void OgreApplication::InitPlugins(void){
try {
/* Load plugin responsible for OpenGL render system */
Strings plugin_names;
plugin_names.push_back("RenderSystem_GL");
Strings::iterator iter = plugin_names.begin();
Strings::iterator iter_end = plugin_names.end();
for (; iter != iter_end; iter++){
Ogre::String& plugin_name = (*iter);
if (OGRE_DEBUG_MODE){
plugin_name.append("_d");
}
ogre_root_->loadPlugin(plugin_name);
}
}
catch (Ogre::Exception &e){
throw(OgreAppException(std::string("Ogre::Exception: ") + std::string(e.what())));
}
catch(std::exception &e){
throw(OgreAppException(std::string("std::Exception: ") + std::string(e.what())));
}
}
void OgreApplication::MainLoop(void){
try {
/* Main loop to keep the application going */
ogre_root_->clearEventTimes();
while(!ogre_window_->isClosed()){
ogre_window_->update(false);
ogre_window_->swapBuffers();
ogre_root_->renderOneFrame();
Ogre::WindowEventUtilities::messagePump();
}
}
catch (Ogre::Exception &e){
throw(OgreAppException(std::string("Ogre::Exception: ") + std::string(e.what())));
}
catch(std::exception &e){
throw(OgreAppException(std::string("std::Exception: ") + std::string(e.what())));
}
}
void OgreApplication::CreateParticleEntity(Ogre::String entity_name, Ogre::String object_name, Ogre::String material_name){
try {
/* Create one instance of the torus (one entity) */
/* The same object can have multiple instances or entities */
/* Retrieve scene manager and root scene node */
Ogre::SceneManager* scene_manager = ogre_root_->getSceneManager("MySceneManager");
Ogre::SceneNode* root_scene_node = scene_manager->getRootSceneNode();
/* Create entity */
Ogre::Entity* entity = scene_manager->createEntity(object_name);
/* Apply a material to the entity */
entity->setMaterialName(material_name);
particle_material_name_ = material_name;
/* Create a scene node for the entity */
/* The scene node keeps track of the entity's position */
Ogre::SceneNode* scene_node = root_scene_node->createChildSceneNode(entity_name);
scene_node->attachObject(entity);
/* Scale the entity */
scene_node->scale(0.5, 0.5, 0.5);
}
catch (Ogre::Exception &e){
throw(OgreAppException(std::string("Ogre::Exception: ") + std::string(e.what())));
}
catch(std::exception &e){
throw(OgreAppException(std::string("std::Exception: ") + std::string(e.what())));
}
}
void AsteroidGame::InitViewport(void){
try {
/* Retrieve scene manager and root scene node */
Ogre::SceneManager* scene_manager = ogre_root_->createSceneManager(Ogre::ST_GENERIC, "MySceneManager");
Ogre::SceneNode* root_scene_node = scene_manager->getRootSceneNode();
/* Create camera object */
camera = scene_manager->createCamera("MyCamera");
Ogre::SceneNode* camera_scene_node = root_scene_node->createChildSceneNode("MyCameraNode");
camera_scene_node->attachObject(camera);
camera->setNearClipDistance(camera_near_clip_distance_g);
camera->setFarClipDistance(camera_far_clip_distance_g);
camera->setPosition(camera_position_g);
camera->lookAt(camera_look_at_g);
//camera->setFixedYawAxis(true, camera_up_g);
/* Create second camera object */
camera_2 = scene_manager->createCamera("MyCamera_2");
Ogre::SceneNode* camera_scene_node_2 = root_scene_node->createChildSceneNode("MyCameraNode_2");
camera_scene_node_2->attachObject(camera_2);
camera_2->setNearClipDistance(camera_near_clip_distance_g);
camera_2->setFarClipDistance(camera_far_clip_distance_g);
camera_2->setPosition(camera_position_g);
camera_2->lookAt(camera_look_at_g);
//camera->setFixedYawAxis(true, camera_up_g);
/*Create viewport */
Ogre::Viewport *viewport = ogre_window_->addViewport(camera, viewport_z_order_g, viewport_left_g, viewport_top_g, viewport_width_g, viewport_height_g);
