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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="preprocessor">#ifndef ENTT_ENTITY_HELPER_HPP</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="preprocessor">#define ENTT_ENTITY_HELPER_HPP</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160; </div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160; </div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="preprocessor">#include &lt;type_traits&gt;</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="preprocessor">#include &quot;../config/config.h&quot;</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="preprocessor">#include &quot;../core/type_traits.hpp&quot;</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="preprocessor">#include &quot;../signal/delegate.hpp&quot;</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="preprocessor">#include &quot;registry.hpp&quot;</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="preprocessor">#include &quot;fwd.hpp&quot;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160; </div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160; </div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceentt.html">entt</a> {</div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160; </div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160; </div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="keyword">template</span>&lt;<span class="keywordtype">bool</span> Const, <span class="keyword">typename</span> Entity&gt;</div>
<div class="line"><a name="l00022"></a><span class="lineno"><a class="line" href="structentt_1_1as__view.html"> 22</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structentt_1_1as__view.html">as_view</a> {</div>
<div class="line"><a name="l00024"></a><span class="lineno"><a class="line" href="structentt_1_1as__view.html#ad3c4cad92dd7515bb25568f13f7f91f3"> 24</a></span>&#160; <span class="keyword">using</span> <a class="code" href="structentt_1_1as__view.html#ad3c4cad92dd7515bb25568f13f7f91f3">registry_type</a> = std::conditional_t&lt;Const, const basic_registry&lt;Entity&gt;, <a class="code" href="classentt_1_1basic__registry.html">basic_registry&lt;Entity&gt;</a>&gt;;</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160; </div>
<div class="line"><a name="l00030"></a><span class="lineno"><a class="line" href="structentt_1_1as__view.html#a518411eb57d18841e3e9a7f8edfe5f2d"> 30</a></span>&#160; <a class="code" href="structentt_1_1as__view.html#a518411eb57d18841e3e9a7f8edfe5f2d">as_view</a>(<a class="code" href="structentt_1_1as__view.html#ad3c4cad92dd7515bb25568f13f7f91f3">registry_type</a> &amp;source) ENTT_NOEXCEPT: reg{source} {}</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160; </div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Exclude, <span class="keyword">typename</span>... Component&gt;</div>
<div class="line"><a name="l00039"></a><span class="lineno"><a class="line" href="structentt_1_1as__view.html#a3b904e9fccb7a43f098ce729df0486ec"> 39</a></span>&#160; <span class="keyword">operator</span> <a class="code" href="classentt_1_1basic__view.html">basic_view</a>&lt;Entity, Exclude, Component...&gt;() <span class="keyword">const</span> {</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; <span class="keywordflow">return</span> reg.template <a class="code" href="classentt_1_1basic__view.html">view</a>&lt;Component...&gt;(Exclude{});</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; }</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; </div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; <a class="code" href="structentt_1_1as__view.html#ad3c4cad92dd7515bb25568f13f7f91f3">registry_type</a> &amp;reg;</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160;};</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; </div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; </div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> Entity&gt;</div>
<div class="line"><a name="l00057"></a><span class="lineno"><a class="line" href="namespaceentt.html#a9c549e7009b0615abad0a66266dd5504"> 57</a></span>&#160;<a class="code" href="namespaceentt.html#a9c549e7009b0615abad0a66266dd5504">as_view</a>(<a class="code" href="classentt_1_1basic__registry.html">basic_registry&lt;Entity&gt;</a> &amp;) ENTT_NOEXCEPT -&gt; <a class="code" href="structentt_1_1as__view.html">as_view&lt;false, Entity&gt;</a>;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; </div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; </div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> Entity&gt;</div>
