gen1recomp/docs/gold-walkthrough/asm-walk/section-24-snorlax-and-pewter-city-gym.md

Section 24 - Snorlax and Pewter City Gym

Source: ../section-24-snorlax-and-pewter-city-gym.txt (the FAQ numbers this chapter "30 > Snorlax and Pewter City Gym"; the file index is 24)

Maps covered: MAP_ROUTE_19, MAP_ROUTE_19_FUCHSIA_GATE, MAP_VERMILION_CITY, MAP_VERMILION_POKECENTER_1F, MAP_DIGLETTS_CAVE, MAP_ROUTE_2, MAP_ROUTE_2_NUGGET_HOUSE, MAP_ROUTE_2_GATE, MAP_PEWTER_CITY, MAP_PEWTER_POKECENTER_1F, MAP_PEWTER_GYM

Badges / key milestones in this section:

• Level 50 SNORLAX caught in Vermilion City, holding LEFTOVERS (BATTLETYPE_FORCEITEM); clearing it opens the DIGLETT'S CAVE door
• SILVER_WING (Gold) / RAINBOW_WING (Silver) from the Pewter City gramps
• NUGGET from the Route 2 house
• CARBOS, DIRE_HIT, ELIXER, MAX_POTION item balls on Route 2
• BOULDERBADGE from BROCK (ENGINE_BOULDERBADGE)

---

1. Route order

#	Map constant	asm file	Enter via	Leaves via	Why (walkthrough beat)
0	FUCHSIA_CITY	-	previous section	south connection, or ROUTE_19_FUCHSIA_GATE warps 1/2 at (4,0)/(5,0)	Belongs to the previous section; only the hop south is listed
1	ROUTE_19_FUCHSIA_GATE	maps/Route19FuchsiaGate.asm	warps 1/2 at (4,0)/(5,0) from FUCHSIA_CITY 10/11	warps 3/4 at (4,7)/(5,7) -> ROUTE_19 1	Officer explains why Route 19 is shut
2	ROUTE_19	maps/Route19.asm	warp 1 at (7,3) from the gate	dead end - back through warp 1	Blocked. Route19ClearRocksCallback paints six boulders while EVENT_CINNABAR_ROCKS_CLEARED is clear
3	VERMILION_CITY	maps/VermilionCity.asm	FLY (ENGINE_FLYPOINT_VERMILION, set by VermilionCityFlypointCallback)	warp 10 at (34,7) -> DIGLETTS_CAVE 1	Wake and battle the SNORLAX at (34,8) with the POKe FLUTE radio channel
4	VERMILION_POKECENTER_1F	maps/VermilionPokecenter1F.asm	city warp 2 at (9,5)	warps 1/2 at (3,7)/(4,7) back	Heal and withdraw the caught SNORLAX
5	DIGLETTS_CAVE	maps/DiglettsCave.asm	warp 1 at (3,33) from VERMILION_CITY 10	warp 3 at (15,5) -> ROUTE_2 5	Ladder chain 2->5, long cave, ladder 6->4, then the door
6	ROUTE_2	maps/Route2.asm	warp 5 at (12,7) from DIGLETTS_CAVE 3	north connection to PEWTER_CITY	Carbos, Nugget house, Elixer, three Bug Catchers, two cut trees
7	ROUTE_2_NUGGET_HOUSE	maps/Route2NuggetHouse.asm	Route 2 warp 1 at (15,15)	warps 1/2 at (2,7)/(3,7) back	Route2NuggetHouseFisherScript -> verbosegiveitem NUGGET
8	ROUTE_2_GATE	maps/Route2Gate.asm	Route 2 warps 3/4 at (16,27)/(17,27)	warps 3/4 at (4,7)/(5,7) -> ROUTE_2 2 at (15,31)	The "route-changing house" that drops you further south on the same route
9	PEWTER_CITY	maps/PewterCity.asm	south connection from ROUTE_2 (connection north, PewterCity, PEWTER_CITY, -5)	five warps, see below	Sets ENGINE_FLYPOINT_PEWTER; gramps hands over the wing
10	PEWTER_POKECENTER_1F	maps/PewterPokecenter1F.asm	city warp 4 at (13,25)	warps 1/2 at (3,7)/(4,7) back	Heal; Chris runs trade NPC_TRADE_CHRIS (GLOOM -> RAPIDASH)
11	PEWTER_GYM	maps/PewterGym.asm	city warp 2 at (16,17)	warps 1/2 at (4,13)/(5,13) back	Camper Jerry, then BROCK for the BOULDERBADGE

Spillover: the FAQ's video-link header also names Tin Tower, Ho-Oh, Routes 1-4 and Pallet Town. Nothing in the prose of this section enters those maps - the Routes 3/4 and Pallet beats belong to the following section and are not covered here.

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2. Maps

MAP_ROUTE_19

• Script: maps/Route19.asm
• Blocks: maps/Route19.blk
• Header: data/maps/maps.asm:196 -> TILESET_KANTO, ROUTE, LANDMARK_ROUTE_19, MUSIC_ROUTE_3, FALSE (phone allowed), PALETTE_AUTO, FISHGROUP_SHORE
• Dimensions: constants/map_constants.asm:180 map_const ROUTE_19, 10, 18 (group CINNABAR, id 5) = 20 x 36 cells
• Attributes / border: data/maps/attributes.asm:287 map_attributes Route19, ROUTE_19, $43
• Connections: connection north, FuchsiaCity, FUCHSIA_CITY, 0; connection west, Route20, ROUTE_20, 9

Warps (def_warp_events)

idx	x	y	destination map	dest warp
1	7	3	ROUTE_19_FUCHSIA_GATE	3

Coord events (def_coord_events)

none.

BG events (def_bg_events)

x	y	type	script/item
11	13	BGEVENT_READ	Route19Sign
11	1	BGEVENT_READ	CarefulSwimmingSign

Object events (def_object_events)

const	sprite	x	y	movement	type	script label	event flag
ROUTE19_SWIMMER_GIRL	SPRITE_SWIMMER_GIRL	9	23	SPRITEMOVEDATA_STANDING_LEFT	OBJECTTYPE_TRAINER (sight 0)	TrainerSwimmerfDawn	-1
ROUTE19_SWIMMER_GUY1	SPRITE_SWIMMER_GUY	13	28	SPRITEMOVEDATA_SPINRANDOM_FAST	OBJECTTYPE_TRAINER (sight 3)	TrainerSwimmermHarold	-1
ROUTE19_SWIMMER_GUY2	SPRITE_SWIMMER_GUY	11	17	SPRITEMOVEDATA_SPINRANDOM_FAST	OBJECTTYPE_TRAINER (sight 3)	TrainerSwimmermJerome	-1
ROUTE19_SWIMMER_GUY3	SPRITE_SWIMMER_GUY	8	23	SPRITEMOVEDATA_STANDING_UP	OBJECTTYPE_TRAINER (sight 0)	TrainerSwimmermTucker	-1
ROUTE19_FISHER1	SPRITE_FISHER	9	5	SPRITEMOVEDATA_STANDING_DOWN	OBJECTTYPE_SCRIPT (sight 1)	Route19Fisher1Script	-1
ROUTE19_FISHER2	SPRITE_FISHER	11	5	SPRITEMOVEDATA_WALK_LEFT_RIGHT (radius 1,0)	OBJECTTYPE_SCRIPT (sight 1)	Route19Fisher2Script	-1

Scripts of interest

• Route19ClearRocksCallback (callback MAPCALLBACK_TILES). checkevent EVENT_CINNABAR_ROCKS_CLEARED / iftrue .Done; otherwise it runs six changeblock writes that lay a rock block ($7a) over block coordinates (6,6) (8,6) (10,6) (12,8) (4,8) (10,10). This is the wall the FAQ hits. Block coordinates, so the blocked cells are x = 2*bx .. 2*bx+1, y = 2*by .. 2*by+1.
• Route19Fisher1Script / Route19Fisher2Script both branch on EVENT_CINNABAR_ROCKS_CLEARED for flavour text only. Neither one clears the rocks - see "Blockers and gates".

