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<div class="title">source/presentation/Screen.cpp</div> </div>
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<a href="_screen_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#include "<a class="code" href="_screen_8h.html">Screen.h</a>"</span>
<a name="l00002"></a>00002
<a name="l00003"></a><a class="code" href="class_screen.html#aa430a980cb3dcca13c837f70bf801511">00003</a> <a class="code" href="class_screen.html#aa430a980cb3dcca13c837f70bf801511" title="Creates a Screen with the given width and height in pixels, and the given fullscreen setting...">Screen::Screen</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> screenWidth, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> screenHeight, <span class="keywordtype">bool</span> fullscreen)
<a name="l00004"></a>00004 :_exitClicked(false),
<a name="l00005"></a>00005 _screenWidth(screenWidth),
<a name="l00006"></a>00006 _screenHeight(screenHeight),
<a name="l00007"></a>00007 _gameAreaWidth(_screenWidth*0.75),
<a name="l00008"></a>00008 _infoPanelWidth(_screenWidth - _gameAreaWidth)
<a name="l00009"></a>00009 {
<a name="l00010"></a>00010 <span class="keywordflow">if</span> (fullscreen)
<a name="l00011"></a>00011 {
<a name="l00012"></a>00012 al_set_new_display_flags(ALLEGRO_FULLSCREEN_WINDOW);
<a name="l00013"></a>00013 <span class="keywordflow">if</span> (!<a class="code" href="class_screen.html#a6480d57328a39c579f312774b5fbf571" title="Checks the current resolution (_screenWidth and _screenHeight) against the screen's supported resolut...">resolutionSupported</a>())
<a name="l00014"></a>00014 {
<a name="l00015"></a>00015 al_show_native_message_box(NULL, <span class="stringliteral">"Fatal error"</span>, <span class="stringliteral">"Fatal error"</span>, <span class="stringliteral">"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."</span>, NULL, ALLEGRO_MESSAGEBOX_ERROR);
<a name="l00016"></a>00016 <span class="keywordflow">throw</span> <a class="code" href="class_bad_resolution.html" title="Exception that is thrown if the Config file requests a resolution that can not work.">BadResolution</a>();
<a name="l00017"></a>00017 }
<a name="l00018"></a>00018 }
<a name="l00019"></a>00019 <span class="keywordflow">else</span>
<a name="l00020"></a>00020 {
<a name="l00021"></a>00021 al_set_new_display_flags(ALLEGRO_WINDOWED);
<a name="l00022"></a>00022 <span class="comment">//need to add error checking for windows that are way too big</span>
<a name="l00023"></a>00023 }
<a name="l00024"></a>00024
<a name="l00025"></a>00025 al_set_new_display_option(ALLEGRO_VSYNC, 1, ALLEGRO_SUGGEST);
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <a class="code" href="class_screen.html#a4972e24cf3677e51b18feac34a563ba0" title="The window created on the player's monitor to see the game.">_display</a> = al_create_display(<a class="code" href="class_screen.html#a5931238a3eb8cf1a14b0f8b8d7044b65" title="Horizontal number of pixels per row on the screen.">_screenWidth</a>, <a class="code" href="class_screen.html#a8784c86e10d2b6af0dd99d710f3955e9" title="Vertical number of pixels per column on the screen.">_screenHeight</a>);
<a name="l00028"></a>00028
<a name="l00029"></a>00029 al_hide_mouse_cursor(<a class="code" href="class_screen.html#a4972e24cf3677e51b18feac34a563ba0" title="The window created on the player's monitor to see the game.">_display</a>);
<a name="l00030"></a>00030 <a class="code" href="class_screen.html#aa4ea622368bdf47a3b22d026048ee83a" title="Events caught by the screen, checked for an exit command.">_windowEvents</a> = al_create_event_queue();