<div class="line"><a name="l00062"></a><span class="lineno"><a class="line" href="namespaceentt.html#a130b346b96fbadb685182ba94b4c337d"> 62</a></span>&#160;<a class="code" href="namespaceentt.html#a9c549e7009b0615abad0a66266dd5504">as_view</a>(<span class="keyword">const</span> <a class="code" href="classentt_1_1basic__registry.html">basic_registry&lt;Entity&gt;</a> &amp;) ENTT_NOEXCEPT -&gt; <a class="code" href="structentt_1_1as__view.html">as_view&lt;true, Entity&gt;</a>;</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; </div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; </div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160;<span class="keyword">template</span>&lt;<span class="keywordtype">bool</span> Const, <span class="keyword">typename</span> Entity&gt;</div>
<div class="line"><a name="l00071"></a><span class="lineno"><a class="line" href="structentt_1_1as__group.html"> 71</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structentt_1_1as__group.html">as_group</a> {</div>
<div class="line"><a name="l00073"></a><span class="lineno"><a class="line" href="structentt_1_1as__group.html#a0931353ef28b22e1bd4b910e4f99e53f"> 73</a></span>&#160; <span class="keyword">using</span> <a class="code" href="structentt_1_1as__group.html#a0931353ef28b22e1bd4b910e4f99e53f">registry_type</a> = std::conditional_t&lt;Const, const basic_registry&lt;Entity&gt;, <a class="code" href="classentt_1_1basic__registry.html">basic_registry&lt;Entity&gt;</a>&gt;;</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; </div>
<div class="line"><a name="l00079"></a><span class="lineno"><a class="line" href="structentt_1_1as__group.html#aba20c0ec4b20a3ea050d5a1d9a06214b"> 79</a></span>&#160; <a class="code" href="structentt_1_1as__group.html#aba20c0ec4b20a3ea050d5a1d9a06214b">as_group</a>(<a class="code" href="structentt_1_1as__group.html#a0931353ef28b22e1bd4b910e4f99e53f">registry_type</a> &amp;source) ENTT_NOEXCEPT: reg{source} {}</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; </div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Exclude, <span class="keyword">typename</span> Get, <span class="keyword">typename</span>... Owned&gt;</div>
<div class="line"><a name="l00089"></a><span class="lineno"><a class="line" href="structentt_1_1as__group.html#a1b2cca9ea1f730bce2619c0f5e58393f"> 89</a></span>&#160; <span class="keyword">operator</span> <a class="code" href="classentt_1_1basic__group.html">basic_group</a>&lt;Entity, Exclude, Get, Owned...&gt;() <span class="keyword">const</span> {</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; <span class="keywordflow">return</span> reg.template <a class="code" href="classentt_1_1basic__group.html">group</a>&lt;Owned...&gt;(Get{}, Exclude{});</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; }</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; </div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; <a class="code" href="structentt_1_1as__group.html#a0931353ef28b22e1bd4b910e4f99e53f">registry_type</a> &amp;reg;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;};</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; </div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; </div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> Entity&gt;</div>
<div class="line"><a name="l00107"></a><span class="lineno"><a class="line" href="namespaceentt.html#a18699e140418dddd159604ca37fd9830"> 107</a></span>&#160;<a class="code" href="namespaceentt.html#a18699e140418dddd159604ca37fd9830">as_group</a>(<a class="code" href="classentt_1_1basic__registry.html">basic_registry&lt;Entity&gt;</a> &amp;) ENTT_NOEXCEPT -&gt; <a class="code" href="structentt_1_1as__group.html">as_group&lt;false, Entity&gt;</a>;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; </div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; </div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> Entity&gt;</div>
<div class="line"><a name="l00112"></a><span class="lineno"><a class="line" href="namespaceentt.html#af29f9c152cc4d881daa78d86e063e897"> 112</a></span>&#160;<a class="code" href="namespaceentt.html#a18699e140418dddd159604ca37fd9830">as_group</a>(<span class="keyword">const</span> <a class="code" href="classentt_1_1basic__registry.html">basic_registry&lt;Entity&gt;</a> &amp;) ENTT_NOEXCEPT -&gt; <a class="code" href="structentt_1_1as__group.html">as_group&lt;true, Entity&gt;</a>;</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; </div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; </div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; </div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160;<span class="keyword">template</span>&lt;auto Member, <span class="keyword">typename</span> Entity = entity&gt;</div>
