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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#ifndef ENTT_ENTITY_SPARSE_SET_HPP</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#define ENTT_ENTITY_SPARSE_SET_HPP</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> </div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> </div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor">#include <algorithm></span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#include <iterator></span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include <numeric></span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#include <utility></span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include <vector></span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include <cstddef></span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <cassert></span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include <type_traits></span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "entt_traits.hpp"</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="keyword">namespace </span><a class="code" href="namespaceentt.html">entt</a> {</div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="keyword">template</span><<span class="keyword">typename</span>...></div><div class="line"><a name="l00026"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet.html"> 26</a></span> <span class="keyword">class </span><a class="code" href="classentt_1_1SparseSet.html">SparseSet</a>;</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="keyword">template</span><<span class="keyword">typename</span> Entity></div><div class="line"><a name="l00057"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_01_4.html"> 57</a></span> <span class="keyword">class </span><a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html">SparseSet<Entity></a> {</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keyword">using</span> <a class="code" href="structentt_1_1entt__traits.html">traits_type</a> = <a class="code" href="structentt_1_1entt__traits.html">entt_traits<Entity></a>;</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> </div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keyword">struct </span>Iterator <span class="keyword">final</span> {</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keyword">using</span> difference_type = std::size_t;</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keyword">using</span> value_type = Entity;</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keyword">using</span> pointer = value_type *;</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keyword">using</span> reference = value_type;</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keyword">using</span> iterator_category = std::input_iterator_tag;</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span> </div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  Iterator(<span class="keyword">const</span> std::vector<value_type> &direct, std::size_t pos)</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  : direct{direct}, pos{pos}</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  {}</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  Iterator & operator++() noexcept {</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">return</span> --pos, *<span class="keyword">this</span>;</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  }</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  Iterator operator++(<span class="keywordtype">int</span>) noexcept {</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  Iterator orig = *<span class="keyword">this</span>;</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordflow">return</span> ++(*this), orig;</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  }</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  Iterator & operator+=(difference_type value) noexcept {</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  pos -= value;</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  }</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span> </div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  Iterator operator+(difference_type value) noexcept {</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">return</span> Iterator{direct, pos-value};</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  }</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span> </div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> Iterator &other) <span class="keyword">const</span> noexcept {</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">return</span> other.pos == pos;</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  }</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span> </div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordtype">bool</span> <a class="code" href="namespaceentt.html#a18e1a7cdfcb0c0ba075e0beeda95285f">operator!=</a>(<span class="keyword">const</span> Iterator &other) <span class="keyword">const</span> noexcept {</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordflow">return</span> !(*<span class="keyword">this</span> == other);</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  }</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span> </div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  reference operator*() <span class="keyword">const</span> noexcept {</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keywordflow">return</span> direct[pos-1];</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  }</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keyword">const</span> std::vector<value_type> &direct;</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  std::size_t pos;</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  };</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> </div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keyword">static</span> constexpr Entity in_use = (Entity{1} << traits_type::entity_shift);</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00110"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a7d36e852257a965a9a0ed3fb636433e2"> 110</a></span>  <span class="keyword">using</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a7d36e852257a965a9a0ed3fb636433e2">entity_type</a> = Entity;</div><div class="line"><a name="l00112"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a20c218a69cf339371251ffa5580d7aa0"> 112</a></span>  <span class="keyword">using</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a20c218a69cf339371251ffa5580d7aa0">pos_type</a> = <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a7d36e852257a965a9a0ed3fb636433e2">entity_type</a>;</div><div class="line"><a name="l00114"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_01_4.html#ab81c48dcee7a1104ee82794613ee7ed2"> 114</a></span>  <span class="keyword">using</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#ab81c48dcee7a1104ee82794613ee7ed2">size_type</a> = std::size_t;</div><div class="line"><a name="l00116"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a1ad77aed1e49af60b61044c996969b9a"> 116</a></span>  <span class="keyword">using</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a1ad77aed1e49af60b61044c996969b9a">iterator_type</a> = Iterator;</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span> </div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <a class="code" href="classentt_1_1SparseSet.html">SparseSet</a>() noexcept = default;</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span> </div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  virtual ~<a class="code" href="classentt_1_1SparseSet.html">SparseSet</a>() noexcept = default;</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span> </div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <a class="code" href="classentt_1_1SparseSet.html">SparseSet</a>(const <a class="code" href="classentt_1_1SparseSet.html">SparseSet</a> &) = delete;</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <a class="code" href="classentt_1_1SparseSet.html">SparseSet</a>(<a