Flags and events

constant	defined in	read/written by	meaning for a bot
EVENT_CINNABAR_ROCKS_CLEARED	constants/event_flags.asm:214	read by Route19ClearRocksCallback, Route19Fisher1Script, Route19Fisher2Script, Route19FuchsiaGateOfficerScript; set by Route20ClearRocksCallback (maps/Route20.asm:13, MAPCALLBACK_NEWMAP)	Route 19 stays blocked until the player has stood on Route 20, which is reached from the Cinnabar side (Pallet -> Route 21 -> Cinnabar -> Route 20)

Items - none on this map.

Trainers - four Swimmers, all reachable only by Surf and all beyond the boulders in the FAQ's play order; not part of this section's critical path.

---

MAP_ROUTE_19_FUCHSIA_GATE

• Script: maps/Route19FuchsiaGate.asm
• Header: data/maps/maps.asm:194 -> TILESET_GATE, GATE, LANDMARK_ROUTE_19, MUSIC_ROUTE_3, FALSE, PALETTE_DAY, FISHGROUP_SHORE
• Dimensions: constants/map_constants.asm:178 map_const ROUTE_19_FUCHSIA_GATE, 5, 4 (group CINNABAR, id 3)
• Attributes: data/maps/attributes.asm:512 map_attributes Route19FuchsiaGate, ROUTE_19_FUCHSIA_GATE, $00; no connections

Warps (def_warp_events)

idx	x	y	destination map	dest warp
1	4	0	FUCHSIA_CITY	10
2	5	0	FUCHSIA_CITY	11
3	4	7	ROUTE_19	1
4	5	7	ROUTE_19	1

Coord events - none. BG events - none.

Object events

const	sprite	x	y	movement	type	script label	event flag
ROUTE19FUCHSIAGATE_OFFICER	SPRITE_OFFICER	0	4	SPRITEMOVEDATA_STANDING_RIGHT	OBJECTTYPE_SCRIPT	Route19FuchsiaGateOfficerScript	-1

Scripts of interest

• Route19FuchsiaGateOfficerScript: checkevent EVENT_CINNABAR_ROCKS_CLEARED, two text branches. Pure flavour; the officer does not gate the warp.

---

MAP_VERMILION_CITY

• Script: maps/VermilionCity.asm
• Blocks: maps/VermilionCity.blk
• Header: data/maps/maps.asm:296 -> TILESET_KANTO, TOWN, LANDMARK_VERMILION_CITY, MUSIC_VERMILION_CITY, FALSE, PALETTE_AUTO, FISHGROUP_OCEAN
• Dimensions: constants/map_constants.asm:273 map_const VERMILION_CITY, 20, 18 (group VERMILION, id 3) = 40 x 36 cells
• Attributes: data/maps/attributes.asm:342 map_attributes VermilionCity, VERMILION_CITY, $43
• Connections: connection north, Route6, ROUTE_6, 5; connection east, Route11, ROUTE_11, 0

Warps (def_warp_events)

idx	x	y	destination map	dest warp
1	5	5	VERMILION_FISHING_SPEECH_HOUSE	1
2	9	5	VERMILION_POKECENTER_1F	1
3	7	13	POKEMON_FAN_CLUB	1
4	13	13	VERMILION_MAGNET_TRAIN_SPEECH_HOUSE	1
5	21	13	VERMILION_MART	2
6	21	17	VERMILION_DIGLETTS_CAVE_SPEECH_HOUSE	1
7	10	19	VERMILION_GYM	1
8	19	31	VERMILION_PORT_PASSAGE	1
9	20	31	VERMILION_PORT_PASSAGE	2
10	34	7	DIGLETTS_CAVE	1

Coord events (def_coord_events) - none.

BG events (def_bg_events)

x	y	type	script/item
25	3	BGEVENT_READ	VermilionCitySign
5	19	BGEVENT_READ	VermilionGymSign
5	13	BGEVENT_READ	PokemonFanClubSign
33	9	BGEVENT_READ	VermilionCityDiglettsCaveSign
27	15	BGEVENT_READ	VermilionCityPortSign
10	5	BGEVENT_READ	VermilionCityPokecenterSign (jumpstd PokecenterSignScript)
22	13	BGEVENT_READ	VermilionCityMartSign (jumpstd MartSignScript)
12	19	BGEVENT_ITEM	VermilionCityHiddenFullHeal -> hiddenitem FULL_HEAL, EVENT_VERMILION_CITY_HIDDEN_FULL_HEAL

Object events (def_object_events)

const	sprite	x	y	movement	type	script label	event flag
VERMILIONCITY_TEACHER	SPRITE_TEACHER	18	9	SPRITEMOVEDATA_WANDER (1,1)	OBJECTTYPE_SCRIPT	VermilionCityTeacherScript	-1
VERMILIONCITY_GRAMPS	SPRITE_GRAMPS	23	6	SPRITEMOVEDATA_STANDING_RIGHT	OBJECTTYPE_SCRIPT	VermilionMachopOwner	-1
VERMILIONCITY_MACHOP	SPRITE_MACHOP	26	7	SPRITEMOVEDATA_POKEMON	OBJECTTYPE_SCRIPT	VermilionMachop	-1
VERMILIONCITY_SUPER_NERD	SPRITE_SUPER_NERD	14	16	SPRITEMOVEDATA_WANDER (1,1)	OBJECTTYPE_SCRIPT	VermilionCitySuperNerdScript	-1
VERMILIONCITY_BIG_SNORLAX	SPRITE_BIG_SNORLAX	34	8	SPRITEMOVEDATA_BIGDOLLSYM	OBJECTTYPE_SCRIPT	VermilionSnorlax	EVENT_VERMILION_CITY_SNORLAX
VERMILIONCITY_POKEFAN_M	SPRITE_POKEFAN_M	31	12	SPRITEMOVEDATA_STANDING_DOWN	OBJECTTYPE_SCRIPT	VermilionGymBadgeGuy	-1

Note the object-flag polarity (CheckObjectFlag, engine/overworld/map_objects_2.asm:32): an object with an EVENT_* flag is masked when the flag is set. So the SNORLAX is present only while EVENT_VERMILION_CITY_SNORLAX is clear, and disappear is what sets it.

Scripts of interest

• VermilionSnorlax (4f:5291). opentext -> special SnorlaxAwake -> iftrue .Awake. Asleep branch writes VermilionCitySnorlaxSleepingText and ends. .Awake writes VermilionCityRadioNearSnorlaxText, pause 15, cry SNORLAX, then loadvar VAR_BATTLETYPE, BATTLETYPE_FORCEITEM / loadwildmon SNORLAX, 50 / startbattle / disappear VERMILIONCITY_BIG_SNORLAX / setevent EVENT_FOUGHT_SNORLAX / reloadmapafterbattle. The disappear and setevent run unconditionally after the battle, so a fled-from or fainted Snorlax is still gone: catching it is a one-shot.
• SnorlaxAwake (engine/events/specials.asm:358, symbol 03:45d6). Returns TRUE only when both hold:
  1. [wMapMusic] == MUSIC_POKE_FLUTE_CHANNEL;
  2. the player stands on one of .ProximityCoords (engine/events/specials.asm:399): (33,8) (34,10) (35,10) (36,8) (36,9). The POKe FLUTE channel is the Pokegear radio at knob 78 / "20.0" (engine/pokegear/pokegear.asm:1447, .PokeFluteRadio at 1487): it needs not-Johto and POKEGEAR_EXPN_CARD_F in wPokegearFlags. Tuning the radio and closing the Pokegear leaves that song as wMapMusic.
• VermilionGymBadgeGuy: checkevent EVENT_GOT_HP_UP_FROM_VERMILION_GUY, then readvar VAR_BADGES with ifequal NUM_BADGES / ifgreater 13 / ifgreater 9. verbosegiveitem HP_UP only at all 16 badges. Not this section's business, but a bot walking Vermilion will trip the text.
• VermilionCityFlypointCallback (MAPCALLBACK_NEWMAP): setflag ENGINE_FLYPOINT_VERMILION. This is what makes the FAQ's "fly back to Vermilion City" legal - it must already have been visited on foot.