<a name="l00031"></a>00031 al_register_event_source(<a class="code" href="class_screen.html#aa4ea622368bdf47a3b22d026048ee83a" title="Events caught by the screen, checked for an exit command.">_windowEvents</a>, al_get_display_event_source(<a class="code" href="class_screen.html#a4972e24cf3677e51b18feac34a563ba0" title="The window created on the player's monitor to see the game.">_display</a>));
<a name="l00032"></a>00032 <span class="comment">//used so that ESC can be pressed to exit.</span>
<a name="l00033"></a>00033 al_register_event_source(<a class="code" href="class_screen.html#aa4ea622368bdf47a3b22d026048ee83a" title="Events caught by the screen, checked for an exit command.">_windowEvents</a>, al_get_keyboard_event_source());
<a name="l00034"></a>00034
<a name="l00035"></a>00035 <a class="code" href="class_screen.html#a42a627863a8f9d1529278cb060d4102b" title="Font used in drawing splash screens.">_font</a> = al_load_font(<span class="stringliteral">"junction 02.ttf"</span>, <a class="code" href="class_screen.html#a5931238a3eb8cf1a14b0f8b8d7044b65" title="Horizontal number of pixels per row on the screen.">_screenWidth</a>/10, 0);
<a name="l00036"></a>00036 <span class="keywordflow">if</span> (<a class="code" href="class_screen.html#a42a627863a8f9d1529278cb060d4102b" title="Font used in drawing splash screens.">_font</a> == NULL)
<a name="l00037"></a>00037 {
<a name="l00038"></a>00038 al_show_native_message_box(NULL, <span class="stringliteral">"Fatal error"</span>, <span class="stringliteral">"Fatal error"</span>, <span class="stringliteral">"The file 'junction 02.ttf' was not found. Ensure that it is located in the working directory."</span>, NULL, ALLEGRO_MESSAGEBOX_ERROR);
<a name="l00039"></a>00039 al_destroy_event_queue(<a class="code" href="class_screen.html#aa4ea622368bdf47a3b22d026048ee83a" title="Events caught by the screen, checked for an exit command.">_windowEvents</a>);
<a name="l00040"></a>00040 al_destroy_display(<a class="code" href="class_screen.html#a4972e24cf3677e51b18feac34a563ba0" title="The window created on the player's monitor to see the game.">_display</a>);
<a name="l00041"></a>00041 <span class="keywordflow">throw</span> <a class="code" href="class_install_failure.html" title="Exception to be thrown if any component of Allegro fails to install at runtime.">InstallFailure</a>();
<a name="l00042"></a>00042 }
<a name="l00043"></a>00043
<a name="l00044"></a>00044 ALLEGRO_BITMAP* front = al_get_backbuffer(<a class="code" href="class_screen.html#a4972e24cf3677e51b18feac34a563ba0" title="The window created on the player's monitor to see the game.">_display</a>);
<a name="l00045"></a>00045 al_flip_display();
<a name="l00046"></a>00046 ALLEGRO_BITMAP* back = al_get_backbuffer(<a class="code" href="class_screen.html#a4972e24cf3677e51b18feac34a563ba0" title="The window created on the player's monitor to see the game.">_display</a>);
<a name="l00047"></a>00047
<a name="l00048"></a>00048 <a class="code" href="class_screen.html#a30ba66122613181e312e0d7586d2a814" title="Polymorphic container used to encapsulate the different types of drawing to the screen.">_panels</a>.push_back(<span class="keyword">new</span> <a class="code" href="class_game_panel.html" title="ScreenPanel to be drawn on the screen to draw the area where the game takes place.">GamePanel</a>(back, front, 0, 0, <a class="code" href="class_screen.html#a7cba9fb0069d763055ef351452a15227" title="Width of the GamePanel created.">_gameAreaWidth</a>, <a class="code" href="class_screen.html#a8784c86e10d2b6af0dd99d710f3955e9" title="Vertical number of pixels per column on the screen.">_screenHeight</a>));
