X-Git-Url: https://plomlompom.com/repos/foo.html?a=blobdiff_plain;f=src%2Fserver%2Ffield_of_view.c;h=f14fffd1c11b090057dd707d94f93ec6383d2508;hb=edebb2bf9aa780ee2f7006c1d2be9168564d34df;hp=f34885de66d073a771f848c200032d820d8182bc;hpb=fa0c416ccad4c4278813909ca1b799cd0600840c;p=plomrogue
diff --git a/src/server/field_of_view.c b/src/server/field_of_view.c
index f34885d..f14fffd 100644
--- a/src/server/field_of_view.c
+++ b/src/server/field_of_view.c
@@ -84,6 +84,9 @@ static void eval_position(uint16_t dist, uint16_t hex_i, uint8_t * 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. */
+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)
@@ -327,12 +330,31 @@ static void eval_position(uint16_t dist, uint16_t hex_i, uint8_t * fov_map,
-extern void build_fov_map(struct Thing * eye)
+static void update_map_memory(struct Thing * t, uint32_t map_size)
+{
+ if (!t->mem_map)
+ {
+ t->mem_map = try_malloc(map_size, __func__);
+ memset(t->mem_map, ' ', map_size);
+ }
+ uint32_t i;
+ for (i = 0; i < map_size; i++)
+ {
+ if (' ' == t->mem_map[i] && t->fov_map[i] & VISIBLE)
+ {
+ t->mem_map[i] = world.map.cells[i];
+ }
+ }
+}
+
+
+
+extern void build_fov_map(struct Thing * t)
{
uint32_t map_size = world.map.length * world.map.length;
- uint8_t * fov_map = try_malloc(map_size, __func__);
- memset(fov_map, VISIBLE, map_size);
- struct yx_uint8 test_pos = eye->pos;
+ t->fov_map = t->fov_map ? t->fov_map : try_malloc(map_size, __func__);
+ memset(t->fov_map, VISIBLE, map_size);
+ struct yx_uint8 test_pos = t->pos;
struct shadow_angle * shadows = NULL;
char * circle_dirs = "xswedc";
uint16_t dist;
@@ -350,7 +372,7 @@ extern void build_fov_map(struct Thing * eye)
{
if (mv_yx_in_dir_legal(dir, &test_pos))
{
- eval_position(dist, hex_i, fov_map, &test_pos, &shadows);
+ eval_position(dist, hex_i, t->fov_map, &test_pos, &shadows);
circle_on_map = 1;
}
dir = circle_dirs[i_dir];
@@ -363,6 +385,5 @@ extern void build_fov_map(struct Thing * eye)
}
mv_yx_in_dir_wrap(0, NULL, 1);
free_angles(shadows);
- free(eye->fov_map);
- eye->fov_map = fov_map;
+ update_map_memory(t, map_size);
}