Flags and events

constant	defined in	read/written by	meaning for a bot
EVENT_VERMILION_CITY_SNORLAX	constants/event_flags.asm:1298	object flag on VERMILIONCITY_BIG_SNORLAX; set by disappear in VermilionSnorlax	clear = Snorlax on the map; set = gone, cave door walkable
EVENT_FOUGHT_SNORLAX	constants/event_flags.asm:1266	set by VermilionSnorlax; read by VermilionPokecenter1FFishingGuruScript (maps/VermilionPokecenter1F.asm:18) and used as the object flag of the right Black Belt in maps/VictoryRoadGate.asm:119	"the Snorlax encounter has happened"
ENGINE_FLYPOINT_VERMILION	constants/engine_flags.asm:72	VermilionCityFlypointCallback	Fly destination unlocked
POKEGEAR_EXPN_CARD_F	constants/ram_constants.asm:280	read by .PokeFluteRadio	without the EXPN CARD the flute channel is static and SnorlaxAwake can never be true
EVENT_VERMILION_CITY_HIDDEN_FULL_HEAL	constants/event_flags.asm:252	VermilionCityHiddenFullHeal	hidden FULL_HEAL at (12,19)

Items

item	how obtained	source (label / bg_event / hidden)	one-time flag
LEFTOVERS	attached to the wild SNORLAX	data/pokemon/base_stats/snorlax.asm:9 db LEFTOVERS, LEFTOVERS forced by BATTLETYPE_FORCEITEM (engine/battle/core.asm:5771)	-
FULL_HEAL	hidden	bg_event 12, 19, BGEVENT_ITEM, VermilionCityHiddenFullHeal	EVENT_VERMILION_CITY_HIDDEN_FULL_HEAL

Wild encounters - the scripted SNORLAX is not a table entry; it is loadwildmon SNORLAX, 50. Level 50 learnset from data/pokemon/evos_attacks.asm:1932: the four most recent are SNORE (36), REST (36), BODY_SLAM (43), ROLLOUT (50) - which is exactly the FAQ's "Rest" and "Rollout". Catch rate 25, base exp 154 (data/pokemon/base_stats/snorlax.asm).

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MAP_VERMILION_POKECENTER_1F

• Script: maps/VermilionPokecenter1F.asm
• Header: data/maps/maps.asm (VERMILION group); dimensions constants/map_constants.asm:275 map_const VERMILION_POKECENTER_1F, 5, 4

Only the one script matters here:

• VermilionPokecenter1FFishingGuruScript: checkevent EVENT_FOUGHT_SNORLAX, two text branches ("A sleeping #MON is lying in front of DIGLETT'S CAVE" -> after-text). It is a read-only confirmation that the Snorlax beat is done; the PC withdraw the FAQ asks for is the standard POKECENTER_2F / PC menu, not a map script.

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MAP_DIGLETTS_CAVE

• Script: maps/DiglettsCave.asm
• Blocks: maps/DiglettsCave.blk (180 bytes = 10 x 18 blocks)
• Header: data/maps/maps.asm:153 -> TILESET_CAVE, CAVE, LANDMARK_DIGLETTS_CAVE, MUSIC_MT_MOON, TRUE (no phone), PALETTE_NITE, FISHGROUP_SHORE
• Dimensions: constants/map_constants.asm:140 map_const DIGLETTS_CAVE, 10, 18 (group DUNGEONS, id 75) = 20 x 36 cells
• Attributes: data/maps/attributes.asm:487 map_attributes DiglettsCave, DIGLETTS_CAVE, $09; no connections

Warps (def_warp_events)

idx	x	y	destination map	dest warp
1	3	33	VERMILION_CITY	10
2	5	31	DIGLETTS_CAVE	5
3	15	5	ROUTE_2	5
4	17	3	DIGLETTS_CAVE	6
5	17	33	DIGLETTS_CAVE	2
6	3	3	DIGLETTS_CAVE	4

Warps 2<->5 and 4<->6 are the two internal ladders. Reading DiglettsCave.blk against data/tilesets/kanto_collision.asm (block $1f/$1b = ladder, $24 = door) the map is three disconnected pockets:

• pocket A (bottom-left, blocks (1,15)-(2,17)): warp 1 (VERMILION door) + warp 2 (ladder);
• pocket B (the long cave): warp 5 at (17,33) up to warp 6 at (3,3);
• pocket C (top-right, blocks (7,1)-(8,3)): warp 4 (ladder) + warp 3 (ROUTE_2 door).

So the traversal is: (3,33) -> ladder (5,31) -> emerge (17,33) -> walk the long cave to (3,3) -> ladder -> emerge (17,3) -> door (15,5) -> Route 2 (12,7). That is exactly the FAQ's "down the ladder, ride up, up that ladder, exit the door".

Coord events - none.

BG events

x	y	type	script/item
6	11	BGEVENT_ITEM	DiglettsCaveHiddenMaxRevive -> hiddenitem MAX_REVIVE, EVENT_DIGLETTS_CAVE_HIDDEN_MAX_REVIVE

Object events

const	sprite	x	y	movement	type	script label	event flag
DIGLETTSCAVE_POKEFAN_M	SPRITE_POKEFAN_M	3	31	SPRITEMOVEDATA_STANDING_DOWN	OBJECTTYPE_SCRIPT	DiglettsCavePokefanMScript	-1

Trainers - none, matching the FAQ.

Items

item	how obtained	source	one-time flag
MAX_REVIVE	hidden (ITEMFINDER / bump)	bg_event 6, 11, BGEVENT_ITEM	EVENT_DIGLETTS_CAVE_HIDDEN_MAX_REVIVE (constants/event_flags.asm:228)

Wild encounters - data/wild/kanto_grass.asm:5 def_grass_wildmons DIGLETTS_CAVE, rates 4 / 2 / 8 percent (morn/day/nite). All three time slots carry the same seven rows:

slot	level	species
1	15	DIGLETT
2	17	DIGLETT
3	19	DIGLETT
4	13	DIGLETT
5	19	DUGTRIO
6	24	DUGTRIO
7	29	DUGTRIO

The FAQ's "capture both Diglett and Dugtrio here" is correct, and night is the best time (8% vs 2% by day).

The FAQ's "ride your bike" is legal here: BikeFunction's .CheckEnvironment (engine/events/overworld.asm:1665) allows outdoor maps, CAVE and GATE.

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MAP_ROUTE_2

• Script: maps/Route2.asm
• Blocks: maps/Route2.blk (270 bytes = 10 x 27 blocks)
• Header: data/maps/maps.asm:455 -> TILESET_KANTO, ROUTE, LANDMARK_ROUTE_2, MUSIC_ROUTE_2, FALSE, PALETTE_AUTO, FISHGROUP_SHORE
• Dimensions: constants/map_constants.asm:421 map_const ROUTE_2, 10, 27 (group VIRIDIAN, id 1) = 20 x 54 cells
• Attributes: data/maps/attributes.asm:255 map_attributes Route2, ROUTE_2, $0f
• Connections: connection north, PewterCity, PEWTER_CITY, -5; connection south, ViridianCity, VIRIDIAN_CITY, -5

Warps (def_warp_events)

idx	x	y	destination map	dest warp
1	15	15	ROUTE_2_NUGGET_HOUSE	1
2	15	31	ROUTE_2_GATE	3
3	16	27	ROUTE_2_GATE	1
4	17	27	ROUTE_2_GATE	2
5	12	7	DIGLETTS_CAVE	3

Coord events - none.

