{"id":122436,"date":"2026-11-04T23:17:07","date_gmt":"2026-11-04T15:17:07","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/122436.html"},"modified":"2026-11-04T23:17:07","modified_gmt":"2026-11-04T15:17:07","slug":"%e3%80%90lua%e8%bf%9b%e9%98%b6%e7%b3%bb%e5%88%97%e3%80%91lua-%e9%9d%a2%e5%90%91%e5%af%b9%e8%b1%a1%e7%bc%96%e7%a8%8b%ef%bc%9a%e4%bb%8e-table-%e5%88%b0%e7%b1%bb%ef%bc%9a%e6%9e%84%e9%80%a0%e5%87%bd","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/122436.html","title":{"rendered":"\u3010Lua\u8fdb\u9636\u7cfb\u5217\u3011Lua \u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\uff1a\u4ece Table \u5230\u7c7b\uff1a\u6784\u9020\u51fd\u6570\u3001\u7ee7\u627f\u3001\u591a\u6001\u3001\u591a\u7ee7\u627f\u4e0e\u5c01\u88c5"},"content":{"rendered":"<p>        \/* MD \/ \u5bcc\u6587\u672c\u4e2d\u7684 .toc\uff08\u542b\u535a\u5ba2\u56ed\u642c\u5bb6\u7b49\u5d4c\u5957\u7ed3\u6784\uff09\uff1b.toc-box \u5728\u4fa7\u680f\uff0c\u4e0d\u53d7\u5f71\u54cd *\/<br \/>\n        #content_views .toc,<br \/>\n        \/* \u7f16\u8f91\u5668\u5e38\u5728\u76ee\u5f55\u524d\u540e\u63d2\u5165\u7a7a p\uff08:empty \u4ecd\u5360 20px\uff09\uff0c\u4e00\u5e76\u53bb\u6389\u907f\u514d\u9876\u7a7a\u9699 *\/<br \/>\n        #content_views.markdown_views &gt; p:empty:has(+ .toc),<br \/>\n        #content_views.markdown_views &gt; .toc + p:empty,<br \/>\n        \/* \u5bcc\u6587\u672c\u65e7\u7248\u76ee\u5f55\u6807\u8bb0 *\/<br \/>\n        #content_views.htmledit_views #main-toc,<br \/>\n        #content_views.htmledit_views #hr-toc,<br \/>\n        #content_views.htmledit_views p[id*=\\&#8221;-toc\\&#8221;] {<br \/>\n          display: none !important;<br \/>\n        }<br \/>\n        \/* \u76ee\u5f55\u53bb\u6389\u540e\uff0c\u7d27\u8ddf\u7684\u9996\u4e2a\u6807\u9898\u4e0d\u518d\u591a\u51fa\u4e00\u5757\u4e0a\u8fb9\u8ddd *\/<br \/>\n        #content_views.markdown_views &gt; .toc + h1,<br \/>\n        #content_views.markdown_views &gt; .toc + h2,<br \/>\n        #content_views.markdown_views &gt; .toc + h3,<br \/>\n        #content_views.markdown_views &gt; .toc + h4,<br \/>\n        #content_views.markdown_views &gt; .toc + p:empty + h1,<br \/>\n        #content_views.markdown_views &gt; .toc + p:empty + h2,<br \/>\n        #content_views.markdown_views &gt; .toc + p:empty + h3,<br \/>\n        #content_views.markdown_views &gt; .toc + p:empty + h4 {<br \/>\n          margin-top: 0 !important;<br \/>\n        }<\/p>\n<p>&#x1f525; \u672c\u6587\u4e13\u680f&#xff1a;Lua &#x1f338;\u4f5c\u8005\u4e3b\u9875&#xff1a;\u52aa\u529b\u52aa\u529b\u518d\u52aa\u529bwz<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/11\/20261104151704-6aeb4c70099c9.gif\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/11\/20261104151704-6aeb4c703ac85.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/11\/20261104151705-6aeb4c71d060e.gif\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>&#x1f4aa; \u4eca\u65e5\u535a\u5ba2\u52b1\u5fd7\u8bed\u5f55&#xff1a;\u6709\u4e9b\u8def&#xff0c;\u53ea\u6709\u8d70\u8fc7\u4e4b\u540e\u624d\u80fd\u77e5\u9053\u503c\u4e0d\u503c\u5f97&#xff1b;\u6709\u4e9b\u7b54\u6848&#xff0c;\u53ea\u6709\u7ecf\u5386\u4e4b\u540e\u624d\u6709\u8d44\u683c\u56de\u7b54\u3002<\/p>\n<hr \/>\n<h3>\u601d\u7ef4\u5bfc\u56fe<\/h3>\n<p>Lua \u6ca1\u6709\u539f\u751f\u7684 class \/ \u7c7b\u7ee7\u627f\u8bed\u6cd5<br \/>\n             \u2193<br \/>\n\u4f46\u5df2\u6709 Table\u3001\u51fd\u6570\u3001\u5143\u8868\u3001\u95ed\u5305\u7b49\u57fa\u7840\u673a\u5236<br \/>\n             \u2193<br \/>\nTable \u53ef\u4ee5\u540c\u65f6\u4fdd\u5b58\u72b6\u6001\u548c\u51fd\u6570<br \/>\n             \u2193<br \/>\n\u76f4\u63a5\u7528 Table \u8868\u793a\u5bf9\u8c61<br \/>\n             \u2193<br \/>\n\u591a\u4e2a\u5bf9\u8c61\u62e5\u6709\u76f8\u540c\u7684\u516c\u5171\u884c\u4e3a<br \/>\n             \u2193<br \/>\n\u628a\u516c\u5171\u65b9\u6cd5\u63d0\u53d6\u5230\u4e00\u4e2a Table&#xff08;\u7c7b&#xff09;<br \/>\n             \u2193<br \/>\n\u5b9e\u4f8b\u81ea\u8eab\u4fdd\u5b58\u72b6\u6001&#xff1b;\u901a\u8fc7 __index \u67e5\u627e\u516c\u5171\u65b9\u6cd5<br \/>\n             \u2193<br \/>\n\u91cd\u590d\u521b\u5efa\u5bf9\u8c61\u4e0d\u591f\u65b9\u4fbf<br \/>\n             \u2193<br \/>\n\u901a\u8fc7\u666e\u901a\u51fd\u6570\u5c01\u88c5\u521b\u5efa\u3001\u521d\u59cb\u5316\u3001\u5143\u8868\u5173\u8054&#xff08;\u6784\u9020\u51fd\u6570&#xff09;<br \/>\n             \u2193<br \/>\n\u5b50\u7c7b\u9700\u8981\u590d\u7528\u7236\u7c7b\u7684\u884c\u4e3a<br \/>\n             \u2193<br \/>\n\u7ee7\u7eed\u5229\u7528 __index \u5efa\u7acb\u591a\u7ea7\u65b9\u6cd5\u67e5\u627e\u94fe&#xff08;\u7ee7\u627f&#xff09;<br \/>\n             \u2193<br \/>\n\u5b50\u7c7b\u9700\u8981\u4e0d\u540c\u7684\u5b9e\u73b0<br \/>\n             \u2193<br \/>\n\u540c\u540d\u65b9\u6cd5\u4f18\u5148\u547d\u4e2d\u5b50\u7c7b&#xff08;\u91cd\u5199&#xff09;<br \/>\n             \u2193<br \/>\n\u540c\u4e00\u8c03\u7528\u65b9\u5f0f\u4f5c\u7528\u4e8e\u4e0d\u540c\u5bf9\u8c61&#xff0c;\u6267\u884c\u4e0d\u540c\u884c\u4e3a&#xff08;\u591a\u6001&#xff09;<br \/>\n             \u2193<br \/>\n\u4e00\u4e2a\u7c7b\u9700\u8981\u590d\u7528\u591a\u4e2a\u7c7b\u7684\u884c\u4e3a<br \/>\n             \u2193<br \/>\n\u5229\u7528\u51fd\u6570\u5f62\u5f0f\u7684 __index \u81ea\u884c\u51b3\u5b9a\u67e5\u627e\u987a\u5e8f&#xff08;\u591a\u7ee7\u627f&#xff09;<br \/>\n             \u2193<br \/>\n\u5bf9\u8c61\u5185\u90e8\u67d0\u4e9b\u72b6\u6001\u4e0d\u5e0c\u671b\u66b4\u9732\u7ed9\u5916\u90e8<br \/>\n             \u2193<br \/>\n\u5c40\u90e8\u53d8\u91cf &#043; \u95ed\u5305 &#043; Upvalue&#xff08;\u79c1\u5bc6\u6027&#xff09;<\/p>\n<hr \/>\n<h3>\u4e00\u3001\u4ece\u9762\u5411\u5bf9\u8c61\u7684\u57fa\u672c\u8ba4\u77e5\u5f00\u59cb&#xff1a;Lua \u4e3a\u4ec0\u4e48\u6ca1\u6709 class&#xff0c;\u4e5f\u80fd\u9762\u5411\u5bf9\u8c61&#xff1f;<\/h3>\n<p>\u6211\u4eec\u77e5\u9053&#xff0c;\u5bf9\u4e8e C&#043;&#043;\u3001Java \u8fd9\u6837\u7684\u8bed\u8a00&#xff0c;\u9762\u5411\u5bf9\u8c61\u662f\u8bed\u8a00\u76f4\u63a5\u63d0\u4f9b\u7684\u4e00\u5957\u7f16\u7a0b\u673a\u5236\u3002\u4ee5 C&#043;&#043; \u4e3a\u4f8b&#xff0c;\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7 class \u5b9a\u4e49\u7c7b&#xff0c;\u5229\u7528\u8bbf\u95ee\u63a7\u5236\u7b26\u7ec4\u7ec7\u6210\u5458&#xff0c;\u5e76\u901a\u8fc7\u7ee7\u627f\u3001\u865a\u51fd\u6570\u7b49\u8bed\u8a00\u673a\u5236\u5b9e\u73b0\u7ee7\u627f\u548c\u8fd0\u884c\u65f6\u591a\u6001\u3002<\/p>\n<p>\u9762\u5411\u5bf9\u8c61\u7684\u4e09\u4e2a\u7ecf\u5178\u7279\u6027&#xff0c;\u6211\u4eec\u5df2\u7ecf\u5f88\u719f\u6089\u4e86&#xff1a;\u5c01\u88c5\u3001\u7ee7\u627f\u548c\u591a\u6001\u3002<\/p>\n<p>\u4f46\u662f\u5728\u5b66\u4e60 Lua \u65f6&#xff0c;\u9996\u5148\u9700\u8981\u533a\u5206\u4e24\u4e2a\u6982\u5ff5&#xff1a;<\/p>\n<p>\u8bed\u8a00\u539f\u751f\u63d0\u4f9b\u7c7b\u7cfb\u7edf&#xff0c;\u548c\u80fd\u591f\u5229\u7528\u8bed\u8a00\u673a\u5236\u8fdb\u884c\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b&#xff0c;\u5e76\u4e0d\u662f\u4e00\u56de\u4e8b\u3002<\/p>\n<p>Lua \u6ca1\u6709\u5185\u7f6e\u7684 class \u5173\u952e\u5b57&#xff0c;\u4e5f\u6ca1\u6709 C&#043;&#043; \u90a3\u6837\u4e13\u95e8\u58f0\u660e\u7c7b\u7ee7\u627f\u5173\u7cfb\u7684\u8bed\u6cd5\u3002\u8fd9\u5e76\u4e0d\u610f\u5473\u7740 