MAZE.H

#ifndef __MAZE_H__ 
#define __MAZE_H__ 
 
#include "maze_std.h" 
 
#define MAZE_GRID 12 
#define MAZE_CELLS (MAZE_GRID*MAZE_GRID) 
#define MAZE_ARRAY (MAZE_GRID+1) 
#define MAZE_ARRAY_CELLS (MAZE_ARRAY*MAZE_ARRAY) 
#define N_MAZE_PTS MAZE_ARRAY_CELLS 
#define N_MAZE_WALLS (2*MAZE_ARRAY_CELLS) 
 
#define MAZE_WALL_LEFT          0x0004 
#define MAZE_WALL_RIGHT         0x0008 
#define MAZE_WALL_UP            0x0010 
#define MAZE_WALL_DOWN          0x0020 
#define MAZE_CONTENTS           0x0040 
 
// Partial flags must be shifted versions of the standard flags 
#define MAZE_WALL_LEFT_PARTIAL  0x0080 
#define MAZE_WALL_RIGHT_PARTIAL 0x0100 
#define MAZE_WALL_UP_PARTIAL    0x0200 
#define MAZE_WALL_DOWN_PARTIAL  0x0400 
#define MAZE_PARTIAL_SHIFT      5 
 
#define WIDX_LEFT       0 
#define WIDX_RIGHT      1 
#define WIDX_UP         2 
#define WIDX_DOWN       3 
 
#define MAZE_CELL_SIZE 1 
#define MAZE_SIZE (MAZE_GRID*MAZE_CELL_SIZE) 
#define FMAZE_CELL_SIZE FxVal(MAZE_CELL_SIZE) 
#define FMAZE_SIZE FxVal(MAZE_SIZE) 
 
#define MfxToCell(mfx) FxInt(mfx) 
#define CellToMfx(cl) FxVal(cl) 
 
struct _Cell; 
 
#define DRAW_POLYGON    0 
#define DRAW_SPECIAL    1 
 
#define SPECIAL_ARG_ICOSAHEDRON         0 
#define SPECIAL_ARG_OCTAHEDRON          1 
#define SPECIAL_ARG_DODECAHEDRON        2 
#define SPECIAL_ARG_TETRAHEDRON         3 
#define SPECIAL_ARG_COUNT               4 
 
typedef struct _Object 
{ 
    FxPt2 p; 
    FxValue z; 
    FaAngle ang; 
    FxValue w, h; 
    int col; 
    int draw_style; 
    int draw_arg; 
    TEX_ENV *pTexEnv;  // ptr to texture environment 
    int user1, user2, user3; 
    struct _Object *next; 
    struct _Cell *cell; 
} Object; 
 
typedef unsigned short WallFlags; 
 
typedef struct _Cell 
{ 
    WallFlags can_see; 
    WallFlags unseen; 
    Object *contents; 
    struct _Wall *walls[4]; 
} Cell; 
 
extern Cell maze_cells[MAZE_GRID][MAZE_GRID]; 
 
extern float maze_height; 
extern double view_rot; 
extern int maze_walls_list; 
 
extern int gTexEnvMode; 
 
#define MAX_GOALS       10 
#define MAX_SPECIALS    (MAX_GOALS-1) 
 
#define GOAL_END        0 
#define GOAL_SPECIALS   1 
 
BOOL InitMaze(IntPt2 *start_cell, struct _MazeGoal *goals, int *ngoals); 
 
void PlaceObject(Object *obj, FxValue x, FxValue y); 
void RemoveObject(Object *obj); 
void MoveObject(Object *obj, FxValue x, FxValue y); 
 
void DrawMaze(MazeView *vw); 
void DrawMazeWalls(void); 
void DrawTopView(MazeView *vw); 
 
#endif