<div class="line"><a name="l00124"></a><span class="lineno"><a class="line" href="namespaceentt.html#aa512a354fe328df6be5a92eb43cd4d69"> 124</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="namespaceentt.html#aa512a354fe328df6be5a92eb43cd4d69">invoke</a>(<a class="code" href="classentt_1_1basic__registry.html">basic_registry&lt;Entity&gt;</a> &amp;reg, <span class="keyword">const</span> Entity <a class="code" href="namespaceentt.html">entt</a>) {</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; static_assert(std::is_member_function_pointer_v&lt;decltype(Member)&gt;, <span class="stringliteral">&quot;Invalid pointer to non-static member function&quot;</span>);</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; <a class="code" href="classentt_1_1delegate.html">delegate</a>&lt;void(<a class="code" href="classentt_1_1basic__registry.html">basic_registry&lt;Entity&gt;</a> &amp;, <span class="keyword">const</span> Entity)&gt; func;</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; func.template connect&lt;Member&gt;(reg.template <a class="code" href="namespaceentt.html#a8c24ecc5ab0055f9f2a4725c95afb29e">get</a>&lt;<a class="code" href="namespaceentt.html#a49f19d031690e5ebfffd6c7a4f6bd364">member_class_t</a>&lt;decltype(Member)&gt;&gt;(<a class="code" href="namespaceentt.html">entt</a>));</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; func(reg, <a class="code" href="namespaceentt.html">entt</a>);</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;}</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; </div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; </div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> Entity, <span class="keyword">typename</span> Component&gt;</div>
<div class="line"><a name="l00141"></a><span class="lineno"><a class="line" href="namespaceentt.html#adb31e9165a07456c03f8c64295117824"> 141</a></span>&#160;Entity <a class="code" href="namespaceentt.html#adb31e9165a07456c03f8c64295117824">to_entity</a>(<span class="keyword">const</span> <a class="code" href="classentt_1_1basic__registry.html">basic_registry&lt;Entity&gt;</a> &amp;reg, <span class="keyword">const</span> Component &amp;component) {</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; <span class="keywordflow">return</span> *(reg.template data&lt;Component&gt;() + (&amp;component - reg.template raw&lt;Component&gt;()));</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160;}</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; </div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; </div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160;}</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; </div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; </div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160;<span class="preprocessor">#endif</span></div>
</div><!-- fragment --></div><!-- contents -->
<div class="ttc" id="anamespaceentt_html_a8c24ecc5ab0055f9f2a4725c95afb29e"><div class="ttname"><a href="namespaceentt.html#a8c24ecc5ab0055f9f2a4725c95afb29e">entt::get</a></div><div class="ttdeci">constexpr get_t&lt; Type... &gt; get</div><div class="ttdoc">Variable template for lists of observed components.</div><div class="ttdef"><b>Definition:</b> <a href="entity_2utility_8hpp_source.html#l00040">utility.hpp:40</a></div></div>
<div class="ttc" id="astructentt_1_1as__group_html"><div class="ttname"><a href="structentt_1_1as__group.html">entt::as_group</a></div><div class="ttdoc">Converts a registry to a group.</div><div class="ttdef"><b>Definition:</b> <a href="helper_8hpp_source.html#l00071">helper.hpp:71</a></div></div>
<div class="ttc" id="aclassentt_1_1basic__group_html"><div class="ttname"><a href="classentt_1_1basic__group.html">entt::basic_group</a></div><div class="ttdoc">Group.</div><div class="ttdef"><b>Definition:</b> <a href="entity_2fwd_8hpp_source.html#l00024">fwd.hpp:24</a></div></div>
<div class="ttc" id="astructentt_1_1as__view_html_ad3c4cad92dd7515bb25568f13f7f91f3"><div class="ttname"><a href="structentt_1_1as__view.html#ad3c4cad92dd7515bb25568f13f7f91f3">entt::as_view::registry_type</a></div><div class="ttdeci">std::conditional_t&lt; Const, const basic_registry&lt; Entity &gt;, basic_registry&lt; Entity &gt; &gt; registry_type</div><div class="ttdoc">Type of registry to convert.</div><div class="ttdef"><b>Definition:</b> <a href="helper_8hpp_source.html#l00024">helper.hpp:24</a></div></div>
<div class="ttc" id="astructentt_1_1as__group_html_aba20c0ec4b20a3ea050d5a1d9a06214b"><div class="ttname"><a href="structentt_1_1as__group.html#aba20c0ec4b20a3ea050d5a1d9a06214b">entt::as_group::as_group</a></div><div class="ttdeci">as_group(registry_type &amp;source) noexcept</div><div class="ttdoc">Constructs a converter for a given registry.</div><div class="ttdef"><b>Definition:</b> <a href="helper_8hpp_source.html#l00079">helper.hpp:79</a></div></div>
