From 5c0311ff3095a5dd30fb15db54aa394498dd2bcf Mon Sep 17 00:00:00 2001 From: 0scar Date: Mon, 30 Oct 2023 23:11:54 +0100 Subject: The great formattening! --- src/fov.c | 175 ++++++++++++++++++++++++++++++-------------------------------- 1 file changed, 86 insertions(+), 89 deletions(-) (limited to 'src/fov.c') diff --git a/src/fov.c b/src/fov.c index cdc7dc8..3d5ae16 100644 --- a/src/fov.c +++ b/src/fov.c @@ -1,97 +1,94 @@ -#include -#include #include #include +#include +#include -void fov_shadowcast_rec(const void *map, const v2_i32 mapsize, - bool (*visblocking)(const void*), i32 *lightmap, - const i32 range, v2_i32 src, - const i32 row, - f32 start, const f32 end, - const i8 xx, const i8 xy, const i8 yx, const i8 yy) { - - if (start < end) return; - - const i32 range_2 = range * range; - f32 new_start = start; - - for (i32 i = row; i <= range; i++) { - i32 dx = (-1 * i) - 1; - i32 dy = -1 * i; - - bool blocked = false; - - while (dx <= 0) { - dx += 1; - - const i32 mapx = src.x + dx * xx + dy * xy; - const i32 mapy = src.y + dx * yx + dy * yy; - - const f32 slope_l = (((f32)dx) - 0.5f) / (((f32)dy) + 0.5f); - const f32 slope_r = (((f32)dx) + 0.5f) / (((f32)dy) - 0.5f); - - if (start < slope_r) continue; - if (end > slope_l) break; - - if (dx * dx + dy * dy < range_2) { - /* set as visible */ - if (mapx >= 0 && mapx < (long)mapsize.x - && mapy >= 0 && mapy < (long)mapsize.y) { - // TODO: Calculate proper dist from source - f32 x_2 = (src.x - mapx) * (src.x - mapx); - f32 y_2 = (src.y - mapy) * (src.y - mapy); - lightmap[mapy*mapsize.x + mapx] = MAX(lightmap[mapy*mapsize.x + mapx], range - sqrt((f32)(x_2 + y_2))); - } - } - - /* sizeof(i32) is the size of enums */ - /* -- unless the compiler doesn't follow standard behaviour */ - const bool is_blocked = visblocking( - (void*)((u64)map - + sizeof(i32) /* ~ enum size */ - * (mapsize.x * mapy + mapx) /* index */ - )); - - if (blocked) { - if (!is_blocked) { - new_start = slope_r; - } else { - blocked = false; - start = new_start; - } - } else if (!is_blocked && i < range) { - blocked = true; - fov_shadowcast_rec(map, mapsize, visblocking, lightmap, range, src, i+1, start, slope_l, xx, xy, yx, yy); - new_start = slope_r; - } - } - - if (blocked) break; - } +void fov_shadowcast_rec(const void* map, const v2_i32 mapsize, + bool (*visblocking)(const void*), i32* lightmap, + const i32 range, v2_i32 src, const i32 row, f32 start, + const f32 end, const i8 xx, const i8 xy, const i8 yx, + const i8 yy) { + + if (start < end) return; + + const i32 range_2 = range * range; + f32 new_start = start; + + for (i32 i = row; i <= range; i++) { + i32 dx = (-1 * i) - 1; + i32 dy = -1 * i; + + bool blocked = false; + + while (dx <= 0) { + dx += 1; + + const i32 mapx = src.x + dx * xx + dy * xy; + const i32 mapy = src.y + dx * yx + dy * yy; + + const f32 slope_l = (((f32)dx) - 0.5f) / (((f32)dy) + 0.5f); + const f32 slope_r = (((f32)dx) + 0.5f) / (((f32)dy) - 0.5f); + + if (start < slope_r) continue; + if (end > slope_l) break; + + if (dx * dx + dy * dy < range_2) { + /* set as visible */ + if (mapx >= 0 && mapx < (long)mapsize.x && mapy >= 0 && + mapy < (long)mapsize.y) { + // TODO: Calculate proper dist from source + f32 x_2 = (src.x - mapx) * (src.x - mapx); + f32 y_2 = (src.y - mapy) * (src.y - mapy); + lightmap[mapy * mapsize.x + mapx] = + MAX(lightmap[mapy * mapsize.x + mapx], + range - sqrt((f32)(x_2 + y_2))); + } + } + + /* sizeof(i32) is the size of enums */ + /* -- unless the compiler doesn't follow standard behaviour */ + const bool is_blocked = visblocking( + (void*)((u64)map + sizeof(i32) /* ~ enum size */ + * (mapsize.x * mapy + mapx) /* index */ + )); + + if (blocked) { + if (!is_blocked) { + new_start = slope_r; + } else { + blocked = false; + start = new_start; + } + } else if (!is_blocked && i < range) { + blocked = true; + fov_shadowcast_rec(map, mapsize, visblocking, lightmap, range, src, + i + 1, start, slope_l, xx, xy, yx, yy); + new_start = slope_r; + } + } + + if (blocked) break; + } } -/* http://www.roguebasin.com/index.php?title=FOV_using_recursive_shadowcasting */ -void fov_shadowcast(const void *map, const v2_i32 mapsize, - bool (*visblocking)(const void*), i32 *lightmap, +/* http://www.roguebasin.com/index.php?title=FOV_using_recursive_shadowcasting + */ +void fov_shadowcast(const void* map, const v2_i32 mapsize, + bool (*visblocking)(const void*), i32* lightmap, const i32 range, const v2_i32 src) { - const i8 m[4][8] = { - {1, 0, 0, -1, -1, 0, 0, 1}, - {0, 1, -1, 0, 0, -1, 1, 0}, - {0, 1, 1, 0, 0, -1, -1, 0}, - {1, 0, 0, 1, -1, 0, 0, -1}, - }; - - for (i32 oct = 0; oct < 8; oct++) { - fov_shadowcast_rec( - map, mapsize, visblocking, lightmap, range, src, - 1, 1.0, 0.0, - m[0][oct], - m[1][oct], - m[2][oct], - m[3][oct]); - } - - /* The center is the most lit square */ - lightmap[src.y * mapsize.x + src.x] = range; + const i8 m[4][8] = { + {1, 0, 0, -1, -1, 0, 0, 1}, + {0, 1, -1, 0, 0, -1, 1, 0}, + {0, 1, 1, 0, 0, -1, -1, 0}, + {1, 0, 0, 1, -1, 0, 0, -1}, + }; + + for (i32 oct = 0; oct < 8; oct++) { + fov_shadowcast_rec(map, mapsize, visblocking, lightmap, range, src, 1, 1.0, + 0.0, m[0][oct], m[1][oct], m[2][oct], m[3][oct]); + } + + /* The center is the most lit square */ + lightmap[src.y * mapsize.x + src.x] = range; } -- cgit v1.3