feat: first steps

.gitignore

@@ -8,4 +8,5 @@ engine/CMakeFiles/*
 .idea/*
 .vscode/*
 generator/generator
-engine/engine
+engine/engine
+build

engine/src/Camera.cpp

@@ -0,0 +1,29 @@
+#include "utils.hpp"
+
+class Camera {
+public:
+    Point position;
+    Point lookAt;
+    Point up;
+    int fov;
+    float near;
+    float far;
+
+    Camera() {
+        this->position = Point();
+        this->lookAt = Point();
+        this->up = Point();
+        this->fov = 0;
+        this->near = 0;
+        this->far = 0;
+    }
+
+    Camera(Point position, Point lookAt, Point up, int fov, float near, float far) {
+        this->position = position;
+        this->lookAt = lookAt;
+        this->up = up;
+        this->fov = fov;
+        this->near = near;
+        this->far = far;
+    }
+};

engine/src/Configuration.cpp

@@ -0,0 +1,15 @@
+#include "Window.cpp"
+#include "Camera.cpp"
+
+class Configuration {
+public:
+    Window window;
+    Camera camera;
+    std::vector<char*> models;
+
+    Configuration(Window window, Camera camera, std::vector<char*> models) {
+        this->window = window;
+        this->camera = camera;
+        this->models = models;
+    }
+};

engine/src/Window.cpp

@@ -0,0 +1,15 @@
+class Window {
+public:
+    float width;
+    float height;
+
+    Window() {
+        this->width = 0;
+        this->height = 0;
+    }
+
+    Window(float width, float height) {
+        this->width = width;
+        this->height = height;
+    }
+};

engine/src/parse.cpp

@@ -0,0 +1,79 @@
+#include "Configuration.cpp"
+#include "Camera.cpp"
+#include "Window.cpp"
+
+#include <iostream>
+#include <fstream>
+
+#include "utils.hpp"
+
+#include "../../lib/rapidxml-1.13/rapidxml.hpp"
+
+Configuration parseConfig(char* filename) {
+    // open file in read mode
+    std::fstream file;
+    file.open(filename, std::ios::in);
+
+    // check if the file was opened successfully
+    if (!file.is_open()) {
+        std::cerr << "Error opening the file!" << std::endl;
+        exit(1);
+    }
+
+    // read the XML file content into a string
+    std::string xmlContent((std::istreambuf_iterator<char>(file)), std::istreambuf_iterator<char>());
+    file.close();
+
+    // parse the XML string using RapidXML
+    rapidxml::xml_document<> doc;
+    doc.parse<0>(&xmlContent[0]);
+
+    // access the root node
+    rapidxml::xml_node<>* root = doc.first_node("world");
+
+    // window information
+    char* width = root->first_node("window")->first_attribute("width")->value();
+    char* height = root->first_node("window")->first_attribute("height")->value();
+
+    Window window_info = Window(std::stof(width), std::stof(height));
+
+    // camera information
+    rapidxml::xml_node<>* camera = root->first_node("camera");
+
+    rapidxml::xml_node<>* position = camera->first_node("position");
+    Point position = Point(
+        std::stof(position->first_attribute("x")->value()),
+        std::stof(position->first_attribute("y")->value()),
+        std::stof(position->first_attribute("z")->value())
+    );
+
+    rapidxml::xml_node<>* lookAt = camera->first_node("lookAt");
+    Point lookAt = Point(
+        std::stof(lookAt->first_attribute("x")->value()),
+        std::stof(lookAt->first_attribute("y")->value()),
+        std::stof(lookAt->first_attribute("z")->value())
+    );
+
+    rapidxml::xml_node<>* up = camera->first_node("up");
+    Point up = Point(
+        std::stof(up->first_attribute("x")->value()),
+        std::stof(up->first_attribute("y")->value()),
+        std::stof(up->first_attribute("z")->value())
+    );
+
+    rapidxml::xml_node<>* projection = camera->first_node("projection");
+    int fov = std::stoi(projection->first_attribute("fov")->value());
+    float near = std::stof(projection->first_attribute("near")->value());
+    float far = std::stof(projection->first_attribute("far")->value());
+
+    Camera camera_info = Camera(position, lookAt, up, fov, near, far);
+
+    // models
+    std::vector<char*> models_info;
+    rapidxml::xml_node<>* models = root->first_node("group")->first_node("models");
+    for (rapidxml::xml_node<>* model = models->first_node("model"); model; model = model->next_sibling("model")) {
+        models_info.push_back(model->first_attribute("file")->value());
+    }
+
+    return Configuration(window_info, camera_info, models_info);
+}

lib/rapidxml-1.13/license.txt

@@ -0,0 +1,52 @@
+Use of this software is granted under one of the following two licenses,
+to be chosen freely by the user.
+
+1. Boost Software License - Version 1.0 - August 17th, 2003
+===============================================================================
+
+Copyright (c) 2006, 2007 Marcin Kalicinski
+
+Permission is hereby granted, free of charge, to any person or organization
+obtaining a copy of the software and accompanying documentation covered by
+this license (the "Software") to use, reproduce, display, distribute,
+execute, and transmit the Software, and to prepare derivative works of the
+Software, and to permit third-parties to whom the Software is furnished to
+do so, all subject to the following:
+
+The copyright notices in the Software and this entire statement, including
+the above license grant, this restriction and the following disclaimer,
+must be included in all copies of the Software, in whole or in part, and
+all derivative works of the Software, unless such copies or derivative
+works are solely in the form of machine-executable object code generated by
+a source language processor.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+
+2. The MIT License
+===============================================================================
+
+Copyright (c) 2006, 2007 Marcin Kalicinski
+
+Permission is hereby granted, free of charge, to any person obtaining a copy 
+of this software and associated documentation files (the "Software"), to deal 
+in the Software without restriction, including without limitation the rights 
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies 
+of the Software, and to permit persons to whom the Software is furnished to do so, 
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all 
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 
+IN THE SOFTWARE.