Difference between revisions of "Chess Game Example"

Revision as of 07:45, 22 April 2013

This is a protected page for the Chess Game Example.

The chess game example demonstrates the creation of a chess game for two-players. The chess game has many rules and that are implemented in this example, see [chess]. The games interface is throught mouse clicks on the peices and the chess board's squares. A click on a square highlights valid user moves according to the rules of chess and the selected piece. The game is implemented with LSCs that can created in different ways, in this example, we present requirements created in two ways: one using the natural language interface to LSCs (NL-Play-In) and the other using the editor. We also review the differences between the approaches.

Game Board

Example 1 -ChessProject- LSCs created with NL-Play-In

The LSCs in this section were created with the NL-Play-In. The natural language text was parsed automatically to create the LSC.

Name	Natural Language Text	LSC
SelectSource	when the user clicks any Square, if the board sourcetargetValue is "0" and the Square type is not "vacent" then the Square selectSource and the board sourcetargetValue changes to "1".	LSC
SelectTarget	when the user clicks any Square, if the board sourcetargetValue is "1" then the Square selectTarget and the board sourcetargetValue changes to "0".	LSC
CheckPossibility	when any Square selectTarget then the Square checkPossibility.	LSC
MovePiece	when any Square checkPossibility, if the Square possibility is "true" then the Square MovePiece.	LSC
ChangeTurn	when any Square MovePiece, if the board state is "black" then the board state changes to "white" otherwise if the board state is "white" then the board state changes to "black" .	LSC
WrongTurn	when any Square selectSource, if the Square type is "black" and the board state is "white" then the Square showMessage.	LSC
WrongTurn2	when any Square selectSource, if the Square type is "white" and the board state is "black" then the Square showMessage.	LSC
ResetBoard	when any Square showMessage then the board sourcetargetValue changes to "0".	LSC
PawnPossiblePosition	when any Square selectSource, if the Square piecename is "pawn" then the Square setPossiblePawnSquares.	LSC
RookPossiblePosition	when any Square selectSource, if the Square piecename is "rook" then the Square setPossibleRookSquares .	LSC
KnightPossiblePosition	when any Square selectSource, if the Square piecename is "knight" then the Square setPossibleKnightSquares.	LSC
BishopPossiblePosition	when any Square selectSource, if the Square piecename is "bishop" then the Square setPossibleBishopSquares.	LSC
QueenPossiblePosition	when any Square selectSource, if the Square piecename is "queen" then the Square setPossibleQueenSquares .	LSC
KingPossiblePosition	when any Square selectSource, if the Square piecename is "king" then the Square setPossibleKingSquares .	LSC
checkmate	when any Square MovePiece then the Square check_CheckMate	LSC
BlkKingPosition.png	when any square MovePiece, if the square piecename is "blkking" then the board BlkkingPosition changes to the square position	LSC
WteKingPosition.png	when any square MovePiece, if the square piecename is "wteking" then the board WtekingPosition changes to the square position	LSC
Newgame	when the user click the newgame then the newgame loadnewgame and the board reset	LSC
ShowScoreblack.png	when the board state change then the BlkScore show the board blackPoint	LSC
ShowScorewhite.png	when the board state change then the WteScore show the board whitePoint	LSC
ShowNextTurn.png	when the board state change then the NextTurndisplay show the board state	LSC

Example 2 -ChessGame- LSC for the game

The following LSCs where created with the use of the editor. Our intention was to create a specification with more than one symbolic lifeline in the LSCs and possibly more than one monitored event at the chart start.

Name	Description	LSC
PieceClick	When the user click any square Sq1, and then click any square Sq2, if the board next turn is equals to the Sq1 piece type and if the Sq1 is a source then the square Sq1 check_Move square Sq2.	LSC
MovePiece	When the square Sq1 check_Move square Sq2, canmove is assigned whether the movement of piece from square Sq1 to Sq2 is possible,  if the piece canmove and Sq1 piecetype is not equals to Sq2 piecetype then the square Sq1 move_Piece to square Sq2.	LSC
Square RemovePiece	When the square Sq1 move_Piece to square Sq2,  then the square Sq2 emptyPiece the square Sq2.	LSC
NextMove	When the square Sq1 move_Piece to square Sq2, if the board next turn is "white" the board next turn changes to "black" otherwise if the board next turn is "black" the board next turn changes to "white".	LSC
SetSource	When the user click any square Sq1, if the Issource is "empty" then the square Sq1's possible positions are set and the IsSource changes to "set".	LSC
ShowMessage	When the user click any square Sq1, if the square IsSource is "empty" and the board next turn not equals the Sq1 piecetype then the square showmessage and the Issource is set to "empty".	LSC
ShowMessageReset	When the user click any square Sq1, if the square IsSource is "empty" and the board next turn not equals the Sq1 piecetype then the square showmessage and the Issource is set to "empty".	LSC
ResetPossiblePosition	When the user click any square Sq1, the square Sq1 setPossiblePosition and the user click any other square Sq2 then the Sq2 resetPossiblePosition of the Sq1.	LSC
CheckMate	When the any square Sq2 emptypiece any square Sq1, then isCheck is assigned whether there is any checkmate, if the checkmate is true then the square show the checkmate otherwise square removecheckmate.	LSC
kingposition	When the any square Sq2 emptypiece any square Sq1, if the Sq2 piecname is wteking then the Sq1 removecheckMate and the board wtekingposition is set to the Sq2 position else if the Sq2 piecname is blkking then the Sq1 removecheckMate and the board blkkingposition is set to the Sq2 position .	LSC
showturn	When the board set the Next_turn to any then the NextTurn show the board Next turn.	LSC
BlackPiecepoint	When the any square Sq2 emptypiece any square Sq1, if the board Next_turn is white then the blk_score show the black point.	LSC
WhitePiecepoint	When the any square Sq2 emptypiece any square Sq1, if the board Next_turn is black then the wte_score show the white point.	LSC
GameOver	When the any square Sq1 movePiece to any square Sq2, if the board black point is 0 then the white won the game otherwise if the board white point is 0 then the black won the game	LSC
Loadgame	when the user click NewGame then the NewGame load new game	LSC

Graph and Connections

Example1-ChessProject
 

 
Example2-ChessGame
 

Dependency graph for Example 2. This graph also shows clusters (communities). And MovePiece is selected here and the connected LSCs are colored (blue or pink). Green edges are unified messages between LSCs. Note: messages were unified here regardless of the parameters, since parameters are symbolic, e.g., MovePiece(String piecename). See LINK TO SIV for details.



 

SystemModel

 
Example1-ChessProject
 
 
Example2-ChessGame
 

Dependency graph for Example 2. This graph also shows clusters (communities). And MovePiece is selected here and the connected LSCs are colored (blue or pink). Green edges are unified messages between LSCs. Note: messages were unified here regardless of the parameters, since parameters are symbolic, e.g., MovePiece(String piecename). See LINK TO SIV for details.

Example 3 - a non working LSC

In this example, we demonstrate an LSC created, that seems to work, but will not work due to an unbound lifeline.

Name	Explanation	LSC
Square ResetHighlight	when the square sq2 is highlighed and the user click that square Sq2 then the square reset the highlight.	LSC

Since Sq2 is dynamic and there are more highlighted squares it leads to the universal binding.