BG events

x	y	type	script/item
7	51	BGEVENT_READ	Route2Sign
11	9	BGEVENT_READ	Route2DiglettsCaveSign
7	23	BGEVENT_ITEM	Route2HiddenMaxEther -> hiddenitem MAX_ETHER, EVENT_ROUTE_2_HIDDEN_MAX_ETHER
4	14	BGEVENT_ITEM	Route2HiddenFullHeal -> hiddenitem FULL_HEAL, EVENT_ROUTE_2_HIDDEN_FULL_HEAL
4	27	BGEVENT_ITEM	Route2HiddenFullRestore -> hiddenitem FULL_RESTORE, EVENT_ROUTE_2_HIDDEN_FULL_RESTORE
11	30	BGEVENT_ITEM	Route2HiddenRevive -> hiddenitem REVIVE, EVENT_ROUTE_2_HIDDEN_REVIVE

Object events

const	sprite	x	y	movement	type	script label	event flag
ROUTE2_BUG_CATCHER1	SPRITE_BUG_CATCHER	10	45	SPRITEMOVEDATA_STANDING_LEFT	OBJECTTYPE_TRAINER (sight 5)	TrainerBugCatcherRob	-1
ROUTE2_BUG_CATCHER2	SPRITE_BUG_CATCHER	5	5	SPRITEMOVEDATA_STANDING_RIGHT (radius 1,0)	OBJECTTYPE_TRAINER (sight 4)	TrainerBugCatcherEd	-1
ROUTE2_BUG_CATCHER3	SPRITE_BUG_CATCHER	4	43	SPRITEMOVEDATA_STANDING_UP (radius 1,0)	OBJECTTYPE_TRAINER (sight 5)	TrainerBugCatcherDoug	-1
ROUTE2_POKE_BALL1	SPRITE_POKE_BALL	0	29	SPRITEMOVEDATA_STILL	OBJECTTYPE_ITEMBALL	Route2DireHit (itemball DIRE_HIT)	EVENT_ROUTE_2_DIRE_HIT
ROUTE2_POKE_BALL2	SPRITE_POKE_BALL	2	23	SPRITEMOVEDATA_STILL	OBJECTTYPE_ITEMBALL	Route2MaxPotion (itemball MAX_POTION)	EVENT_ROUTE_2_MAX_POTION
ROUTE2_POKE_BALL3	SPRITE_POKE_BALL	19	2	SPRITEMOVEDATA_STILL	OBJECTTYPE_ITEMBALL	Route2Carbos (itemball CARBOS)	EVENT_ROUTE_2_CARBOS
ROUTE2_POKE_BALL4	SPRITE_POKE_BALL	14	50	SPRITEMOVEDATA_STILL	OBJECTTYPE_ITEMBALL	Route2Elixer (itemball ELIXER)	EVENT_ROUTE_2_ELIXER
ROUTE2_FRUIT_TREE	SPRITE_FRUIT_TREE	10	14	SPRITEMOVEDATA_STILL	OBJECTTYPE_SCRIPT	Route2FruitTree (fruittree FRUITTREE_ROUTE_2)	-1

Cut trees (not asm rows - decoded from maps/Route2.blk against the CUT_TREE entries of data/tilesets/kanto_collision.asm, which are blocks $00 $32 $33 $34 $35 $60)

block (bx,by)	block id	covered cells (x, y)	which FAQ beat
(2, 4)	$32	4-5, 8-9	near the Diglett's Cave door, not used by the FAQ
(7, 9)	$32	14-15, 18-19	"cut the tree to the south" (just below the Nugget house at (15,15))
(5, 20)	$34	10-11, 40-41	not named by the FAQ
(6, 23)	$34	12-13, 46-47	not named by the FAQ
(6, 25)	$34	12-13, 50-51	"cut the tree just left of it" (immediately left of the Elixer at (14,50))

Scripts of interest

• TrainerBugCatcherRob / TrainerBugCatcherEd / TrainerBugCatcherDoug (4d:5bc2, 4d:5bd6, 4d:5bea): each is the plain trainer CLASS, MEMBER, EVENT_*, seen, beaten, 0, .Script header with an endifjustbattled + after-battle text body. No items, no flags beyond the beaten event.
• Route2FruitTree: fruittree FRUITTREE_ROUTE_2 -> data/items/fruit_trees.asm:28 db PSNCUREBERRY. This is the FAQ's "PSNCure Berry".

Flags and events

constant	defined in	read/written by	meaning for a bot
EVENT_ROUTE_2_DIRE_HIT	constants/event_flags.asm:1318	item ball object flag	clear = ball present
EVENT_ROUTE_2_MAX_POTION	constants/event_flags.asm:1319	item ball object flag	clear = ball present
EVENT_ROUTE_2_CARBOS	constants/event_flags.asm:1320	item ball object flag	clear = ball present
EVENT_ROUTE_2_ELIXER	constants/event_flags.asm:1321	item ball object flag	clear = ball present
EVENT_ROUTE_2_HIDDEN_MAX_ETHER	constants/event_flags.asm:237	Route2HiddenMaxEther	hidden pickup
EVENT_ROUTE_2_HIDDEN_FULL_HEAL	constants/event_flags.asm:238	Route2HiddenFullHeal	hidden pickup
EVENT_ROUTE_2_HIDDEN_FULL_RESTORE	constants/event_flags.asm:239	Route2HiddenFullRestore	hidden pickup
EVENT_ROUTE_2_HIDDEN_REVIVE	constants/event_flags.asm:240	Route2HiddenRevive	hidden pickup
EVENT_BEAT_BUG_CATCHER_ROB	constants/event_flags.asm:840	TrainerBugCatcherRob	trainer beaten
EVENT_BEAT_BUG_CATCHER_ED	constants/event_flags.asm:841	TrainerBugCatcherEd	trainer beaten
EVENT_BEAT_BUG_CATCHER_DOUG	constants/event_flags.asm:850	TrainerBugCatcherDoug	trainer beaten

Items

item	how obtained	source (label / bg_event / hidden)	one-time flag
CARBOS	item ball at (19,2)	Route2Carbos	EVENT_ROUTE_2_CARBOS
MAX_POTION	item ball at (2,23)	Route2MaxPotion	EVENT_ROUTE_2_MAX_POTION
DIRE_HIT	item ball at (0,29)	Route2DireHit	EVENT_ROUTE_2_DIRE_HIT
ELIXER	item ball at (14,50)	Route2Elixer	EVENT_ROUTE_2_ELIXER
PSNCUREBERRY	fruit tree object at (10,14)	FRUITTREE_ROUTE_2, data/items/fruit_trees.asm:28	daily reset, not an event flag
MAX_ETHER	hidden at (7,23)	bg_event	EVENT_ROUTE_2_HIDDEN_MAX_ETHER
FULL_HEAL	hidden at (4,14)	bg_event	EVENT_ROUTE_2_HIDDEN_FULL_HEAL
FULL_RESTORE	hidden at (4,27)	bg_event	EVENT_ROUTE_2_HIDDEN_FULL_RESTORE
REVIVE	hidden at (11,30)	bg_event	EVENT_ROUTE_2_HIDDEN_REVIVE
NUGGET	Route 2 Nugget House NPC	Route2NuggetHouseFisherScript	EVENT_GOT_NUGGET_FROM_GUY

Trainers

const	class	id	party (data/trainers/parties.asm label)	script label	rematch/phone
ROB (constants/trainer_constants.asm:314)	BUG_CATCHER	2	BugCatcherGroup "ROB" (data/trainers/parties.asm:1416): L32 BEEDRILL, L32 BUTTERFREE, TRAINERTYPE_NORMAL	TrainerBugCatcherRob	no
DOUG (constants/trainer_constants.asm:324)	BUG_CATCHER	12	BugCatcherGroup "DOUG" (data/trainers/parties.asm:1482): L34 ARIADOS	TrainerBugCatcherDoug	no
ED (constants/trainer_constants.asm:315)	BUG_CATCHER	3	BugCatcherGroup "ED" (data/trainers/parties.asm:1422): L30 BEEDRILL x3	TrainerBugCatcherEd	no

BUG_CATCHER base reward 4 (data/trainers/attributes.asm:215); prize = base x last mon level (ComputeTrainerReward, engine/battle/read_trainer_party.asm:300).

Wild encounters - data/wild/kanto_grass.asm:259 def_grass_wildmons ROUTE_2, rates 10 / 10 / 10. Gold (IF DEF(_GOLD)):

slot	morn	day	nite
1	L3 CATERPIE	L3 CATERPIE	L3 HOOTHOOT
2	L3 PIDGEY	L3 PIDGEY	L3 SPINARAK
3	L5 METAPOD	L5 METAPOD	L5 HOOTHOOT
4	L7 BUTTERFREE	L7 PIDGEY	L7 NOCTOWL
5	L7 PIDGEOTTO	L7 PIDGEOTTO	L7 ARIADOS
6	L4 PIKACHU	L4 PIKACHU	L4 PIKACHU
7	L4 PIKACHU	L4 PIKACHU	L4 PIKACHU

(The Silver table under ELIF DEF(_SILVER) swaps the Caterpie line for Weedle/Kakuna/Beedrill and Spinarak for Ledyba.)

