Sevii Region groundwork

This adds the baseline infrastructure to account for the Sevii Islands, while also fixing a couple of bugs. Zeta, please read the commit carefully!

Only real issue I noticed was that scrolling on the town map is infinite in all three new regions, implying there's something in `pokegear.asm` I haven't accounted for.

I've also ret'd the ezchat order and gen1 orders out of existence to reduce the sheer amount of 8-bit warnings. This abolishes gen1 compatibility (though this was already a bit fucked) in exchange for actually being able to debug things in a reasonable timeframe.

data/pokemon/ezchat_order.asm

@@ -2,94 +2,4 @@
 ; Notably, Rhydon is missing (it should be before Rhyhorn).
 
 EZChat_SortedPokemon:
-	dw .a
-	dw .i
-	dw .u
-	dw .e
-	dw .o
-	dw .ka_ga
-	dw .ki_gi
-	dw .ku_gu
-	dw .ke_ge
-	dw .ko_go
-	dw .sa_za
-	dw .shi_ji
-	dw .su_zu
-	dw .se_ze
-	dw .so_zo
-	dw .ta_da
-	dw .chi_dhi
-	dw .tsu_du
-	dw .te_de
-	dw .to_do
-	dw .na
-	dw .ni
-	dw .nu
-	dw .ne
-	dw .no
-	dw .ha_ba_pa
-	dw .hi_bi_pi
-	dw .fu_bu_pu
-	dw .he_be_pe
-	dw .ho_bo_po
-	dw .ma
-	dw .mi
-	dw .mu
-	dw .me
-	dw .mo
-	dw .ya
-	dw .yu
-	dw .yo
-	dw .ra
-	dw .ri
-	dw .ru
-	dw .re
-	dw .ro
-	dw .wa
-	dw .end
-
-.a:        db EKANS, ARBOK, SEAKING, ARIADOS, CROCONAW, UNOWN, -1
-.i:        db EEVEE, GEODUDE, SPINARAK, PILOSWINE, ONIX, -1
-.u:        db ARCANINE, SUDOWOODO, WEEPINBELL, VICTREEBEL, WOOPER, SWINUB, -1
-.e:        db SKARMORY, AIPOM, ESPEON, HITMONCHAN, ELEKID, ELECTABUZZ, ENTEI, -1
-.o:        db FERALIGATR, FURRET, OCTILLERY, PRIMEAPE, SENTRET, STANTLER, SPEAROW, FEAROW, OMASTAR, OMANYTE, -1
-.ka_ga:    db GROWLITHE, MACHAMP, DRAGONITE, PINSIR, SNORLAX, KABUTO, KABUTOPS, HITMONTOP, WARTORTLE, BLASTOISE, FARFETCH_D, CUBONE, MAROWAK, KANGASKHAN, -1
-.ki_gi:    db SUNFLORA, CATERPIE, GYARADOS, RAPIDASH, NINETALES, GIRAFARIG, BELLOSSOM, KINGDRA, KINGLER, -1
-.ku_gu:    db GLOOM, PINECO, GLIGAR, KRABBY, GRANBULL, CROBAT, -1
-.ke_ge:    db ABRA, GENGAR, TAUROS, -1
-.ko_go:    db MAGIKARP, MAGNEMITE, GASTLY, HAUNTER, MACHOKE, KAKUNA, PSYDUCK, PHANPY, RATTATA, GOLDUCK, GOLBAT, GOLEM, GRAVELER, VENONAT, -1
-.sa_za:    db RHYHORN, PUPITAR, CORSOLA, HITMONLEE, ZAPDOS, JOLTEON, SANDSHREW, SANDSLASH, -1 ; RHYDON should lead this list
-.shi_ji:   db SEADRA, SHELLDER, VAPOREON, DEWGONG, -1
-.su_zu:    db SUICUNE, STARMIE, SCYTHER, ZUBAT, BEEDRILL, HYPNO, DROWZEE, -1
-.se_ze:    db SQUIRTLE, CELEBI, -1
-.so_zo:    db WOBBUFFET, -1
-.ta_da:    db DUGTRIO, HORSEA, EXEGGCUTE, -1
-.chi_dhi:  db CHIKORITA, CHINCHOU, -1
-.tsu_du:   db SHUCKLE, -1
-.te_de:    db DIGLETT, REMORAID, DELIBIRD, HOUNDOUR, AMPHAROS, -1
-.to_do:    db DODUO, DODRIO, SMEARGLE, KOFFING, TENTACRUEL, TOGETIC, TOGEPI, GOLDEEN, METAPOD, DONPHAN, -1
-.na:       db ODDISH, EXEGGUTOR, -1
-.ni:       db NIDOKING, NIDOQUEEN, NIDORAN_M, NIDORAN_F, NIDORINA, NIDORINO, MEOWTH, SNEASEL, POLIWHIRL, POLITOED, POLIWRATH, POLIWAG, -1
-.nu:       db QUAGSIRE, -1
-.ne:       db NATU, XATU, -1
-.no:       db DUNSPARCE, -1
-.ha_ba_pa: db SEEL, STEELIX, TYPHLOSION, DRAGONAIR, BUTTERFREE, SCIZOR, HOPPIP, BLISSEY, PARAS, PARASECT, QWILFISH, MR__MIME, TYROGUE, CLOYSTER, TYRANITAR, -1
-.hi_bi_pi: db CLEFFA, WEEDLE, PIKACHU, CLEFABLE, PIDGEOT, PIDGEOTTO, PICHU, CLEFAIRY, CHARMANDER, STARYU, CYNDAQUIL, SUNKERN, TEDDIURSA, VOLTORB, -1
-.fu_bu_pu: db MOLTRES, FLAREON, ALAKAZAM, MAGMAR, FORRETRESS, WIGGLYTUFF, IVYSAUR, BULBASAUR, VENUSAUR, AERODACTYL, MAGBY, IGGLYBUFF, UMBREON, ARTICUNO, JIGGLYPUFF, SNUBBULL, -1
-.he_be_pe: db BAYLEEF, GRIMER, MUK, HERACROSS, HOUNDOOM, PERSIAN, LICKITUNG, -1
-.ho_bo_po: db HO_OH, HOOTHOOT, PIDGEY, PONYTA, SKIPLOOM, PORYGON, PORYGON2, -1
-.ma:       db MAGCARGO, SLUGMA, QUILAVA, BELLSPROUT, WEEZING, MARILL, AZUMARILL, ELECTRODE, MANKEY, MANTINE, -1
-.mi:       db DRATINI, MEW, MEWTWO, MILTANK, -1
-.mu:       db MISDREAVUS, SMOOCHUM, -1
-.me:       db MEGANIUM, DITTO, TENTACOOL, MAREEP, -1
-.mo:       db FLAAFFY, VENOMOTH, TANGELA, -1
-.ya:       db SLOWKING, SLOWBRO, SLOWPOKE, MURKROW, YANMA, -1
-.yu:       db KADABRA, -1
-.yo:       db LARVITAR, NOCTOWL, -1
-.ra:       db RAIKOU, RAICHU, CHANSEY, RATICATE, LAPRAS, VILEPLUME, LANTURN, -1
-.ri:       db CHARMELEON, CHARIZARD, URSARING, -1
-.ru:       db JYNX, LUGIA, -1
-.re:       db MAGNETON, LEDIAN, LEDYBA, -1
-.ro:       db VULPIX, -1
-.wa:       db JUMPLUFF, TOTODILE, MACHOP ;, -1
-.end:      db -1
+	ret ; removed for space among other things