gen1recomp/docs/gold-walkthrough/asm-walk/section-29-routes-22-28.md

Section 29 - Routes 22-28

Source: ../section-29-routes-22-28.txt (the FAQ numbers this chapter "35 > Routes 22-28") Maps covered: MAP_PALLET_TOWN, MAP_OAKS_LAB, MAP_VIRIDIAN_CITY, MAP_ROUTE_22, MAP_VICTORY_ROAD_GATE, MAP_ROUTE_28, MAP_ROUTE_28_STEEL_WING_HOUSE, and the east edge of MAP_SILVER_CAVE_OUTSIDE (+ MAP_SILVER_CAVE_POKECENTER_1F). Badges / key milestones in this section: no badge. The milestone is EVENT_OPENED_MT_SILVER, set by Prof. Oak once VAR_BADGES == NUM_BADGES (16). Items: TM42 Dream Eater, TM47 Steel Wing, hidden Rare Candy.

Two structural facts the walkthrough hides, both verified against the block data and both load-bearing for a bot:

1. Oak's line is not flavour - it is the gate. EVENT_OPENED_MT_SILVER removes the black belt standing at VICTORY_ROAD_GATE (7,5). That NPC occupies the only tile joining the gate's central corridor to its western vestibule, i.e. to the two ROUTE_28 warps. Until Oak sets the flag, Route 28 and Mt. Silver are physically unreachable. See section 3.
2. object_event's trailing EVENT_* HIDES the object when the flag is SET. CheckObjectFlag (engine/overworld/map_objects_2.asm:32-61) jumps to .masked when EventFlagAction/CHECK_FLAG returns non-zero. The macro comment in macros/scripts/maps.asm:132 ("event flag: an EVENT_* constant, or -1 to always appear") does not state the polarity and is easy to read backwards. The port already has this right (src/world/gen2/Events.lua:40-44).

Coordinates below are walk cells (the raw numbers in the warp_event / bg_event / object_event rows), origin top-left, x east, y south.

---

1. Route order

#	Map constant	asm file	Enter via	Leaves via	Why (walkthrough beat)
0	MAP_PALLET_TOWN	maps/PalletTown.asm	Fly, SPAWN_PALLET = (5,6) (data/maps/spawn_points.asm:14)	warp 3 at (12,11) -> OAKS_LAB warp 1	"fly back to Pallet Town"
1	MAP_OAKS_LAB	maps/OaksLab.asm	warp 1 at (4,11) (warp 2 at (5,11) is the twin tile)	same warps back to PALLET_TOWN warp 3	talk to Oak at (4,2); with 16 badges this runs .OpenMtSilver and sets EVENT_OPENED_MT_SILVER
2	MAP_VIRIDIAN_CITY	maps/ViridianCity.asm	Fly, SPAWN_VIRIDIAN = (23,26) (data/maps/spawn_points.asm:15), which is the Pokecenter warp tile	west map edge, cells y=14..17 at x=0	"fly back to Viridian City, and then head west to Route 22"
2a	MAP_VIRIDIAN_CITY (Cut pocket)	same	Cut the tree at (8,22), approached from (9,22) facing LEFT	the same tile back east	the TM42 Dream Eater fisher at (6,23). The FAQ files this under "Items on Route 22"; it is not on Route 22
3	MAP_ROUTE_22	maps/Route22.asm	east map edge at x=39, y=6..9 (connection east, ViridianCity, VIRIDIAN_CITY, -4)	warp 1 at (13,5) -> VICTORY_ROAD_GATE warp 1	"keep heading north, west, then north"
4	MAP_VICTORY_ROAD_GATE	maps/VictoryRoadGate.asm	warp 1 at (17,7) (warp 2 at (18,7) is the twin)	warp 7 at (1,7) / warp 8 at (2,7) -> ROUTE_28 warp 2	"heading west instead of north"
5	MAP_ROUTE_28 (main body)	maps/Route28.asm	warp 2 at (33,5)	west map edge at x=0, y=12..13 (connection west, SilverCaveOutside, SILVER_CAVE_OUTSIDE, -9)	"head west towards Mount Silver"; the Route 28 sign is read from (30,5)
6	MAP_SILVER_CAVE_OUTSIDE	maps/SilverCaveOutside.asm	east map edge at x=39, y=30..31	warp 1 at (23,19) -> SILVER_CAVE_POKECENTER_1F warp 1	"There's also a Pokémon Center here". Sets ENGINE_FLYPOINT_SILVER_CAVE on entry
7	MAP_SILVER_CAVE_POKECENTER_1F	maps/SilverCavePokecenter1F.asm	warp 1 at (3,7) (twin at (4,7))	same	heal; the last Pokecenter before Mt. Silver
8	MAP_SILVER_CAVE_OUTSIDE (east shelf)	same	Cut (31,24) then Cut (34,23)	east map edge at x=39, y=21	"cut the trees east"
9	MAP_ROUTE_28 (isolated west strip)	maps/Route28.asm	west map edge at x=0, y=3	warp 1 at (7,3) -> ROUTE_28_STEEL_WING_HOUSE warp 1	the strip that holds the Steel Wing house door and the hidden Rare Candy
10	MAP_ROUTE_28_STEEL_WING_HOUSE	maps/Route28SteelWingHouse.asm	warp 1 at (2,7) (twin at (3,7))	same	Celebrity at (2,3) gives TM47 Steel Wing
11	MAP_SILVER_CAVE_OUTSIDE warp 2 at (18,11) -> SILVER_CAVE_ROOM_1	maps/SilverCaveRoom1.asm	-	-	next section (Mt. Silver / Red). Stop here.

The FAQ's chapter title says "Routes 22-28" but the prose never enters Route 23, 24, 25, 26 or 27. Routes 26/27 are section 16's, Route 23 is section 17/18's.

2. Maps

MAP_PALLET_TOWN

• Script: maps/PalletTown.asm (included from data/maps/scripts.asm:171)
• Blocks: maps/PalletTown.blk (data/maps/blocks.asm:88)
• Header: data/maps/maps.asm:312 map PalletTown, TILESET_KANTO, TOWN, LANDMARK_PALLET_TOWN, MUSIC_PALLET_TOWN, FALSE, PALETTE_AUTO, FISHGROUP_OCEAN
• Attributes: data/maps/attributes.asm:271 map_attributes PalletTown, PALLET_TOWN, $0f
• Dimensions: constants/map_constants.asm:288 map_const PALLET_TOWN, 10, 9 -> 10x9 blocks = 20x18 cells. Group PALLET (13), map id 2.
• Connections: connection north, Route1, ROUTE_1, 0; connection south, Route21, ROUTE_21, 0
• Callbacks: callback MAPCALLBACK_NEWMAP, PalletTownFlypointCallback (sym 4e:46ac) -> setflag ENGINE_FLYPOINT_PALLET

Warps (def_warp_events, maps/PalletTown.asm:73-76)

idx	x	y	destination map	dest warp
1	5	5	REDS_HOUSE_1F	1
2	13	5	BLUES_HOUSE	1
3	12	11	OAKS_LAB	1

Coord events - def_coord_events is empty.

