Rally X: source/presentation/Screen.cpp Source File

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Rally X + +
ELEN3009 Project by Justin Wernick and David Schneider
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00001 #include "Screen.h"
+00002 
+00003 Screen::Screen(unsigned int screenWidth, unsigned int screenHeight, bool fullscreen)
+00004     :_exitClicked(false),
+00005     _screenWidth(screenWidth),
+00006     _screenHeight(screenHeight),
+00007     _gameAreaWidth(_screenWidth*0.75),
+00008     _infoPanelWidth(_screenWidth - _gameAreaWidth)
+00009 {
+00010     if (fullscreen)
+00011     {
+00012         al_set_new_display_flags(ALLEGRO_FULLSCREEN_WINDOW);
+00013         if (!resolutionSupported())
+00014         {
+00015             al_show_native_message_box(NULL, "Fatal error", "Fatal error", "The fullscreen resolution specified in config.txt is not supported by your system. Please open config.txt and change the resolution to a supported resolution, or change fullscreen to false.", NULL, ALLEGRO_MESSAGEBOX_ERROR);
+00016             throw BadResolution();
+00017         }
+00018     }
+00019     else
+00020     {
+00021         al_set_new_display_flags(ALLEGRO_WINDOWED);
+00022         //need to add error checking for windows that are way too big
+00023     }
+00024 
+00025     al_set_new_display_option(ALLEGRO_VSYNC, 1, ALLEGRO_SUGGEST);
+00026 
+00027     _display = al_create_display(_screenWidth, _screenHeight);
+00028 
+00029     al_hide_mouse_cursor(_display);
+00030     _windowEvents = al_create_event_queue();
+00031     al_register_event_source(_windowEvents, al_get_display_event_source(_display));
+00032     //used so that ESC can be pressed to exit.
+00033     al_register_event_source(_windowEvents, al_get_keyboard_event_source());
+00034 
+00035     _font = al_load_font("junction 02.ttf", _screenWidth/10, 0);
+00036     if (_font == NULL)
+00037     {
+00038         al_show_native_message_box(NULL, "Fatal error", "Fatal error", "The file 'junction 02.ttf' was not found. Ensure that it is located in the working directory.", NULL, ALLEGRO_MESSAGEBOX_ERROR);
+00039         al_destroy_event_queue(_windowEvents);
+00040         al_destroy_display(_display);
+00041         throw InstallFailure();
+00042     }
+00043 
+00044     ALLEGRO_BITMAP* front = al_get_backbuffer(_display);
+00045     al_flip_display();
+00046     ALLEGRO_BITMAP* back = al_get_backbuffer(_display);
+00047 
+00048     _panels.push_back(new GamePanel(back, front, 0, 0, _gameAreaWidth, _screenHeight));
+00049     _panels.push_back(new InfoPanel(back, front, _gameAreaWidth, 0, _infoPanelWidth, _screenHeight));
+00050 }
+00051 
+00052 Screen::~Screen()
+00053 {
+00054     for (vector<ScreenPanel*>::iterator iter = _panels.begin(); iter!=_panels.end(); ++iter)
+00055     {
+00056         delete (*iter);
+00057     }
+00058     _panels.clear();
+00059 
+00060     al_destroy_font(_font);
+00061     al_destroy_event_queue(_windowEvents);
+00062     al_destroy_display(_display);
+00063 }
+00064 
+00065 string Screen::getLevel()
+00066 {
+00067     string result("");
+00068     ALLEGRO_FILECHOOSER* filechooser = al_create_native_file_dialog(".", "Choose your level", "*.lvl",ALLEGRO_FILECHOOSER_FILE_MUST_EXIST);
+00069     al_show_native_file_dialog(_display, filechooser);
+00070     if (al_get_native_file_dialog_count(filechooser)==0)
+00071     {
+00072         _exitClicked = true;
+00073     }
+00074     else
+00075     {
+00076         result = al_get_native_file_dialog_path(filechooser, 0);
+00077     }
+00078 
+00079     al_destroy_native_file_dialog(filechooser);
+00080     return result;
+00081 }
+00082 
+00083 void Screen::draw(const Maze& maze, const list<PlayerCar>& players, const list<EnemyCar>& enemies, const list<Checkpoint>& checkpoints, const list<Rock>& rocks, const list<Smokescreen>& smokescreens, const list<DestroyedObjectPopup>& popups)
+00084 {
+00085     for (vector<ScreenPanel*>::iterator iter =  _panels.begin(); iter!=_panels.end(); ++iter)
+00086     {
+00087         (*iter)->draw(maze, players, enemies, checkpoints, rocks, smokescreens, popups);
+00088     }
+00089     flip();
+00090 }
+00091 
+00092 void Screen::flip()
+00093 {
+00094     al_flip_display();
+00095     for (vector<ScreenPanel*>::iterator iter =  _panels.begin(); iter!=_panels.end(); ++iter)
+00096     {
+00097         (*iter)->flip();
+00098     }
+00099 }
+00100 
+00101 void Screen::drawWin()
+00102 {
+00103     flip();
+00104 
+00105     ALLEGRO_COLOR transBlack = al_map_rgba(0,0,0,200);
+00106     al_draw_filled_rectangle(0,0,_screenWidth,_screenHeight, transBlack);
+00107 
+00108     ALLEGRO_COLOR textColour = al_map_rgb(255,255,255);
+00109     al_draw_text(_font, textColour, _screenWidth/2, _screenHeight/2, ALLEGRO_ALIGN_CENTRE , "You win!");
+00110 
+00111     flip();
+00112 }
+00113 
+00114 void Screen::drawLoss()
+00115 {
+00116     flip();
+00117 
+00118     ALLEGRO_COLOR transBlack = al_map_rgba(0,0,0,200);
+00119     al_draw_filled_rectangle(0,0,_screenWidth,_screenHeight, transBlack);
+00120 
+00121     ALLEGRO_COLOR textColour = al_map_rgb(255,255,255);
+00122     al_draw_text(_font, textColour, _screenWidth/2, _screenHeight/2, ALLEGRO_ALIGN_CENTRE , "You lose!");
+00123 
+00124     flip();
+00125 }
+00126 
+00127 bool Screen::exitClicked()
+00128 {
+00129     if (_exitClicked) return true;
+00130 
+00131     ALLEGRO_EVENT event;
+00132     while (al_get_next_event(_windowEvents, &event))
+00133     {
+00134         if (event.type==ALLEGRO_EVENT_DISPLAY_CLOSE || (event.type==ALLEGRO_EVENT_KEY_CHAR && event.keyboard.keycode==ALLEGRO_KEY_ESCAPE))
+00135         {
+00136             al_flush_event_queue(_windowEvents);
+00137             _exitClicked = true;
+00138             return true;
+00139         }
+00140     }
+00141 
+00142     return false;
+00143 }
+00144 
+00145 bool Screen::resolutionSupported()
+00146 {
+00147     ALLEGRO_DISPLAY_MODE mode;
+00148     for (int i=0; i<al_get_num_display_modes(); ++i)
+00149     {
+00150         al_get_display_mode(i, &mode);
+00151 
+00152         if (static_cast<unsigned int>(mode.width)==_screenWidth && static_cast<unsigned int>(mode.height)==_screenHeight)
+00153         {
+00154             return true;
+00155         }
+00156     }
+00157 
+00158     return false;
+00159 }
+