fixed much stuff with bad usage of constructor mixed with virtual functions in gl stuff. added model loading with assimp.

data/mesh/small_atomic_bomb.scad

@@ -0,0 +1,45 @@
+$fn = 12;
+
+offset = 1.0;
+
+r_inner = 0.2;
+r_outer = 0.5;
+
+rotate([0,0,180]) {
+
+hull() {
+    // hull around the small base
+    translate([offset, 0, 0]) sphere(r_inner);
+
+    // and the thick head
+    sphere(r_outer);
+}
+
+pipe_len=0.3;
+translate([offset, 0, 0]) {
+    rotate([0,90,0]) cylinder(r=r_inner, pipe_len);
+}
+
+// fins
+w = 0.5;
+h = 0.8 * r_outer;
+
+difference() {
+    // fin
+    for (i=[0:4]) {
+        rotate([i*90,0,0]) {
+            translate([offset-w/2+pipe_len,0,-h/2]) {
+                hull() {
+                    cube([w,0.05,0.01], center=true);
+                    rotate([0,-5,0]) {
+                        cube([w-0.2,0.05,h+0.15], center=true);
+                    }
+                }
+            }
+        }
+    }
+
+    // cutout part near end of pipe
+    //translate([pipe_len+offset,0,0]) sphere(0.25);
+}
+}

game/CMakeLists.txt

@@ -3,6 +3,7 @@ set(CMAKE_INCLUDE_CURRENT_DIRS ON)
 find_package(OpenGL REQUIRED)
 find_package(epoxy REQUIRED)
 find_package(X11 REQUIRED)
+find_package(assimp REQUIRED)
 
 set(GAME_SRC
     main.cpp
@@ -34,7 +35,9 @@ include_directories(${CMAKE_CURRENT_SOURCE_DIR})
 include_directories(${OPENGL_INCLUDE_DIR})
 include_directories(${CMAKE_SOURCE_DIR}/libs/glm/)
 include_directories(${CMAKE_SOURCE_DIR}/libs/asio/asio/include/)
+include_directories(${assimp_INCLUDE_DIRS})
 
 add_executable(game ${GAME_SRC})
 setup_target(game)
-target_link_libraries(game X11 epoxy pthread)
+
+target_link_libraries(game X11 epoxy pthread ${assimp_LIBRARIES} assimp)

game/game_window.hpp

@@ -20,16 +20,20 @@
 class GameWindow : public endofthejedi::GLWindow {
   private:
     Game* m_game;
-    //endofthejedi::RendererPolygon2d m_renderer;
+    endofthejedi::RendererPolygon2d m_renderer;
     //endofthejedi::RendererPolygon3d m_renderer;
-    endofthejedi::RendererRayTracer m_renderer;
+    //endofthejedi::RendererRayTracer m_renderer;
 
   protected:
     void init() override {
+        std::cout<<"init" << std::endl;
+
         glClearColor(0.5f, 0.6f, 0.7f, 1.0f);
         resize();
 
         glEnable(GL_DEPTH_TEST);
+
+        m_renderer.setup();
     }
 
     void render(double time) override {

game/glclasses.cpp

@@ -3,24 +3,30 @@
 #include <iostream>
 #include <vector>
 
-endofthejedi::VAO::VAO() { glGenVertexArrays(1, &m_name); }
+namespace endofthejedi {
+    VAO::VAO() { glGenVertexArrays(1, &m_name); }
 
-endofthejedi::VAO::~VAO() { glDeleteVertexArrays(1, &m_name); }
+    VAO::~VAO() { glDeleteVertexArrays(1, &m_name); }
 
-void endofthejedi::VAO::bind() { glBindVertexArray(m_name); }
+    void VAO::bind() { glBindVertexArray(m_name); }
 
