src/window.cpp

   1 // Plastic Engine
   2 // Copyright (C) 2008  Albert Brown
   3 //
   4 // This program is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // This program is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 // Window subsystem: establish a buffer to draw in, handle input
  18
  19 #include <stdexcept>
  20 #include <iostream>
  21 #include <string>
  22 #include "SDL.h"
  23
  24 #include "state.hpp"
  25 #include "window.hpp"
  26
  27
  28
  29 window_subsystem::window_subsystem()
  30 {
  31     // TODO: we're going to have to implement commandline arguments and
  32     // some sort of config interface before we can un-hardcode these values
  33     _screen = SDL_SetVideoMode(640, 480, 32, SDL_DOUBLEBUF | SDL_OPENGL);
  34
  35     if(!_screen)
  36     {
  37         // Something went wrong
  38         std::string msg = std::string("SDL failed to set video mode: ")
  39             + SDL_GetError();
  40         throw std::runtime_error(msg.c_str());
  41     }
  42
  43     std::cout << "window_subsystem initialized." << std::endl;
  44 }
  45
  46 window_subsystem::~window_subsystem()
  47 {
  48     // The way SDL is designed, we can't really close the window.
  49     // TODO: maybe it would be possible if we init the SDL video subsystem
  50     //   here (in this class).  This might allow us to close and restart
  51     //   it aswell, although this should not be neccesary (maybe on windows).
  52
  53     std::cout << "window_subsystem shut down." << std::endl;
  54 }
  55
  56 void window_subsystem::tick(state &s)
  57 {
  58     SDL_Event event;
  59     while(SDL_PollEvent(&event))
  60     {
  61         switch(event.type)
  62         {
  63         case SDL_KEYDOWN:
  64             if(event.key.keysym.sym == SDLK_ESCAPE)
  65             {
  66                 std::cout << "Escape" << std::endl;
  67                 s.running = false;
  68             }
  69             break;
  70         case SDL_QUIT:
  71             std::cout << "Close button" << std::endl;
  72             s.running = false;
  73             break;
  74         }
  75     }
  76 }