<a name="l00049"></a>00049 <a class="code" href="class_screen.html#a30ba66122613181e312e0d7586d2a814" title="Polymorphic container used to encapsulate the different types of drawing to the screen.">_panels</a>.push_back(<span class="keyword">new</span> <a class="code" href="class_info_panel.html" title="ScreenPanel to be drawn on the screen to give the player information.">InfoPanel</a>(back, front, <a class="code" href="class_screen.html#a7cba9fb0069d763055ef351452a15227" title="Width of the GamePanel created.">_gameAreaWidth</a>, 0, <a class="code" href="class_screen.html#ab895e588a89e1943303487d47a2b9216" title="Width of the InfoPanel created. The InfoPanel is placed directly to the right of the GamePanel...">_infoPanelWidth</a>, <a class="code" href="class_screen.html#a8784c86e10d2b6af0dd99d710f3955e9" title="Vertical number of pixels per column on the screen.">_screenHeight</a>));
<a name="l00050"></a>00050 }
<a name="l00051"></a>00051
<a name="l00052"></a><a class="code" href="class_screen.html#a4243bc17596af96415b09ac48205676d">00052</a> <a class="code" href="class_screen.html#a4243bc17596af96415b09ac48205676d" title="Destructor to ensure that the display and any ScreenPanels are destroyed properly.">Screen::~Screen</a>()
<a name="l00053"></a>00053 {
<a name="l00054"></a>00054 <span class="keywordflow">for</span> (vector<ScreenPanel*>::iterator iter = <a class="code" href="class_screen.html#a30ba66122613181e312e0d7586d2a814" title="Polymorphic container used to encapsulate the different types of drawing to the screen.">_panels</a>.begin(); iter!=<a class="code" href="class_screen.html#a30ba66122613181e312e0d7586d2a814" title="Polymorphic container used to encapsulate the different types of drawing to the screen.">_panels</a>.end(); ++iter)
<a name="l00055"></a>00055 {
<a name="l00056"></a>00056 <span class="keyword">delete</span> (*iter);
<a name="l00057"></a>00057 }
<a name="l00058"></a>00058 <a class="code" href="class_screen.html#a30ba66122613181e312e0d7586d2a814" title="Polymorphic container used to encapsulate the different types of drawing to the screen.">_panels</a>.clear();
<a name="l00059"></a>00059
<a name="l00060"></a>00060 al_destroy_font(<a class="code" href="class_screen.html#a42a627863a8f9d1529278cb060d4102b" title="Font used in drawing splash screens.">_font</a>);
<a name="l00061"></a>00061 al_destroy_event_queue(<a class="code" href="class_screen.html#aa4ea622368bdf47a3b22d026048ee83a" title="Events caught by the screen, checked for an exit command.">_windowEvents</a>);
<a name="l00062"></a>00062 al_destroy_display(<a class="code" href="class_screen.html#a4972e24cf3677e51b18feac34a563ba0" title="The window created on the player's monitor to see the game.">_display</a>);
<a name="l00063"></a>00063 }
<a name="l00064"></a>00064
<a name="l00065"></a><a class="code" href="class_screen.html#a45d06e513491e40f76013fb670c6c6cc">00065</a> <span class="keywordtype">string</span> <a class="code" href="class_screen.html#a45d06e513491e40f76013fb670c6c6cc" title="Presents the player with a file dialog, requesting a level file to be selected.">Screen::getLevel</a>()
<a name="l00066"></a>00066 {
<a name="l00067"></a>00067 <span class="keywordtype">string</span> result(<span class="stringliteral">""</span>);
<a name="l00068"></a>00068 ALLEGRO_FILECHOOSER* filechooser = al_create_native_file_dialog(<span class="stringliteral">"."</span>, <span class="stringliteral">"Choose your level"</span>, <span class="stringliteral">"*.lvl"</span>,ALLEGRO_FILECHOOSER_FILE_MUST_EXIST);
<a name="l00069"></a>00069 al_show_native_file_dialog(<a class="code" href="class_screen.html#a4972e24cf3677e51b18feac34a563ba0" title="The window created on the player's monitor to see the game.">_display</a>, filechooser);
