Reference: Half-Life entity class hierarchy Last edited 5 months ago2024-06-24 13:34:39 UTC

This page shows the class hierarchy of the entities in Half-Life. This can provide glimpses into the workings behind the entities, and also entity aliases.

Comparing this with the entity definitions in the FGD can explain why some entities properties in it doesn't work in game, because the FGD isn't mirroring the class hierarchy exactly.

(* marks entities that aren't available in the FGD, and mostly shouldn't be placed into a map with the map editors.)

C++ CLASS NAME AND HIERARCHY                        ENTITY_CLASSNAME
=====================================================================
CBaseEntity
    CAmbientGeneric .   .   .   .   .   .   .   .   (ambient_generic)

    CBaseDelay  .   .   .   .   .   .   .   .   .   (*DelayedUse)
        CBaseAnimating
            CBaseToggle
                CBaseMonster
                    CApache .   .   .   .   .   .   (monster_apache)
                    CBarnacle   .   .   .   .   .   (monster_barnacle)
                    CBaseTurret
                        CTurret .   .   .   .   .   (monster_turret)
                        CMiniTurret .   .   .   .   (monster_miniturret)
                        CSentry .   .   .   .   .   (monster_sentry)
                    CBasePlayer .   .   .   .   .   (*player)
                    CBigMomma   .   .   .   .   .   (monster_bigmomma)
                    CBloater    .   .   .   .   .   (monster_bloater)
                    CBullsquid  .   .   .   .   .   (monster_bullchicken)
                    CCineMonster    .   .   .   .   (scripted_sequence)
                        CCineAI .   .   .   .   .   (aiscripted_sequence)
                    CControllerHeadBall .   .   .   (*controller_head_ball)
                    CControllerZapBall  .   .   .   (*controller_energy_ball)
                    CCycler
                        CGenericCycler  .   .   .   (cycler)
                        CCyclerProbe    .   .   .   (*cycler_prdroid)
                    CDeadBarney .   .   .   .   .   (monster_barney_dead)
                    CDeadHEV    .   .   .   .   .   (monster_hev_dead)
                    CDeadHGrunt .   .   .   .   .   (monster_hgrunt_dead)
                    CDeadScientist  .   .   .   .   (monster_scientist_dead)
                    CEnvExplosion   .   .   .   .   (env_explosion)
                    CFlockingFlyer  .   .   .   .   (*monster_flyer)
                    CFlockingFlyerFlock .   .   .   (monster_flyer_flock)
                    CFlyingMonster
                        CIchthyosaur    .   .   .   (monster_ichthyosaur)
                    CFurniture  .   .   .   .   .   (monster_furniture)
                    CGargantua  .   .   .   .   .   (monster_gargantua)
                    CGenericMonster .   .   .   .   (monster_generic)
                    CGman   .   .   .   .   .   .   (monster_gman)
                    CGrenade    .   .   .   .   .   (*grenade)
                        CApacheHVR  .   .   .   .   (*hvr_rocket)
                        CAirtank    .   .   .   .   (item_airtank)
                        CMortar .   .   .   .   .   (monster_mortar)
                        CSatchelCharge  .   .   .   (monster_satchel)
                        CSqueakGrenade  .   .   .   (monster_snark)
                        CTripmineGrenade    .   .   (monster_tripmine)
                        CRpgRocket  .   .   .   .   (*rpg_rocket)
                    CGunTarget  .   .   .   .   .   (func_guntarget)
                    CHAssassin  .   .   .   .   .   (monster_human_assassin)
                    CHeadCrab   .   .   .   .   .   (monster_headcrab)
                        CBabyCrab   .   .   .   .   (monster_babycrab)
                    CHGruntRepel    .   .   .   .   (monster_grunt_repel)
                    CHornet .   .   .   .   .   .   (*hornet)
                    CLeech  .   .   .   .   .   .   (monster_leech)
                    CMonstermaker   .   .   .   .   (monstermaker)
                    CNihilanth  .   .   .   .   .   (monster_nihilanth)
                    CNihilanthHVR   .   .   .   .   (nihilanth_energy_ball)
                    COsprey .   .   .   .   .   .   (monster_osprey)
                    CPlayerMonster  .   .   .   .   (monster_player)
                    CRat    .   .   .   .   .   .   (monster_rat)
                    CRoach  .   .   .   .   .   .   (monster_cockroach)
                    CSquadMonster
                        CAGrunt .   .   .   .   .   (monster_alien_grunt)
                        CController .   .   .   .   (monster_alien_controller)
                        CHGrunt .   .   .   .   .   (monster_human_grunt)
                        CHoundeye   .   .   .   .   (monster_houndeye)
                        CISlave .   .   .   .   .   (monster_alien_slave, monster_vortigaunt)
                    CTalkMonster
                        CBarney .   .   .   .   .   (monster_barney)
                        CScientist  .   .   .   .   (monster_scientist)
                            CSittingScientist   .   (monster_sitting_scientist)
                    CTentacle   .   .   .   .   .   (monster_tentacle)
                    CTentacleMaw    .   .   .   .   (*monster_tentaclemaw)
                    CTestHull   .   .   .   .   .   (*testhull)
                    CWreckage   .   .   .   .   .   (cycler_wreckage)
                    CZombie .   .   .   .   .   .   (monster_zombie)