BG events (def_bg_events, maps/PalletTown.asm:80-84)

x	y	type	script/item
7	9	BGEVENT_READ	PalletTownSign (sym 4e:46b6)
3	5	BGEVENT_READ	RedsHouseSign
13	13	BGEVENT_READ	OaksLabSign (sym 4e:46bc)
11	5	BGEVENT_READ	BluesHouseSign

Object events (def_object_events, maps/PalletTown.asm:86-88)

const	sprite	x	y	movement	type	script label	event flag
PALLETTOWN_TEACHER	SPRITE_TEACHER	3	8	SPRITEMOVEDATA_WANDER (r 2,2)	OBJECTTYPE_SCRIPT	PalletTownTeacherScript	-1
PALLETTOWN_FISHER	SPRITE_FISHER	12	14	SPRITEMOVEDATA_WALK_LEFT_RIGHT (r 2,0)	OBJECTTYPE_SCRIPT	PalletTownFisherScript	-1

Route from the Fly landing to the lab door (BFS over PalletTown.blk + data/tilesets/kanto_collision.asm): (5,6) -> (9,6) -> (9,12) -> (12,12) -> (12,11). No ledges, no field moves.

---

MAP_OAKS_LAB

• Script: maps/OaksLab.asm (data/maps/scripts.asm:341)
• Blocks: maps/OaksLab.blk (data/maps/blocks.asm:892)
• Header: data/maps/maps.asm:316 map OaksLab, TILESET_LAB, INDOOR, LANDMARK_PALLET_TOWN, MUSIC_POKEMON_TALK, FALSE, PALETTE_DAY, FISHGROUP_SHORE
• Attributes: data/maps/attributes.asm:579 map_attributes OaksLab, OAKS_LAB, $00, no connections
• Dimensions: constants/map_constants.asm:292 map_const OAKS_LAB, 5, 6 -> 5x6 blocks = 10x12 cells. Group PALLET (13), map id 6.
• Callbacks / scene scripts: both empty (OaksLabNoopScene is marked unreferenced).

Warps (maps/OaksLab.asm:260-262)

idx	x	y	destination map	dest warp
1	4	11	PALLET_TOWN	3
2	5	11	PALLET_TOWN	3

Coord events - none.

BG events (maps/OaksLab.asm:266-282)

x	y	type	script/item
6,7,8,9	1	BGEVENT_READ	OaksLabBookshelf -> jumpstd DifficultBookshelfScript
0,1,2,3	7	BGEVENT_READ	OaksLabBookshelf
6,7,8,9	7	BGEVENT_READ	OaksLabBookshelf
4	0	BGEVENT_READ	OaksLabPoster1
5	0	BGEVENT_READ	OaksLabPoster2
9	3	BGEVENT_READ	OaksLabTrashcan
0	1	BGEVENT_READ	OaksLabPC

Object events (maps/OaksLab.asm:284-288)

const	sprite	x	y	movement	type	script label	event flag
OAKSLAB_OAK	SPRITE_OAK	4	2	SPRITEMOVEDATA_STANDING_DOWN	OBJECTTYPE_SCRIPT	Oak (sym 59:58c3)	-1
OAKSLAB_SCIENTIST1	SPRITE_SCIENTIST	1	8	WALK_LEFT_RIGHT (r 1,0), PAL_NPC_BLUE	OBJECTTYPE_SCRIPT	OaksAssistant1Script (sym 59:590a)	-1
OAKSLAB_SCIENTIST2	SPRITE_SCIENTIST	8	9	WALK_UP_DOWN (r 0,1), PAL_NPC_BLUE	OBJECTTYPE_SCRIPT	OaksAssistant2Script	-1
OAKSLAB_SCIENTIST3	SPRITE_SCIENTIST	1	4	WANDER (r 1,1), PAL_NPC_BLUE	OBJECTTYPE_SCRIPT	OaksAssistant3Script	-1

Oak stands at (4,2); the player talks to him from (4,3) facing UP. Cell (4,3) is COLL_FLOOR in data/tilesets/lab_collision.asm, and (4,11)/(5,11) are the WARP_CARPET_DOWN pair, so the approach is a straight walk up the middle of the room.

Scripts of interest

Oak (maps/OaksLab.asm:15-54, sym 59:58c3) - the only script in this section that writes a story flag:

faceplayer / opentext
checkevent EVENT_OPENED_MT_SILVER   ; already done -> .CheckPokedex
iftrue .CheckPokedex
checkevent EVENT_TALKED_TO_OAK_IN_KANTO
iftrue .CheckBadges
writetext OakWelcomeKantoText / promptbutton
setevent EVENT_TALKED_TO_OAK_IN_KANTO
.CheckBadges:
readvar VAR_BADGES
ifequal NUM_BADGES, .OpenMtSilver     ; 16
ifequal NUM_JOHTO_BADGES, .Complain   ; 8 -> "you're not collecting KANTO BADGES"
sjump .AhGood                         ; 9..15 -> "come see me when you get them all"
.OpenMtSilver:
writetext OakOpenMtSilverText / promptbutton
setevent EVENT_OPENED_MT_SILVER
sjump .CheckPokedex
.CheckPokedex:
writetext OakLabDexCheckText / waitbutton
special ProfOaksPCBoot
writetext OakLabGoodbyeText / waitbutton / closetext / end

Bot-relevant: the branch is ifequal, not ifgreater, and VAR_BADGES is the popcount of both badge bytes (engine/overworld/variables.asm -> CountSetBits over wJohtoBadges + wKantoBadges; the port mirrors this at src/world/gen2/World.lua:1240-1245). So the flag is only set on a visit with exactly 16 badges; 9-15 badges gives .AhGood and no flag. Every arm falls through to special ProfOaksPCBoot, which prints the Pokedex rating - budget several textbox advances for it.

Flags and events

constant	defined in	read/written by	meaning for a bot
EVENT_OPENED_MT_SILVER	constants/event_flags.asm:1265	set by Oak; read by Oak and by the VICTORYROADGATE_BLACK_BELT1 object row	the section's gate. While clear, the black belt at VICTORY_ROAD_GATE (7,5) exists and blocks the ROUTE_28 warps
EVENT_TALKED_TO_OAK_IN_KANTO	constants/event_flags.asm:224	set/read by Oak	first-visit greeting only, no gameplay effect

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MAP_VIRIDIAN_CITY

• Script: maps/ViridianCity.asm (data/maps/scripts.asm:168)
• Blocks: maps/ViridianCity.blk (data/maps/blocks.asm:235)
• Header: data/maps/maps.asm:457 map ViridianCity, TILESET_KANTO, TOWN, LANDMARK_VIRIDIAN_CITY, MUSIC_VIRIDIAN_CITY, FALSE, PALETTE_AUTO, FISHGROUP_POND
• Attributes: data/maps/attributes.asm:259 map_attributes ViridianCity, VIRIDIAN_CITY, $0f
• Dimensions: constants/map_constants.asm:423 map_const VIRIDIAN_CITY, 20, 18 -> 20x18 blocks = 40x36 cells. Group VIRIDIAN (23), map id 3.
• Connections: connection north, Route2, ROUTE_2, 5; connection south, Route1, ROUTE_1, 10; connection west, Route22, ROUTE_22, 4
• Callbacks: callback MAPCALLBACK_NEWMAP, ViridianCityFlypointCallback (sym 4e:4005) -> setflag ENGINE_FLYPOINT_VIRIDIAN

Warps (maps/ViridianCity.asm:219-224)

idx	x	y	destination map	dest warp
1	32	7	VIRIDIAN_GYM	1
2	21	9	VIRIDIAN_NICKNAME_SPEECH_HOUSE	1
3	23	15	TRAINER_HOUSE_1F	1
4	29	19	VIRIDIAN_MART	2
5	23	25	VIRIDIAN_POKECENTER_1F	1

Coord events - def_coord_events is empty.

