Complete and improve debug name labels (#408)

engine/movie/oak_speech/oak_speech.asm

@@ -1,4 +1,4 @@
-SetDefaultNames:
+PrepareOakSpeech:
 	ld a, [wLetterPrintingDelayFlags]
 	push af
 	ld a, [wOptions]
@@ -22,11 +22,13 @@ SetDefaultNames:
 	ld a, [wOptionsInitialized]
 	and a
 	call z, InitOptions
-	ld hl, NintenText
+	; These debug names are used for StartNewGameDebug.
+	; TestBattle uses the debug names from DebugMenu.
+	ld hl, DebugNewGamePlayerName
 	ld de, wPlayerName
 	ld bc, NAME_LENGTH
 	call CopyData
-	ld hl, SonyText
+	ld hl, DebugNewGameRivalName
 	ld de, wRivalName
 	ld bc, NAME_LENGTH
 	jp CopyData
@@ -40,7 +42,7 @@ OakSpeech:
 	call PlayMusic
 	call ClearScreen
 	call LoadTextBoxTilePatterns
-	call SetDefaultNames
+	call PrepareOakSpeech
 	predef InitPlayerData2
 	ld hl, wNumBoxItems
 	ld a, POTION

engine/movie/title.asm

@@ -1,15 +1,17 @@
-; copy text of fixed length NAME_LENGTH (like player name, rival name, mon names, ...)
-CopyFixedLengthText:
+CopyDebugName:
 	ld bc, NAME_LENGTH
 	jp CopyData
 
-SetDefaultNamesBeforeTitlescreen::
-	ld hl, NintenText
+PrepareTitleScreen::
+	; 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.
+	ld hl, DebugNewGamePlayerName
 	ld de, wPlayerName
-	call CopyFixedLengthText
-	ld hl, SonyText
+	call CopyDebugName
+	ld hl, DebugNewGameRivalName
 	ld de, wRivalName
-	call CopyFixedLengthText
+	call CopyDebugName
 	xor a
 	ldh [hWY], a
 	ld [wLetterPrintingDelayFlags], a
@@ -405,5 +407,8 @@ IF DEF(_BLUE)
 	db $61,$62,$63,$64,$65,$66,$67,$68,"@" ; "Blue Version"
 ENDC
 
-NintenText: db "NINTEN@"
-SonyText:   db "SONY@"
+DebugNewGamePlayerName:
+	db "NINTEN@"
+
+DebugNewGameRivalName:
+	db "SONY@"