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ericw-tools/qbsp/map.cc

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/*
Copyright (C) 1996-1997 Id Software, Inc.
Copyright (C) 1997 Greg Lewis
Copyright (C) 1999-2005 Id Software, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
See file, 'COPYING', for details.
*/
#include <cassert>
#include <cctype>
#include <cstring>
#include <string>
#include <memory>
#include <list>
#include <utility>
#include <optional>
#include <fstream>
#include <fmt/ostream.h>
#include <qbsp/brush.hh>
#include <qbsp/map.hh>
#include <qbsp/qbsp.hh>
#include <common/parser.hh>
#include <common/fs.hh>
#include <common/imglib.hh>
#include <common/qvec.hh>
mapdata_t map;
std::shared_mutex map_planes_lock;
const std::optional<img::texture_meta> &mapdata_t::load_image_meta(const std::string_view &name)
{
static std::optional<img::texture_meta> nullmeta = std::nullopt;
auto it = meta_cache.find(name.data());
if (it != meta_cache.end()) {
return it->second;
}
// try a meta-only texture first; this is all we really need anyways
if (auto [texture_meta, _0, _1] = img::load_texture_meta(name, qbsp_options.target_game, qbsp_options);
texture_meta) {
// slight special case: if the meta has no width/height defined,
// pull it from the real texture.
if (!texture_meta->width || !texture_meta->height) {
auto [texture, _0, _1] = img::load_texture(name, true, qbsp_options.target_game, qbsp_options);
if (texture) {
texture_meta->width = texture->meta.width;
texture_meta->height = texture->meta.height;
}
}
if (!texture_meta->width || !texture_meta->height) {
logging::print("WARNING: texture {} has empty width/height \n", name);
}
return meta_cache.emplace(name, texture_meta).first->second;
}
// couldn't find a meta texture, so pull it from the pixel image
if (auto [texture, _0, _1] = img::load_texture(name, true, qbsp_options.target_game, qbsp_options); texture) {
return meta_cache.emplace(name, texture->meta).first->second;
}
logging::print("WARNING: Couldn't locate texture for {}\n", name);
meta_cache.emplace(name, std::nullopt);
return nullmeta;
}
static std::shared_ptr<fs::archive_like> LoadTexturePath(const fs::path &path)
{
if (qbsp_options.wadpaths.pathsValue().empty() || path.is_absolute()) {
return fs::addArchive(path, false);
}
for (auto &wadpath : qbsp_options.wadpaths.pathsValue()) {
return fs::addArchive(wadpath.path / path, wadpath.external);
}
return nullptr;
}
static void EnsureTexturesLoaded()
{
// Q2 doesn't need this
if (qbsp_options.target_game->id == GAME_QUAKE_II) {
return;
}
if (map.textures_loaded)
return;
map.textures_loaded = true;
const mapentity_t *entity = map.world_entity();
std::string wadstring = entity->epairs.get("_wad");
if (wadstring.empty()) {
wadstring = entity->epairs.get("wad");
}
bool loaded_any_archive = false;
if (wadstring.empty()) {
logging::print("WARNING: No wad or _wad key exists in the worldmodel\n");
} else {
imemstream stream(wadstring.data(), wadstring.size());
std::string wad;
while (std::getline(stream, wad, ';')) {
if (LoadTexturePath(wad)) {
loaded_any_archive = true;
}
}
}
if (!loaded_any_archive) {
if (!wadstring.empty()) {
logging::print("WARNING: No valid WAD filenames in worldmodel\n");
}
/* Try the default wad name */
fs::path defaultwad = qbsp_options.map_path;
defaultwad.replace_extension("wad");
if (fs::exists(defaultwad)) {
logging::print("INFO: Using default WAD: {}\n", defaultwad);
LoadTexturePath(defaultwad);
}
}
}
// Useful shortcuts
mapentity_t *mapdata_t::world_entity()
{
return &entities.at(0);
}
void mapdata_t::reset()
{
*this = mapdata_t{};
}
struct texdef_valve_t
{
qmat<vec_t, 2, 3> axis{};
qvec2d scale{};
qvec2d shift{};
};
struct texdef_quake_ed_t
{
vec_t rotate = 0;
qvec2d scale{};
qvec2d shift{};
};
struct texdef_quake_ed_noshift_t
{
vec_t rotate = 0;
qvec2d scale{};
};
struct texdef_etp_t
{
std::array<qvec3d, 3> planepoints{};
bool tx2 = false;
};
using texdef_brush_primitives_t = qmat<vec_t, 2, 3>;
static texdef_valve_t TexDef_BSPToValve(const texvecf &in_vecs);
static qvec2f projectToAxisPlane(const qvec3d &snapped_normal, const qvec3d &point);
static texdef_quake_ed_noshift_t Reverse_QuakeEd(qmat2x2f M, const qbsp_plane_t &plane, bool preserveX);
static void SetTexinfo_QuakeEd_New(
const qbsp_plane_t &plane, const qvec2d &shift, vec_t rotate, const qvec2d &scale, texvecf &out_vecs);
static void TestExpandBrushes(const mapentity_t *src);
static void AddAnimTex(const char *name)
{
int i, j, frame;
char framename[16], basechar = '0';
frame = name[1];
if (frame >= 'a' && frame <= 'j')
frame -= 'a' - 'A';
if (frame >= '0' && frame <= '9') {
frame -= '0';
basechar = '0';
} else if (frame >= 'A' && frame <= 'J') {
frame -= 'A';
basechar = 'A';
}
if (frame < 0 || frame > 9)
FError("Bad animating texture {}", name);
/*
* Always add the lower numbered animation frames first, otherwise
* many Quake engines will exit with an error loading the bsp.
*/
snprintf(framename, sizeof(framename), "%s", name);
for (i = 0; i < frame; i++) {
framename[1] = basechar + i;
for (j = 0; j < map.miptex.size(); j++) {
if (!Q_strcasecmp(framename, map.miptex.at(j).name.c_str()))
break;
}
if (j < map.miptex.size())
continue;
map.miptex.push_back({framename});
}
}
int FindMiptex(const char *name, std::optional<extended_texinfo_t> &extended_info, bool internal, bool recursive)
{
const char *pathsep;
int i;
// FIXME: figure out a way that we can move this to gamedef
if (qbsp_options.target_game->id != GAME_QUAKE_II) {
/* Ignore leading path in texture names (Q2 map compatibility) */
pathsep = strrchr(name, '/');
if (pathsep)
name = pathsep + 1;
if (!extended_info.has_value()) {
extended_info = extended_texinfo_t{};
}
for (i = 0; i < map.miptex.size(); i++) {
const maptexdata_t &tex = map.miptex.at(i);
if (!Q_strcasecmp(name, tex.name.c_str())) {
return i;
}
}
i = map.miptex.size();
map.miptex.push_back({name});
/* Handle animating textures carefully */
if (name[0] == '+') {
AddAnimTex(name);
}
} else {
// load .wal first
auto wal = map.load_image_meta(name);
if (wal && !internal && !extended_info.has_value()) {
extended_info = extended_texinfo_t{wal->contents, wal->flags, wal->value, wal->animation};
}
if (!extended_info.has_value()) {
extended_info = extended_texinfo_t{};
}
for (i = 0; i < map.miptex.size(); i++) {
const maptexdata_t &tex = map.miptex.at(i);
if (!Q_strcasecmp(name, tex.name.c_str()) && tex.flags.native == extended_info->flags.native &&
tex.value == extended_info->value && tex.animation == extended_info->animation) {
return i;
}
}
i = map.miptex.size();
map.miptex.push_back({name, extended_info->flags, extended_info->value, extended_info->animation});
/* Handle animating textures carefully */
if (!extended_info->animation.empty() && recursive) {
int last_i = i;
// recursively load animated textures until we loop back to us
while (true) {
// wal for next chain
wal = map.load_image_meta(wal->animation.c_str());
// texinfo base for animated wal
std::optional<extended_texinfo_t> animation_info = extended_info;
animation_info->animation = wal->animation;
// fetch animation chain
int next_i = FindMiptex(wal->name.data(), animation_info, internal, false);
map.miptex[last_i].animation_miptex = next_i;
last_i = next_i;
// looped back
if (wal->animation == name)
break;
}
// link back to the start
map.miptex[last_i].animation_miptex = i;
}
}
return i;
}
static bool IsSkipName(const char *name)
{
if (qbsp_options.noskip.value())
return false;
if (!Q_strcasecmp(name, "skip"))
return true;
if (!Q_strcasecmp(name, "*waterskip"))
return true;
if (!Q_strcasecmp(name, "*slimeskip"))
return true;
if (!Q_strcasecmp(name, "*lavaskip"))
return true;
if (!Q_strcasecmp(name, "bevel")) // zhlt compat
return true;
if (!Q_strcasecmp(name, "null")) // zhlt compat
return true;
return false;
}
static bool IsNoExpandName(const char *name)
{
if (!Q_strcasecmp(name, "bevel")) // zhlt compat
return true;
return false;
}
static bool IsSpecialName(const char *name)
{
if (name[0] == '*' && !qbsp_options.splitturb.value())
return true;
if (!Q_strncasecmp(name, "sky", 3) && !qbsp_options.splitsky.value())
return true;
return false;
}
static bool IsHintName(const char *name)
{
if (!Q_strcasecmp(name, "hint"))
return true;
if (!Q_strcasecmp(name, "hintskip"))
return true;
return false;
}
/*
===============
FindTexinfo
Returns a global texinfo number
===============
*/
int FindTexinfo(const maptexinfo_t &texinfo)
{
// NaN's will break mtexinfo_lookup, since they're being used as a std::map key and don't compare properly with <.
// They should have been stripped out already in ValidateTextureProjection.
for (int i = 0; i < 2; i++) {
for (int j = 0; j < 4; j++) {
Q_assert(!std::isnan(texinfo.vecs.at(i, j)));
}
}
// check for an exact match in the reverse lookup
const auto it = map.mtexinfo_lookup.find(texinfo);
if (it != map.mtexinfo_lookup.end()) {
return it->second;
}
/* Allocate a new texinfo at the end of the array */
const int num_texinfo = static_cast<int>(map.mtexinfos.size());
map.mtexinfos.emplace_back(texinfo);
map.mtexinfo_lookup[texinfo] = num_texinfo;
// catch broken < implementations in maptexinfo_t
assert(map.mtexinfo_lookup.find(texinfo) != map.mtexinfo_lookup.end());
// create a copy of the miptex for animation chains
if (map.miptex[texinfo.miptex].animation_miptex != -1) {
maptexinfo_t anim_next = texinfo;
anim_next.miptex = map.miptex[texinfo.miptex].animation_miptex;
map.mtexinfos[num_texinfo].next = FindTexinfo(anim_next);
}
return num_texinfo;
}
static surfflags_t SurfFlagsForEntity(const maptexinfo_t &texinfo, const mapentity_t &entity)
{
surfflags_t flags{};
const char *texname = map.miptex.at(texinfo.miptex).name.c_str();
const int shadow = entity.epairs.get_int("_shadow");
// These flags are pulled from surf flags in Q2.
// TODO: the Q1 version of this block can now be moved into texinfo
// loading by shoving them inside of texinfo.flags like
// Q2 does. Similarly, we can move the Q2 block out
// into a special function, like.. I dunno,
// game->surface_flags_from_name(surfflags_t &inout, const char *name)
// which we can just call instead of this block.
