These are the attributes which all entities have. This is an explanation of the type 'edict_t'. Attributes are referenced by the format 'entity_name->attribute' (eg self->angle) Many of these will be familiar to QuakeC programers. NOTE - Not all of these are relevant to all entities (infact there are no entities for which all of these are relevant). name type notes absmin, absmax vec3_t position of min and max points of entity relative to the world's origin accel float acceleration of platforms activator edict_t * entity which activated the current entity air_finished float time when air will run out (when underwater) angle float entity yaw set by level editor (-1 = up; -2 = down) area link_t ? areanum, areanum2 int area where you currently are used when checking if monsters can hear sounds attenuation float attenuation of above sound (set at level edit) avelocity vec3_t angular velocity (see note for velocity) blocked void function to call when blocked? (optional) chain editc_t * used when creating a list of entities classname char * type of entity (eg 'player','monster_soldier') client struct gclient_s* points to the player controling it, NULL if not player controled clipmask int type of objects the entity will not pass through can be any of MASK_* or CONTENTS_* listed at bottom of this document clusternums int ? combattarget char * name of entity to attack (used once) count int general purpose 'amount' variable, often set in level editor damage_debounce_time float time when lava/slime can do more damage to player deadflag int state of deadness : DEAD_NO, DEAD_DYING, DEAD_DEAD, DEAD_RESPAWNABLE deathtarget char * name of entity to use when current entity dies decel float deceleration of platforms delay float time between triggering switch and effect activating die void function to call when health <= 0 (MUST be present if the entity can take damage) dmg int damage done by entity dmg_radius float area to do radius damage enemy edict_t * entity to attack flags int various attributes : FL_FLY -flying FL_SWIM -swimming, won't drown FL_IMMUNE_LASER -not hurt by laser FL_INWATER -set when entering water, cleared when leaving FL_GODMODE -god-mode on FL_NOTARGET -will not be targeted by monsters FL_IMMUNE_SLIME -not hurt by slime FL_IMMUNE_LAVA -not hurt by lava FL_PARTIAL_GROUND -ground pulled out from under monster FL_WATERJUMP -player jumping from water FL_TEAMSLAVE -not first member of a team FL_NO_KNOCKBACK -entity not thrown back by damage FL_POWER_ARMOR -active power armor FL_RESPAWN -entity waiting before re-spawning fly_sound_debounce_time float used with looping sound when pushing player (in_trigger.c) freetime float time when entity was freed-up in memory gib_health int health at which to gib :) goalentity edict_t * entity currently moving towards gravity float not used by any entites, but can be used to define reduced/ increased gravity for individual entities (normal=1.0) groundentity edict_t * what the entity is standing on groundentity_linkcount int used in conjunction with linkcount to see if the current entity is still standing on the groundentity headnode int ? health int health of entity, increased and set in many places, but should only be reduced by t_damage() ideal_yaw float yaw the entity wants to face inuse qboolean the entity exists in the world item gitem_t * info about item (see below) killtarget char * name of entity to remove when current entity triggered last_move_time float time to play earthquake sound again light_level int player's light level, used by monsters when checking if player can be seen linkcount int changed by the gi.linkentity function ? map char * filename of the next map, part of entity target_changelevel mass int used when pushing entites and calculating knock-back for weapons (eg rocket hits) max_health int maximum health message char * message when entity activated (set by level editor) mins, maxs vec3_t position of min and max points of entity relative to its origin model char * filename of entitie's model monsterinfo monsterinfo_t info about the monster (see below) move_angles vec3_t the angle