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<div class="title">source/presentation/KeyboardHandler.cpp</div>  </div>
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<a href="_keyboard_handler_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 &quot;<a class="code" href="_keyboard_handler_8h.html">KeyboardHandler.h</a>&quot;</span>
<a name="l00002"></a>00002 
<a name="l00003"></a><a class="code" href="class_keyboard_handler.html#acd0d5781016f792207464bb720d2f994">00003</a> <a class="code" href="class_keyboard_handler.html#acd0d5781016f792207464bb720d2f994" title="Creates a KeyboardHandler with a given initial state.">KeyboardHandler::KeyboardHandler</a>(<a class="code" href="class_maze.html#ad12c28d50f4d7457160a70a94acfe28f" title="Defines the directions in which movement can happen in the maze.">Maze::Direction</a> currentFacing)
<a name="l00004"></a>00004     :_up(false),
<a name="l00005"></a>00005     _down(false),
<a name="l00006"></a>00006     _left(false),
<a name="l00007"></a>00007     _right(false),
<a name="l00008"></a>00008     _smokescreen(false),
<a name="l00009"></a>00009     _previousFacing(currentFacing)
<a name="l00010"></a>00010 {
<a name="l00011"></a>00011     <a class="code" href="class_keyboard_handler.html#a44116ed8745f3a3360e1d7c29ea86d56" title="Queue for all keyboard events.">_keyboardEvents</a> = al_create_event_queue();
<a name="l00012"></a>00012     al_register_event_source(<a class="code" href="class_keyboard_handler.html#a44116ed8745f3a3360e1d7c29ea86d56" title="Queue for all keyboard events.">_keyboardEvents</a>, al_get_keyboard_event_source());
<a name="l00013"></a>00013 }
<a name="l00014"></a>00014 
<a name="l00015"></a><a class="code" href="class_keyboard_handler.html#a8942a24f122f96b2b5d7c91f1c6ff332">00015</a> <a class="code" href="class_keyboard_handler.html#acd0d5781016f792207464bb720d2f994" title="Creates a KeyboardHandler with a given initial state.">KeyboardHandler::KeyboardHandler</a>(<span class="keyword">const</span> <a class="code" href="class_keyboard_handler.html" title="Class for handling keyboard related game inputs from the player.">KeyboardHandler</a>&amp; ref)
<a name="l00016"></a>00016     :_up(ref._up),
<a name="l00017"></a>00017     _down(ref._down),
<a name="l00018"></a>00018     _left(ref._left),
<a name="l00019"></a>00019     _right(ref._right),
<a name="l00020"></a>00020     _smokescreen(ref._smokescreen),
<a name="l00021"></a>00021     _previousFacing(ref._previousFacing)
<a name="l00022"></a>00022 {
<a name="l00023"></a>00023     <a class="code" href="class_keyboard_handler.html#a44116ed8745f3a3360e1d7c29ea86d56" title="Queue for all keyboard events.">_keyboardEvents</a> = al_create_event_queue();
<a name="l00024"></a>00024     al_register_event_source(<a class="code" href="class_keyboard_handler.html#a44116ed8745f3a3360e1d7c29ea86d56" title="Queue for all keyboard events.">_keyboardEvents</a>, al_get_keyboard_event_source());
<a name="l00025"></a>00025 }
<a name="l00026"></a>00026 
<a name="l00027"></a><a class="code" href="class_keyboard_handler.html#a5135c450b82394496457a0a51d5240f5">00027</a> <a class="code" href="class_keyboard_handler.html" title="Class for handling keyboard related game inputs from the player.">KeyboardHandler</a>&amp; <a class="code" href="class_keyboard_handler.html#a5135c450b82394496457a0a51d5240f5" title="Assignment operator that ensures that an assigned KeyboardHandler will have its own event queue...">KeyboardHandler::operator=</a>(<span class="keyword">const</span> <a class="code" href="class_keyboard_handler.html" title="Class for handling keyboard related game inputs from the player.">KeyboardHandler</a>&amp; rhs)