// the only annoyance is we can't access the various options (noskip,
// splitturb, etc) from there.
if (qbsp_options.target_game->id != GAME_QUAKE_II) {
if (IsSkipName(texname))
flags.is_skip = true;
if (IsHintName(texname))
flags.is_hint = true;
if (IsSpecialName(texname))
flags.native |= TEX_SPECIAL;
} else {
flags.native = texinfo.flags.native;
if ((flags.native & Q2_SURF_NODRAW) || IsSkipName(texname))
flags.is_skip = true;
if ((flags.native & Q2_SURF_HINT) || IsHintName(texname))
flags.is_hint = true;
}
if (IsNoExpandName(texname))
flags.no_expand = true;
if (entity.epairs.get_int("_dirt") == -1)
flags.no_dirt = true;
if (entity.epairs.get_int("_bounce") == -1)
flags.no_bounce = true;
if (entity.epairs.get_int("_minlight") == -1)
flags.no_minlight = true;
if (entity.epairs.get_int("_lightignore") == 1)
flags.light_ignore = true;
// "_minlight_exclude", "_minlight_exclude2", "_minlight_exclude3"...
for (int i = 0; i <= 9; i++) {
std::string key = "_minlight_exclude";
if (i > 0) {
key += std::to_string(i);
}
const std::string &excludeTex = entity.epairs.get(key.c_str());
if (!excludeTex.empty() && !Q_strcasecmp(texname, excludeTex)) {
flags.no_minlight = true;
}
}
if (shadow == -1)
flags.no_shadow = true;
if (!Q_strcasecmp("func_detail_illusionary", entity.epairs.get("classname"))) {
/* Mark these entities as TEX_NOSHADOW unless the mapper set "_shadow" "1" */
if (shadow != 1) {
flags.no_shadow = true;
}
}
// handle "_phong" and "_phong_angle" and "_phong_angle_concave"
vec_t phongangle = entity.epairs.get_float("_phong_angle");
const int phong = entity.epairs.get_int("_phong");
if (phong && (phongangle == 0.0)) {
phongangle = 89.0; // default _phong_angle
}
if (phongangle) {
flags.phong_angle = clamp(phongangle, 0.0, 360.0);
}
const vec_t phong_angle_concave = entity.epairs.get_float("_phong_angle_concave");
flags.phong_angle_concave = clamp(phong_angle_concave, 0.0, 360.0);
// handle "_minlight"
const vec_t minlight = entity.epairs.get_float("_minlight");
if (minlight > 0) {
// CHECK: allow > 510 now that we're float? or is it not worth it since it will
// be beyond max?
flags.minlight = clamp(minlight, 0.0, 510.0);
}
// handle "_mincolor"
{
qvec3d mincolor{};
entity.epairs.get_vector("_mincolor", mincolor);
if (qv::epsilonEmpty(mincolor, EQUAL_EPSILON)) {
entity.epairs.get_vector("_minlight_color", mincolor);
}
mincolor = qv::normalize_color_format(mincolor);
if (!qv::epsilonEmpty(mincolor, EQUAL_EPSILON)) {
for (int32_t i = 0; i < 3; i++) {
flags.minlight_color[i] = clamp(mincolor[i], 0.0, 255.0);
}
}
}
// handle "_light_alpha"
const vec_t lightalpha = entity.epairs.get_float("_light_alpha");
if (lightalpha != 0.0) {
flags.light_alpha = clamp(lightalpha, 0.0, 1.0);
}
return flags;
}
static void ParseEpair(parser_t &parser, mapentity_t *entity)
{
std::string key = parser.token;
// trim whitespace from start/end
while (std::isspace(key.front())) {
key.erase(key.begin());
}
while (std::isspace(key.back())) {
key.erase(key.end() - 1);
}
parser.parse_token(PARSE_SAMELINE);
entity->epairs.set(key, parser.token);
if (string_iequals(key, "origin")) {
entity->epairs.get_vector(key, entity->origin);
}
}
static void TextureAxisFromPlane(const qplane3d &plane, qvec3d &xv, qvec3d &yv, qvec3d &snapped_normal)
{
constexpr qvec3d baseaxis[18] = {
{0, 0, 1}, {1, 0, 0}, {0, -1, 0}, // floor
{0, 0, -1}, {1, 0, 0}, {0, -1, 0}, // ceiling
{1, 0, 0}, {0, 1, 0}, {0, 0, -1}, // west wall
{-1, 0, 0}, {0, 1, 0}, {0, 0, -1}, // east wall
{0, 1, 0}, {1, 0, 0}, {0, 0, -1}, // south wall
{0, -1, 0}, {1, 0, 0}, {0, 0, -1} // north wall
};
int bestaxis;
vec_t dot, best;
int i;
best = 0;
bestaxis = 0;
for (i = 0; i < 6; i++) {
dot = qv::dot(plane.normal, baseaxis[i * 3]);
if (dot > best || (dot == best && !qbsp_options.oldaxis.value())) {
best = dot;
bestaxis = i;
}
}
xv = baseaxis[bestaxis * 3 + 1];
yv = baseaxis[bestaxis * 3 + 2];
snapped_normal = baseaxis[bestaxis * 3];
}
static quark_tx_info_t ParseExtendedTX(parser_t &parser)
{
quark_tx_info_t result;
if (parser.parse_token(PARSE_COMMENT | PARSE_OPTIONAL)) {
if (!strncmp(parser.token.c_str(), "//TX", 4)) {
if (parser.token[4] == '1')
result.quark_tx1 = true;
else if (parser.token[4] == '2')
result.quark_tx2 = true;
}
} else {
// Parse extra Quake 2 surface info
if (parser.parse_token(PARSE_OPTIONAL)) {
result.info = extended_texinfo_t{{std::stoi(parser.token)}};
if (parser.parse_token(PARSE_OPTIONAL)) {
result.info->flags.native = std::stoi(parser.token);
}
if (parser.parse_token(PARSE_OPTIONAL)) {
result.info->value = std::stoi(parser.token);
}
}
}
return result;
}
static qmat4x4f texVecsTo4x4Matrix(const qplane3d &faceplane, const texvecf &in_vecs)
{
// [s]
// T * vec = [t]
// [distOffPlane]
// [?]
qmat4x4f T{
in_vecs.at(0, 0), in_vecs.at(1, 0), static_cast<float>(faceplane.normal[0]), 0, // col 0
in_vecs.at(0, 1), in_vecs.at(1, 1), static_cast<float>(faceplane.normal[1]), 0, // col 1
in_vecs.at(0, 2), in_vecs.at(1, 2), static_cast<float>(faceplane.normal[2]), 0, // col 2
in_vecs.at(0, 3), in_vecs.at(1, 3), static_cast<float>(-faceplane.dist), 1 // col 3
};
return T;
}
static qmat2x2f scale2x2(float xscale, float yscale)
{
qmat2x2f M{xscale, 0, // col 0
0, yscale}; // col1
return M;
}
static qmat2x2f rotation2x2_deg(float degrees)
{
float r = degrees * (Q_PI / 180.0);
float cosr = cos(r);
float sinr = sin(r);
// [ cosTh -sinTh ]
// [ sinTh cosTh ]
qmat2x2f M{cosr, sinr, // col 0
-sinr, cosr}; // col1
return M;
}
static float extractRotation(qmat2x2f m)
{
qvec2f point = m * qvec2f(1, 0); // choice of this matters if there's shearing
float rotation = atan2(point[1], point[0]) * 180.0 / Q_PI;
return rotation;
}
static qvec2f evalTexDefAtPoint(const texdef_quake_ed_t &texdef, const qbsp_plane_t &faceplane, const qvec3f &point)
{
texvecf temp;
SetTexinfo_QuakeEd_New(faceplane, texdef.shift, texdef.rotate, texdef.scale, temp);
const qmat4x4f worldToTexSpace_res = texVecsTo4x4Matrix(faceplane, temp);
const qvec2f uv = qvec2f(worldToTexSpace_res * qvec4f(point[0], point[1], point[2], 1.0f));
return uv;
}
static texdef_quake_ed_t addShift(const texdef_quake_ed_noshift_t &texdef, const qvec2f shift)
{
texdef_quake_ed_t res2;
res2.rotate = texdef.rotate;
res2.scale[0] = texdef.scale[0];
res2.scale[1] = texdef.scale[1];
res2.shift[0] = shift[0];
res2.shift[1] = shift[1];
return res2;
}
void checkEq(const qvec2f &a, const qvec2f &b, float epsilon)
{
for (int i = 0; i < 2; i++) {
if (fabs(a[i] - b[i]) > epsilon) {
printf("warning, checkEq failed\n");
}
}
}
qvec2f normalizeShift(const std::optional<img::texture_meta> &texture, const qvec2f &in)
{
if (!texture) {
return in; // can't do anything without knowing the texture size.
}
int fullWidthOffsets = static_cast<int>(in[0]) / texture->width;
int fullHeightOffsets = static_cast<int>(in[1]) / texture->height;
qvec2f result(in[0] - static_cast<float>(fullWidthOffsets * texture->width),
in[1] - static_cast<float>(fullHeightOffsets * texture->height));
return result;
}
/// `texture` is optional. If given, the "shift" values can be normalized
static texdef_quake_ed_t TexDef_BSPToQuakeEd(const qbsp_plane_t &faceplane,
const std::optional<img::texture_meta> &texture, const texvecf &in_vecs, const std::array<qvec3d, 3> &facepoints)
{
// First get the un-rotated, un-scaled unit texture vecs (based on the face plane).
qvec3d snapped_normal;
qvec3d unrotated_vecs[2];
TextureAxisFromPlane(faceplane, unrotated_vecs[0], unrotated_vecs[1], snapped_normal);
const qmat4x4f worldToTexSpace = texVecsTo4x4Matrix(faceplane, in_vecs);
// Grab the UVs of the 3 reference points
qvec2f facepoints_uvs[3];
for (int i = 0; i < 3; i++) {
facepoints_uvs[i] = qvec2f(worldToTexSpace * qvec4f(facepoints[i][0], facepoints[i][1], facepoints[i][2], 1.0));
}
// Project the 3 reference points onto the axis plane. They are now 2d points.
qvec2f facepoints_projected[3];
for (int i = 0; i < 3; i++) {
facepoints_projected[i] = projectToAxisPlane(snapped_normal, facepoints[i]);
}
// Now make 2 vectors out of our 3 points (so we are ignoring translation for now)
const qvec2f p0p1 = facepoints_projected[1] - facepoints_projected[0];
const qvec2f p0p2 = facepoints_projected[2] - facepoints_projected[0];
const qvec2f p0p1_uv = facepoints_uvs[1] - facepoints_uvs[0];
const qvec2f p0p2_uv = facepoints_uvs[2] - facepoints_uvs[0];
/*
Find a 2x2 transformation matrix that maps p0p1 to p0p1_uv, and p0p2 to p0p2_uv
[ a b ] [ p0p1.x ] = [ p0p1_uv.x ]
[ c d ] [ p0p1.y ] [ p0p1_uv.y ]
[ a b ] [ p0p2.x ] = [ p0p1_uv.x ]
[ c d ] [ p0p2.y ] [ p0p2_uv.y ]
writing as a system of equations:
a * p0p1.x + b * p0p1.y = p0p1_uv.x
c * p0p1.x + d * p0p1.y = p0p1_uv.y
a * p0p2.x + b * p0p2.y = p0p2_uv.x
c * p0p2.x + d * p0p2.y = p0p2_uv.y
back to a matrix equation, with the unknowns in a column vector:
[ p0p1_uv.x ] [ p0p1.x p0p1.y 0 0 ] [ a ]
[ p0p1_uv.y ] = [ 0 0 p0p1.x p0p1.y ] [ b ]
[ p0p2_uv.x ] [ p0p2.x p0p2.y 0 0 ] [ c ]
[ p0p2_uv.y ] [ 0 0 p0p2.x p0p2.y ] [ d ]
*/
const qmat4x4f M{
p0p1[0], 0, p0p2[0], 0, // col 0
p0p1[1], 0, p0p2[1], 0, // col 1
0, p0p1[0], 0, p0p2[0], // col 2
0, p0p1[1], 0, p0p2[1] // col 3
};
const qmat4x4f Minv = qv::inverse(M);
const qvec4f abcd = Minv * qvec4f(p0p1_uv[0], p0p1_uv[1], p0p2_uv[0], p0p2_uv[1]);
const qmat2x2f texPlaneToUV{abcd[0], abcd[2], // col 0
abcd[1], abcd[3]}; // col 1
{
// self check
// qvec2f uv01_test = texPlaneToUV * p0p1;
// qvec2f uv02_test = texPlaneToUV * p0p2;
// these fail if one of the texture axes is 0 length.