<a name="l00070"></a>00070 <span class="keywordflow">if</span> (al_get_native_file_dialog_count(filechooser)==0)
<a name="l00071"></a>00071 {
<a name="l00072"></a>00072 <a class="code" href="class_screen.html#ae7f213f79bf9680e0ff3f4b52ebf051f" title="Set to true when the user chooses to quit the game.">_exitClicked</a> = <span class="keyword">true</span>;
<a name="l00073"></a>00073 }
<a name="l00074"></a>00074 <span class="keywordflow">else</span>
<a name="l00075"></a>00075 {
<a name="l00076"></a>00076 result = al_get_native_file_dialog_path(filechooser, 0);
<a name="l00077"></a>00077 }
<a name="l00078"></a>00078
<a name="l00079"></a>00079 al_destroy_native_file_dialog(filechooser);
<a name="l00080"></a>00080 <span class="keywordflow">return</span> result;
<a name="l00081"></a>00081 }
<a name="l00082"></a>00082
<a name="l00083"></a><a class="code" href="class_screen.html#aec3c5c20e14d6ef033c8a6a559a84872">00083</a> <span class="keywordtype">void</span> <a class="code" href="class_screen.html#aec3c5c20e14d6ef033c8a6a559a84872" title="Draws the given objects on the screen.">Screen::draw</a>(<span class="keyword">const</span> <a class="code" href="class_maze.html" title="A rectangular 2D boolean array, representing where cars can drive and where they cannot.">Maze</a>& maze, <span class="keyword">const</span> list<PlayerCar>& players, <span class="keyword">const</span> list<EnemyCar>& enemies, <span class="keyword">const</span> list<Checkpoint>& checkpoints, <span class="keyword">const</span> list<Rock>& rocks, <span class="keyword">const</span> list<Smokescreen>& smokescreens, <span class="keyword">const</span> list<DestroyedObjectPopup>& popups)
<a name="l00084"></a>00084 {
<a name="l00085"></a>00085 <span class="keywordflow">for</span> (vector<ScreenPanel*>::iterator iter = <a class="code" href="class_screen.html#a30ba66122613181e312e0d7586d2a814" title="Polymorphic container used to encapsulate the different types of drawing to the screen.">_panels</a>.begin(); iter!=<a class="code" href="class_screen.html#a30ba66122613181e312e0d7586d2a814" title="Polymorphic container used to encapsulate the different types of drawing to the screen.">_panels</a>.end(); ++iter)
<a name="l00086"></a>00086 {
<a name="l00087"></a>00087 (*iter)->draw(maze, players, enemies, checkpoints, rocks, smokescreens, popups);
<a name="l00088"></a>00088 }
<a name="l00089"></a>00089 <a class="code" href="class_screen.html#abd12bddd241c8d214d2423804fe20ffb" title="Flips the display's buffers, as well as those for all of the ScreenPanels.">flip</a>();
<a name="l00090"></a>00090 }
<a name="l00091"></a>00091
<a name="l00092"></a><a class="code" href="class_screen.html#abd12bddd241c8d214d2423804fe20ffb">00092</a> <span class="keywordtype">void</span> <a class="code" href="class_screen.html#abd12bddd241c8d214d2423804fe20ffb" title="Flips the display's buffers, as well as those for all of the ScreenPanels.">Screen::flip</a>()
<a name="l00093"></a>00093 {
<a name="l00094"></a>00094 al_flip_display();
<a name="l00095"></a>00095 <span class="keywordflow">for</span> (vector<ScreenPanel*>::iterator iter = <a class="code" href="class_screen.html#a30ba66122613181e312e0d7586d2a814" title="Polymorphic container used to encapsulate the different types of drawing to the screen.">_panels</a>.begin(); iter!=<a class="code" href="class_screen.html#a30ba66122613181e312e0d7586d2a814" title="Polymorphic container used to encapsulate the different types of drawing to the screen.">_panels</a>.end(); ++iter)
<a name="l00096"></a>00096 {
<a name="l00097"></a>00097 (*iter)->flip();
<a name="l00098"></a>00098 }
