Seem to be having problems with this still. It seems like every time I change a value in the main constructor objects array, it also changes the array values in the copies.
Are these copies essentially just pointers to the same array? Basically the reason I need copies is so it can simulate future moves in the game by updating a copy of the game state arrays. So essentially I need to create copies of these arrays that I can manipulate without these manipulations affecting the arrays they were copied from. I hope that makes sense Thanks Paul -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mike Keesey Sent: 02 November 2006 22:53 To: 'Flashcoders mailing list' Subject: RE: [Flashcoders] Copy Constructor I might do it like this: class mypackage.Connect4State extends Object { public function Connect4State(state:Connect4State) { super(); if (state instanceof Connect4State) { copy(state); } else { board = new Array(); score = new Array(); // Default initialization code. } } public function copy(state:Connect4State):Void { board = state.board.concat(); score = state.score.concat(); } public var board:Array; public var score:Array; } Then you could call the construct with or without a parameter. (Actually, I would never use public variables, but that's another topic....) ― Mike Keesey > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:flashcoders- > [EMAIL PROTECTED] On Behalf Of Paul Steven > Sent: Thursday, November 02, 2006 2:31 PM > To: 'Flashcoders mailing list' > Subject: RE: [Flashcoders] Copy Constructor > > Perhaps it is easier if I explain what I need: > > I am rewriting some Java code into AS2. > > Basically I have a class called Connect4State > > class Connect4State { > > public function Connect4State() { > > // ------------------------- > // Initialize the board array > // -------------------------- > > board = new Array(); > > code goes here > > > // -------------------------- > // Initialize the score array > // -------------------------- > > score = new Array(); > > code goes here > } > > public var board:Array; // A 7 by 6 two dimensional array of > integers representing the state of game > > public var score:Array; // A 2 dimensional array of integers > representing the "score" for the players > > } > > The Java code has a function called a "Copy Constructor" that enables you > to > create new objects that are copies of existing objects. The copy > constructor > for Connect4State just copies the contents of each member variable. It is > necessary to have a copy constructor for Connect4State because the AI > algorithms use temporary state objects a great deal > > This is the "copy constructor" code translated to AS2 > > public function Connect4State(state:Connect4State) { > > // -------------- > // Copy the board > // -------------- > > board = new Array(); > > for (var i:Number = 0; i < 7; i++) { > > board[i] = new Array(); > > for (j:Number = 0; j < 6; j++) { > > board[i][j] = state.board[i][j]; > > } > > } > > > // --------------- > // Copy the scores > // --------------- > > for (var i:Number = 0; i < 2; i++) { > > score = new Array(); > > for (var j:Number = 0; j < winPlaces; j++) { > > score[i][j] = state.score[i][j]; > numPieces = state.numPieces; > } > > } > > > } > > AS2 seems not to like this as I get the following error > > A class must have only one constructor. > public function Connect4State(state:Connect4State) > > Anyone suggest an alternative to this "Copy Constructor"? > > > > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Paul > Steven > Sent: 02 November 2006 20:01 > To: 'Flashcoders mailing list' > Subject: [Flashcoders] Copy Constructor > > Hi there > > Is there an equivalent of the Java Copy constructor in Flash AS2? > > Thanks > > Paul > > _______________________________________________ > Flashcoders@chattyfig.figleaf.com > To change your subscription options or search the archive: > http://chattyfig.figleaf.com/mailman/listinfo/flashcoders > > Brought to you by Fig Leaf Software > Premier Authorized Adobe Consulting and Training > http://www.figleaf.com > http://training.figleaf.com > > _______________________________________________ > Flashcoders@chattyfig.figleaf.com > To change your subscription options or search the archive: > http://chattyfig.figleaf.com/mailman/listinfo/flashcoders > > Brought to you by Fig Leaf Software > Premier Authorized Adobe Consulting and Training > http://www.figleaf.com > http://training.figleaf.com _______________________________________________ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com _______________________________________________ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
