Sorry meant to paste in the trace results: Original board = 0,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2 tempState.board = 0,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2
Then after tempState.board[2][2] = 5; These are the results Original board = 0,2,2,2,2,2,2,2,2,2,2,2,2,2,5,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2 tempState.board = 0,2,2,2,2,2,2,2,2,2,2,2,2,2,5,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Paul Steven Sent: 03 November 2006 19:14 To: 'Flashcoders mailing list' Subject: RE: [Flashcoders] Copy Constructor Doing a trace I can see the copies are being affected as if they are references. I was under the impression that array.concat() made a unique copy of an array - is this not true? Here is what I traced: var tempState:Connect4State = new Connect4State(state); trace ("Original board = " + state.board); trace ("tempState.board = " + tempState.board); trace ("tempState.map = " + tempState.map); tempState.board[2][2] = 5; trace ("Original board = " + state.board); trace ("tempState.board = " + tempState.board); And the result of altering the tempState.board also altered the original board array. Could really do with some help on this one. Thanks Paul -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Paul Steven Sent: 03 November 2006 18:44 To: 'Flashcoders mailing list' Subject: RE: [Flashcoders] Copy Constructor I think the problem may be that I am recursively creating the copies..... Here are the two classes in full if anyone would be kind enough to see if they can help. Been on this all day and have made no progress http://www.mediakitchen.co.uk/Connect4Engine.as http://www.mediakitchen.co.uk/Connect4State.as Thanks Paul -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Paul Steven Sent: 03 November 2006 17:55 To: 'Flashcoders mailing list' Subject: RE: [Flashcoders] Copy Constructor 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 _______________________________________________ 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
