xash3d-fwgs/Documentation/api/client/xx-structs.md

client.dll shared structs and enums

GoldSource exposes a lot of structs to client.dll. Some of them are specific to client.dll and only used for passing data between engine and client, some of them are used in the engine everywhere, but still exposed in the public SDK. However, many mods rely on internal structs as well, and I will try to shed light on them as well.

When implementing them in C, consider the default to 32-bit systems alignment of 4 bytes and ILP32 data type model.

This file won't have API structs, for that, there should be separate chapters.

Enums

Entity types enum

This enum has no real name.

Value	Description
0	Normal entities
1	Players
2	Temp entities
3	Beams
4	Fragmented entities.

edict->solid

It matches QuakeWorld definition.

client_data_t

Used only to pass data to client.dll through HUD_UpdateClientData.

Type	Name	Description
vec3_t	origin	Local client origin. Cannot be changed by client.dll here.
vec3_t	viewangles	Local client viewangles. This and next fields can be changed by client.dll
int	iWeaponBits	Bit vector of weapons held by client.
float	fov	Local client's field of view.

netadr_t

Matches Quake-2 structure with the similar name.

local_state_t

Only consists of another structs. All of these structs are used to store prediction data, so one local_state_t for each predicted frame.

Type	Name	Description
entity_state_t	playerstate	Contains local player's entity state
clientdata_t	client	Additional information about local client. Do not get confused with client_data_t, note the underscore.
weapon_data_t[64]	weapondata	Array of 64 predictable weapons.

entity_state_t

This structure is similar to the one that can be found in QW, but contains much more data, though most of these fields are not used by the engine, but might be used by mods.

Type	Name	Description
int	entityType	Entity type (see entity type enum above)
int	number	Index of this entity on the server
float	msg_time	Server time at which this entity had been updated
int	messagenum	parsecount at which this entity had been updated
vec3_t	origin	Non-interpolated entity position
vec3_t	angles	Non-interpolated entity angles
int	modelindex	Server model index
int	sequence	Model animation sequence
int	frame	Model animation frame
int	colormap	Texture's top and bottom colors, like Quake
short	skin	Texture number
short	solid	edict->solid enum
int	effects	Bitmask of entity effects
float	scale	Entity scale value
byte	eflags
int	eflags
int	eflags
color24	eflags
int	eflags
int	eflags
float	eflags
float	eflags
int	eflags
byte[4]	eflags
byte[4]	eflags
vec3_t	eflags
vec3_t	eflags
vec3_t	eflags
vec3_t	maxs
int	eflags
int	eflags
float	eflags
float	eflags
int	eflags
int	eflags
int	eflags
qboolean	eflags
int	eflags
int	eflags
vec3_t	eflags
int	eflags
int	eflags
int	eflags
int	eflags
float	eflags
float	eflags
int	eflags
vec3_t	eflags
vec3_t	eflags
float	eflags
float	eflags
int	iuser1	Few more extra fields for mods
int	iuser2
int	iuser3
int	iuser4
float	fuser1
float	fuser2
float	fuser3
float	fuser4
vec3_t	vuser1
vec3_t	vuser2
vec3_t	vuser3
vec3_t	vuser4