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<div class="title">src/Unuk/main.cpp</div> </div>
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<a href="main_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifdef __unix__</span>
<a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#include <sys/time.h></span>
<a name="l00003"></a>00003 <span class="preprocessor">#endif</span>
<a name="l00004"></a>00004 <span class="preprocessor"></span>
<a name="l00005"></a>00005 <span class="preprocessor">#include <stdio.h></span>
<a name="l00006"></a>00006 <span class="preprocessor">#include <stdlib.h></span>
<a name="l00007"></a>00007 <span class="preprocessor">#include <GL/gl.h></span>
<a name="l00008"></a>00008 <span class="preprocessor">#include <GL/glu.h></span>
<a name="l00009"></a>00009 <span class="preprocessor">#include "SDL/SDL.h"</span>
<a name="l00010"></a>00010 <span class="preprocessor">#include "<a class="code" href="_game_8h.html">Game.h</a>"</span>
<a name="l00011"></a>00011 <span class="preprocessor">#include "../libUnuk/Input.h"</span>
<a name="l00012"></a>00012 <span class="preprocessor">#include "../libUnuk/Debug.h"</span>
<a name="l00013"></a>00013
<a name="l00014"></a>00014 <span class="comment">// Screen width, height, and bit depth.</span>
<a name="l00015"></a><a class="code" href="main_8cpp.html#a3482785bd2a4c8b307f9e0b6f54e2c36">00015</a> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="main_8cpp.html#a3482785bd2a4c8b307f9e0b6f54e2c36">SCREEN_WIDTH</a> = 640;
<a name="l00016"></a><a class="code" href="main_8cpp.html#ab454541ae58bcf6555e8d723b1eb95e7">00016</a> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="main_8cpp.html#ab454541ae58bcf6555e8d723b1eb95e7">SCREEN_HEIGHT</a> = 480;
<a name="l00017"></a><a class="code" href="main_8cpp.html#a8194731fdeea643e725e3a89d2f7ec59">00017</a> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="main_8cpp.html#a8194731fdeea643e725e3a89d2f7ec59">SCREEN_BPP</a> = 16;
<a name="l00018"></a>00018
<a name="l00019"></a>00019 <span class="comment">// Define our SDL surface.</span>
<a name="l00020"></a><a class="code" href="main_8cpp.html#a2f5cac12e913bcfcff660305bf88dd3b">00020</a> SDL_Surface *<a class="code" href="main_8cpp.html#a2f5cac12e913bcfcff660305bf88dd3b">surface</a>;
<a name="l00021"></a>00021
<a name="l00022"></a><a class="code" href="main_8cpp.html#ada2f56ab31a366e16a495936dd004184">00022</a> <span class="keywordtype">void</span> <a class="code" href="main_8cpp.html#ada2f56ab31a366e16a495936dd004184">Quit</a>(<span class="keywordtype">int</span> returnCode) {
<a name="l00023"></a>00023 <a class="code" href="class_debug.html#ace75e2aa3105e64f9fc82c537b45135d">Debug::logger</a>-><a class="code" href="class_debug.html#a7f171818a11f4d6b8dee3b44c4d6f0a7">message</a>(<span class="stringliteral">"-----Cleaning Up------"</span>);
<a name="l00024"></a>00024 <span class="comment">// Clean up the window.</span>
<a name="l00025"></a>00025 SDL_Quit();
<a name="l00026"></a>00026 <a class="code" href="class_debug.html#ace75e2aa3105e64f9fc82c537b45135d">Debug::logger</a>-><a class="code" href="class_debug.html#a7f171818a11f4d6b8dee3b44c4d6f0a7">message</a>(<span class="stringliteral">"Window destroyed!"</span>);
