ai_hint

This entity is not in the FGD by default.
It should not be put directly in a map.

Class hierarchy
CAI_Hint ↳CServerOnlyEntity ↳CBaseEntity
`ai_hint.cpp`

ai_hint is a point entity available in all Source games except Left 4 Dead series. When an info_hint, info_node_hint or info_node_air_hint has a Hint (hinttype) other than None, this entity will be created in place of it and retain much of the former entity's data, including targetname and IO.

Keyvalues

Name (targetname) <string>: The name that other entities refer to this entity by, via Inputs/Outputs or other keyvalues (e.g. parentname or target).
Also displayed in Hammer's 2D views and Entity Report. See also: Generic Keyvalues, Inputs and Outputs available to all entities

Node FOV (nodeFOV) <float>: In order for an NPC to use this node, the NPC must be within the node's FOV (which is centered on the Pitch Yaw Roll (angles)). Any number may be entered. 360 means any angle is acceptable.

OnNPCStartedUsing <void>: Fired when an NPC starts using this hint node as part of an actbusy. Automatically puts the targetname of the NPC as the input parameter, unless overridden by the mapper..

OnNPCStoppedUsing <void>: Fired when an NPC stops using this hint node as part of an actbusy. Automatically puts the targetname of the NPC as the input parameter, unless overridden by the mapper.

Cvar/Command	Parameters or default value	Descriptor	Effect
`ai_drop_hint`	`int`	Hint Type	Creates an `ai_hint` with the origin and angles of the player camera. If no number is included, it prints a list of valid types.