleLogo_Init(GameState* thisx) {
     u32 size = (uintptr_t)_nintendo_rogo_staticSegmentRomEnd - (uintptr_t)_nintendo_rogo_staticSegmentRomStart;
     ConsoleLogoState* this = (ConsoleLogoState*)thisx;
 
+#if PLATFORM_N64
+    if ((B_80121AE0 != 0) && ((u8)B_80121AE1 != 0) && (B_80121AE2 == 0)) {
+        if (func_801C7ED0_unknown() != 0) {
+            func_800D31A0();
+        }
+        this->unk_1E0 = true;
+    } else {
+        this->unk_1E0 = false;
+    }
+#endif
+
     this->staticSegment = GAME_STATE_ALLOC(&this->state, size, "../z_title.c", 611);
     PRINTF("z_title.c\n");
     ASSERT(this->staticSegment != NULL, "this->staticSegment != NULL", "../z_title.c", 614);
diff --git a/undefined_syms.txt b/undefined_syms.txt
index 10eb929100..5c2fcb02ff 100644
--- a/undefined_syms.txt
+++ b/undefined_syms.txt
@@ -26,4 +26,10 @@ func_801C8510_unknown = 0x801C8510;
 D_801DA410 = 0x801DA410;
 D_801E8090 = 0x801E8090;
 
+// z_title.c
+func_800014E8_unknown = 0x800014E8;
+func_801C8090_unknown = 0x801C8090;
+func_801C7BC4_unknown = 0x801C7BC4;
+func_801C7ED0_unknown = 0x801C7ED0;
+
 #endif