~~NOTOC~~
<=[[4rpl:start| Index]] \\
<=[[4rpl:start#beams| Beams]]

====== IsBeam ======
IsBeam(<-beamUID)

===== Description =====
Checks to see if beamUID represents a valid beam.  If the beam has been destroyed or points to something other than a beam, false is returned.

===== Examples =====
<code 4rpl>
once
   GetUnitPosition(self) ->unitPos
   #Fire a beam to extends off screen but is at the same height as the unit
   #We will attach the beam to ourselves, so that the start point is relative to our unit
   3 ->brightness
   4 ->width
   CreateBeam("orange" <-brightness <-width) ->beam
   AttachBeam(<-beam self "")
   SetBeamStart(<-beam V3(0 0 0))
   SetBeamEnd(<-beam V3(10000 0 10000))
endonce

print2("Beam Valid: " IsBeam(<-beam))

</code>
<=[[4rpl:start| Index]]