-void endofthejedi::VAO::fill(GLuint index, GLint size, GLenum type,
+    void VAO::fill(GLuint index, GLint size, GLenum type,
             GLboolean normalized, GLsizei stride,
-                             const GLvoid *pointer) {
+            const GLvoid *pointer)
+    {
+        (void) type;
+
         glEnableVertexAttribArray(index);
         glVertexAttribPointer(index, size, GL_FLOAT, normalized, stride, pointer);
     }
 
-endofthejedi::Shader::Shader() { m_program = glCreateProgram(); }
+    Shader::Shader() : m_program(0) { }
 
-endofthejedi::Shader::~Shader() {}
+    Shader::~Shader() {}
 
-bool endofthejedi::Shader::check() {
+    void Shader::init() { m_program = glCreateProgram(); }
+
+    bool Shader::check() {
         GLint len = 0;
         GLint result = 0;
 
@@ -30,15 +36,14 @@ bool endofthejedi::Shader::check() {
             char *error = (char *)malloc(len);
             glGetProgramInfoLog(m_program, len, NULL, error);
             std::string str(error);
-        std::cout << str << "\n";
+            std::cout << str << std::endl;
         }
-    std::cout << "checked program"
-              << "\n";
+        std::cout << "checked program" << std::endl;
 
         return (bool)result;
     }
 
-bool endofthejedi::Shader::checkShader(GLuint shader) {
+    bool Shader::checkShader(GLuint shader) {
         GLint len = 0;
         GLint result = 0;
 
@@ -48,19 +53,25 @@ bool endofthejedi::Shader::checkShader(GLuint shader) {
             char *error = (char *)malloc(len+1);
             glGetShaderInfoLog(shader, 0, &len, error);
             std::string str(error, error + len);
-        std::cout << str << "\n";
+            std::cout << str << std::endl;
         }
-    std::cout << "checked shader"
-              << "\n";
+
+        std::cout << "checked shader" << std::endl;
 
         return (bool)result;
     }
 
-void endofthejedi::Shader::bind() { glUseProgram(m_program); }
+    void Shader::bind() { glUseProgram(m_program); }
 
-void endofthejedi::Shader::unbind() { glUseProgram(0); }
+    void Shader::unbind() { glUseProgram(0); }
+
+    void Shader::load(const std::string &path, GLenum shadertype) {
+        if (m_program == 0) {
+            std::cout<<"[shader] error: shader program is invalid (0)!" << std::endl;
+            exit(-1);
+            return;
+        }
 
-void endofthejedi::Shader::load(std::string path, GLenum shadertype) {
         GLuint cheddar = glCreateShader(shadertype);
         const char *cheddardata = path.c_str();
         glShaderSource(cheddar, 1, &cheddardata, NULL);
@@ -72,6 +83,7 @@ void endofthejedi::Shader::load(std::string path, GLenum shadertype) {
         glDeleteShader(cheddar);
     }
 
-GLuint endofthejedi::Shader::location(std::string name) {
+    GLuint Shader::location(const std::string &name) {
         return glGetUniformLocation(m_program, name.c_str());
     }
+}

game/glclasses.hpp

@@ -43,6 +43,7 @@ class VAO {
 class Shader {
   private:
     GLuint m_program;
+
     bool check();
     bool checkShader(GLuint shader);
 
@@ -50,10 +51,12 @@ class Shader {
   public:
     Shader();
     ~Shader();
+    void init(); // call to init when opengl context exists
+
     void bind();
     void unbind();
-    void load(std::string data, GLenum shadertype);
-    GLuint location(std::string name);
+    void load(const std::string &data, GLenum shadertype);
+    GLuint location(const std::string &name);
 };
 }
 

game/main.cpp

@@ -71,6 +71,7 @@ int main(int argc, char *argv[]) {
 
     GameWindow window(500, 500, &game);
     window.set_maxfps(60.0);
+    window.open();
 
     while(window.running()){
         window.poll();

game/opengl.cpp

@@ -19,8 +19,14 @@ timespec diff(timespec start, timespec end) {
     return result;
 }
 
