Split map scripts, text, events from main.asm

The commit we deserve

maps/TradeCenter.asm

@@ -0,0 +1,87 @@
+TradeCenter_MapScriptHeader: ; 0x1933dc
+	; trigger count
+	db 2
+
+	; triggers
+	dw UnknownScript_0x1933e9, $0000
+	dw UnknownScript_0x1933ed, $0000
+
+	; callback count
+	db 1
+
+	; callbacks
+
+	dbw 2, UnknownScript_0x1933ee
+; 0x1933e9
+
+UnknownScript_0x1933e9: ; 0x1933e9
+	priorityjump UnknownScript_0x1933fe
+	end
+; 0x1933ed
+
+UnknownScript_0x1933ed: ; 0x1933ed
+	end
+; 0x1933ee
+
+UnknownScript_0x1933ee: ; 0x1933ee
+	special $0010
+	iffalse UnknownScript_0x1933f9
+	disappear $3
+	appear $2
+	return
+; 0x1933f9
+
+UnknownScript_0x1933f9: ; 0x1933f9
+	disappear $2
+	appear $3
+	return
+; 0x1933fe
+
+UnknownScript_0x1933fe: ; 0x1933fe
+	dotrigger $1
+	domaptrigger GROUP_POKECENTER_2F, MAP_POKECENTER_2F, $1
+	end
+; 0x193405
+
+MapTradeCenterSignpost1Script: ; 0x193405
+	special $000d
+	newloadmap $f8
+	end
+; 0x19340b
+
+UnknownScript_0x19340b: ; 0x19340b
+	loadfont
+	2writetext UnknownText_0x193412
+	closetext
+	loadmovesprites
+	end
+; 0x193412
+
+UnknownText_0x193412: ; 0x193412
+	db $0, "Your friend is", $4f
+	db "ready.", $57
+; 0x193429
+
+TradeCenter_MapEventHeader: ; 0x193429
+	; filler
+	db 0, 0
+
+	; warps
+	db 2
+	warp_def $7, $4, 2, GROUP_POKECENTER_2F, MAP_POKECENTER_2F
+	warp_def $7, $5, 2, GROUP_POKECENTER_2F, MAP_POKECENTER_2F
+
+	; xy triggers
+	db 0
+
+	; signposts
+	db 2
+	signpost 4, 4, $3, MapTradeCenterSignpost1Script
+	signpost 4, 5, $4, MapTradeCenterSignpost1Script
+
+	; people-events
+	db 2
+	person_event $1, 8, 7, $9, $0, 255, 255, $0, 0, UnknownScript_0x193499, $0000
+	person_event $1, 8, 10, $8, $0, 255, 255, $0, 0, UnknownScript_0x193499, $0001
+; 0x19345d
+