This hook is predicted. This means that in singleplayer, it will not be called in the Client realm.
Called when a player attempts to fire their tool gun. Return true to specifically allow the attempt, false to block it.
1 Player ply
The player who attempted to use their toolgun.
2 table tr
A trace from the players eye to where in the world their crosshair/cursor is pointing. See Structures/TraceResult
3 string toolname
The tool mode the player currently has selected.
4 table tool
The tool mode table the player currently has selected.
5 number button
The tool button pressed.
Can use toolgun or not.