RGBDS syntax updates (#905)

New MACRO and DEF syntax

engine/games/card_flip.asm

@@ -1,7 +1,7 @@
-CARDFLIP_LIGHT_OFF EQU "♂" ; $ef
-CARDFLIP_LIGHT_ON  EQU "♀" ; $f5
+DEF CARDFLIP_LIGHT_OFF EQU "♂" ; $ef
+DEF CARDFLIP_LIGHT_ON  EQU "♀" ; $f5
 
-CARDFLIP_DECK_SIZE EQUS "(wDeckEnd - wDeck)"
+DEF CARDFLIP_DECK_SIZE EQUS "(wDeckEnd - wDeck)"
 	assert wDiscardPileEnd - wDiscardPile == wDeckEnd - wDeck
 
 MemoryGameGFX:
@@ -1337,14 +1337,14 @@ CardFlip_UpdateCursorOAM:
 	ret
 
 .OAMData:
-cardflip_cursor: MACRO
-if _NARG >= 5
-	dbpixel \1, \2, \3, \4
-	dw \5
-else
-	dbpixel \1, \2
-	dw \3
-endc
+MACRO cardflip_cursor
+	if _NARG >= 5
+		dbpixel \1, \2, \3, \4
+		dw \5
+	else
+		dbpixel \1, \2
+		dw \3
+	endc
 ENDM
 
 	cardflip_cursor 11,  2,       .Impossible

engine/games/slot_machine.asm

@@ -6,26 +6,26 @@
 	const SLOTS_PIKACHU  ; $0c
 	const SLOTS_SQUIRTLE ; $10
 	const SLOTS_STARYU   ; $14
-NUM_SLOT_REELS EQU const_value / 4 ; 6
-SLOTS_NO_MATCH EQU -1
+DEF NUM_SLOT_REELS EQU const_value / 4 ; 6
+DEF SLOTS_NO_MATCH EQU -1
 
 ; wSlotBias values
-SLOTS_NO_BIAS  EQU -1
+DEF SLOTS_NO_BIAS EQU -1
 
-REEL_SIZE EQU 15
+DEF REEL_SIZE EQU 15
 
 ; Constants for slot_reel offsets (see macros/wram.asm)
-REEL_ACTION        EQUS "(wReel1ReelAction - wReel1)"
-REEL_TILEMAP_ADDR  EQUS "(wReel1TilemapAddr - wReel1)"
-REEL_POSITION      EQUS "(wReel1Position - wReel1)"
-REEL_SPIN_DISTANCE EQUS "(wReel1SpinDistance - wReel1)"
-REEL_SPIN_RATE     EQUS "(wReel1SpinRate - wReel1)"
-REEL_OAM_ADDR      EQUS "(wReel1OAMAddr - wReel1)"
-REEL_X_COORD       EQUS "(wReel1XCoord - wReel1)"
-REEL_MANIP_COUNTER EQUS "(wReel1ManipCounter - wReel1)"
-REEL_MANIP_DELAY   EQUS "(wReel1ManipDelay - wReel1)"
-REEL_FIELD_0B      EQUS "(wReel1Field0b - wReel1)"
-REEL_STOP_DELAY    EQUS "(wReel1StopDelay - wReel1)"
+DEF REEL_ACTION        EQUS "(wReel1ReelAction - wReel1)"
+DEF REEL_TILEMAP_ADDR  EQUS "(wReel1TilemapAddr - wReel1)"
+DEF REEL_POSITION      EQUS "(wReel1Position - wReel1)"
+DEF REEL_SPIN_DISTANCE EQUS "(wReel1SpinDistance - wReel1)"
+DEF REEL_SPIN_RATE     EQUS "(wReel1SpinRate - wReel1)"
+DEF REEL_OAM_ADDR      EQUS "(wReel1OAMAddr - wReel1)"
+DEF REEL_X_COORD       EQUS "(wReel1XCoord - wReel1)"
+DEF REEL_MANIP_COUNTER EQUS "(wReel1ManipCounter - wReel1)"
+DEF REEL_MANIP_DELAY   EQUS "(wReel1ManipDelay - wReel1)"
+DEF REEL_FIELD_0B      EQUS "(wReel1Field0b - wReel1)"
+DEF REEL_STOP_DELAY    EQUS "(wReel1StopDelay - wReel1)"
 
 ; SlotsJumptable constants
 	const_def
@@ -48,7 +48,7 @@ REEL_STOP_DELAY    EQUS "(wReel1StopDelay - wReel1)"
 	const SLOTS_PAYOUT_ANIM
 	const SLOTS_RESTART_OF_QUIT
 	const SLOTS_QUIT
-SLOTS_END_LOOP_F EQU 7
+DEF SLOTS_END_LOOP_F EQU 7
 
 ; ReelActionJumptable constants
 	const_def

engine/games/unown_puzzle.asm

@@ -1,7 +1,7 @@
-PUZZLE_BORDER EQU $ee
-PUZZLE_VOID   EQU $ef
+DEF PUZZLE_BORDER EQU $ee
+DEF PUZZLE_VOID   EQU $ef
 
-puzcoord EQUS "* 6 +"
+DEF puzcoord EQUS "* 6 +"
 
 _UnownPuzzle:
 	ldh a, [hInMenu]
@@ -112,11 +112,11 @@ InitUnownPuzzlePiecePositions:
 	ret
 
 .PuzzlePieceInitialPositions:
-initpuzcoord: MACRO
-rept _NARG / 2
-	db \1 puzcoord \2
-	shift 2
-endr
+MACRO initpuzcoord
+	rept _NARG / 2
+		db \1 puzcoord \2
+		shift 2
+	endr
 ENDM
 	initpuzcoord 0,0, 0,1, 0,2, 0,3, 0,4, 0,5
 	initpuzcoord 1,0,                     1,5
@@ -568,7 +568,7 @@ RedrawUnownPuzzlePieces:
 
 UnownPuzzleCoordData:
 
-puzzle_coords: MACRO
+MACRO puzzle_coords
 	dbpixel \1, \2, \3, \4
 	dwcoord \5, \6
 	db \7, \8