GroupEnumUnitsInRange(whichGroup, x, y, radius, filter): void
Adds units within radius of map coordinates X, Y who match filter to whichGroup.
A null as filter means that every nearby unit is added to group.
If the group has had units previously, it will be first cleared (old units will not be preserved).
A group that has been destroyed will not be recreated.
Adds units within radius of map coordinates X, Y who match filter to whichGroup. A null as filter means that every nearby unit is added to group.
If the group has had units previously, it will be first cleared (old units will not be preserved). A group that has been destroyed will not be recreated.