Add Trigger* FGD definitions

[tmob03]

A few triggers found without definitions in P2CE:

trigger_callback
trigger_survival_playarea
trigger_portal
trigger_super_armor
trigger_momentum_reversespeed
trigger_momentum_setspeed
trigger_momentum_teleport
trigger_momentum_userinput
trigger_fog
trigger

Note: Some of this are probably partially/non functional. In which case they should be put in engine category to hide from FGD users, or taken out of the game completely if possible.

[tmob03]

I can kind of slowly complete this myself, but would be nice if someone with code access could give me the keyvalues and Inputs/outputs of these ents, so I don't need to do a lot of fiddling and guessing with the ent_info* commands.

[craftablescience]

https://developer.valvesoftware.com/wiki/Trigger_survival_playarea

does literally nothing in p2ce

[craftablescience]

trigger_callback - zero functionality for mappers
trigger_portal - might be functional
trigger_momentum_* - identical to the versions without momentum in the name
trigger_fog - might be useful actually
trigger - probably should be internal??

so, trigger_portal and trigger_fog are really the only ones worth investigating

[craftablescience]

trigger_fog keyvalues:

color: "fogcolor"
color: "fogcolor2"
vector: "fogdir"
bool: "fogenable"
bool: "fogblend"
float: "fogstart"
float: "fogend"
float: "farz"

and looking more closely at trigger_portal its definitely meant to be internal

[tmob03]

Thanks!

[vrad-exe]

trigger_portal was an entity leftover in the SDK which p2ce re-enabled, according to the VDC it's basically just a trigger_teleport but it can reorient entity positions and velocities to a new orientation.