/**
* @brief Create surface fragments for light-emitting surfaces so that light sources
* may be computed along them.
*/
void BuildPatches(void) {
int32_t i, j, k;
winding_t *w;
vec3_t origin;
for (i = 0; i < bsp_file.num_models; i++) {
const bsp_model_t *mod = &bsp_file.models[i];
const entity_t *ent = EntityForModel(i);
// bmodels with origin brushes need to be offset into their
// in-use position
VectorForKey(ent, "origin", origin);
for (j = 0; j < mod->num_faces; j++) {
const int32_t facenum = mod->first_face + j;
bsp_face_t *f = &bsp_file.faces[facenum];
VectorCopy(origin, face_offset[facenum]);
if (!HasLight(f)) { // no light
continue;
}
w = WindingForFace(f);
for (k = 0; k < w->num_points; k++) {
VectorAdd(w->points[k], origin, w->points[k]);
}
BuildPatch(facenum, w);
}
}
}
/*
* @brief
*/
static _Bool ParseMapEntity(void) {
entity_t *mapent;
epair_t *e;
side_t *s;
int32_t i, j;
vec_t newdist;
map_brush_t *b;
if (!GetToken(true))
return false;
if (g_strcmp0(token, "{"))
Com_Error(ERR_FATAL, "\"{\" not found\n");
if (num_entities == MAX_BSP_ENTITIES)
Com_Error(ERR_FATAL, "MAX_BSP_ENTITIES\n");
mapent = &entities[num_entities];
num_entities++;
memset(mapent, 0, sizeof(*mapent));
mapent->first_brush = num_map_brushes;
mapent->num_brushes = 0;
do {
if (!GetToken(true))
Com_Error(ERR_FATAL, "EOF without closing brace\n");
if (!g_strcmp0(token, "}"))
break;
if (!g_strcmp0(token, "{"))
ParseBrush(mapent);
else {
e = ParseEpair();
e->next = mapent->epairs;
mapent->epairs = e;
}
} while (true);
VectorForKey(mapent, "origin", mapent->origin);
// if there was an origin brush, offset all of the planes and texinfo
if (mapent->origin[0] || mapent->origin[1] || mapent->origin[2]) {
for (i = 0; i < mapent->num_brushes; i++) {
b = &map_brushes[mapent->first_brush + i];
for (j = 0; j < b->num_sides; j++) {
s = &b->original_sides[j];
newdist = map_planes[s->plane_num].dist
- DotProduct(map_planes[s->plane_num].normal, mapent->origin);
s->plane_num = FindPlane(map_planes[s->plane_num].normal, newdist);
s->texinfo = TexinfoForBrushTexture(&map_planes[s->plane_num],
&map_brush_textures[s - map_brush_sides], mapent->origin);
}
MakeBrushWindings(b);
}
}
// group entities are just for editor convenience
// toss all brushes into the world entity
if (!g_strcmp0("func_group", ValueForKey(mapent, "classname"))) {
MoveBrushesToWorld(mapent);
mapent->num_brushes = 0;
return true;
}
// areaportal entities move their brushes, but don't eliminate the entity
if (!g_strcmp0("func_areaportal", ValueForKey(mapent, "classname"))) {
char str[128];
if (mapent->num_brushes != 1)
Com_Error(
ERR_FATAL,
"ParseMapEntity: %i func_areaportal can only be a single brush\n",
num_entities - 1);
b = &map_brushes[num_map_brushes - 1];
b->contents = CONTENTS_AREA_PORTAL;
c_area_portals++;
mapent->area_portal_num = c_area_portals;
// set the portal number as "style"
sprintf(str, "%i", c_area_portals);
SetKeyValue(mapent, "areaportal", str);
MoveBrushesToWorld(mapent);
return true;
}
return true;
}