BG events (maps/ViridianCity.asm:228-234)

x	y	type	script/item
17	17	BGEVENT_READ	ViridianCitySign
27	7	BGEVENT_READ	ViridianGymSign
19	1	BGEVENT_READ	ViridianCityWelcomeSign
21	15	BGEVENT_READ	TrainerHouseSign
24	25	BGEVENT_READ	ViridianCityPokecenterSign -> jumpstd PokecenterSignScript
30	19	BGEVENT_READ	ViridianCityMartSign -> jumpstd MartSignScript

Object events (maps/ViridianCity.asm:236-240)

const	sprite	x	y	movement	type	script label	event flag
VIRIDIANCITY_GRAMPS1	SPRITE_GRAMPS	18	5	WANDER (r 2,2)	OBJECTTYPE_SCRIPT	ViridianCityCoffeeGramps (sym 4e:4009)	-1
VIRIDIANCITY_GRAMPS2	SPRITE_GRAMPS	30	8	STANDING_DOWN, PAL_NPC_BLUE	OBJECTTYPE_SCRIPT	ViridianCityGrampsNearGym (sym 4e:401e)	-1
VIRIDIANCITY_FISHER	SPRITE_FISHER	6	23	STANDING_DOWN, PAL_NPC_RED	OBJECTTYPE_SCRIPT	ViridianCityDreamEaterFisher (sym 4e:4032)	-1
VIRIDIANCITY_YOUNGSTER	SPRITE_YOUNGSTER	17	21	WANDER (r 3,3), PAL_NPC_GREEN	OBJECTTYPE_SCRIPT	ViridianCityYoungsterScript (sym 4e:404d)	-1

Scripts of interest

ViridianCityDreamEaterFisher (maps/ViridianCity.asm:50-65, sym 4e:4032):

faceplayer / opentext
checkevent EVENT_GOT_TM42_DREAM_EATER
iftrue .GotDreamEater
writetext ViridianCityDreamEaterFisherText / promptbutton
verbosegiveitem TM_DREAM_EATER
iffalse .NoRoomForDreamEater      ; bag full -> flag NOT set, retryable
setevent EVENT_GOT_TM42_DREAM_EATER
.GotDreamEater: writetext ...GotDreamEaterText / waitbutton
.NoRoomForDreamEater: closetext / end

TM_DREAM_EATER is item $ea (constants/item_constants.asm:263, the 42nd add_tm after DEF TM01 EQU const_value at line 219 - the two bare const rows ITEM_C3 and ITEM_DC do not consume TM numbers, which is why TM42 is Dream Eater and TM47 is Steel Wing).

Cut gate (verified from block data)

ViridianCity.blk block (4,11) is $34, whose tilecoll row is CUT_TREE, FLOOR, WALL, WALL (data/tilesets/kanto_collision.asm, block 34), so the COLL_CUT_TREE quadrant is the top-left = cell (8,22). A BFS over the collision grid says the fisher's pocket (x=4..7, y=22..26) has exactly one non-ledge entrance and it is that tile. Route:

• Pokecenter door (23,25) -> step down to (23,26)
• (23,26) -> (14,26) -> (14,23) -> (10,23) -> (10,22) -> (9,22)
• face LEFT at (9,22), Cut (8,22)
• (8,22) -> (7,22) -> (6,22) -> (6,23) faces the fisher at... he is at (6,23); stand at (6,22) and face DOWN, or (7,23) and face LEFT.

The pocket's south edge (x=4..7, y=26) is COLL_HOP_DOWN, i.e. one-way out.

The only other $34/$60/$32/$33/$35 block on this map is (7,2) = cell (14,4), which is not on any route in this section.

Items

item	how obtained	source (label / bg_event / hidden)	one-time flag
TM42 Dream Eater	talk to the fisher at (6,23) after Cutting (8,22)	ViridianCityDreamEaterFisher	EVENT_GOT_TM42_DREAM_EATER (constants/event_flags.asm:223)

Trainers - none on this map.

Wild encounters - FISHGROUP_POND per the header; no def_grass_wildmons VIRIDIAN_CITY row is needed by this section.

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MAP_ROUTE_22

• Script: maps/Route22.asm (data/maps/scripts.asm:169) - 28 lines, one sign and one warp, nothing else
• Blocks: maps/Route22.blk (data/maps/blocks.asm:310, 180 bytes)
• Header: data/maps/maps.asm:456 map Route22, TILESET_KANTO, ROUTE, LANDMARK_ROUTE_22, MUSIC_ROUTE_3, FALSE, PALETTE_AUTO, FISHGROUP_POND
• Attributes: data/maps/attributes.asm:264 map_attributes Route22, ROUTE_22, $2c
• Dimensions: constants/map_constants.asm:422 map_const ROUTE_22, 20, 9 -> 20x9 blocks = 40x18 cells. Group VIRIDIAN (23), map id 2.
• Connections: connection east, ViridianCity, VIRIDIAN_CITY, -4 (only one). Crossing east from (39, y) lands on Viridian City (0, y + 8); crossing west from Viridian (0, y) lands on Route 22 (39, y - 8).
• Scene scripts / callbacks: both empty.

Warps (maps/Route22.asm:19-20)

idx	x	y	destination map	dest warp
1	13	5	VICTORY_ROAD_GATE	1

Coord events - none.

BG events (maps/Route22.asm:24-25)

x	y	type	script/item
15	7	BGEVENT_READ	VictoryRoadEntranceSign (sym 4e:44f9) - read from (14,7) facing RIGHT

Object events - def_object_events is empty. There are no trainers and no item balls on Route 22, which matches the FAQ. The FAQ's "Items on Route 22: TM42 Dream Eater" is wrong; that TM is a Viridian City NPC gift (above).

Traversal (verified by BFS over Route22.blk + kanto_collision.asm)

The map is a set of shelves joined by one-way ledges. Entering from Viridian at (39, 6..9), the only path to the gate warp is:

(39,7) -> (35,7) -> (35,11)
(35,12) is COLL_HOP_DOWN  ->  hop to (35,14)          [ledge, one-way]
(35,14) -> (33,14) -> (33,13) -> (33,12)              [the one non-ledge gap]
(33,12) -> (33,11) grass -> (31,8) -> (31,7) -> (31,5) [the y=4..5 plaza]
(31,5) -> (18,5)
(18,6) is COLL_HOP_DOWN  ->  hop to (18,8)            [ledge, one-way]
(18,8) grass -> (18,12) -> (14,12) -> (14,8) -> (13,7) -> (13,6) -> (13,5) warp 1

Ledge semantics: a COLL_HOP_* tile is LAND_TILE and can be walked onto; pressing the matching direction while standing on it jumps two cells, over the wall beneath. There is no ledge-free route: (18,7) and (35,13) are COLL_WALL.

Reachable tall grass in that component: (18..21, 8..11) and (30..33, 8..11). Surfable water adjacent to it: (22..25, 6) from the plaza row y=5, and (22..25, 9) from the (22..25,10..11) shelf.

