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<div id="projectbrief">Quite simple and lightweight game engine</div>
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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="preprocessor">#define GF_EXPOSE_DRAW</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="preprocessor">#define GF_EXPOSE_TEXTURE</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span> </div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="preprocessor">#include &lt;<a class="code" href="gf__pre_8h.html">gf_pre.h</a>&gt;</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span> </div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment">/* External library */</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="preprocessor">#include &lt;<a class="code" href="gf__opengl_8h.html">gf_opengl.h</a>&gt;</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span> </div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment">/* Interface */</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="preprocessor">#include &lt;<a class="code" href="gf__graphic_8h.html">gf_graphic.h</a>&gt;</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span> </div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="comment">/* Engine */</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="preprocessor">#include &lt;<a class="code" href="gf__draw_8h.html">gf_draw.h</a>&gt;</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#include &lt;<a class="code" href="gf__texture_8h.html">gf_texture.h</a>&gt;</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="preprocessor">#include &lt;<a class="code" href="gf__draw__driver_8h.html">gf_draw_driver.h</a>&gt;</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span> </div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment">/* Standard */</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="preprocessor">#include &lt;stdarg.h&gt;</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> </div>
<div class="foldopen" id="foldopen00020" data-start="{" data-end="}">
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"><a class="line" href="gf__graphic_8h.html#ad35db673e213edbadbfd938138c88a4c"> 20</a></span><span class="keywordtype">void</span> gf_graphic_begin_2d(<a class="code hl_struct" href="structgf__draw__t.html">gf_draw_t</a>* draw) {</div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> glDisable(GL_LIGHTING);</div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> glDisable(GL_DEPTH_TEST);</div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> glMatrixMode(GL_PROJECTION);</div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> glPushMatrix();</div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> glLoadIdentity();</div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> glOrtho(0, draw-&gt;<a class="code hl_variable" href="structgf__draw__t.html#adeb3586537ce39bf94c594dec0348346">width</a>, draw-&gt;<a class="code hl_variable" href="structgf__draw__t.html#ae300bda23f566c186f873c56c5d32a3f">height</a>, 0, -1, 1);</div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> glMatrixMode(GL_MODELVIEW);</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> glPushMatrix();</div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> glLoadIdentity();</div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span>}</div>
</div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> </div>
<div class="foldopen" id="foldopen00032" data-start="{" data-end="}">
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"><a class="line" href="gf__graphic_8h.html#acd5d3047cf76b63b2d1161e4e880f446"> 32</a></span><span class="keywordtype">void</span> gf_graphic_end_2d(<a class="code hl_struct" href="structgf__draw__t.html">gf_draw_t</a>* draw) {</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> glMatrixMode(GL_MODELVIEW);</div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> glPopMatrix();</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> glMatrixMode(GL_PROJECTION);</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> glPopMatrix();</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> glMatrixMode(GL_MODELVIEW);</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> glEnable(GL_DEPTH_TEST);</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> glEnable(GL_LIGHTING);</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span>}</div>
</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> </div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"><a class="line" href="gf__graphic_8h.html#a74f8bf7e2fc346f7d85ecfcea061f3fb"> 42</a></span><span class="keywordtype">void</span> gf_graphic_clear(<a class="code hl_struct" href="structgf__draw__t.html">gf_draw_t</a>* draw) { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT); }</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> </div>
<div class="foldopen" id="foldopen00044" data-start="{" data-end="}">
