[Logic_]

Functions (Streamer):
CreateDynamicRectangle,
CreateDynamicCircle,
IsPlayerInArea

Variables:
To store the radiation zones, use a enumerator and array;

PHP код:

enum Radiation
{
    ZoneID,
    ZonePos[4]
}
new gRadiation[200][Radiation] =
{
    {0, 0, 5, 5},
    {10, 10, 15, 15}
}; 


EDIT: just an example