class="code" href="classentt_1_1SparseSet.html">SparseSet</a> &&) = default;</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span> </div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <a class="code" href="classentt_1_1SparseSet.html">SparseSet</a> & operator=(const <a class="code" href="classentt_1_1SparseSet.html">SparseSet</a> &) = delete;</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <a class="code" href="classentt_1_1SparseSet.html">SparseSet</a> & operator=(<a class="code" href="classentt_1_1SparseSet.html">SparseSet</a> &&) = default;</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span> </div><div class="line"><a name="l00142"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a56178563cf37f6066828b370e5747541"> 142</a></span>  <span class="keywordtype">void</span> reserve(<a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#ab81c48dcee7a1104ee82794613ee7ed2">size_type</a> cap) {</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  direct.reserve(cap);</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  }</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span> </div><div class="line"><a name="l00156"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a7f433ca12b49abcfb76fd9ff524bc518"> 156</a></span>  <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#ab81c48dcee7a1104ee82794613ee7ed2">size_type</a> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a7f433ca12b49abcfb76fd9ff524bc518">extent</a>() const noexcept {</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordflow">return</span> reverse.size();</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  }</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span> </div><div class="line"><a name="l00170"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a337360e8d0f44c373acef65328a3e9f8"> 170</a></span>  <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#ab81c48dcee7a1104ee82794613ee7ed2">size_type</a> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a337360e8d0f44c373acef65328a3e9f8">size</a>() const noexcept {</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordflow">return</span> direct.size();</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  }</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span> </div><div class="line"><a name="l00178"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a9d6b9c98d2645d821c81ff7d3586ca27"> 178</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a9d6b9c98d2645d821c81ff7d3586ca27">empty</a>() const noexcept {</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keywordflow">return</span> direct.empty();</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  }</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span> </div><div class="line"><a name="l00197"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a6e4dda542e3d725dd963dea57bfb9cb1"> 197</a></span>  <span class="keyword">const</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a7d36e852257a965a9a0ed3fb636433e2">entity_type</a> * <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a6e4dda542e3d725dd963dea57bfb9cb1">data</a>() const noexcept {</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordflow">return</span> direct.data();</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  }</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span> </div><div class="line"><a name="l00213"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a1efc9899f2ede4fd8ea1840a7ed8dbc7"> 213</a></span>  <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a1ad77aed1e49af60b61044c996969b9a">iterator_type</a> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a1efc9899f2ede4fd8ea1840a7ed8dbc7">begin</a>() const noexcept {</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="keywordflow">return</span> Iterator{direct, direct.size()};</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  }</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span> </div><div class="line"><a name="l00230"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a2c54395d55054437bfe179718e102181"> 230</a></span>  <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a1ad77aed1e49af60b61044c996969b9a">iterator_type</a> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a2c54395d55054437bfe179718e102181">end</a>() const noexcept {</div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="keywordflow">return</span> Iterator{direct, 0};</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  }</div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span> </div><div class="line"><a name="l00239"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a1b6a33e6e65345bf028877efa74c5a5e"> 239</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a1b6a33e6e65345bf028877efa74c5a5e">has</a>(<a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a7d36e852257a965a9a0ed3fb636433e2">entity_type</a> entity) <span class="keyword">const</span> noexcept {</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="keyword">const</span> <span class="keyword">auto</span> pos = <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#ab81c48dcee7a1104ee82794613ee7ed2">size_type</a>(entity & traits_type::entity_mask);</div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="comment">// the in-use control bit permits to avoid accessing the direct vector</span></div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keywordflow">return</span> (pos < reverse.size()) && (reverse[pos] & in_use);</div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  }</div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span> </div><div class="line"><a name="l00262"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a498d79ccde6f59bce3527cd8a67e8db3"> 262</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a498d79ccde6f59bce3527cd8a67e8db3">fast</a>(<a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a7d36e852257a965a9a0ed3fb636433e2">entity_type</a> entity) <span class="keyword">const</span> noexcept {</div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <span class="keyword">const</span> <span class="keyword">auto</span> pos = <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#ab81c48dcee7a1104ee82794613ee7ed2">size_type</a>(entity & traits_type::entity_mask);</div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  assert(pos < reverse.size());</div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="comment">// the in-use control bit permits to avoid accessing the direct vector</span></div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="keywordflow">return</span> (reverse[pos] & in_use);</div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  }</div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span> </div><div class="line"><a name="l00281"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a7aa0a2c4f286228fc47d32761552bc13"> 281</a></span>  <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a20c218a69cf339371251ffa5580d7aa0">pos_type</a> <span class="keyword">get</span>(<a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a7d36e852257a965a9a0ed3fb636433e2">entity_type</a> entity) <span class="keyword">const</span> noexcept {</div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  assert(has(entity));</div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <span class="keyword">const</span> <span class="keyword">auto</span> <a class="code" href="namespaceentt.html">entt</a> = entity & traits_type::entity_mask;</div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <span class="comment">// we must get rid of the in-use bit for it's not part of the position</span></div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="keywordflow">return</span> reverse[<a class="code" href="namespaceentt.html">entt</a>] & traits_type::entity_mask;</div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  }</div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span> </div><div class="line"><a name="l00299"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_01_4.html#adb65da9a09f41dcf6ec433066a7891c3"> 299</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#adb65da9a09f41dcf6ec433066a7891c3">construct</a>(<a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a7d36e852257a965a9a0ed3fb636433e2">entity_type</a> entity) {</div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  assert(!has(entity));</div><div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  <span class="keyword">const</span> <span class="keyword">auto</span> pos = <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#ab81c48dcee7a1104ee82794613ee7ed2">size_type</a>(entity & traits_type::entity_mask);</div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span> </div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  <span class="keywordflow">if</span>(!