Seven Towers: UCC Reference

USECODE INTRINSICS

UI_infravision(actor npc, bool onoff)
npc->infravision(bool onoff)

Toggles infravision for the given NPC.

`npc`	The NPC that should have infravision toggled. This intrinsic has effect only for party members.
`onoff`	Flag specifying whether we want infravision or not: `true` to turn it on, `false` to turn it off.