View source for Effect flags (GoldSrc)

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A set of bitflags for configuring client-side visual effects.

== Flags ==
<source lang=c>
#define	EF_BRIGHTFIELD			1	// swirling cloud of particles
#define	EF_MUZZLEFLASH 			2	// single frame ELIGHT on entity attachment 0
#define	EF_BRIGHTLIGHT 			4	// DLIGHT centered at entity origin
#define	EF_DIMLIGHT 			8	// player flashlight
#define EF_INVLIGHT				16	// get lighting from ceiling
#define EF_NOINTERP				32	// don't interpolate the next frame
#define EF_LIGHT				64	// rocket flare glow sprite
#define EF_NODRAW				128	// don't draw entity
#define EF_NIGHTVISION			256 // player nightvision
#define EF_SNIPERLASER			512 // sniper laser effect
#define EF_FIBERCAMERA			1024// fiber camera
</source>
{{fl|1|[[EF_BRIGHTFIELD (GoldSrc)|EF_BRIGHTFIELD]]|The [https://valvedev.info/guides/properly-avoiding-the-pollen-sprites-in-half-life/ "pollen" or "firefly" particles] that appear when a [[monster]] is placed inside a wall.}}
{{fl|2|[[EF_MUZZLEFLASH (GoldSrc)|EF_MUZZLEFLASH]]|A single-frame [[elight]] with the RGB(255,192,64) at [[attachment]] 0.}}
{{fl|4|[[EF_BRIGHTLIGHT (GoldSrc)|EF_BRIGHTLIGHT]]|Emits a [[dlight]] of RGB(250,250,250) and a random radius of 400 to 431 from the origin.}}
{{fl|8|[[EF_DIMLIGHT (GoldSrc)|EF_DIMLIGHT]]|Emits a [[dlight]] of RGB(100,100,100) and a random radius of 200 to 231 from the origin.}}
{{fl|16|[[EF_INVLIGHT (GoldSrc)|EF_INVLIGHT]]|Get MDL lighting from the ceiling instead of from the floor. This has no effect if the model is currently receiving sunlight from a [[light_environment (GoldSrc)|light_environment]]. Keep in mind that only world brushes (including [[func_group]] and [[func_detail (GoldSrc)|func_detail]]) contribute to MDL lighting.}}
{{fl|32|[[EF_NOINTERP (GoldSrc)|EF_NOINTERP]]|Don't [[interpolation|interpolate]] on the next frame.}}
:{{warning|Causes crashes.}}
{{fl|64|[[EF_LIGHT (GoldSrc)|EF_LIGHT]]|Emits a [[dlight]] of RGB(100,100,100) and a radius of 200 from the entity origin, and render {{file|sprites/animglow01|spr}} using glow rendermode if present.}} 
{{fl|128|[[EF_NODRAW (GoldSrc)|EF_NODRAW]]|Entity is completely ignored by the client, and stops drawing the entity.}}
:{{modernImportant|Can cause prediction errors if a player proceeds to collide with it on the server.}}
{{modernConfirm|Do flags 256, 512, and 1024 work in all games, or only {{czds|2|nt=3}}?}}

== FGD entries ==
These can either be added individually to a entity as needed, or made a BaseClass at the top of the FGD to be inherited.
=== {{jack|2}} ===
<source lang=c>
effects(choices) : "Effect Flags" : 0 : "For configuring visual effects. If you want to combine effects, simply type in the sum of the effect numbers, e.g., '72' for 64+8." =
[
	0 : "0 - None"
	1 : "1 - EF_BRIGHTFIELD" : "swirling cloud of particles"
	2 : "2 - EF_MUZZLEFLASH" : "single frame ELIGHT on entity attachment 0"
	4 : "4 - EF_BRIGHTLIGHT" : "DLIGHT centered at entity origin"
	8 : "8 - EF_DIMLIGHT" : "player flashlight"
	16 : "16 - EF_INVLIGHT" : "get lighting from ceiling, instead of from floor"
	32 : "32 - EF_NOINTERP" : "don't interpolate the next frame"
	64 : "64 - EF_LIGHT" : "rocket flare glow sprite"
	128 : "128 - EF_NODRAW" : "don't draw entity"
	256 : "256 - EF_NIGHTVISION" : "player nightvision"
	512 : "512 - EF_SNIPERLASER" : "sniper laser effect"
	1024 : "1024 - EF_FIBERCAMERA" : "fiber camera"
]
</source>
=== {{trenchbroom|2}} ===
<source lang=c>
effects(flags) : "Effect Flags"  =
[
	0 : "0 - None"
	1 : "1 - EF_BRIGHTFIELD: swirling cloud of particles"
	2 : "2 - EF_MUZZLEFLASH: single frame ELIGHT on entity attachment 0"
	4 : "4 - EF_BRIGHTLIGHT: DLIGHT centered at entity origin"
	8 : "8 - EF_DIMLIGHT : player flashlight"
	16 : "16 - EF_INVLIGHT : get lighting from ceiling, instead of from floor"
	32 : "32 - EF_NOINTERP : don't interpolate the next frame"
	64 : "64 - EF_LIGHT : rocket flare glow sprite"
	128 : "128 - EF_NODRAW : don't draw entity"
	256 : "256 - EF_NIGHTVISION : player nightvision"
	512 : "512 - EF_SNIPERLASER : sniper laser effect"
	1024 : "1024 - EF_FIBERCAMERA : fiber camera"
]
</source>

[[Category:Flags]]