Revamp Pokemon Mansion B2F

This was hell to do. There is still one bug in there, and that's the item pickups don't work for some reason. I don't know how these work honestly so if anyone wants to sort that go ahead.

Anyway, some stuff on the map;
- Currently, a warp from B1F leads there, which is intentionally non-returnable. The player walks through the whole map to get to the warp panel. A walk of humanity's shame, if you will. A warp for where the player is meant to go will be necessary later.
- Lore from Japanese media, particularly the first movie's interpretation of Mewtwo, is included. This is based on context clues on its canonicity from LGPE and other bits.
- A clue on how to get the Old Sea Chart is not-so-subtly included.

The MissingNo. event is unfinished, I intend for Martha to deal with that. The text intentionally lacks a "done" bit to force an unpredictable error; I believe this is inconsequential gameplay-wise and should make for a good opening quote when fighting it.

Oh, and Faraway Island has Mankey, Butterfree, and Primeape as find-able Pokemon now. This should be expanded upon later.

data/maps/hide_show_data.asm

@@ -119,7 +119,7 @@ MapHSPointers:
 	dw NoHS
 	dw NoHS
 	dw FarawayIslandInsideHS
-	dw NoHS
+	dw PokemonMansionB2FHS
 	dw NoHS
 	dw NoHS
 	dw NoHS
@@ -571,8 +571,11 @@ SeafoamIslandsB4FHS:
 	db SEAFOAM_ISLANDS_B4F, $03, SHOW
 VermilionDockHS: ; unsure if necessary
 	db VERMILION_DOCK, $01, SHOW
-	;db $FF, $01, SHOW ; end
+	;db $FF, $01, SHOW 
 FarawayIslandInsideHS:
 	db FARAWAY_ISLAND_INSIDE, $01, HIDE ; if mew is fucking up this is why
+PokemonMansionB2FHS:
+	db POKEMON_MANSION_B2F, $03, SHOW
+	db POKEMON_MANSION_B2F, $04, SHOW ; end
 
 	assert_table_length NUM_HS_OBJECTS + 1

data/maps/objects/PokemonMansionB1F.asm

@@ -1,8 +1,9 @@
 PokemonMansionB1F_Object:
-	db $1 ; border block
+	db $01 ; border block
 
 	def_warp_events
 	warp_event 23, 22, POKEMON_MANSION_1F, 6
+	warp_event  2,  1, POKEMON_MANSION_B2F, 1 ; temp for debugging purposes...unless?
 
 	def_bg_events
 

data/maps/objects/PokemonMansionB2F.asm

@@ -1,10 +1,34 @@
 PokemonMansionB2F_Object:
-	db $01 ; border block
+	db $0D ; border block
 
 	def_warp_events
+	warp_event 26, 22, CINNABAR_ISLAND, 1 ; this should not be accessible, only something the player arrives at.
+	warp_event 27,  2, CINNABAR_ISLAND, 6
 
 	def_bg_events
+	bg_event 23,  0, 14  ; photo
+	bg_event 18,  2, 15 ; starter pod
+	bg_event 14,  2, 16 ; starter pod
+	bg_event 10,  2, 17 ; starter pod
+	bg_event  6,  2, 18 ; amber's pod
+	bg_event  1,  2, 19 ; mewtwo's pod
+	bg_event 12,  6, 20 ; computer 1
+	bg_event 14,  6, 21 ; computer 2
+	bg_event 16,  6, 22 ; computer 3, missingno
 
 	def_object_events
+	object_event  7,  8, SPRITE_POKEDEX, STAY, NONE, 1 ; Book 1
+	object_event 26,  6, SPRITE_POKEDEX, STAY, NONE, 2 ; Book 2
+	object_event  8,  8, SPRITE_POKE_BALL, STAY, NONE, 3, TM_PSYCHIC_M
+	object_event 25,  6, SPRITE_POKE_BALL, STAY, NONE, 4, RARE_CANDY
+	object_event  6, 17, SPRITE_BOULDER, STAY, BOULDER_MOVEMENT_BYTE_2, 5 ; person
+	object_event  9, 18, SPRITE_BOULDER, STAY, BOULDER_MOVEMENT_BYTE_2, 6 ; person
+	object_event  5, 22, SPRITE_BOULDER, STAY, BOULDER_MOVEMENT_BYTE_2, 7 ; person
+	object_event 17, 22, SPRITE_BOULDER, STAY, BOULDER_MOVEMENT_BYTE_2, 8 ; person
+	object_event 11, 21, SPRITE_BOULDER, STAY, BOULDER_MOVEMENT_BYTE_2, 9 ; person
+	object_event  8, 19, SPRITE_BOULDER, STAY, BOULDER_MOVEMENT_BYTE_2, 10 ; person
+	object_event  5, 17, SPRITE_BOULDER, STAY, BOULDER_MOVEMENT_BYTE_2, 11 ; person
+	object_event  7, 18, SPRITE_BOULDER, STAY, BOULDER_MOVEMENT_BYTE_2, 12 ; person
+	object_event 12, 22, SPRITE_BOULDER, STAY, BOULDER_MOVEMENT_BYTE_2, 13 ; person
 
 	def_warps_to POKEMON_MANSION_B2F

data/maps/songs.asm

@@ -116,7 +116,7 @@ MapSongBanks::
 	db MUSIC_INDIGO_PLATEAU, BANK(Music_IndigoPlateau) ; LANCES_ROOM
 	db MUSIC_DUNGEON2, BANK(Music_Dungeon2) ; UNUSED_MAP_72 / FARAWAY ISLAND INSIDE
 	db MUSIC_DUNGEON2, BANK(Music_Dungeon2) ; UNUSED_MAP_73 / FARAWAY ISLAND OUTSIDE 
-	db MUSIC_SS_ANNE, BANK(Music_SSAnne) ; UNUSED_MAP_74
+	db MUSIC_CINNABAR_MANSION, BANK(Music_CinnabarMansion) ; UNUSED_MAP_74 / POKEMON MANSION B2F
 	db MUSIC_SS_ANNE, BANK(Music_SSAnne) ; UNUSED_MAP_75
 	db MUSIC_PALLET_TOWN, BANK(Music_PalletTown) ; HALL_OF_FAME
 	db MUSIC_ROUTES1, BANK(Music_Routes1) ; UNDERGROUND_PATH_NORTH_SOUTH