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| {{langsp}}It is a stationary, ceiling-mounted 'fishing' monster that tries to eat anything its tongue touches. | | {{APH|npc_barnacle}} |
| Barnacles were originally devised in [[Half-Life]] as a simple way to limit movement in levels, and their function remains relatively the same in [[Half-Life 2]].
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| {{ModernPlacementTip|Most players will prefer not to get caught by a barnacle, and prefer avoiding it altogether, so unless it would be part of a puzzle, you might want to provide a way to get past the barnacle without killing it.}}
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| {{NPCNote}}
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| {{warning|You must build structures from player clip similar to those in the picture, otherwise if barnacle grabs player - player may get stuck and barnacle will eventually release him. In {{Bms|4}} this case cause to a very severe breakdown of barnacle.
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| <br>
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| <gallery mode=packed heights=320px>
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| File:PCAB_HammerPicture.png| frame | An example from d1_canals_02.
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| File:PCAB_WithPC.gif| frame | With player clip.
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| File:PCAB_WithoutPC.gif| frame | Without player clip.
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| File:PCAB_BlackMesaBug.gif| frame | Black Mesa bug example in bm_c1a4b.
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| </gallery>
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| }}
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| {{Note|Initially, barnacle can only grab and eat only chosen in game code NPCs. Can be customized using relationships.}}
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| ==Dedicated Console Variables==
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| ;sk_barnacle_health <[[int]]>
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| : Barnacle spawn health. Default: 35.
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| ;npc_barnacle_swallow <[[bool]]>
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| : Enable prototype swallow code. This makes the ragdolled yummy play the <code>ACT_GESTURE_BARNACLE_STRANGLE</code> [[activity]]. Cut in {{Bms|4}}.
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| {{KV|sk_barnacle_357_dmg_scale|intn= |float|Magnum damage scale. Default: 1.|only=BMS}}
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| {{KV|sk_barnacle_blunt_dmg_scale|intn= |float|Blunt damage scale. Default: 1.|only=BMS}}
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| {{KV|sk_barnacle_buckshot_dmg_scale|intn= |float|Buckshot damage scale. Default: 1.|only=BMS}}
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| {{KV|sk_barnacle_bullet_dmg_scale|intn= |float|Bullet damage scale. Default: 1.|only=BMS}}
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| ==Keyvalues==
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| ; Rest Distance <code><[[float]]></code>
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| : Distance above the ground that the tongue should lie when the barnacle is at rest
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| {{KV BaseNPC}}
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| ==Flags==
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| {{Fl BaseNPC}}
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| * {{Fl|65536|Cheap death|Don't puke gibs.}}
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| * {{Fl|131072|Ambush Mode|Don't start with tongue down.}}
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| * {{Fl|262144|Tongue will not penetate water|Barnacle's tongue will not penetrate water if this flag used.|only=BMS}}
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| * {{Fl|524288|Don't spawn human skull on death|Barnacle will not spawn human skull on death if this flag used. Mainly used for levels in Xen.|only=BMS}}
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| ==Inputs==
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| {{IO|DropTongue|param=void|Drop tongue towards the ground. Use in conjunction with Ambush Mode spawnflag.}}
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| {{IO|SetDropTongueSpeed|param=int|Set Drop Tongue speed.}}
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| {{IO|LetGo|param=void|Let go of anything I am holding.}}
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| {{IO|TongueTipUpdated|param=void| |only=BMS}}
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| {{I BaseNPC}}
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| ==Outputs==
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| {{IO|OnGrab|param=void| }}
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| {{IO|OnRelease|param=void|Fired when I attach/detach my tongue to/from something.}}
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| {{O BaseNPC}}
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| ==Issues==
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| ===All===
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| ====Grab itown gibs====
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| Barnacle grab itown gibs (which appear after barnacle ate its enemy), fixed in {{P2CE|4}}.
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| ==={{bms|4|nt=2}}===
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| {{note|Most of this issues are not available in {{bms|4|nt=1}}.}}
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| ====Broken behavior if player stuck when barnacle pull player====
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| Instead of player release, in {{Bms|4}} this case cause to a very severe breakdown of barnacle.
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| <br>
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| <gallery mode=packed heights=720px>
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| File:PCAB_BlackMesaBug.gif| frame | Bug example in bm_c1a4b.
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| </gallery>
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| ====Tongue attaching is broken====
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| In {{Bms|4}} tongue attaching to player center for most cases, this is why it passes through player's camera.
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| <br>
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| <gallery mode=packed heights=720px>
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| File:BruhHAHA.png| frame | An example <code>bm_c1a4b</code>.
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| </gallery>
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| ====<code>TongueTipUpdated</code> input every 0.01 seconds====
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| In {{Bms|4}} this NPC spams TongueTipUpdated input every 0.01 seconds.
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| ====Pulling is broken====
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| Sometimes it may not pull player for a few seconds, and then suddenly and quickly pull player.
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| ====Grabbed NPCs disappear if barnacle die====
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| If kill barnacle who has grabbed an enemy - the enemy's body will instantly disappear, unlike {{hl2|4}} and {{bms|4|nt=1}} version.
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| ====Eats whole zombie====
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| Barnacle eats whole zombie, in {{hl2|4}} and {{bms|4|nt=1}} barnacle eats only headcrab and than drop zombie body. This does not depend on the type of zombie, it works with any zombie type.
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| ==={{hl2|4}} and {{portal|4}}===
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| ====Some NPCs becomes invisible====
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| Some NPCs becomes invisible if barnacle eat them.
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| ====Some NPCs cause crash====
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| Eating or grabbing of [[npc_combine_camera]], [[npc_advisor]], [[npc_rollermine]] or [[npc_poisonzombie]] will cause game crash.
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| {{confirm|Is there more NPCs that cause crash if barnacle eating or grabbing them ?}}
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| ==={{portal|4}}===
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| ====Rocket turret create broken ragdoll====
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| In {{Portal|4}} if barnacle grab [[npc_rocket_turret]] - [[npc_rocket_turret]] turns into a broken ragdoll, which has very broken physics.
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| {{workaround| Fix the model or make barnacle friendly to [[npc_rocket_turret]].}}
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| <br>
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| <gallery mode=packed heights=720px>
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| File:PortalIssue1.gif| frame | An example in <code>d1_canals_01a</code>.
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| </gallery>
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| ====Barnacle's gibs doesn't go through portals on spawn====
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| Barnacle's gibs doesn't go through portals because of gibs use <code>[4] : Debris</code> spawnflag, with this flag physics objects use simple physics on spawn that doesn't allow them to go through portals.
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| <br>
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| <gallery mode=packed heights=720px>
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| File:PortalIssue2.gif| frame | An example in <code>d1_canals_01a</code>.
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| </gallery>
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| ====Barnacle's blood doesn't go through portals====
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| If you'll kill barnacle that placed above linked portal - the blood decal will not be teleported.
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| <br>
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| <gallery mode=packed heights=420px>
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| File:PortalIssue3_1.jpg| frame | An example in <code>d1_canals_01a</code>.
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| File:PortalIssue3_2.jpg| frame | An example in <code>d1_canals_01a</code>.
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| </gallery>
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