Func train

This entity is not in the FGD by default.
See below for instructions on making it available.

Entity Description

It is a leftover from Quake that ping-pongs between the start and end of a series of path_corners. It was mostly replaced by func_tracktrain in GoldSrc, but was still used for looping auto-scrolling backgrounds. In Source, the introduction of parenting has rendered this method obsolete. However, the entity is still functional.

Tip:This entity is not affected by the turning inaccuracy issues that func_tracktrain is, making it a good alternative for fast-moving objects.

Bug:It will always try to play sounds, regardless of whether they are actually specified. This can be set to Default.Null with a volume of 0 to play no sound.  [todo tested in ?]

KeyValues

Spawn path_corner (target) <targetname>

The name of the first path_corner in the train's path. The train will spawn at this path_corner.

Speed (speed) <float>

Speed at which the train moves.

Movement Sound (noise1) <string>

The sound to play when the train moves.

Stop Sound (noise2) <string>

The sound to play when the train stops moving.

Sound Volume (0-10) (volume) <float>

Volume of the sounds emitted when moving and stopping.

Crush Damage (dmg) <float>

Amount of damage to deal to entities blocking the train.

RenderFields:

Render Mode (rendermode) <byte choices>

Set a non-standard rendering mode on this entity.

Render Modes

0: Normal 1: Color 2: Texture 3: Glow 4: Solid/Alphatest 5: Additive 6: Removed, does nothing 7: Additive Fractional Frame 8: Alpha Add 9: World Space Glow 10: Don't Render

Render FX (renderfx) <byte choices>

Various somewhat legacy alpha effects. See render effects.

Render Amount / Transparency (renderamt) <byte>

Transparency amount, requires a Render Mode other than Normal. 0 is invisible, 255 is fully visible.

Render Color (R G B) (rendercolor) <color255>

Color tint.

Flags

Non-solid : [8]

Inputs

RenderFields:

Alpha <integer 0–255>

Sets the entity's transparency to a number from 0 (invisible) to 255 (fully visible). Requires the entity to have its rendermode set to a number other than 0.

Color <color255RedirectInput/color32>

Sets an RGB color for the entity.

Toggle

Toggle movement

Start

Start movement

Stop

Stop movement

FGD Code

@SolidClass base(Targetname, Origin, RenderFields) line(255 255 0, targetname, target) = func_train: "An old entity leftover from Quake. It follows a series of path_corner entities."
[
	spawnflags(flags) =
	[
		8 : "Non-solid" : 0
	]
	target(target_destination) : "Spawn path_corner" : : "The name of the first path_corner in the train's path. The train will spawn at this path_corner."
	speed(float) : "Speed" : "50" : "Speed at which the train moves."
	noise1(sound) : "Movement Sound" : "Default.Null" : "The sound to play when the train moves. This must be specified, but can be set to 'Default.Null' to play no sound."
	noise2(sound) : "Stop Sound" : "Default.Null" : "The sound to play when the train stops moving. This must be specified, but can be set to 'Default.Null' to play no sound."
	volume(float) : "Sound volume (0-10)" : "10" : "Volume of the sounds emitted when moving and stopping."
	dmg(float) : "Crush Damage" : "0" : "Amount of damage to deal to entities blocking the train."

	// Inputs
	input Toggle(void) : "Toggle movement"
	input Start(void) : "Start movement"
	input Stop(void) : "Stop movement"
]