From d52815caa2c0f385ae61e38ecc7b5bddd7ccf7b3 Mon Sep 17 00:00:00 2001
From: Ash Ketchum <no-reply@sl0p.foo>
Date: Wed, 15 Jul 2026 00:28:26 +0200
Subject: fastboot: skip intro/title/menu and autoload save if one exists

Three small hooks, all gated on CheckForPlayerNameInSRAM (carry = save present):
- home/init.asm: skip 'predef PlayIntro' when a save exists
- engine/movie/title.asm (PrepareTitleScreen): jp MainMenu, skipping the
  title screen (only the boot path hits PrepareTitleScreen; return-to-title
  paths jp DisplayTitleScreen directly, so they're unaffected)
- engine/menus/main_menu.asm (MainMenu): after TryLoadSaveFile, if
  wSaveFileStatus==2 jp SpecialEnterMap, skipping the CONTINUE menu

Exported CheckForPlayerNameInSRAM (:: ) so home/init.asm can farcall it.
New game (no save) path is fully preserved. Ship pokeyellow.gbc only; the
_DEBUG build overflows home ROM0 by 8 bytes with the init hook.
---
 engine/menus/main_menu.asm |  7 ++++++-
 engine/movie/title.asm     | 12 ++++++++++++
 home/init.asm              |  4 ++++
 3 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/engine/menus/main_menu.asm b/engine/menus/main_menu.asm
index d0e1cc1b..c41a7d10 100644
--- a/engine/menus/main_menu.asm
+++ b/engine/menus/main_menu.asm
@@ -10,6 +10,11 @@ MainMenu:
 
 	predef TryLoadSaveFile
 
+; FASTBOOT: if the save loaded cleanly (status 2), skip the menu and continue
+	ld a, [wSaveFileStatus]
+	cp 2
+	jp z, SpecialEnterMap
+
 .mainMenuLoop
 	ld c, 20
 	call DelayFrames
@@ -273,7 +278,7 @@ DisplayOptionMenu:
 	callfar DisplayOptionMenu_
 	ret
 
-CheckForPlayerNameInSRAM:
+CheckForPlayerNameInSRAM::
 	ld a, RAMG_SRAM_ENABLE
 	ld [rRAMG], a
 	ld a, BMODE_ADVANCED
diff --git a/engine/movie/title.asm b/engine/movie/title.asm
index 4ff22800..3cd2cea2 100644
--- a/engine/movie/title.asm
+++ b/engine/movie/title.asm
@@ -1,4 +1,16 @@
 PrepareTitleScreen::
+; FASTBOOT: if a save file exists, skip the title screen straight to the menu
+; (which auto-continues). Only the boot path reaches PrepareTitleScreen; the
+; "return to title" paths jp DisplayTitleScreen directly, so they're unaffected.
+	call CheckForPlayerNameInSRAM
+	jr nc, .fastbootNormalTitle
+	xor a
+	ld hl, wStatusFlags6
+	ld [hli], a
+	ld [hli], a
+	ld [hl], a
+	jp MainMenu
+.fastbootNormalTitle
 	; These debug names are already copied later in PrepareOakSpeech.
 	; Removing the unused copies below has no apparent impact.
 	; CopyDebugName can also be safely deleted afterwards.
diff --git a/home/init.asm b/home/init.asm
index bef73b7e..fc426e29 100644
--- a/home/init.asm
+++ b/home/init.asm
@@ -98,7 +98,11 @@ Init::
 	dec a
 	ld [wUpdateSpritesEnabled], a
 
+; FASTBOOT: skip the GameFreak/Pikachu intro if a save file exists
+	farcall CheckForPlayerNameInSRAM
+	jr c, .fastbootSkipIntro
 	predef PlayIntro
+.fastbootSkipIntro
 
 	call DisableLCD
 	call ClearVram
-- 
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