viewport->setAutoUpdated(true);
viewport->setBackgroundColour(viewport_background_color_g);
/* Set aspect ratio */
float ratio = float(viewport->getActualWidth()) / float(viewport->getActualHeight());
camera->setAspectRatio(ratio);
camera_2->setAspectRatio(ratio);
}
catch (Ogre::Exception &e){
throw(OgreAppException(std::string("Ogre::Exception: ") + std::string(e.what())));
}
catch(std::exception &e){
throw(OgreAppException(std::string("std::Exception: ") + std::string(e.what())));
}
}
void OgreApplication::InitRootNode(void){
try {
/* We need to have an Ogre root to be able to access all Ogre functions */
ogre_root_ = std::auto_ptr<Ogre::Root>(new Ogre::Root(config_filename_g, plugins_filename_g, log_filename_g));
//ogre_root_->showConfigDialog();
}
catch (Ogre::Exception &e){
throw(OgreAppException(std::string("Ogre::Exception: ") + std::string(e.what())));
}
catch(std::exception &e){
throw(OgreAppException(std::string("std::Exception: ") + std::string(e.what())));
}
}
void OgreApplication::InitEvents(void){
try {
/* Add this object as a FrameListener (see frameRenderingQueued event) */
ogre_root_->addFrameListener(this);
/* Add this object as a WindowEventListener to handle the window resize event */
Ogre::WindowEventUtilities::addWindowEventListener(ogre_window_, this);
}
catch (Ogre::Exception &e){
throw(OgreAppException(std::string("Ogre::Exception: ") + std::string(e.what())));
}
catch(std::exception &e){
throw(OgreAppException(std::string("std::Exception: ") + std::string(e.what())));
}
}
void OgreApplication::LoadMaterials(void){
try {
/* Load materials that can then be assigned to objects in the scene */
Ogre::String resource_group_name = "MyGame";
Ogre::ResourceGroupManager& resource_group_manager = Ogre::ResourceGroupManager::getSingleton();
resource_group_manager.createResourceGroup(resource_group_name);
bool is_recursive = false;
resource_group_manager.addResourceLocation(material_directory_g, "FileSystem", resource_group_name, is_recursive);
resource_group_manager.initialiseResourceGroup(resource_group_name);
resource_group_manager.loadResourceGroup(resource_group_name);
}
catch (Ogre::Exception &e){
throw(OgreAppException(std::string("Ogre::Exception: ") + std::string(e.what())));
}
catch(std::exception &e){
throw(OgreAppException(std::string("std::Exception: ") + std::string(e.what())));
}
}
void OgreApplication::InitRenderSystem(void){
try {
const Ogre::RenderSystemList& render_system_list = ogre_root_->getAvailableRenderers();
if (render_system_list.size() == 0)
{
throw(OgreAppException(std::string("OgreApp::Exception: Sorry, no rendersystem was found.")));
}
Ogre::RenderSystem *render_system = render_system_list.at(0);
ogre_root_->setRenderSystem(render_system);
}
catch (Ogre::Exception &e){
throw(OgreAppException(std::string("Ogre::Exception: ") + std::string(e.what())));
}
catch(std::exception &e){
throw(OgreAppException(std::string("std::Exception: ") + std::string(e.what())));
}
}
void OgreApplication::InitWindow(void){
try {
/* Create main window for the application */
bool create_window_automatically = false;
ogre_root_->initialise(create_window_automatically, window_title_g, custom_window_capacities_g);
Ogre::NameValuePairList params;
params["FSAA"] = "0";
params["vsync"] = "true";
ogre_window_ = ogre_root_->createRenderWindow(window_title_g, window_width_g, window_height_g, window_full_screen_g, ¶ms);
ogre_window_->setActive(true);
ogre_window_->setAutoUpdated(false);
}
catch (Ogre::Exception &e){
throw(OgreAppException(std::string("Ogre::Exception: ") + std::string(e.what())));