<a name="l00099"></a>00099 }
<a name="l00100"></a>00100
<a name="l00101"></a><a class="code" href="class_screen.html#ad4c1281e4d59eb89377dd87bba8a310e">00101</a> <span class="keywordtype">void</span> <a class="code" href="class_screen.html#ad4c1281e4d59eb89377dd87bba8a310e" title="Draws a splash screen when the level has been won.">Screen::drawWin</a>()
<a name="l00102"></a>00102 {
<a name="l00103"></a>00103 <a class="code" href="class_screen.html#abd12bddd241c8d214d2423804fe20ffb" title="Flips the display's buffers, as well as those for all of the ScreenPanels.">flip</a>();
<a name="l00104"></a>00104
<a name="l00105"></a>00105 ALLEGRO_COLOR transBlack = al_map_rgba(0,0,0,200);
<a name="l00106"></a>00106 al_draw_filled_rectangle(0,0,<a class="code" href="class_screen.html#a5931238a3eb8cf1a14b0f8b8d7044b65" title="Horizontal number of pixels per row on the screen.">_screenWidth</a>,<a class="code" href="class_screen.html#a8784c86e10d2b6af0dd99d710f3955e9" title="Vertical number of pixels per column on the screen.">_screenHeight</a>, transBlack);
<a name="l00107"></a>00107
<a name="l00108"></a>00108 ALLEGRO_COLOR textColour = al_map_rgb(255,255,255);
<a name="l00109"></a>00109 al_draw_text(<a class="code" href="class_screen.html#a42a627863a8f9d1529278cb060d4102b" title="Font used in drawing splash screens.">_font</a>, textColour, <a class="code" href="class_screen.html#a5931238a3eb8cf1a14b0f8b8d7044b65" title="Horizontal number of pixels per row on the screen.">_screenWidth</a>/2, <a class="code" href="class_screen.html#a8784c86e10d2b6af0dd99d710f3955e9" title="Vertical number of pixels per column on the screen.">_screenHeight</a>/2, ALLEGRO_ALIGN_CENTRE , <span class="stringliteral">"You win!"</span>);
<a name="l00110"></a>00110
<a name="l00111"></a>00111 <a class="code" href="class_screen.html#abd12bddd241c8d214d2423804fe20ffb" title="Flips the display's buffers, as well as those for all of the ScreenPanels.">flip</a>();
<a name="l00112"></a>00112 }
<a name="l00113"></a>00113
<a name="l00114"></a><a class="code" href="class_screen.html#aab9ab8447df2b526985970d2ac80c919">00114</a> <span class="keywordtype">void</span> <a class="code" href="class_screen.html#aab9ab8447df2b526985970d2ac80c919" title="Draws a splash screen when the level has been lost.">Screen::drawLoss</a>()
<a name="l00115"></a>00115 {
<a name="l00116"></a>00116 <a class="code" href="class_screen.html#abd12bddd241c8d214d2423804fe20ffb" title="Flips the display's buffers, as well as those for all of the ScreenPanels.">flip</a>();
<a name="l00117"></a>00117
<a name="l00118"></a>00118 ALLEGRO_COLOR transBlack = al_map_rgba(0,0,0,200);
<a name="l00119"></a>00119 al_draw_filled_rectangle(0,0,<a class="code" href="class_screen.html#a5931238a3eb8cf1a14b0f8b8d7044b65" title="Horizontal number of pixels per row on the screen.">_screenWidth</a>,<a class="code" href="class_screen.html#a8784c86e10d2b6af0dd99d710f3955e9" title="Vertical number of pixels per column on the screen.">_screenHeight</a>, transBlack);
<a name="l00120"></a>00120
<a name="l00121"></a>00121 ALLEGRO_COLOR textColour = al_map_rgb(255,255,255);
<a name="l00122"></a>00122 al_draw_text(<a class="code" href="class_screen.html#a42a627863a8f9d1529278cb060d4102b" title="Font used in drawing splash screens.">_font</a>, textColour, <a class="code" href="class_screen.html#a5931238a3eb8cf1a14b0f8b8d7044b65" title="Horizontal number of pixels per row on the screen.">_screenWidth</a>/2, <a class="code" href="class_screen.html#a8784c86e10d2b6af0dd99d710f3955e9" title="Vertical number of pixels per column on the screen.">_screenHeight</a>/2, ALLEGRO_ALIGN_CENTRE , <span class="stringliteral">"You lose!"</span>);