<a name="l00027"></a>00027 <a class="code" href="class_debug.html#aab477ba859e35b69510dee5e7bc476e4">Debug::closeLog</a>();
<a name="l00028"></a>00028 <span class="comment">// And exit appropriately.</span>
<a name="l00029"></a>00029 exit(returnCode);
<a name="l00030"></a>00030 }
<a name="l00031"></a>00031
<a name="l00032"></a>00032 <span class="comment">// Reset our viewport after a window resize.</span>
<a name="l00033"></a><a class="code" href="main_8cpp.html#a4fb3c2550b72c4284dbe38ece28944e3">00033</a> <span class="keywordtype">int</span> <a class="code" href="main_8cpp.html#a4fb3c2550b72c4284dbe38ece28944e3">ResizeWindow</a>(<span class="keywordtype">int</span> <a class="code" href="wglext_8h.html#ae6531b1788ca42a9ae8155b0c52e7630">width</a>, <span class="keywordtype">int</span> <a class="code" href="wglext_8h.html#ab2e63df950c3789599e1e43f477bc9e3">height</a>) {
<a name="l00034"></a>00034 <span class="comment">// Height and width ration.</span>
<a name="l00035"></a>00035 GLfloat ratio;
<a name="l00036"></a>00036
<a name="l00037"></a>00037 <span class="comment">// Prevent divide by zero.</span>
<a name="l00038"></a>00038 <span class="keywordflow">if</span>(height == 0)
<a name="l00039"></a>00039 height = 1;
<a name="l00040"></a>00040
<a name="l00041"></a>00041 ratio = (GLfloat)width / (GLfloat)<a class="code" href="wglext_8h.html#ab2e63df950c3789599e1e43f477bc9e3">height</a>;
<a name="l00042"></a>00042
<a name="l00043"></a>00043 <span class="comment">// Setup our viewport.</span>
<a name="l00044"></a>00044 glViewport(0, 0, (GLsizei)width, (GLsizei)height);
<a name="l00045"></a>00045
<a name="l00046"></a>00046 <span class="comment">// Change to the projection matrix and set our viewing volume.</span>
<a name="l00047"></a>00047 glMatrixMode(GL_PROJECTION);
<a name="l00048"></a>00048 glLoadIdentity();
<a name="l00049"></a>00049
<a name="l00050"></a>00050 <span class="comment">// Set our perspective.</span>
<a name="l00051"></a>00051 gluPerspective(45.0f, ratio, 0.1f, 100.0f);
<a name="l00052"></a>00052
<a name="l00053"></a>00053 <span class="comment">// Change to the MODELVIEW.</span>
<a name="l00054"></a>00054 glMatrixMode(GL_MODELVIEW);
<a name="l00055"></a>00055
<a name="l00056"></a>00056 <span class="comment">// Reset The View.</span>
<a name="l00057"></a>00057 glLoadIdentity();
<a name="l00058"></a>00058
<a name="l00059"></a>00059 <span class="keywordflow">return</span> 1;
<a name="l00060"></a>00060 }
<a name="l00061"></a>00061
<a name="l00062"></a><a class="code" href="main_8cpp.html#a4f3df61842b2672d52d1fa27173bba45">00062</a> <span class="keywordtype">void</span> <a class="code" href="main_8cpp.html#a4f3df61842b2672d52d1fa27173bba45">ProcessEvents</a>(SDL_keysym *keysym) {
<a name="l00063"></a>00063 <span class="keywordflow">switch</span>(keysym->sym) {
<a name="l00064"></a>00064 <span class="keywordflow">case</span> SDLK_ESCAPE:
<a name="l00065"></a>00065 <span class="comment">// Quit if we detect 'esc' key.</span>
<a name="l00066"></a>00066 <a class="code" href="main_8cpp.html#ada2f56ab31a366e16a495936dd004184">Quit</a>(0);
<a name="l00067"></a>00067 <span class="keywordflow">break</span>;
<a name="l00068"></a>00068 <span class="keywordflow">case</span> SDLK_F1:
<a name="l00069"></a>00069 <span class="comment">// Fullscreen.</span>
