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Entity:IsLineOfSightClear

  boolean Entity:IsLineOfSightClear( Vector target )
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Description

Returns true if the target is in line of sight.

This will only work when called on CBaseCombatCharacter entities. This includes players, NPCs, grenades, RPG rockets, crossbow bolts, and physics cannisters.

Arguments

1 Vector target
The target to test. You can also supply an Entity instead of a Vector

Returns

1 boolean
Returns true if the line of sight is clear

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