<a name="l00123"></a>00123
<a name="l00124"></a>00124 <a class="code" href="class_screen.html#abd12bddd241c8d214d2423804fe20ffb" title="Flips the display's buffers, as well as those for all of the ScreenPanels.">flip</a>();
<a name="l00125"></a>00125 }
<a name="l00126"></a>00126
<a name="l00127"></a><a class="code" href="class_screen.html#acca34443ba0ad97922069658d688ea9a">00127</a> <span class="keywordtype">bool</span> <a class="code" href="class_screen.html#acca34443ba0ad97922069658d688ea9a" title="Function to find if the player has chosen to exit the game.">Screen::exitClicked</a>()
<a name="l00128"></a>00128 {
<a name="l00129"></a>00129 <span class="keywordflow">if</span> (<a class="code" href="class_screen.html#ae7f213f79bf9680e0ff3f4b52ebf051f" title="Set to true when the user chooses to quit the game.">_exitClicked</a>) <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00130"></a>00130
<a name="l00131"></a>00131 ALLEGRO_EVENT event;
<a name="l00132"></a>00132 <span class="keywordflow">while</span> (al_get_next_event(<a class="code" href="class_screen.html#aa4ea622368bdf47a3b22d026048ee83a" title="Events caught by the screen, checked for an exit command.">_windowEvents</a>, &event))
<a name="l00133"></a>00133 {
<a name="l00134"></a>00134 <span class="keywordflow">if</span> (event.type==ALLEGRO_EVENT_DISPLAY_CLOSE || (event.type==ALLEGRO_EVENT_KEY_CHAR && event.keyboard.keycode==ALLEGRO_KEY_ESCAPE))
<a name="l00135"></a>00135 {
<a name="l00136"></a>00136 al_flush_event_queue(<a class="code" href="class_screen.html#aa4ea622368bdf47a3b22d026048ee83a" title="Events caught by the screen, checked for an exit command.">_windowEvents</a>);
<a name="l00137"></a>00137 <a class="code" href="class_screen.html#ae7f213f79bf9680e0ff3f4b52ebf051f" title="Set to true when the user chooses to quit the game.">_exitClicked</a> = <span class="keyword">true</span>;
<a name="l00138"></a>00138 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00139"></a>00139 }
<a name="l00140"></a>00140 }
<a name="l00141"></a>00141
<a name="l00142"></a>00142 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00143"></a>00143 }
<a name="l00144"></a>00144
<a name="l00145"></a><a class="code" href="class_screen.html#a6480d57328a39c579f312774b5fbf571">00145</a> <span class="keywordtype">bool</span> <a class="code" href="class_screen.html#a6480d57328a39c579f312774b5fbf571" title="Checks the current resolution (_screenWidth and _screenHeight) against the screen's supported resolut...">Screen::resolutionSupported</a>()
<a name="l00146"></a>00146 {
<a name="l00147"></a>00147 ALLEGRO_DISPLAY_MODE mode;
<a name="l00148"></a>00148 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<al_get_num_display_modes(); ++i)
<a name="l00149"></a>00149 {
<a name="l00150"></a>00150 al_get_display_mode(i, &mode);
<a name="l00151"></a>00151
<a name="l00152"></a>00152 <span class="keywordflow">if</span> (static_cast<unsigned int>(mode.width)==<a class="code" href="class_screen.html#a5931238a3eb8cf1a14b0f8b8d7044b65" title="Horizontal number of pixels per row on the screen.">_screenWidth</a> && static_cast<unsigned int>(mode.height)==<a class="code" href="class_screen.html#a8784c86e10d2b6af0dd99d710f3955e9" title="Vertical number of pixels per column on the screen.">_screenHeight</a>)
<a name="l00153"></a>00153 {
<a name="l00154"></a>00154 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00155"></a>00155 }
<a name="l00156"></a>00156 }
<a name="l00157"></a>00157
<a name="l00158"></a>00158 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00159"></a>00159 }
</pre></div></div>
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