jens@0: /*  This code is based on Apple's "GeekGameBoard" sample code, version 1.0.
jens@0:     http://developer.apple.com/samplecode/GeekGameBoard/
jens@0:     Copyright © 2007 Apple Inc. Copyright © 2008 Jens Alfke. All Rights Reserved.
jens@0: 
jens@0:     Redistribution and use in source and binary forms, with or without modification, are permitted
jens@0:     provided that the following conditions are met:
jens@0: 
jens@0:     * Redistributions of source code must retain the above copyright notice, this list of conditions
jens@0:       and the following disclaimer.
jens@0:     * Redistributions in binary form must reproduce the above copyright notice, this list of
jens@0:       conditions and the following disclaimer in the documentation and/or other materials provided
jens@0:       with the distribution.
jens@0: 
jens@0:     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
jens@0:     IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 
jens@0:     FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRI-
jens@0:     BUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
jens@0:     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
jens@0:     PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
jens@0:     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 
jens@0:     THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
jens@0: */
jens@0: #import "TicTacToeGame.h"
jens@0: #import "Grid.h"
jens@0: #import "Dispenser.h"
jens@0: #import "Piece.h"
jens@0: #import "QuartzUtils.h"
jens@0: 
jens@0: 
jens@0: @implementation TicTacToeGame
jens@0: 
jens@1: - (void) x_createDispenser: (NSString*)imageName forPlayer: (int)playerNumber
jens@0: {
jens@0:     Piece *p = [[Piece alloc] initWithImageNamed: imageName scale: 80];
jens@0:     p.owner = [self.players objectAtIndex: playerNumber];
jens@1:     CGFloat x = floor(CGRectGetMidX(_board.bounds));
jens@1: #if TARGET_OS_ASPEN
jens@1:     x = x - 80 + 160*playerNumber;
jens@1:     CGFloat y = 360;
jens@1: #else
jens@1:     x += (playerNumber==0 ?-230 :230);
jens@1:     CGFloat y = 175;
jens@1: #endif
jens@0:     _dispenser[playerNumber] = [[Dispenser alloc] initWithPrototype: p quantity: 0
jens@1:                                                         frame: CGRectMake(x-45,y-45, 90,90)];
jens@0:     [_board addSublayer: _dispenser[playerNumber]];
jens@0: }
jens@0: 
jens@1: - (id) initWithBoard: (GGBLayer*)board
jens@0: {
jens@0:     self = [super initWithBoard: board];
jens@0:     if (self != nil) {
jens@0:         [self setNumberOfPlayers: 2];
jens@0:         
jens@0:         // Create a 3x3 grid:
jens@0:         CGFloat center = floor(CGRectGetMidX(board.bounds));
jens@1:         _grid = [[RectGrid alloc] initWithRows: 3 columns: 3 frame: CGRectMake(center-150,0, 300,300)];
jens@0:         [_grid addAllCells];
jens@0:         _grid.allowsMoves = _grid.allowsCaptures = NO;
jens@1:         _grid.cellColor = CreateGray(1.0, 0.25);
jens@0:         _grid.lineColor = kTranslucentLightGrayColor;
jens@0:         [board addSublayer: _grid];
jens@0:         
jens@0:         // Create piece dispensers for the two players:
jens@1:         [self x_createDispenser: @"X.tiff" forPlayer: 0];
jens@1:         [self x_createDispenser: @"O.tiff" forPlayer: 1];
jens@0:         
jens@0:         // And they're off!
jens@0:         [self nextPlayer];
jens@0:     }
jens@0:     return self;
jens@0: }
jens@0: 
jens@0: - (void) nextPlayer
jens@0: {
jens@0:     [super nextPlayer];
jens@0:     // Give the next player another piece to put down:
jens@0:     _dispenser[self.currentPlayer.index].quantity = 1;
jens@0: }
jens@0: 
jens@0: static Player* ownerAt( Grid *grid, int index )
jens@0: {
jens@0:     return [grid cellAtRow: index/3 column: index%3].bit.owner;
jens@0: }
jens@0: 
jens@0: /** Should return the winning player, if the current position is a win. */
jens@0: - (Player*) checkForWinner
jens@0: {
jens@0:     static const int kWinningTriples[8][3] =  { {0,1,2}, {3,4,5}, {6,7,8},  // rows
jens@0:                                                 {0,3,6}, {1,4,7}, {2,5,8},  // cols
jens@0:                                                 {0,4,8}, {2,4,6} };         // diagonals
jens@0:     for( int i=0; i<8; i++ ) {
jens@0:         const int *triple = kWinningTriples[i];
jens@0:         Player *p = ownerAt(_grid,triple[0]);
jens@0:         if( p && p == ownerAt(_grid,triple[1]) && p == ownerAt(_grid,triple[2]) )
jens@0:             return p;
jens@0:     }
jens@0:     return nil;
jens@0: }
jens@0: 
jens@0: @end