<a name="l00070"></a>00070 SDL_WM_ToggleFullScreen(<a class="code" href="main_8cpp.html#a2f5cac12e913bcfcff660305bf88dd3b">surface</a>);
<a name="l00071"></a>00071 <span class="keywordflow">break</span>;
<a name="l00072"></a>00072 <span class="keywordflow">default</span>:
<a name="l00073"></a>00073 <span class="keywordflow">break</span>;
<a name="l00074"></a>00074 }
<a name="l00075"></a>00075 <span class="keywordflow">return</span>;
<a name="l00076"></a>00076 }
<a name="l00077"></a>00077
<a name="l00078"></a><a class="code" href="main_8cpp.html#a583c9b24e82b1015dd307199654d8488">00078</a> <span class="keywordtype">int</span> <a class="code" href="main_8cpp.html#a583c9b24e82b1015dd307199654d8488">InitGL</a>(<span class="keywordtype">void</span>) {
<a name="l00079"></a>00079
<a name="l00080"></a>00080 <span class="comment">// Enable smooth shading.</span>
<a name="l00081"></a>00081 glShadeModel(GL_SMOOTH);
<a name="l00082"></a>00082
<a name="l00083"></a>00083 <span class="comment">// Set the background black.</span>
<a name="l00084"></a>00084 glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
<a name="l00085"></a>00085
<a name="l00086"></a>00086 <span class="comment">// Depth buffer setup.</span>
<a name="l00087"></a>00087 glClearDepth(1.0f);
<a name="l00088"></a>00088 glEnable(GL_DEPTH_TEST);
<a name="l00089"></a>00089 glDepthFunc(GL_LEQUAL);
<a name="l00090"></a>00090
<a name="l00091"></a>00091 <span class="comment">// Nice Perspective Calculations.</span>
<a name="l00092"></a>00092 glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
<a name="l00093"></a>00093
<a name="l00094"></a>00094 <span class="keywordflow">return</span> 1;
<a name="l00095"></a>00095 }
<a name="l00096"></a>00096
<a name="l00097"></a><a class="code" href="main_8cpp.html#aa17d85aacf437da3fe7e2cd86abf22c4">00097</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="main_8cpp.html#aa17d85aacf437da3fe7e2cd86abf22c4">GetTickCount</a>() {
<a name="l00098"></a>00098 <span class="keyword">struct </span>timeval t;
<a name="l00099"></a>00099 gettimeofday(&t, <a class="code" href="_node_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);
<a name="l00100"></a>00100
<a name="l00101"></a>00101 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> secs = t.tv_sec * 1000;
<a name="l00102"></a>00102 secs += (t.tv_usec / 1000);
<a name="l00103"></a>00103 <span class="keywordflow">return</span> secs;
<a name="l00104"></a>00104 }
<a name="l00105"></a>00105
<a name="l00106"></a><a class="code" href="main_8cpp.html#a15fbb2a92b276cacefc25bb930101a9e">00106</a> <span class="keywordtype">float</span> <a class="code" href="main_8cpp.html#a15fbb2a92b276cacefc25bb930101a9e">GetElapsedSeconds</a>(<span class="keywordtype">void</span>) {
<a name="l00107"></a>00107 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> lastTime = 0;
<a name="l00108"></a>00108 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> currentTime = <a class="code" href="main_8cpp.html#aa17d85aacf437da3fe7e2cd86abf22c4">GetTickCount</a>();
<a name="l00109"></a>00109 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> diff = currentTime - lastTime;
<a name="l00110"></a>00110 lastTime = currentTime;
