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diff --git a/src/core/model.cc b/src/core/model.cc
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+/*
+ render/model.h
+ This file is part of the Osirion project and is distributed under
+ the terms of the GNU General Public License version 2
+*/
+
+#include <iostream>
+#include <string>
+#include <fstream>
+#include <iomanip>
+#include <sstream>
+#include <vector>
+#include <list>
+
+#include "render/model.h"
+#include "render/gl.h"
+#include "filesystem/filesystem.h"
+
+namespace render
+{
+
+const float MAX_BOUNDS = 8192;
+const float delta = 10e-10;
+
+Engine::Engine(math::Vector3f const & location) :
+ engine_location(location)
+{}
+
+Engine::~Engine()
+{}
+
+std::map<std::string, Model*> Model::registry;
+
+Model::Model(std::string const & name) :
+ model_name(name)
+{
+ model_scale = 1.0f / 1024.0f;
+
+ std::string fn("maps/");
+ fn.append(name);
+ fn.append(".map");
+ filesystem::File *f = filesystem::open(fn.c_str());
+
+ if (!f) {
+ return;
+ }
+
+ fn = f->path();
+ fn.append(f->name());
+ filesystem::close(f);
+
+ std::ifstream ifs(fn.c_str());
+ if (!ifs.is_open()) {
+ con_warn << "Could not stream " << fn << "!\n";
+ return;
+ }
+
+ // --------- the actual reading
+ using math::Vector3f;
+ using math::Plane3f;
+
+ std::vector<Plane3f *> planes;
+ unsigned int level = 0;
+ char data[1024];
+
+ std::string class_name;
+ math::Vector3f class_origin;
+ float class_angle;
+
+ while (ifs) {
+ ifs.getline(data, 1023);
+ std::istringstream linestream(data);
+ std::string firstword;
+
+ if (linestream >> firstword) {
+ if (firstword == "//") {
+ //cout << " COMMENT!" << std::endl;
+ continue;
+ } else if (firstword == "{") {
+ level ++;
+ //cout << " LEVEL +" << level << std::endl;
+ } else if (firstword == "}") {
+ //cout << " LEVEL -" << level << std::endl;
+ if ((level == 2) && (class_name == "worldspawn")) {
+ //cout << "brush with " << planes.size() << " faces" << std::endl;
+
+ // for every face
+ std::vector<Vector3f *>points;
+ for (std::vector<Plane3f *>::iterator face = planes.begin(); face != planes.end(); face++) {
+ make_face((*face), planes);
+ }
+
+ // clean planes
+ for (std::vector<Plane3f *>::iterator it = planes.begin(); it != planes.end(); it++) {
+ delete(*it);
+ }
+ planes.clear();
+
+ } else if ((level == 1) && (class_name == "target_engine")) {
+ //con_debug << " engine at " << class_origin << "\n";
+ add_engine(new Engine(class_origin * model_scale));
+ }
+
+ if (level == 1) {
+ class_angle = 0;
+ class_name.clear();
+ class_origin = Vector3f(0,0,0);
+ }
+
+ level--;
+
+ } else if (firstword == "\"classname\"") {
+ class_name.clear();
+ if (linestream >> class_name) {
+ if (class_name.size() > 2) {
+ class_name.erase(0,1);
+ class_name.erase(class_name.size()-1, 1);
+ //linestream >> class_name;
+ //con_debug << " classname '" << class_name << "'" << std::endl;
+ } else {
+ class_name.clear();
+ }
+ } else {
+ //cout << " EMPTY CLASS" << std::endl;
+ }
+ } else if (firstword == "\"origin\"") {
+ std::string tmp;
+ char c;
+ while ((linestream.get(c)) && (c != '"'));
+ while ((linestream.get(c)) && (c != '"'))
+ tmp += c;
+ std::istringstream is(tmp);
+ is >> class_origin.x;
+ is >> class_origin.y;
+ is >> class_origin.z;
+ //con_debug << " origin '" << class_origin << "'" << std::endl;
+
+ } else if (firstword == "\"angle\"") {
+ std::string tmp;
+ char c;
+ while ((linestream.get(c)) && (c != '"'));
+ while ((linestream.get(c)) && (c != '"'))
+ tmp += c;
+ std::istringstream is(tmp);
+ is >> class_angle;
+ //con_debug << " angle '" << class_angle << "'" << std::endl;