<a name="l00028"></a>00028 {
<a name="l00029"></a>00029     <a class="code" href="class_keyboard_handler.html#ad323844aad47f1bc263ec2fd4a19ac3a" title="True if the up arrow key is depressed.">_up</a> = rhs.<a class="code" href="class_keyboard_handler.html#ad323844aad47f1bc263ec2fd4a19ac3a" title="True if the up arrow key is depressed.">_up</a>;
<a name="l00030"></a>00030     <a class="code" href="class_keyboard_handler.html#aa6d1c75e1a98d4aae96d8ac1c8aaa539" title="True if the down arrow key is depressed.">_down</a> = rhs.<a class="code" href="class_keyboard_handler.html#aa6d1c75e1a98d4aae96d8ac1c8aaa539" title="True if the down arrow key is depressed.">_down</a>;
<a name="l00031"></a>00031     <a class="code" href="class_keyboard_handler.html#a3bc780470d7cbaf9f4ea239e0613ce3c" title="True if the left arrow key is depressed.">_left</a> = rhs.<a class="code" href="class_keyboard_handler.html#a3bc780470d7cbaf9f4ea239e0613ce3c" title="True if the left arrow key is depressed.">_left</a>;
<a name="l00032"></a>00032     <a class="code" href="class_keyboard_handler.html#a81d37831d958ff21c2ce08cfa97ca420" title="True if the right arrow key is depressed.">_right</a> = rhs.<a class="code" href="class_keyboard_handler.html#a81d37831d958ff21c2ce08cfa97ca420" title="True if the right arrow key is depressed.">_right</a>;
<a name="l00033"></a>00033     <a class="code" href="class_keyboard_handler.html#a7769dc815c493fb5962d52c3d5bc7b16" title="True if the smokescreen key is depressed.">_smokescreen</a> = rhs.<a class="code" href="class_keyboard_handler.html#a7769dc815c493fb5962d52c3d5bc7b16" title="True if the smokescreen key is depressed.">_smokescreen</a>;
<a name="l00034"></a>00034     <a class="code" href="class_keyboard_handler.html#a90120a85c62481b3a2c0330511cffbac" title="The direction that was returned on the last call of getFacing.">_previousFacing</a> = rhs.<a class="code" href="class_keyboard_handler.html#a90120a85c62481b3a2c0330511cffbac" title="The direction that was returned on the last call of getFacing.">_previousFacing</a>;
<a name="l00035"></a>00035 
<a name="l00036"></a>00036     <span class="keywordflow">if</span> (<a class="code" href="class_keyboard_handler.html#a44116ed8745f3a3360e1d7c29ea86d56" title="Queue for all keyboard events.">_keyboardEvents</a>!=rhs.<a class="code" href="class_keyboard_handler.html#a44116ed8745f3a3360e1d7c29ea86d56" title="Queue for all keyboard events.">_keyboardEvents</a>) al_destroy_event_queue(<a class="code" href="class_keyboard_handler.html#a44116ed8745f3a3360e1d7c29ea86d56" title="Queue for all keyboard events.">_keyboardEvents</a>);
<a name="l00037"></a>00037 
<a name="l00038"></a>00038     <a class="code" href="class_keyboard_handler.html#a44116ed8745f3a3360e1d7c29ea86d56" title="Queue for all keyboard events.">_keyboardEvents</a> = al_create_event_queue();
<a name="l00039"></a>00039     al_register_event_source(<a class="code" href="class_keyboard_handler.html#a44116ed8745f3a3360e1d7c29ea86d56" title="Queue for all keyboard events.">_keyboardEvents</a>, al_get_keyboard_event_source());
<a name="l00040"></a>00040 
<a name="l00041"></a>00041     <span class="keywordflow">return</span> *<span class="keyword">this</span>;
<a name="l00042"></a>00042 }
<a name="l00043"></a>00043 
<a name="l00044"></a><a class="code" href="class_keyboard_handler.html#ab090fe5afdee856604b0aa0d9eb918a4">00044</a> <a class="code" href="class_keyboard_handler.html#ab090fe5afdee856604b0aa0d9eb918a4" title="Cleans up the keyboard event queue.">KeyboardHandler::~KeyboardHandler</a>()
<a name="l00045"></a>00045 {