<a name="l00111"></a>00111 <span class="keywordflow">return</span> float(diff) / 1000.0f;
<a name="l00112"></a>00112 }
<a name="l00113"></a>00113
<a name="l00114"></a><a class="code" href="main_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">00114</a> <span class="keywordtype">int</span> <a class="code" href="main_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a>() {
<a name="l00115"></a>00115 <span class="comment">// Initialize our Debug log.</span>
<a name="l00116"></a>00116 <a class="code" href="class_debug.html#a70ec5b616303ab46c46f6e231799d07f">Debug::openLog</a>(<span class="keyword">true</span>);
<a name="l00117"></a>00117 <a class="code" href="class_debug.html#ace75e2aa3105e64f9fc82c537b45135d">Debug::logger</a>-><a class="code" href="class_debug.html#a7f171818a11f4d6b8dee3b44c4d6f0a7">message</a>(<span class="stringliteral">"-----Debug Initialized-----"</span>);
<a name="l00118"></a>00118
<a name="l00119"></a>00119 <span class="keywordtype">int</span> videoFlags;
<a name="l00120"></a>00120 <span class="keywordtype">bool</span> done = <span class="keyword">false</span>;
<a name="l00121"></a>00121 SDL_Event event;
<a name="l00122"></a>00122 <span class="keyword">const</span> SDL_VideoInfo *videoInfo;
<a name="l00123"></a>00123 <a class="code" href="class_game.html">Game</a> game;
<a name="l00124"></a>00124
<a name="l00125"></a>00125 <span class="comment">// Initialize SDL.</span>
<a name="l00126"></a>00126 <span class="keywordflow">if</span>(SDL_Init(SDL_INIT_VIDEO) < 0) {
<a name="l00127"></a>00127 fprintf( stderr, <span class="stringliteral">"Video initialization failed: %s\n"</span>, SDL_GetError());
<a name="l00128"></a>00128 <a class="code" href="main_8cpp.html#ada2f56ab31a366e16a495936dd004184">Quit</a>(1);
<a name="l00129"></a>00129 }
<a name="l00130"></a>00130
<a name="l00131"></a>00131 <span class="comment">// Fetch the video info.</span>
<a name="l00132"></a>00132 videoInfo = SDL_GetVideoInfo();
<a name="l00133"></a>00133
<a name="l00134"></a>00134 <span class="comment">// Set the window caption.</span>
<a name="l00135"></a>00135 SDL_WM_SetCaption(<span class="stringliteral">"Unuk"</span>, <a class="code" href="_node_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);
<a name="l00136"></a>00136
<a name="l00137"></a>00137 <span class="keywordflow">if</span>(!videoInfo) {
<a name="l00138"></a>00138 fprintf( stderr, <span class="stringliteral">"Video query failed: %s\n"</span>, SDL_GetError());
<a name="l00139"></a>00139 <a class="code" href="main_8cpp.html#ada2f56ab31a366e16a495936dd004184">Quit</a>(1);
<a name="l00140"></a>00140 }
<a name="l00141"></a>00141
<a name="l00142"></a>00142 <span class="comment">// Pass some flags to SDL_SetVideoMode.</span>
<a name="l00143"></a>00143 videoFlags = SDL_OPENGL;
<a name="l00144"></a>00144 videoFlags |= SDL_GL_DOUBLEBUFFER;
<a name="l00145"></a>00145 videoFlags |= SDL_HWPALETTE;
<a name="l00146"></a>00146 videoFlags |= SDL_RESIZABLE;
<a name="l00147"></a>00147
<a name="l00148"></a>00148 <span class="comment">// Can the surface be stored in memory?</span>
<a name="l00149"></a>00149 <span class="keywordflow">if</span>(videoInfo->hw_available)
<a name="l00150"></a>00150 videoFlags |= SDL_HWSURFACE;
<a name="l00151"></a>00151 <span class="keywordflow">else</span>
