118 lines
4.5 KiB
C++
118 lines
4.5 KiB
C++
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/****************************************************************************
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* Copyright (C) 2009 Daniel Chappuis *
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****************************************************************************
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* This file is part of ReactPhysics3D. *
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* *
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* ReactPhysics3D is free software: you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation, either version 3 of the License, or *
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* (at your option) any later version. *
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* *
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* ReactPhysics3D is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with ReactPhysics3D. If not, see <http://www.gnu.org/licenses/>. *
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***************************************************************************/
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// Libraries
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#include "Simulation.h"
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#include "ReactDemo.h"
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#include <iostream>
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// Constructor of the class Simulation
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Simulation::Simulation() {
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simRunning = false;
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mouseButtonPressed = false;
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fps = 0.0;
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}
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// Destructor of the class Simulation
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Simulation::~Simulation() {
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}
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// Method to start the simulation
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void Simulation::start() {
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// Initialisation of the OpenGL settings for the scene
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scene.init();
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// Reshape the windows for the first time
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scene.reshape(WINWIDTH, WINHEIGHT);
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// Activation of the simulation
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simRunning = true;
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// Get the current time
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currentFrameTime = SDL_GetTicks();
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// Main loop of the simulation
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while(simRunning) {
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// Check if an SDL event occured and make the apropriate actions
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checkEvents();
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// Display the actual scene
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scene.display(context);
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// Compute the fps (framerate)
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computeFps();
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//std::cout << fps << std::endl;
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}
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}
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// This method checks if an events occur and call the apropriate method
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void Simulation::checkEvents() {
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SDL_Event event; // An SDL event
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// Zoom of the outside camera
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if (SDL_GetKeyState(NULL)[SDLK_UP]) {
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scene.getOutSideCamera().decreaseDistance(fps);
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}
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else if(SDL_GetKeyState(NULL)[SDLK_DOWN]) {
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scene.getOutSideCamera().increaseDistance(fps);
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}
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// Check in the stack of events
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while(SDL_PollEvent(&event)) {
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// Check an event
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switch(event.type) {
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// An QUIT event occur
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case SDL_QUIT: simRunning = false;
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break;
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// A keyboard key has been pushed
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case SDL_KEYDOWN: // The Esc key has been pushed then we end the simulation
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if (event.key.keysym.sym == SDLK_ESCAPE)
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simRunning = false;
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break;
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// The size of the windows changed then we reshape the windows
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case SDL_VIDEORESIZE: scene.reshape(event.resize.w, event.resize.h);
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break;
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// If the mouse moved
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case SDL_MOUSEMOTION: if (SDL_GetMouseState(NULL, NULL)&SDL_BUTTON(1)) {
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// Rotation of the outSideCamera
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// TODO : Problem here when we try to implement fps indepence (if we try to
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// replace 60 by the variable fps
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scene.getOutSideCamera().modifyHorizontalAngleRotation(event.motion.xrel, 30);
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scene.getOutSideCamera().modifyVerticalAngleRotation(event.motion.yrel, 30);
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}
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}
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}
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}
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// Compute the framerate (fps) of the application
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void Simulation::computeFps() {
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double lastFrameTime = currentFrameTime;
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// Get the current time
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currentFrameTime = SDL_GetTicks();
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// Compute the new framerate
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fps = 1000 / double(currentFrameTime - lastFrameTime);
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}
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