                // CBasetoggle
                CBaseButton .   .   .   .   .   .   (func_button)
                    CRotButton  .   .   .   .   .   (func_rot_button)
                CBaseDoor   .   .   .   .   .   .   (func_door, func_water)
                    CRotDoor    .   .   .   .   .   (func_door_rotating)
                CBasePlatTrain
                    CFuncPlat   .   .   .   .   .   (func_plat)
                        CFuncPlatRot    .   .   .   (func_platrot)
                            CFuncTrackChange    .   (func_trackchange)
                                CFuncTrackAuto  .   (func_trackautochange)
                    CFuncTrain  .   .   .   .   .   (func_train)
                CBaseTrigger    .   .   .   .   .   (*trigger)
                    CChangeLevel    .   .   .   .   (trigger_changelevel)
                    CLadder .   .   .   .   .   .   (func_ladder)
                    CTriggerCDAudio .   .   .   .   (trigger_cdaudio)
                    CTriggerCounter .   .   .   .   (trigger_counter)
                    CTriggerHurt    .   .   .   .   (trigger_hurt)
                    CTriggerMonsterJump .   .   .   (trigger_monsterjump)
                    CTriggerMultiple    .   .   .   (trigger_multiple)
                        CTriggerOnce    .   .   .   (trigger_once)
                    CTriggerPush    .   .   .   .   (trigger_push)
                    CTriggerTeleport    .   .   .   (trigger_teleport)
                    CTriggerSave    .   .   .   .   (trigger_autosave)
                    CTriggerEndSection  .   .   .   (trigger_endsection)
                    CTriggerGravity .   .   .   .   (trigger_gravity)
                CFuncIllusionary    .   .   .   .   (func_illusionary)
                CFuncMortarField    .   .   .   .   (func_mortar_field)
                CMomentaryDoor  .   .   .   .   .   (momentary_door)
                CMomentaryRotButton .   .   .   .   (momentary_rot_button)
                CMultiManager   .   .   .   .   .   (multi_manager)
                CRecharge   .   .   .   .   .   .   (func_recharge)
                CScriptedSentence   .   .   .   .   (scripted_sentence)
                CWallHealth .   .   .   .   .   .   (func_healthcharger)

            //CBaseAnimating
            CBasePlayerItem
                CBasePlayerWeapon
                    CWeaponCycler   .   .   .   .   (cycler_weapon)
                    CGlock  .   .   .   .   .   .   (weapon_glock, weapon_9mmhandgun)
                    CCrowbar    .   .   .   .   .   (weapon_crowbar)
                    CPython .   .   .   .   .   .   (weapon_python, weapon_357)
                    CMP5    .   .   .   .   .   .   (weapon_mp5, weapon_9mmAR)
                    CCrossbow   .   .   .   .   .   (weapon_crossbow)
                    CShotgun    .   .   .   .   .   (weapon_shotgun)
                    CRpg    .   .   .   .   .   .   (weapon_rpg)
                    CGauss  .   .   .   .   .   .   (weapon_gauss)
                    CEgon   .   .   .   .   .   .   (weapon_egon)
                    CHgun   .   .   .   .   .   .   (weapon_hornetgun)
                    CHandGrenade    .   .   .   .   (weapon_handgrenade)
                    CSatchel    .   .   .   .   .   (weapon_satchel)
                    CTripmine   .   .   .   .   .   (weapon_tripmine)
                    CSqueak .   .   .   .   .   .   (monster_snark)

            CActAnimating
                CXenPLight  .   .   .   .   .   .   (xen_plantlight)
                CXenHair    .   .   .   .   .   .   (xen_hair)
                CXenTree    .   .   .   .   .   .   (xen_tree)
                CXenSpore
                    CXenSporeSmall  .   .   .   .   (xen_spore_small)
                    CXenSporeMed    .   .   .   .   (xen_spore_medium)
                    CXenSporeLarge  .   .   .   .   (xen_spore_large)