}
catch(std::exception &e){
throw(OgreAppException(std::string("std::Exception: ") + std::string(e.what())));
}
}
void OgreApplication::InitOIS(void){
/* Initialize the Object Oriented Input System (OIS) */
try {
/* Initialize input manager */
OIS::ParamList pl; // Parameter list passed to the input manager initialization
size_t windowHnd = 0;
std::ostringstream windowHndStr;
ogre_window_->getCustomAttribute("WINDOW", &windowHnd);
windowHndStr << windowHnd;
pl.insert(std::make_pair(std::string("WINDOW"), windowHndStr.str()));
pl.insert(std::make_pair(std::string("w32_mouse"),
std::string("DISCL_FOREGROUND" )));
pl.insert(std::make_pair(std::string("w32_mouse"),
std::string("DISCL_NONEXCLUSIVE")));
input_manager_ = OIS::InputManager::createInputSystem(pl);
/*size_t hWnd = 0;
ogre_window_->getCustomAttribute("WINDOW", &hWnd);
input_manager_ = OIS::InputManager::createInputSystem(hWnd);*/
/* Initialize keyboard and mouse */
keyboard_ = static_cast<OIS::Keyboard*>(input_manager_->createInputObject(OIS::OISKeyboard, false));
mouse_ = static_cast<OIS::Mouse*>(input_manager_->createInputObject(OIS::OISMouse, false));
unsigned int width, height, depth;
int top, left;
ogre_window_->getMetrics(width, height, depth, left, top);
const OIS::MouseState &ms = mouse_->getMouseState();
ms.width = width;
ms.height = height;
}
catch(std::exception &e){
throw(OgreAppException(std::string("std::Exception: ") + std::string(e.what())));
}
}
void OgreApplication::CreateWall(Ogre::String material_name){
try {
/* Create two rectangles */
/* Retrieve scene manager and root scene node */
Ogre::SceneManager* scene_manager = ogre_root_->getSceneManager("MySceneManager");
Ogre::SceneNode* root_scene_node = scene_manager->getRootSceneNode();
/* Create the 3D object */
Ogre::ManualObject* object = NULL;
Ogre::String object_name = "Wall";
object = scene_manager->createManualObject(object_name);
object->setDynamic(false);
/* Create triangle list for the object */
object->begin(material_name, Ogre::RenderOperation::OT_TRIANGLE_LIST);
/* Add vertices */
/* One side of the "wall" */
object->position(-1.0,-1.0,0.0);
object->normal(0.0, 0.0, -1.0);
object->tangent(-1.0, 0.0, 0.0);
object->textureCoord(1.0, 0.0);
object->position(-1.0,1.0,0.0);
object->normal(0.0, 0.0, -1.0);
object->tangent(-1.0, 0.0, 0.0);
object->textureCoord(1.0, 1.0);
object->position(1.0,1.0,0.0);
object->normal(0.0, 0.0, -1.0);
object->tangent(-1.0, 0.0, 0.0);
object->textureCoord(0.0, 1.0);
object->position(1.0,-1.0,0.0);
object->normal(0.0, 0.0, -1.0);
object->tangent(-1.0, 0.0, 0.0);
object->textureCoord(0.0, 0.0);
/* The other side of the "wall" */
object->position(-1.0,-1.0,0.0);
object->normal(0.0, 0.0, 1.0);
object->tangent(1.0, 0.0, 0.0);
object->textureCoord(0.0, 0.0);
object->position(-1.0,1.0,0.0);
object->normal(0.0, 0.0, 1.0);
object->tangent(1.0, 0.0, 0.0);
object->textureCoord(0.0, 1.0);
object->position(1.0,1.0,0.0);
object->normal(0.0, 0.0, 1.0);
object->tangent(1.0, 0.0, 0.0);
object->textureCoord(1.0, 1.0);
object->position(1.0,-1.0,0.0);
object->normal(0.0, 0.0, 1.0);
object->tangent(1.0, 0.0, 0.0);
object->textureCoord(1.0, 0.0);
/* Add triangles */
/* One side */
object->triangle(0, 1, 2);
object->triangle(0, 2, 3);
/* The other side */
object->triangle(4, 7, 6);
object->triangle(4, 6, 5);
/* We finished the object */
object->end();
/* Convert triangle list to a mesh */
Ogre::String mesh_name = "Wall";
object->convertToMesh(mesh_name);
/* Create one instance of the sphere (one entity) */
/* The same object can have multiple instances or entities */
