#include <stdio.h>
#include <sys/types.h>
#include <sys/time.h>
#include <ncurses.h>
#include <setjmp.h>
#include <pwd.h>
#include <sys/utsname.h>

#define VUNIT		1		/* ver unit */
#define HUNIT		2		/* hor unit */

#define NORM_OFFSET	13		/* x offset for blocks */
#define NEXT_HEIGHT	(VUNIT*5)	/* height for next block */

jmp_buf rest;				/* to restart the game */

#define BLUE		1
#define GREEN		2
#define CYAN		3
#define RED		4
#define PURPLE		5
#define YELLOW		6
#define WHITE		7
#define BLACK		8

int	score_position;		/* position of this game in the hiscore tab */
int 	shape_no;		/* the dripping shape */
int	xpos, ypos, rot;	/* x, y, rotation of shape_no */
int	score;			/* score */
int	lines;			/* number of lines collapsed */
int	level;			/* current level */
int	next;			/* "show next" switch */
int	next_no;		/* next shape */
int	next_rot;		/* rotation of next shape */
char	*name;			/* username */

#define UWIDTH	12
#define UHEIGHT 22

unsigned char grid[UWIDTH][UHEIGHT];

struct shape_table {
	int	table[5][4];
	int	pointv[4];
	char	color;
} shape[27];

#define HIGH_SCORES_TABLE	"/usr/local/share/games/pentix/pentix.res"
#define QUOTATIONS_TABLE	"/usr/local/share/games/pentix/pentix.qtn"

#define HIGH_SCORES_TABLE_SIZE	16

#define MAXNAMELEN		8
#define MAXHOSTLEN		256
#define MAXDATELEN		14

struct score_table {
	char	name[MAXNAMELEN+1];
	int	score;
	int	lines;
	int	level;
	char	hostname[MAXHOSTLEN+1];
	char	date[MAXDATELEN+1];
} high_scores[HIGH_SCORES_TABLE_SIZE];

char	quotations[50][BUFSIZ];		/* quotation pool  */
int	qcount;				/* quotation count */

#define LEAP_LEVEL_DELAY	240	/* leap level delay in seconds */

/* main */
void initialise(void);
void init_all(void);
void init_curses(void);
void exit_curses(void);
void main_loop(void);
void drop_block(void);
int waituser(void);
void end_game(void);
void end_proc(void);
void left_proc(void);
void right_proc(void);
void rot_proc(void);
void fast_proc(void);
void show_next(int on);
void print_shape(int, int, int, int, int);
void addbl(int, int, int);
void scinsert(int);
void scdelete(int);
void scmove(int, int);

/* shapes */
void define_shapes(void);
void store_shape(int, int, int, int);
void create_shape(void);

/* misc */
int block_can_drop(int, int, int, int);
int block_can_left(int, int, int, int);
int block_can_right(int, int, int, int);
int check_rot(int, int, int, int);
void remove_full_lines(int);
void update_highscore_table(void);
void read_high_scores(void);
void write_high_scores(void);
void print_high_scores(void);
void read_quotations(void);
void print_quotation(void);
void print_authors(void);
void print_help(void);
void setup_level(void);
void show_score(int);
int factorial(int);
int usec_delta(int, int);

extern char *ctime();
extern char *strncpy(char[], const char[], size_t);
extern void bzero(void* , size_t);
extern void srandom(unsigned long);
extern long random(void);
extern uid_t getuid(void);
extern int atoi(const char[]);
extern int isdigit(int);