        // CBaseDelay
        CAutoTrigger    .   .   .   .   .   .   .   (trigger_auto)
        CBreakable  .   .   .   .   .   .   .   .   (func_breakable)
            CPushable   .   .   .   .   .   .   .   (func_pushable)
        CEnvBeverage    .   .   .   .   .   .   .   (env_beverage)
        CEnvFunnel  .   .   .   .   .   .   .   .   (env_funnel)
        CFireAndDie .   .   .   .   .   .   .   .   (*fireanddie)
        CGibShooter .   .   .   .   .   .   .   .   (gibshooter)
            CEnvShooter .   .   .   .   .   .   .   (env_shooter)
        CItemSoda   .   .   .   .   .   .   .   .   (item_sodacan)
        CTestEffect .   .   .   .   .   .   .   .   (test_effect)
        CTriggerCamera  .   .   .   .   .   .   .   (trigger_camera)
        CTriggerChangeTarget    .   .   .   .   .   (trigger_changetarget)
        CTriggerRelay   .   .   .   .   .   .   .   (trigger_relay)

    CBasePlayerAmmo
        CCrossbowAmmo   .   .   .   .   .   .   .   (ammo_crossbow)
        CEgonAmmo   .   .   .   .   .   .   .   .   (*ammo_egonclip) // unused, uses ammo_gaussclip instead
        CGaussAmmo  .   .   .   .   .   .   .   .   (ammo_gaussclip)
        CGlockAmmo  .   .   .   .   .   .   .   .   (ammo_glockclip, ammo_9mmclip)
        CMP5AmmoClip    .   .   .   .   .   .   .   (ammo_mp5clip, ammo_9mmAR)
        CMP5ChainAmmo   .   .   .   .   .   .   .   (ammo_9mmbox)
        CMP5AmmoGrenade .   .   .   .   .   .   .   (ammo_mp5grenades, ammo_ARgrenades)
        CPythonAmmo .   .   .   .   .   .   .   .   (ammo_357)
        CRpgAmmo    .   .   .   .   .   .   .   .   (ammo_rpgclip)
        CShotgunAmmo    .   .   .   .   .   .   .   (ammo_buckshot)

    CBaseSpectator

    CBeam   .   .   .   .   .   .   .   .   .   .   (*beam)
        CLightning  .   .   .   .   .   .   .   .   (env_beam, env_lightning)
            CTripBeam   .   .   .   .   .   .   .   (*trip_beam)
        CLaser  .   .   .   .   .   .   .   .   .   (env_laser)

    CBloodSplat
    CBMortar    .   .   .   .   .   .   .   .   .   (*bmortar) // big momma blob
    CBubbling   .   .   .   .   .   .   .   .   .   (env_bubbles)
    CButtonTarget   .   .   .   .   .   .   .   .   (button_target)
    CCorpse .   .   .   .   .   .   .   .   .   .   (*bodyque)
    CCrossbowBolt   .   .   .   .   .   .   .   .   (*crossbow_bolt)
    CCyclerSprite   .   .   .   .   .   .   .   .   (cycler_sprite)
    CDecal  .   .   .   .   .   .   .   .   .   .   (infodecal)
    CFrictionModifier   .   .   .   .   .   .   .   (func_friction)
    CFuncRotating   .   .   .   .   .   .   .   .   (func_rotating)

    CFuncTank
        CFuncTankGun    .   .   .   .   .   .   .   (func_tank)
        CFuncTankLaser  .   .   .   .   .   .   .   (func_tanklaser)
        CFuncTankMortar .   .   .   .   .   .   .   (func_tankmortar)
        CFuncTankRocket .   .   .   .   .   .   .   (func_tankrocket)

    CFuncTankControls   .   .   .   .   .   .   .   (func_tankcontrols)
    CFuncTrackTrain .   .   .   .   .   .   .   .   (func_tracktrain)
    CFuncTrainControls  .   .   .   .   .   .   .   (func_traincontrols)

    CFuncWall   .   .   .   .   .   .   .   .   .   (func_wall)
        CFuncConveyor   .   .   .   .   .   .   .   (func_conveyor)
        CFuncMonsterClip    .   .   .   .   .   .   (func_monsterclip)
        CFuncWallToggle .   .   .   .   .   .   .   (func_wall_toggle)

    CItem
        CHealthKit      .   .   .   .   .   .   .   (item_healthkit)
        CItemAntidote   .   .   .   .   .   .   .   (item_antidote)
        CItemBattery    .   .   .   .   .   .   .   (item_battery)
        CItemLongJump   .   .   .   .   .   .   .   (item_longjump)
        CItemSecurity   .   .   .   .   .   .   .   (item_security)
        CItemSuit   .   .   .   .   .   .   .   .   (item_suit)