---

MAP_ROUTE_2_NUGGET_HOUSE

• Script: maps/Route2NuggetHouse.asm
• Header: data/maps/maps.asm:465 -> TILESET_HOUSE, INDOOR, LANDMARK_ROUTE_2, MUSIC_VIRIDIAN_CITY, FALSE, PALETTE_DAY, FISHGROUP_SHORE
• Dimensions: constants/map_constants.asm:431 map_const ROUTE_2_NUGGET_HOUSE, 4, 4
• Attributes: data/maps/attributes.asm:664; no connections

Warps

idx	x	y	destination map	dest warp
1	2	7	ROUTE_2	1
2	3	7	ROUTE_2	1

Coord events - none. BG events - none.

Object events

const	sprite	x	y	movement	type	script label	event flag
ROUTE2NUGGETHOUSE_FISHER	SPRITE_FISHER	2	4	SPRITEMOVEDATA_WALK_UP_DOWN (radius 0,2)	OBJECTTYPE_SCRIPT	Route2NuggetHouseFisherScript	-1

Scripts of interest

• Route2NuggetHouseFisherScript (5f:4e26): faceplayer / opentext / checkevent EVENT_GOT_NUGGET_FROM_GUY -> .GotNugget; otherwise text, promptbutton, verbosegiveitem NUGGET, iffalse .NoRoom, setevent EVENT_GOT_NUGGET_FROM_GUY. A full bag skips the flag, so the gift is re-offerable.

Flags and events

constant	defined in	read/written by	meaning for a bot
EVENT_GOT_NUGGET_FROM_GUY	constants/event_flags.asm:199	Route2NuggetHouseFisherScript	one-time NUGGET

---

MAP_ROUTE_2_GATE

• Script: maps/Route2Gate.asm
• Header: data/maps/maps.asm:466 -> TILESET_GATE, GATE, LANDMARK_ROUTE_2, MUSIC_ROUTE_2, FALSE, PALETTE_DAY, FISHGROUP_SHORE
• Dimensions: constants/map_constants.asm:432 map_const ROUTE_2_GATE, 5, 4
• Attributes: data/maps/attributes.asm:665; no connections

Warps

idx	x	y	destination map	dest warp
1	4	0	ROUTE_2	3
2	5	0	ROUTE_2	4
3	4	7	ROUTE_2	2
4	5	7	ROUTE_2	2

Both sides land back on Route 2 - this is the FAQ's "route-changing house... You'll still be in Route 2". North side (y=0) <-> Route 2 (16,27)/(17,27); south side (y=7) <-> Route 2 (15,31).

Coord events - none. BG events - none.

Object events

const	sprite	x	y	movement	type	script label	event flag
ROUTE2GATE_SCIENTIST	SPRITE_SCIENTIST	6	4	SPRITEMOVEDATA_WALK_UP_DOWN (radius 0,2)	OBJECTTYPE_SCRIPT	Route2GateScientistScript	-1

Route2GateScientistScript is jumptextfaceplayer only (Oak's aide flavour).

---

MAP_PEWTER_CITY

• Script: maps/PewterCity.asm
• Blocks: maps/PewterCity.blk
• Header: data/maps/maps.asm:322 -> TILESET_KANTO, TOWN, LANDMARK_PEWTER_CITY, MUSIC_VIRIDIAN_CITY, FALSE, PALETTE_AUTO, FISHGROUP_SHORE
• Dimensions: constants/map_constants.asm:297 map_const PEWTER_CITY, 20, 18 (group PEWTER, id 2) = 40 x 36 cells
• Attributes: data/maps/attributes.asm:251 map_attributes PewterCity, PEWTER_CITY, $0f
• Connections: connection south, Route2, ROUTE_2, 5; connection east, Route3, ROUTE_3, 5

Warps (def_warp_events)

idx	x	y	destination map	dest warp
1	29	13	PEWTER_NIDORAN_SPEECH_HOUSE	1
2	16	17	PEWTER_GYM	1
3	23	17	PEWTER_MART	2
4	13	25	PEWTER_POKECENTER_1F	1
5	7	29	PEWTER_SNOOZE_SPEECH_HOUSE	1

There is no museum warp: the FAQ's "they even filled the doorway in" is literally true in the asm - the museum exists only as a sign.

Coord events - none.

BG events

x	y	type	script/item
25	23	BGEVENT_READ	PewterCitySign
11	17	BGEVENT_READ	PewterGymSign
15	9	BGEVENT_READ	PewterMuseumSign ("closed for renovations")
33	19	BGEVENT_READ	PewterCityMtMoonGiftShopSign
19	29	BGEVENT_READ	PewterCityWelcomeSign
14	25	BGEVENT_READ	PewterCityPokecenterSign (jumpstd PokecenterSignScript)
24	17	BGEVENT_READ	PewterCityMartSign (jumpstd MartSignScript)

No hidden items in Pewter City.

Object events

const	sprite	x	y	movement	type	script label	event flag
PEWTERCITY_COOLTRAINER_F	SPRITE_COOLTRAINER_F	19	11	SPRITEMOVEDATA_WANDER (2,2)	OBJECTTYPE_SCRIPT	PewterCityCooltrainerFScript	-1
PEWTERCITY_BUG_CATCHER	SPRITE_BUG_CATCHER	14	29	SPRITEMOVEDATA_WANDER (2,2)	OBJECTTYPE_SCRIPT	PewterCityBugCatcherScript	-1
PEWTERCITY_GRAMPS	SPRITE_GRAMPS	29	17	SPRITEMOVEDATA_WALK_LEFT_RIGHT (radius 2,0)	OBJECTTYPE_SCRIPT	PewterCityGrampsScript	-1
PEWTERCITY_FRUIT_TREE1	SPRITE_FRUIT_TREE	32	3	SPRITEMOVEDATA_STILL	OBJECTTYPE_SCRIPT	PewterCityFruitTree1 (fruittree FRUITTREE_PEWTER_CITY_1)	-1
PEWTERCITY_FRUIT_TREE2	SPRITE_FRUIT_TREE	30	3	SPRITEMOVEDATA_STILL	OBJECTTYPE_SCRIPT	PewterCityFruitTree2 (fruittree FRUITTREE_PEWTER_CITY_2)	-1

Scripts of interest

• PewterCityGrampsScript (4d:583e). faceplayer / opentext / checkver / iftrue .RainbowWing. checkver leaves GS_VERSION in wScriptVar (0 = Gold, 1 = Silver), so:
  • Gold: checkevent EVENT_GOT_SILVER_WING -> .GotSilverWing; otherwise text, promptbutton, verbosegiveitem SILVER_WING, setevent EVENT_GOT_SILVER_WING. Note there is no iffalse guard on this verbosegiveitem: the flag is set whether or not the bag had room.
  • Silver: checkevent EVENT_GOT_RAINBOW_WING -> .GotSilverWing; otherwise verbosegiveitem RAINBOW_WING, setevent EVENT_GOT_RAINBOW_WING, setevent EVENT_TEAM_ROCKET_DISBANDED. This gramps is the second source for the wing pair: the Radio Tower director (maps/RadioTower5F.asm:120-140) gives the opposite one on the same checkver split.
• PewterCityFlypointCallback (MAPCALLBACK_NEWMAP): setflag ENGINE_FLYPOINT_PEWTER.

Flags and events

constant	defined in	read/written by	meaning for a bot
EVENT_GOT_SILVER_WING	constants/event_flags.asm:130	Gold branch of PewterCityGrampsScript; also maps/RadioTower5F.asm:139 (Silver)	one-time
EVENT_GOT_RAINBOW_WING	constants/event_flags.asm:129	Silver branch of PewterCityGrampsScript; also maps/RadioTower5F.asm:129 (Gold); read by maps/EcruteakTinTowerEntrance.asm:62	one-time; gates Tin Tower entry
EVENT_TEAM_ROCKET_DISBANDED	constants/event_flags.asm:1283	set by the Silver branch here	side effect of the Rainbow Wing gift
ENGINE_FLYPOINT_PEWTER	constants/engine_flags.asm:69	PewterCityFlypointCallback	Fly destination

Items

item	how obtained	source	one-time flag
SILVER_WING (Gold) / RAINBOW_WING (Silver)	talk to PEWTERCITY_GRAMPS at (29,17)	PewterCityGrampsScript	EVENT_GOT_SILVER_WING / EVENT_GOT_RAINBOW_WING
ICE_BERRY	fruit tree at (32,3)	FRUITTREE_PEWTER_CITY_1, data/items/fruit_trees.asm:31	daily
MINT_BERRY	fruit tree at (30,3)	FRUITTREE_PEWTER_CITY_2, data/items/fruit_trees.asm:32	daily

Wild encounters - none (TOWN, no grass table).

