Tetris  1


Functionality:  70

Piece constructor:		20 
	  compute width, height, skirt 
	  set next to NULL 

override equals		  10  

PieceRow			  40 
	  create the list of rotations of a piece: 20 
	  there should be a loop of the form: 
			next = crt.rotate(); 
			while !crt.eqals(next) {
				  crt.next = next; 
				  crt = next; 
				  next = crt.rotate(); 
	   }
	  which sets teh pieces in a list using the next field in a piece.
	  rotation of a piece:   20
		  hardcoded to give the rotations of each piece: 10 
		  general rotation for any piece:				25 




Style and structure:      30

20 -easy to read and understand and verify overall correctness of the
underlying logic. Did not modify any otehr function to get things to
work (for example, not allowed to modify nextRotation()).