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/*
 *      tetris.h
 *      Copyright © 2008 Martin Duquesnoy <xorg62@gmail.com>
 *      All rights reserved.
 *
 *      Redistribution and use in source and binary forms, with or without
 *      modification, are permitted provided that the following conditions are
 *      met:
 *
 *      * Redistributions of source code must retain the above copyright
 *        notice, this list of conditions and the following disclaimer.
 *      * Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following disclaimer
 *        in the documentation and/or other materials provided with the
 *        distribution.
 *      * Neither the name of the  nor the names of its
 *        contributors may be used to endorse or promote products derived from
 *        this software without specific prior written permission.
 *
 *      THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *      "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *      LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *      A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 *      OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *      SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 *      LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *      DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *      THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *      (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *      OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/* Libs */
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <signal.h>
#include <termios.h>
#include <sys/time.h>

/* Configuration of tty-tetris
 * Need to re-compile to set the change.
 */

/* Move the shape */
#define KEY_MOVE_LEFT  'h'
#define KEY_MOVE_RIGHT 'l'

/* Change the shape position */
#define KEY_CHANGE_POSITION_NEXT 'k'    /* also 'd' */
#define KEY_CHANGE_POSITION_PREV 'j'    /* also 's' */

/* ' ' for space key */
#define KEY_DROP_SHAPE ' '

/* Other key */
#define KEY_PAUSE 'p'
#define KEY_QUIT  'q'
#define KEY_SPEED '-'

/* Timing in milisecond */
#define TIMING 300000

/* Expension factor of shapes */
#define EXP_FACT 2

/* Frame dimension */
#ifdef _M_I86
#define FRAMEW 23
#define FRAMEH 20
#else
#define FRAMEW (int)(10*2.3)
#define FRAMEH (int)(9*2.3)
#endif
#define FRAMEW_NB 15
#define FRAMEH_NB 5

/* Shapes position */
#define N_POS ((current.pos < 3) ? current.pos + 1 : 0)
#define P_POS ((current.pos > 0) ? current.pos - 1 : 3)

/* Draw the score.. */
#define DRAW_SCORE() set_color(Score);                 \
     printf("\033[%d;%dH %d", FRAMEH + 3, 9, score);   \
     printf("\033[%d;%dH %d", FRAMEH + 4, 9, lines);   \
     set_color(0);

/* Bool type */
typedef enum { False, True } Bool;

/* Shape structure */
typedef struct
{
     int num;
     int next;
     int pos;
     int x, y;
     Bool last_move;
} shape_t;

/* Color enum */
enum { Black, Blue, Red, Magenta, White, Green, Cyan, Yellow, Border, Score, ColLast };

/* Prototypes */

/* util.c */
void clear_term(void);
void set_cursor(Bool);
void printxy(int, int, int, char*);
void set_color(int);
int nrand(int, int);
void sig_handler(int);

/* frame.c */
void frame_init(void);
void frame_refresh(void);

/* shapes.c */
void shape_set(void);
void shape_unset(void);
void shape_new(void);
void shape_go_down(void);
void shape_set_position(int);
void shape_move(int);
void shape_drop(void);

/* tetris.c */
void arrange_score(int l);
void check_plain_line(void);
int check_possible_pos(int, int);
void get_key_event(void);
/* Variables */

const int shapes[7][4][4][2];
struct itimerval tv;
struct termios back_attr;
shape_t current;
int frame[FRAMEH + 1][FRAMEW + 1];
int frame_prev[FRAMEH + 1][FRAMEW + 1];
int score;
int lines;
Bool running;
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