Author: HobbitDur
Tomb of the Unknown King
The tomb is ten fields, gnroad1 to gnview1. Its maze is not built from one field per corridor: five corridor backgrounds are reused for every place in the maze, and one variable, var486, says where the party is and which way the camera looks. Each exit script reads var486, writes the next value and jumps to the field that draws it. Progress through the tomb is kept in var491, the two one-time scenes in var485.
Open the interactive Tomb explorer (also in the menu under this page): the field flow chart, the story gates, every var486 value on the in-game map (click an exit on a field picture to walk the maze, tick the progress flags to sink the slabs or lower the bridge) and the ten backgrounds with their triggers.
Fields
| Field ID | Field | Role | var486 | | ——– | ——- | ————————————————————– | ——————————– | | 783 | gnroad1 | Straight corridor ending in a wall, a room door or the way out | 0, 6, 30, 40, 62, 73, 74, 75 | | 784 | gnroad2 | Crossroad with four exits | 48 values (12 places, 4 facings) | | 785 | gnroad3 | Bend that turns right | 7, 15, 22, 27, 41, 46, 55, 63 | | 786 | gnroad4 | Bend that turns left | 5, 14, 21, 29, 39, 49, 54, 65 | | 787 | gnroad5 | Approach to the central building, with the bridge | 16, 32, 38, 52, 76 | | 788 | gnroom1 | Room 1: Sacred | sets 73 | | 789 | gnroom2 | Room 2: water lever | sets 74 | | 790 | gnroom3 | Room 3: gearwheel | sets 75 | | 791 | gnroom4 | Room 4: Sacred and Minotaur, the sealed arc | sets 76 | | 792 | gnview1 | Outside the tomb: students, save point, world map exit | sets 0 |
Field IDs are lines of maplist (see Map jumps).
How var486 drives the maze
Every corridor field has up to four line entities, mapjump_FW, mapjump_LW, mapjump_RW and mapjump_BW (forward, left, right, back as seen on screen). Their touchOn script is one long chain:
| Step | Instructions |
|---|---|
| 1 | PSHM_B 486, PSHN_L N, CAL EQ, JPF next |
| 2 | PSHN_L M, POPM_B 486 |
| 3 | push field, X, Y, Z, MAPJUMP3 (facing, triangle) |
| 4 | JMP end, then the next value of N |
gnroad3 and gnroad4 write the new value in each branch and share one MAPJUMP3 at the end. The next field reads var486 again in its Director and object scripts to pick what it shows: the stone slab in gnroad1, the bridge and building views in gnroad5, the sword in gnroad2.
The camera always turns to face the way the party walked. Walking back out of a crossroad loads the next corridor looking the other way, so each place needs one var486 value per facing it can be seen from: four at a crossroad, one per field at a bend (gnroad3 from one side, gnroad4 from the other), two in a dead-end corridor.
The rooms and the outside set var486 themselves when they load (Director script): gnview1 0, gnroom1 to gnroom4 73 to 76. Their exits are .inf gateways, not scripts: rooms 1 to 3 and gnview1 lead to gnroad1, room 4 to gnroad5. From 73, 74 and 75, forward leads back into the maze and back re-enters the room. From 76, back leads to 72, the crossroad north of the centre, facing north, whichever side the party came from.
Map positions
The dungeon map is a background layer of every corridor field (shown by the map entity). The “you are here” mark is a single animated tile of the mark entity; each mark::onN script moves it by (dx, dy) pixels with a background-move opcode, and mapdisplay::default picks the script from var486. Those offsets give the real place of every value. North is the top of the map; the entrance is at the top.
Green: crossroads (gnroad2). Blue: bends (gnroad3/gnroad4). Orange: dead-end corridors (gnroad1). Red: approaches to the centre (gnroad5). Violet: rooms.
