GridNav 
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CanFindPath(startVector, endVector): bool
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Determine if it is possible to reach the specified end point from the specified start point. bool.
DestroyTreesAroundPoint(arg1Vector, arg2float, arg3bool): nil
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Destroy all trees in the area(vPosition, flRadius, bFullCollision.
FindPathLength(startVector, endVector): float
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Find a path between the two points an return the length of the path. If there is not a path between the points the returned value will be -1.
GetAllTreesAroundPoint(positionVector, radiusfloat, fullCollisionbool): [CDOTA_MapTree]
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Returns a table full of tree HSCRIPTS.
GridPosToWorldCenterX(arg1int): float
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Get the X position of the center of a given X index.
GridPosToWorldCenterY(arg1int): float
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Get the Y position of the center of a given Y index.
IsBlocked(arg1Vector): bool
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Checks whether the given position is blocked.
IsNearbyTree(positionVector, radiusfloat, checkFullTreeRadiusbool): bool
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Checks whether there are any trees overlapping the given point.
IsTraversable(arg1Vector): bool
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Checks whether the given position is traversable.
RegrowAllTrees(): nil
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Causes all trees in the map to regrow.
WorldToGridPosX(arg1float): int
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Get the X index of a given world X position.
WorldToGridPosY(arg1float): int
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Get the Y index of a given world Y position.