ti.h
#define _ln 24
#define _col 16
#define _px_per_block 8

#ifndef _null
#define _null (void *)0
#endif

extern int  get_matrix_block(char ln,char col);
extern void step();
extern void move_left();
extern void move_right();
extern void init();
extern void rotate();
extern void new_block();
extern void drop();


/*blocks

0  1  2  3  4  5     6   7   8    9 10

x  xx x   x x  xxxxx  xx xx   x   x xxx
x  xx xx xx xx       xx   xx xxx xx  x
x      x x  x                     x
x
x
*/

const char _block[11][5][5]={

    {
        {0,0,1,0,0},
        {0,0,1,0,0},
        {0,0,1,0,0},
        {0,0,1,0,0},
        {0,0,1,0,0}
    },

    {
        {0,0,0,0,0},
        {0,0,0,0,0},
        {0,0,0,0,0},
        {0,0,1,1,0},
        {0,0,1,1,0}

    },

    {
        {0,0,0,0,0},
        {0,0,0,0,0},
        {0,0,1,0,0},
        {0,0,1,1,0},
        {0,0,0,1,0}
    },

    {
        {0,0,0,0,0},
        {0,0,0,0,0},
        {0,0,0,1,0},
        {0,0,1,1,0},
        {0,0,1,0,0}
    },

    {
        {0,0,0,0,0},
        {0,0,0,0,0},
        {0,0,1,0,0},
        {0,0,1,1,0},
        {0,0,1,0,0}
    },

    {
        {0,0,0,0,0},
        {0,0,0,0,0},
        {1,1,1,1,1},
        {0,0,0,0,0},
        {0,0,0,0,0}
    },

    {
        {0,0,0,0,0},
        {0,0,0,0,0},
        {0,0,0,0,0},
        {0,0,1,1,0},
        {0,1,1,0,0}
    },

    {
        {0,0,0,0,0},
        {0,0,0,0,0},
        {0,0,0,0,0},
        {0,1,1,0,0},
        {0,0,1,1,0}
    },

    {
        {0,0,0,0,0},
        {0,0,0,0,0},
        {0,0,0,0,0},
        {0,0,1,0,0},
        {0,1,1,1,0}
    },

    {
        {0,0,0,0,0},
        {0,0,0,0,0},
        {0,0,1,0,0},
        {0,1,1,0,0},
        {0,0,1,0,0}
    },

    {
        {0,0,0,0,0},
        {0,0,0,0,0},
        {0,0,0,0,0},
        {0,1,1,1,0},
        {0,0,1,0,0}
    }
};