ref: b540a22eb0c287398e21358d6b66c8e544001f77
dir: /sys/src/games/sokoban/sokoban.h/
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);