Grenade spit (Black Mesa)

GoldSrc

Source Engine ( General | Half-Life: Source | Black Mesa )

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Class hierarchy
CGrenade_Spit ↳CBlackMesaBaseGrenade ↳CBlackMesaBaseDetonator ↳CBaseAnimating ↳CBaseEntity

This entity is not in the FGD by default.
It should not be put directly in a map because it can only be configured through code in Steam versions of the game. In the mod version, it is invisible if spawned like this.

grenade_spit is a model entity available in Black Mesa. The grenade entity that is used by npc_bullsquid and npc_gonarch. This is green glowing corrosive acid spit that used by some xen creatures to attack from distance. The spit is sprayed along a radius after reaching a surface or target. This entity are using 2 models, large and small. Steam versions use console variables to configure this entity, the mod version provides exclusive inputs and outputs that are cut in Steam versions of the game.

Note:It have collision for weapon bullets and the models are using concrete surface property for some reason.

Note:It explodes if hits skybox in the mod version. In Steam versions, it just disappears.

Bug:It bounce of dynamic (not physics) objects, such as prop_dynamic. Usually happens with objects that have a dynamic collision, or objects that are in motion (not in ).

Example.

Here it bounce of this metal door. The door is prop_dynamic with dynamic collision (required for animations). End particle position and position of the grenade.

Bug:Doesn't work properly with func_water_analog in Steam versions of the game. Instead of ignoring the surface of this entity, it will float in and then stop moving after few seconds. You can find this on bm_c4a3c.

Bug:Decals from this acid are glitchy on models.

Confirm:Can be fixed ?

Bug:Decals from this acid doesn't save on corpus created by NPC (client side ragdolls only).

Inputs

SetTimer <floatRedirectInput/float> (only in )

Sets amount of time before detonate.

Detonate <void> (only in )

Detonates spit.

SetThrower <void> (only in )

Fired by this entity when throwed. Doesn't do anything.

Outputs

OnDetonate <void> (only in )

Fired by this entity when detonated.

Dedicated ConVars

Note:ConVars that affects certain NPCs are not listed here.

Black Mesa

Cvar/Command	Parameters or default value	Descriptor	Effect
sk_detenator_spit_airspeed	1000	Float	Doesn't seem to affect anything.
sk_detenator_spit_gravity	400	Float	Gravity scale, also affects flight altitude. Bug:May not appear with large values.
sk_detenator_spit_plr_dmg	4	Float	Amount of damage from spit.
sk_detenator_spit_plr_dmg_radius	96	Float	Damage radius from spit.

Black Mesa (mod)

Cvar/Command	Parameters or default value	Descriptor	Effect
sk_bullsquid_spit_speed	792	Float	Speed value, also affects bullsquid's range. Bug:May not appear with large values.
sk_bullsquid_spit_dmg	4	Float	Amount of damage from spit.
sk_bullsquid_spit_radius	96	Float	Damage radius from spit.

See Also

• npc_bullsquid - the bullsquid entity
• npc_bullsquid_melee - the bullsquid entity with melee attacks only
• npc_gonarch - the gonarch entity
• npc_antlion - the antlion entity from Half-Life 2 (workers can use acid spit as well)