game.cpp

   1 #include "game.h"
   2 #include "geometry.h"
   3 #include "luaenv.h"
   4 #include "timer.h"
   5 #include "player.h"
   6 #include "controle.h"
   7
   8 const int SCREEN_WIDTH = 640;
   9 const int SCREEN_HEIGHT = 480;
  10 const int SCREEN_BPP = 32;
  11 const int FRAMES_PER_SECOND = 60;
  12
  13 void Game::geraMapa() {
  14         const double alturaChao = 400;
  15         mapa = new Mapa(800, 600, player, gravityManager);
  16         mapa->novaLinha(0,alturaChao,mapa->xmax(),alturaChao);
  17         mapa->novaLinha(0,mapa->ymax(),mapa->xmax(),mapa->ymax());
  18         mapa->novaLinha(30,350,100,350);
  19         mapa->novaLinha(200,320,250,320);
  20         mapa->novaLinha(400,275,450,275);
  21         mapa->novaLinha(200,200,250,200);
  22         mapa->novaLinha(30,100,100,100);
  23 }
  24
  25 bool init_GL()
  26 {
  27     //Set clear color
  28     glClearColor( 1, 1, 1, 0 );
  29
  30     //Initialize modelview matrix
  31     glMatrixMode( GL_MODELVIEW );
  32     glLoadIdentity();
  33
  34     //Linhas
  35     glLineWidth(2.5);
  36     glEnable(GL_LINE_SMOOTH);
  37     glEnable(GL_BLEND);
  38     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
  39     glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
  40
  41     //If there was any errors
  42     if( glGetError() != GL_NO_ERROR )
  43     {
  44         return false;
  45     }
  46
  47     //If everything initialized
  48     return true;
  49 }
  50
  51 Game::Game()
  52 {
  53         gravityManager = new GravityManager;
  54
  55     //Initialize SDL
  56     if( SDL_Init( SDL_INIT_EVERYTHING ) < 0 )
  57     {
  58         //erro
  59     }
  60
  61     //Create Window
  62     if( SDL_SetVideoMode( SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_BPP, SDL_OPENGL ) == NULL )
  63     {
  64         //erro
  65     }
  66
  67     //Initialize OpenGL
  68     if( !init_GL() )
  69     {
  70         //erro
  71     }
  72
  73     //Set caption
  74     SDL_WM_SetCaption( "Prototipo Jogo", NULL );
  75 }
  76
  77 void Game::show() {
  78         glClear( GL_COLOR_BUFFER_BIT );
  79     double x, y;
  80
  81     if (player->getX() <= SCREEN_WIDTH/2)
  82         x = 0;
  83     else if (player->getX() >= mapa->xmax() - SCREEN_WIDTH/2)
  84         x = mapa->xmax() - SCREEN_WIDTH;
  85     else
  86         x = player->getX() - SCREEN_WIDTH/2;
  87
  88     if (player->getY() <= 2*SCREEN_HEIGHT/3)
  89         y = 0;
  90     else if (player->getY() >= mapa->ymax() - SCREEN_HEIGHT/3)
  91         y = mapa->ymax() - SCREEN_HEIGHT;
  92     else
  93         y = player->getY() - 2*SCREEN_HEIGHT/3;
  94
  95         player->desenha();
  96         mapa->desenha();
  97
  98     glMatrixMode( GL_PROJECTION );
  99     glLoadIdentity();
 100     glOrtho( x, x+SCREEN_WIDTH, y+SCREEN_HEIGHT, y, -1, 1 );
 101         SDL_GL_SwapBuffers();
 102 }
 103
 104 void Game::mainLoop() {
 105         luaRun luaEnv;
 106         luaEnv.registerScripts();
 107         luaEnv.loadScripts();
 108         Timer fps;
 109
 110         player = new Player(this);
 111         geraMapa();
 112         Controle c(*player);
 113         bool quit = false;
 114         while (!quit) {
 115                 fps.start();
 116                 //player events
 117                 c.eventLoop();
 118
 119                 //colision, gravity
 120                 gravityManager->update();
 121
 122                 //movements
 123                 player->move();
 124                 quit = c.getQuit();
 125                 show();
 126                 if (fps.get_ticks() < 1000 / FRAMES_PER_SECOND ) {
 127                         SDL_Delay( ( 1000 / FRAMES_PER_SECOND ) - fps.get_ticks() );
 128                 }
 129         }
 130 }