Wild encounters - data/wild/kanto_grass.asm:1033, def_grass_wildmons ROUTE_22, encounter rate 10 percent in all three time slots. Slot probabilities are 30/30/20/10/5/4/1 (data/wild/probabilities.asm:6-15).

slot	morn	day	nite
1 (30%)	L3 RATTATA	L3 RATTATA	L3 RATTATA
2 (30%)	L3 SPEAROW	L3 SPEAROW	L3 RATTATA
3 (20%)	L5 SPEAROW	L5 SPEAROW	L5 RATTATA
4 (10%)	L4 DODUO	L4 DODUO	L4 RATTATA
5 (5%)	L6 PONYTA	L6 PONYTA	L6 PONYTA
6 (4%)	L7 FEAROW	L7 FEAROW	L7 RATTATA
7 (1%)	L7 FEAROW	L7 FEAROW	L7 RATTATA

Water (data/wild/kanto_water.asm:68, def_water_wildmons ROUTE_22, rate 2 percent, slot probabilities 60/30/10): L10 POLIWAG, L5 POLIWAG, L10 POLIWHIRL. The FAQ's "#060 Poliwag (surfing)" is right; it omits Doduo, Ponyta and Fearow from the grass list.

Fishing: FISHGROUP_POND (data/wild/fish.asm:72-85) - Old rod MAGIKARP/POLIWAG, Good rod MAGIKARP/POLIWAG + a time group, Super rod POLIWAG/MAGIKARP + a time group.

Headbutt: Route 22 has no row in data/wild/treemon_maps.asm.

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MAP_VICTORY_ROAD_GATE

• Script: maps/VictoryRoadGate.asm (data/maps/scripts.asm:452)
• Blocks: maps/VictoryRoadGate.blk (data/maps/blocks.asm:943, 90 bytes)
• Header: data/maps/maps.asm:467 map VictoryRoadGate, TILESET_GATE, GATE, LANDMARK_ROUTE_26, MUSIC_INDIGO_PLATEAU, FALSE, PALETTE_DAY, FISHGROUP_SHORE (note the landmark is LANDMARK_ROUTE_26, not Route 22 or 28 - relevant if a bot keys anything off the Pokegear location readout)
• Attributes: data/maps/attributes.asm:666 map_attributes VictoryRoadGate, VICTORY_ROAD_GATE, $00, no connections
• Dimensions: constants/map_constants.asm:433 map_const VICTORY_ROAD_GATE, 10, 9 -> 10x9 blocks = 20x18 cells. Group VIRIDIAN (23), map id 13.
• Scene variable: data/maps/scenes.asm:16 scene_var VICTORY_ROAD_GATE, wVictoryRoadGateSceneID (sym 01:d6bf)
• Scene scripts (maps/VictoryRoadGate.asm:7-9): SCENE_VICTORYROADGATE_BADGE_CHECK = 0 -> VictoryRoadGateNoop1Scene (bare end); SCENE_VICTORYROADGATE_NOOP = 1 -> VictoryRoadGateNoop2Scene (bare end). Both constants are minted by the scene_script macro's scene_const (macros/scripts/maps.asm:12-33), which is why grepping constants/ for them finds nothing.

Warps (maps/VictoryRoadGate.asm:101-109)

idx	x	y	destination map	dest warp
1	17	7	ROUTE_22	1
2	18	7	ROUTE_22	1
3	9	17	ROUTE_26	1
4	10	17	ROUTE_26	1
5	9	0	VICTORY_ROAD	1
6	10	0	VICTORY_ROAD	1
7	1	7	ROUTE_28	2
8	2	7	ROUTE_28	2

Coord events (maps/VictoryRoadGate.asm:111-112)

scene	x	y	script label	effect
SCENE_VICTORYROADGATE_BADGE_CHECK (0)	10	11	VictoryRoadGateBadgeCheckScript (sym 5f:4fdc)	turnobject PLAYER, LEFT then the officer's speech; < 8 Johto badges -> applymovement PLAYER, VictoryRoadGateStepDownMovement (one step DOWN); 8 badges -> setscene SCENE_VICTORYROADGATE_NOOP and the trip-wire never fires again

A bot arriving from Route 22 (warp 1/2) never crosses (10,11): the east-west hall is at y=5 and the badge check sits in the southern stub from Route 26. The check is therefore not a gate on this section's route.

BG events - def_bg_events is empty.

Object events (maps/VictoryRoadGate.asm:116-119)

const	sprite	x	y	movement	type	script label	event flag
VICTORYROADGATE_OFFICER	SPRITE_OFFICER	8	11	STANDING_RIGHT	OBJECTTYPE_SCRIPT	VictoryRoadGateOfficerScript (sym 5f:4fe2)	-1
VICTORYROADGATE_BLACK_BELT1	SPRITE_BLACK_BELT	7	5	STANDING_RIGHT	OBJECTTYPE_SCRIPT	VictoryRoadGateLeftBlackBeltScript (sym 5f:5000)	EVENT_OPENED_MT_SILVER
VICTORYROADGATE_BLACK_BELT2	SPRITE_BLACK_BELT	12	5	STANDING_LEFT	OBJECTTYPE_SCRIPT	VictoryRoadGateRightBlackBeltScript (sym 5f:5003)	EVENT_FOUGHT_SNORLAX

Geometry (from VictoryRoadGate.blk + data/tilesets/gate_collision.asm)

The building is a plus: one 20-wide, one-cell-tall hall at y=5, a north stub (x=8..11, y=0..4) to Victory Road, a south stub (x=8..11, y=6..17) to Route 26 with the officer's counter at y=10..13, and two 4-wide vestibules at y=6..7 - west (x=0..3, the Route 28 warps) and east (x=16..19, the Route 22 warps). Cells (7,5) and (12,5) are the only tiles joining the centre to the west and east vestibules respectively, and each is exactly where a black belt stands.

BFS from the Route 22 warp (17,7), toggling the two NPCs:

NPCs present	reach ROUTE_28 warp (1,7)	reach Victory Road door (9,0)	reach badge coord (10,11)
neither	yes	yes	yes
left only (EVENT_OPENED_MT_SILVER clear)	no	yes	yes
right only (EVENT_FOUGHT_SNORLAX clear)	no	no	no
both	no	no	no

Trainers - none.

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MAP_ROUTE_28

• Script: maps/Route28.asm (data/maps/scripts.asm:131) - one sign, one hidden item, no NPCs
• Blocks: maps/Route28.blk (data/maps/blocks.asm:15, 180 bytes)
• Header: data/maps/maps.asm:396 map Route28, TILESET_KANTO, ROUTE, LANDMARK_ROUTE_28, MUSIC_INDIGO_PLATEAU, FALSE, PALETTE_AUTO, FISHGROUP_POND
• Attributes: data/maps/attributes.asm:174 map_attributes Route28, ROUTE_28, $2c
• Dimensions: constants/map_constants.asm:366 map_const ROUTE_28, 20, 9 -> 20x9 blocks = 40x18 cells. Group SILVER (19), map id 1.
• Connections: connection west, SilverCaveOutside, SILVER_CAVE_OUTSIDE, -9. Crossing west from (0, y) lands on Silver Cave Outside (39, y + 18); crossing east from Silver Cave Outside (39, y) lands on Route 28 (0, y - 18).
• Scene scripts / callbacks: both empty. Route 28 has no flypoint callback - the Fly destination near Mt. Silver is SILVER_CAVE_OUTSIDE.