+ } else if (firstword == "(") {
+ if ((level == 2) && (class_name == "worldspawn")) {
+ //cout << " BRUSH PLANE" << std::endl;
+ Vector3f p1;
+ Vector3f p2;
+ Vector3f p3;
+ std::string tmp;
+ std::string texture;
+
+ linestream >> p1;
+ linestream >> tmp; // )
+ linestream >> tmp; // (
+ linestream >> p2;
+ linestream >> tmp; // )
+ linestream >> tmp; // (
+ linestream >> p3;
+ linestream >> tmp; // )
+ linestream >> texture;
+
+ //cout << data << std::endl;
+ //cout << "(" << p1 << ") (" << p2 << ") (" << p3 << ") " << texture << std::endl;
+
+ Plane3f *plane = new Plane3f(p1, p2, p3);
+ plane->texture() = texture;
+ planes.push_back(plane);
+ //cout << "normal " << plane->normal() << std::endl;
+ } else {
+ //cout << " UNKNOWN line for '" << classname << "' level " << level << std::endl;
+ }
+ }
+ }
+ }
+
+ ifs.close();
+
+ con_debug << " maps/" << name << ".map " << model_face.size() << " polygons\n";
+}
+
+Model::~Model()
+{
+ // delete all faces
+ for (std::list<Face *>::iterator fit = model_face.begin(); fit != model_face.end(); fit++) {
+ delete(*fit);
+ }
+ model_face.clear();
+
+ // delete all engines
+ for (std::list<Engine *>::iterator eit = model_engine.begin(); eit != model_engine.end(); eit++) {
+ delete(*eit);
+ }
+ model_engine.clear();
+}
+
+void Model::make_face(math::Plane3f *face, std::vector<math::Plane3f *> & planes)
+{
+ using math::Vector3f;
+ using math::Plane3f;
+
+ // ignore caulk
+ if (face->texture() == "common/caulk") {
+ return;
+ }
+
+ // using suggestions from
+ // http://www.flipcode.com/archives/Level_Editing.shtml
+
+ //cout << "Face with normal " << face->normal() << endl;
+ std::vector<math::Vector3f *> vl;
+
+ // inital vertexes
+
+ // check if the face is x-axis oriented
+ if ((fabsf(face->normal().x) >= fabsf(face->normal().y)) && (fabsf(face->normal().x) >= fabsf(face->normal().z))) {
+ //cout << " x oriented" << std::endl;
+
+ if (face->normal().x >= 0) {
+ vl.push_back(new math::Vector3f(0, -MAX_BOUNDS, -MAX_BOUNDS));
+ vl.push_back(new math::Vector3f(0, -MAX_BOUNDS, MAX_BOUNDS));
+ vl.push_back(new math::Vector3f(0, MAX_BOUNDS, MAX_BOUNDS));
+ vl.push_back(new math::Vector3f(0, MAX_BOUNDS, -MAX_BOUNDS));
+ } else {
+ vl.push_back(new math::Vector3f(0, MAX_BOUNDS, -MAX_BOUNDS));
+ vl.push_back(new math::Vector3f(0, MAX_BOUNDS, MAX_BOUNDS));
+ vl.push_back(new math::Vector3f(0, -MAX_BOUNDS, MAX_BOUNDS));
+ vl.push_back(new math::Vector3f(0, -MAX_BOUNDS, -MAX_BOUNDS));
+ }
+ // calculate the x coordinate of each face vertex
+ for (std::vector<Vector3f *>::iterator it = vl.begin(); it != vl.end(); it++) {
+ (*it)->x = (-face->d() -
+ face->normal().z * (*it)->z -
+ face->normal().y * (*it)->y) /
+ face->normal().x;
+ }
+ }
+
+ // check if the face is y-axis oriented
+ else if ((fabsf(face->normal().y) >= fabsf(face->normal().x)) && (fabsf(face->normal().y) >= fabsf(face->normal().z))) {
+ //cout << " y oriented" << std::endl;
+
+ if (face->normal().y >= 0) {
+ vl.push_back(new Vector3f(MAX_BOUNDS, 0, -MAX_BOUNDS));
+ vl.push_back(new Vector3f(MAX_BOUNDS, 0, MAX_BOUNDS));
+ vl.push_back(new Vector3f(-MAX_BOUNDS, 0, MAX_BOUNDS));
+ vl.push_back(new Vector3f(-MAX_BOUNDS, 0, -MAX_BOUNDS));
+ } else {
+ vl.push_back(new Vector3f(-MAX_BOUNDS, 0, -MAX_BOUNDS));
+ vl.push_back(new Vector3f(-MAX_BOUNDS, 0, MAX_BOUNDS));
+ vl.push_back(new Vector3f(MAX_BOUNDS, 0, MAX_BOUNDS));
+ vl.push_back(new Vector3f(MAX_BOUNDS, 0, -MAX_BOUNDS));
+ }
+
+ // calculate the x coordinate of each face vertex
+ for (std::vector<Vector3f *>::iterator it = vl.begin(); it != vl.end(); it++) {
+ (*it)->y = (-face->d() -
+ face->normal().z * (*it)->z -
+ face->normal().x * (*it)->x) /