-endofthejedi::GLWindow::GLWindow(unsigned int width, unsigned int height)
-    : m_width(width), m_height(height) {
+namespace endofthejedi {
+
+    GLWindow::GLWindow(unsigned int width, unsigned int height) : m_width(width), m_height(height)
+    {
+    }
+
+    void GLWindow::open()
+    {
         m_display = XOpenDisplay(NULL);
 
         if (m_display == NULL) {
@@ -42,7 +48,7 @@ endofthejedi::GLWindow::GLWindow(unsigned int width, unsigned int height)
         m_swa.event_mask = ExposureMask | KeyPressMask;
 
         m_window = XCreateWindow(
-        m_display, m_rootwnd, 0, 0, width, height, 0, m_visualinfo->depth,
+            m_display, m_rootwnd, 0, 0, m_width, m_height, 0, m_visualinfo->depth,
             InputOutput, m_visualinfo->visual, CWColormap | CWEventMask, &m_swa);
 
         m_atomWmDeleteWindow = XInternAtom(m_display, "WM_DELETE_WINDOW", False);
@@ -62,13 +68,15 @@ endofthejedi::GLWindow::GLWindow(unsigned int width, unsigned int height)
         std::cout << "GLSL Version: " << glGetString(GL_SHADING_LANGUAGE_VERSION)
                   << "\n";
 
+        m_running = true;
+
         init();
 
         XClearWindow(m_display, m_window);
         XMapRaised(m_display, m_window);
     }
 
-endofthejedi::GLWindow::~GLWindow() {
+    GLWindow::~GLWindow() {
         glXMakeCurrent(m_display, None, NULL);
         glXDestroyContext(m_display, m_glcontext);
         XFree(m_visualinfo);
@@ -76,7 +84,7 @@ endofthejedi::GLWindow::~GLWindow() {
         XCloseDisplay(m_display);
     }
 
-void endofthejedi::GLWindow::handleevents() {
+    void GLWindow::handleevents() {
         if (XPending(m_display) > 0) {
             XEvent xev;
             XNextEvent(m_display, &xev);
@@ -84,7 +92,7 @@ void endofthejedi::GLWindow::handleevents() {
         }
     }
 
-void endofthejedi::GLWindow::handle(XEvent event) {
+    void GLWindow::handle(XEvent event) {
         if (event.type == Expose) {
             XWindowAttributes attribs;
             XGetWindowAttributes(m_display, m_window, &attribs);
@@ -100,9 +108,9 @@ void endofthejedi::GLWindow::handle(XEvent event) {
         }
     }
 
-void endofthejedi::GLWindow::swap() { glXSwapBuffers(m_display, m_window); }
+    void GLWindow::swap() { glXSwapBuffers(m_display, m_window); }
 
-void endofthejedi::GLWindow::poll() {
+    void GLWindow::poll() {
 
         clock_gettime(CLOCK_MONOTONIC_RAW, &prev);
         clock_gettime(CLOCK_MONOTONIC_RAW, &current);
@@ -128,8 +136,9 @@ void endofthejedi::GLWindow::poll() {
         }
     }
 
-void endofthejedi::GLWindow::stop() { m_running = false; }
-bool endofthejedi::GLWindow::running() { return m_running; }
-void endofthejedi::GLWindow::init() { m_running = true; }
-void endofthejedi::GLWindow::render(double time) { UNUSED(time) }
-void endofthejedi::GLWindow::resize() {}
+    void GLWindow::stop() { m_running = false; }
+    bool GLWindow::running() { return m_running; }
+    void GLWindow::init() { }
+    void GLWindow::render(double time) { UNUSED(time) }
+    void GLWindow::resize() {}
+}

game/opengl.hpp

@@ -67,10 +67,14 @@ namespace endofthejedi {
             virtual void handleevents();
 
         public:
-            //initializes the X Window & creates an OpenGL context
+            // create the class. call open() afterwards
             GLWindow(unsigned int width, unsigned int height);
+
             ~GLWindow();
 
