reactphysics3d/examples/collisionshapes/CollisionShapes.cpp

153 lines
5.0 KiB
C++

/********************************************************************************
* ReactPhysics3D physics library, http://code.google.com/p/reactphysics3d/ *
* Copyright (c) 2010-2013 Daniel Chappuis *
*********************************************************************************
* *
* This software is provided 'as-is', without any express or implied warranty. *
* In no event will the authors be held liable for any damages arising from the *
* use of this software. *
* *
* Permission is granted to anyone to use this software for any purpose, *
* including commercial applications, and to alter it and redistribute it *
* freely, subject to the following restrictions: *
* *
* 1. The origin of this software must not be misrepresented; you must not claim *
* that you wrote the original software. If you use this software in a *
* product, an acknowledgment in the product documentation would be *
* appreciated but is not required. *
* *
* 2. Altered source versions must be plainly marked as such, and must not be *
* misrepresented as being the original software. *
* *
* 3. This notice may not be removed or altered from any source distribution. *
* *
********************************************************************************/
// Libraries
#include "Scene.h"
#include "../common/Viewer.h"
// Declarations
void simulate();
void render();
void update();
void mouseButton(GLFWwindow* window, int button, int action, int mods);
void mouseMotion(GLFWwindow* window, double x, double y);
void keyboard(GLFWwindow* window, int key, int scancode, int action, int mods);
void scroll(GLFWwindow* window, double xAxis, double yAxis);
void init();
// Namespaces
using namespace openglframework;
// Global variables
Viewer* viewer;
Scene* scene;
// Main function
int main(int argc, char** argv) {
// Create and initialize the Viewer
viewer = new Viewer();
Vector2 windowsSize = Vector2(800, 600);
Vector2 windowsPosition = Vector2(100, 100);
viewer->init(argc, argv, "ReactPhysics3D Examples - Collision Shapes",
windowsSize, windowsPosition, true);
// If the shaders and meshes folders are not specified as an argument
if (argc < 3) {
std::cerr << "Error : You need to specify the shaders folder as the first argument"
<< " and the meshes folder as the second argument" << std::endl;
return 1;
}
// Get the path of the shaders folder
std::string shaderFolderPath(argv[1]);
std::string meshFolderPath(argv[2]);
// Register callback methods
viewer->registerUpdateFunction(update);
viewer->registerKeyboardCallback(keyboard);
viewer->registerMouseButtonCallback(mouseButton);
viewer->registerMouseCursorCallback(mouseMotion);
viewer->registerScrollingCallback(scroll);
// Create the scene
scene = new Scene(viewer, shaderFolderPath, meshFolderPath);
init();
viewer->startMainLoop();
delete viewer;
delete scene;
return 0;
}
// Update function that is called each frame
void update() {
// Take a simulation step
simulate();
// Render
render();
}
// Simulate function
void simulate() {
// Physics simulation
scene->simulate();
viewer->computeFPS();
}
// Initialization
void init() {
// Define the background color (black)
glClearColor(0.0, 0.0, 0.0, 1.0);
}
// Callback method to receive keyboard events
void keyboard(GLFWwindow* window, int key, int scancode, int action, int mods) {
if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS) {
glfwSetWindowShouldClose(window, GL_TRUE);
}
else if (key == GLFW_KEY_SPACE && action == GLFW_PRESS) {
scene->pauseContinueSimulation();
}
}
// Callback method to receive scrolling events
void scroll(GLFWwindow* window, double xAxis, double yAxis) {
viewer->scrollingEvent(static_cast<float>(yAxis));
}
// Called when a mouse button event occurs
void mouseButton(GLFWwindow* window, int button, int action, int mods) {
viewer->mouseButtonEvent(button, action);
}
// Called when a mouse motion event occurs
void mouseMotion(GLFWwindow* window, double x, double y) {
viewer->mouseMotionEvent(x, y);
}
// Display the scene
void render() {
// Render the scene
scene->render();
// Display the FPS
viewer->displayGUI();
// Check the OpenGL errors
Viewer::checkOpenGLErrors();
}