initial commit: llamamod 0.2.0 – reverse-engineered level formats (wad, map, trak, text, stpc), python tools and notes, java mod manager (iso install, mod pipeline with exe patching, save editor, wine/windows launcher) with mods (test world, debug wireframe, mirror, randomizer, fog, cheats, intro skip, practice, free camera, boot to level, level projects) and the 3d level editor (geometry, objects, cross-world import, environment, textures, play-test, manual)
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# Level editor – play-test straight into the level (`editor.tools.playtest`, `mods.boottolevel`)
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Before: Play installed the level and started the game at its main menu; the player had to
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choose *Spiel starten* → slot 3 → Enter on the map. Now **Play (F5)** lands in the level a few
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seconds after the game window opens, and **Escape** quits back to the editor.
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## Editor side (`PlaytestEditorPlugin`, `PlaytestRunner`, `FloorFinder`)
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| Action | Key | |
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|---|---|---|
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| Play (replaces the built-in `level.play`) | F5 | build → install level mod → apply user mods + boot mod → save slot → start |
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| Play from camera position | Shift+F5 (toolbar) | the llama starts on the ground in the middle of the view, facing the camera direction |
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| Play boots straight into the level | Level menu (check) | off = old behaviour (main menu, map cursor) |
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| Escape quits the play-test | Level menu (check) | boot mod option `quitOnEscape` |
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* Run: `PlayTest.build` (built-in, background) → the project snapshot is written to
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`<data>/levels/<stem>.llamalevel` → the user's **active** mods (others on the same WAD and Test
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World on chapter 1 turned off) + the level mod become `enabledMods`; `boot-to-level` is applied
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**in addition** (not stored in `enabledMods`) with world/chapter of the project, slot
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(Preferences, default 3), `logos=true`, `quitOnEscape`, `start` → save slot unlocked up to the
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level → `GameLauncher.launch`.
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* **Restore**: a daemon thread polls `GameLauncher.isRunning()` every 2 s; when the game has
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ended it re-applies the user's selection without the boot mod (cached outputs, < 1 s) and
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restores the boot mod's own options → LlamaMod's normal Play starts at the menu again
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(`RestoreCheck`: active `[level-…, boot-to-level]` → `[level-…]`, exe without mod patches).
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If the editor is closed before the game, LlamaMod shows the selection as "apply needed".
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* **Play from camera position**: ground point = depth-buffer hit at the viewport centre
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(export space → game x, y, −z), heading = camera yaw (`atan2(f.x, −f.z)`, 0 = +z).
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`FloorFinder` then looks for **collision**: highest floor polygon (|n.y| ≥ 0.5) at or below
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the hit + 0.6 among scene tiles and brush-generated tiles, searching up to 0.75 cells around
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(rings of 8); material 30 (death floor) is rejected. Needed because render geometry often has
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no collision (village: the hill edge east of the start renders, but only a death floor at
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y 2.25 lies below – the llama fell to a game over).
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* `-Dllamamod.editor.noLaunch=true` skips the start (tests start the game with apptest).
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## Exe mod `boot-to-level` (GAMEPLAY, `modifiesExecutable`)
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Options: `world` 1–9, `chapter` 1–49, `slot` 1–3, `logos` (skip logo movies/title, same patch
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as intro-skip – only applied if the bytes are still original, so both mods can be on),
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`quitOnEscape`, `start` ("x, y, z[, yaw]" in cells; empty = the level's own start). Order 90
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(after level mods). Registered through `META-INF/services/com.eliasmueller.llamamod.mods.Mod`
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(ServiceLoader; `ModRegistry` was not edited).