| Mark | Offset | Kind | Field | Facing N | Facing E | Facing S | Facing W |
|---|---|---|---|---|---|---|---|
| 1 | -3, -41 | Dead-end corridor | gnroad1 | 6 | 0 | ||
| 4 | -19, -31 | Bend (turns left) | gnroad4 | 22 | 5 | ||
| 3 | -3, -31 | Junction | gnroad2 | 18 | 9 | 1 | 3 |
| 2 | 16, -31 | Bend (turns right) | gnroad3 | 7 | 14 | ||
| 9 | -34, -15 | Bend (turns left) | gnroad4 | 41 | 21 | ||
| 8 | -19, -15 | Junction | gnroad2 | 37 | 25 | 8 | 17 |
| 7 | -4, -15 | Junction | gnroad2 | 72 | 23 | 4 | 13 |
| 6 | 16, -15 | Junction | gnroad2 | 33 | 19 | 2 | 11 |
| 5 | 31, -15 | Bend (turns right) | gnroad3 | 15 | 29 | ||
| 28 | -2, -8 | Approach to the centre | gnroad5 | 16, 76 | |||
| 15 | -41, 1 | Dead-end corridor | gnroad1 | 73 | 40 | ||
| 14 | -34, 1 | Junction | gnroad2 | 58 | 43 | 24 | 36 |
| 13 | -19, 1 | Junction | gnroad2 | 56 | 42 | 20 | 71 |
| 27 | -14, 1 | Approach to the centre | gnroad5 | 38 | |||
| 25 | 9, 1 | Approach to the centre | gnroad5 | 32 | |||
| 12 | 16, 1 | Junction | gnroad2 | 48 | 69 | 12 | 28 |
| 11 | 31, 1 | Junction | gnroad2 | 45 | 34 | 10 | 26 |
| 10 | 38, 1 | Dead-end corridor | gnroad1 | 30 | 75 | ||
| 26 | -2, 11 | Approach to the centre | gnroad5 | 52 | |||
| 20 | -34, 20 | Bend (turns left) | gnroad4 | 55 | 39 | ||
| 19 | -19, 20 | Junction | gnroad2 | 66 | 59 | 35 | 51 |
| 18 | -4, 20 | Junction | gnroad2 | 64 | 57 | 70 | 47 |
| 17 | 16, 20 | Junction | gnroad2 | 61 | 53 | 31 | 44 |
| 16 | 31, 20 | Bend (turns right) | gnroad3 | 49 | 27 | ||
| 23 | -19, 36 | Bend (turns left) | gnroad4 | 63 | 54 | ||
| 22 | -3, 37 | Junction | gnroad2 | 68 | 67 | 50 | 60 |
| 21 | 16, 37 | Bend (turns right) | gnroad3 | 65 | 46 | ||
| 24 | -4, 46 | Dead-end corridor | gnroad1 | 74 | 62 |
The rooms have their own marks, used by their mapdisplay scripts:
| Mark | Offset | Place | Field | var486 |
|---|---|---|---|---|
| 29 | -50, 1 | Room 1 (Sacred) | gnroom1 | 73 on load |
| 30 | -4, 56 | Room 2 (water lever) | gnroom2 | 74 on load |
| 31 | 48, -1 | Room 3 (gearwheel) | gnroom3 | 75 on load |
| 32 | -2, 1 | Room 4 (the Brothers) | gnroom4 | 76 on load |
Every value of var486
Facing is the camera direction. Each exit gives the value written and the field loaded.
| var486 | Field | Mark | Facing | Forward | Left | Right | Back |
|---|---|---|---|---|---|---|---|
| 0 | gnroad1 | 1 | south | 1 (gnroad2) | gnview1 | ||
| 1 | gnroad2 | 3 | south | 4 (gnroad2) | 7 (gnroad3) | 5 (gnroad4) | 6 (gnroad1) |
| 2 | gnroad2 | 6 | south | 12 (gnroad2) | 15 (gnroad3) | 13 (gnroad2) | 14 (gnroad4) |
| 3 | gnroad2 | 3 | west | 5 (gnroad4) | 4 (gnroad2) | 6 (gnroad1) | 7 (gnroad3) |
| 4 | gnroad2 | 7 | south | 16 (gnroad5) | 19 (gnroad2) | 17 (gnroad2) | 18 (gnroad2) |
| 5 | gnroad4 | 4 | south | 8 (gnroad2) | 9 (gnroad2) | ||
| 6 | gnroad1 | 1 | north | gnview1 | 1 (gnroad2) | ||
