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llamamod/notes/mod-boottolevel.md
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Boot to level (boot-to-level, GAMEPLAY)

mods/boottolevel/BootToLevelMod – starts the game directly in one level: no logos, no menus, no world map. Used by the level editor's Play button (details, offsets and tests: editor-playtest.md).

Option Default
world / chapter 1 / 1 level to load (world 9 = TestLevel, chapters 1–49)
slot 3 save slot the game plays with (new game if empty)
logos on skip logo movies and title screen (skipped if intro-skip already patched them)
quitOnEscape off Escape (pause) ends the game at once through the normal exit path
start empty "x, y, z[, yaw]" in cells: moves the level's player start (WAD rebuild)

Patches: jmp at 0x549C50 (main-menu frame handler) → once: read slots (FUN_0041c0e0), load slot (FUN_0041cc70), set tribe/world/chapter/map 0x584EB4…, music shutdown, state 0x5846E4 = 3, return 1. quitOnEscape: jmp at 0x549F40 (in-game frame handler): pause bit 0x8 of 0x5FCF08 → state 0x11 (the main menu's "Beenden"), return 1. Data: one 4-byte allocateData flag. Registered via ServiceLoader (META-INF/services/com.eliasmueller.llamamod.mods.Mod).

Verified on display :9: Village 2 and TestLevel 2 load within seconds of the window; Escape ends groove.exe in ~1.3 s without errors.