// checkEq(uv01_test, p0p1_uv, 0.01);
// checkEq(uv02_test, p0p2_uv, 0.01);
}
const texdef_quake_ed_noshift_t res = Reverse_QuakeEd(texPlaneToUV, faceplane, false);
// figure out shift based on facepoints[0]
const qvec3f testpoint = facepoints[0];
qvec2f uv0_actual = evalTexDefAtPoint(addShift(res, qvec2f(0, 0)), faceplane, testpoint);
qvec2f uv0_desired = qvec2f(worldToTexSpace * qvec4f(testpoint[0], testpoint[1], testpoint[2], 1.0f));
qvec2f shift = uv0_desired - uv0_actual;
// sometime we have very large shift values, normalize them to be smaller
shift = normalizeShift(texture, shift);
const texdef_quake_ed_t res2 = addShift(res, shift);
return res2;
}
float NormalizeDegrees(float degs)
{
while (degs < 0)
degs += 360;
while (degs > 360)
degs -= 360;
if (fabs(degs - 360.0) < 0.001)
degs = 0;
return degs;
}
bool EqualDegrees(float a, float b)
{
return fabs(NormalizeDegrees(a) - NormalizeDegrees(b)) < 0.001;
}
static std::pair<int, int> getSTAxes(const qvec3d &snapped_normal)
{
if (snapped_normal[0]) {
return std::make_pair(1, 2);
} else if (snapped_normal[1]) {
return std::make_pair(0, 2);
} else {
return std::make_pair(0, 1);
}
}
static qvec2f projectToAxisPlane(const qvec3d &snapped_normal, const qvec3d &point)
{
const std::pair<int, int> axes = getSTAxes(snapped_normal);
const qvec2f proj(point[axes.first], point[axes.second]);
return proj;
}
float clockwiseDegreesBetween(qvec2f start, qvec2f end)
{
start = qv::normalize(start);
end = qv::normalize(end);
const float cosAngle = max(-1.0f, min(1.0f, qv::dot(start, end)));
const float unsigned_degrees = acos(cosAngle) * (360.0 / (2.0 * Q_PI));
if (unsigned_degrees < ANGLEEPSILON)
return 0;
// get a normal for the rotation plane using the right-hand rule
// if this is pointing up (qvec3f(0,0,1)), it's counterclockwise rotation.
// if this is pointing down (qvec3f(0,0,-1)), it's clockwise rotation.
qvec3f rotationNormal = qv::normalize(qv::cross(qvec3f(start[0], start[1], 0.0f), qvec3f(end[0], end[1], 0.0f)));
const float normalsCosAngle = qv::dot(rotationNormal, qvec3f(0, 0, 1));
if (normalsCosAngle >= 0) {
// counterclockwise rotation
return -unsigned_degrees;
}
// clockwise rotation
return unsigned_degrees;
}
static texdef_quake_ed_noshift_t Reverse_QuakeEd(qmat2x2f M, const qbsp_plane_t &plane, bool preserveX)
{
// Check for shear, because we might tweak M to remove it
{
qvec2f Xvec = M.row(0);
qvec2f Yvec = M.row(1);
double cosAngle = qv::dot(qv::normalize(Xvec), qv::normalize(Yvec));
// const double oldXscale = sqrt(pow(M[0][0], 2.0) + pow(M[1][0], 2.0));
// const double oldYscale = sqrt(pow(M[0][1], 2.0) + pow(M[1][1], 2.0));
if (fabs(cosAngle) > 0.001) {
// Detected shear
if (preserveX) {
const float degreesToY = clockwiseDegreesBetween(Xvec, Yvec);
const bool CW = (degreesToY > 0);
// turn 90 degrees from Xvec
const qvec2f newYdir =
qv::normalize(qvec2f(qv::cross(qvec3f(0, 0, CW ? -1.0f : 1.0f), qvec3f(Xvec[0], Xvec[1], 0.0))));
// scalar projection of the old Yvec onto newYDir to get the new Yscale
const float newYscale = qv::dot(Yvec, newYdir);
Yvec = newYdir * static_cast<float>(newYscale);
} else {
// Preserve Y.
const float degreesToX = clockwiseDegreesBetween(Yvec, Xvec);
const bool CW = (degreesToX > 0);
// turn 90 degrees from Yvec
const qvec2f newXdir =
qv::normalize(qvec2f(qv::cross(qvec3f(0, 0, CW ? -1.0f : 1.0f), qvec3f(Yvec[0], Yvec[1], 0.0))));
// scalar projection of the old Xvec onto newXDir to get the new Xscale
const float newXscale = qv::dot(Xvec, newXdir);
Xvec = newXdir * static_cast<float>(newXscale);
}
// recheck
cosAngle = qv::dot(qv::normalize(Xvec), qv::normalize(Yvec));
if (fabs(cosAngle) > 0.001) {
FError("SHEAR correction failed\n");
}
// update M
M.at(0, 0) = Xvec[0];
M.at(0, 1) = Xvec[1];
M.at(1, 0) = Yvec[0];
M.at(1, 1) = Yvec[1];
}
}
// extract abs(scale)
const double absXscale = sqrt(pow(M.at(0, 0), 2.0) + pow(M.at(0, 1), 2.0));
const double absYscale = sqrt(pow(M.at(1, 0), 2.0) + pow(M.at(1, 1), 2.0));
const qmat2x2f applyAbsScaleM{static_cast<float>(absXscale), // col0
0,
0, // col1
static_cast<float>(absYscale)};
qvec3d vecs[2];
qvec3d snapped_normal;
TextureAxisFromPlane(plane, vecs[0], vecs[1], snapped_normal);
const qvec2f sAxis = projectToAxisPlane(snapped_normal, vecs[0]);
const qvec2f tAxis = projectToAxisPlane(snapped_normal, vecs[1]);
// This is an identity matrix possibly with negative signs.
const qmat2x2f axisFlipsM{sAxis[0], tAxis[0], // col0
sAxis[1], tAxis[1]}; // col1
// N.B. this is how M is built in SetTexinfo_QuakeEd_New and guides how we
// strip off components of it later in this function.
//
// qmat2x2f M = scaleM * rotateM * axisFlipsM;
// strip off the magnitude component of the scale, and `axisFlipsM`.
const qmat2x2f flipRotate = qv::inverse(applyAbsScaleM) * M * qv::inverse(axisFlipsM);
// We don't know the signs on the scales, which will mess up figuring out the rotation, so try all 4 combinations
for (float xScaleSgn : std::vector<float>{-1.0, 1.0}) {
for (float yScaleSgn : std::vector<float>{-1.0, 1.0}) {
// "apply" - matrix constructed to apply a guessed value
// "guess" - this matrix might not be what we think
const qmat2x2f applyGuessedFlipM{xScaleSgn, // col0
0,
0, // col1
yScaleSgn};
const qmat2x2f rotateMGuess = qv::inverse(applyGuessedFlipM) * flipRotate;
const float angleGuess = extractRotation(rotateMGuess);
// const qmat2x2f Mident = rotateMGuess * rotation2x2_deg(-angleGuess);
const qmat2x2f applyAngleGuessM = rotation2x2_deg(angleGuess);
const qmat2x2f Mguess = applyGuessedFlipM * applyAbsScaleM * applyAngleGuessM * axisFlipsM;
if (fabs(M.at(0, 0) - Mguess.at(0, 0)) < 0.001 && fabs(M.at(1, 0) - Mguess.at(1, 0)) < 0.001 &&
fabs(M.at(0, 1) - Mguess.at(0, 1)) < 0.001 && fabs(M.at(1, 1) - Mguess.at(1, 1)) < 0.001) {
texdef_quake_ed_noshift_t reversed;
reversed.rotate = angleGuess;
reversed.scale[0] = xScaleSgn / absXscale;
reversed.scale[1] = yScaleSgn / absYscale;
return reversed;
}
}
}
// TODO: detect when we expect this to fail, i.e. invalid texture axes (0-length),
// and throw an error if it fails unexpectedly.
// printf("Warning, Reverse_QuakeEd failed\n");
texdef_quake_ed_noshift_t fail;
return fail;
}
static void SetTexinfo_QuakeEd_New(
const qbsp_plane_t &plane, const qvec2d &shift, vec_t rotate, const qvec2d &scale, texvecf &out_vecs)
{
vec_t sanitized_scale[2];
for (int i = 0; i < 2; i++) {
sanitized_scale[i] = (scale[i] != 0.0) ? scale[i] : 1.0;
}
qvec3d vecs[2];
qvec3d snapped_normal;
TextureAxisFromPlane(plane, vecs[0], vecs[1], snapped_normal);
qvec2f sAxis = projectToAxisPlane(snapped_normal, vecs[0]);
qvec2f tAxis = projectToAxisPlane(snapped_normal, vecs[1]);
// This is an identity matrix possibly with negative signs.