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"><a class="line" href="gf__graphic_8h.html#a3544db93ed4ed75c8038bc95a39ffa71"> 44</a></span><span class="keywordtype">void</span> gf_graphic_draw_texture_polygon(<a class="code hl_struct" href="structgf__draw__t.html">gf_draw_t</a>* draw, <a class="code hl_struct" href="structgf__texture__t.html">gf_texture_t</a>* texture, <a class="code hl_struct" href="structgf__color__t.html">gf_color_t</a> color, <span class="keywordtype">int</span> dim, <span class="keywordtype">int</span> npair, ...) {</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> <span class="keywordtype">double</span> tw = (double)texture-&gt;<a class="code hl_variable" href="structgf__texture__t.html#abfc99c0749d88e9b04a3ee0e4e5e2854">width</a> / texture-&gt;<a class="code hl_variable" href="structgf__texture__t.html#a0640d6993c4de94f7e51374c12ef7e35">internal_width</a>;</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <span class="keywordtype">double</span> th = (double)texture-&gt;<a class="code hl_variable" href="structgf__texture__t.html#a7746f1b9059b336d89155945fc48c027">height</a> / texture-&gt;<a class="code hl_variable" href="structgf__texture__t.html#a3de5592e9caad1edfd93a45644a508e5">internal_height</a>;</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <span class="keywordtype">int</span> i;</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> va_list va;</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> va_start(va, npair);</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> </div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> <span class="keywordflow">if</span>(dim == 2) gf_graphic_begin_2d(draw);</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> gf_draw_driver_begin_texture_2d(draw, texture);</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> </div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> gf_draw_driver_set_color(draw, color);</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> glBegin(GL_TRIANGLE_FAN);</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> </div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> <span class="keywordflow">for</span>(i = 0; i &lt; npair; i++) {</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> <span class="keywordtype">float</span> tx = va_arg(va, <span class="keywordtype">double</span>) * tw;</div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <span class="keywordtype">float</span> ty = va_arg(va, <span class="keywordtype">double</span>) * th;</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> <span class="keywordtype">float</span> x = va_arg(va, <span class="keywordtype">double</span>);</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="keywordtype">float</span> y = va_arg(va, <span class="keywordtype">double</span>);</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> glTexCoord2f(tx, ty);</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> <span class="keywordflow">if</span>(dim == <a class="code hl_define" href="gf__graphic_8h.html#ab0a76f61b9510881b842dbba4b0b54c0">GF_GRAPHIC_2D</a>) {</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> glVertex2f(x, y);</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> } <span class="keywordflow">else</span> <span class="keywordflow">if</span>(dim == <a class="code hl_define" href="gf__graphic_8h.html#a0b9f704231aa067e58c6a8e7a42afdcf">GF_GRAPHIC_3D</a>) {</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <span class="keywordtype">float</span> z = va_arg(va, <span class="keywordtype">double</span>);</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> glVertex3f(x, y, z);</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> }</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> }</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> </div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> glEnd();</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> </div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> gf_draw_driver_end_texture_2d(draw);</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> <span class="keywordflow">if</span>(dim == 2) gf_graphic_end_2d(draw);</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> </div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> va_end(va);</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span>}</div>
</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> </div>
<div class="foldopen" id="foldopen00079" data-start="{" data-end="}">
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"><a class="line" href="gf__graphic_8h.html#a766c4389dc5eac084da75407858bcb43"> 79</a></span><span class="keywordtype">void</span> gf_graphic_fill_polygon(<a class="code hl_struct" href="structgf__draw__t.html">gf_draw_t</a>* draw, <a class="code hl_struct" href="structgf__color__t.html">gf_color_t</a> color, <span class="keywordtype">int</span> dim, <span class="keywordtype">int</span> npair, ...) {</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> <span class="keywordtype">int</span> i;</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> va_list va;</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> va_start(va, npair);</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> </div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> gf_graphic_begin_2d(draw);</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> </div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> gf_draw_driver_set_color(draw, color);</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> glBegin(GL_TRIANGLE_FAN);</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> </div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> <span class="keywordflow">for</span>(i = 0; i &lt; npair; i++) {</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> <span class="keywordtype">float</span> x = va_arg(va, <span class="keywordtype">double</span>);</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="keywordtype">float</span> y = va_arg(va, <span class="keywordtype">double</span>);</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> <span class="keywordflow">if</span>(dim == <a class="code hl_define" href="gf__graphic_8h.html#ab0a76f61b9510881b842dbba4b0b54c0">GF_GRAPHIC_2D</a>) {</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> glVertex2f(x, y);</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> } <span class="keywordflow">else</span> <span class="keywordflow">if</span>(dim == <a class="code hl_define" href="gf__graphic_8h.html#a0b9f704231aa067e58c6a8e7a42afdcf">GF_GRAPHIC_3D</a>) {</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> <span class="keywordtype">float</span> z = va_arg(va, <span class="keywordtype">double</span>);</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> glVertex3f(x, y, z);</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> }</div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> }</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> </div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> glEnd();</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> gf_graphic_end_2d(draw);</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> </div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> va_end(va);</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span>}</div>
