Don't load Checkers sound files till a game is displayed on a board; this speeds up launch.
     1 /*  This code is based on Apple's "GeekGameBoard" sample code, version 1.0.
 
     2     http://developer.apple.com/samplecode/GeekGameBoard/
 
     3     Copyright © 2007 Apple Inc. Copyright © 2008 Jens Alfke. All Rights Reserved.
 
     5     Redistribution and use in source and binary forms, with or without modification, are permitted
 
     6     provided that the following conditions are met:
 
     8     * Redistributions of source code must retain the above copyright notice, this list of conditions
 
     9       and the following disclaimer.
 
    10     * Redistributions in binary form must reproduce the above copyright notice, this list of
 
    11       conditions and the following disclaimer in the documentation and/or other materials provided
 
    12       with the distribution.
 
    14     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
 
    15     IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 
 
    16     FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRI-
 
    17     BUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 
    18     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
 
    19     PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 
    20     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 
 
    21     THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
    30 /** Standard Z positions */
 
    40 /** A moveable item in a card/board game.
 
    41     Abstract superclass of Card and Piece. */
 
    42 @interface Bit : GGBLayer
 
    45     int _restingZ;      // Original z position, saved while pickedUp
 
    47     float _restingShadowOpacity, _restingShadowRadius;
 
    48     CGSize _restingShadowOffset;
 
    51     Player *_owner;     // Player that owns this Bit
 
    55 /** Conveniences for getting/setting the layer's scale and rotation */
 
    56 @property CGFloat scale;
 
    57 @property int rotation;         // in degrees! Positive = clockwise
 
    59 /** "Picking up" a Bit makes it larger, translucent, and in front of everything else */
 
    60 @property BOOL pickedUp;
 
    62 /** Current holder (or nil) */
 
    63 @property (readonly) id<BitHolder> holder;
 
    65 /** Ownership of this Bit */
 
    66 @property (assign) Player *owner;
 
    68 /** Conveniences for owner.friendly, owner.unfriendly */
 
    69 @property (readonly, getter=isFriendly)   BOOL friendly;
 
    70 @property (readonly, getter=isUnfriendly) BOOL unfriendly;
 
    72 /** An uninterpreted integer that the Game can use for its own purposes. */
 
    73 @property NSInteger tag;
 
    75 /** Removes this Bit while running a explosion/fade-out animation */