qmat2x2f axisFlipsM{sAxis[0], tAxis[0], // col0
sAxis[1], tAxis[1]}; // col1
qmat2x2f rotateM = rotation2x2_deg(rotate);
qmat2x2f scaleM = scale2x2(1.0 / sanitized_scale[0], 1.0 / sanitized_scale[1]);
qmat2x2f M = scaleM * rotateM * axisFlipsM;
if (false) {
// Self-test for Reverse_QuakeEd
texdef_quake_ed_noshift_t reversed = Reverse_QuakeEd(M, plane, false);
// normalize
if (!EqualDegrees(reversed.rotate, rotate)) {
reversed.rotate += 180;
reversed.scale[0] *= -1;
reversed.scale[1] *= -1;
}
if (!EqualDegrees(reversed.rotate, rotate)) {
FError("wrong rotate got {} expected {}\n", reversed.rotate, rotate);
}
if (fabs(reversed.scale[0] - sanitized_scale[0]) > 0.001 ||
fabs(reversed.scale[1] - sanitized_scale[1]) > 0.001) {
FError("wrong scale, got {} {} exp {} {}\n", reversed.scale[0], reversed.scale[1], sanitized_scale[0],
sanitized_scale[1]);
}
}
// copy M into the output vectors
out_vecs = {};
const std::pair<int, int> axes = getSTAxes(snapped_normal);
// M[col][row]
// S
out_vecs.at(0, axes.first) = M.at(0, 0);
out_vecs.at(0, axes.second) = M.at(0, 1);
out_vecs.at(0, 3) = shift[0];
// T
out_vecs.at(1, axes.first) = M.at(1, 0);
out_vecs.at(1, axes.second) = M.at(1, 1);
out_vecs.at(1, 3) = shift[1];
}
static void SetTexinfo_QuakeEd(const qbsp_plane_t &plane, const std::array<qvec3d, 3> &planepts, const qvec2d &shift,
const vec_t &rotate, const qvec2d &scale, maptexinfo_t *out)
{
int i, j;
qvec3d vecs[2];
int sv, tv;
vec_t ang, sinv, cosv;
vec_t ns, nt;
qvec3d unused;
TextureAxisFromPlane(plane, vecs[0], vecs[1], unused);
/* Rotate axis */
ang = rotate / 180.0 * Q_PI;
sinv = sin(ang);
cosv = cos(ang);
if (vecs[0][0])
sv = 0;
else if (vecs[0][1])
sv = 1;
else
sv = 2; // unreachable, due to TextureAxisFromPlane lookup table
if (vecs[1][0])
tv = 0; // unreachable, due to TextureAxisFromPlane lookup table
else if (vecs[1][1])
tv = 1;
else
tv = 2;
for (i = 0; i < 2; i++) {
ns = cosv * vecs[i][sv] - sinv * vecs[i][tv];
nt = sinv * vecs[i][sv] + cosv * vecs[i][tv];
vecs[i][sv] = ns;
vecs[i][tv] = nt;
}
for (i = 0; i < 2; i++)
for (j = 0; j < 3; j++)
/* Interpret zero scale as no scaling */
out->vecs.at(i, j) = vecs[i][j] / (scale[i] ? scale[i] : 1);
out->vecs.at(0, 3) = shift[0];
out->vecs.at(1, 3) = shift[1];
if (false) {
// Self-test of SetTexinfo_QuakeEd_New
texvecf check;
SetTexinfo_QuakeEd_New(plane, shift, rotate, scale, check);
for (int i = 0; i < 2; i++) {
for (int j = 0; j < 4; j++) {
if (fabs(check.at(i, j) - out->vecs.at(i, j)) > 0.001) {
SetTexinfo_QuakeEd_New(plane, shift, rotate, scale, check);
FError("fail");
}
}
}
}
if (false) {
// Self-test of TexDef_BSPToQuakeEd
texdef_quake_ed_t reversed = TexDef_BSPToQuakeEd(plane, std::nullopt, out->vecs, planepts);
if (!EqualDegrees(reversed.rotate, rotate)) {
reversed.rotate += 180;
reversed.scale[0] *= -1;
reversed.scale[1] *= -1;
}
if (!EqualDegrees(reversed.rotate, rotate)) {
fmt::print("wrong rotate got {} expected {}\n", reversed.rotate, rotate);
}
if (fabs(reversed.scale[0] - scale[0]) > 0.001 || fabs(reversed.scale[1] - scale[1]) > 0.001) {
fmt::print("wrong scale, got {} {} exp {} {}\n", reversed.scale[0], reversed.scale[1], scale[0], scale[1]);
}
if (fabs(reversed.shift[0] - shift[0]) > 0.1 || fabs(reversed.shift[1] - shift[1]) > 0.1) {
fmt::print("wrong shift, got {} {} exp {} {}\n", reversed.shift[0], reversed.shift[1], shift[0], shift[1]);
}
}
}
static void SetTexinfo_QuArK(
parser_t &parser, const std::array<qvec3d, 3> &planepts, texcoord_style_t style, maptexinfo_t *out)
{
int i;
qvec3d vecs[2];
vec_t a, b, c, d;
vec_t determinant;
/*
* Type 1 uses vecs[0] = (pt[2] - pt[0]) and vecs[1] = (pt[1] - pt[0])
* Type 2 reverses the order of the vecs
* 128 is the scaling factor assumed by QuArK.
*/
switch (style) {
case TX_QUARK_TYPE1:
vecs[0] = planepts[2] - planepts[0];
vecs[1] = planepts[1] - planepts[0];
break;
case TX_QUARK_TYPE2:
vecs[0] = planepts[1] - planepts[0];
vecs[1] = planepts[2] - planepts[0];
break;
default: FError("Internal error: bad texture coordinate style");
}
vecs[0] *= 1.0 / 128.0;
vecs[1] *= 1.0 / 128.0;
a = qv::dot(vecs[0], vecs[0]);
b = qv::dot(vecs[0], vecs[1]);
c = b; /* qv::dot(vecs[1], vecs[0]); */
d = qv::dot(vecs[1], vecs[1]);
/*
* Want to solve for out->vecs:
*
* | a b | | out->vecs[0] | = | vecs[0] |
* | c d | | out->vecs[1] | | vecs[1] |
*
* => | out->vecs[0] | = __ 1.0__ | d -b | | vecs[0] |
* | out->vecs[1] | a*d - b*c | -c a | | vecs[1] |
*/
determinant = a * d - b * c;
if (fabs(determinant) < ZERO_EPSILON) {
logging::print("WARNING: line {}: Face with degenerate QuArK-style texture axes\n", parser.linenum);
for (i = 0; i < 3; i++)
out->vecs.at(0, i) = out->vecs.at(1, i) = 0;
} else {
for (i = 0; i < 3; i++) {
out->vecs.at(0, i) = (d * vecs[0][i] - b * vecs[1][i]) / determinant;
out->vecs.at(1, i) = -(a * vecs[1][i] - c * vecs[0][i]) / determinant;
}
}
/* Finally, the texture offset is indicated by planepts[0] */
for (i = 0; i < 3; ++i) {
vecs[0][i] = out->vecs.at(0, i);
vecs[1][i] = out->vecs.at(1, i);
}
out->vecs.at(0, 3) = -qv::dot(vecs[0], planepts[0]);
out->vecs.at(1, 3) = -qv::dot(vecs[1], planepts[0]);
}
static void SetTexinfo_Valve220(qmat<vec_t, 2, 3> &axis, const qvec2d &shift, const qvec2d &scale, maptexinfo_t *out)
{
int i;
for (i = 0; i < 3; i++) {
out->vecs.at(0, i) = axis.at(0, i) / scale[0];
out->vecs.at(1, i) = axis.at(1, i) / scale[1];
}
out->vecs.at(0, 3) = shift[0];
out->vecs.at(1, 3) = shift[1];
}
/*
ComputeAxisBase()
from q3map2
computes the base texture axis for brush primitive texturing
note: ComputeAxisBase here and in editor code must always BE THE SAME!
warning: special case behaviour of atan2( y, x ) <-> atan( y / x ) might not be the same everywhere when x == 0
rotation by (0,RotY,RotZ) assigns X to normal
*/
static void ComputeAxisBase(const qvec3d &normal_unsanitized, qvec3d &texX, qvec3d &texY)
{
vec_t RotY, RotZ;
qvec3d normal = normal_unsanitized;
/* do some cleaning */
if (fabs(normal[0]) < 1e-6) {
normal[0] = 0.0f;
}
if (fabs(normal[1]) < 1e-6) {
normal[1] = 0.0f;
}
if (fabs(normal[2]) < 1e-6) {
normal[2] = 0.0f;
}
/* compute the two rotations around y and z to rotate x to normal */
RotY = -atan2(normal[2], sqrt(normal[1] * normal[1] + normal[0] * normal[0]));
RotZ = atan2(normal[1], normal[0]);
/* rotate (0,1,0) and (0,0,1) to compute texX and texY */
texX[0] = -sin(RotZ);
texX[1] = cos(RotZ);
texX[2] = 0;
/* the texY vector is along -z (t texture coorinates axis) */
texY[0] = -sin(RotY) * cos(RotZ);
texY[1] = -sin(RotY) * sin(RotZ);
texY[2] = -cos(RotY);
}
static void SetTexinfo_BrushPrimitives(
const qmat<vec_t, 2, 3> &texMat, const qvec3d &faceNormal, int texWidth, int texHeight, texvecf &vecs)
{
qvec3d texX, texY;
ComputeAxisBase(faceNormal, texX, texY);
/*
derivation of the conversion below:
classic BSP texture vecs to texture coordinates:
u = (dot(vert, out->vecs[0]) + out->vecs[3]) / texWidth
brush primitives: (starting with q3map2 code, then rearranging it to look like the classic formula)
u = (texMat[0][0] * dot(vert, texX)) + (texMat[0][1] * dot(vert, texY)) + texMat[0][2]
factor out vert:
u = (vert[0] * (texX[0] * texMat[0][0] + texY[0] * texMat[0][1]))
+ (vert[1] * (texX[1] * texMat[0][0] + texY[1] * texMat[0][1]))
+ (vert[2] * (texX[2] * texMat[0][0] + texY[2] * texMat[0][1]))
+ texMat[0][2];
multiplying that by 1 = (texWidth / texWidth) gives us something in the same shape as the classic formula,
so we can get out->vecs.
