Warp to new Johto town from Mt Silver Cave map, add item to map

How to set up a warp, continued, new Johto Town. Plus, how to add an item to the overworld visibly.

data/hide_show_data.asm

@@ -48,15 +48,15 @@ MapHSPointers:
 	dw MapHS28 ;oak'slab
 	dw MapHSXX
 	dw MapHSMart;viridian pokemart
-	dw MapHSXX
-	dw MapHSXX
-	dw MapHS2D
-	dw MapHSXX
-	dw MapHSXX
-	dw MapHSXX
-	dw MapHSXX
-	dw MapHSXX
-	dw MapHS33
+	dw MapHSXX ;school
+	dw MapHSXX ;vhouse
+	dw MapHS2D ;gym
+	dw MapHSXX ;diglett
+	dw MapHSXX ;r2h
+	dw MapHSXX ;r2g
+	dw MapHSXX ; V Entrance
+	dw MapHSXX ;Viridian Forest
+	dw MapHS33 ; Museum
 	dw MapHS34
 	dw MapHSXX
 	dw MapHSXX
@@ -108,9 +108,9 @@ MapHSPointers:
 	dw MapHSXX
 	dw MapHSXX
 	dw MapHS66
-	dw MapHS67
-	dw MapHS68
-	dw MapHSXX
+	dw MapHS67 ;SS Anne
+	dw MapHS68 ;SS Anne
+	dw MapHSsilver ;Mt Silver Hopefully
 	dw MapHSXX
 	dw MapHSXX
 	dw MapHS6C
@@ -437,6 +437,8 @@ MapHS68:
 	db SS_ANNE_10, $09, Show
 	db SS_ANNE_10, $0A, Show
 	db SS_ANNE_10, $0B, Show
+MapHSsilver:
+  db MT_SILVER_CAVE, $03, Show
 MapHSC6:
 	db VICTORY_ROAD_3, $05, Show
 	db VICTORY_ROAD_3, $06, Show

data/mapObjects/mtsilvercave.asm

@@ -2,15 +2,15 @@ MtSilverCaveObject:
 	db $19 ; border block
 
 	db $2 ; warps
-	db $5, $5, $0, MT_SILVER
-	db $1f, $25, $0, MT_SILVER
+	db $4, $4, $0, JOHTO_FALLS ;warp from here loc, then location to. The location you end up on the other side is determined by that map's WARP TO, see below for example.
+	db $1f, $25, $0, MT_SILVER ;warp from?
 
 	db $0 ; signs
 
-	db $2 ; objects
+	db $3 ; objects
 	object SPRITE_BUG_CATCHER,$1e, $1b, STAY, RIGHT, $1, OPP_BUG_CATCHER, $8
 	object SPRITE_RED, $21, $3, STAY, DOWN, $2, OPP_RANDTRAINER, $1
-  ;object SPRITE_BALL, $1e, $1c, STAY, NONE, $3, POTION not totally sure how items work
+  object SPRITE_BALL, $1e, $1c, STAY, NONE, $3, RARE_CANDY ;for items you also have to mess with hide/show sprite and hidden items list.
 	; warp-to
-	EVENT_DISP DIGLETTS_CAVE_WIDTH, $5, $5 ; silv
+	EVENT_DISP DIGLETTS_CAVE_WIDTH, $5, $5 ; Warps FROM Johto or anywhere else calling our first warp point will end up here in the cave.
 	EVENT_DISP DIGLETTS_CAVE_WIDTH, $1f, $25 ; silv

scripts/silvercave.asm

@@ -16,6 +16,7 @@ SilverCaveScriptPointers:
 SilverCaveTextPointers:
 	dw SilverCaveText1
 	dw SilverCaveText2
+	dw PickUpItemText
 
 SilverCaveTrainerHeaders:
 SilverCaveTrainerHeader1: