exit logic corrected from in-game debugging: the leveldoor only sets g101-g105, the llama's script ends the level (material 16, exit cell, near the floor); stale floor record after a position jump explains the hover exit skip in jungle day 2

docs/reference/objects.md

@@ -81,27 +81,49 @@ nothing solid right behind the llama (the camera moves aside).
 | cameras | `CameraSide`, `CutSceneCameraDirectional`, `CutSceneTrigger` | camera zones and cut scenes |
 | always present | `CheatTeleport`, `Wompy`, `CutSceneTrigger` | |
 
-### The exit (LevelDoor) – *certain*
+### The exit (LevelDoor)
 
-The LevelDoor has no model. Every frame it checks:
+An exit is **two parts working together** (decompiled strat code; the details below were checked
+in game in Jungle Day 2 with a debugger, the basic rule also in Village 1):
+
+* The **LevelDoor** object (no model) writes its three parameters – the next level (tribe, world,
+  chapter) – to globals g101–g103 and its grid cell to g104/g105. It does **not** end the level
+  itself in the cases we tested (see the details below).
+* **Kuzco's own script** ends the level when **all** of these hold:
 
 ```
-game state is "running"
-and the floor polygon under the llama has collision material 16
-and floor(llama.x) == floor(door.x) and floor(llama.z) == floor(door.z)    ; same grid cell
--> endLevel(tribe, world, chapter)   ; its three parameters
+floor material under Kuzco == 16              ; the remembered floor (see "floor test" below)
+and floor(x), floor(z) == the cell in g104/g105   ; the exit's grid cell, any height
+and Kuzco is at most ~0.6 above that floor's height
+-> level change to g101..g103 (tally screen)
 ```
 
-So an exit needs **a floor with collision material 16 in the door's grid cell** – height does not
-matter. In several original levels the pad only appears when a tile swap opens the door (Village 1:
-the RubyIdolDoor swaps the tile to a model that has the material-16 pad). The parameters are the
-next level; the originals use (1, world, chapter + 1), and **(7, 7, 7)** in the last chapter of a
-world means "world finished" – in TestLevel that crashes, so custom levels use (1, 9, chapter).
-`endLevel` shows the tally (coins x / LNFO total, secrets) and unlocks the next chapter.
+  On a material-16 floor **outside** the exit cell the same check is a house door: fade-out and
+  the teleport of the environment zone of that cell.
 
-A second path in the Llama's own code ends the level when it stands on material 16 in the cell
-stored in globals g104/g105 with the target in g101–g103 – the arena uses this
-([Arena](../strats/arena.md)).
+So a normal exit needs **a floor with collision material 16 in the exit's grid cell**. In several
+original levels that floor only exists after a tile swap opens the door (Village 1 and Jungle Day 2:
+the RubyIdolDoor swaps the tile to a model that has the material-16 pad; checked in game in Village
+1). The parameters of the originals are (1, world, chapter + 1); **(7, 7, 7)** in the last chapter of
+a world means "world finished" – in TestLevel that crashes, so custom levels use (1, 9, chapter).
+The tally shows coins x / LNFO total and secrets and unlocks the next chapter. The arena sets
+g101–g105 itself to make its own exit ([Arena](../strats/arena.md)).
+
+**Details checked in game (Jungle Day 2, t1l4m002, 2026-11-07):**
+
+* The LevelDoor stores its parameters and cell in g101–g105, then checks global 0x21 **once**
+  (after 5 ticks); if it is not 3 the door removes itself. In Jungle Day 2 it was gone after the
+  start, so the Llama's check is what ends the level. That check needs floor material 16, the
+  door's cell, and the llama no more than 0.6 above the recorded floor height. Off the exit cell
+  the same material-16 check is the house door (fade-out and zone teleport).
+* The floor test only looks at tiles in the player's cell and takes the **nearest upward floor
+  below the player, at any distance**. Material 17 is ignored for the llama. A llama hovering 3.7
+  units above a house-door pad records material 16.
+* Each tick runs all strat scripts first and then the floor tests. A position change made after
+  the floor tests is seen by the next tick's scripts with the **old** floor record. So hovering
+  above any house-door pad and then moving the llama straight to floor height in the exit cell
+  ends the level, even though the exit cell has no material 16 yet (it appears only in the swap
+  model when the RubyIdolDoor opens). Moving there from normal ground does nothing.
 
 ## Environment zones (90 bytes, *certain* for the fields below)