Ogre::Entity* entity = scene_manager->createEntity(mesh_name);
/* Apply a material to the entity to give it color */
/* We already did that above, so we comment it out here */
/* entity->setMaterialName(material_name); */
/* But, this call is useful if we have multiple entities with different materials */
/* Create a scene node for the entity */
/* The scene node keeps track of the entity's position */
Ogre::SceneNode* scene_node = root_scene_node->createChildSceneNode(mesh_name);
scene_node->attachObject(entity);
/* Position and rotate the entity with the scene node */
//scene_node->rotate(Ogre::Vector3(0, 1, 0), Ogre::Degree(60));
//scene_node->rotate(Ogre::Vector3(1, 0, 0), Ogre::Degree(30));
//scene_node->rotate(Ogre::Vector3(1, 0, 0), Ogre::Degree(-90));
//scene_node->translate(0.0, 0.0, 0.0);
scene_node->scale(0.5, 0.5, 0.5);
}
catch (Ogre::Exception &e){
throw(OgreAppException(std::string("Ogre::Exception: ") + std::string(e.what())));
}
catch(std::exception &e){
throw(OgreAppException(std::string("std::Exception: ") + std::string(e.what())));
}
}
void OgreApplication::CreateParticleGeometry(Ogre::String object_name, int num_particles, float loop_radius, float circle_radius){
try {
/* Retrieve scene manager and root scene node */
Ogre::SceneManager* scene_manager = ogre_root_->getSceneManager("MySceneManager");
Ogre::SceneNode* root_scene_node = scene_manager->getRootSceneNode();
/* Create the 3D object */
Ogre::ManualObject* object = NULL;
object = scene_manager->createManualObject(object_name);
object->setDynamic(false);
/* Create point list for the object */
object->begin("", Ogre::RenderOperation::OT_POINT_LIST);
/* Initialize random numbers */
std::srand(std::time(0));
/* Create a set of points which will be the particles */
/* This is similar to drawing a torus: we will sample points on the surface of the torus */
float maxspray = 0.5; // This is how much we allow the points to wander around
float u, v, w, theta, phi, spray; // Work variables
for (int i = 0; i < num_particles; i++){
// Randomly select two numbers to define a point on the torus
u = ((double) rand() / (RAND_MAX));
v = ((double) rand() / (RAND_MAX));
float x,y,z;
x = ((double) rand() / (RAND_MAX))+0.5;
y = ((double) rand() / (RAND_MAX))-0.5;
z = ((double) rand() / (RAND_MAX))-0.5;
// Use u and v to define the point on the torus
theta = u * Ogre::Math::TWO_PI;
phi = v * Ogre::Math::TWO_PI;
Ogre::Vector3 center = Ogre::Vector3(loop_radius*cos(theta), loop_radius*sin(theta), 0.0);
Ogre::Vector3 normal = Ogre::Vector3(cos(theta)*cos(phi), sin(theta)*cos(phi), sin(phi));
object->position(0,0,0); // Position of the point
object->normal(2*x,y,z);
object->colour(Ogre::ColourValue(((float) i)/((float) num_particles), 0.0, 1.0 - (((float) i)/((float) num_particles))));
object->textureCoord(Ogre::Vector2(0.0, 0.0));
// Now sample a point on a sphere to define a direction for points to wander around
u = ((double) rand() / (RAND_MAX));
v = ((double) rand() / (RAND_MAX));
w = ((double) rand() / (RAND_MAX));
theta = u * Ogre::Math::TWO_PI;
phi = acos(2.0*v * -1.0);
spray = maxspray*pow((float) w, (float) (1.0/3.0)); // Cubic root
Ogre::Vector3 wander = Ogre::Vector3(spray*sin(theta)*sin(phi), spray*cos(theta)*sin(phi), cos(phi));
//object->normal(wander);
}
/* We finished the object */
object->end();
/* Convert triangle list to a mesh */
object->convertToMesh(object_name);
}
catch (Ogre::Exception &e){
throw(OgreAppException(std::string("Ogre::Exception: ") + std::string(e.what())));
}
catch(std::exception &e){
throw(OgreAppException(std::string("std::Exception: ") + std::string(e.what())));
}
}