(pos < reverse.size())) {</div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  reverse.resize(pos+1, <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a20c218a69cf339371251ffa5580d7aa0">pos_type</a>{});</div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  }</div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span> </div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  <span class="comment">// we exploit the fact that pos_type is equal to entity_type and pos has</span></div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <span class="comment">// traits_type::version_mask bits unused we can use to mark it as in-use</span></div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  reverse[pos] = <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a20c218a69cf339371251ffa5580d7aa0">pos_type</a>(direct.size()) | in_use;</div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  direct.emplace_back(entity);</div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  }</div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span> </div><div class="line"><a name="l00324"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_01_4.html#ab4be1be8435da50621373c0bd737a1e8"> 324</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#ab4be1be8435da50621373c0bd737a1e8">destroy</a>(<a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a7d36e852257a965a9a0ed3fb636433e2">entity_type</a> entity) {</div><div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  assert(has(entity));</div><div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  <span class="keyword">const</span> <span class="keyword">auto</span> <a class="code" href="namespaceentt.html">entt</a> = entity & traits_type::entity_mask;</div><div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="keyword">const</span> <span class="keyword">auto</span> back = direct.back() & traits_type::entity_mask;</div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <span class="comment">// we must get rid of the in-use bit for it's not part of the position</span></div><div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <span class="keyword">const</span> <span class="keyword">auto</span> pos = reverse[<a class="code" href="namespaceentt.html">entt</a>] & traits_type::entity_mask;</div><div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  reverse[back] = reverse[<a class="code" href="namespaceentt.html">entt</a>];</div><div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  reverse[<a class="code" href="namespaceentt.html">entt</a>] = pos;</div><div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <span class="comment">// swapping isn't required here, we are getting rid of the last element</span></div><div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  direct[pos] = direct.back();</div><div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  direct.pop_back();</div><div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  }</div><div class="line"><a name="l00336"></a><span class="lineno"> 336</span> </div><div class="line"><a name="l00352"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_01_4.html#af122c1668ab1efbe0eca5792e9bae434"> 352</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#af122c1668ab1efbe0eca5792e9bae434">swap</a>(<a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a20c218a69cf339371251ffa5580d7aa0">pos_type</a> lhs, <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a20c218a69cf339371251ffa5580d7aa0">pos_type</a> rhs) noexcept {</div><div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  assert(lhs < direct.size());</div><div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  assert(rhs < direct.size());</div><div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  <span class="keyword">const</span> <span class="keyword">auto</span> src = direct[lhs] & traits_type::entity_mask;</div><div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  <span class="keyword">const</span> <span class="keyword">auto</span> dst = direct[rhs] & traits_type::entity_mask;</div><div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  std::swap(reverse[src], reverse[dst]);</div><div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  std::swap(direct[lhs], direct[rhs]);</div><div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  }</div><div class="line"><a name="l00360"></a><span class="lineno"> 360</span> </div><div class="line"><a name="l00380"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a62cf2531d240e6007b2f8397670701f7"> 380</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a62cf2531d240e6007b2f8397670701f7">respect</a>(<span class="keyword">const</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html">SparseSet<Entity></a> &other) noexcept {</div><div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  <span class="keyword">auto</span> from = other.begin();</div><div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  <span class="keyword">auto</span> to = other.end();</div><div class="line"><a name="l00383"></a><span class="lineno"> 383</span> </div><div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a20c218a69cf339371251ffa5580d7aa0">pos_type</a> pos = direct.size() - 1;</div><div class="line"><a name="l00385"></a><span class="lineno"> 385</span> </div><div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  <span class="keywordflow">while</span>(pos && from != to) {</div><div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  <span class="keywordflow">if</span>(has(*from)) {</div><div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  <span class="keywordflow">if</span>(*from != direct[pos]) {</div><div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  swap(pos, <span class="keyword">get</span>(*from));</div><div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  }</div><div class="line"><a name="l00391"></a><span class="lineno"> 391</span> </div><div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  --pos;</div><div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  }</div><div class="line"><a name="l00394"></a><span class="lineno"> 394</span> </div><div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  ++from;</div><div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  }</div><div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  }</div><div class="line"><a name="l00398"></a><span class="lineno"> 398</span> </div><div class="line"><a name="l00402"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_01_4.html#ad1c62c65aeb0112e688f05d8f641cdab"> 402</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#ad1c62c65aeb0112e688f05d8f641cdab">reset</a>() {</div><div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  reverse.clear();</div><div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  direct.clear();</div><div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  }</div><div class="line"><a name="l00406"></a><span class="lineno"> 406</span> </div><div class="line"><a name="l00407"></a><span class="lineno"> 407</span> <span class="keyword">private</span>:</div><div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  std::vector<pos_type> reverse;</div><div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  std::vector<entity_type> direct;</div><div class="line"><a name="l00410"></a><span class="lineno"> 410</span> };</div><div class="line"><a name="l00411"></a><span class="lineno"> 411</span> </div><div class="line"><a name="l00412"></a><span class="lineno"> 412</span> </div><div class="line"><a name="l00435"></a><span class="lineno"> 435</span> <span