---

MAP_PEWTER_POKECENTER_1F

• Script: maps/PewterPokecenter1F.asm
• Header: data/maps/maps.asm:326 -> TILESET_POKECENTER, INDOOR, LANDMARK_PEWTER_CITY, MUSIC_POKEMON_CENTER, FALSE, PALETTE_DAY, FISHGROUP_SHORE
• Dimensions: constants/map_constants.asm:301 map_const PEWTER_POKECENTER_1F, 5, 4
• Attributes: data/maps/attributes.asm:583

Warps

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

Coord events - none. BG events - none.

Object events

const	sprite	x	y	movement	type	script label	event flag
PEWTERPOKECENTER1F_NURSE	SPRITE_NURSE	3	1	SPRITEMOVEDATA_STANDING_DOWN	OBJECTTYPE_SCRIPT	PewterPokecenter1FNurseScript (jumpstd PokecenterNurseScript)	-1
PEWTERPOKECENTER1F_TEACHER	SPRITE_TEACHER	8	6	SPRITEMOVEDATA_STANDING_DOWN	OBJECTTYPE_SCRIPT	PewterPokecenter1FTeacherScript	-1
PEWTERPOKECENTER1F_JIGGLYPUFF	SPRITE_JIGGLYPUFF	1	3	SPRITEMOVEDATA_POKEMON	OBJECTTYPE_SCRIPT	PewterJigglypuff	-1
PEWTERPOKECENTER1F_BUG_CATCHER	SPRITE_BUG_CATCHER	2	3	SPRITEMOVEDATA_STANDING_DOWN	OBJECTTYPE_SCRIPT	PewterPokecenter1FBugCatcherScript	-1
PEWTERPOKECENTER1F_CHRIS	SPRITE_POKEFAN_M	7	2	SPRITEMOVEDATA_STANDING_DOWN	OBJECTTYPE_SCRIPT	Chris	-1

Scripts of interest

• Chris (5a:46f5): faceplayer / opentext / trade NPC_TRADE_CHRIS / waitbutton / closetext / end. The trade row is data/events/npc_trades.asm:18: npctrade TRADE_DIALOGSET_HAPPY, GLOOM, RAPIDASH, "RUNNY", $96, $66, BURNT_BERRY, 15616, "CHRIS", TRADE_GENDER_EITHER - the player gives GLOOM and receives a RAPIDASH nicknamed RUNNY, DVs $96/$66, holding a BURNT_BERRY, OT "CHRIS" ID 15616. The FAQ's "trade a Gloom for a Rapidash" is exact. Note the NPC sprite is SPRITE_POKEFAN_M, not a lady.

---

MAP_PEWTER_GYM

• Script: maps/PewterGym.asm
• Blocks: maps/PewterGym.blk
• Header: data/maps/maps.asm:324 -> TILESET_TOWER, INDOOR, LANDMARK_PEWTER_CITY, MUSIC_GYM, TRUE (no phone), PALETTE_DAY, FISHGROUP_SHORE
• Dimensions: constants/map_constants.asm:299 map_const PEWTER_GYM, 5, 7 (group PEWTER, id 4) = 10 x 14 cells
• Attributes: data/maps/attributes.asm:581 map_attributes PewterGym, PEWTER_GYM, $00; no connections

Warps (def_warp_events)

idx	x	y	destination map	dest warp
1	4	13	PEWTER_CITY	2
2	5	13	PEWTER_CITY	2

Coord events - none. There is no lock-in trip-wire in this gym.

BG events

x	y	type	script/item
2	11	BGEVENT_READ	PewterGymStatue
7	11	BGEVENT_READ	PewterGymStatue

Object events

const	sprite	x	y	movement	type	script label	event flag
PEWTERGYM_BROCK	SPRITE_BROCK	5	1	SPRITEMOVEDATA_STANDING_DOWN	OBJECTTYPE_SCRIPT	PewterGymBrockScript	-1
PEWTERGYM_YOUNGSTER	SPRITE_YOUNGSTER	2	5	SPRITEMOVEDATA_STANDING_RIGHT	OBJECTTYPE_TRAINER (sight 3)	TrainerCamperJerry	-1
PEWTERGYM_GYM_GUIDE	SPRITE_GYM_GUIDE	6	11	SPRITEMOVEDATA_STANDING_DOWN	OBJECTTYPE_SCRIPT (sight 1)	PewterGymGuideScript	-1

Scripts of interest

• PewterGymBrockScript (5a:405f). faceplayer / opentext / checkflag ENGINE_BOULDERBADGE / iftrue .FightDone. Otherwise: writetext BrockIntroText, waitbutton, closetext, winlosstext BrockWinLossText, 0, loadtrainer BROCK, BROCK1, startbattle, reloadmapafterbattle, setevent EVENT_BEAT_BROCK, setevent EVENT_BEAT_CAMPER_JERRY, then opentext / writetext ReceivedBoulderBadgeText / playsound SFX_GET_BADGE / waitsfx / setflag ENGINE_BOULDERBADGE / writetext BrockBoulderBadgeText / waitbutton / closetext / end. Two consequences for a bot: (1) Camper Jerry is optional - beating Brock marks him beaten; (2) the badge is a setflag on the ENGINE namespace, not an EVENT_*.
• TrainerCamperJerry (5a:4093): standard trainer CAMPER, JERRY, EVENT_BEAT_CAMPER_JERRY, ... header, sight range 3 facing right from (2,5).
• PewterGymGuideScript: checkevent EVENT_BEAT_BROCK, two text branches.
• PewterGymStatue: checkflag ENGINE_BOULDERBADGE; unbeaten -> jumpstd GymStatue1Script, beaten -> gettrainername STRING_BUFFER_4, BROCK, BROCK1 then jumpstd GymStatue2Script.

Flags and events

constant	defined in	read/written by	meaning for a bot
ENGINE_BOULDERBADGE	constants/engine_flags.asm:47 (row data/events/engine_flags.asm, backed by wKantoBadges)	checked and set by PewterGymBrockScript; checked by PewterGymStatue	the gym's own re-entry guard, and the ROCK-type damage boost via BadgeTypeBoosts
EVENT_BEAT_BROCK	constants/event_flags.asm:715	set by PewterGymBrockScript; read by PewterGymGuideScript	gym cleared
EVENT_BEAT_CAMPER_JERRY	constants/event_flags.asm:545	TrainerCamperJerry, and also set by PewterGymBrockScript	trainer beaten / skipped

Trainers

const	class	id	party (data/trainers/parties.asm label)	script label	rematch/phone
JERRY (constants/trainer_constants.asm:566)	CAMPER	18	CamperGroup "JERRY" (data/trainers/parties.asm:2811): L37 SANDSLASH, TRAINERTYPE_NORMAL	TrainerCamperJerry	no
BROCK1 (constants/trainer_constants.asm:91, class BROCK = 11 at line 90)	BROCK	1	BrockGroup (data/trainers/parties.asm:270, symbol 0e:5cda), TRAINERTYPE_MOVES	PewterGymBrockScript	no phone

BrockGroup party, in asm order:

#	level	species	moves
1	41	GRAVELER	DEFENSE_CURL, ROCK_SLIDE, ROLLOUT, EARTHQUAKE
2	41	RHYHORN	FURY_ATTACK, SCARY_FACE, EARTHQUAKE, HORN_DRILL
3	42	OMASTAR	BITE, SURF, PROTECT, SPIKE_CANNON
4	44	ONIX	BIND, ROCK_SLIDE, BIDE, SANDSTORM
5	42	KABUTOPS	SLASH, SURF, ENDURE, GIGA_DRAIN

Class attributes (data/trainers/attributes.asm:101): item1 HYPER_POTION, base reward 25, AI AI_BASIC | AI_SETUP | AI_SMART | AI_AGGRESSIVE | AI_CAUTIOUS | AI_STATUS | AI_RISKY, CONTEXT_USE | SWITCH_SOMETIMES. Camper base reward 5 (data/trainers/attributes.asm:323).