</div>
<div class="ttc" id="agf__draw_8h_html"><div class="ttname"><a href="gf__draw_8h.html">gf_draw.h</a></div><div class="ttdoc">Drawing interface.</div></div>
<div class="ttc" id="agf__draw__driver_8h_html"><div class="ttname"><a href="gf__draw__driver_8h.html">gf_draw_driver.h</a></div><div class="ttdoc">Drawing driver.</div></div>
<div class="ttc" id="agf__graphic_8h_html"><div class="ttname"><a href="gf__graphic_8h.html">gf_graphic.h</a></div><div class="ttdoc">Graphic interface.</div></div>
<div class="ttc" id="agf__graphic_8h_html_a0b9f704231aa067e58c6a8e7a42afdcf"><div class="ttname"><a href="gf__graphic_8h.html#a0b9f704231aa067e58c6a8e7a42afdcf">GF_GRAPHIC_3D</a></div><div class="ttdeci">#define GF_GRAPHIC_3D</div><div class="ttdoc">Dimension parameter for 3D.</div><div class="ttdef"><b>Definition</b> <a href="gf__graphic_8h_source.html#l00044">gf_graphic.h:44</a></div></div>
<div class="ttc" id="agf__graphic_8h_html_ab0a76f61b9510881b842dbba4b0b54c0"><div class="ttname"><a href="gf__graphic_8h.html#ab0a76f61b9510881b842dbba4b0b54c0">GF_GRAPHIC_2D</a></div><div class="ttdeci">#define GF_GRAPHIC_2D</div><div class="ttdoc">Dimension parameter for 2D.</div><div class="ttdef"><b>Definition</b> <a href="gf__graphic_8h_source.html#l00038">gf_graphic.h:38</a></div></div>
<div class="ttc" id="agf__opengl_8h_html"><div class="ttname"><a href="gf__opengl_8h.html">gf_opengl.h</a></div><div class="ttdoc">OpenGL headers.</div></div>
<div class="ttc" id="agf__pre_8h_html"><div class="ttname"><a href="gf__pre_8h.html">gf_pre.h</a></div><div class="ttdoc">Required headers before anything.</div></div>
<div class="ttc" id="agf__texture_8h_html"><div class="ttname"><a href="gf__texture_8h.html">gf_texture.h</a></div><div class="ttdoc">Texture.</div></div>
<div class="ttc" id="astructgf__color__t_html"><div class="ttname"><a href="structgf__color__t.html">gf_color_t</a></div><div class="ttdoc">Color.</div><div class="ttdef"><b>Definition</b> <a href="graphic_8h_source.html#l00042">graphic.h:42</a></div></div>
<div class="ttc" id="astructgf__draw__t_html"><div class="ttname"><a href="structgf__draw__t.html">gf_draw_t</a></div><div class="ttdoc">Drawing interface.</div><div class="ttdef"><b>Definition</b> <a href="draw_8h_source.html#l00102">draw.h:102</a></div></div>
<div class="ttc" id="astructgf__draw__t_html_adeb3586537ce39bf94c594dec0348346"><div class="ttname"><a href="structgf__draw__t.html#adeb3586537ce39bf94c594dec0348346">gf_draw_t::width</a></div><div class="ttdeci">int width</div><div class="ttdoc">Width of window.</div><div class="ttdef"><b>Definition</b> <a href="draw_8h_source.html#l00102">draw.h:102</a></div></div>
<div class="ttc" id="astructgf__draw__t_html_ae300bda23f566c186f873c56c5d32a3f"><div class="ttname"><a href="structgf__draw__t.html#ae300bda23f566c186f873c56c5d32a3f">gf_draw_t::height</a></div><div class="ttdeci">int height</div><div class="ttdoc">Height of window.</div><div class="ttdef"><b>Definition</b> <a href="draw_8h_source.html#l00102">draw.h:102</a></div></div>
<div class="ttc" id="astructgf__texture__t_html"><div class="ttname"><a href="structgf__texture__t.html">gf_texture_t</a></div><div class="ttdoc">Texture.</div><div class="ttdef"><b>Definition</b> <a href="texture_8h_source.html#l00047">texture.h:47</a></div></div>
<div class="ttc" id="astructgf__texture__t_html_a0640d6993c4de94f7e51374c12ef7e35"><div class="ttname"><a href="structgf__texture__t.html#a0640d6993c4de94f7e51374c12ef7e35">gf_texture_t::internal_width</a></div><div class="ttdeci">int internal_width</div><div class="ttdoc">Internal width of texture.</div><div class="ttdef"><b>Definition</b> <a href="texture_8h_source.html#l00047">texture.h:47</a></div></div>
<div class="ttc" id="astructgf__texture__t_html_a3de5592e9caad1edfd93a45644a508e5"><div class="ttname"><a href="structgf__texture__t.html#a3de5592e9caad1edfd93a45644a508e5">gf_texture_t::internal_height</a></div><div class="ttdeci">int internal_height</div><div class="ttdoc">Internal height of texture.</div><div class="ttdef"><b>Definition</b> <a href="texture_8h_source.html#l00047">texture.h:47</a></div></div>
<div class="ttc" id="astructgf__texture__t_html_a7746f1b9059b336d89155945fc48c027"><div class="ttname"><a href="structgf__texture__t.html#a7746f1b9059b336d89155945fc48c027">gf_texture_t::height</a></div><div class="ttdeci">int height</div><div class="ttdoc">Height of texture.</div><div class="ttdef"><b>Definition</b> <a href="texture_8h_source.html#l00047">texture.h:47</a></div></div>
<div class="ttc" id="astructgf__texture__t_html_abfc99c0749d88e9b04a3ee0e4e5e2854"><div class="ttname"><a href="structgf__texture__t.html#abfc99c0749d88e9b04a3ee0e4e5e2854">gf_texture_t::width</a></div><div class="ttdeci">int width</div><div class="ttdoc">Width of texture.</div><div class="ttdef"><b>Definition</b> <a href="texture_8h_source.html#l00047">texture.h:47</a></div></div>
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