class="keyword">template</span><<span class="keyword">typename</span> Entity, <span class="keyword">typename</span> Type></div><div class="line"><a name="l00436"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html"> 436</a></span> <span class="keyword">class </span><a class="code" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html">SparseSet<Entity, Type></a>: <span class="keyword">public</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html">SparseSet<Entity></a> {</div><div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  <span class="keyword">using</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html">underlying_type</a> = <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html">SparseSet<Entity></a>;</div><div class="line"><a name="l00438"></a><span class="lineno"> 438</span> </div><div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  <span class="keyword">struct </span>Iterator <span class="keyword">final</span> {</div><div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  <span class="keyword">using</span> difference_type = std::size_t;</div><div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  <span class="keyword">using</span> value_type = Type;</div><div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  <span class="keyword">using</span> pointer = value_type *;</div><div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  <span class="keyword">using</span> reference = value_type &;</div><div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  <span class="keyword">using</span> iterator_category = std::input_iterator_tag;</div><div class="line"><a name="l00445"></a><span class="lineno"> 445</span> </div><div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  Iterator(std::vector<value_type> &instances, std::size_t pos)</div><div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  : instances{instances}, pos{pos}</div><div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  {}</div><div class="line"><a name="l00449"></a><span class="lineno"> 449</span> </div><div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  Iterator & operator++() noexcept {</div><div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  <span class="keywordflow">return</span> --pos, *<span class="keyword">this</span>;</div><div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  }</div><div class="line"><a name="l00453"></a><span class="lineno"> 453</span> </div><div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  Iterator operator++(<span class="keywordtype">int</span>) noexcept {</div><div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  Iterator orig = *<span class="keyword">this</span>;</div><div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  <span class="keywordflow">return</span> ++(*this), orig;</div><div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  }</div><div class="line"><a name="l00458"></a><span class="lineno"> 458</span> </div><div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  Iterator & operator+=(difference_type value) noexcept {</div><div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  pos -= value;</div><div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  }</div><div class="line"><a name="l00463"></a><span class="lineno"> 463</span> </div><div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  Iterator operator+(difference_type value) noexcept {</div><div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  <span class="keywordflow">return</span> Iterator{instances, pos-value};</div><div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  }</div><div class="line"><a name="l00467"></a><span class="lineno"> 467</span> </div><div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> Iterator &other) <span class="keyword">const</span> noexcept {</div><div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  <span class="keywordflow">return</span> other.pos == pos;</div><div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  }</div><div class="line"><a name="l00471"></a><span class="lineno"> 471</span> </div><div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  <span class="keywordtype">bool</span> <a class="code" href="namespaceentt.html#a18e1a7cdfcb0c0ba075e0beeda95285f">operator!=</a>(<span class="keyword">const</span> Iterator &other) <span class="keyword">const</span> noexcept {</div><div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  <span class="keywordflow">return</span> !(*<span class="keyword">this</span> == other);</div><div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  }</div><div class="line"><a name="l00475"></a><span class="lineno"> 475</span> </div><div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  reference operator*() noexcept {</div><div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  <span class="keywordflow">return</span> instances[pos-1];</div><div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  }</div><div class="line"><a name="l00479"></a><span class="lineno"> 479</span> </div><div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  pointer operator->() noexcept {</div><div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  <span class="keywordflow">return</span> &instances.data()[pos-1];</div><div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  }</div><div class="line"><a name="l00483"></a><span class="lineno"> 483</span> </div><div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  std::vector<value_type> &instances;</div><div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  std::size_t pos;</div><div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  };</div><div class="line"><a name="l00488"></a><span class="lineno"> 488</span> </div><div class="line"><a name="l00489"></a><span class="lineno"> 489</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00491"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#af7db79dfb4e031a63fa526d4f7d54915"> 491</a></span>  <span class="keyword">using</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#af7db79dfb4e031a63fa526d4f7d54915">object_type</a> = Type;</div><div class="line"><a name="l00493"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#afe382e2d5c8769fb3d924e1a357cf9b0"> 493</a></span>  <span class="keyword">using</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a7d36e852257a965a9a0ed3fb636433e2">entity_type</a> = <span class="keyword">typename</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a7d36e852257a965a9a0ed3fb636433e2">underlying_type::entity_type</a>;</div><div class="line"><a name="l00495"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#ad161a395ca3979154a333520662c7737"> 495</a></span>  <span class="keyword">using</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a20c218a69cf339371251ffa5580d7aa0">pos_type</a> = <span class="keyword">typename</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a20c218a69cf339371251ffa5580d7aa0">underlying_type::pos_type</a>;</div><div class="line"><a name="l00497"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#a27a88e2bb0822de41131741d9ffcded5"> 497</a></span>  <span class="keyword">using</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#ab81c48dcee7a1104ee82794613ee7ed2">size_type</a> = <span class="keyword">typename</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#ab81c48dcee7a1104ee82794613ee7ed2">underlying_type::size_type</a>;</div><div class="line"><a name="l00499"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#ab2947e246282a5520213f7baf7b58f97"> 499</a></span>  <span class="keyword">using</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a1ad77aed1e49af60b61044c996969b9a">iterator_type</a> = Iterator;</div><div class="line"><a name="l00500"></a><span class="lineno"> 500</span> </div><div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  <a class="code" href="classentt_1_1SparseSet.html">SparseSet</a>() noexcept = default;</div><div class="line"><a name="l00503"></a><span class="lineno"> 503</span> </div><div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  <a class="code" href="classentt_1_1SparseSet.html">SparseSet</a>(const <a