Wild encounters - none.

---

3. Blockers and gates

Gate	Enforced by (file:label)	Requirement	Unlock condition
Route 19 boulders	maps/Route19.asm:Route19ClearRocksCallback (4e:4f09), six changeblock ... $7a writes under callback MAPCALLBACK_TILES	EVENT_CINNABAR_ROCKS_CLEARED	Set only by maps/Route20.asm:Route20ClearRocksCallback (MAPCALLBACK_NEWMAP) - i.e. by reaching Route 20 from the Cinnabar side. Nothing in this section can clear it; the FAQ is right that you must turn around.
SNORLAX blocking the DIGLETT'S CAVE door	maps/VermilionCity.asm object at (34,8) with a SPRITEMOVEDATA_BIGDOLLSYM 2x2 footprint sitting directly under warp 10 at (34,7)	EVENT_VERMILION_CITY_SNORLAX clear = present	disappear VERMILIONCITY_BIG_SNORLAX at the end of VermilionSnorlax, which only runs after startbattle
SNORLAX will not wake	engine/events/specials.asm:358 SnorlaxAwake	wMapMusic == MUSIC_POKE_FLUTE_CHANNEL and player on one of (33,8), (34,10), (35,10), (36,8), (36,9)	Pokegear radio tuned to knob 78 / "20.0"
POKe FLUTE radio channel is static	engine/pokegear/pokegear.asm:1487 .PokeFluteRadio	not in Johto (.InJohto, landmark >= KANTO_LANDMARK) and POKEGEAR_EXPN_CARD_F set in wPokegearFlags	EXPN CARD, obtained earlier (Lavender radio director)
Route 2 cut trees	tileset collision COLL_CUT_TREE (constants/collision_constants.asm:16), tested by CheckCutCollision (engine/overworld/tile_events.asm:76)	HM01 CUT + ENGINE_HIVEBADGE (engine/events/overworld.asm:133 CutFunction.CheckAble)	already held long before this section
Diglett's Cave traversal	maps/DiglettsCave.blk geometry - the three pockets are joined only by warps 2<->5 and 6<->4	none beyond walking	-
Pewter Gym re-fight	maps/PewterGym.asm:PewterGymBrockScript checkflag ENGINE_BOULDERBADGE / iftrue .FightDone	badge not yet held	one-shot
Pewter museum	no warp exists in PewterCity_MapEvents; only bg_event 15, 9 PewterMuseumSign	-	permanently closed in GS

---

4. Bot checklist

Coordinates are asm cell coordinates. "clear" / "set" refer to event flags.

1. ROUTE_19_FUCHSIA_GATE -> ROUTE_19: walk warp 3/4 at (4,7)/(5,7). Precondition: none. Expect to be stopped; EVENT_CINNABAR_ROCKS_CLEARED is clear, so blocks (6,6) (8,6) (10,6) (12,8) (4,8) (10,10) are rock. Turn around through warp 1 at (7,3).
2. FLY to VERMILION_CITY. Precondition: ENGINE_FLYPOINT_VERMILION set.
3. Open the Pokegear, RADIO card, tune the knob to 78 ("20.0"). Precondition: POKEGEAR_EXPN_CARD_F set and the landmark is Kanto. Postcondition: wMapMusic == MUSIC_POKE_FLUTE_CHANNEL.
4. Close the Pokegear and walk to one of (33,8) / (34,10) / (35,10) / (36,8) / (36,9). Face VERMILIONCITY_BIG_SNORLAX at (34,8) and press A. Precondition: EVENT_VERMILION_CITY_SNORLAX clear. Effect: SnorlaxAwake returns TRUE -> wild L50 SNORLAX with LEFTOVERS forced.
5. Battle: catch or defeat. Either way, postcondition EVENT_VERMILION_CITY_SNORLAX set (object removed) and EVENT_FOUGHT_SNORLAX set. Save before step 4 - a failed catch is not repeatable.
6. Optional: VERMILION_CITY warp 2 at (9,5) -> VERMILION_POKECENTER_1F, heal and withdraw SNORLAX; back out warps 1/2 at (3,7)/(4,7).
7. VERMILION_CITY warp 10 at (34,7) -> DIGLETTS_CAVE warp 1 at (3,33).
8. DIGLETTS_CAVE: walk (3,33) -> (5,31) (warp 2, ladder). Land at (17,33).
9. Walk the long cave (17,33) -> (3,3) (warp 6, ladder). Land at (17,3). Optional en route: hidden MAX_REVIVE at (6,11), flag EVENT_DIGLETTS_CAVE_HIDDEN_MAX_REVIVE.
10. Walk (17,3) -> (15,5) (warp 3, door) -> ROUTE_2 warp 5 at (12,7).
11. ROUTE_2: item ball ROUTE2_POKE_BALL3 at (19,2) = CARBOS. Precondition EVENT_ROUTE_2_CARBOS clear; postcondition set.
12. Warp 1 at (15,15) -> ROUTE_2_NUGGET_HOUSE. Talk to ROUTE2NUGGETHOUSE_FISHER at (2,4). Precondition EVENT_GOT_NUGGET_FROM_GUY clear and >=1 bag slot; postcondition set, NUGGET in bag. Exit warps 1/2 at (2,7)/(3,7).
13. Optional: fruit tree ROUTE2_FRUIT_TREE at (10,14) = PSNCUREBERRY (daily).
14. CUT the tree covering cells (14-15, 18-19). Precondition: HM01 in bag and ENGINE_HIVEBADGE set.
15. Warp 3/4 at (16,27)/(17,27) -> ROUTE_2_GATE -> warps 3/4 at (4,7)/(5,7) -> ROUTE_2 warp 2 at (15,31). Still Route 2.
16. Item ball ROUTE2_POKE_BALL4 at (14,50) = ELIXER. Flag EVENT_ROUTE_2_ELIXER.
17. CUT the tree covering cells (12-13, 50-51), then head north.
18. Battle TrainerBugCatcherRob - object at (10,45), facing left, sight 5. Party L32 BEEDRILL / L32 BUTTERFREE. Postcondition EVENT_BEAT_BUG_CATCHER_ROB.
19. Battle TrainerBugCatcherDoug - object at (4,43), facing up, sight 5. Party L34 ARIADOS. Postcondition EVENT_BEAT_BUG_CATCHER_DOUG.
20. Optional pickups on the way north: item ball at (0,29) = DIRE_HIT (EVENT_ROUTE_2_DIRE_HIT); item ball at (2,23) = MAX_POTION (EVENT_ROUTE_2_MAX_POTION); hidden MAX_ETHER at (7,23), hidden FULL_HEAL at (4,14), hidden FULL_RESTORE at (4,27), hidden REVIVE at (11,30).
21. Battle TrainerBugCatcherEd - object at (5,5), facing right, sight 4. Party L30 BEEDRILL x3. Postcondition EVENT_BEAT_BUG_CATCHER_ED.
22. Walk off the north edge of ROUTE_2 into PEWTER_CITY (connection north, PewterCity, PEWTER_CITY, -5). Postcondition ENGINE_FLYPOINT_PEWTER set by PewterCityFlypointCallback.
23. Talk to PEWTERCITY_GRAMPS at (29,17) (he paces x 27..31 on y=17). Precondition EVENT_GOT_SILVER_WING clear (Gold). Postcondition: SILVER_WING in bag, EVENT_GOT_SILVER_WING set. On Silver: RAINBOW_WING, EVENT_GOT_RAINBOW_WING and EVENT_TEAM_ROCKET_DISBANDED set.
24. Optional: warp 4 at (13,25) -> PEWTER_POKECENTER_1F. Heal at PEWTERPOKECENTER1F_NURSE (3,1). Talk to Chris at (7,2) to trade a GLOOM for RAPIDASH "RUNNY". Optional: fruit trees at (32,3) = ICE_BERRY and (30,3) = MINT_BERRY.
25. PEWTER_CITY warp 2 at (16,17) -> PEWTER_GYM (arrive at warp 1, (4,13)).
26. Optional: battle TrainerCamperJerry, object at (2,5), facing right, sight 3. L37 SANDSLASH.
27. Talk to PEWTERGYM_BROCK at (5,1). Precondition ENGINE_BOULDERBADGE clear. Battle loadtrainer BROCK, BROCK1 (5 mon, L41-44). Postconditions: EVENT_BEAT_BROCK, EVENT_BEAT_CAMPER_JERRY, ENGINE_BOULDERBADGE.
28. Exit warps 1/2 at (4,13)/(5,13) -> PEWTER_CITY warp 2; heal.

