Quiet Cave

This adds Quiet Cave, with all the relevant details. Wild Pokemon still don't appear, though.

I defined it as a route, as if it were a cave, the Pokemon would jump out anywhere, regardless of grass.

constants/event_flags.asm

@@ -1483,5 +1483,9 @@
 	const EVENT_BATTLE_TOWER_OPEN_CIVILIANS
 ; Unused: next 48 events
 
+	; Nihon Trainers
+	const EVENT_BEAT_BUG_CATCHER_ELWYN
+	const EVENT_BEAT_SCHOOLBOY_PERO
+
 	const_next 2048
 DEF NUM_EVENTS EQU const_value ; 800

constants/landmark_constants.asm

@@ -122,6 +122,7 @@ DEF KANTO_LANDMARK EQU const_value
 DEF NIHON_LANDMARK EQU const_value
 	const LANDMARK_SILENT_HILLS
 	const LANDMARK_ROUTE_49
+	const LANDMARK_QUIET_CAVE
 	const LANDMARK_BLUE_FOREST
 DEF NUM_LANDMARKS EQU const_value
 

constants/map_constants.asm

@@ -518,7 +518,8 @@ ENDM
 	newgroup SILENT_HILLS ; 27
 	map_const SILENT_HILLS,								   10, 10 ; 1
 	map_const DEBUG_ROOM,								   20, 20 ; 2
-	map_const ROUTE_49,									15,  9 ; 3
+	map_const ROUTE_49,									   15,  9 ; 3
+	map_const QUIET_CAVE,								   27, 18 ; 4
 	endgroup
 	
 	newgroup BLUE_FOREST                                          ; 27

constants/trainer_constants.asm

@@ -151,6 +151,7 @@ DEF KRIS EQU __trainer_class__
 	const ALAN5
 	const CHAD4
 	const CHAD5
+	const PERO
 
 	trainerclass BIRD_KEEPER ; 18
 	const ROD
@@ -349,6 +350,7 @@ DEF KRIS EQU __trainer_class__
 	const ARNIE5
 	const WAYNE
 	const SIONED
+	const ELWYN
 	const BUG_CATCHER_DANE
 	const BUG_CATCHER_DION
 	const BUG_CATCHER_STACEY