+ face->normal().y;
+ }
+ }
+
+ // face must be z-axis oriented
+ else {
+ //cout << " z oriented" << std::endl;
+ if (face->normal().z >= 0) {
+ vl.push_back(new Vector3f(-MAX_BOUNDS, -MAX_BOUNDS, 0));
+ vl.push_back(new Vector3f(-MAX_BOUNDS, MAX_BOUNDS, 0));
+ vl.push_back(new Vector3f(MAX_BOUNDS, MAX_BOUNDS, 0));
+ vl.push_back(new Vector3f(MAX_BOUNDS, -MAX_BOUNDS, 0));
+ } else {
+ vl.push_back(new Vector3f(MAX_BOUNDS, -MAX_BOUNDS, 0));
+ vl.push_back(new Vector3f(MAX_BOUNDS, MAX_BOUNDS, 0));
+ vl.push_back(new Vector3f(-MAX_BOUNDS, MAX_BOUNDS, 0));
+ vl.push_back(new Vector3f(-MAX_BOUNDS, -MAX_BOUNDS, 0));
+ }
+
+ // calculate the x coordinate of each face vertex
+ for (std::vector<Vector3f *>::iterator it = vl.begin(); it != vl.end(); it++) {
+ (*it)->z = (-face->d() -
+ face->normal().x * (*it)->x -
+ face->normal().y * (*it)->y) /
+ face->normal().z;
+ }
+ }
+
+
+ // intersect the face with every plane
+ for (std::vector<Plane3f *>::iterator pit = planes.begin(); pit != planes.end(); pit++) {
+ Plane3f *plane = (*pit);
+ if (plane == face) {
+ continue;
+ }
+
+ Vector3f fn = crossproduct(face->point(1)-face->point(0), face->point(2)-face->point(0));
+ Vector3f pn = crossproduct(plane->point(1)-plane->point(0), plane->point(2)-plane->point(0));
+
+ Vector3f t = crossproduct(fn, pn);
+ if ((t.x == 0) && (t.y == 0) && (t.z == 0)) {
+ continue;
+ }
+
+ //cout << " intersecting with plane with normal " << plane->normal() << std::endl;
+
+ // intersect face with plane
+ for (int i=0; vl.size() - i > 0; i++) {
+
+ Vector3f v(*vl.at(i));
+
+
+ Vector3f next;
+ if (vl.size() - i > 1) {
+ //cout << " -- at " << i+1 << std::endl;
+ next = *vl.at(i+1);
+ } else {
+ next = *vl.front();
+ }
+
+ Vector3f prev;
+ if (i > 0) {
+ //cout << " -- at " << i-1 << std::endl;
+ prev = *vl.at(i-1);
+ } else {
+ prev = *vl.back();
+ }
+
+ //cout << " vertex " << i << " prev " << prev << " v " << v << " next " << next << std::endl;
+ if ((v.x*plane->normal().x + v.y*plane->normal().y + v.z*plane->normal().z +plane->d()) < delta) {
+
+ // find current
+ std::vector<Vector3f *>::iterator vit = vl.begin();
+ while ((*vit) != vl.at(i)) {
+ vit++;
+ }
+
+ // check if prev - v intersects with plane
+ if ((prev.x*plane->normal().x + prev.y*plane->normal().y + prev.z*plane->normal().z + plane->d()) > -delta) {
+
+ // calculate intersection
+ float t1 = -plane->normal().x * prev.x - plane->normal().y * prev.y - plane->normal().z * prev.z -plane->d();
+ float t2 = (plane->normal().x * v.x - plane->normal().x * prev.x +
+ plane->normal().y * v.y - plane->normal().y * prev.y +
+ plane->normal().z * v.z - plane->normal().z * prev.z);
+ //cout << "prev t2 " << t2 << std::endl;
+ Vector3f *s = new Vector3f;
+
+ if (t2 == 0) {
+ *s = v;
+ } else {
+ for (int j = 0; j < 3; j++)
+ (*s)[j] = prev [j] + t1 * (v[j] - prev[j]) / t2;
+ }
+
+ //cout << " added " << *s << std::endl;
+ vit = vl.insert(vit,s);
+ vit++;
+ i++;
+ }
+
+ // check if next - v intersects with plane
+ if ((next.x*plane->normal().x + next.y*plane->normal().y + next.z*plane->normal().z + plane->d()) > -delta) {
+ // calculate intersection
+
+ // calculate intersection
+ float t1 = -plane->normal().x * v.x - plane->normal().y * v.y - plane->normal().z * v.z -plane->d();
+ float t2 = (plane->normal().x * next.x - plane->normal().x * v.x +
+ plane->normal().y * next.y - plane->normal().y * v.y +
+ plane->normal().z * next.z - plane->normal().z * v.z);
+ //cout << "next t2 " << t2 << std::endl;
+ Vector3f *s = new Vector3f;
+
+ if (t2 == 0) {
+ *s = v;
+ } else {
+ for (int j = 0; j < 3; j++)
+ (*s)[j] = v [j] + t1 * (next[j] - v[j]) / t2;
