func_conveyor_bms

func_conveyor_bms is an e2 available in Black Mesa.

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It functions as a conveyor belt, with a moving surface. The surface material should have a ConveyorScroll Material Proxy, to synchronize the material movement and push effect. The main difference between func_conveyor_bms and func_conveyor is that it can interact with VPhysics objects and not only QPhysics objects, it is also have some inputs that allow more slightly control conveyor state.

An example of how it works.

Keyvalues

Move Direction (Pitch Yaw Roll) (movedir) <angle>

The direction conveyor moves.

Conveyor Speed (speed) <string>

Linear speed of moving surface.

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Flags

Push : [1]

Disable pushing if flag is unchecked.

Inputs

ReverseDirection <void> !FGD

Reverse direction of conveyor.

Activate <void> !FGD

Activate the conveyor.

Deactivate <void> !FGD

Deactivate the conveyor.

Toggle <void> !FGD

Toggle the conveyor current state.

SetDamageFilter <targetnameRedirectInput/string>

Sets a filter for this entity for when it receives damage.

EnableDamageForces

Allows the entity to be pushed by damage done to it (usually force amount correlates with the damage done).

DisableDamageForces

Prevents the entity from being pushed by damage done to it.

Todo: move/mention at proper place

Issues

Levitating objects

It seems that conveyor not really push objects, it seems that conveyor just create pulling point between object and conveyor surface and than pull object along a given direction. This method creates unrealistic physics behavior of objects, as in the gif, it was initially expected that the box during pushing would take the same angle of inclination as that of the conveyor, but instead the box seemed to levitate through the air.

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  An example.
  

Doesn't work with client side ragdolls

This is one of many brush entities that can't hold client side ragdolls, this means that NPC's ragdolls will fall through such entity. In this case this problem most relevant in Interloper, where the corpses of unarmored alien grunts fall through a conveyor belt. The only way to fix this is use trigger_serverragdoll, however in this case ragdolls will not gib.

• 

  An example in Interloper chapter.
  

• 

  An example in We've Got Hostiles chapter.
  

NPCs with low speed may stuck

If you don’t monitor the speed of conveyor or NPC - this may cause situations like in the gif. Avoid this by increasing the speed for NPC or decreasing the speed of conveyor.

• 

  An example in We've Got Hostiles chapter.
  

Tripmines doesn't explode

Expected that tripmine placed on activated conveyor will explode, but this doesn't happen at all. There is no workarounds, because of triggers doesn't interact with tripmines while tripmines is not active.

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  An example in dm_darn_mini_r2.