Subversion Repositories planix.SVN

enum {
        /* levels */
        Empty           = 0,
        Background,
        Wall, 
        Cargo,
        Goal,
        GoalCargo,
        Glenda,

        /* movements */
        Up,
        Down,
        Left,
        Right,
};

enum {
        /* glenda faces the horizontal direction she's moving in */
        GLeft   = 0,
        GRight  = 1,
};

enum {
        MazeX = 20,
        MazeY = 18,
        BoardX = 49,
        BoardY = 49,
        SizeX = MazeX*BoardX+10,        
        SizeY = MazeY*BoardY+10,

        Maxlevels = 200,
};

typedef struct Step {
        uint dir;               /* direction */
        uint count;     /* number of single-step moves */
} Step;

typedef struct Route {
        uint nstep;     /* number of valid Step */
        Step *step;
        Point dest;     /* result of step */
} Route;

typedef struct Walk {
        uint nroute;    /* number of valid Route* */
        Route **route;
        uint beyond;    /* number of allocated Route* */
} Walk;

typedef struct Visited {
        uint    board[MazeX][MazeY];
} Visited;

typedef struct Animation {
        Route* route;
        Step *step;
        int count;
} Animation;

typedef struct {
        Point   glenda;
        Point   max;            /* that's how much the board spans */
        uint    index;
        uint    done;
        uint    board[MazeX][MazeY];
} Level;

Level level;            /* the current level */
Level levels[Maxlevels];        /* all levels from this file */
int numlevels;          /* how many levels do we have */

Image *img;             /* buffer */
Image *text;            /* for text messages */
Image *win;

Image *goal;
Image *cargo;
Image *goalcargo;
Image *wall;
Image *empty;
Image *gleft;
Image *gright;
Image *glenda;
Image *bg;

/* graphics.c */
void drawscreen(void);
void drawlevel(void);
void drawwin(void);
void drawglenda(void);
void drawboard(Point);
void resize(Point);
Point boardsize(Point);

/* level.c */
int loadlevels(char *);

/* move.c */
void move(int);

/* route.c */
int validpush(Point, Step*, Point*);
int isvalid(Point, Route*, int (*)(Point, Step*, Point*));
void freeroute(Route*);
Route* extend(Route*, int, int, Point);
Route* findroute(Point, Point);

/* animation.c */
void initanimation(Animation*);
void setupanimation(Animation*, Route*);
int onestep(Animation*);
void stopanimation(Animation*);


/* sokoban.c */
char *genlevels(int);
Image *eallocimage(Rectangle, int, uint);