Fruit tree constants, more mail engine

constants/map_constants.asm

@@ -665,3 +665,36 @@ EMOTE_OBJECT EQU 7
 	const PERSONTYPE_4
 	const PERSONTYPE_5
 	const PERSONTYPE_6
+
+; fruit trees
+const_value SET 1
+	const FRUITTREE_ROUTE_29
+	const FRUITTREE_ROUTE_30_1
+	const FRUITTREE_ROUTE_38
+	const FRUITTREE_ROUTE_46_1
+	const FRUITTREE_ROUTE_30_2
+	const FRUITTREE_ROUTE_33
+	const FRUITTREE_ROUTE_31
+	const FRUITTREE_ROUTE_43
+	const FRUITTREE_VIOLET_CITY
+	const FRUITTREE_ROUTE_46_2
+	const FRUITTREE_ROUTE_35
+	const FRUITTREE_ROUTE_45
+	const FRUITTREE_ROUTE_36
+	const FRUITTREE_ROUTE_26
+	const FRUITTREE_ROUTE_39
+	const FRUITTREE_ROUTE_44
+	const FRUITTREE_ROUTE_37_1
+	const FRUITTREE_ROUTE_37_2
+	const FRUITTREE_ROUTE_37_3
+	const FRUITTREE_AZALEA_TOWN
+	const FRUITTREE_ROUTE_42_1
+	const FRUITTREE_ROUTE_42_2
+	const FRUITTREE_ROUTE_42_3
+	const FRUITTREE_ROUTE_11
+	const FRUITTREE_ROUTE_2
+	const FRUITTREE_ROUTE_1
+	const FRUITTREE_ROUTE_8
+	const FRUITTREE_PEWTER_CITY_1
+	const FRUITTREE_PEWTER_CITY_2
+	const FRUITTREE_FUCHSIA_CITY

constants/misc_constants.asm

@@ -35,6 +35,7 @@ NUM_BOXES    EQU 14
 ; mail
 MAIL_STRUCT_LENGTH EQU $2f
 MAILBOX_CAPACITY   EQU 10
+MAIL_MSG_LENGTH    EQU $20
 
 ; hall of fame
 HOF_MON_LENGTH = 1 + 2 + 2 + 1 + (PKMN_NAME_LENGTH +- 1) ; species, id, dvs, level, nick