class="code" href="classentt_1_1SparseSet.html">SparseSet</a> &) = delete;</div><div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  <a class="code" href="classentt_1_1SparseSet.html">SparseSet</a>(<a class="code" href="classentt_1_1SparseSet.html">SparseSet</a> &&) = default;</div><div class="line"><a name="l00508"></a><span class="lineno"> 508</span> </div><div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  <a class="code" href="classentt_1_1SparseSet.html">SparseSet</a> & operator=(const <a class="code" href="classentt_1_1SparseSet.html">SparseSet</a> &) = delete;</div><div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  <a class="code" href="classentt_1_1SparseSet.html">SparseSet</a> & operator=(<a class="code" href="classentt_1_1SparseSet.html">SparseSet</a> &&) = default;</div><div class="line"><a name="l00513"></a><span class="lineno"> 513</span> </div><div class="line"><a name="l00522"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#a7918956bd501e339982cc5ad21623788"> 522</a></span>  <span class="keywordtype">void</span> reserve(<a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#ab81c48dcee7a1104ee82794613ee7ed2">size_type</a> cap) {</div><div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  underlying_type::reserve(cap);</div><div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  instances.reserve(cap);</div><div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  }</div><div class="line"><a name="l00526"></a><span class="lineno"> 526</span> </div><div class="line"><a name="l00542"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#aafa311b5b7379150782d94dffdbab959"> 542</a></span>  <span class="keyword">const</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#af7db79dfb4e031a63fa526d4f7d54915">object_type</a> * <a class="code" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#aafa311b5b7379150782d94dffdbab959">raw</a>() const noexcept {</div><div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  <span class="keywordflow">return</span> instances.data();</div><div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  }</div><div class="line"><a name="l00545"></a><span class="lineno"> 545</span> </div><div class="line"><a name="l00561"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#ac64be22bc7dcb2498257dccbbcfa004f"> 561</a></span>  <a class="code" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#af7db79dfb4e031a63fa526d4f7d54915">object_type</a> * <a class="code" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#ac64be22bc7dcb2498257dccbbcfa004f">raw</a>() noexcept {</div><div class="line"><a name="l00562"></a><span class="lineno"> 562</span>  <span class="keywordflow">return</span> instances.data();</div><div class="line"><a name="l00563"></a><span class="lineno"> 563</span>  }</div><div class="line"><a name="l00564"></a><span class="lineno"> 564</span> </div><div class="line"><a name="l00577"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#ae94011eb155429b9d03d5bfb06effe4d"> 577</a></span>  <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a1ad77aed1e49af60b61044c996969b9a">iterator_type</a> <a class="code" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#ae94011eb155429b9d03d5bfb06effe4d">begin</a>() noexcept {</div><div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  <span class="keywordflow">return</span> Iterator{instances, instances.size()};</div><div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  }</div><div class="line"><a name="l00580"></a><span class="lineno"> 580</span> </div><div class="line"><a name="l00595"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#ac9f9d30e69502cff54f4c0231060cd53"> 595</a></span>  <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a1ad77aed1e49af60b61044c996969b9a">iterator_type</a> <a class="code" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#ac9f9d30e69502cff54f4c0231060cd53">end</a>() noexcept {</div><div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  <span class="keywordflow">return</span> Iterator{instances, 0};</div><div class="line"><a name="l00597"></a><span class="lineno"> 597</span>  }</div><div class="line"><a name="l00598"></a><span class="lineno"> 598</span> </div><div class="line"><a name="l00611"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#ad24ca11a0ce0be4775978c3a06aed24b"> 611</a></span>  <span class="keyword">const</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#af7db79dfb4e031a63fa526d4f7d54915">object_type</a> & <span class="keyword">get</span>(<a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a7d36e852257a965a9a0ed3fb636433e2">entity_type</a> entity) <span class="keyword">const</span> noexcept {</div><div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <span class="keywordflow">return</span> instances[underlying_type::get(entity)];</div><div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  }</div><div class="line"><a name="l00614"></a><span class="lineno"> 614</span> </div><div class="line"><a name="l00627"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#acc051a79f32ee11605c5b61d76e66ef1"> 627</a></span>  <a class="code" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#af7db79dfb4e031a63fa526d4f7d54915">object_type</a> & <span class="keyword">get</span>(<a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a7d36e852257a965a9a0ed3fb636433e2">entity_type</a> entity) noexcept {</div><div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  <span class="keywordflow">return</span> <span class="keyword">const_cast<</span><a class="code" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#af7db79dfb4e031a63fa526d4f7d54915">object_type</a> &<span class="keyword">></span>(<span class="keyword">const_cast<</span><span class="keyword">const </span><a class="code" href="classentt_1_1SparseSet.html">SparseSet</a> *<span class="keyword">></span>(<span class="keyword">this</span>)-><span class="keyword">get</span>(entity));</div><div class="line"><a name="l00629"></a><span class="lineno"> 629</span>  }</div><div class="line"><a name="l00630"></a><span class="lineno"> 630</span> </div><div class="line"><a name="l00651"></a><span class="lineno"> 651</span>  <span class="keyword">template</span><<span class="keyword">typename</span>... Args></div><div class="line"><a name="l00652"></a><span class="lineno"> 652</span>  std::enable_if_t<std::is_constructible<Type, Args...>::value, <a class="code" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#af7db79dfb4e031a63fa526d4f7d54915">object_type</a> &></div><div class="line"><a name="l00653"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#a54631df2a6cca96a25ceea440dda370c"> 653</a></span>  <a class="code" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#a54631df2a6cca96a25ceea440dda370c">construct</a>(<a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a7d36e852257a965a9a0ed3fb636433e2">entity_type</a> entity, Args &&... args) {</div><div class="line"><a name="l00654"></a><span class="lineno"> 654</span>  underlying_type::construct(entity);</div><div class="line"><a name="l00655"></a><span class="lineno"> 655</span>  instances.emplace_back(std::forward<Args>(args)...);</div><div class="line"><a name="l00656"></a><span class="lineno"> 656</span>  <span class="keywordflow">return</span> instances.back();</div><div class="line"><a name="l00657"></a><span class="lineno"> 657</span>  }</div><div class="line"><a name="l00658"></a><span class="lineno"> 658</span> </div><div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  <span class="keyword">template</span><<span class="keyword">typename</span>... Args></div><div class="line"><a name="l00680"></a><span class="lineno"> 680</span>  std::enable_if_t<!std::is_constructible<Type, Args...>::value, <a class="code" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#af7db79dfb4e031a63fa526d4f7d54915">object_type</a> &></div><div class="line"><a name="l00681"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#a63142a81c21687b8c98058fe29cd86b6"> 681</a></span>  <a class="code" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#a63142a81c21687b8c98058fe29cd86b6">construct</a>(<a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a7d36e852257a965a9a0ed3fb636433e2">entity_type</a> entity, Args &&... args) {</div><div class="line"><a name="l00682"></a><span class="lineno"> 682</span>  underlying_type::construct(entity);</div><div class="line"><a name="l00683"></a><span class="lineno"> 683</span>  instances.emplace_back(Type{std::forward<Args>(args)...