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### Engine facts used
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| | |
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|---|---|
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| 0x5846E4 | game state: 1 ?, 2 main menu, 3 in game, 4 attract demo, 5 options?, 6 save slots, 12 world map, 0x11 quit |
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| 0x578F28 | frame handler per state (returns 1 = state changed → main loop runs the enter handler) |
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| 0x578F7C | enter handler per state; state 3 = FUN_0054ae20: intro movie, loading screen `T1%d%d.COR`, FUN_00419510(tribe, world, chapter, 0) loads the level |
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| 0x579050 | per-state update/render (3 = FUN_0054b590, the game frame) |
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| 0x584EB4/B8/BC/C0 | tribe, world, chapter, map of the level to load; 0x585588/0x584C24/0x584C20/0x58557C = map cursor |
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| 0x584700 | next state for fade transitions; 0x584638 = sub state (7 = enter level) |
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| FUN_0041c0e0 | reads `king0..2.ksv` into 0x585274 + slot·0x100 |
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| FUN_0041cc70 | loads slot 0x584C28 into the game variables (new game in it if empty) |
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| 0x546CC0, 0x546990([0x6D94B4]), 0x5464D0 | music/sound shutdown done before every state switch (copied from the demo switch at 0x549E5D) |
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| 0x5FCF08 bit 0x8 | "pause" pressed this frame (Escape) |
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| main loop (WinMain) | exits through its normal cleanup (FUN_00545030, DestroyWindow, CoUninitialize) when the state is 0x11 – the main menu's *Beenden* |
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### Patches
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* **Boot**: `jmp` at 0x549C50 (state-2 frame handler, `A1 2C 37 58 00` = `mov eax,[0x58372c]`).
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The cave runs once (flag in an `allocateData` block): pushad, read slots, `[0x584C28]=slot−1`,
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load slot, set tribe 1/world/chapter/map 0 (+ map cursor), `[0x5855B0]=0`, sub state 7, music
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shutdown, state 3, popad, `mov eax,1; ret` → the main loop enters state 3 exactly like the
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map's Enter would. Later main-menu frames (after quitting to the menu) run the original code.
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* **Escape quits** (`quitOnEscape`): `jmp` at 0x549F40 (state-3 frame handler, same 5 bytes):
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`test byte [0x5FCF08],8; jz original; mov [0x5846E4],0x11; mov eax,1; ret`.
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* **Logos**: 0x41D56E `68 28 25` → `53 EB 62` (see mod-introskip.md).
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* **Start override** (data, not exe): the level's WAD (as written by earlier mods) is imported,
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the Llama moved/turned and rebuilt (`StartOverride`; an unchanged rebuild is byte-identical).
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Its waypoint chain moves and turns along only if it is an editor/levelbuild camera chain
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(all nodes but the first on the llama); original levels use the llama's chain as a
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level-wide list, which stays.
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## Verified in game (apptest, display :9, Wine 6, 2026-11-06)
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| Test | Result |
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|---|---|
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| `boot-to-level` world 1 chapter 2, original data | Village 2 fly-by 5 s after the window, gameplay at ~20 s, walking works |
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| Editor Play on `examples/testwelt.llamalevel` (TestLevel 2) | game shows the Testwelt plaza with HUD 4 s after the window opens (`play_boot.jpg`) |
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| Editor Play from camera position, Village 1, start 2.3 cells east | llama stands at the new spot (`play_from_here.jpg`); the original village fly-by is skipped (its cut-scene camera is tied to the original start) |
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| Same with the view on the hill edge (no collision) | before FloorFinder: llama fell to a game over; now the editor finds the nearest floor or refuses |
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| Escape in gameplay (village and TestLevel) | groove.exe gone after 1.3 s, no crash, no Wine error dialog, the next start works |
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| Restore after the game | active mods back to the user's selection, exe has no mod patches |
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Images: `img/editor/play_boot.jpg`, `play_from_here.jpg`, `play_editor.jpg`,
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`play_windows_editor.jpg`.
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## Windows package under Wine
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`./gradlew packageWindows` → `LlamaMod-windows-x64.zip` (45 MB). Unpacked into an own win64
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prefix (Wine 6.0.3), started as `JDK_JAVA_OPTIONS="-XX:ActiveProcessorCount=4
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-Dllamamod.data=Z:\…\data" wine runtime/bin/javaw.exe -jar LlamaMod.exe --editor t1l1m001`
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(the launch4j exe itself hangs in its `javaw -version` check under Wine 6, see llamamod-app.md):
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the editor window opens (within about two minutes on the first start, software GL) and renders the village with all phase-3 plugins (Play from
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camera position, Textures tab, paint tool) – `img/editor/play_windows_editor.jpg`. The game was
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not started from the Windows build (the private Wine prefix has no game install); real Windows
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hardware is untested.
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## Tests
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`BootToLevelModTest` (hooks at both frame handlers, logo patch, exe re-parses; Escape hook only
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when asked; start parsing; original village: only the llama moves, file size unchanged;
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editor-style chain moves and turns with the llama), `RestoreCheck` (manual), `EdTour` +
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`PlayTourSteps` (scripted editor runs on an X display: camera placement, play-from-here).
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