+            //initializes the X Window & creates an OpenGL context
+            void open();
+
             //mainloop does event handling & calls render/swap
             void poll();
             void swap();

game/renderer_polygon_2d/renderer_polygon_2d.cpp

@@ -1,6 +1,15 @@
 #include "renderer_polygon_2d.hpp"
 
 namespace endofthejedi {
+    void RendererPolygon2d::setup()
+    {
+        // (dark grey) bg
+        float r = 0.1;
+        float g = 0.1;
+        float b = 0.1;
+        glClearColor(r, g, b, 1.0);
+    }
+
     void RendererPolygon2d::drawCircle(float x, float y, float radius,
                                                   float r, float g, float b,
                                                   int numSides) {

game/renderer_polygon_2d/renderer_polygon_2d.hpp

@@ -15,7 +15,7 @@
 
 namespace endofthejedi {
 
-    class RendererPolygon2d : Renderer {
+    class RendererPolygon2d : public Renderer {
         private:
             void drawCircle(float x, float y, float radius, float r, float g,
                     float b, int numSides = 12);
@@ -27,7 +27,9 @@ namespace endofthejedi {
             void drawExplosion(const game::Explosion *explosion);
 
         protected:
+
         public:
+            void setup() override;
             void render(const game::State *state) override;
     };
 

game/renderer_polygon_3d/polygon_model.hpp

@@ -0,0 +1,116 @@
+#pragma once
+
+#include <string>
+#include <iostream>
+
+#include <assimp/Importer.hpp>      // C++ importer interface
+#include <assimp/scene.h>           // Output data structure
+#include <assimp/postprocess.h>     // Post processing flags
+
+#include <epoxy/gl.h>
+#include <epoxy/glx.h>
+
+class PolygonModel {
+    public:
+        PolygonModel(const std::string &filename) : m_filename(filename)
+        {
+            if (!import()) {
+                m_loaded = false;
+
+            } else {
+                m_loaded = true;
+            }
+        }
+
+        bool import()
+        {
+            // Create an instance of the Importer class
+            Assimp::Importer importer;
+            // And have it read the given file with some example postprocessing
+            // Usually - if speed is not the most important aspect for you - you'll
+            // propably to request more postprocessing than we do in this example.
+            const aiScene* scene = importer.ReadFile(m_filename,
+                    aiProcess_CalcTangentSpace       |
+                    aiProcess_Triangulate            |
+                    aiProcess_JoinIdenticalVertices  |
+                    aiProcess_SortByPType);
+
+            // If the import failed, report it
+            if (!scene) {
+                std::cout<<"[polygonmodel] loading file "
+                    << m_filename << " failed with: "
+                    << importer.GetErrorString() << std::endl;
+
+                return false;
+            }
+
+            // Now we can access the file's contents.
+            copyVertices(scene);
+
+            // We're done. Everything will be cleaned up by the importer destructor
+            return true;
+        }
+
+    private:
+        bool copyVertices(const aiScene *scene)
+        {
+            if (scene->mMeshes == 0) {
+                std::cout << "[polygonmodel : no meshes loaded for " << m_filename << std::endl;
+                return false;
+            }
+
+            aiNode *node = scene->mRootNode;
+            const aiMesh* mesh = scene->mMeshes[node->mMeshes[0]];
+
+            // 3 vertices per face, 3 floats per vertex
+            m_numVertices = mesh->mNumFaces*3;
+
+            m_data_position.reserve(m_numVertices);
+            m_data_normal.reserve(m_numVertices);
+
+            size_t t, i;
+            for (t=0; t<mesh->mNumFaces; ++t) {
+                const aiFace* face = &mesh->mFaces[t];
+                if (face->mNumIndices != 3) {
+                    std::cout << "[polygonmodel] need triangles, got something different with: "
+                        << face->mNumIndices  << " vertices" << std::endl;
+
+                    return false;
+                }
+
+                for (i=0; i<face->mNumIndices; i++) {
+                    const size_t index = face->mIndices[i];
+                    m_data_position.push_back(mesh->mVertices[index].x);
+                    m_data_position.push_back(mesh->mVertices[index].y);
+                    m_data_position.push_back(mesh->mVertices[index].z);
+
+                    m_data_normal.push_back(mesh->mNormals[index].x);
+                    m_data_normal.push_back(mesh->mNormals[index].y);
+                    m_data_normal.push_back(mesh->mNormals[index].z);
+                }
+            }
+
+            size_t totalBytes = 3*m_numVertices*sizeof(float);
+            std::cout<<"[polygonmodel] loaded " << m_numVertices << " vertices ("
+                << totalBytes << " bytes)" << std::endl;
+
+            return true;
+        }
+
+        const std::string &filename() const { return m_filename; }
+        bool               ready()    const { return m_loaded; }
+
+    private:
+        std::string m_filename;
+        bool        m_loaded;
+
+        size_t      m_numVertices;
+
+        // both will hold 3 * numVertices floats
+        std::vector<float> m_data_position;
+        std::vector<float> m_data_normal;
+
+        GLuint      m_vbo_id_position;
+        GLuint      m_vbo_id_normal;
+};
+