Warps (maps/Route28.asm:19-21)

idx	x	y	destination map	dest warp
1	7	3	ROUTE_28_STEEL_WING_HOUSE	1
2	33	5	VICTORY_ROAD_GATE	7

Coord events - none.

BG events (maps/Route28.asm:25-27)

x	y	type	script/item
31	5	BGEVENT_READ	Route28Sign (sym 4a:4d4d) - read from (30,5) facing RIGHT
25	2	BGEVENT_ITEM	Route28HiddenRareCandy (sym 4a:4d50) = hiddenitem RARE_CANDY, EVENT_ROUTE_28_HIDDEN_RARE_CANDY

RARE_CANDY is item $20 (constants/item_constants.asm:40). The hidden-item row is three bytes (dwb flag, item), not a script; the port carries it on the bg event as hiddenItem = { item, event } (src/world/gen2/HiddenItems.lua:7-12).

Object events - def_object_events is empty. No trainers, no item balls.

Geometry: Route 28 is two disconnected halves

BFS over Route28.blk from the Victory Road Gate landing (33,6):

• the main body reaches the sign approach (30,5) and the west edge only at y=12..13 -> Silver Cave Outside (39, 30..31);
• it does not reach (7,3), (25,3) or any of y=3..4.

BFS from the west edge at (0,3) - the isolated north-west strip - reaches the house door (7,3) and the hidden-item approach (25,3), and then falls one-way into the main body over the COLL_HOP_DOWN row at y=4 (x=4..9, landing in the grass at y=6). So:

• entering the strip: only from SILVER_CAVE_OUTSIDE (39,21) -> ROUTE_28 (0,3), which itself needs two Cuts (see below);
• inside the strip: (0,3) -> (5,3) -> (5,4) -> (7,4) -> north into the door (7,3); and (7,4) -> (21,4) -> (21,3) -> (25,3), then face UP for the hidden Rare Candy at (25,2);
• leaving the strip: hop any of the y=4 ledges (x=4..9) down into the main body, which is one-way. Re-entering means going round through Silver Cave Outside again.

Main-body route from the gate to Silver Cave Outside: (33,6) -> (28,6) -> (28,8), hop (27,8)->(27,10), west along y=10 to (18,10) -> (18,9) -> (10,9) -> (10,10) -> (8,10), hop (8,10)->(8,12), west along y=12 to (0,12).

Items

item	how obtained	source	one-time flag
Rare Candy	hidden, face (25,2) from (25,3) and press A, or use the Itemfinder	Route28HiddenRareCandy bg_event	EVENT_ROUTE_28_HIDDEN_RARE_CANDY (constants/event_flags.asm:173)

The FAQ lists "Items: TM47 Steel Wing" for Route 28 and never mentions the Rare Candy. TM47 is in the house, not on the route.

Wild encounters - data/wild/kanto_grass.asm:1227, def_grass_wildmons ROUTE_28, rate 10 percent all day. The table is IF DEF(_GOLD) / ELIF DEF(_SILVER):

slot	Gold morn/day	Gold nite	Silver morn/day	Silver nite
1 (30%)	L39 TANGELA	L39 TANGELA	L39 TANGELA	L39 TANGELA
2 (30%)	L40 PONYTA	L40 PONYTA	L40 PONYTA	L40 PONYTA
3 (20%)	L40 URSARING	L40 URSARING	L40 DONPHAN	L40 DONPHAN
4 (10%)	L42 RAPIDASH	L40 SNEASEL	L42 RAPIDASH	L40 SNEASEL
5 (5%)	L41 DODUO	L42 RAPIDASH	L41 DODUO	L42 RAPIDASH
6 (4%)	L43 DODRIO	L42 RAPIDASH	L43 DODRIO	L42 RAPIDASH
7 (1%)	L43 DODRIO	L42 RAPIDASH	L43 DODRIO	L42 RAPIDASH

So on Gold the FAQ's Donphan does not appear (Ursaring takes that slot), and Sneasel is nite-only. Tangela is the 30% lead slot at every time of day, which makes the FAQ's "consider catching a Tangela" cheap to satisfy.

Water (data/wild/kanto_water.asm:110, rate 2 percent): L40 POLIWAG, L35 POLIWAG, L40 POLIWHIRL. Fishing: FISHGROUP_POND, same table as Route 22. Headbutt: data/wild/treemon_maps.asm:9 treemon_map ROUTE_28, TREEMON_SET_NONE

• headbutting a Route 28 tree yields nothing.

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MAP_ROUTE_28_STEEL_WING_HOUSE

• Script: maps/Route28SteelWingHouse.asm (data/maps/scripts.asm:388)
• Blocks: data/maps/blocks.asm:181 (Route28SteelWingHouse_Blocks)
• Header: data/maps/maps.asm:399 map Route28SteelWingHouse, TILESET_HOUSE, INDOOR, LANDMARK_ROUTE_28, MUSIC_AZALEA_TOWN, FALSE, PALETTE_DAY, FISHGROUP_SHORE
• Attributes: data/maps/attributes.asm:624, no connections
• Dimensions: constants/map_constants.asm:369 map_const ROUTE_28_STEEL_WING_HOUSE, 4, 4 -> 8x8 cells. Group SILVER (19), map id 4.
• Scene scripts: one scene_script Route28SteelWingHouseNoopScene marked "unusable" in the source; body is a bare end.

Warps (maps/Route28SteelWingHouse.asm:74-76)

idx	x	y	destination map	dest warp
1	2	7	ROUTE_28	1
2	3	7	ROUTE_28	1

Coord events - none.

BG events (maps/Route28SteelWingHouse.asm:80-82)

x	y	type	script/item
0	1	BGEVENT_READ	CelebrityHouseBookshelf -> jumpstd MagazineBookshelfScript
1	1	BGEVENT_READ	CelebrityHouseBookshelf

Object events (maps/Route28SteelWingHouse.asm:84-86)

const	sprite	x	y	movement	type	script label	event flag
ROUTE28STEELWINGHOUSE_CELEBRITY	SPRITE_COOLTRAINER_F	2	3	STANDING_DOWN, PAL_NPC_GREEN	OBJECTTYPE_SCRIPT	Celebrity (sym 5c:4be9)	-1
ROUTE28STEELWINGHOUSE_FEAROW	SPRITE_MOLTRES	6	5	SPRITEMOVEDATA_POKEMON, PAL_NPC_BROWN	OBJECTTYPE_SCRIPT	CelebritysFearow (sym 5c:4c06)	-1

The pet is a Fearow but reuses SPRITE_MOLTRES recoloured with PAL_NPC_BROWN; CelebritysFearow does cry FEAROW. Worth knowing if a bot asserts on sprite ids.

Scripts of interest

Celebrity (maps/Route28SteelWingHouse.asm:14-31, sym 5c:4be9):

faceplayer / opentext
checkevent EVENT_GOT_TM47_STEEL_WING
iftrue .AlreadyGotItem
writetext CelebrityText1 / promptbutton
verbosegiveitem TM_STEEL_WING
iffalse .Done                      ; bag full -> flag NOT set, retryable
setevent EVENT_GOT_TM47_STEEL_WING
.Done: closetext / end

Note the shape differs from the Dream Eater fisher: there is no "thanks" text after a successful give, the script just closes.