    CLaserSpot  .   .   .   .   .   .   .   .   .   (*laser_spot)
    CNodeViewer .   .   .   .   .   .   .   .   .   (*node_viewer,
                                                     *node_viewer_human,
                                                     *node_viewer_fly,
                                                     *node_viewer_large)
    CNodeEnt    .   .   .   .   .   .   .   .   .   (info_node, info_node_air)
    CNullEntity .   .   .   .   .   .   .   .   .   (info_null)
    CPendulum   .   .   .   .   .   .   .   .   .   (func_pendulum)
    CPlatTrigger

    CPointEntity    .   .   .   .   .   .   .   .   (info_landmark,
                                                     info_player_start,
                                                     info_target,
                                                     info_teleport_destination)
        CBaseDMStart    .   .   .   .   .   .   .   (info_player_deathmatch)
        CBlood  .   .   .   .   .   .   .   .   .   (env_blood)
        CEnvGlobal  .   .   .   .   .   .   .   .   (env_global)
        CEnvSound   .   .   .   .   .   .   .   .   (env_sound)
        CEnvSpark   .   .   .   .   .   .   .   .   (env_spark, env_debris)
        CFade   .   .   .   .   .   .   .   .   .   (env_glow)
        CGlow   .   .   .   .   .   .   .   .   .   (env_glow)
        CInfoBM .   .   .   .   .   .   .   .   .   (info_bigmomma)
        CInfoIntermission   .   .   .   .   .   .   (info_intermission)
        CLight  .   .   .   .   .   .   .   .   .   (light, light_spot)
            CEnvLight   .   .   .   .   .   .   .   (light_environment)
        CMultiSource    .   .   .   .   .   .   .   (multisource)
        CMessage    .   .   .   .   .   .   .   .   (env_message)
        CPathCorner .   .   .   .   .   .   .   .   (path_corner)
        CPathTrack  .   .   .   .   .   .   .   .   (path_track)
        CRevertSaved    .   .   .   .   .   .   .   (player_loadsaved)
        CShake  .   .   .   .   .   .   .   .   .   (env_shake)
        CSprite .   .   .   .   .   .   .   .   .   (env_sprite)
        CStripWeapons   .   .   .   .   .   .   .   (player_weaponstrip)
        CTargetCDAudio  .   .   .   .   .   .   .   (target_cdaudio)
        CTriggerVolume  .   .   .   .   .   .   .   (trigger_transition)
        CXenHull

    CRenderFxManager    .   .   .   .   .   .   .   (env_render)

    CRuleEntity
        CRulePointEntity
            CGameCounter    .   .   .   .   .   .   (game_counter)
            CGameCounterSet .   .   .   .   .   .   (game_counter_set)
            CGameEnd    .   .   .   .   .   .   .   (game_end)
            CGameScore  .   .   .   .   .   .   .   (game_score)
            CGamePlayerHurt .   .   .   .   .   .   (game_player_hurt)
            CGamePlayerEquip    .   .   .   .   .   (game_player_equip)
            CGamePlayerTeam .   .   .   .   .   .   (game_player_team)
            CGameTeamMaster .   .   .   .   .   .   (game_team_master)
            CGameTeamSet    .   .   .   .   .   .   (game_team_set)
            CGameText   .   .   .   .   .   .   .   (game_text)
        CRuleBrushEntity
            CGamePlayerZone .   .   .   .   .   .   (game_zone_player)

    CShower .   .   .   .   .   .   .   .   .   .   (*spark_shower)
    CSmoker .   .   .   .   .   .   .   .   .   .   (env_smoker)
    CSoundEnt   .   .   .   .   .   .   .   .   .   (*soundent)
    CSpeaker    .   .   .   .   .   .   .   .   .   (speaker)
    CSpiral .   .   .   .   .   .   .   .   .   .   (*streak_spiral)
    CSprayCan
    CSquidSpit  .   .   .   .   .   .   .   .   .   (*squidspit)
    CStomp  .   .   .   .   .   .   .   .   .   .   (*garg_stomp)
    CWeaponBox  .   .   .   .   .   .   .   .   .   (weaponbox)
    CWorld  .   .   .   .   .   .   .   .   .   .   (worldspawn)
    CWorldItem  .   .   .   .   .   .   .   .   .   (world_items)
    CXenTreeTrigger .   .   .   .   .   .   .   .   (*xen_ttrigger)