View source for Built In Functions

These are the 'built in' (ie coded in C in the Quake ''engine'') functions available in the 2021 Quake rerelease. 
{| class="wikitable"
|+
!number
!name
!return
!brief
|-
|1
|makevectors
|void
|sets v_forward, v_up, v_right from cartesian angles 
|-
|2
|setorigin
|void
|sets the 'origin; of an entity - set movetype and solid first
|-
|3
|setmodel
|void
|sets the model for an entity
|-
|4
|setsize 
|void
|sets the 'size' of an entity
|-
|6
|break
|void
|
|-
|7
|random
|float
|returns a "random" number between 0 - 1
|-
|8
|sound 
|void
|
|-
|9
|normalize
|vector
|returns a unit length vector along the given vector
|-
|10
|error
|void
|
|-
|11
|objerror
|void
|
|-
|12
|vlen
|float
|returns the length of a vector
|-
|13
|vectoyaw
|float
|
|-
|14
|[[Spawn()|spawn]]
|entity
|creates an entity
|-
|15
|remove
|void
|immediately removes an entity from the game
|-
|16
|[[traceline]]
|void
|performs a raycast and populates some variables with the results
|-
|17
|checkclient
|entity
|// returns a client to look for
|-
|18
|find 
|entity
|searches the 'world' for an entity matching criteria
|-
|19
|precache_sound
|string
|caches a sound for later use
|-
|20
|precache_model
|string
|caches a model for later use
|-
|21
|stuffcmd 
|void
|
|-
|22
|findradius 
|entity
|"finds" all entities within a given radius
|-
|23
|[[bprint]]
|void
|prints to all players
|-
|24
|[[sprint]]
|void
|prints to one player/entity
|-
|25
|[[dprint]]
|void
|debug print
|-
|26
|[[ftos]]
|string
|returns a string version of a floating point number
|-
|27
|[[vtos]]
|string
|returns a string representation of a vector
|-
|28
|coredump
|void
|// prints all edicts
|-
|29
|traceon
|void
|// turns statment trace on
|-
|30
|traceoff
|void
|
|-
|31
|eprint
|void
|// prints an entire edict
|-
|32
|walkmove
|float
|// returns TRUE or FALSE
|-
|33
|
|
|// #33 was removed
|-
|34
|droptofloor
|float
|// TRUE if landed on floor
|-
|35
|lightstyle
|void
|
|-
|36
|rint
|float
|// round to nearest int
|-
|37
|floor
|float
|// largest integer <= v
|-
|38
|ceil
|float
|// smallest integer >= v
|-
|39 
|
|
|// #was removed
|-
|40
|checkbottom
|float
|// true if self is on ground
|-
|41
|pointcontents
|float
|// returns a CONTENT_*
|-
|42
|
|
|// #42 was removed
|-
|43
|fabs 
|float
|floating point absolute value func
|-
|44
|aim 
|vector
|// returns the shooting vector
|-
|45
|cvar 
|float
|// return cvar.value
|-
|46
|localcmd 
|void
|// put string into local que
|-
|47
|nextent 
|entity
|// for looping through all ents
|-
|48
|particle 
|void
|// start a particle effect
|-
|49
|ChangeYaw
|void
|// turn towards self.ideal_yaw
|-
|50
|
|
|// #50 was removed
|-
|51
|vectoangles
|vector
|gets catesian angles from a vector
|-
|52
|WriteByte
|void
|
|-
|53
|WriteChar
|void
|
|-
|54
|WriteShort
|void
|
|-
|55
|WriteLong
|void
|
|-
|56
|WriteCoord
|void
|
|-
|57
|WriteAngle
|void
|
|-
|58
|WriteString
|void
|
|-
|59
|WriteEntity
|void
|
|-
|60
|bWriteChar
|void
|
|-
|61
|bWriteShort
|void
|
|-
|62
|bWriteLong
|void
|
|-
|63
|bWriteCoord
|void
|
|-
|64
|bWriteAngle
|void
|
|-
|65
|bWriteString
|void
|
|-
|66
|bWriteEntity 
|void
|
|-
|67
|movetogoal
|void
|
|-
|68
|precache_file
|string
|
|-
|69
|makestatic
|void
|
|-
|70
|changelevel 
|void
|
|-
|71
|
|
|//#71 was removed
|-
|72
|cvar_set 
|void
|// sets cvar.value
|-
|73
|centerprint 
|void
|prints to one player/entity in the middle of the screen
|-
|74
|ambientsound 
|void
|
|-
|75
|precache_model2
|string
|// registered version only
|-
|76
|precache_sound2
|string
|// registered version only
|-
|77
|precache_file2
|string
|// registered version only
|-
|78
|setspawnparms
|void
|// set parm1... to the
|-
|79
|finaleFinished 
|void
|
|-
|80
|localsound 
|string
|
|-
|81
|draw_point
|void 
|draws a point for debugging
|-
|82
|draw_line
|void 
|draws a line for debugging
|-
|83
|draw_arrow
|void 
|draws an arrow for debugging
|-
|84
|draw_ray
|void 
|draws a ray for debugging
|-
|85
|draw_circle
|void 
|draws circle geometry for debugging
|-
|86
|draw_bounds
|void 
|draws a bounding box for debugging
|-
|87
|draw_worldtext
|void 
|draws text geometry for debugging
|-
|88
|draw_sphere
|void 
|draws sphere geometry for debugging
|-
|89
|draw_cylinder
|void 
|draws cylinder geometry for debugging
|-
|90
|centerprint2 
|void 
|
|-
|91
|bprint2 
|void 
|
|-
|92
|sprint2 
|void 
|
|-
|99
|checkextension
|float
|
|}