*/
vecs.at(0, 0) = texWidth * ((texX[0] * texMat.at(0, 0)) + (texY[0] * texMat.at(0, 1)));
vecs.at(0, 1) = texWidth * ((texX[1] * texMat.at(0, 0)) + (texY[1] * texMat.at(0, 1)));
vecs.at(0, 2) = texWidth * ((texX[2] * texMat.at(0, 0)) + (texY[2] * texMat.at(0, 1)));
vecs.at(0, 3) = texWidth * texMat.at(0, 2);
vecs.at(1, 0) = texHeight * ((texX[0] * texMat.at(1, 0)) + (texY[0] * texMat.at(1, 1)));
vecs.at(1, 1) = texHeight * ((texX[1] * texMat.at(1, 0)) + (texY[1] * texMat.at(1, 1)));
vecs.at(1, 2) = texHeight * ((texX[2] * texMat.at(1, 0)) + (texY[2] * texMat.at(1, 1)));
vecs.at(1, 3) = texHeight * texMat.at(1, 2);
}
// From FaceToBrushPrimitFace in GtkRadiant
static texdef_brush_primitives_t TexDef_BSPToBrushPrimitives(
const qplane3d &plane, const int texSize[2], const texvecf &in_vecs)
{
qvec3d texX, texY;
ComputeAxisBase(plane.normal, texX, texY);
// compute projection vector
qvec3d proj = plane.normal * plane.dist;
// (0,0) in plane axis base is (0,0,0) in world coordinates + projection on the affine plane
// (1,0) in plane axis base is texX in world coordinates + projection on the affine plane
// (0,1) in plane axis base is texY in world coordinates + projection on the affine plane
// use old texture code to compute the ST coords of these points
qvec2d st[] = {in_vecs.uvs(proj, texSize[0], texSize[1]), in_vecs.uvs(texX + proj, texSize[0], texSize[1]),
in_vecs.uvs(texY + proj, texSize[0], texSize[1])};
// compute texture matrix
texdef_brush_primitives_t res;
res.set_col(2, st[0]);
res.set_col(0, st[1] - st[0]);
res.set_col(1, st[2] - st[0]);
return res;
}
static void ParsePlaneDef(parser_t &parser, std::array<qvec3d, 3> &planepts)
{
int i, j;
for (i = 0; i < 3; i++) {
if (i != 0)
parser.parse_token();
if (parser.token != "(")
goto parse_error;
for (j = 0; j < 3; j++) {
parser.parse_token(PARSE_SAMELINE);
planepts[i][j] = std::stod(parser.token);
}
parser.parse_token(PARSE_SAMELINE);
if (parser.token != ")")
goto parse_error;
}
return;
parse_error:
FError("line {}: Invalid brush plane format", parser.linenum);
}
static void ParseValve220TX(parser_t &parser, qmat<vec_t, 2, 3> &axis, qvec2d &shift, vec_t &rotate, qvec2d &scale)
{
int i, j;
for (i = 0; i < 2; i++) {
parser.parse_token(PARSE_SAMELINE);
if (parser.token != "[")
goto parse_error;
for (j = 0; j < 3; j++) {
parser.parse_token(PARSE_SAMELINE);
axis.at(i, j) = std::stod(parser.token);
}
parser.parse_token(PARSE_SAMELINE);
shift[i] = std::stod(parser.token);
parser.parse_token(PARSE_SAMELINE);
if (parser.token != "]")
goto parse_error;
}
parser.parse_token(PARSE_SAMELINE);
rotate = std::stod(parser.token);
parser.parse_token(PARSE_SAMELINE);
scale[0] = std::stod(parser.token);
parser.parse_token(PARSE_SAMELINE);
scale[1] = std::stod(parser.token);
return;
parse_error:
FError("line {}: couldn't parse Valve220 texture info", parser.linenum);
}
static void ParseBrushPrimTX(parser_t &parser, qmat<vec_t, 2, 3> &texMat)
{
parser.parse_token(PARSE_SAMELINE);
if (parser.token != "(")
goto parse_error;
for (int i = 0; i < 2; i++) {
parser.parse_token(PARSE_SAMELINE);
if (parser.token != "(")
goto parse_error;
for (int j = 0; j < 3; j++) {
parser.parse_token(PARSE_SAMELINE);
texMat.at(i, j) = std::stod(parser.token);
}
parser.parse_token(PARSE_SAMELINE);
if (parser.token != ")")
goto parse_error;
}
parser.parse_token(PARSE_SAMELINE);
if (parser.token != ")")
goto parse_error;
return;
parse_error:
FError("line {}: couldn't parse Brush Primitives texture info", parser.linenum);
}
static void ParseTextureDef(parser_t &parser, mapface_t &mapface, const mapbrush_t &brush, maptexinfo_t *tx,
std::array<qvec3d, 3> &planepts, const qplane3d &plane)
{
vec_t rotate;
qmat<vec_t, 2, 3> texMat, axis;
qvec2d shift, scale;
texcoord_style_t tx_type;
quark_tx_info_t extinfo;
if (brush.format == brushformat_t::BRUSH_PRIMITIVES) {
ParseBrushPrimTX(parser, texMat);
tx_type = TX_BRUSHPRIM;
parser.parse_token(PARSE_SAMELINE);
mapface.texname = parser.token;
// Read extra Q2 params
extinfo = ParseExtendedTX(parser);
mapface.raw_info = extinfo.info;
} else if (brush.format == brushformat_t::NORMAL) {
parser.parse_token(PARSE_SAMELINE);
mapface.texname = parser.token;
parser.parse_token(PARSE_SAMELINE | PARSE_PEEK);
if (parser.token == "[") {
ParseValve220TX(parser, axis, shift, rotate, scale);
tx_type = TX_VALVE_220;
// Read extra Q2 params
extinfo = ParseExtendedTX(parser);
} else {
parser.parse_token(PARSE_SAMELINE);
shift[0] = std::stod(parser.token);
parser.parse_token(PARSE_SAMELINE);
shift[1] = std::stod(parser.token);
parser.parse_token(PARSE_SAMELINE);
rotate = std::stod(parser.token);
parser.parse_token(PARSE_SAMELINE);
scale[0] = std::stod(parser.token);
parser.parse_token(PARSE_SAMELINE);
scale[1] = std::stod(parser.token);
// Read extra Q2 params and/or QuArK subtype
extinfo = ParseExtendedTX(parser);
if (extinfo.quark_tx1) {
tx_type = TX_QUARK_TYPE1;
} else if (extinfo.quark_tx2) {
tx_type = TX_QUARK_TYPE2;
} else {
tx_type = TX_QUAKED;
}
}
mapface.raw_info = extinfo.info;
} else {
FError("Bad brush format");
}
// if we have texture defs, see if we should remap this one
if (auto it = qbsp_options.loaded_texture_defs.find(mapface.texname);
it != qbsp_options.loaded_texture_defs.end()) {
mapface.texname = std::get<0>(it->second);
if (std::get<1>(it->second).has_value()) {
mapface.raw_info = extinfo.info = std::get<1>(it->second).value();
}
}
// If we're not Q2 but we're loading a Q2 map, just remove the extra
// info so it can at least compile.
if (qbsp_options.target_game->id != GAME_QUAKE_II) {
extinfo.info = std::nullopt;
} else {
// assign animation to extinfo, so that we load the animated
// first one first
if (auto &wal = map.load_image_meta(mapface.texname.c_str())) {
if (!extinfo.info) {
extinfo.info = extended_texinfo_t{wal->contents, wal->flags, wal->value};
}
extinfo.info->animation = wal->animation;
} else if (!extinfo.info) {
extinfo.info = extended_texinfo_t{};
}
if (extinfo.info->contents.native & Q2_CONTENTS_TRANSLUCENT) {
// remove TRANSLUCENT; it's only meant to be set by the compiler
extinfo.info->contents.native &= ~Q2_CONTENTS_TRANSLUCENT;
// but give us detail if we lack trans. this is likely what they intended
if (!(extinfo.info->flags.native & (Q2_SURF_TRANS33 | Q2_SURF_TRANS66))) {
extinfo.info->contents.native |= Q2_CONTENTS_DETAIL;
logging::print("WARNING: {}: swapped TRANSLUCENT for DETAIL\n", mapface.line);
}
}
// This fixes a bug in some old maps.
if ((extinfo.info->flags.native & (Q2_SURF_SKY | Q2_SURF_NODRAW)) == (Q2_SURF_SKY | Q2_SURF_NODRAW)) {
extinfo.info->flags.native &= ~Q2_SURF_NODRAW;
logging::print("WARNING: {}: SKY | NODRAW mixed. Removing NODRAW.\n", mapface.line);
}
}
tx->miptex = FindMiptex(mapface.texname.c_str(), extinfo.info);
mapface.contents = {extinfo.info->contents};
tx->flags = mapface.flags = {extinfo.info->flags};
tx->value = mapface.value = extinfo.info->value;
contentflags_t contents{mapface.contents};
if (!contents.is_valid(qbsp_options.target_game, false)) {
auto old_contents = contents;
qbsp_options.target_game->contents_make_valid(contents);
logging::print("WARNING: {}: face has invalid contents {}, remapped to {}\n", mapface.line,
old_contents.to_string(qbsp_options.target_game), contents.to_string(qbsp_options.target_game));
}
switch (tx_type) {
case TX_QUARK_TYPE1:
case TX_QUARK_TYPE2: SetTexinfo_QuArK(parser, planepts, tx_type, tx); break;
case TX_VALVE_220: SetTexinfo_Valve220(axis, shift, scale, tx); break;
case TX_BRUSHPRIM: {
const auto &texture = map.load_image_meta(mapface.texname.c_str());
const int32_t width = texture ? texture->width : 64;
const int32_t height = texture ? texture->height : 64;
SetTexinfo_BrushPrimitives(texMat, plane.normal, width, height, tx->vecs);
break;
}
case TX_QUAKED:
default: SetTexinfo_QuakeEd(plane, planepts, shift, rotate, scale, tx); break;
}
}
bool mapface_t::set_planepts(const std::array<qvec3d, 3> &pts)
{
planepts = pts;
/* calculate the normal/dist plane equation */
qvec3d ab = planepts[0] - planepts[1];
qvec3d cb = planepts[2] - planepts[1];
vec_t length;
qvec3d normal = qv::normalize(qv::cross(ab, cb), length);
vec_t dist = qv::dot(planepts[1], normal);
planenum = map.add_or_find_plane({ normal, dist });
return length >= NORMAL_EPSILON;
}
const texvecf &mapface_t::get_texvecs() const
{
return map.mtexinfos.at(this->texinfo).vecs;
}
void mapface_t::set_texvecs(const texvecf &vecs)
{
// start with a copy of the current texinfo structure
maptexinfo_t texInfoNew = map.mtexinfos.at(this->texinfo);
texInfoNew.outputnum = std::nullopt;
texInfoNew.vecs = vecs;
this->texinfo = FindTexinfo(texInfoNew);
}
const qbsp_plane_t &mapface_t::get_plane() const
{
return map.get_plane(planenum);
}
bool IsValidTextureProjection(const qvec3f &faceNormal, const qvec3f &s_vec, const qvec3f &t_vec)
{
// TODO: This doesn't match how light does it (TexSpaceToWorld)
const qvec3f tex_normal = qv::normalize(qv::cross(s_vec, t_vec));
for (int i = 0; i < 3; i++)
if (std::isnan(tex_normal[i]))
return false;
const float cosangle = qv::dot(tex_normal, faceNormal);
if (std::isnan(cosangle))
return false;
if (fabs(cosangle) < ZERO_EPSILON)
return false;
return true;
}
inline bool IsValidTextureProjection(const mapface_t &mapface, const maptexinfo_t *tx)
{
return IsValidTextureProjection(mapface.get_plane().get_normal(), tx->vecs.row(0).xyz(), tx->vecs.row(1).xyz());
}
static void ValidateTextureProjection(mapface_t &mapface, maptexinfo_t *tx)
{
if (!IsValidTextureProjection(mapface, tx)) {
logging::print("WARNING: {}: repairing invalid texture projection (\"{}\" near {} {} {})\n",
mapface.line, mapface.texname, (int)mapface.planepts[0][0], (int)mapface.planepts[0][1],
(int)mapface.planepts[0][2]);
// Reset texturing to sensible defaults
const std::array<vec_t, 2> shift{0, 0};
const vec_t rotate = 0;
const std::array<vec_t, 2> scale = {1, 1};
SetTexinfo_QuakeEd(mapface.get_plane(), mapface.planepts, shift, rotate, scale, tx);
Q_assert(IsValidTextureProjection(mapface, tx));
}
}
static std::optional<mapface_t> ParseBrushFace(parser_t &parser, const mapbrush_t &brush, const mapentity_t &entity)
{
std::array<qvec3d, 3> planepts;
bool normal_ok;
maptexinfo_t tx;
int i, j;
mapface_t face;
face.line = brush.line.on_line(parser.linenum);
ParsePlaneDef(parser, planepts);
normal_ok = face.set_planepts(planepts);
ParseTextureDef(parser, face, brush, &tx, face.planepts, face.get_plane());
if (!normal_ok) {
logging::print("WARNING: line {}: Brush plane with no normal\n", parser.linenum);
return std::nullopt;
}
// ericw -- round texture vector values that are within ZERO_EPSILON of integers,
// to attempt to attempt to work around corrupted lightmap sizes in DarkPlaces
// (it uses 32 bit precision in CalcSurfaceExtents)
for (i = 0; i < 2; i++) {
for (j = 0; j < 4; j++) {
vec_t r = Q_rint(tx.vecs.at(i, j));
if (fabs(tx.vecs.at(i, j) - r) < ZERO_EPSILON)
tx.vecs.at(i, j) = r;
}
}
ValidateTextureProjection(face, &tx);
tx.flags = SurfFlagsForEntity(tx, entity);
face.texinfo = FindTexinfo(tx);
return face;
}
/*
=================
AddBrushBevels
Adds any additional planes necessary to allow the brush to be expanded
against axial bounding boxes
=================
*/
inline void AddBrushBevels(mapentity_t &e, mapbrush_t &b)
{
//
// add the axial planes
//
int32_t order = 0;
for (int32_t axis = 0; axis < 3; axis++) {
for (int32_t dir = -1; dir <= 1; dir += 2, order++) {
// see if the plane is already present
int32_t i;
for (i = 0; i < b.faces.size(); i++) {
auto &s = b.faces[i];
if (map.get_plane(s.planenum).get_normal()[axis] == dir) {
break;
}
}
if (i == b.faces.size()) {
// add a new side
mapface_t &s = b.faces.emplace_back();
qplane3d plane{};
plane.normal[axis] = dir;
if (dir == 1) {
plane.dist = b.bounds.maxs()[axis];
} else {
plane.dist = -b.bounds.mins()[axis];
}
s.planenum = map.add_or_find_plane(plane);
s.texinfo = b.faces[0].texinfo;
s.contents = b.faces[0].contents;
// fixme: why did we need to store all this stuff again, isn't
// it in texinfo?
s.raw_info = b.faces[0].raw_info;
s.flags = b.faces[0].flags;
s.texname = b.faces[0].texname;
s.value = b.faces[0].value;
s.bevel = true;
e.numboxbevels++;
}
// if the plane is not in it canonical order, swap it
if (i != order) {
std::swap(b.faces[order], b.faces[i]);
}
}
}
//
// add the edge bevels
//
if (b.faces.size() == 6) {
return; // pure axial
}
// test the non-axial plane edges
// note: no references to b.faces[...] stored since this modifies
// the vector.
for (size_t i = 6; i < b.faces.size(); i++) {
if (!b.faces[i].winding) {
continue;
}
for (size_t j = 0; j < b.faces[i].winding.size(); j++) {
size_t k = (j + 1) % b.faces[i].winding.size();
qvec3d vec = b.faces[i].winding[j] - b.faces[i].winding[k];
if (qv::normalizeInPlace(vec) < 0.5) {
continue;
}
vec = qv::Snap(vec);
for (k = 0 ; k < 3; k++) {
if (vec[k] == -1 || vec[k] == 1) {
break; // axial
}
}
if (k != 3) {
continue; // only test non-axial edges
}
// try the six possible slanted axials from this edge
for (size_t axis = 0; axis < 3; axis++) {
for (int32_t dir = -1; dir <= 1; dir += 2) {
// construct a plane
qplane3d plane {};
plane.normal[axis] = dir;
plane.normal = qv::cross(vec, plane.normal);
if (qv::normalizeInPlace(plane.normal) < 0.5) {
continue;
}
plane.dist = qv::dot(b.faces[i].winding[j], plane.normal);
// if all the points on all the sides are
// behind this plane, it is a proper edge bevel
for (k = 0; k < b.faces.size(); k++) {
// if this plane has allready been used, skip it
if (qv::epsilonEqual(b.faces[k].get_plane(), plane)) {
break;
}
auto &w2 = b.faces[k].winding;
if (!w2) {
continue;
}
size_t l = 0;
for (; l < w2.size(); l++) {
vec_t d = qv::dot(w2[l], plane.normal) - plane.dist;
if (d > 0.1) {
break; // point in front
}
}
if (l != w2.size()) {
break;
}
}
if (k != b.faces.size()) {
continue; // wasn't part of the outer hull
}
// add this plane
mapface_t &s = b.faces.emplace_back();
s.planenum = map.add_or_find_plane(plane);
s.texinfo = b.faces[0].texinfo;
s.contents = b.faces[0].contents;
// fixme: why did we need to store all this stuff again, isn't
// it in texinfo?
s.raw_info = b.faces[0].raw_info;
s.flags = b.faces[0].flags;
s.texname = b.faces[0].texname;
s.value = b.faces[0].value;
s.bevel = true;
e.numedgebevels++;
}
}
}
}
}
static mapbrush_t ParseBrush(parser_t &parser, mapentity_t &entity, const map_source_location &entity_source)
{
mapbrush_t brush;
// ericw -- brush primitives
if (!parser.parse_token(PARSE_PEEK))
FError("{}: unexpected EOF after { beginning brush", entity_source);
if (parser.token == "(") {
brush.format = brushformat_t::NORMAL;
} else {
parser.parse_token();
brush.format = brushformat_t::BRUSH_PRIMITIVES;
// optional
if (parser.token == "brushDef") {
if (!parser.parse_token())
FError("Brush primitives: unexpected EOF (nothing after brushDef)");
}
// mandatory
if (parser.token != "{")
FError("Brush primitives: expected second { at beginning of brush, got \"{}\"", parser.token);
}
// ericw -- end brush primitives
while (parser.parse_token()) {
// set linenum after first parsed token
if (!brush.line) {
brush.line = entity_source.on_line(parser.linenum);
}
if (parser.token == "}")
break;
std::optional<mapface_t> face = ParseBrushFace(parser, brush, entity);
if (!face) {
continue;
}
/* Check for duplicate planes */
bool discardFace = false;
for (auto &check : brush.faces) {
if (qv::epsilonEqual(check.get_plane(), face->get_plane())) {
logging::print("line {}: Brush with duplicate plane\n", parser.linenum);
discardFace = true;
continue;
}
if (qv::epsilonEqual(-check.get_plane(), face->get_plane())) {
/* FIXME - this is actually an invalid brush */
logging::print("line {}: Brush with duplicate plane\n", parser.linenum);
continue;
}
}
if (discardFace) {
continue;
}
/* Save the face, update progress */
brush.faces.emplace_back(std::move(face.value()));
}
// ericw -- brush primitives - there should be another closing }
if (brush.format == brushformat_t::BRUSH_PRIMITIVES) {
if (!parser.parse_token())
FError("Brush primitives: unexpected EOF (no closing brace)");
if (parser.token != "}")
FError("Brush primitives: Expected }, got: {}", parser.token);
}
// ericw -- end brush primitives
return brush;
}
bool ParseEntity(parser_t &parser, mapentity_t *entity, const map_source_location &map_source)
{
if (!parser.parse_token())
return false;
map_source_location entity_source = map_source.on_line(parser.linenum);
if (parser.token != "{") {
FError("{}: Invalid entity format, { not found", entity_source);
}
entity->mapbrushes.clear();
do {
if (!parser.parse_token())
FError("Unexpected EOF (no closing brace)");
if (parser.token == "}")
break;
else if (parser.token == "{") {
// once we run into the first brush, set up textures state.
EnsureTexturesLoaded();
entity->mapbrushes.emplace_back(ParseBrush(parser, *entity, entity_source));
} else {
ParseEpair(parser, entity);
}
} while (1);
// replace aliases
auto alias_it = qbsp_options.loaded_entity_defs.find(entity->epairs.get("classname"));
if (alias_it != qbsp_options.loaded_entity_defs.end()) {
for (auto &pair : alias_it->second) {
if (pair.first == "classname" || !entity->epairs.has(pair.first)) {
entity->epairs.set(pair.first, pair.second);
}
}
}
return true;
}
static void ScaleMapFace(mapface_t *face, const qvec3d &scale)
{
const qmat3x3d scaleM{// column-major...
scale[0], 0.0, 0.0, 0.0, scale[1], 0.0, 0.0, 0.0, scale[2]};
std::array<qvec3d, 3> new_planepts;
for (int i = 0; i < 3; i++) {
new_planepts[i] = scaleM * face->planepts[i];
}
face->set_planepts(new_planepts);
// update texinfo
const qmat3x3d inversescaleM{// column-major...
1 / scale[0], 0.0, 0.0, 0.0, 1 / scale[1], 0.0, 0.0, 0.0, 1 / scale[2]};
const auto &texvecs = face->get_texvecs();
texvecf newtexvecs;
for (int i = 0; i < 2; i++) {
const qvec4f in = texvecs.row(i);
const qvec3f in_first3(in);
const qvec3f out_first3 = inversescaleM * in_first3;
newtexvecs.set_row(i, {out_first3[0], out_first3[1], out_first3[2], in[3]});
}
face->set_texvecs(newtexvecs);
}
static void RotateMapFace(mapface_t *face, const qvec3d &angles)
{
const double pitch = DEG2RAD(angles[0]);
const double yaw = DEG2RAD(angles[1]);
const double roll = DEG2RAD(angles[2]);
qmat3x3d rotation = RotateAboutZ(yaw) * RotateAboutY(pitch) * RotateAboutX(roll);
std::array<qvec3d, 3> new_planepts;
for (int i = 0; i < 3; i++) {
new_planepts[i] = rotation * face->planepts[i];
}
face->set_planepts(new_planepts);
// update texinfo
const auto &texvecs = face->get_texvecs();
texvecf newtexvecs;
for (int i = 0; i < 2; i++) {
const qvec4f in = texvecs.row(i);
const qvec3f in_first3(in);
const qvec3f out_first3 = rotation * in_first3;
newtexvecs.set_row(i, {out_first3[0], out_first3[1], out_first3[2], in[3]});
}
face->set_texvecs(newtexvecs);
}
static void TranslateMapFace(mapface_t *face, const qvec3d &offset)
{
std::array<qvec3d, 3> new_planepts;
for (int i = 0; i < 3; i++) {
new_planepts[i] = face->planepts[i] + offset;
}
face->set_planepts(new_planepts);
// update texinfo
const auto &texvecs = face->get_texvecs();
texvecf newtexvecs;
for (int i = 0; i < 2; i++) {
qvec4f out = texvecs.row(i);
// CHECK: precision loss here?
out[3] += qv::dot(qvec3f(out), qvec3f(offset) * -1.0f);
newtexvecs.set_row(i, {out[0], out[1], out[2], out[3]});
}
face->set_texvecs(newtexvecs);
}
/**
* Loads an external .map file.
*
* The loaded brushes/planes/etc. will be stored in the global mapdata_t.
*/
static mapentity_t LoadExternalMap(const std::string &filename)
{
mapentity_t dest{};
auto file = fs::load(filename);
if (!file) {
FError("Couldn't load external map file \"{}\".\n", filename);
}
parser_t parser(file->data(), file->size());
map_source_location entity_source { std::make_shared<std::string>(filename), parser.linenum };
// parse the worldspawn
if (!ParseEntity(parser, &dest, entity_source)) {
FError("'{}': Couldn't parse worldspawn entity\n", filename);
}
const std::string &classname = dest.epairs.get("classname");
if (Q_strcasecmp("worldspawn", classname)) {
FError("'{}': Expected first entity to be worldspawn, got: '{}'\n", filename, classname);
}
// parse any subsequent entities, move any brushes to worldspawn
mapentity_t dummy{};
while (ParseEntity(parser, &dummy, entity_source = entity_source.on_line(parser.linenum))) {
// move the brushes to the worldspawn
dest.mapbrushes.insert(dest.mapbrushes.end(), std::make_move_iterator(dummy.mapbrushes.begin()), std::make_move_iterator(dummy.mapbrushes.end()));
// clear for the next loop iteration
dummy = mapentity_t();
}
if (!dest.mapbrushes.size()) {
FError("Expected at least one brush for external map {}\n", filename);
}
logging::print(
logging::flag::STAT, " {}: '{}': Loaded {} mapbrushes.\n", __func__, filename, dest.mapbrushes.size());
return dest;
}
void ProcessExternalMapEntity(mapentity_t *entity)
{
Q_assert(!qbsp_options.onlyents.value());
const std::string &classname = entity->epairs.get("classname");
if (Q_strcasecmp(classname, "misc_external_map"))
return;
const std::string &file = entity->epairs.get("_external_map");
const std::string &new_classname = entity->epairs.get("_external_map_classname");
// FIXME: throw specific error message instead? this might be confusing for mappers
Q_assert(!file.empty());
Q_assert(!new_classname.empty());
Q_assert(0 == entity->mapbrushes.size()); // misc_external_map must be a point entity
const mapentity_t external_worldspawn = LoadExternalMap(file);
// copy the brushes into the target
entity->mapbrushes = std::move(external_worldspawn.mapbrushes);
qvec3d origin;
entity->epairs.get_vector("origin", origin);
qvec3d angles;
entity->epairs.get_vector("_external_map_angles", angles);
if (qv::epsilonEmpty(angles, EQUAL_EPSILON)) {
angles[1] = entity->epairs.get_float("_external_map_angle");
}
qvec3d scale;
int ncomps = entity->epairs.get_vector("_external_map_scale", scale);
if (ncomps < 3) {
if (scale[0] == 0.0) {
scale = 1;
} else {
scale = scale[0];
}
}
for (auto &brush : entity->mapbrushes) {
for (auto &face : brush.faces) {
ScaleMapFace(&face, scale);
RotateMapFace(&face, angles);
TranslateMapFace(&face, origin);
}
}
entity->epairs.set("classname", new_classname);
// FIXME: Should really just delete the origin key?
