Lots of reworking. Completed support for game history, including Turn class. Changed Game API around quite a bit.
5 // Created by Jens Alfke on 7/3/08.
6 // Copyright 2008 Jens Alfke. All rights reserved.
17 /** Game API for subclasses to use / override */
18 @interface Game (Protected)
20 /** Should return a string describing the initial state of a new game.
21 The default value is an empty string. */
22 - (NSString*) initialStateString;
25 #pragma mark Abstract methods for subclasses to implement:
27 /** Called by -setBoard: Should all all necessary Grids/Pieces/Cards/etc. to _board.
28 This method is always called during initialization of a new Game, and may be called
29 again afterwards, for example if the board area is resized. */
32 /** Should return the winning player, if the current position is a win, else nil.
33 Default implementation returns nil. */
34 - (Player*) checkForWinner;
37 #pragma mark Protected methods for subclasses to call:
39 /** Sets the number of players in the game. Subclass initializers should call this. */
40 - (void) setNumberOfPlayers: (unsigned)n;
42 /** Animate a piece moving from src to dst. Used in implementing -applyMoveString:. */
43 - (BOOL) animateMoveFrom: (CALayer<BitHolder>*)src to: (CALayer<BitHolder>*)dst;
45 /** Animate a piece being placed in dst. Used in implementing -applyMoveString:. */
46 - (BOOL) animatePlacementIn: (CALayer<BitHolder>*)dst;
48 /** Checks for a winner and advances to the next player. */
54 /** Optional Game API for tracking the history of a game, and being able to replay moves. */
55 @interface Game (State)
57 /** A string describing the current state of the game (the positions of all pieces,
58 orderings of cards, player scores, ... */
59 @property (copy) NSString* stateString;
61 /** Add a move to the game based on the contents of the string.
62 The string must have been returned by -currentMove at some point. */
63 - (BOOL) applyMoveString: (NSString*)move;