source: orxonox.OLD/orxonox/branches/physics/src/subprojects/particles/framework.cc @ 4304

/* 
   orxonox - the future of 3D-vertical-scrollers

   Copyright (C) 2004 orx

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   ### File Specific:
   main-programmer: Benjamin Grauer
   co-programmer: ...
*/

#include "framework.h"

#include "physics_engine.h"
#include "particle_engine.h"

#include "p_node.h"
#include "null_parent.h"
#include "state.h"
#include "debug.h"
#include "graphics_engine.h"
#include "light.h"
#include "resource_manager.h"
#include "camera.h"

int verbose;

bool Framework::mainLoop()
{
  while(true)
    {
      // keyhandler returns false if sdl gets quit by some event
      if (!this->keyHandler())
        return false;

      // tick the scene
      float dt = this->tick();

      // Draw the scene
      this->draw(dt);
    }
}


bool Framework::draw(float dt)
{
  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
  glLoadIdentity(); // Reset the view
  
  ParticleEngine::getInstance()->draw(dt);

  camera->apply();
  
  SDL_GL_SwapBuffers(); // Swap the buffers
}


float Framework::tick()
{
  currFrame = SDL_GetTicks();
  float dt = (float)(currFrame - lastFrame) / 1000.0;
  lastFrame = currFrame;

  ParticleEngine::getInstance()->tick(dt);

  NullParent::getInstance()->update(dt);
  return dt;
}


bool Framework::keyHandler()
{
  // This is the main loop for the entire program and it will run until done==TRUE
  {
    // And poll for events
    SDL_Event event;
    SDL_PollEvent(&event) ;
    {
      switch (event.type) {
      case SDL_MOUSEMOTION:
        PRINTF(4)("Mouse motion about %d,%d Pixels to (%d,%d).\n", 
                  event.motion.xrel, event.motion.yrel,
                  event.motion.x, event.motion.y);
        // TRACKBALL
        if (mouse1Down)
          {
            /*
              int mX = event.button.x;
              int mY = event.button.y;
              int wH = GraphicsEngine::getInstance()->getResolutionY();
              int wW = GraphicsEngine::getInstance()->getResolutionX();
              Vector tmpV (mX, mY, sqrt ( (float) abs(wH * wH/4 - (wW/2-mX) * (wW/2-mX) - (wH/2-mY) * (wH/2-mY)) ));
              //            PRINTF(0)("tmpV: %f, %f, %f\n", tmpV.x, tmpV.y, tmpV.z);
              p2 = tmpV-M;
              p2.y = -p2.y;
              rotAxis = p1.cross(p2);
              //  PRINTF(0)("rotAxis: %f, %f, %f\n", rotAxis.x, rotAxis.y, rotAxis.z);
              
              // in case that there is no rotation-axis defined
              if (rotAxis.x != 0 || rotAxis.y != 0 || rotAxis.z != 0)
              {
              rotAxis.normalize();
              //                PRINTF(0)("rotAxis: %f, %f, %f\n", rotAxis.x, rotAxis.y, rotAxis.z, rotAngle);
              
              rotAngle = angleRad (p1, p2);
              rotQ = Quaternion (rotAngle, rotAxis);
              rotQ = rotQ * rotQlast;
              rotQ.matrix (matQ);
              //        dir = rotQ.apply(dir);
              //      dir.normalize();
              //        PRINTF(0)("rotAxis: %f, %f, %f, %f\n", dir.x, dir.y, dir.z, rotAngle);
              }
              rotQlast = rotQ;
              p1 = p2;
            */
            

