Tomb of the Unknown King
The whole maze runs on one byte. var486 stores which corridor you are in and which way the camera faces, and five reused backgrounds draw all 77 positions. Every exit script is a long if var486 == N table that writes the next value and jumps to the field that draws it. Progress through the tomb lives in var491, with var485 for the two one-time scenes.
Which field loads which
Arrows are MAPJUMP3 calls and .inf gateways; labels show what the jump writes to var486. Red marks a condition that can block the way. Thumbnails are the real backgrounds rebuilt from the .mim/.map files.
What has to happen, in order
Arrive outside the tomb
gnview1 · DirectorLoading gnview1 sets var486 = 0. On the first visit two Garden students run past (“F-Float!”) and the scene sets var485 |= 0xD5 (bits 1, 4, 16, 64, 128); the students only exist while
(var485 & 469) == 0. Draw point #38 (Protect) and a normal save point stand here. The gateway leads into gnroad1.Optional: map and location displayer
every corridor and room · mapdisplay::defaultvar730 & 32 (map) lets the map key open the dungeon map; var730 & 64 (location displayer) adds the “you are here” mark, picked from a table of var486 values. With the map open, a second key offers Escape from the dungeon?:
ADDSEEDLEVEL(-100)(one SeeD rank) and MAPJUMP3 to gnview1. Both bits are set outside the tomb.Room 1 (west): drive off Sacred
gnroom1 · battleline::touchOnThe statue talks, then
BATTLE(189). Afterwards var491 |= 2. That one bit removes the battle line, lowers the plinth, shows the save point (only with Siren's Move-Find, var88) and sinks the two inscribed stone slabs that block the corridors to rooms 2 and 3 (gnroad1 states 30 and 62, walkmesh triangles 79/82/85 locked).Room 2 (south): open the water channel
gnroom2 · WaterRun::talk → party gimmickPulling the lever sets var491 |= 4. The water starts flowing, and ripples show in front of the central building (gnroad5). Draw point #39 (Float).
Room 3 (east): turn the gearwheel
gnroom3 · gearwheel::talkSets var491 |= 8. Draw point #40 (Cura) and a Move-Find save point. Rooms 2 and 3 can be done in either order.
Centre: the bridge
gnroad5 · Director, hasi::defaultWalkmesh triangles 37 and 39 (the bridge) are locked on every load. They unlock only if var491 & 4 and var491 & 8 are both set and you came down the north approach (var486 == 16) or are walking back out of room 4 (var84 == 791). The east, south and west approaches (32, 52, 38) only ever show the building's side or back.
Room 4: Sacred and Minotaur
gnroom4 · battleline::touchOn, ArcTop::openBATTLE(190), then var491 |= 16, var485 |= 2 (brothers removed for good, battle line off, walkmesh 99/112/115/131 unlocked),MENUNAME(7)to name Brothers, andGETCARD(87)Minotaur card. The arc opens and the sealed one speaks: var491 |= 32. No script reads bits 16 or 32.Leave
gnroom4 gateway → gnroad5Room 4 sets var486 = 76 on load and its gateway always returns to gnroad5. From 76, walking back writes 72: the north junction (mark 7), facing north. From there the maze is walked in reverse to gnroad1 state 6 and out.
Every var486 state, on the in-game map
Positions come from the scripts' own mark::onN entries (the location displayer's offsets). Pick a dot, then click an exit on the field picture to move. The exit labels are drawn where each mapjump_* SETLINE projects through the field camera.
Seeing the same picture again and again is how the tomb is built. Every jump into a corridor field lands on one fixed spot at the near end of the screen (all 117 jumps into gnroad2 land at X 5, Y −600, triangle 46), so the party always walks into the picture and the camera turns to face the way it walked. All 12 crossroads are gnroad2. A corner is gnroad3 (turns right) when you reach it from one side and gnroad4 (turns left) from the other.
The notes are a lost student's directions carved on the two stone slabs (room 3 corridor, state 30; room 2 corridor, state 62). Each button walks them from the slab, one exit per word.
Trail: the path you walked.
The ten backgrounds and what each one holds
Yellow lines are script triggers (SETLINE), dashed violet lines are .inf gateways, dots are script-placed models. Field ids are lines of maplist.
Every variable the tomb touches
| Var | Meaning here | Written | Read |
|---|
All 77 values of var486
Facing is the camera direction (north = top of the map). Each exit cell gives the value written and the field loaded. Click a row to open it in the explorer.
| var486 | Field | Mark | Kind | Faces | FW | LW | RW | BW |
|---|
Things the scripts show that the game does not
- The camera always turns to face the way you walked: walking BW out of a junction loads the next corridor facing back the other way. That is why every location needs up to four var486 values.
- The student's first note (room 3 corridor, state 30) is right: back, forward, right, left, right, forward walks 30 → 26 → 28 → 33 → 13 → 18 → 6, the entrance corridor facing out. The second note (room 2 corridor, state 62) does not work if each word is one exit: it reaches the bend at mark 21 (state 65), where “right” does not exist.
- gnroad1's BW script carries a copy of gnroad5's table (states 16, 32, 38, 52). gnroad1 never runs with those values, so the copy is dead.
- Only the north approach (16) can lower the bridge. Entering from the other three sides of the central building never works, whatever the flags.
- The two room save points (rooms 1 and 3) are hidden save points: shown only with Move-Find (var88), and room 1's also needs Sacred gone.
- The sword at the first junction (mark 3) only exists in states 1 and 18 (facing south or north) and shows
Student ID No. {var728}. - Rooms set var486 themselves on load (73, 74, 75, 76; gnview1 sets 0), so the value the corridor wrote before the jump into the room is overwritten.