entity->epairs.set("origin", "0 0 0");
}
void ProcessAreaPortal(mapentity_t *entity)
{
Q_assert(!qbsp_options.onlyents.value());
const std::string &classname = entity->epairs.get("classname");
if (Q_strcasecmp(classname, "func_areaportal"))
return;
// areaportal entities move their brushes, but don't eliminate
// the entity
// FIXME: print entity ID/line number
if (entity->mapbrushes.size() != 1) {
FError("func_areaportal can only be a single brush");
}
for (auto &brush : entity->mapbrushes) {
for (auto &face : brush.faces) {
face.contents.native = Q2_CONTENTS_AREAPORTAL;
face.texinfo = map.skip_texinfo;
}
}
entity->areaportalnum = ++map.numareaportals;
// set the portal number as "style"
entity->epairs.set("style", std::to_string(map.numareaportals));
}
/*
* Special world entities are entities which have their brushes added to the
* world before being removed from the map.
*/
bool IsWorldBrushEntity(const mapentity_t *entity)
{
const std::string &classname = entity->epairs.get("classname");
/*
These entities should have their classname remapped to the value of
_external_map_classname before ever calling IsWorldBrushEntity
*/
Q_assert(Q_strcasecmp(classname, "misc_external_map"));
if (!Q_strcasecmp(classname, "func_detail"))
return true;
if (!Q_strcasecmp(classname, "func_group"))
return true;
if (!Q_strcasecmp(classname, "func_detail_illusionary"))
return true;
if (!Q_strcasecmp(classname, "func_detail_wall"))
return true;
if (!Q_strcasecmp(classname, "func_detail_fence"))
return true;
if (!Q_strcasecmp(classname, "func_illusionary_visblocker"))
return true;
return false;
}
/**
* Some games need special entities that are merged into the world, but not
* removed from the map entirely.
*/
bool IsNonRemoveWorldBrushEntity(const mapentity_t *entity)
{
const std::string &classname = entity->epairs.get("classname");
if (!Q_strcasecmp(classname, "func_areaportal"))
return true;
return false;
}
/*
================
CalculateBrushBounds
================
*/
inline void CalculateBrushBounds(mapbrush_t &ob)
{
ob.bounds = {};
for (size_t i = 0; i < ob.faces.size(); i++) {
ob.faces[i].visible = false;
const auto &plane = ob.faces[i].get_plane();
std::optional<winding_t> w = BaseWindingForPlane(plane);
for (size_t j = 0; j < ob.faces.size() && w; j++) {
if (i == j) {
continue;
}
if (ob.faces[j].bevel) {
continue;
}
const auto &plane = map.get_plane(ob.faces[j].planenum ^ 1);
w = w->clip(plane, 0)[SIDE_FRONT]; //CLIP_EPSILON);
}
if (w) {
ob.faces[i].winding = w.value();
ob.faces[i].visible = true;
for (auto &p : w.value()) {
ob.bounds += p;
}
}
}
for (size_t i = 0; i < 3; i++) {
if (ob.bounds.mins()[0] <= -qbsp_options.worldextent.value() || ob.bounds.maxs()[0] >= qbsp_options.worldextent.value()) {
logging::print("WARNING: {}: brush bounds out of range\n", ob.line);
}
if (ob.bounds.mins()[0] >= qbsp_options.worldextent.value() || ob.bounds.maxs()[0] <= -qbsp_options.worldextent.value()) {
logging::print("WARNING: {}: no visible sides on brush\n", ob.line);
}
}
}
void ProcessMapBrushes()
{
logging::funcheader();
// calculate extents, if required
if (!qbsp_options.worldextent.value()) {
CalculateWorldExtent();
}
map.total_brushes = 0;
size_t num_faces = 0, num_bevels = 0, num_removed = 0, num_offset = 0;
// calculate brush extents and brush bevels
for (auto &entity : map.entities) {
/* Origin brush support */
entity.rotation = rotation_t::none;
for (auto it = entity.mapbrushes.begin(); it != entity.mapbrushes.end(); ) {
auto &brush = *it;
// calculate brush bounds
CalculateBrushBounds(brush);
const contentflags_t contents = Brush_GetContents(&brush);
// origin brushes are removed, and the origin of the entity is overwritten
// with its centroid.
if (contents.is_origin(qbsp_options.target_game)) {
if (&entity == map.world_entity()) {
logging::print("WARNING: Ignoring origin brush in worldspawn\n");
} else if (entity.epairs.has("origin")) {
// fixme-brushbsp: entity.line
logging::print("WARNING: Entity at {} has multiple origin brushes\n", entity.mapbrushes.front().faces[0].line);
} else {
entity.origin = brush.bounds.centroid();
entity.epairs.set("origin", qv::to_string(entity.origin));
}
num_removed++;
it = entity.mapbrushes.erase(it);
entity.rotation = rotation_t::origin_brush;
continue;
}
size_t old_num_faces = brush.faces.size();
num_faces += old_num_faces;
// add the brush bevels
AddBrushBevels(entity, brush);
num_bevels += brush.faces.size() - old_num_faces;
it++;
}
map.total_brushes += entity.mapbrushes.size();
/* Hipnotic rotation */
if (entity.rotation == rotation_t::none) {
if (!Q_strncasecmp(entity.epairs.get("classname"), "rotate_", 7)) {
entity.origin = FixRotateOrigin(&entity);
entity.rotation = rotation_t::hipnotic;
}
}
// offset brush bounds
if (entity.rotation != rotation_t::none) {
for (auto &brush : entity.mapbrushes) {
for (auto &f : brush.faces) {
// account for texture offset, from txqbsp-xt
if (!qbsp_options.oldrottex.value()) {
maptexinfo_t texInfoNew = map.mtexinfos.at(f.texinfo);
texInfoNew.outputnum = std::nullopt;
texInfoNew.vecs.at(0, 3) += qv::dot(entity.origin, texInfoNew.vecs.row(0).xyz());
texInfoNew.vecs.at(1, 3) += qv::dot(entity.origin, texInfoNew.vecs.row(1).xyz());
f.texinfo = FindTexinfo(texInfoNew);
}
qplane3d plane = f.get_plane();
plane.dist -= qv::dot(plane.normal, entity.origin);
f.planenum = map.add_or_find_plane(plane);
}
// re-calculate brush bounds/windings
CalculateBrushBounds(brush);
num_offset++;
}
}
#if 0
// test expansion
for (auto &brush : entity.mapbrushes) {
for (auto &face : brush.faces) {
qvec3d corner{};
const qvec3d hull[] = {{ -16, -16, -24 }, { 16, 16, 32 }};
for (int32_t x = 0; x < 3; x++) {
if (face.get_plane().get_normal()[x] > 0) {
corner[x] = hull[1][x];
} else if (face.get_plane().get_normal()[x] < 0) {
corner[x] = hull[0][x];
}
}
qplane3d plane = face.get_plane();
plane.dist += qv::dot(corner, plane.normal);
face.planenum = map.add_or_find_plane(plane);
// ???
