sonar treasure hunt topics covered in this data structures the remove(list method the isdigit(string method the sys exit(function the game in this is the first to make use of cartesian coordinates that you learned about in the game also has data structures (which is just fancy way of saying complex variables such as those that contain lists of lists as the games you program become more complicatedyou'll need to organize your data in data structures in this gamethe player places sonar devices at various places in the ocean to locate sunken treasure chests sonar is technology that ships use to locate objects under the sea the sonar devices (in this gamewill tell the player how far away the closest treasure chest isbut not in what direction but by placing multiple sonar devices downthe player can figure out where the treasure chest is there are three chests to collectbut the player has only sixteen sonar devices to use to find them imagine that you could not see the treasure chest in the following picture because each sonar device can only find the distancenot directionthe possible places the treasure could be is anywhere in square ring around the sonar device (see figure - figure - the sonar device' square ring touches the (hiddentreasure chest