minrt/SDLstuff.cpp at master · wheresthecode/minrt · GitHub

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#include "SDLstuff.h"

SDLstuff::SDLstuff(RT_RayTracer* rayTracer_){
  this->rayTracer = rayTracer_;

  mainWindow = NULL;
  sdl_glContext = NULL;
}

SDLstuff::~SDLstuff(){
  if (sdl_glContext)
    SDL_GL_DeleteContext(sdl_glContext);
}

void SDLstuff::init(){
  if (!Engine::dedicated){
    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE) < 0) {
      cerr << "Failed initializing SDL Video: " << SDL_GetError() << endl;
      exit(1);
    }
  }

  // move the window starting position a bit away from the upper left corner
  const int totalOffsetX = 6;
  const int totalOffsetY = 28;

  if (!Engine::dedicated){
    cout << "Creating SDL window with " << Engine::screenWidthGL << "x" << Engine::screenHeightGL << endl;
    sprintf(title, "MinRT %s", MINRT_VERSION);
    mainWindow = SDL_CreateWindow(title, totalOffsetX, totalOffsetY, Engine::screenWidthGL, Engine::screenHeightGL, SDL_WINDOW_OPENGL);

    if (!mainWindow){
      cout << "SDLstuff::createMyWindow. No mainWindow: " << SDL_GetError() << endl;
      exit(1);
    }

    sdl_glContext = SDL_GL_CreateContext(mainWindow);
    if (!sdl_glContext){
      cout << "SDLstuff::createMyWindow. No mainWindow: " << SDL_GetError() << endl;
      exit(1);
    }
  }
}

void SDLstuff::checkEvents(){
  while (SDL_PollEvent(&event)){
    switch (event.type){
      case SDL_KEYDOWN:
        handleKeyPressEvent(&event.key.keysym);
        break;

      case SDL_KEYUP:
        handleKeyReleaseEvent(&event.key.keysym);
        break;

      case SDL_MOUSEMOTION:
        handleMouseMotionEvent(&event.motion);
        break;

      default:
        break;
    }
  }
}

void SDLstuff::handleMouseMotionEvent(SDL_MouseMotionEvent* mouseMotion){
  Engine::relativeMouseMotion = CVector2i(mouseMotion->xrel, mouseMotion->yrel);
}

void SDLstuff::handleKeyPressEvent(SDL_Keysym* keysym){
  SDL_Keycode key = keysym->sym;

  switch (key){
    case SDLK_ESCAPE:
      Engine::done = true;
      break;

    case SDLK_UP:
    case SDLK_w:
      Engine::upKey = true;
      break;

    case SDLK_DOWN:
    case SDLK_s:
      Engine::downKey = true;
      break;

    case SDLK_RIGHT:
    case SDLK_d:
      Engine::leftKey = true;
      break;

    case SDLK_LEFT:
    case SDLK_a:
      Engine::rightKey = true;
      break;

    case SDLK_SPACE:
      Engine::jumpKey = true;
      break;

    case SDLK_c:
      Engine::crouchKey = true;
      break;

    default:
      break;
  }
}

void SDLstuff::handleKeyReleaseEvent(SDL_Keysym* keysym){
  SDL_Keycode key = keysym->sym;

  switch (key) {
    case SDLK_UP:
    case SDLK_w:
      Engine::upKey = false;
      break;

    case SDLK_DOWN:
    case SDLK_s:
      Engine::downKey = false;
      break;

    case SDLK_RIGHT:
    case SDLK_d:
      Engine::leftKey = false;
      break;

    case SDLK_LEFT:
    case SDLK_a:
      Engine::rightKey = false;
      break;

    case SDLK_SPACE:
      Engine::jumpKey = false;
      break;

    case SDLK_c:
      Engine::crouchKey = false;
      break;

    default:
      break;
  }
}

void SDLstuff::grabKeyAndMouse(){
  SDL_SetRelativeMouseMode(SDL_TRUE);
}

void SDLstuff::ungrabKeyAndMouse(){
  SDL_SetRelativeMouseMode(SDL_FALSE);
}