memset(t->fov_map, 'v', map_size);
struct shadow_angle * shadows = NULL;
struct yx_uint8 test_pos = t->pos;
- char * circle_dirs = "xswedc";
- uint16_t dist;
- uint8_t circle_on_map;
- for (dist = 1, circle_on_map = 1; circle_on_map; dist++)
+ char * circledirs_string = "xswedc";
+ uint16_t circle_i;
+ uint8_t circle_is_on_map;
+ for (circle_i = 1, circle_is_on_map = 1; circle_is_on_map; circle_i++)
{
- if (1 != dist)
+ circle_is_on_map = 0;
+ if (1 < circle_i) /* All circles but the 1st are */
+ { /* moved into starting from a */
+ mv_yx_in_dir_legal('c', &test_pos);/* previous circle's last hex, */
+ } /* i.e. from the upper left. */
+ uint8_t dir_char_pos_in_circledirs_string = 0;
+ char dir_char = 'd'; /* Circle's 1st hex is entered by rightward move.*/
+ uint16_t dist_i, hex_i;
+ for (hex_i = 0, dist_i = 1; hex_i < 6 * circle_i; dist_i++, hex_i++)
{
- mv_yx_in_dir_legal('c', &test_pos);
- }
- char dir = 'd';
- uint8_t i_dir = circle_on_map = 0;
- uint16_t i_dist, hex_i;
- for (hex_i = 0, i_dist = 1; hex_i < 6 * dist; i_dist++, hex_i++)
- {
- if (mv_yx_in_dir_legal(dir, &test_pos))
- {
- eval_position(dist, hex_i, t->fov_map, &test_pos, &shadows);
- circle_on_map = 1;
- }
- dir = circle_dirs[i_dir];
- if (dist == i_dist)
+ if (mv_yx_in_dir_legal(dir_char, &test_pos))
{
- i_dist = 0;
- i_dir++;
+ eval_position(circle_i, hex_i, t->fov_map, &test_pos, &shadows);
+ circle_is_on_map = 1;
}
+ dir_char = circledirs_string[dir_char_pos_in_circledirs_string];
+ if (circle_i == dist_i) /* Number of steps into */
+ { /* one direction before */
+ dist_i = 0; /* direction change is */
+ dir_char_pos_in_circledirs_string++;/* equal to distance to */
+ } /* center / circle number.*/
}
}
mv_yx_in_dir_legal(0, NULL);