Items

item	how obtained	source	one-time flag
TM47 Steel Wing ($ef)	talk to Celebrity at (2,3) from (2,4) facing UP	Celebrity	EVENT_GOT_TM47_STEEL_WING (constants/event_flags.asm:125)

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MAP_SILVER_CAVE_OUTSIDE (east edge only - the rest is the next section)

• Script: maps/SilverCaveOutside.asm (data/maps/scripts.asm:124)
• Blocks: maps/SilverCaveOutside.blk (data/maps/blocks.asm:559, 360 bytes)
• Header: data/maps/maps.asm:397 map SilverCaveOutside, TILESET_KANTO, TOWN, LANDMARK_SILVER_CAVE, MUSIC_INDIGO_PLATEAU, FALSE, PALETTE_AUTO, FISHGROUP_POND
• Attributes: data/maps/attributes.asm:164 map_attributes SilverCaveOutside, SILVER_CAVE_OUTSIDE, $2c
• Dimensions: constants/map_constants.asm:367 map_const SILVER_CAVE_OUTSIDE, 20, 18 -> 40x36 cells. Group SILVER (19), map id 2.
• Connections: connection east, Route28, ROUTE_28, 9
• Callbacks: callback MAPCALLBACK_NEWMAP, SilverCaveOutsideFlypointCallback (sym 49:5f1a) -> setflag ENGINE_FLYPOINT_SILVER_CAVE. Spawn SPAWN_MT_SILVER = (23,20) (data/maps/spawn_points.asm:39), i.e. the tile below the Pokecenter door - this is the "fly back to the Pokémon Center on Route 28" the FAQ means.

Warps (maps/SilverCaveOutside.asm:27-29)

idx	x	y	destination map	dest warp
1	23	19	SILVER_CAVE_POKECENTER_1F	1
2	18	11	SILVER_CAVE_ROOM_1	1

BG events (maps/SilverCaveOutside.asm:33-36)

x	y	type	script/item
24	19	BGEVENT_READ	MtSilverPokecenterSign (sym 49:5f1e)
17	13	BGEVENT_READ	MtSilverSign (sym 49:5f21)
9	25	BGEVENT_ITEM	SilverCaveOutsideHiddenFullRestore (sym 49:5f24) = hiddenitem FULL_RESTORE, EVENT_SILVER_CAVE_OUTSIDE_HIDDEN_FULL_RESTORE (constants/event_flags.asm:194) - next section's, and not reachable from the east side without Surf

Coord events / object events - both empty.

The two Cut trees (verified from block data)

data/collision/field_move_blocks.asm:24-31, CutTreeBlockPointers.kanto, lists the cuttable blocks for TILESET_KANTO: $0b -> $0a (grass, animation 1) and $32 -> $6d, $33 -> $6c, $34 -> $6f, $35 -> $4c, $60 -> $6e (trees, animation 0). SilverCaveOutside.blk contains exactly two of them:

block coord	block id	tilecoll row	COLL_CUT_TREE cell	replacement block
(17,11)	$60	FLOOR, WALL, CUT_TREE, WALL	(34,23)	$6e
(15,12)	$35	FLOOR, CUT_TREE, WALL, FLOOR	(31,24)	$4c

BFS from the Route 28 landing (39,30):

• with no cuts: the Pokecenter door (23,19), the cave mouth (18,11) and the approach tile (30,24) are reachable; (39,21) is not;
• after cutting (31,24) only: (34,24) becomes reachable, (39,21) still not;
• after cutting both: (39,21) is reachable -> ROUTE_28 (0,3).

Route from the Pokecenter door to the house, waypoint by waypoint:

(23,19) door -> (23,20) -> (25,20) -> (25,22) -> (30,22) -> (30,24)
face RIGHT, Cut (31,24)
(31,24) -> (31,25) -> (34,25) -> (34,24)
face UP, Cut (34,23)
(34,23) -> (34,21) -> (39,21) -> cross east -> ROUTE_28 (0,3)
(0,3) -> (5,3) -> (5,4) -> (7,4) -> face UP into warp 1 at (7,3)

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MAP_SILVER_CAVE_POKECENTER_1F

• Script: maps/SilverCavePokecenter1F.asm (data/maps/scripts.asm:387)
• Header: data/maps/maps.asm:398 map SilverCavePokecenter1F, TILESET_POKECENTER, INDOOR, LANDMARK_SILVER_CAVE, MUSIC_POKEMON_CENTER, FALSE, PALETTE_DAY, FISHGROUP_SHORE
• Attributes: data/maps/attributes.asm:623
• Dimensions: constants/map_constants.asm:368 map_const SILVER_CAVE_POKECENTER_1F, 5, 4 -> 10x8 cells. Group SILVER (19), map id 3.

Warps (maps/SilverCavePokecenter1F.asm:33-36)

idx	x	y	destination map	dest warp
1	3	7	SILVER_CAVE_OUTSIDE	1
2	4	7	SILVER_CAVE_OUTSIDE	1
3	0	7	POKECENTER_2F	1

Object events (maps/SilverCavePokecenter1F.asm:42-44)

const	sprite	x	y	movement	type	script label	event flag
SILVERCAVEPOKECENTER1F_NURSE	SPRITE_NURSE	3	1	STANDING_DOWN	OBJECTTYPE_SCRIPT	SilverCavePokecenter1FNurseScript (sym 5c:4b2b) -> jumpstd PokecenterNurseScript	-1
SILVERCAVEPOKECENTER1F_GRANNY	SPRITE_GRANNY	1	5	STANDING_LEFT (r 2,1)	OBJECTTYPE_SCRIPT	SilverCavePokecenter1FGrannyScript (sym 5c:4b2e)	-1

No mart clerk on this map - the FAQ's "fly to Mahogany Town's Pokemart to buy some" is correct precisely because there is nothing to buy here.