<a name="l00046"></a>00046     al_destroy_event_queue(<a class="code" href="class_keyboard_handler.html#a44116ed8745f3a3360e1d7c29ea86d56" title="Queue for all keyboard events.">_keyboardEvents</a>);
<a name="l00047"></a>00047 }
<a name="l00048"></a>00048 
<a name="l00049"></a><a class="code" href="class_keyboard_handler.html#a9f53a546420f3d02363c9e1e4e346420">00049</a> <span class="keywordtype">void</span> <a class="code" href="class_keyboard_handler.html#a9f53a546420f3d02363c9e1e4e346420" title="Processes all pending keyboard inputs, and updates flags as appropriate.">KeyboardHandler::updateFlags</a>()
<a name="l00050"></a>00050 {
<a name="l00051"></a>00051     ALLEGRO_EVENT event;
<a name="l00052"></a>00052     <span class="keywordflow">while</span> (al_get_next_event(<a class="code" href="class_keyboard_handler.html#a44116ed8745f3a3360e1d7c29ea86d56" title="Queue for all keyboard events.">_keyboardEvents</a>, &amp;event))
<a name="l00053"></a>00053     {
<a name="l00054"></a>00054         <span class="keywordflow">if</span> (event.type==ALLEGRO_EVENT_KEY_DOWN)
<a name="l00055"></a>00055         {
<a name="l00056"></a>00056             <span class="keywordflow">switch</span> (event.keyboard.keycode)
<a name="l00057"></a>00057             {
<a name="l00058"></a>00058                 <span class="keywordflow">case</span> <a class="code" href="class_keyboard_handler.html#a3ed342ff89f15b752a9957fd435e9094" title="Key that must be pressed to turn up.">UP_KEY</a>:
<a name="l00059"></a>00059                     <a class="code" href="class_keyboard_handler.html#ad323844aad47f1bc263ec2fd4a19ac3a" title="True if the up arrow key is depressed.">_up</a> = <span class="keyword">true</span>;
<a name="l00060"></a>00060                     <span class="keywordflow">break</span>;
<a name="l00061"></a>00061                 <span class="keywordflow">case</span> <a class="code" href="class_keyboard_handler.html#a3d8d985fdc3c3ac543e84647967f78e4" title="Key that must be pressed to turn down.">DOWN_KEY</a>:
<a name="l00062"></a>00062                     <a class="code" href="class_keyboard_handler.html#aa6d1c75e1a98d4aae96d8ac1c8aaa539" title="True if the down arrow key is depressed.">_down</a> = <span class="keyword">true</span>;
<a name="l00063"></a>00063                     <span class="keywordflow">break</span>;
<a name="l00064"></a>00064                 <span class="keywordflow">case</span> <a class="code" href="class_keyboard_handler.html#ab285a229f4f5c7c1be5504fdb629e10a" title="Key that must be pressed to turn left.">LEFT_KEY</a>:
<a name="l00065"></a>00065                     <a class="code" href="class_keyboard_handler.html#a3bc780470d7cbaf9f4ea239e0613ce3c" title="True if the left arrow key is depressed.">_left</a> = <span class="keyword">true</span>;
<a name="l00066"></a>00066                     <span class="keywordflow">break</span>;
<a name="l00067"></a>00067                 <span class="keywordflow">case</span> <a class="code" href="class_keyboard_handler.html#a0822e8b6338b01cb09d08589d778af86" title="Key that must be pressed to turn right.">RIGHT_KEY</a>:
<a name="l00068"></a>00068                     <a class="code" href="class_keyboard_handler.html#a81d37831d958ff21c2ce08cfa97ca420" title="True if the right arrow key is depressed.">_right</a> = <span class="keyword">true</span>;
<a name="l00069"></a>00069                     <span class="keywordflow">break</span>;
<a name="l00070"></a>00070                 <span class="keywordflow">case</span> <a class="code" href="class_keyboard_handler.html#a2de5780311975180c0b78e7b0457eae1" title="Key that must be pressed to create a smokescreen.">SMOKESCREEN_KEY</a>:
<a name="l00071"></a>00071                     <a class="code" href="class_keyboard_handler.html#a7769dc815c493fb5962d52c3d5bc7b16" title="True if the smokescreen key is depressed.">_smokescreen</a> = <span class="keyword">true</span>;
<a name="l00072"></a>00072                     <span class="keywordflow">break</span>;
<a name="l00073"></a>00073             }
<a name="l00074"></a>00074         }
<a name="l00075"></a>00075         <span class="keywordflow">else</span> <span class="keywordflow">if</span> (event.type==ALLEGRO_EVENT_KEY_UP)
<a name="l00076"></a>00076         {
<a name="l00077"></a>00077             <span class="keywordflow">switch</span> (event.keyboard.keycode)
<a name="l00078"></a>00078             {
<a name="l00079"></a>00079                 <span class="keywordflow">case</span> <a class="code" href="class_keyboard_handler.html#a3ed342ff89f15b752a9957fd435e9094" title="Key that must be pressed to turn up.">UP_KEY</a>:
<a name="l00080"></a>00080                     <a class="code" href="class_keyboard_handler.html#ad323844aad47f1bc263ec2fd4a19ac3a" title="True if the up arrow key is depressed.">_up</a> = <span class="keyword">false</span>;
<a name="l00081"></a>00081                     <span class="keywordflow">break</span>;
<a name="l00082"></a>00082                 <span class="keywordflow">case</span> <a class="code" href="class_keyboard_handler.html#a3d8d985fdc3c3ac543e84647967f78e4" title="Key that must be pressed to turn down.">DOWN_KEY</a>:
<a name="l00083"></a>00083                     <a class="code" href="class_keyboard_handler.html#aa6d1c75e1a98d4aae96d8ac1c8aaa539" title="True if the down arrow key is depressed.">_down</a> = <span class="keyword">false</span>;
<a name="l00084"></a>00084                     <span class="keywordflow">break</span>;
<a name="l00085"></a>00085                 <span class="keywordflow">case</span> <a class="code" href="class_keyboard_handler.html#ab285a229f4f5c7c1be5504fdb629e10a" title="Key that must be pressed to turn left.">LEFT_KEY</a>:
<a name="l00086"></a>00086                     <a class="code" href="class_keyboard_handler.html#a3bc780470d7cbaf9f4ea239e0613ce3c" title="True if the left arrow key is depressed.">_left</a> = <span class="keyword">false</span>;
<a name="l00087"></a>00087                     <span class="keywordflow">break</span>;
<a name="l00088"></a>00088                 <span class="keywordflow">case</span> <a class="code" href="class_keyboard_handler.html#a0822e8b6338b01cb09d08589d778af86" title="Key that must be pressed to turn right.">RIGHT_KEY</a>:
<a name="l00089"></a>00089                     <a class="code" href="class_keyboard_handler.html#a81d37831d958ff21c2ce08cfa97ca420" title="True if the right arrow key is depressed.">_right</a> = <span class="keyword">false</span>;
<a name="l00090"></a>00090                     <span class="keywordflow">break</span>;
<a name="l00091"></a>00091                 <span class="keywordflow">case</span> <a class="code" href="class_keyboard_handler.html#a2de5780311975180c0b78e7b0457eae1" title="Key that must be pressed to create a smokescreen.">SMOKESCREEN_KEY</a>:
<a name="l00092"></a>00092                     <a class="code" href="class_keyboard_handler.html#a7769dc815c493fb5962d52c3d5bc7b16" title="True if the smokescreen key is depressed.">_smokescreen</a> = <span class="keyword">false</span>;
<a name="l00093"></a>00093                     <span class="keywordflow">break</span>;
<a name="l00094"></a>00094             }
<a name="l00095"></a>00095         }
<a name="l00096"></a>00096     }
<a name="l00097"></a>00097 }
<a name="l00098"></a>00098 
