From e9d3324bc06faa7de3b7a35d1f9429e610e8a761 Mon Sep 17 00:00:00 2001
From: Narishma-gb <194818981+Narishma-gb@users.noreply.github.com>
Date: Mon, 15 Dec 2025 21:14:17 +0100
Subject: Comment more unreferenced local labels (#550)

---
 engine/movie/credits.asm | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

(limited to 'engine/movie')

diff --git a/engine/movie/credits.asm b/engine/movie/credits.asm
index b1ca7c91..77484a80 100644
--- a/engine/movie/credits.asm
+++ b/engine/movie/credits.asm
@@ -6,10 +6,10 @@ HallOfFamePC:
 	call DisableLCD
 	ld hl, vFont
 	ld bc, ($80 tiles) / 2
-	call ZeroMemory
+	call ShiftFontColorIndex
 	ld hl, vChars2 tile $60
 	ld bc, ($20 tiles) / 2
-	call ZeroMemory
+	call ShiftFontColorIndex
 	ld hl, vChars2 tile $7e
 	ld bc, TILE_SIZE
 	ld a, $ff ; solid black
@@ -33,7 +33,7 @@ HallOfFamePC:
 	ld [wNumCreditsMonsDisplayed], a
 	jp Credits
 
-FadeInCreditsText:
+FadeInCredits:
 	ld hl, HoFGBPalettes
 	ld b, 4
 .loop
@@ -145,15 +145,18 @@ CreditsCopyTileMapToVRAM:
 	ldh [hAutoBGTransferEnabled], a
 	jp Delay3
 
-ZeroMemory:
-; zero bc bytes at hl
+ShiftFontColorIndex:
+; Zero every second byte at hl, writing a total of bc bytes.
+; When used on VRAM font characters that contain only black and white shades,
+; it shifts the color index: black -> light gray, allowing palette-controlled
+; text fade-in during the Credits roll, while the black bars remain solid.
 	ld [hl], 0
 	inc hl
 	inc hl
 	dec bc
 	ld a, b
 	or c
-	jr nz, ZeroMemory
+	jr nz, ShiftFontColorIndex
 	ret
 
 FillFourRowsWithBlack:
@@ -215,7 +218,7 @@ Credits:
 	pop de
 	jr .nextCreditsCommand
 .fadeInTextAndShowMon
-	call FadeInCreditsText
+	call FadeInCredits
 	ld c, 90
 	jr .next1
 .showTextAndShowMon
@@ -225,7 +228,7 @@ Credits:
 	call DisplayCreditsMon
 	jr .nextCreditsScreen
 .fadeInText
-	call FadeInCreditsText
+	call FadeInCredits
 	ld c, 120
 	jr .next2
 .showText
@@ -254,7 +257,7 @@ Credits:
 	hlcoord 4, 9
 	inc de
 	call PlaceString
-	jp FadeInCreditsText
+	jp FadeInCredits
 
 TheEndTextString:
 ; "T H E  E N D"
-- 
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