});</div><div class="line"><a name="l00684"></a><span class="lineno"> 684</span>  <span class="keywordflow">return</span> instances.back();</div><div class="line"><a name="l00685"></a><span class="lineno"> 685</span>  }</div><div class="line"><a name="l00686"></a><span class="lineno"> 686</span> </div><div class="line"><a name="l00698"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#a06b863abd1b457c48b7080e203b47a0f"> 698</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#a06b863abd1b457c48b7080e203b47a0f">destroy</a>(<a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a7d36e852257a965a9a0ed3fb636433e2">entity_type</a> entity)<span class="keyword"> override </span>{</div><div class="line"><a name="l00699"></a><span class="lineno"> 699</span>  <span class="comment">// swapping isn't required here, we are getting rid of the last element</span></div><div class="line"><a name="l00700"></a><span class="lineno"> 700</span>  <span class="comment">// however, we must protect ourselves from self assignments (see #37)</span></div><div class="line"><a name="l00701"></a><span class="lineno"> 701</span>  <span class="keyword">auto</span> tmp = std::move(instances.back());</div><div class="line"><a name="l00702"></a><span class="lineno"> 702</span>  instances[underlying_type::get(entity)] = std::move(tmp);</div><div class="line"><a name="l00703"></a><span class="lineno"> 703</span>  instances.pop_back();</div><div class="line"><a name="l00704"></a><span class="lineno"> 704</span>  underlying_type::destroy(entity);</div><div class="line"><a name="l00705"></a><span class="lineno"> 705</span>  }</div><div class="line"><a name="l00706"></a><span class="lineno"> 706</span> </div><div class="line"><a name="l00730"></a><span class="lineno"> 730</span>  <span class="keyword">template</span><<span class="keyword">typename</span> Compare></div><div class="line"><a name="l00731"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#a91cbe1334ba5135e44dab73adedbad8d"> 731</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#a91cbe1334ba5135e44dab73adedbad8d">sort</a>(Compare compare) {</div><div class="line"><a name="l00732"></a><span class="lineno"> 732</span>  std::vector<pos_type> copy(instances.size());</div><div class="line"><a name="l00733"></a><span class="lineno"> 733</span>  std::iota(copy.begin(), copy.end(), 0);</div><div class="line"><a name="l00734"></a><span class="lineno"> 734</span> </div><div class="line"><a name="l00735"></a><span class="lineno"> 735</span>  std::sort(copy.begin(), copy.end(), [<span class="keyword">this</span>, compare = std::move(compare)](<span class="keyword">auto</span> lhs, <span class="keyword">auto</span> rhs) {</div><div class="line"><a name="l00736"></a><span class="lineno"> 736</span>  <span class="keywordflow">return</span> compare(const_cast<const object_type &>(instances[rhs]), const_cast<const object_type &>(instances[lhs]));</div><div class="line"><a name="l00737"></a><span class="lineno"> 737</span>  });</div><div class="line"><a name="l00738"></a><span class="lineno"> 738</span> </div><div class="line"><a name="l00739"></a><span class="lineno"> 739</span>  <span class="keywordflow">for</span>(<a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a20c218a69cf339371251ffa5580d7aa0">pos_type</a> pos = 0, last = copy.size(); pos < last; ++pos) {</div><div class="line"><a name="l00740"></a><span class="lineno"> 740</span>  <span class="keyword">auto</span> curr = pos;</div><div class="line"><a name="l00741"></a><span class="lineno"> 741</span>  <span class="keyword">auto</span> next = copy[curr];</div><div class="line"><a name="l00742"></a><span class="lineno"> 742</span> </div><div class="line"><a name="l00743"></a><span class="lineno"> 743</span>  <span class="keywordflow">while</span>(curr != next) {</div><div class="line"><a name="l00744"></a><span class="lineno"> 744</span>  <span class="keyword">const</span> <span class="keyword">auto</span> lhs = copy[curr];</div><div class="line"><a name="l00745"></a><span class="lineno"> 745</span>  <span class="keyword">const</span> <span class="keyword">auto</span> rhs = copy[next];</div><div class="line"><a name="l00746"></a><span class="lineno"> 746</span>  std::swap(instances[lhs], instances[rhs]);</div><div class="line"><a name="l00747"></a><span class="lineno"> 747</span>  underlying_type::swap(lhs, rhs);</div><div class="line"><a name="l00748"></a><span class="lineno"> 748</span>  copy[curr] = curr;</div><div class="line"><a name="l00749"></a><span class="lineno"> 749</span>  curr = next;</div><div class="line"><a name="l00750"></a><span class="lineno"> 750</span>  next = copy[curr];</div><div class="line"><a name="l00751"></a><span class="lineno"> 751</span>  }</div><div class="line"><a name="l00752"></a><span class="lineno"> 752</span>  }</div><div class="line"><a name="l00753"></a><span class="lineno"> 753</span>  }</div><div class="line"><a name="l00754"></a><span class="lineno"> 754</span> </div><div class="line"><a name="l00778"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#a8119853a892235c7cc94ebe35aa066a5"> 778</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#a8119853a892235c7cc94ebe35aa066a5">respect</a>(<span class="keyword">const</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html">SparseSet<Entity></a> &other) noexcept {</div><div class="line"><a name="l00779"></a><span class="lineno"> 779</span>  <span class="keyword">auto</span> from = other.begin();</div><div class="line"><a name="l00780"></a><span class="lineno"> 780</span>  <span class="keyword">auto</span> to = other.end();</div><div class="line"><a name="l00781"></a><span class="lineno"> 781</span> </div><div class="line"><a name="l00782"></a><span class="lineno"> 782</span>  <a class="code" href="classentt_1_1SparseSet_3_01Entity_01_4.html#a20c218a69cf339371251ffa5580d7aa0">pos_type</a> pos = underlying_type::size() - 1;</div><div class="line"><a name="l00783"></a><span class="lineno"> 783</span>  <span class="keyword">const</span> <span class="keyword">auto</span> *local = underlying_type::data();</div><div class="line"><a name="l00784"></a><span class="lineno"> 784</span> </div><div class="line"><a name="l00785"></a><span class="lineno"> 785</span>  <span class="keywordflow">while</span>(pos && from != to) {</div><div class="line"><a name="l00786"></a><span class="lineno"> 786</span>  <span class="keyword">const</span> <span class="keyword">auto</span> curr = *from;</div><div class="line"><a name="l00787"></a><span class="lineno"> 787</span> </div><div class="line"><a name="l00788"></a><span class="lineno"> 788</span>  <span class="keywordflow">if</span>(underlying_type::has(curr)) {</div><div class="line"><a name="l00789"></a><span class="lineno"> 789</span>  <span class="keywordflow">if</span>(curr != *(local + pos)) {</div><div class="line"><a name="l00790"></a><span class="lineno"> 790</span>  <span class="keyword">auto</span> candidate = underlying_type::get(curr);</div><div class="line"><a name="l00791"></a><span class="lineno"> 791</span>  std::swap(instances[pos], instances[candidate]);</div><div class="line"><a name="l00792"></a><span class="lineno"> 792</span>  underlying_type::swap(pos, candidate);</div><div class="line"><a name="l00793"></a><span class="lineno"> 793</span>  }</div><div class="line"><a name="l00794"></a><span class="lineno"> 794</span> </div><div class="line"><a name="l00795"></a><span class="lineno"> 795</span>  --pos;</div><div class="line"><a name="l00796"></a><span class="lineno"> 796</span>  }</div><div class="line"><a name="l00797"></a><span class="lineno"> 797</span> </div><div class="line"><a name="l00798"></a><span class="lineno"> 798</span>  ++from;</div><div class="line"><a name="l00799"></a><span class="lineno"> 799</span>  }</div><div class="line"><a name="l00800"></a><span class="lineno"> 