| 7 | gnroad3 | 2 | south | 2 (gnroad2) | 3 (gnroad2) | ||
| 8 | gnroad2 | 8 | south | 20 (gnroad2) | 23 (gnroad2) | 21 (gnroad4) | 22 (gnroad3) |
| 9 | gnroad2 | 3 | east | 7 (gnroad3) | 6 (gnroad1) | 4 (gnroad2) | 5 (gnroad4) |
| 10 | gnroad2 | 11 | south | 27 (gnroad3) | 30 (gnroad1) | 28 (gnroad2) | 29 (gnroad4) |
| 11 | gnroad2 | 6 | west | 13 (gnroad2) | 12 (gnroad2) | 14 (gnroad4) | 15 (gnroad3) |
| 12 | gnroad2 | 12 | south | 31 (gnroad2) | 34 (gnroad2) | 32 (gnroad5) | 33 (gnroad2) |
| 13 | gnroad2 | 7 | west | 17 (gnroad2) | 16 (gnroad5) | 18 (gnroad2) | 19 (gnroad2) |
| 14 | gnroad4 | 2 | west | 3 (gnroad2) | 2 (gnroad2) | ||
| 15 | gnroad3 | 5 | south | 10 (gnroad2) | 11 (gnroad2) | ||
| 16 | gnroad5 | 28 | south | gnroom4 if bridge down | 72 (gnroad2) | ||
| 17 | gnroad2 | 8 | west | 21 (gnroad4) | 20 (gnroad2) | 22 (gnroad3) | 23 (gnroad2) |
| 18 | gnroad2 | 3 | north | 6 (gnroad1) | 5 (gnroad4) | 7 (gnroad3) | 4 (gnroad2) |
| 19 | gnroad2 | 6 | east | 15 (gnroad3) | 14 (gnroad4) | 12 (gnroad2) | 13 (gnroad2) |
| 20 | gnroad2 | 13 | south | 35 (gnroad2) | 38 (gnroad5) | 36 (gnroad2) | 37 (gnroad2) |
| 21 | gnroad4 | 9 | south | 24 (gnroad2) | 25 (gnroad2) | ||
| 22 | gnroad3 | 4 | east | 9 (gnroad2) | 8 (gnroad2) | ||
| 23 | gnroad2 | 7 | east | 19 (gnroad2) | 18 (gnroad2) | 16 (gnroad5) | 17 (gnroad2) |
| 24 | gnroad2 | 14 | south | 39 (gnroad4) | 42 (gnroad2) | 40 (gnroad1) | 41 (gnroad3) |
| 25 | gnroad2 | 8 | east | 23 (gnroad2) | 22 (gnroad3) | 20 (gnroad2) | 21 (gnroad4) |
| 26 | gnroad2 | 11 | west | 28 (gnroad2) | 27 (gnroad3) | 29 (gnroad4) | 30 (gnroad1) |
| 27 | gnroad3 | 16 | west | 44 (gnroad2) | 45 (gnroad2) | ||
| 28 | gnroad2 | 12 | west | 32 (gnroad5) | 31 (gnroad2) | 33 (gnroad2) | 34 (gnroad2) |
| 29 | gnroad4 | 5 | west | 11 (gnroad2) | 10 (gnroad2) | ||
| 30 | gnroad1 | 10 | east | gnroom3 once slab sunk | 26 (gnroad2) | ||
| 31 | gnroad2 | 17 | south | 46 (gnroad3) | 49 (gnroad4) | 47 (gnroad2) | 48 (gnroad2) |
| 32 | gnroad5 | 25 | west | gnroom4 (never: no bridge) | 69 (gnroad2) | ||
| 33 | gnroad2 | 6 | north | 14 (gnroad4) | 13 (gnroad2) | 15 (gnroad3) | 12 (gnroad2) |
| 34 | gnroad2 | 11 | east | 30 (gnroad1) | 29 (gnroad4) | 27 (gnroad3) | 28 (gnroad2) |
| 35 | gnroad2 | 19 | south | 54 (gnroad4) | 57 (gnroad2) | 55 (gnroad3) | 56 (gnroad2) |
| 36 | gnroad2 | 14 | west | 40 (gnroad1) | 39 (gnroad4) | 41 (gnroad3) | 42 (gnroad2) |
| 37 | gnroad2 | 8 | north | 22 (gnroad3) | 21 (gnroad4) | 23 (gnroad2) | 20 (gnroad2) |
| 38 | gnroad5 | 27 | east | gnroom4 (never: no bridge) | 71 (gnroad2) | ||
| 39 | gnroad4 | 20 | east | 59 (gnroad2) | 58 (gnroad2) | ||
| 40 | gnroad1 | 15 | west | gnroom1 | 43 (gnroad2) | ||
| 41 | gnroad3 | 9 | east | 25 (gnroad2) | 24 (gnroad2) | ||
| 42 | gnroad2 | 13 | east | 38 (gnroad5) | 37 (gnroad2) | 35 (gnroad2) | 36 (gnroad2) |