<a name="l00099"></a><a class="code" href="class_keyboard_handler.html#ae17ed4bf0abae7d95f9b772a6d704a70">00099</a> <a class="code" href="class_maze.html#ad12c28d50f4d7457160a70a94acfe28f" title="Defines the directions in which movement can happen in the maze.">Maze::Direction</a> <a class="code" href="class_keyboard_handler.html#ae17ed4bf0abae7d95f9b772a6d704a70" title="Gives the last direction that the player entered on the keyboard.">KeyboardHandler::getFacing</a>()
<a name="l00100"></a>00100 {
<a name="l00101"></a>00101     <a class="code" href="class_keyboard_handler.html#a9f53a546420f3d02363c9e1e4e346420" title="Processes all pending keyboard inputs, and updates flags as appropriate.">updateFlags</a>();
<a name="l00102"></a>00102 
<a name="l00103"></a>00103     <span class="keywordflow">if</span> (<a class="code" href="class_keyboard_handler.html#ad323844aad47f1bc263ec2fd4a19ac3a" title="True if the up arrow key is depressed.">_up</a>) <a class="code" href="class_keyboard_handler.html#a90120a85c62481b3a2c0330511cffbac" title="The direction that was returned on the last call of getFacing.">_previousFacing</a> = <a class="code" href="class_maze.html#ad12c28d50f4d7457160a70a94acfe28fad2e008a4b04be5e2d3559c70193920e7">Maze::UP</a>;
<a name="l00104"></a>00104     <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="class_keyboard_handler.html#aa6d1c75e1a98d4aae96d8ac1c8aaa539" title="True if the down arrow key is depressed.">_down</a>) <a class="code" href="class_keyboard_handler.html#a90120a85c62481b3a2c0330511cffbac" title="The direction that was returned on the last call of getFacing.">_previousFacing</a> = <a class="code" href="class_maze.html#ad12c28d50f4d7457160a70a94acfe28fa89ab143d020541957ab5e0e9cfdd3e23">Maze::DOWN</a>;
<a name="l00105"></a>00105     <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="class_keyboard_handler.html#a3bc780470d7cbaf9f4ea239e0613ce3c" title="True if the left arrow key is depressed.">_left</a>) <a class="code" href="class_keyboard_handler.html#a90120a85c62481b3a2c0330511cffbac" title="The direction that was returned on the last call of getFacing.">_previousFacing</a> = <a class="code" href="class_maze.html#ad12c28d50f4d7457160a70a94acfe28faab1a1fe0274cd139b3c0116d8caf458c">Maze::LEFT</a>;
<a name="l00106"></a>00106     <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="class_keyboard_handler.html#a81d37831d958ff21c2ce08cfa97ca420" title="True if the right arrow key is depressed.">_right</a>) <a class="code" href="class_keyboard_handler.html#a90120a85c62481b3a2c0330511cffbac" title="The direction that was returned on the last call of getFacing.">_previousFacing</a> = <a class="code" href="class_maze.html#ad12c28d50f4d7457160a70a94acfe28fa699ae3e1d989e9b12bd200aa86e29e9d">Maze::RIGHT</a>;
<a name="l00107"></a>00107 
<a name="l00108"></a>00108     <span class="keywordflow">return</span> <a class="code" href="class_keyboard_handler.html#a90120a85c62481b3a2c0330511cffbac" title="The direction that was returned on the last call of getFacing.">_previousFacing</a>;
<a name="l00109"></a>00109 }
<a name="l00110"></a>00110 
<a name="l00111"></a><a class="code" href="class_keyboard_handler.html#ab66797a37a1c54a630187519870d9a5b">00111</a> <span class="keywordtype">bool</span> <a class="code" href="class_keyboard_handler.html#ab66797a37a1c54a630187519870d9a5b" title="Gives whether or not the key for creating a Smokescreen is currently pressed.">KeyboardHandler::getSmokescreen</a>()
<a name="l00112"></a>00112 {
<a name="l00113"></a>00113     <span class="keywordflow">return</span> <a class="code" href="class_keyboard_handler.html#a7769dc815c493fb5962d52c3d5bc7b16" title="True if the smokescreen key is depressed.">_smokescreen</a>;
<a name="l00114"></a>00114 }
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