/*

     File: Background.h

 Abstract: Background. The background image for the game. Reads and maintains landscape info; computes collisions with the background.

  Version: 1.0

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 */

#import "GamePiece.h"

@class Mine;

@class HorizMine;

#define MAXLEVELS 30    /* Changing this will make highscores incompatible! */

@interface Background:GamePiece {   

    NSInteger maxLevelSpecs;                  /* Maximum number of code points in any level */

    NSInteger numLandscapeSpecs;        /* Number of code points specified in cur level (actually one less) */

    NSInteger landscapeWidthInPixels;         /* Total width of landscape, and hence the background image; numLandscapeSpecs * LANDSCAPEWIDTHPERSPEC */

    NSRect gameRect;            /* Rect describing the current level game area */

    short *bottom;                      /* Describes the ceiling in the current level */

    short *top;                         /* Describes the ground in the current level */

    NSInteger bottomSpec;                     /* Location of current level bottom spec in levelData */

    NSInteger topSpec;                        /* Location of current level top spec in levelData */

    NSInteger gamePieces;                     /* Location of current level pieces spec in levelData */

    NSString *levelDescription;

    NSString *levelFileIdentifier;

    NSData *levelDataAsData;

    NSInteger currentLevel;

    NSInteger numLevels;

    NSColor *groundColor;

}

- (BOOL)initializeLevelData:(NSData *)data;

- (NSInteger)numLevels;

- (void)setLevel:(NSInteger)level;

- (NSString *)levelDescription;

- (NSString *)levelFileIdentifier;  // Non-nil only for custom level files

- (NSRect)clearRectFrom:(CGFloat)startLoc to:(CGFloat)endLoc;

- (NSRect)gameRect;

- (void)createLandscape;

- (void)drawLandscape;

- (void)washToBlack:(NSColor *)color size:(NSSize)size;

- (void)washToWhite:(NSColor *)color size:(NSSize)size;

- (void)putMine:(Mine *)mine :(NSInteger)loc :(CGFloat)yVel;

- (void)putMine:(Mine *)mine :(NSInteger)loc :(CGFloat)yVel :(CGFloat)locFromBottomPercentage;

- (void)putHorizMine:(HorizMine *)mine :(NSInteger)loc :(CGFloat)yVel :(CGFloat)locFromBottomPercentage;

@end