//face.bevel = false;
}
// re-calculate brush bounds/windings
CalculateBrushBounds(brush);
}
#endif
}
logging::print(logging::flag::STAT, " {:8} brushes\n", map.total_brushes);
logging::print(logging::flag::STAT, " {:8} faces\n", num_faces);
logging::print(logging::flag::STAT, " {:8} bevel faces\n", num_bevels);
if (num_removed) {
logging::print(logging::flag::STAT, " {:8} utility brushes removed\n", num_removed);
}
if (num_offset) {
logging::print(logging::flag::STAT, " {:8} brushes translated from origins\n", num_offset);
}
logging::print(logging::flag::STAT, "\n");
}
void LoadMapFile(void)
{
logging::funcheader();
{
auto file = fs::load(qbsp_options.map_path);
if (!file) {
FError("Couldn't load map file \"{}\".\n", qbsp_options.map_path);
return;
}
parser_t parser(file->data(), file->size());
map_source_location entity_source { std::make_shared<std::string>(qbsp_options.map_path.string()) };
for (int i = 0;; i++) {
mapentity_t &entity = map.entities.emplace_back();
if (!ParseEntity(parser, &entity, entity_source.on_line(parser.linenum))) {
break;
}
}
// Remove dummy entity inserted above
assert(!map.entities.back().epairs.size());
assert(map.entities.back().brushes.empty());
map.entities.pop_back();
}
// -add function
if (!qbsp_options.add.value().empty()) {
auto file = fs::load(qbsp_options.add.value());
if (!file) {
FError("Couldn't load map file \"{}\".\n", qbsp_options.add.value());
return;
}
parser_t parser(file->data(), file->size());
map_source_location entity_source { std::make_shared<std::string>(qbsp_options.add.value()) };
for (int i = 0;; i++) {
mapentity_t &entity = map.entities.emplace_back();
if (!ParseEntity(parser, &entity, entity_source.on_line(parser.linenum))) {
break;
}
if (entity.epairs.get("classname") == "worldspawn") {
// The easiest way to get the additional map's worldspawn brushes
// into the base map's is to rename the additional map's worldspawn classname to func_group
entity.epairs.set("classname", "func_group");
}
}
// Remove dummy entity inserted above
assert(!map.entities.back().epairs.size());
assert(map.entities.back().brushes.empty());
map.entities.pop_back();
}
logging::print(logging::flag::STAT, " {:8} entities\n", map.entities.size());
logging::print(logging::flag::STAT, " {:8} unique texnames\n", map.miptex.size());
logging::print(logging::flag::STAT, " {:8} texinfo\n", map.mtexinfos.size());
logging::print(logging::flag::STAT, " {:8} unique planes\n", map.planes.size());
logging::print(logging::flag::STAT, "\n");
if (qbsp_options.expand.value()) {
TestExpandBrushes(map.world_entity());
}
}
static texdef_valve_t TexDef_BSPToValve(const texvecf &in_vecs)
{
texdef_valve_t res;
// From the valve -> bsp code,
//
// for (i = 0; i < 3; i++) {
// out->vecs[0][i] = axis[0][i] / scale[0];
// out->vecs[1][i] = axis[1][i] / scale[1];
// }
//
// We'll generate axis vectors of length 1 and pick the necessary scale
for (int i = 0; i < 2; i++) {
qvec3d axis = in_vecs.row(i).xyz();
const vec_t length = qv::normalizeInPlace(axis);
// avoid division by 0
if (length != 0.0) {
res.scale[i] = 1.0 / length;
} else {
res.scale[i] = 0.0;
}
res.shift[i] = in_vecs.at(i, 3);
res.axis.set_row(i, axis);
}
return res;
}
static void fprintDoubleAndSpc(std::ofstream &f, double v)
{
int rounded = rint(v);
if (static_cast<double>(rounded) == v) {
fmt::print(f, "{} ", rounded);
} else if (std::isfinite(v)) {
fmt::print(f, "{:0.17} ", v);
} else {
printf("WARNING: suppressing nan or infinity\n");
f << "0 ";
}
}
static void ConvertMapFace(std::ofstream &f, const mapface_t &mapface, const conversion_t format)
{
const auto &texture = map.load_image_meta(mapface.texname.c_str());
const maptexinfo_t &texinfo = map.mtexinfos.at(mapface.texinfo);
// Write plane points
for (int i = 0; i < 3; i++) {
f << " ( ";
for (int j = 0; j < 3; j++) {
fprintDoubleAndSpc(f, mapface.planepts[i][j]);
}
f << ") ";
}
switch (format) {
case conversion_t::quake:
case conversion_t::quake2: {
const texdef_quake_ed_t quakeed =
TexDef_BSPToQuakeEd(mapface.get_plane(), texture, texinfo.vecs, mapface.planepts);
fmt::print(f, "{} ", mapface.texname);
fprintDoubleAndSpc(f, quakeed.shift[0]);
fprintDoubleAndSpc(f, quakeed.shift[1]);
fprintDoubleAndSpc(f, quakeed.rotate);
fprintDoubleAndSpc(f, quakeed.scale[0]);
fprintDoubleAndSpc(f, quakeed.scale[1]);
if (mapface.raw_info.has_value()) {
f << mapface.raw_info->contents.native << " " << mapface.raw_info->flags.native << " "
<< mapface.raw_info->value;
}
break;
}
case conversion_t::valve: {
const texdef_valve_t valve = TexDef_BSPToValve(texinfo.vecs);
fmt::print(f, "{} [ ", mapface.texname);
fprintDoubleAndSpc(f, valve.axis.at(0, 0));
fprintDoubleAndSpc(f, valve.axis.at(0, 1));
fprintDoubleAndSpc(f, valve.axis.at(0, 2));
fprintDoubleAndSpc(f, valve.shift[0]);
f << "] [ ";
fprintDoubleAndSpc(f, valve.axis.at(1, 0));
fprintDoubleAndSpc(f, valve.axis.at(1, 1));
fprintDoubleAndSpc(f, valve.axis.at(1, 2));
fprintDoubleAndSpc(f, valve.shift[1]);
f << "] 0 ";
fprintDoubleAndSpc(f, valve.scale[0]);
fprintDoubleAndSpc(f, valve.scale[1]);
if (mapface.raw_info.has_value()) {
f << mapface.raw_info->contents.native << " " << mapface.raw_info->flags.native << " "
<< mapface.raw_info->value;
}
break;
}
case conversion_t::bp: {
int texSize[2];
texSize[0] = texture ? texture->width : 64;
texSize[1] = texture ? texture->height : 64;
const texdef_brush_primitives_t bp = TexDef_BSPToBrushPrimitives(mapface.get_plane(), texSize, texinfo.vecs);
f << "( ( ";
fprintDoubleAndSpc(f, bp.at(0, 0));
fprintDoubleAndSpc(f, bp.at(0, 1));
fprintDoubleAndSpc(f, bp.at(0, 2));
f << ") ( ";
fprintDoubleAndSpc(f, bp.at(1, 0));
fprintDoubleAndSpc(f, bp.at(1, 1));
fprintDoubleAndSpc(f, bp.at(1, 2));
// N.B.: always print the Q2/Q3 flags
fmt::print(f, ") ) {} ", mapface.texname);
if (mapface.raw_info.has_value()) {
f << mapface.raw_info->contents.native << " " << mapface.raw_info->flags.native << " "
<< mapface.raw_info->value;
} else {
f << "0 0 0";
}
break;
}
default: FError("Internal error: unknown texcoord_style_t\n");
}
f << '\n';
}
static void ConvertMapBrush(std::ofstream &f, const mapbrush_t &mapbrush, const conversion_t format)
{
f << "{\n";
if (format == conversion_t::bp) {
f << "brushDef\n";
f << "{\n";
}
for (int i = 0; i < mapbrush.faces.size(); i++) {
ConvertMapFace(f, mapbrush.faces[i], format);
}
if (format == conversion_t::bp) {
f << "}\n";
}
f << "}\n";
}
static void ConvertEntity(std::ofstream &f, const mapentity_t *entity, const conversion_t format)
{
f << "{\n";
for (const auto &[key, value] : entity->epairs) {
fmt::print(f, "\"{}\" \"{}\"\n", key, value);
}
for (auto &mapbrush : entity->mapbrushes) {
ConvertMapBrush(f, mapbrush, format);
}
f << "}\n";
}
void ConvertMapFile(void)
{
logging::funcheader();
std::string append;
switch (qbsp_options.convertmapformat.value()) {
case conversion_t::quake: append = "-quake"; break;
case conversion_t::quake2: append = "-quake2"; break;
case conversion_t::valve: append = "-valve"; break;
case conversion_t::bp: append = "-bp"; break;
default: FError("Internal error: unknown conversion_t\n");
}
fs::path filename = qbsp_options.bsp_path;
filename.replace_filename(qbsp_options.bsp_path.stem().string() + append).replace_extension(".map");
std::ofstream f(filename);
if (!f)
FError("Couldn't open file\n");
for (const mapentity_t &entity : map.entities) {
ConvertEntity(f, &entity, qbsp_options.convertmapformat.value());
}
logging::print("Conversion saved to {}\n", filename);
qbsp_options.fVerbose = false;
}
void PrintEntity(const mapentity_t *entity)
{
for (auto &epair : entity->epairs)
logging::print(logging::flag::STAT, " {:20} : {}\n", epair.first, epair.second);
}
void WriteEntitiesToString()
{
for (auto &entity : map.entities) {
/* Check if entity needs to be removed */
if (!entity.epairs.size() || IsWorldBrushEntity(&entity)) {
continue;
}
map.bsp.dentdata += "{\n";
for (auto &ep : entity.epairs) {
if (ep.first.size() >= qbsp_options.target_game->max_entity_key - 1) {
logging::print("WARNING: {} at {} has long key {} (length {} >= {})\n", entity.epairs.get("classname"),
entity.origin, ep.first, ep.first.size(), qbsp_options.target_game->max_entity_key - 1);
}
if (ep.second.size() >= qbsp_options.target_game->max_entity_value - 1) {
logging::print("WARNING: {} at {} has long value for key {} (length {} >= {})\n",
entity.epairs.get("classname"), entity.origin, ep.first, ep.second.size(),
qbsp_options.target_game->max_entity_value - 1);
}
fmt::format_to(std::back_inserter(map.bsp.dentdata), "\"{}\" \"{}\"\n", ep.first, ep.second);
}
map.bsp.dentdata += "}\n";
}
}
//====================================================================
inline std::optional<qvec3d> GetIntersection(const qplane3d &p1, const qplane3d &p2, const qplane3d &p3)
{
const vec_t denom = qv::dot(p1.normal, qv::cross(p2.normal, p3.normal));
if (denom == 0.f) {
return std::nullopt;
}
return (qv::cross(p2.normal, p3.normal) * p1.dist - qv::cross(p3.normal, p1.normal) * -p2.dist -
qv::cross(p1.normal, p2.normal) * -p3.dist) /
denom;
}
/*
=================
GetBrushExtents
=================
*/
inline vec_t GetBrushExtents(const mapbrush_t &hullbrush)
{
vec_t extents = -std::numeric_limits<vec_t>::infinity();
for (int32_t i = 0; i < hullbrush.faces.size() - 2; i++) {
for (int32_t j = i; j < hullbrush.faces.size() - 1; j++) {
for (int32_t k = j; k < hullbrush.faces.size(); k++) {
if (i == j || j == k || k == i) {
continue;
}
auto &fi = hullbrush.faces[i];
auto &fj = hullbrush.faces[j];
auto &fk = hullbrush.faces[k];
bool legal = true;
auto vertex = GetIntersection(fi.get_plane(), fj.get_plane(), fk.get_plane());
if (!vertex) {
continue;
}
for (int32_t m = 0; m < hullbrush.faces.size(); m++) {
if (hullbrush.faces[m].get_plane().distance_to(*vertex) > NORMAL_EPSILON) {
legal = false;
break;
}
}
if (legal) {
for (auto &p : *vertex) {
extents = max(extents, fabs(p));
}
}
}
}
}
return extents;
}
#include "tbb/parallel_for_each.h"
#include <atomic>
void CalculateWorldExtent(void)
{
std::atomic<vec_t> extents = -std::numeric_limits<vec_t>::infinity();
tbb::parallel_for_each(map.entities, [&](const mapentity_t &entity) {
tbb::parallel_for_each(entity.mapbrushes, [&](const mapbrush_t &mapbrush) {
const vec_t brushExtents = max(extents.load(), GetBrushExtents(mapbrush));
vec_t currentExtents = extents;
while (currentExtents < brushExtents && !extents.compare_exchange_weak(currentExtents, brushExtents))
;
});
});
vec_t hull_extents = 0;
for (auto &hull : qbsp_options.target_game->get_hull_sizes()) {
for (auto &v : hull.size()) {
hull_extents = max(hull_extents, fabs(v));
}
}
qbsp_options.worldextent.setValue(((extents + hull_extents) * 2) + SIDESPACE, settings::source::GAME_TARGET);
logging::print("INFO: world extents calculated to {} units\n", qbsp_options.worldextent.value());
}
/*
==================
WriteBspBrushMap
from q3map
==================
*/
void WriteBspBrushMap(const fs::path &name, const std::vector<std::unique_ptr<bspbrush_t>> &list)
{
std::shared_lock lock(map_planes_lock);
logging::print("writing {}\n", name);
std::ofstream f(name);
if (!f)
FError("Can't write {}", name);
fmt::print(f, "{{\n\"classname\" \"worldspawn\"\n");
for (auto &brush : list) {
fmt::print(f, "{{\n");
for (auto &face : brush->sides) {
// FIXME: Factor out this mess
winding_t w = BaseWindingForPlane(face.get_plane());
fmt::print(f, "( {} ) ", w[0]);
fmt::print(f, "( {} ) ", w[1]);
fmt::print(f, "( {} ) ", w[2]);
if (face.visible) {
fmt::print(f, "skip 0 0 0 1 1\n");
} else {
fmt::print(f, "nonvisible 0 0 0 1 1\n");
}
}
fmt::print(f, "}}\n");
}
fmt::print(f, "}}\n");
}
/*
================
TestExpandBrushes
Expands all the brush planes and saves a new map out to
allow visual inspection of the clipping bevels
from q3map
================
*/
static void TestExpandBrushes(const mapentity_t *src)
{
std::vector<std::unique_ptr<bspbrush_t>> hull1brushes;
for (auto &mapbrush : src->mapbrushes) {
bspbrush_t hull1brush = LoadBrush(src, &mapbrush, {CONTENTS_SOLID},
qbsp_options.target_game->id == GAME_QUAKE_II ? HULL_COLLISION : 1);
hull1brushes.emplace_back(std::make_unique<bspbrush_t>(std::move(hull1brush)));
}
WriteBspBrushMap("expanded.map", hull1brushes);
}
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