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5. Port coverage

Beat	Port file	Status
All maps / warps / objects / bg events for this section	src/import/RomExtractorGen2.lua (MAP_GROUP_COUNT = 26, line 47; the group walk at line 527)	implemented - every Kanto group is extracted, so these maps are data, not hand-ported code
MAPCALLBACK_TILES + changeblock (Route 19 boulders)	src/script/gen2/Opcodes.lua:127 (changeblock), driver tests/drivers/gold_map_callbacks.lua	implemented
special SnorlaxAwake	src/script/gen2/Specials.lua:1562 H.SnorlaxAwake, with Specials.SNORLAX_PROXIMITY transcribing .ProximityCoords and Specials.POKE_FLUTE_SONG = "Music_PokeFluteChannel"; hooks currentMusic / playerCell at src/world/gen2/World.lua:2712 and :2723	implemented
POKe FLUTE radio channel (knob 78 / 20.0) + EXPN CARD gate	src/ui/gen2/Pokegear.lua:812-815 (the knob = 78 row, ctx.inJohto / ctx.expnCard)	implemented
BATTLETYPE_FORCEITEM -> Snorlax holds LEFTOVERS	src/world/gen2/World.lua:111 and :4576	implemented
loadwildmon / startbattle / reloadmapafterbattle / disappear	src/script/gen2/Vm.lua:806-841	implemented
Catching a wild mon (Ultra Balls on Snorlax)	src/battle/gen2/Catching.lua	implemented
Trainer battles from OBJECTTYPE_TRAINER rows (Rob / Doug / Ed / Jerry)	src/world/gen2/Trainers.lua, src/script/gen2/Vm.lua:806 (loadtrainer)	implemented
Gym leader script shape (checkflag/winlosstext/setflag ENGINE_BOULDERBADGE)	src/script/gen2/Vm.lua:208 (setflag/clearflag), src/world/gen2/World.lua:1296-1340 (engineFlags)	implemented
BadgeTypeBoosts - BOULDERBADGE boosting ROCK moves (data/types/badge_type_boosts.asm, engine/battle/misc.asm:146 DoBadgeTypeBoosts)	no match anywhere in src/battle/gen2/	missing (the Gen 1 port has its own badge table in src/battle/Damage.lua:28, but nothing in the Gen 2 battle path reads badges)
Item ball pickup (Route 2 CARBOS / DIRE_HIT / ELIXER / MAX_POTION)	extracted into obj.itemball at src/import/RomExtractorGen2.lua:2874 and :2968, but no consumer exists in src/world/gen2/; src/script/gen2/CallAsm.lua:550 stubs TryReceiveItem with "wItemBallItemID / wItemBallQuantity are set by a script path this port does not run"	missing
Hidden items (Diglett's Cave MAX_REVIVE, the four Route 2 hidden items, Vermilion FULL_HEAL)	src/world/gen2/HiddenItems.lua, wired at src/world/gen2/World.lua:5291 and the ITEMFINDER path at :3423	implemented
verbosegiveitem (NUGGET, SILVER_WING/RAINBOW_WING)	src/script/gen2/Opcodes.lua:163, src/script/gen2/Vm.lua:501 / :1201	implemented
fruittree (PSNCUREBERRY, ICE_BERRY, MINT_BERRY)	src/script/gen2/Opcodes.lua:160, src/world/gen2/World.lua:1058 (fruitTreeItem)	implemented
trade NPC_TRADE_CHRIS (GLOOM -> RAPIDASH)	src/core/gen2/NpcTrade.lua, src/script/gen2/Opcodes.lua:155	implemented
checkver Gold/Silver split in PewterCityGrampsScript	src/script/gen2/Vm.lua:774, src/world/gen2/World.lua:1287 (gsVersion)	implemented
setflag ENGINE_FLYPOINT_PEWTER / _VERMILION and Fly	src/world/gen2/World.lua:5628	implemented
CUT field move + HIVEBADGE check	src/world/gen2/FieldMoves.lua (badge table at lines 100-101)	implemented
Bike allowed in CAVE (Diglett's Cave)	src/world/gen2/Bike.lua	partial - the file exists and comments the hiddenitem/BICYCLE interaction, but the .CheckEnvironment outdoor/CAVE/GATE test was not located; verify before relying on it
gettrainername for the beaten-gym statue	src/script/gen2/Vm.lua:407	implemented

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6. Unresolved / verify by hand

• Brock's party order. The FAQ lists Graveler, Omastar, Rhyhorn, Onix, Kabutops. data/trainers/parties.asm:270 BrockGroup is Graveler (41), Rhyhorn (41), Omastar (42), Onix (44), Kabutops (42) - slots 2 and 3 are swapped relative to the FAQ. Levels and species set match.
• All the FAQ's prize money figures are exactly 4x the asm value. ComputeTrainerReward (engine/battle/read_trainer_party.asm:300) is base reward x last mon level, with no multiplier. Brock 25 x 42 = 1050 (FAQ says 4,200); Rob 4 x 32 = 128 (FAQ 512); Doug 4 x 34 = 136 (FAQ 544); Ed 4 x 30 = 120 (FAQ 480); Jerry 5 x 37 = 185 (FAQ 740). The FAQ's EXP figures likewise do not come from GS. Treat the money/EXP numbers in this section as belonging to a different game (most likely HeartGold/SoulSilver, which the text references) and ignore them for a GS bot.
• "Viridian Forest". The FAQ says the Max Potion is "in Viridian Forest". There is no Viridian Forest map in constants/map_constants.asm; the MAX_POTION is ROUTE2_POKE_BALL2 at (2,23) on ROUTE_2, in the area the forest used to occupy.
• "the man just to the right of the Pokemart". PEWTERCITY_GRAMPS spawns at (29,17) with a WALK_LEFT_RIGHT radius of 2 (so x 27..31); the mart door is warp 3 at (23,17). He is to the right of the mart but not adjacent.
• "The Pokemon Center has a lady". The trade NPC is Chris, sprite SPRITE_POKEFAN_M at (7,2). Male sprite, name CHRIS.
• Which cut tree the FAQ means. The two trees named in step 14 and step 17 above are inferred from the block dump of maps/Route2.blk plus the item/warp positions; they are not labelled anywhere in asm. Three other CUT_TREE blocks exist on Route 2 (see the cut-tree table) and one of those may be the intended route instead. Verify with a real walk.
• Diglett's Cave pocket connectivity. The three-pocket reading is derived by hand from maps/DiglettsCave.blk block ids against data/tilesets/kanto_collision.asm; the per-tile collision of the "long cave" interior was not fully traced, only that every warp block is reachable within its pocket. The FAQ's described route is consistent with it.
• "the route is cleared to Diglett's Cave and through Route 8". Nothing in maps/VermilionCity.asm or maps/Route11.asm gates Route 11 / Route 8 on the Snorlax; the only thing EVENT_FOUGHT_SNORLAX unlocks outside Vermilion is the right-hand Black Belt object in maps/VictoryRoadGate.asm:119. The Snorlax blocks only the Diglett's Cave door tile at (34,7).
• "Keep around those four Ultra Balls" and the Rest/Thunder Wave catch advice are strategy, not asm; nothing enforces a ball count.
• src/world/gen2/Bike.lua CAVE permission. Marked partial in section 5 - the port file was read but the equivalent of BikeFunction.CheckEnvironment (engine/events/overworld.asm:1665) was not located, so "you can bike through Diglett's Cave in the port" is unverified.