game/renderer_polygon_3d/renderer_polygon_3d.cpp

@@ -2,16 +2,21 @@
 
 #include <iostream>
 
+#include "polygon_model.hpp"
+
 namespace endofthejedi {
     void RendererPolygon3d::setup()
     {
         std::cout<<"setup 3d" << std::endl;
+
+        PolygonModel atomicBomb("../data/mesh/small_atomic_bomb.stl");
+        exit(-1);
     }
 
     void RendererPolygon3d::render(const game::State *state)
     {
         (void) state;
 
-        //std::cout<<"render 3d" << std::endl;
+        std::cout<<"render 3d" << std::endl;
     }
 }

game/renderer_polygon_3d/renderer_polygon_3d.hpp

@@ -12,14 +12,18 @@
 #include "state/ship.hpp"
 #include "state/explosion.hpp"
 
+class PolygonModel;
+
 namespace endofthejedi {
 
-    class RendererPolygon3d : Renderer {
+    class RendererPolygon3d : public Renderer {
         private:
         protected:
         public:
             void setup();
             void render(const game::State *state) override;
-    };
 
+        private:
+            std::vector<PolygonModel*> m_models;
+    };
 }

game/renderer_ray_tracer/renderer_ray_tracer.cpp

@@ -16,7 +16,13 @@ static const char *fss =
 
 
 namespace endofthejedi {
-    RendererRayTracer::RendererRayTracer() {
+    RendererRayTracer::RendererRayTracer()
+    {
+    }
+
+    void RendererRayTracer::setup()
+    {
+        m_shader.init();
         m_shader.load(vss, GL_VERTEX_SHADER);
         m_shader.load(fss, GL_FRAGMENT_SHADER);
     }

game/renderer_ray_tracer/renderer_ray_tracer.hpp

@@ -11,12 +11,14 @@
 
 namespace endofthejedi {
 
-    class RendererRayTracer: Renderer {
+    class RendererRayTracer : public Renderer {
         private:
             Shader m_shader;
         protected:
         public:
             RendererRayTracer();
+
+            void setup() override;
             void render(const game::State *state) override;
     };
 

game/state/commands.cpp

@@ -13,7 +13,9 @@ namespace game {
         // TODO: idea
         // shoot multiple rockets at once or from different positions after
         // level up / upgrade ...
-        Missile *missile = new Missile(player, player->ship->position, util::deg2rad(m_angle), player->speed);
+
+        // angles are supplied in degrees and are CCW
+        Missile *missile = new Missile(player, player->ship->position, -util::deg2rad(m_angle), player->speed);
 
         Trace *trace = new Trace(missile);
         missile->trace = trace;