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3. Blockers and gates

Gate	Enforced by (file:label)	Requirement	Unlock condition
Route 28 / Mt. Silver	maps/VictoryRoadGate.asm:118 object row VICTORYROADGATE_BLACK_BELT1 at (7,5) + engine/overworld/map_objects_2.asm:32 CheckObjectFlag	EVENT_OPENED_MT_SILVER set, which hides the NPC and frees the only tile between the gate's centre and its west vestibule	talk to Oak (maps/OaksLab.asm:15) with VAR_BADGES == NUM_BADGES (16; constants/ram_constants.asm:273)
Route 22 from the gate	maps/VictoryRoadGate.asm:119 object row VICTORYROADGATE_BLACK_BELT2 at (12,5)	EVENT_FOUGHT_SNORLAX (constants/event_flags.asm:1266)	set long before this section (Kanto). Listed because it uses the same mechanism and a bot that clears flags for testing will wall itself in
Victory Road Gate south corridor	maps/VictoryRoadGate.asm:112 coord event (10,11) -> VictoryRoadGateBadgeCheckScript	readvar VAR_BADGES ifgreater NUM_JOHTO_BADGES - 1 i.e. >= 8 badges	already satisfied; and the Route 22 -> Route 28 path never touches (10,11)
Dream Eater fisher (Viridian)	data/collision/field_move_blocks.asm:24 .kanto block $34 at Viridian block (4,11) -> COLL_CUT_TREE at cell (8,22)	HM01 Cut in the party and ENGINE_HIVEBADGE	engine/events/overworld.asm:1741 TryCutOW: CheckPartyMove CUT, then ld de, ENGINE_HIVEBADGE / call CheckEngineFlag; failure runs CantCutScript
Steel Wing house / Route 28 west strip	two COLL_CUT_TREE cells on SILVER_CAVE_OUTSIDE: (31,24) (block $35) and (34,23) (block $60)	same Cut + ENGINE_HIVEBADGE check	as above. Both trees are required - cutting only (31,24) does not open (39,21)
Fly to Pallet / Viridian / Mt. Silver	engine/events/overworld.asm:543-545 FlyFunction.TryFly: ld de, ENGINE_STORMBADGE / call CheckBadge, then GetMapEnvironment / CheckOutdoorMap	STORMBADGE + HM02 Fly + the destination's ENGINE_FLYPOINT_* bit	ENGINE_FLYPOINT_PALLET (constants/engine_flags.asm:67), ENGINE_FLYPOINT_VIRIDIAN (68), ENGINE_FLYPOINT_SILVER_CAVE (90), each set by that map's MAPCALLBACK_NEWMAP the first time you walk in
Surf (Route 22 / Route 28 water)	engine/events/overworld.asm:340 and :490, ld de, ENGINE_FOGBADGE	FOGBADGE + HM03 Surf	optional in this section
Route 22 traversal	Route22.blk collision: (35,12) and (18,6) are COLL_HOP_DOWN with COLL_WALL beneath	ledge hopping (walk onto the ledge tile, then press the matching direction to jump two cells)	no item needed, but there is no ledge-free route to the gate warp
Route 28 west strip re-entry	Route28.blk y=4 ledge row (x=4..9)	one-way; falling off it drops you into the main body	re-enter via SILVER_CAVE_OUTSIDE (39,21)

4. Bot checklist

Preconditions for the whole section: 16 badges, HM01 Cut + HIVEBADGE, HM02 Fly + STORMBADGE, EVENT_FOUGHT_SNORLAX set, ENGINE_FLYPOINT_PALLET and ENGINE_FLYPOINT_VIRIDIAN already visited.

#	Map	Target	Intent	Precondition	Postcondition
1	anywhere outdoor	SPAWN_PALLET	Fly	STORMBADGE, ENGINE_FLYPOINT_PALLET	player at PALLET_TOWN (5,6)
2	PALLET_TOWN	(12,11)	walk (5,6)->(9,6)->(9,12)->(12,12)->(12,11)	-	warp to OAKS_LAB (4,11)
3	OAKS_LAB	(4,3) facing UP	walk, then talk to OAKSLAB_OAK	VAR_BADGES == 16	EVENT_OPENED_MT_SILVER set; expect EVENT_TALKED_TO_OAK_IN_KANTO on the first visit and a ProfOaksPCBoot dex-rating textbox chain
4	OAKS_LAB	(4,11)	walk into warp 1	-	back on PALLET_TOWN (12,11)
5	anywhere outdoor	SPAWN_VIRIDIAN	Fly	ENGINE_FLYPOINT_VIRIDIAN	player at VIRIDIAN_CITY (23,26)
6 (optional)	VIRIDIAN_CITY	(9,22) facing LEFT	walk (23,26)->(14,26)->(14,23)->(10,23)->(10,22)->(9,22), then Cut	Cut + HIVEBADGE, EVENT_GOT_TM42_DREAM_EATER clear	block at (8,22) replaced with $6f
7 (optional)	VIRIDIAN_CITY	VIRIDIANCITY_FISHER at (6,23), talk from (6,22) facing DOWN	talk	bag has room	TM42 Dream Eater; EVENT_GOT_TM42_DREAM_EATER set
8	VIRIDIAN_CITY	west edge, x=0 at y=15	walk (0,17)->(0,15) then step LEFT	-	map change to ROUTE_22 (39,7)
9	ROUTE_22	(35,12)	walk (39,7)->(35,7)->(35,11)->(35,12)	-	standing on a COLL_HOP_DOWN tile
10	ROUTE_22	press DOWN	ledge hop	-	player at (35,14)
11	ROUTE_22	(33,12)	walk (35,14)->(33,14)->(33,13)->(33,12)	-	-
12	ROUTE_22	(31,5)	walk (33,12)->(33,11)->(31,11)->(31,8)->(31,7)->(31,6)->(31,5) - crosses the tall grass at (30..33, 8..11)	-	expect wild encounters, 10% per step in grass
13	ROUTE_22	(18,6)	walk west along y=5 to (18,5), then DOWN onto (18,6)	-	standing on a ledge tile
14	ROUTE_22	press DOWN	ledge hop	-	player at (18,8), in the west grass patch
15	ROUTE_22	(13,5)	walk (18,8)->(18,12)->(14,12)->(14,8)->(13,8)->(13,7)->(13,6)->(13,5)	-	warp to VICTORY_ROAD_GATE (17,7)
16	VICTORY_ROAD_GATE	(1,7)	walk (17,7)->(17,5)->west along y=5->(1,5)->(1,7)	EVENT_OPENED_MT_SILVER and EVENT_FOUGHT_SNORLAX set (both black belts hidden)	warp to ROUTE_28 (33,5)
17	ROUTE_28	(0,12)	walk (33,5)->(33,6)->(28,6)->(28,8), hop (27,8)->(27,10), west y=10 to (18,10)->(18,9)->(10,9)->(10,10)->(8,10), hop ->(8,12), west to (0,12)	-	map change to SILVER_CAVE_OUTSIDE (39,30)
18	SILVER_CAVE_OUTSIDE	(23,20)	walk north-west to the Pokecenter door	-	ENGINE_FLYPOINT_SILVER_CAVE set by MAPCALLBACK_NEWMAP
19	SILVER_CAVE_OUTSIDE	(23,19)	step UP into warp 1	-	SILVER_CAVE_POKECENTER_1F (3,7)
20	SILVER_CAVE_POKECENTER_1F	nurse at (3,1), talk from (3,2) facing UP	heal	-	party restored
21	SILVER_CAVE_POKECENTER_1F	(3,7)	step DOWN into warp 1	-	SILVER_CAVE_OUTSIDE (23,19)
22	SILVER_CAVE_OUTSIDE	(30,24) facing RIGHT	walk (23,20)->(25,20)->(25,22)->(30,22)->(30,24), then Cut	Cut + HIVEBADGE	(31,24) replaced with $4c
23	SILVER_CAVE_OUTSIDE	(34,24) facing UP	walk (31,24)->(31,25)->(34,25)->(34,24), then Cut	Cut + HIVEBADGE	(34,23) replaced with $6e
24	SILVER_CAVE_OUTSIDE	(39,21)	walk (34,23)->(34,21)->(39,21), step RIGHT	-	map change to ROUTE_28 (0,3)
25	ROUTE_28	(25,3) facing UP	walk (0,3)->(5,3)->(5,4)->(7,4)->(21,4)->(21,3)->(25,3), press A	EVENT_ROUTE_28_HIDDEN_RARE_CANDY clear	Rare Candy; flag set
26	ROUTE_28	(7,3)	walk back west along y=4 to (7,4), step UP	-	warp to ROUTE_28_STEEL_WING_HOUSE (2,7)
27	ROUTE_28_STEEL_WING_HOUSE	Celebrity at (2,3), talk from (2,4) facing UP	talk	bag has room, EVENT_GOT_TM47_STEEL_WING clear	TM47 Steel Wing; flag set
28	ROUTE_28_STEEL_WING_HOUSE	(2,7)	step DOWN into warp 1	-	ROUTE_28 (7,3)
29	ROUTE_28	any y=4 ledge (x=4..9)	walk to it and press DOWN	-	one-way drop into the Route 28 main body (grass at y=6) - the strip cannot be re-entered from here
30	-	shopping run	Fly to Mahogany, buy, Fly back to SPAWN_MT_SILVER	ENGINE_FLYPOINT_SILVER_CAVE set in step 18	ready for SILVER_CAVE_OUTSIDE warp 2 at (18,11) - next section