that the gun turret is facing move_origin vec3_t the origin of the gun turret movedir vec3_t direction currently moving in moveinfo moveinfo_t used by the ships flying overhead movetarget edict_t * entity to wark towards when not got anything better to do (such as killing the player) movetype int how the entity moves : MOVETYPE_NONE -never moves MOVETYPE_NOCLIP -ignores walls, entities, etc. MOVETYPE_PUSH -ignores walls, pushes entities MOVETYPE_STOP -ignores walls, stops on entities MOVETYPE_WALK -affected by gravity MOVETYPE_STEP -gravity, special edge handling, used by monsters MOVETYPE_FLY -no gravity, used by flying monsters MOVETYPE_TOSS -gravity, hits ground and stops MOVETYPE_FLYMISSILE -weapons, extra clip size when hitting monsters MOVETYPE_BOUNCE -bounces (eg grenade) mynoise,mynoise2 edict_t * spawned when player makes a noise, monsters can home in on them nextthink float time at which entity should call function 'ent->think' noise_index int index of sound to play when entity is triggered noise_index2 int not used anywhere num_clusters int ? oldenemy edict_t * player they were attacking before distracted (by anither monster hitting them) pain void function to call when hurt (optional) pain_debounce_time float prevent pain sounds/anims playing to often pathtarget char * name of entity to move towards pos1 vec3_t top position of lift pos2 vec3_t bottom position of lift powerarmor_time float time to stop showing translucent shield effects prethink void function to call before each frame (optional) owner edict_t * usually the entity that spawned this entity (eg bullet is 'owned' by the monster that fired it) radius_dmg int amount of radius damage done by entity random float used to add a bit of time variation to func_timer s entity_state_t has several subtypes (see below) show_hostile qboolean any monsters seeing this one will inherit its enemy size vec3_t size of entity (vector from mins to maxs) solid solid_t solidity of entity : SOLID_NOT -no interaction with other objects SOLID_TOUCH -touch inside after moving (used for triggers) SOLID_BBOX -touch on side (monsters, etc) SOLID_BDP -bsp clip, touch on edge (for solid walls, blocks, etc) sounds int type of sounds to play - used by doors, lifts, etc spawnflags int set by level editor, some values are :SPAWNFLAG_NOT_EASY, SPAWNFLAG_NOT_MEDIUM, SPAWNFLAG_NOT_HARD, SPAWNFLAG_NOT_DEATHMATCH, SPAWNFLAG_NOT_COOP There are other possible settings, which I have not yet looked at in detail. speed float speed of misc entities, including moving buttons, the gun turret and the fly-by ships style int type of entities (eg type of health box) also used as areaportal number (something to do with separating areas) svflags int either : SVF_NOCLIENT - don't send to clients SVF_DEADMONSTER - a dead monster SVF_MONSTER - same, a bit earlier takedamgage int can the entity be damaged? : DAMAGE_NO -will not take damage DAMAGE_YES -will take damage DAMAGE_AIM -will take damage + weapons 'auto-aim' at it target char * name of entity to trigger or move towards target_ent editc_t * entity that platform/lift is moving towards targetname char * name pointed to by target team char * name of team which entity is part of teamchain edict_t * the next entity in the team teammaster edict_t * the master entity in the team teleport_time float time when monster teleported into level think void sets the function that should be called at time nextthink timestamp float used by various functions to mark the spawn time of an entity or the start of a change (eg a light ramp) touch void function to call when it touches another entity/the world (optional) touch_debounce_time float prevent touch function from being called again too quickly use void function to call when used (optional) viewheight int height above origin where eyes are found velocity vec3_t current velocity. I think this is used in the external c code to change the entity's position. Can anyone confirm whether this is internal or external? volume float volume when playing above sound (set at level edit) wait float time to wait before platform moves to the next