Move lots of data tables into individual data/ files

(This is not expected to be their final location, but it makes them easier to relocate when necessary, and easier for users to edit until the whole project's file structure is finalized.)

engine/npctrade.asm

@@ -1,26 +1,10 @@
-
-; Trade struct
-TRADE_DIALOG  EQU 0
-TRADE_GIVEMON EQU 1
-TRADE_GETMON  EQU 2
-TRADE_NICK    EQU 3
-TRADE_DVS     EQU 14
-TRADE_ITEM    EQU 16
-TRADE_OT_ID   EQU 17
-TRADE_OT_NAME EQU 19
-TRADE_GENDER  EQU 30
-TRADE_PADDING EQU 31
-
 ; Trade dialogs
-TRADE_INTRO    EQU 0
-TRADE_CANCEL   EQU 1
-TRADE_WRONG    EQU 2
-TRADE_COMPLETE EQU 3
-TRADE_AFTER    EQU 4
-
-TRADE_EITHER_GENDER EQU 0
-TRADE_MALE_ONLY EQU 1
-TRADE_FEMALE_ONLY EQU 2
+	const_def
+	const TRADE_INTRO
+	const TRADE_CANCEL
+	const TRADE_WRONG
+	const TRADE_COMPLETE
+	const TRADE_AFTER
 
 NPCTrade:: ; fcba8
 	ld a, e
@@ -428,23 +412,7 @@ GetTradeMonNames: ; fce1b
 
 
 NPCTrades: ; fce58
-npctrade: MACRO
-	db \1, \2, \3, \4 ; dialog set, requested mon, offered mon, nickname
-	db \5, \6 ; dvs
-	shift
-	db \6 ; item
-	dw \7 ; OT ID
-	db \8, \9, 0 ; OT name, gender requested
-ENDM
-
-
-	npctrade 0, ABRA,       MACHOP,     "MUSCLE@@@@@", $37, $66, GOLD_BERRY,   37460, "MIKE@@@@@@@", TRADE_EITHER_GENDER
-	npctrade 0, BELLSPROUT, ONIX,       "ROCKY@@@@@@", $96, $66, BITTER_BERRY, 48926, "KYLE@@@@@@@", TRADE_EITHER_GENDER
-	npctrade 1, KRABBY,     VOLTORB,    "VOLTY@@@@@@", $98, $88, PRZCUREBERRY, 29189, "TIM@@@@@@@@", TRADE_EITHER_GENDER
-	npctrade 3, DRAGONAIR,  DODRIO,     "DORIS@@@@@@", $77, $66, SMOKE_BALL,   00283, "EMY@@@@@@@@", TRADE_FEMALE_ONLY
-	npctrade 2, HAUNTER,    XATU,       "PAUL@@@@@@@", $96, $86, MYSTERYBERRY, 15616, "CHRIS@@@@@@", TRADE_EITHER_GENDER
-	npctrade 3, CHANSEY,    AERODACTYL, "AEROY@@@@@@", $96, $66, GOLD_BERRY,   26491, "KIM@@@@@@@@", TRADE_EITHER_GENDER
-	npctrade 0, DUGTRIO,    MAGNETON,   "MAGGIE@@@@@", $96, $66, METAL_COAT,   50082, "FOREST@@@@@", TRADE_EITHER_GENDER
+INCLUDE "data/npc_trades.asm"
 ; fcf38