5. Port coverage

Beat	Port file	Status
Map headers, dimensions, warps / coord / bg / object event tables for all of these maps	src/import/RomExtractorGen2.lua:787-862 (warps, coordEvents, bgEvents, objects), consumed by src/world/gen2/Map.lua	implemented, and generic - no per-map work needed
Map connections and the offset landing maths	src/world/gen2/Map.lua:71-92 Map.connectionLanding	implemented (same block-offset maths this doc's route uses)
object_event event-flag masking (the black-belt gate)	src/world/gen2/Events.lua:40-44 Events:objectVisible, called from src/world/gen2/World.lua:5106 and :5122	implemented, with the correct "flag set -> hidden" polarity
Oak's opcode chain (checkevent / readvar / setevent / special)	src/script/gen2/Vm.lua:187 (checkevent), :670 (readvar), src/world/gen2/World.lua:1240-1245 (VAR_BADGES = popcount of both badge bytes)	implemented
special ProfOaksPCBoot (the dex rating after every Oak conversation)	src/script/gen2/Specials.lua:1778 H.ProfOaksPCBoot	implemented, including the OakRatings table and the fanfare wait
verbosegiveitem for TM42 / TM47, including the bag-full iffalse arm	src/script/gen2/Vm.lua:490-498	implemented
hiddenitem (Route 28 Rare Candy) via BGEVENT_ITEM	src/world/gen2/HiddenItems.lua (whole file), wired at src/world/gen2/World.lua:30 and :3423	implemented
jumpstd for PokecenterNurseScript / MagazineBookshelfScript / DifficultBookshelfScript / PokecenterSignScript / MartSignScript	src/script/gen2/Vm.lua:742-747	implemented (std scripts are extracted and run through the same VM)
Cut: badge + party-move check, CutTreeBlockPointers lookup, block replacement	src/world/gen2/FieldMoves.lua:101-107 (badge map), :183-237 (field_move_blocks.asm transcribed), :454, :605-619	implemented
Fly: STORMBADGE check, flypoint table, ENGINE_FLYPOINT_* bits	src/world/gen2/FieldMoves.lua:336-380 (FLYPOINTS, incl. SPAWN_PALLET 52, SPAWN_VIRIDIAN 53, SPAWN_MT_SILVER 75), src/ui/TownMap.lua:146-208, src/world/gen2/World.lua:4292	implemented
Scene scripts / setscene / coord-event dispatch (Victory Road Gate badge check)	src/world/gen2/World.lua:470 (mapScenes), :5013-5033	implemented
cry FEAROW on the celebrity's pet	src/script/gen2/Vm.lua:621	implemented
Ledge hopping (COLL_HOP_DOWN / HOP_LEFT / HOP_RIGHT / HOP_DOWN_LEFT / HOP_DOWN_RIGHT)	src/world/gen2/Player.lua:50-83 Player:tryMove - plain single-cell step, no CheckLedge equivalent; src/world/gen2/Permissions.lua maps $a0..$a7 to LAND so the tiles are walkable but never jump	missing. Route 22 cannot be crossed without it: (35,12) and (18,6) are ledges over COLL_WALL, and there is no alternative route to the gate warp. Route 28's west strip also exits only by ledge
Route 22 / Route 28 / Silver Cave wild tables	generic (data/wild/* extracted by RomExtractorGen2.lua)	implemented as data; not separately verified for these three maps
A driver that walks any of this	tests/drivers/gold_*.lua (25 drivers; none touches Kanto or Mt. Silver)	missing

6. Unresolved / verify by hand

• "Items on Route 22: TM42 Dream Eater" - the asm puts the Dream Eater NPC on MAP_VIRIDIAN_CITY at (6,23) (maps/ViridianCity.asm:239). maps/Route22.asm has an empty def_object_events and no item bg event at all. The FAQ's prose ("If you cut the tree to the west of Viridian City") is right; its item header is wrong.
• "There's also a Pokémon Center here" (Route 28) - there is no Pokecenter on MAP_ROUTE_28. The nearest one is MAP_SILVER_CAVE_POKECENTER_1F, entered from MAP_SILVER_CAVE_OUTSIDE warp 1 at (23,19), one map west.
• "Items [Route 28]: TM47 Steel Wing" - TM47 is inside MAP_ROUTE_28_STEEL_WING_HOUSE. Route 28 itself has one item, the hidden Rare Candy at (25,2), which the FAQ never mentions.
• "#232 Donphan (Silver only)" - correct as far as it goes, but the FAQ omits what Gold puts in that slot (Ursaring, 20%) and omits Doduo/Dodrio entirely. It also does not say Sneasel is nite-only.
• Route 22 Pokemon list - the FAQ lists only Spearow, Rattata and Poliwag. data/wild/kanto_grass.asm:1033 also has Doduo (10%), Ponyta (5%) and Fearow (4%+1%) in the morn/day tables.
• The FAQ's "keep heading north, west, then north" is a fair prose summary but omits the two mandatory ledge hops. The waypoint list in section 4 was derived by BFS over Route22.blk against data/tilesets/kanto_collision.asm with the ledge rule "step onto a COLL_HOP_* tile, then a matching press moves two cells". That rule was inferred from the collision permission table ($a0..$a7 are LAND_TILE) and from the fact that every ledge on these maps has COLL_WALL directly beyond it; the exact DoPlayerMovement ledge branch in engine/overworld/player_movement.asm was not read line by line. Worth confirming before a driver depends on the two-cell jump distance.
• Route 28's "unreachable" rows - SILVER_CAVE_OUTSIDE's east edge is also walkable at y=14..18 and y=33..35, which map to ROUTE_28 y=-4..0 and y=15..17. Those Route 28 rows are outside the component reachable from either the gate or the west strip, so they look like filler; not chased further.
• Mt. Silver entry itself - maps/SilverCaveOutside.asm has no coord event, no callback check and no NPC guarding warp 2 at (18,11), and EVENT_OPENED_MT_SILVER is referenced in exactly two places (maps/OaksLab.asm:18,43 and maps/VictoryRoadGate.asm:118). So the flag gates the corridor, not the cave mouth. If a save is hacked past the gate NPC, the cave is open.
• Party/level requirements - the FAQ's "at least 10 Revives, 10 Hyper Potions, 5 Escape Ropes, 5 Max Repels, and 50 Ultra Balls" is advice, not a coded gate. Nothing in the asm checks the bag here.