<a name="l00152"></a>00152 videoFlags |= SDL_SWSURFACE;
<a name="l00153"></a>00153
<a name="l00154"></a>00154 <span class="comment">// Can we perform blitting on the GPU?</span>
<a name="l00155"></a>00155 <span class="keywordflow">if</span>(videoInfo->blit_hw)
<a name="l00156"></a>00156 videoFlags |= SDL_HWACCEL;
<a name="l00157"></a>00157
<a name="l00158"></a>00158 <span class="comment">// Set up the OpenGL double buffer.</span>
<a name="l00159"></a>00159 SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
<a name="l00160"></a>00160
<a name="l00161"></a>00161 <span class="comment">// Get an SDL surface.</span>
<a name="l00162"></a>00162 <a class="code" href="main_8cpp.html#a2f5cac12e913bcfcff660305bf88dd3b">surface</a> = SDL_SetVideoMode(<a class="code" href="main_8cpp.html#a3482785bd2a4c8b307f9e0b6f54e2c36">SCREEN_WIDTH</a>, <a class="code" href="main_8cpp.html#ab454541ae58bcf6555e8d723b1eb95e7">SCREEN_HEIGHT</a>, <a class="code" href="main_8cpp.html#a8194731fdeea643e725e3a89d2f7ec59">SCREEN_BPP</a>, videoFlags);
<a name="l00163"></a>00163
<a name="l00164"></a>00164 <span class="comment">// Is there an SDL surface?</span>
<a name="l00165"></a>00165 <span class="keywordflow">if</span>(!<a class="code" href="main_8cpp.html#a2f5cac12e913bcfcff660305bf88dd3b">surface</a>) {
<a name="l00166"></a>00166 fprintf( stderr, <span class="stringliteral">"Video mode set failed: %s\n"</span>, SDL_GetError());
<a name="l00167"></a>00167 <a class="code" href="main_8cpp.html#ada2f56ab31a366e16a495936dd004184">Quit</a>(1);
<a name="l00168"></a>00168 }
<a name="l00169"></a>00169
<a name="l00170"></a>00170 <span class="comment">// Initialize OpenGL.</span>
<a name="l00171"></a>00171 <a class="code" href="main_8cpp.html#a583c9b24e82b1015dd307199654d8488">InitGL</a>();
<a name="l00172"></a>00172
<a name="l00173"></a>00173 game.<a class="code" href="class_game.html#a9fe7e8ed1349a7011a2fd240459ce70c">Init</a>();
<a name="l00174"></a>00174 <a class="code" href="class_debug.html#ace75e2aa3105e64f9fc82c537b45135d">Debug::logger</a>-><a class="code" href="class_debug.html#a7f171818a11f4d6b8dee3b44c4d6f0a7">message</a>(<span class="stringliteral">"Game Initialize!"</span>);
<a name="l00175"></a>00175
<a name="l00176"></a>00176 <a class="code" href="class_debug.html#ace75e2aa3105e64f9fc82c537b45135d">Debug::logger</a>-><a class="code" href="class_debug.html#a7f171818a11f4d6b8dee3b44c4d6f0a7">message</a>(<span class="stringliteral">"\n\n-----Engine Initialization Complete-----"</span>);
<a name="l00177"></a>00177 <a class="code" href="class_debug.html#ace75e2aa3105e64f9fc82c537b45135d">Debug::logger</a>-><a class="code" href="class_debug.html#a7f171818a11f4d6b8dee3b44c4d6f0a7">message</a>(<span class="stringliteral">"\n\n-----Logic-----"</span>);
<a name="l00178"></a>00178
<a name="l00179"></a>00179 <span class="keywordflow">while</span>(!done) {
<a name="l00180"></a>00180 <span class="comment">// Time to poll events.</span>
<a name="l00181"></a>00181 <span class="keywordflow">while</span>(SDL_PollEvent(&event)) {
<a name="l00182"></a>00182 <span class="keywordflow">switch</span>(event.type) {
<a name="l00183"></a>00183 <span class="keywordflow">case</span> SDL_VIDEORESIZE:
<a name="l00184"></a>00184 <span class="comment">// Handle resize events.</span>
<a name="l00185"></a>00185 <a class="code" href="main_8cpp.html#a2f5cac12e913bcfcff660305bf88dd3b">surface</a> = SDL_SetVideoMode(event.resize.w, event.resize.h, 16, videoFlags);
<a name="l00186"></a>00186 <span class="keywordflow">if</span>(!<a class="code" href="main_8cpp.html#a2f5cac12e913bcfcff660305bf88dd3b">surface</a>) {
<a name="l00187"></a>00187 <a class="code" href="class_debug.html#ace75e2aa3105e64f9fc82c537b45135d">Debug::logger</a>-><a class="code" href="class_debug.html#a7f171818a11f4d6b8dee3b44c4d6f0a7">message</a>(<span class="stringliteral">"Could not get a surface after resize\n"</span>);
<a name="l00188"></a>00188 <a class="code" href="main_8cpp.html#ada2f56ab31a366e16a495936dd004184">Quit</a>(1);
<a name="l00189"></a>00189 }
<a name="l00190"></a>00190 <a class="code" href="main_8cpp.html#a4fb3c2550b72c4284dbe38ece28944e3">ResizeWindow</a>(event.resize.w, event.resize.h);
<a name="l00191"></a>00191 <span class="keywordflow">break</span>;
<a name="l00192"></a>00192 <span class="keywordflow">case</span> SDL_KEYDOWN:
<a name="l00193"></a>00193 <span class="comment">// handle keydown events.</span>
<a name="l00194"></a>00194 <a class="code" href="main_8cpp.html#a4f3df61842b2672d52d1fa27173bba45">ProcessEvents</a>(&event.key.keysym);
<a name="l00195"></a>00195 <span class="keywordflow">break</span>;
<a name="l00196"></a>00196 <span class="keywordflow">case</span> SDL_QUIT:
<a name="l00197"></a>00197 <span class="comment">// Handle quit events.</span>
<a name="l00198"></a>00198 done = <span class="keyword">true</span>;
<a name="l00199"></a>00199 <span class="keywordflow">break</span>;
<a name="l00200"></a>00200 <span class="keywordflow">default</span>:
<a name="l00201"></a>00201 <span class="keywordflow">break</span>;
<a name="l00202"></a>00202 }
<a name="l00203"></a>00203 <span class="comment">//CreateInput();</span>
<a name="l00204"></a>00204 <span class="comment">//UpdateInput();</span>
<a name="l00205"></a>00205 }
<a name="l00206"></a>00206 <span class="comment">// Render the scene.</span>
<a name="l00207"></a>00207 <span class="keywordtype">float</span> elapsedTime = <a class="code" href="main_8cpp.html#a15fbb2a92b276cacefc25bb930101a9e">GetElapsedSeconds</a>();
<a name="l00208"></a>00208 <span class="comment">//game.ProcessEvents();</span>
<a name="l00209"></a>00209 game.<a class="code" href="class_game.html#a36ea7cbee603b8335d6920cc53b05d7c">Prepare</a>(elapsedTime);
<a name="l00210"></a>00210 game.<a class="code" href="class_game.html#aa19e1d12f3b8823467a8f99f832bc6d7">Render</a>();
<a name="l00211"></a>00211 SDL_GL_SwapBuffers();
<a name="l00212"></a>00212 }
<a name="l00213"></a>00213 game.<a class="code" href="class_game.html#ae98f729272916bf01f7cb1c92ff8136a">Shutdown</a>();
<a name="l00214"></a>00214 <span class="comment">// Clean ourselves up and exit.</span>
<a name="l00215"></a>00215 <a class="code" href="main_8cpp.html#ada2f56ab31a366e16a495936dd004184">Quit</a>(0);
<a name="l00216"></a>00216
<a name="l00217"></a>00217 <span class="comment">// We should never get here.</span>
<a name="l00218"></a>00218 <span class="keywordflow">return</span>(0);
<a name="l00219"></a>00219 }
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