X-Git-Url: https://plomlompom.com/repos/?a=blobdiff_plain;f=src%2Fserver%2Ffield_of_view.c;h=e279babae9d1dce791d107054cd8792717b7dec2;hb=cf0d81ea863df7adb1bdd862708571b0e40a73cb;hp=ae8aa9cbaa0887dbde1478f07ac808f6bc525a1f;hpb=3cb6ed6453b22eba62f7c9186790813b0abebeb9;p=plomrogue diff --git a/src/server/field_of_view.c b/src/server/field_of_view.c index ae8aa9c..e279bab 100644 --- a/src/server/field_of_view.c +++ b/src/server/field_of_view.c @@ -6,8 +6,9 @@ #include /* memset() */ #include "../common/rexit.h" /* exit_trouble() */ #include "../common/try_malloc.h" /* try_malloc() */ -#include "things.h" /* Thing */ -#include "yx_uint8.h" /* yx_uint8 */ +#include "../common/yx_uint8.h" /* yx_uint8 */ +#include "map.h" /* mv_yx_in_dir_legal() */ +#include "things.h" /* Thing, ThingInMemory, add_thing_to_memory_map() */ #include "world.h" /* world */ @@ -30,22 +31,6 @@ struct shadow_angle -/* Move "yx" into hex direction "d". */ -static void mv_yx_in_hex_dir(char d, struct yx_uint8 * yx); - -/* Move "yx" into hex direction "d". If this moves "yx" beyond the minimal (0) - * or maximal (UINT8_MAX) column or row, it wraps to the opposite side. Such - * wrapping is returned as a wraps enum value and stored, so that further calls - * to move "yx" back into the opposite direction may unwrap it again. Pass an - * "unwrap" of !0 to re-set the internal wrap memory to 0. - */ -static uint8_t mv_yx_in_dir_wrap(char d, struct yx_uint8 * yx, uint8_t unwrap); - -/* Wrapper to mv_yx_in_dir_wrap(), returns 1 if the wrapped function moved "yx" - * within the wrap borders and the map size, else 0. - */ -static uint8_t mv_yx_in_dir_legal(char dir, struct yx_uint8 * yx); - /* Recalculate angle < 0 or > CIRCLE to a value between these two limits. */ static uint32_t correct_angle(int32_t angle); @@ -84,91 +69,13 @@ static void eval_position(uint16_t dist, uint16_t hex_i, char * fov_map, struct yx_uint8 * test_pos, struct shadow_angle ** shadows); -/* Update "t"'s .mem_map memory with what's in its current field of view. */ +/* Update "t"'s .mem_map memory with what's in its current FOV, remove from its + * .t_mem all memorized things in FOV and add inanimiate things in FOV to it. + */ static void update_map_memory(struct Thing * t, uint32_t map_size); -static void mv_yx_in_hex_dir(char d, struct yx_uint8 * yx) -{ - if (d == 'e') - { - yx->x = yx->x + (yx->y % 2); - yx->y--; - } - else if (d == 'd') - { - yx->x++; - } - else if (d == 'c') - { - yx->x = yx->x + (yx->y % 2); - yx->y++; - } - else if (d == 'x') - { - yx->x = yx->x - !(yx->y % 2); - yx->y++; - } - else if (d == 's') - { - yx->x--; - } - else if (d == 'w') - { - yx->x = yx->x - !(yx->y % 2); - yx->y--; - } -} - - - -static uint8_t mv_yx_in_dir_wrap(char d, struct yx_uint8 * yx, uint8_t unwrap) -{ - static int8_t wrap_west_east = 0; - static int8_t wrap_north_south = 0; - if (unwrap) - { - wrap_west_east = wrap_north_south = 0; - return 0; - } - struct yx_uint8 original; - original.y = yx->y; - original.x = yx->x; - mv_yx_in_hex_dir(d, yx); - if (strchr("edc", d) && yx->x < original.x) - { - wrap_west_east++; - } - else if (strchr("xsw", d) && yx->x > original.x) - { - wrap_west_east--; - } - if (strchr("we", d) && yx->y > original.y) - { - wrap_north_south--; - } - else if (strchr("xc", d) && yx->y < original.y) - { - wrap_north_south++; - } - return (wrap_west_east != 0) + (wrap_north_south != 0); -} - - - -static uint8_t mv_yx_in_dir_legal(char dir, struct yx_uint8 * yx) -{ - uint8_t wraptest = mv_yx_in_dir_wrap(dir, yx, 0); - if (!wraptest && yx->x < world.map.length && yx->y < world.map.length) - { - return 1; - } - return 0; -} - - - static uint32_t correct_angle(int32_t angle) { while (angle < 0) @@ -354,19 +261,49 @@ static void eval_position(uint16_t dist, uint16_t hex_i, char * fov_map, -static void update_map_memory(struct Thing * t, uint32_t map_size) +static void update_map_memory(struct Thing * t_eye, uint32_t map_size) { - if (!t->mem_map) + if (!t_eye->mem_map) { - t->mem_map = try_malloc(map_size, __func__); - memset(t->mem_map, ' ', map_size); + t_eye->mem_map = try_malloc(map_size, __func__); + memset(t_eye->mem_map, ' ', map_size); } uint32_t i; for (i = 0; i < map_size; i++) { - if (' ' == t->mem_map[i] && t->fov_map[i] == 'v') + if (' ' == t_eye->mem_map[i] && t_eye->fov_map[i] == 'v') { - t->mem_map[i] = world.map.cells[i]; + t_eye->mem_map[i] = world.map.cells[i]; + } + } + struct ThingInMemory * tm = t_eye->t_mem; + struct ThingInMemory * tm_prev = NULL; + struct ThingInMemory * tm_next = NULL; + for (; tm; tm = tm_next) + { + tm_next = tm->next; + if ('v' == t_eye->fov_map[tm->pos.y * world.map.length + tm->pos.x]) + { + if (tm_prev) + { + tm_prev->next = tm->next; + } + else + { + t_eye->t_mem = tm->next; + } + free(tm); + continue; + } + tm_prev = tm; + } + struct Thing * t = world.things; + for (; t; t = t->next) + { + if ( !t->lifepoints + && 'v' == t_eye->fov_map[t->pos.y * world.map.length + t->pos.x]) + { + add_thing_to_memory_map(t_eye, t->type, t->pos.y, t->pos.x); } } } @@ -378,19 +315,19 @@ extern void build_fov_map(struct Thing * t) uint32_t map_size = world.map.length * world.map.length; t->fov_map = t->fov_map ? t->fov_map : try_malloc(map_size, __func__); memset(t->fov_map, 'v', map_size); - struct yx_uint8 test_pos = t->pos; struct shadow_angle * shadows = NULL; + struct yx_uint8 test_pos = t->pos; char * circle_dirs = "xswedc"; uint16_t dist; - uint8_t first_round, circle_on_map; - for (first_round = 1, dist = 1, circle_on_map = 1; circle_on_map; dist++) + uint8_t circle_on_map; + for (dist = 1, circle_on_map = 1; circle_on_map; dist++) { - if (!first_round) + if (1 != dist) { mv_yx_in_dir_legal('c', &test_pos); } char dir = 'd'; - uint8_t i_dir = first_round = circle_on_map = 0; + 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++) { @@ -407,7 +344,7 @@ extern void build_fov_map(struct Thing * t) } } } - mv_yx_in_dir_wrap(0, NULL, 1); + mv_yx_in_dir_legal(0, NULL); free_angles(shadows); update_map_memory(t, map_size); }