+ }
+
+ //cout << " added " << *s << std::endl;
+ vit = vl.insert(vit,s);
+ vit++;
+ i++;
+ }
+
+ // erase
+ delete *vit;
+ vl.erase(vit);
+ i--;
+ }
+
+ }
+ }
+
+ if (vl.size() > 2) {
+
+ math::Color *color = 0;
+ if (face->texture() == "colors/white") {
+ color = new math::Color(1, 1, 1);
+ } else if (face->texture() == "colors/grey90") {
+ color = new math::Color(0.9, 0.9, 0.9);
+ } else if (face->texture() == "colors/grey75") {
+ color = new math::Color(0.75, 0.75, 0.75);
+ } else if (face->texture() == "colors/grey50") {
+ color = new math::Color(0.5, 0.5, 0.5);
+ } else if (face->texture() == "colors/grey25") {
+ color = new math::Color(0.25, 0.25, 0.25);
+ } else if (face->texture() == "colors/black") {
+ color = new math::Color(0, 0, 0);
+ } else if (face->texture() == "common/entity") {
+ color = 0;
+ } else
+ color = new math::Color(1.0f, 0.0, 1.0f);
+
+ Face *mf = new Face(face->normal()*-1, color);
+ if (color) delete color;
+
+ for (std::vector<Vector3f *>::iterator it = vl.begin(); it != vl.end(); it++) {
+ mf->add_vertex(*(*it) * model_scale);
+ }
+
+ //con_debug << "adding face\n";
+ add_face(mf);
+ } else {
+ con_debug << "Unresolved face!\n";
+ }
+
+ for (std::vector<Vector3f *>::iterator it = vl.begin(); it != vl.end(); it++) {
+ delete(*it);
+ }
+
+ vl.clear();
+
+}
+
+void Model::add_face(Face *face)
+{
+ model_face.push_back(face);
+}
+
+void Model::add_engine(Engine *engine)
+{
+ model_engine.push_back(engine);
+}
+
+void Model::draw(core::Entity const * entity, math::Vector3f const & eye)
+{
+ //gl::scale(model_scale, model_scale, model_scale);
+
+ // calculate a normal from eye to entity location
+ math::Vector3f n = entity->location() - eye;
+ n.normalize();
+
+ // draw all faces
+ for (std::list<Face *>::iterator fit = model_face.begin(); fit != model_face.end(); fit++) {
+ // poor man's lighting
+ // set the face color depending on the viewing direction
+ //float d = fabsf(math::dotproduct(n, (*fit)->normal()));
+
+ //if (d > 1)
+ // d = 1;
+ //d = 0.5f + d/2;
+
+ if ((*fit)->color()) {
+ render::gl::color(*(*fit)->color());
+ } else {
+ render::gl::color(entity->color());
+ }
+ (*fit)->draw();
+ }
+}
+
+void Model::draw(core::EntityControlable const * entity, math::Vector3f const & eye)
+{
+ // draw the model
+ draw((core::Entity *) entity, eye);
+
+ // draw engines
+ // all engines are assumed to point to the rear
+ if (model_engine.size() && entity->thrust()) {
+ gl::color(1.0f,0 ,0);
+ gl::begin(gl::Lines);
+
+ for (std::list<Engine *>::iterator eit = model_engine.begin(); eit != model_engine.end(); eit++) {
+ math::Vector3f const & v = (*eit)->location();
+ gl::vertex(v);
+ gl::vertex(v.x - 0.0625f*entity->thrust(), v.y, v.z);
+ }
+ gl::end();
+ }
+}
+
+Model *Model::find(std::string const & name)
+{
+ std::map<std::string, Model*>::iterator it = registry.find(name);
+ if (it == registry.end())
+ return 0;
+ else
+ return (*it).second;
+}
+
+Model *Model::get(std::string const & name)
+{
+ Model *model = find(name);
+ if (!model) {
+ model = new Model(name);
+ registry[model->name()] = model;
+ }
+ return model;
+}
+
+void Model::clear()
+{
+ // delete all models in the registry
+ for (std::map<std::string, Model*>::iterator mit = registry.begin(); mit != registry.end(); mit++) {
+ delete(*mit).second;
+ }
+ registry.clear();
+}
+
+void Model::list()
+{
+ for (std::map<std::string, Model*>::iterator mit = registry.begin(); mit != registry.end(); mit++) {
+ con_print << " " << (*mit).second->model_name << " " << (*mit).second->model_face.size() << " polys\n";
+ }
+ con_print << registry.size() << " registered models" << std::endl;
+}
+}