800</span>  }</div><div class="line"><a name="l00801"></a><span class="lineno"> 801</span> </div><div class="line"><a name="l00805"></a><span class="lineno"><a class="line" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#a3b138c121f11592a3f9e9f2fc2bb67fe"> 805</a></span>  <span class="keywordtype">void</span> <a class="code" href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#a3b138c121f11592a3f9e9f2fc2bb67fe">reset</a>()<span class="keyword"> override </span>{</div><div class="line"><a name="l00806"></a><span class="lineno"> 806</span>  underlying_type::reset();</div><div class="line"><a name="l00807"></a><span class="lineno"> 807</span>  instances.clear();</div><div class="line"><a name="l00808"></a><span class="lineno"> 808</span>  }</div><div class="line"><a name="l00809"></a><span class="lineno"> 809</span> </div><div class="line"><a name="l00810"></a><span class="lineno"> 810</span> <span class="keyword">private</span>:</div><div class="line"><a name="l00811"></a><span class="lineno"> 811</span>  std::vector<object_type> instances;</div><div class="line"><a name="l00812"></a><span class="lineno"> 812</span> };</div><div class="line"><a name="l00813"></a><span class="lineno"> 813</span> </div><div class="line"><a name="l00814"></a><span class="lineno"> 814</span> </div><div class="line"><a name="l00815"></a><span class="lineno"> 815</span> }</div><div class="line"><a name="l00816"></a><span class="lineno"> 816</span> </div><div class="line"><a name="l00817"></a><span class="lineno"> 817</span> </div><div class="line"><a name="l00818"></a><span class="lineno"> 818</span> <span class="preprocessor">#endif // ENTT_ENTITY_SPARSE_SET_HPP</span></div><div class="ttc" id="classentt_1_1SparseSet_3_01Entity_01_4_html_a7f433ca12b49abcfb76fd9ff524bc518"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_01_4.html#a7f433ca12b49abcfb76fd9ff524bc518">entt::SparseSet< Entity >::extent</a></div><div class="ttdeci">size_type extent() const noexcept</div><div class="ttdoc">Returns the extent of a sparse set. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00156">sparse_set.hpp:156</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_01_4_html_a62cf2531d240e6007b2f8397670701f7"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_01_4.html#a62cf2531d240e6007b2f8397670701f7">entt::SparseSet< Entity >::respect</a></div><div class="ttdeci">void respect(const SparseSet< Entity > &other) noexcept</div><div class="ttdoc">Sort entities according to their order in another sparse set. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00380">sparse_set.hpp:380</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4_html_a91cbe1334ba5135e44dab73adedbad8d"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#a91cbe1334ba5135e44dab73adedbad8d">entt::SparseSet< Entity, Type >::sort</a></div><div class="ttdeci">void sort(Compare compare)</div><div class="ttdoc">Sort components according to the given comparison function. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00731">sparse_set.hpp:731</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_01_4_html_ad1c62c65aeb0112e688f05d8f641cdab"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_01_4.html#ad1c62c65aeb0112e688f05d8f641cdab">entt::SparseSet< Entity >::reset</a></div><div class="ttdeci">virtual void reset()</div><div class="ttdoc">Resets a sparse set. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00402">sparse_set.hpp:402</a></div></div>
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<div class="ttc" id="namespaceentt_html"><div class="ttname"><a href="namespaceentt.html">entt</a></div><div class="ttdoc">EnTT default namespace. </div><div class="ttdef"><b>Definition:</b> <a href="family_8hpp_source.html#l00010">family.hpp:10</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4_html_a3b138c121f11592a3f9e9f2fc2bb67fe"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#a3b138c121f11592a3f9e9f2fc2bb67fe">entt::SparseSet< Entity, Type >::reset</a></div><div class="ttdeci">void reset() override</div><div class="ttdoc">Resets a sparse set. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00805">sparse_set.hpp:805</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4_html_aafa311b5b7379150782d94dffdbab959"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#aafa311b5b7379150782d94dffdbab959">entt::SparseSet< Entity, Type >::raw</a></div><div class="ttdeci">const object_type * raw() const noexcept</div><div class="ttdoc">Direct access to the array of objects. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00542">sparse_set.hpp:542</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_01_4_html_a9d6b9c98d2645d821c81ff7d3586ca27"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_01_4.html#a9d6b9c98d2645d821c81ff7d3586ca27">entt::SparseSet< Entity >::empty</a></div><div class="ttdeci">bool empty() const noexcept</div><div class="ttdoc">Checks whether a sparse set is empty. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00178">sparse_set.hpp:178</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_html"><div class="ttname"><a href="classentt_1_1SparseSet.html">entt::SparseSet</a></div><div class="ttdoc">Sparse set. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00026">sparse_set.hpp:26</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_01_4_html_ab81c48dcee7a1104ee82794613ee7ed2"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_01_4.html#ab81c48dcee7a1104ee82794613ee7ed2">entt::SparseSet< Entity >::size_type</a></div><div class="ttdeci">std::size_t size_type</div><div class="ttdoc">Unsigned integer type. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00114">sparse_set.hpp:114</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4_html"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html">entt::SparseSet< Entity, Type ></a></div><div class="ttdoc">Extended sparse set implementation. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00436">sparse_set.hpp:436</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4_html_a06b863abd1b457c48b7080e203b47a0f"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#a06b863abd1b457c48b7080e203b47a0f">entt::SparseSet< Entity, Type >::destroy</a></div><div class="ttdeci">void destroy(entity_type entity) override</div><div class="ttdoc">Removes an entity from a sparse set and destroies its object. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00698">sparse_set.hpp:698</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_01_4_html_a7d36e852257a965a9a0ed3fb636433e2"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_01_4.html#a7d36e852257a965a9a0ed3fb636433e2">entt::SparseSet< Entity >::entity_type</a></div><div class="ttdeci">Entity entity_type</div><div class="ttdoc">Underlying entity identifier. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00110">sparse_set.hpp:110</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_01_4_html_a1ad77aed1e49af60b61044c996969b9a"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_01_4.html#a1ad77aed1e49af60b61044c996969b9a">entt::SparseSet< Entity >::iterator_type</a></div><div class="ttdeci">Iterator iterator_type</div><div class="ttdoc">Input iterator type. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00116">sparse_set.hpp:116</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_01_4_html"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_01_4.html">entt::SparseSet< Entity ></a></div><div class="ttdoc">Basic sparse set implementation. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00057">sparse_set.hpp:57</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4_html_a54631df2a6cca96a25ceea440dda370c"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#a54631df2a6cca96a25ceea440dda370c">entt::SparseSet< Entity, Type >::construct</a></div><div class="ttdeci">std::enable_if_t< std::is_constructible< Type, Args... >::value, object_type & > construct(entity_type entity, Args &&... args)</div><div class="ttdoc">Assigns an entity to a sparse set and constructs its object. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00653">sparse_set.hpp:653</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_01_4_html_a1b6a33e6e65345bf028877efa74c5a5e"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_01_4.html#a1b6a33e6e65345bf028877efa74c5a5e">entt::SparseSet< Entity >::has</a></div><div class="ttdeci">bool has(entity_type entity) const noexcept</div><div class="ttdoc">Checks if a sparse set contains an entity. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00239">sparse_set.hpp:239</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4_html_a63142a81c21687b8c98058fe29cd86b6"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#a63142a81c21687b8c98058fe29cd86b6">entt::SparseSet< Entity, Type >::construct</a></div><div class="ttdeci">std::enable_if_t<!std::is_constructible< Type, Args... >::value, object_type & > construct(entity_type entity, Args &&... args)</div><div class="ttdoc">Assigns an entity to a sparse set and constructs its object. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00681">sparse_set.hpp:681</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_01_4_html_a20c218a69cf339371251ffa5580d7aa0"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_01_4.html#a20c218a69cf339371251ffa5580d7aa0">entt::SparseSet< Entity >::pos_type</a></div><div class="ttdeci">entity_type pos_type</div><div class="ttdoc">Entity dependent position type. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00112">sparse_set.hpp:112</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4_html_af7db79dfb4e031a63fa526d4f7d54915"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#af7db79dfb4e031a63fa526d4f7d54915">entt::SparseSet< Entity, Type >::object_type</a></div><div class="ttdeci">Type object_type</div><div class="ttdoc">Type of the objects associated to the entities. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00491">sparse_set.hpp:491</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_01_4_html_a6e4dda542e3d725dd963dea57bfb9cb1"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_01_4.html#a6e4dda542e3d725dd963dea57bfb9cb1">entt::SparseSet< Entity >::data</a></div><div class="ttdeci">const entity_type * data() const noexcept</div><div class="ttdoc">Direct access to the internal packed array. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00197">sparse_set.hpp:197</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_01_4_html_a2c54395d55054437bfe179718e102181"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_01_4.html#a2c54395d55054437bfe179718e102181">entt::SparseSet< Entity >::end</a></div><div class="ttdeci">iterator_type end() const noexcept</div><div class="ttdoc">Returns an iterator to the end. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00230">sparse_set.hpp:230</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_01_4_html_ab4be1be8435da50621373c0bd737a1e8"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_01_4.html#ab4be1be8435da50621373c0bd737a1e8">entt::SparseSet< Entity >::destroy</a></div><div class="ttdeci">virtual void destroy(entity_type entity)</div><div class="ttdoc">Removes an entity from a sparse set. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00324">sparse_set.hpp:324</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4_html_ae94011eb155429b9d03d5bfb06effe4d"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#ae94011eb155429b9d03d5bfb06effe4d">entt::SparseSet< Entity, Type >::begin</a></div><div class="ttdeci">iterator_type begin() noexcept</div><div class="ttdoc">Returns an iterator to the beginning. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00577">sparse_set.hpp:577</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_01_4_html_a498d79ccde6f59bce3527cd8a67e8db3"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_01_4.html#a498d79ccde6f59bce3527cd8a67e8db3">entt::SparseSet< Entity >::fast</a></div><div class="ttdeci">bool fast(entity_type entity) const noexcept</div><div class="ttdoc">Checks if a sparse set contains an entity (unsafe). </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00262">sparse_set.hpp:262</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_01_4_html_a1efc9899f2ede4fd8ea1840a7ed8dbc7"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_01_4.html#a1efc9899f2ede4fd8ea1840a7ed8dbc7">entt::SparseSet< Entity >::begin</a></div><div class="ttdeci">iterator_type begin() const noexcept</div><div class="ttdoc">Returns an iterator to the beginning. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00213">sparse_set.hpp:213</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4_html_ac9f9d30e69502cff54f4c0231060cd53"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#ac9f9d30e69502cff54f4c0231060cd53">entt::SparseSet< Entity, Type >::end</a></div><div class="ttdeci">iterator_type end() noexcept</div><div class="ttdoc">Returns an iterator to the end. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00595">sparse_set.hpp:595</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_01_4_html_adb65da9a09f41dcf6ec433066a7891c3"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_01_4.html#adb65da9a09f41dcf6ec433066a7891c3">entt::SparseSet< Entity >::construct</a></div><div class="ttdeci">void construct(entity_type entity)</div><div class="ttdoc">Assigns an entity to a sparse set. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00299">sparse_set.hpp:299</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_01_4_html_a337360e8d0f44c373acef65328a3e9f8"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_01_4.html#a337360e8d0f44c373acef65328a3e9f8">entt::SparseSet< Entity >::size</a></div><div class="ttdeci">size_type size() const noexcept</div><div class="ttdoc">Returns the number of elements in a sparse set. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00170">sparse_set.hpp:170</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4_html_a8119853a892235c7cc94ebe35aa066a5"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#a8119853a892235c7cc94ebe35aa066a5">entt::SparseSet< Entity, Type >::respect</a></div><div class="ttdeci">void respect(const SparseSet< Entity > &other) noexcept</div><div class="ttdoc">Sort components according to the order of the entities in another sparse set. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00778">sparse_set.hpp:778</a></div></div>
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<div class="ttc" id="namespaceentt_html_a18e1a7cdfcb0c0ba075e0beeda95285f"><div class="ttname"><a href="namespaceentt.html#a18e1a7cdfcb0c0ba075e0beeda95285f">entt::operator!=</a></div><div class="ttdeci">constexpr bool operator!=(const HashedString &lhs, const HashedString &rhs) noexcept</div><div class="ttdoc">Compares two hashed strings. </div><div class="ttdef"><b>Definition:</b> <a href="hashed__string_8hpp_source.html#l00102">hashed_string.hpp:102</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4_html_ac64be22bc7dcb2498257dccbbcfa004f"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_00_01Type_01_4.html#ac64be22bc7dcb2498257dccbbcfa004f">entt::SparseSet< Entity, Type >::raw</a></div><div class="ttdeci">object_type * raw() noexcept</div><div class="ttdoc">Direct access to the array of objects. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00561">sparse_set.hpp:561</a></div></div>
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<div class="ttc" id="classentt_1_1SparseSet_3_01Entity_01_4_html_af122c1668ab1efbe0eca5792e9bae434"><div class="ttname"><a href="classentt_1_1SparseSet_3_01Entity_01_4.html#af122c1668ab1efbe0eca5792e9bae434">entt::SparseSet< Entity >::swap</a></div><div class="ttdeci">void swap(pos_type lhs, pos_type rhs) noexcept</div><div class="ttdoc">Swaps the position of two entities in the internal packed array. </div><div class="ttdef"><b>Definition:</b> <a href="sparse__set_8hpp_source.html#l00352">sparse_set.hpp:352</a></div></div>
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<div class="ttc" id="structentt_1_1entt__traits_html"><div class="ttname"><a href="structentt_1_1entt__traits.html">entt::entt_traits</a></div><div class="ttdoc">Entity traits. </div><div class="ttdef"><b>Definition:</b> <a href="entt__traits_8hpp_source.html#l00018">entt_traits.hpp:18</a></div></div>
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