| 43 | gnroad2 | 14 | east | 42 (gnroad2) | 41 (gnroad3) | 39 (gnroad4) | 40 (gnroad1) |
| 44 | gnroad2 | 17 | west | 47 (gnroad2) | 46 (gnroad3) | 48 (gnroad2) | 49 (gnroad4) |
| 45 | gnroad2 | 11 | north | 29 (gnroad4) | 28 (gnroad2) | 30 (gnroad1) | 27 (gnroad3) |
| 46 | gnroad3 | 21 | west | 60 (gnroad2) | 61 (gnroad2) | ||
| 47 | gnroad2 | 18 | west | 51 (gnroad2) | 50 (gnroad2) | 52 (gnroad5) | 53 (gnroad2) |
| 48 | gnroad2 | 12 | north | 33 (gnroad2) | 32 (gnroad5) | 34 (gnroad2) | 31 (gnroad2) |
| 49 | gnroad4 | 16 | north | 45 (gnroad2) | 44 (gnroad2) | ||
| 50 | gnroad2 | 22 | south | 62 (gnroad1) | 65 (gnroad4) | 63 (gnroad3) | 64 (gnroad2) |
| 51 | gnroad2 | 19 | west | 55 (gnroad3) | 54 (gnroad4) | 56 (gnroad2) | 57 (gnroad2) |
| 52 | gnroad5 | 26 | north | gnroom4 (never: no bridge) | 70 (gnroad2) | ||
| 53 | gnroad2 | 17 | east | 49 (gnroad4) | 48 (gnroad2) | 46 (gnroad3) | 47 (gnroad2) |
| 54 | gnroad4 | 23 | east | 67 (gnroad2) | 66 (gnroad2) | ||
| 55 | gnroad3 | 20 | north | 58 (gnroad2) | 59 (gnroad2) | ||
| 56 | gnroad2 | 13 | north | 37 (gnroad2) | 36 (gnroad2) | 38 (gnroad5) | 35 (gnroad2) |
| 57 | gnroad2 | 18 | east | 53 (gnroad2) | 52 (gnroad5) | 50 (gnroad2) | 51 (gnroad2) |
| 58 | gnroad2 | 14 | north | 41 (gnroad3) | 40 (gnroad1) | 42 (gnroad2) | 39 (gnroad4) |
| 59 | gnroad2 | 19 | east | 57 (gnroad2) | 56 (gnroad2) | 54 (gnroad4) | 55 (gnroad3) |
| 60 | gnroad2 | 22 | west | 63 (gnroad3) | 62 (gnroad1) | 64 (gnroad2) | 65 (gnroad4) |
| 61 | gnroad2 | 17 | north | 48 (gnroad2) | 47 (gnroad2) | 49 (gnroad4) | 46 (gnroad3) |
| 62 | gnroad1 | 24 | south | gnroom2 once slab sunk | 68 (gnroad2) | ||
| 63 | gnroad3 | 23 | north | 66 (gnroad2) | 67 (gnroad2) | ||
| 64 | gnroad2 | 18 | north | 52 (gnroad5) | 51 (gnroad2) | 53 (gnroad2) | 50 (gnroad2) |
| 65 | gnroad4 | 21 | north | 61 (gnroad2) | 60 (gnroad2) | ||
| 66 | gnroad2 | 19 | north | 56 (gnroad2) | 55 (gnroad3) | 57 (gnroad2) | 54 (gnroad4) |
| 67 | gnroad2 | 22 | east | 65 (gnroad4) | 64 (gnroad2) | 62 (gnroad1) | 63 (gnroad3) |
| 68 | gnroad2 | 22 | north | 64 (gnroad2) | 63 (gnroad3) | 65 (gnroad4) | 62 (gnroad1) |
| 69 | gnroad2 | 12 | east | 34 (gnroad2) | 33 (gnroad2) | 31 (gnroad2) | 32 (gnroad5) |
| 70 | gnroad2 | 18 | south | 50 (gnroad2) | 53 (gnroad2) | 51 (gnroad2) | 52 (gnroad5) |
| 71 | gnroad2 | 13 | west | 36 (gnroad2) | 35 (gnroad2) | 37 (gnroad2) | 38 (gnroad5) |
| 72 | gnroad2 | 7 | north | 18 (gnroad2) | 17 (gnroad2) | 19 (gnroad2) | 16 (gnroad5) |
| 73 | gnroad1 | 15 | east | 43 (gnroad2) | gnroom1 | ||
| 74 | gnroad1 | 24 | north | 68 (gnroad2) | gnroom2 | ||
| 75 | gnroad1 | 10 | west | 26 (gnroad2) | gnroom3 | ||
| 76 | gnroad5 | 28 | south | gnroom4 | 72 (gnroad2) |
gnroad1’s mapjump_BW also holds a copy of gnroad5’s table (16, 32, 38, 52). gnroad1 never runs with those values.