point on its path waterlevel int height of liquid : 0 - not in liquid 1 - feet in liquid 2 - on surface of liquid 3 - surrounded by liquid watertype int type of water the entity is in (see the CONTENTS_* list at bottom of document) yaw_speed float speed to turn towards ideal yaw gitem_t referenced by 'entity_name->item.attribute' Name Type Notes ammo char * type of ammo to use classname char * name when spawning it count_width int number of digits to display by icon drop void function called when entity dropped flags int type of pickup : IT_WEAPON, IT_AMMO, IT_ARMOR icon char * filename of icon info void * ? unused pickup qboolean function called when entity picked up pickup_name char * displayed onscreen when item picked up pickup_sound char * filename of sound to play when picked up precaches char * string containing all models, sounds etc. needed by this item quantity int ammo gained by item/ammo used per shot by item tag int ? unused use void function called when entity used view_model char * filename of model when being held weaponthink void unused function world_model char * filename of model when item is sitting on level world_model_flags int copied to 'ent->s.effects' (see s.effects for values) monsterinfo_t referenced by 'entity_name->monsterinfo.attribute' Name Type Notes aiflags int controls how the monster will behave : AI_STAND_GROUND -don't move AI_TEMP_STAND_GROUND -stand ground for a short time (don't get too close to enemy?) AI_SOUND_TARGET -look for source of a sound AI_LOST_SIGHT -just lost sight of player AI_PURSUIT_LAST_SEEN - AI_PURSUE_NEXT -able to get to last sighting point this frame AI_PURSUE_TEMP -continue to persue for a bit AI_HOLD_FRAME -entity will hold the same frame (eg machine gun firing) AI_GOOD_GUY -don't attack you (prisoners) AI_BRUTAL -keep attacking until enemy's health < -80 (usualy stop at 0) AI_NOSTEP -used by exploding box AI_DUKED -monster's (pathetic) attempts to evade your shots AI_COMBAT_POINT -ignores everything else until it reaches it's destination AI_MEDIC -healing something (stop when the 'enemy's health > 0 ) AI_RESURRECTING -it's ALIVE!!! (almost) show resurection effects attack_finished float time when attack will be finished (prevents further attacks before monster is ready) attack_state int attack method the monster is using : AS_STRAIGHT -moving forwards to firing position AS_SLIDING -moving sideways to firing position AS_MELEE -close range attack AS_MISSILE -long range attack currentmove mmove_t * current set of frames cycling between idle_time float time until which the idle animation should be played last_sighting vec3_t last point where the player was seen lefty int if and attack_state is AS_SLIDING, the monster will go left otherwise it'll go right. this is swapped each time linkcount int changed by gi.linkentity? nextframe int next frame to display pausetime float time to stop at a particular path_corner power_armor_power int energy the armor has left power_armor_type int type of power armor: POWER_ARMOR_NONE, POWER_ARMOR_SCREEN, POWER_ARMOR_SHIELD 2 saved_goal vec3_t if the monster can't get to where it wants to this frame, that position is saved here scale float adjusts the running speed of the monster search_time float time to keep looking for player trail_time float timestamp of last section of player's trail found The following functions are called when certain conditions are met: attack void ranged attack (optional) checkattack qboolean function called to see if the monster will attack this frame dodge void !!INCOMING!! so just duck 'cos they wouldn't aim for your feet, would they? (optional) idle void animation to 'spice up' the standing around (optional) melee void close-up attack (optional) run void has an enemy, getting ready to attack search void searching for player animation (optional) sight void just spotted someone (optional) stand void function to call when just standing around walk void moving towards movetarget entity_state_t attributes here are referenced by 'entity_name->s.attribute' Name Type Notes angles vec3_t angles of the entity : ...angles = pitch ...angles = yaw ...angles = roll (not really used) frame int current frame effects int special effects to apply to entity can be one or more of: EF_ROTATE -rotates (bonus items) EF_GIB -leave a blood trail EF_BLASTER -coloured light + trail EF_ROCKET -coloured light + trail EF_GRENADE -smoke trail? EF_HYPERBLASTER -light + trail EF_BFG -light + particles? EF_COLOR_SHELL -coloured glow around the entity EF_POWERSCREEN -green screen EF_ANIM01 -automatically cycle between frames 0 and 1 at 2 hz EF_ANIM23 -automatically cycle between frames 2 and 3 at 2 hz EF_ANIM_ALL -automatically cycle through all frames at 2hz EF_ANIM_ALLFAST -automatically cycle through all frames at 10hz EF_FLIES -flies effect EF_QUAD -quad damage 'glow' EF_PENT -invincibility 'glow' event int effects that last one frame : EV_NONE -no effect EV_ITEM_RESPAWN -item respawning EV_FOOTSTEP -footstep noise EV_FALLSHORT -noise from small fall EV_MALE_FALL -noise from male falling EV_MALE_FALLFAR -noise from male falling a long way EV_FEMALE_FALL -noise from female falling EV_FEMALE_FALLFAR -noise from female falling a long way EV_PLAYER_TELEPORT-teleportation effects modelindex int index of precached model modelindex2 int for when one modelindex just isn't enough ;). Used with the final 2-stage boss (oops, sorry if that's a spolier) and to show separate player weapons modelindex3,4 int not used number int entity index number old_origin vec3_t last position of entity (used in a few odd places) origin vec3_t origin of the entity renderfx int various drawing effects : RF_MINLIGHT -can always see the entity RF_VIEWERMODEL -don't let the player see this (himself) RF_WEAPONMODEL -only let the current player see this RF_FULLBRIGHT -entity always fully lit RF_DEPTHHACK -for view weapon Z crunching (?!) RF_TRANSLUCENT -entity is see through RF_FRAMELERP -? used by monsters and bodies RF_BEAM -laser beam RF_CUSTOMSKIN -skin is an index in image_precache RF_GLOW -pulse lighting for bonus items RF_SHELL_RED -red glow, when monsters are resurrecting RF_SHELL_GREEN -green glow, from power shield RF_SHELL_BLUE -blue glow, not currently used skinnum int current skin number solid int set by gi.linkentity, for client-side prediction sound int to gaurentee shut-off of looping sounds CONTENTS_SOLID solid wall (not windows) CONTENTS_WINDOW windows CONTENTS_AUX ? CONTENTS_LAVA err.. lava CONTENTS_SLIME slime CONTENTS_WATER water CONTENTS_MIST !!Unused!! LAST_VISIBLE_CONTENTS ? CONTENTS_AREAPORTAL portals to conserve memory used in map designing, also dont allow sounds to pass //kami0 CONTENTS_PLAYERCLIP brush which player may not pass through //kami0 CONTENTS_MONSTERCLIP brush where monsters may not pass through //kami0 CONTENTS_CURRENT_0 flowing current moving at angle 0 //kami0 CONTENTS_CURRENT_90 flowing current moving at angle 90 //kami0 CONTENTS_CURRENT_180 flowing current moving at angle 180 //kami0 CONTENTS_CURRENT_270 flowing current moving at angle 270 //kami0 CONTENTS_CURRENT_UP flowing current moving up //kami0 CONTENTS_CURRENT_DOWN flowing current moving down //kami0 CONTENTS_ORIGIN used for rotation, invisible //kami0 CONTENTS_MONSTER non-solid monster? CONTENTS_DEADMONSTER dead monster CONTENTS_DETAIL brush that is not passed to vis - not in final BSP ? CONTENTS_TRANSLUCENT see through CONTENTS_LADDER ladder MASK_ALL -stop on anything MASK_SOLID -walls/windows MASK_PLAYERSOLID -anything you'd expect a player to stop on MASK_DEADSOLID -same as above, can go through monsters MASK_MONSTERSOLID -anything you'd expect a monster to stop on MASK_WATER -any liquid MASK_OPAQUE -walls and liquid except water (which is see-through) MASK_SHOT -walls, monsters and dead monsters MASK_CURRENT -flowing brush Written by Davo (email@example.com) (parts marked //kami0 supplied by Michael 'kami0' DiGiovanni (firstname.lastname@example.org)) If there are any corrections, bugs etc, please e-mail me. Please also note that this has been the result of searching through the c files supplied by iD, and I don't have reference to any official documents or anything, so don't assume I know what I'm talking about ;).