/*
* Copyright (C) 2003, David Redick
* Released under the GNU General Public License (v2)
*/

#include <stdio.h>
#include <stdlib.h>

#include "map.h"


char default_filename[10] = "lwmap.bmp";


/* [2] for w == 0, h == 1 */
int map_size[MAX_MAP_SIZE][2] =
{
     { 128, 95 },     /* 0 */
     { 160, 120 },    /* 1 */
     { 256, 190 },    /* 2 */
     { 320, 240 },    /* 3 */
     { 512, 380 },    /* 4 */
     { 640, 480 }     /* 5 */
};


/* [2] for r == 0, c == 1 */
/* the maps just look better if the ratio is the same */
int map_grid_size[MAX_MAP_GRID_SIZE][2] =
{
     /* this is random. keep at top */
     { 0, 0 },     /* 0 */

     { 2, 3 },     /* 1 */
     { 4, 6 },     /* 2 */
     { 6, 9 },     /* 3 */
     { 8, 12 },    /* 4 */
     { 10, 15 },   /* 5 */
     { 12, 18 },   /* 6 */
     { 14, 21 },   /* 7 */
     { 16, 24 },   /* 8 */
     { 18, 26 }    /* 9 */
};


map_t map;

/*****************************************************************************/

void clear_map()
{
     clear_to_color(map.map, 255);
     /* draw outline */
     rect(map.map, 0, 0, map.width-1, map.height-1, 0);
}

/*****************************************************************************/

void clear_invert_map()
{
     clear_to_color(map.map, 0);
}

/*****************************************************************************/
/* print map info to stdout */
/* really for debugging */

void print_map()
{
     printf("Name:     %s\n",      map.filename);
     printf("Size:     %dx%d\n",   map.width, map.height);
     printf("Row/Col:  %d/%d\n",   map.num_row, map.num_col);
     printf("Section:  %fx%f\n",   map.sec_width, map.sec_height);
     printf("Function: (%d) %s\t%s\n", map.func_id,
          func[map.func_id].name, func[map.func_id].desc);
}

/*****************************************************************************/
/* get r, c from i */
void section_rc( int *r, int *c, int i )
{
     *r = i / map.num_col;
     *c = i % map.num_col;

return;
}

/*****************************************************************************/

void offset( int *xoffset, int *yoffset, int r, int c)
{
     *xoffset = c * map.sec_width;
     *yoffset = r * map.sec_height;

return;
}

/*****************************************************************************/
/* TODO: does this cause rounding errors? */

void rand_point_section( int *x, int *y, int pad )
{
     *x = rand_num(pad, map.sec_width-pad);
     *y = rand_num(pad, map.sec_height-pad);

return;
}

/*****************************************************************************/
/* TODO: does this cause rounding errors? */

void rand_point_section_offset( int *x, int *y, int r, int c, int pad )
{
     int xoffset, yoffset;

     offset(&xoffset, &yoffset, r, c);

     *x = rand_num(pad, map.sec_width-pad) + xoffset;
     *y = rand_num(pad, map.sec_height-pad) + yoffset;

return;
}

/*****************************************************************************/

void section_center( int *x, int *y, int r, int c )
{
     int xoffset, yoffset;

     offset(&xoffset, &yoffset, r, c);

     *x = (map.sec_width/2.0)+xoffset;
     *y = (map.sec_height/2.0)+yoffset;

return;
}

/*****************************************************************************/