Progress gates
| Step | Field and script | What happens |
|---|---|---|
| 1 | gnview1 G_student2::default | First visit: two Garden students run past (“F-Float!”), var485 |= 0xD5 (bits 1, 4, 16, 64, 128). The students exist only while var485 & 469 is 0. |
| 2 | gnroom1 battleline::touchOn | The statue speaks, BATTLE 189 (Sacred), then var491 |= 2. |
| 3 | gnroad1 Director, seigyo | With var491 & 2 clear, states 30 and 62 show an inscribed stone slab and lock walkmesh triangles 79, 82 and 85: rooms 2 and 3 are closed. Once set, the slab is sunk. |
| 4 | gnroom2 WaterRun::talk | A party member pulls the lever: var491 |= 4. Water flows, and ripples show in gnroad5. |
| 5 | gnroom3 gearwheel::talk | var491 |= 8. |
| 6 | gnroad5 Director, hasi | Triangles 37 and 39 (the bridge) are locked on load. They unlock only with var491 & 4 and & 8, and only if var486 is 16 (north approach) or var84 is 791 (back from room 4). The bridge picture: raised, half down with only & 8, down with both. |
| 7 | gnroom4 battleline::touchOn | BATTLE 190 (Sacred and Minotaur), var491 |= 16, var485 |= 2 (brothers gone, triangles 99, 112, 115, 131 unlocked), MENUNAME 7 (Brothers), GETCARD 87 (Minotaur). |
| 8 | gnroom4 ArcTop::open | The sealed one speaks: var491 |= 32. No script reads bits 16 and 32. |
From the east, south and west approaches (32, 52, 38) the building shows its side or back and the bridge never comes down.
Variables
| Var | Size | Use in the tomb |
|---|---|---|
| 486 | byte | Place and camera facing, 0 to 76 (tables above). |
| 491 | byte | Progress: +2 Sacred driven off, +4 water channel open, +8 gearwheel turned, +16 Sacred and Minotaur beaten, +32 sealed one freed. |
| 485 | byte | +1, +4, +16, +64, +128 students scene played (set together); +2 brothers gone from room 4. |
| 730 | byte | +32 has the tomb map: the map key works and offers Escape. +64 has the location displayer: the map shows the mark. |
| 84 | word | Last field. Arrival placement and sounds: 787 in gnroad2, 788 to 790 in gnroad1, 791 in gnroad5 (also unlocks the bridge). |
| 88 | byte | Move-Find. The save points of rooms 1 and 3 show only with it (room 1 also needs var491 & 2). |
| 261 | byte | Save point state, as everywhere. |
| 728 | byte | Student ID number on the sword (MESVAR), shown in gnroad2 at mark 3 in states 1 and 18. |
| 1024, 1025 | byte | Temporary: statue volume ramp in gnroom1, Move-Find copies for the save points. |
Map key and escape
Every field except gnview1 runs mapdisplay::default in a loop. With var730 & 32 it waits for the map key (KEYSCAN 256), shows the map layer and, with var730 & 64, the mark for the current var486. A second key opens “Escape from the dungeon?”: yes runs ADDSEEDLEVEL -100 (one SeeD rank) and MAPJUMP3 to gnview1.
Inscriptions
The slab in front of rooms 3 and 2 (states 30 and 62) holds a dead student’s directions, read by Squall::read:
| State | Text | Result when each word is one exit |
|---|---|---|
| 30 | Back, forward, right, left, right, forward. | 30, 26, 28, 33, 13, 18, 6: the entrance corridor facing out. |
| 62 | Back, forward, left twice, forward twice, right twice, forward twice. | 62, 68, 64, 51, 54, 67, 65: stops at a bend, where there is no right exit. |
Draw points
| Field | Draw point | Magic |
|---|---|---|
gnview1 | 38 | Protect |
gnroom2 | 39 | Float |
gnroom3 | 40 | Cura |
See Draw points for the table.
Script reference
| Field | Script | Role |
|---|---|---|
| all corridors | mapjump_FW/LW/RW/BW::touchOn | Exit tables on var486 |
| all corridors | mapdisplay::default | Map key, mark, escape |
| all corridors | mark::on1 to mark::on32 | Mark offsets |
gnroad1 | seigyo::up/down/no, stone | Slab raised, sunk, hidden |
gnroad1 | talkline, Squall::read | Reading the slab |
gnroad2 | sword::talk | Student ID (var728) |
gnroad5 | hasi, tatemono, hamon | Bridge, building view, ripples |
gnroom1 | battleline::touchOn, YoungerSeclet::appear | Statue and battle 189 |
gnroom2 | WaterRun::talk, seigyo::start | Lever and water |
gnroom3 | gearwheel::talk | Gearwheel |
gnroom4 | battleline::touchOn, ArcTop::open | Battle 190, Brothers, sealed one |
gnview1 | G_student2::default, worldmap::touchOn | Students scene, world map exit |