<div class="ttc" id="anamespaceentt_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="algorithm_8hpp_source.html#l00013">algorithm.hpp:13</a></div></div>
<div class="ttc" id="anamespaceentt_html_adb31e9165a07456c03f8c64295117824"><div class="ttname"><a href="namespaceentt.html#adb31e9165a07456c03f8c64295117824">entt::to_entity</a></div><div class="ttdeci">Entity to_entity(const basic_registry&lt; Entity &gt; &amp;reg, const Component &amp;component)</div><div class="ttdoc">Returns the entity associated with a given component.</div><div class="ttdef"><b>Definition:</b> <a href="helper_8hpp_source.html#l00141">helper.hpp:141</a></div></div>
<div class="ttc" id="anamespaceentt_html_a18699e140418dddd159604ca37fd9830"><div class="ttname"><a href="namespaceentt.html#a18699e140418dddd159604ca37fd9830">entt::as_group</a></div><div class="ttdeci">as_group(basic_registry&lt; Entity &gt; &amp;) noexcept -&gt; as_group&lt; false, Entity &gt;</div><div class="ttdoc">Deduction guide.</div></div>
<div class="ttc" id="astructentt_1_1as__group_html_a0931353ef28b22e1bd4b910e4f99e53f"><div class="ttname"><a href="structentt_1_1as__group.html#a0931353ef28b22e1bd4b910e4f99e53f">entt::as_group::registry_type</a></div><div class="ttdeci">std::conditional_t&lt; Const, const basic_registry&lt; Entity &gt;, basic_registry&lt; Entity &gt; &gt; registry_type</div><div class="ttdoc">Type of registry to convert.</div><div class="ttdef"><b>Definition:</b> <a href="helper_8hpp_source.html#l00073">helper.hpp:73</a></div></div>
<div class="ttc" id="anamespaceentt_html_aa512a354fe328df6be5a92eb43cd4d69"><div class="ttname"><a href="namespaceentt.html#aa512a354fe328df6be5a92eb43cd4d69">entt::invoke</a></div><div class="ttdeci">void invoke(basic_registry&lt; Entity &gt; &amp;reg, const Entity entt)</div><div class="ttdoc">Helper to create a listener that directly invokes a member function.</div><div class="ttdef"><b>Definition:</b> <a href="helper_8hpp_source.html#l00124">helper.hpp:124</a></div></div>
<div class="ttc" id="astructentt_1_1as__view_html_a518411eb57d18841e3e9a7f8edfe5f2d"><div class="ttname"><a href="structentt_1_1as__view.html#a518411eb57d18841e3e9a7f8edfe5f2d">entt::as_view::as_view</a></div><div class="ttdeci">as_view(registry_type &amp;source) noexcept</div><div class="ttdoc">Constructs a converter for a given registry.</div><div class="ttdef"><b>Definition:</b> <a href="helper_8hpp_source.html#l00030">helper.hpp:30</a></div></div>
<div class="ttc" id="aclassentt_1_1basic__registry_html"><div class="ttname"><a href="classentt_1_1basic__registry.html">entt::basic_registry</a></div><div class="ttdoc">Fast and reliable entity-component system.</div><div class="ttdef"><b>Definition:</b> <a href="registry_8hpp_source.html#l00043">registry.hpp:43</a></div></div>
<div class="ttc" id="anamespaceentt_html_a9c549e7009b0615abad0a66266dd5504"><div class="ttname"><a href="namespaceentt.html#a9c549e7009b0615abad0a66266dd5504">entt::as_view</a></div><div class="ttdeci">as_view(basic_registry&lt; Entity &gt; &amp;) noexcept -&gt; as_view&lt; false, Entity &gt;</div><div class="ttdoc">Deduction guide.</div></div>
<div class="ttc" id="astructentt_1_1as__view_html"><div class="ttname"><a href="structentt_1_1as__view.html">entt::as_view</a></div><div class="ttdoc">Converts a registry to a view.</div><div class="ttdef"><b>Definition:</b> <a href="helper_8hpp_source.html#l00022">helper.hpp:22</a></div></div>
<div class="ttc" id="aclassentt_1_1basic__view_html"><div class="ttname"><a href="classentt_1_1basic__view.html">entt::basic_view</a></div><div class="ttdoc">View.</div><div class="ttdef"><b>Definition:</b> <a href="entity_2fwd_8hpp_source.html#l00016">fwd.hpp:16</a></div></div>
<div class="ttc" id="aclassentt_1_1delegate_html"><div class="ttname"><a href="classentt_1_1delegate.html">entt::delegate</a></div><div class="ttdoc">Basic delegate implementation.</div><div class="ttdef"><b>Definition:</b> <a href="delegate_8hpp_source.html#l00081">delegate.hpp:81</a></div></div>
<div class="ttc" id="anamespaceentt_html_a49f19d031690e5ebfffd6c7a4f6bd364"><div class="ttname"><a href="namespaceentt.html#a49f19d031690e5ebfffd6c7a4f6bd364">entt::member_class_t</a></div><div class="ttdeci">typename member_class&lt; Member &gt;::type member_class_t</div><div class="ttdoc">Helper type.</div><div class="ttdef"><b>Definition:</b> <a href="core_2type__traits_8hpp_source.html#l00256">type_traits.hpp:256</a></div></div>
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