          }
        break;
      case SDL_MOUSEBUTTONDOWN:
        if (event.button.button == 4)
          {
            PRINTF(4)("MouseWheel up\n");
            //      zoomTo *= .5;
          }
        else if (event.button.button == 5)
          {
            PRINTF(4)("MouseWheel down\n");
            //      zoomTo *= 2.0;
          }
        else if (event.button.button == 1)
          {
            mouse1Down = true;
            movement[0] = event.button.x;
            movement[1] = event.button.y;
            movement[2] = 0;
            movement[3] = 0;
            printf("test %d %d\n", movement[0], movement[1]);
            /*
              int mX = event.button.x;
              int mY = event.button.y;
              int wH = GraphicsEngine::getInstance()->getResolutionY();
              int wW = GraphicsEngine::getInstance()->getResolutionX();
              Vector tmpV (mX, mY, sqrt ( (float) abs(wH * wH/4 - (wW/2-mX) * (wW/2-mX) - (wH/2-mY) * (wH/2-mY)) ));
              p1 = tmpV-M;
              p1.y = -p1.y;
            */
          }
        else
          {
            PRINTF(0)("MouseButton %d pressed at (%d,%d).\n",
                   event.button.button, event.button.x, event.button.y);
          }
            
        break;
      case SDL_MOUSEBUTTONUP:
        if (event.button.button == 4);
        else if (event.button.button == 5);
        else if (event.button.button == 1)
          mouse1Down =false;
        else 
            {
              PRINTF(4)("MouseButton %d released at (%d,%d).\n",
                        event.button.button, event.button.x, event.button.y);
            }
        break;

      case SDL_VIDEORESIZE:
        GraphicsEngine::getInstance()->resolutionChanged(&event.resize);
        break;
      case SDL_KEYDOWN:
        switch (event.key.keysym.sym)
          {
          case SDLK_x:
            
            break;
          case SDLK_c:

            break;
          case SDLK_i:
            ParticleEngine::getInstance()->debug();
            break;
          case SDLK_a:
            //zoomTo /=2;
            break;
          case SDLK_z:
            //zoomTo *=2;
            break;
          }
        break;
            
        // If a quit event was recieved
      case SDL_QUIT:
        // then we're done and we'll end this program
        return false;
        break;
      default:
        break;
      }

    }

    // Get the state of the keyboard keys
    keys = SDL_GetKeyState(NULL);

    // and check if ESCAPE has been pressed. If so then quit
    if(keys[SDLK_ESCAPE]) return false;
  }
  return true;
}


Framework::Framework()
{
  this->lastFrame = 0;
  // Create a new OpenGL window with the title "Cone3D Basecode" at
  // 640x480x32, fullscreen and check for errors along the way
  GraphicsEngine::getInstance();

  LightManager::getInstance();
  glEnable(GL_TEXTURE_2D);

  // Build the font from a TGA image font.tga in the data directory
  // Hide the mouse cursor
  SDL_ShowCursor(2);
  mouse1Down = false;

  ResourceManager::getInstance()->setDataDir(DATA_DIRECTORY);
 
  // Creating a Test Particle System
  ParticleSystem* system = new ParticleSystem(100000, PARTICLE_SPRITE);
  system->setLifeSpan(5);
  system->setConserve(.99);
  system->setRadius(4, 3, 1, 2);
  system->setColor(.5,0,0,.5, 1,1,0,1, 0,0,0,0);

  // Creating a Test Particle Emitter
  ParticleEmitter* emitter = new ParticleEmitter(Vector(0 , 1, 0), M_PI_4, 20, .1);
  emitter->setType(EMITTER_DOT  );
  emitter->setSize(0);
  emitter->setRelCoor(Vector(0,0,0));
  
  // Add the Flow from the Emitter into the System
  ParticleEngine::getInstance()->addConnection(emitter, system);

  camera = new Camera();

  State::getInstance()->setCamera(camera, emitter);

  camera->setAbsCoor(Vector(10, 10, 0));

}

Framework::~Framework()
{
  delete GraphicsEngine::getInstance();

}

int main(int argc, char *argv[])
{
  verbose = 3;
  Framework* framework = new Framework();
  framework->mainLoop();

  delete framework;
  // Kill the GL & SDL screens
  // And quit
  return 0;
}