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(30,350,100,350);
  18         mapa->novaLinha(200,320,250,320);
  19         mapa->novaLinha(400,275,450,275);
  20         mapa->novaLinha(200,200,250,200);
  21         mapa->novaLinha(30,100,100,100);
  22 }
  23
  24 bool init_GL()
  25 {
  26     //Set clear color
  27     glClearColor( 1, 1, 1, 0 );
  28
  29     //Set projection
  30     glMatrixMode( GL_PROJECTION );
  31     glLoadIdentity();
  32     glOrtho( 0, SCREEN_WIDTH, SCREEN_HEIGHT, 0, -1, 1 );
  33
  34     //Initialize modelview matrix
  35     glMatrixMode( GL_MODELVIEW );
  36     glLoadIdentity();
  37
  38     //Linhas
  39     glLineWidth(2.5);
  40     glEnable(GL_LINE_SMOOTH);
  41     glEnable(GL_BLEND);
  42     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
  43     glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
  44
  45     //If there was any errors
  46     if( glGetError() != GL_NO_ERROR )
  47     {
  48         return false;
  49     }
  50
  51     //If everything initialized
  52     return true;
  53 }
  54
  55 Game::Game()
  56 {
  57         gravityManager = new GravityManager;
  58
  59     //Initialize SDL
  60     if( SDL_Init( SDL_INIT_EVERYTHING ) < 0 )
  61     {
  62         //erro
  63     }
  64
  65     //Create Window
  66     if( SDL_SetVideoMode( SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_BPP, SDL_OPENGL ) == NULL )
  67     {
  68         //erro
  69     }
  70
  71     //Initialize OpenGL
  72     if( !init_GL() )
  73     {
  74         //erro
  75     }
  76
  77     //Set caption
  78     SDL_WM_SetCaption( "Prototipo Jogo", NULL );
  79 }
  80
  81 void Game::show() {
  82         glClear( GL_COLOR_BUFFER_BIT );
  83     double x, y;
  84
  85     if (player->getX() <= SCREEN_WIDTH/2)
  86         x = 0;
  87     else if (player->getX() >= mapa->xmax() - SCREEN_WIDTH/2)
  88         x = mapa->xmax() - SCREEN_WIDTH;
  89     else
  90         x = player->getX() - SCREEN_WIDTH/2;
  91
  92     if (player->getY() <= 2*SCREEN_HEIGHT/3)
  93         y = 0;
  94     else if (player->getY() >= mapa->ymax() - SCREEN_HEIGHT/3)
  95         y = mapa->ymax() - SCREEN_HEIGHT;
  96     else
  97         y = player->getY() - 2*SCREEN_HEIGHT/3;
  98
  99         player->desenha();
 100         mapa->desenha();
 101
 102     glMatrixMode( GL_PROJECTION );
 103     glLoadIdentity();
 104     glOrtho( x, x+SCREEN_WIDTH, y+SCREEN_HEIGHT, y, -1, 1 );
 105         SDL_GL_SwapBuffers();
 106 }
 107
 108 void Game::mainLoop() {
 109         luaRun luaEnv;
 110         luaEnv.registerScripts();
 111         luaEnv.loadScripts();
 112         Timer fps;
 113
 114         player = new Player(this);
 115         geraMapa();
 116         Controle c(*player);
 117         bool quit = false;
 118         while (!quit) {
 119                 fps.start();
 120                 //player events
 121                 c.eventLoop();
 122
 123                 //colision, gravity
 124                 gravityManager->update();
 125
 126                 //movements
 127                 player->move();
 128                 quit = c.getQuit();
 129                 show();
 130                 if (fps.get_ticks() < 1000 / FRAMES_PER_SECOND ) {
 131                         SDL_Delay( ( 1000 / FRAMES_PER_SECOND ) - fps.get_ticks() );
 132                 }
 133         }
 134 }