Node names and gameplay objects

STUNTBOOST’s levels carry their gameplay in the names of the Blender objects, exported as glTF node names. The game’s content pipeline parses each name (SE.Pipeline.ParsedName) into a visible name, type flags and a code. Every one of the 23,799 node names in the 159 level parts parses to the same result under an independent reader of the grammar as under the game’s own parser: visibility, collision aggregate, bake shadows, inner name and code. Proven · STUNTBOOST

Grammar

{hide} {name} {type} {= {Class(args)} {.Property or Method(args)} } {.001}, every part optional. Sourced · StuntboostTools

• Name and code. With an =, the name is what precedes the first =, and the code is the rest from the = on, kept whole (a Blender .NNN suffix after the code stays part of it). Without an =, the name ends at its first .; what follows, normally Blender’s .NNN, is dropped. Proven · STUNTBOOST
• Type characters are read backwards from the end of the node name (the name up to its first .), in any order, until another character; as many characters as were read come off the end of the name. When the same kind appears twice, the one nearer the start wins. Proven · STUNTBOOST

Character	Meaning	Nodes in the 159 parts	Confidence
_	invisible, in the game and in the bake	19,745	Observed · STUNTBOOST
*	visible in the bake but not baked to	0	Observed · STUNTBOOST
°	invisible in the bake	744	Observed · STUNTBOOST
<	solid collision	18,632	Observed · STUNTBOOST
#	transmissive: a trigger, passed through	1,288	Observed · STUNTBOOST

The counts are of the characters read at the end of the nodes’ names. Observed · STUNTBOOST A solid collision node that is also invisible is written _<; an invisible trigger _#. Sourced · StuntboostTools

• Code. A C#-like chain of calls without spaces and without new: a class, then property setters or methods, each Name or Name(args), arguments split at top-level commas (Vector3(1,0,0),x is two). No class (code starting with =., or none) means Entity(). A trailing three-digit .NNN is Blender’s duplicate suffix and not a call. Proven · STUNTBOOST
• Hide prefixes in Blender: / hides the object before export (it can still affect the bake, as a shadow helper), // excludes it from the bake and from the export. Sourced · StuntboostTools

Parsing never fails: a name is what it says; what the game makes of an unknown class is the game’s own matter. A node with an unknown class shows as a red wireframe box in the game. Sourced · StuntboostTools

Classes the levels use

The class is the first call after the =. The levels use it as follows (counts of nodes whose code starts with the class):

Class	Nodes	Meaning	Confidence
Woosh	1,384		Observed · STUNTBOOST
Transparent(a)	619	a drawn-transparent node with alpha a, see level materials	Observed · STUNTBOOST
BackfaceShadowCaster()	553	drawn only into the static shadows; every room’s ceiling	Observed · STUNTBOOST
Booster(speed)	274	a boost pad; the speed is the exporter’s CM/S modifier	Sourced · StuntboostTools
Checkpoint	269	a checkpoint trigger	Inferred
BoomboxButton	180	an interactive prop (a boombox button)	Inferred
RoomKill	142		Observed · STUNTBOOST
Spawn(<name>[,n])	133	a spawn point; a custom map needs =Spawn(start) or =Spawn()	Sourced · StuntboostTools
DoorHandle, Door	115, 36	interactive door props	Inferred
CDCaseTransparent, CassetteCaseTransparent, TransparentBowl	99, 96, 56	transparent props	Inferred
Detour	94	a shortcut detour (the pipeline’s Cuts data)	Inferred
LightSwitch, PowerButtonStrip, PowerButtonPC, PCSpeakerKnob, PCScreenGlass	93, 80, 52, 56, 27	room props	Inferred
Text	90	text drawn in the level	Inferred
Drum, Cymbal, Boombox, TurntableArm	72, 31, 30, 44	interactive props	Inferred
Goal	57	the finish	Inferred
SetBakedLighting()	56	marks a level drawn from its baked lighting	Observed · STUNTBOOST
PreviewCamera	56	the camera of the level’s preview	Inferred
Skybox	56	marks the skybox part	Observed · STUNTBOOST
Sun, CustomSunRegion	55, 29	the sun, and regions with another sun	Inferred
CheckpointSpawn	55	a spawn after a checkpoint	Inferred
HiddenCollectible	54	a collectible	Inferred
Kill	42	a kill volume	Inferred
EyeGlass, EyePupil, EyeTriggerMesh	30, 30, 27	the eyes of the Eyes levels	Inferred
SignTrigger, GoalCameraPoints, RestartTut, LvlBowlsBowl	29, 28, 28, 36		Inferred

Gameplay objects in the level glTFs include boosters (#=Booster(speed)), doors with handles, drums, cymbals and turntables, and collectibles. Observed · STUNTBOOST

The lap goal and mandatory checkpoint assets of the tools (lap_goal, checkpoint_mandatory) mark laps: a lap goal activates only after every mandatory checkpoint. Sourced · StuntboostTools

How the game draws a node

By its name, in this order: an invisible node (_) is never drawn; a node with a BackfaceShadowCaster call is drawn only into the static shadows; a node whose name contains Transparent is drawn sorted back to front; otherwise it is drawn. A _< collision node is never drawn. Observed · STUNTBOOST 870 nodes over all levels contain Transparent. Observed · STUNTBOOST

Collections, vertex groups and modifiers

The exporter also reads names on collections (bake_group for a bake map, bake_size=X for UV scale, rename=from|to, append_prop=Code, swap_collision_materials=C_Kill, prevent_join, outline_max_thickness=X, outline_shift, outline_shift_relative, outline_shrink, delete_collisions), vertex groups (bake_size=0.2) and modifiers (//name ignored, /name removed after the bake). A // or / prefix on a collection excludes it. Sourced · StuntboostTools

The classes with no stated meaning

Woosh (1,384 nodes), RoomKill and several props have no meaning stated in the tools’ documentation; what the game does for each class is in its code and has not been tabulated.