Lua \u65e0\u6cd5\u5b9e\u73b0\u9762\u5411\u5bf9\u8c61\u3002<\/p>\n<p>\u56e0\u4e3a Lua \u5df2\u7ecf\u63d0\u4f9b\u4e86\u4e00\u4e9b\u57fa\u7840\u80fd\u529b&#xff1a;<\/p>\n<ul>\n<li>Table&#xff1a;\u53ef\u4ee5\u4fdd\u5b58\u952e\u503c\u5bf9&#xff0c;\u5b57\u6bb5\u503c\u53ef\u4ee5\u662f\u6570\u5b57\u3001\u5b57\u7b26\u4e32\u3001\u51fd\u6570\u6216\u5176\u4ed6 Table\u3002<\/li>\n<li>\u51fd\u6570\u662f\u503c&#xff1a;\u51fd\u6570\u53ef\u4ee5\u4fdd\u5b58\u5230 Table \u4e2d&#xff0c;\u4e5f\u53ef\u4ee5\u4f5c\u4e3a\u666e\u901a\u503c\u4f20\u9012\u3002<\/li>\n<li>\u5143\u8868\u4e0e\u5143\u65b9\u6cd5&#xff1a;\u80fd\u591f\u5b9a\u5236\u5b57\u6bb5\u8bbf\u95ee\u7b49\u64cd\u4f5c\u7684\u884c\u4e3a&#xff0c;\u5c24\u5176\u662f __index\u3002<\/li>\n<li>\u8bcd\u6cd5\u4f5c\u7528\u57df\u4e0e\u95ed\u5305&#xff1a;\u53ef\u4ee5\u9690\u85cf\u5185\u90e8\u72b6\u6001&#xff0c;\u53ea\u5411\u5916\u66b4\u9732\u6307\u5b9a\u7684\u8bbf\u95ee\u63a5\u53e3\u3002<\/li>\n<\/ul>\n<p>\u6211\u4eec\u8981\u505a\u7684&#xff0c;\u5176\u5b9e\u662f\u628a\u8fd9\u4e9b\u5df2\u6709\u673a\u5236\u7ec4\u5408\u8d77\u6765&#xff0c;\u5b9e\u73b0\u5bf9\u8c61\u3001\u7c7b\u3001\u6784\u9020\u51fd\u6570\u3001\u7ee7\u627f\u3001\u591a\u6001\u7b49\u9762\u5411\u5bf9\u8c61\u6a21\u578b\u3002<\/p>\n<p>\u6240\u4ee5&#xff0c;\u5bf9\u4e8e Lua \u9762\u5411\u5bf9\u8c61&#xff0c;\u4e0d\u5e94\u8be5\u4e00\u5f00\u59cb\u5c31\u6b7b\u8bb0\u67d0\u4e00\u79cd class \u5c01\u88c5\u6a21\u677f&#xff0c;\u800c\u662f\u5148\u56de\u7b54&#xff1a;\u6bcf\u4e00\u79cd\u8bbe\u8ba1\u662f\u5728\u89e3\u51b3\u4ec0\u4e48\u95ee\u9898&#xff1f;\u53c8\u5229\u7528\u4e86 Lua \u7684\u54ea\u4e00\u79cd\u539f\u751f\u673a\u5236&#xff1f;<\/p>\n<h3>\u4e8c\u3001Table \u4e3a\u4ec0\u4e48\u5929\u7136\u5177\u5907\u8868\u793a\u5bf9\u8c61\u7684\u80fd\u529b&#xff1f;<\/h3>\n<h4>1. \u5bf9\u8c61\u53ef\u4ee5\u7406\u89e3\u4e3a\u72b6\u6001\u4e0e\u884c\u4e3a\u7684\u7ec4\u5408<\/h4>\n<p>\u5148\u4e0d\u8ba8\u8bba\u7c7b&#xff0c;\u4e5f\u4e0d\u8ba8\u8bba\u7ee7\u627f\u3002\u5047\u8bbe\u73b0\u5728\u6211\u4eec\u9700\u8981\u5728\u6e38\u620f\u670d\u52a1\u7aef\u8868\u793a\u4e00\u540d\u73a9\u5bb6\u3002<\/p>\n<p>\u4e00\u4e2a\u73a9\u5bb6\u901a\u5e38\u5177\u6709\u72b6\u6001&#xff0c;\u4f8b\u5982\u540d\u79f0\u3001\u7b49\u7ea7\u3001\u751f\u547d\u503c&#xff1b;\u540c\u65f6\u4e5f\u5177\u6709\u884c\u4e3a&#xff0c;\u4f8b\u5982\u5347\u7ea7\u3001\u53d7\u5230\u4f24\u5bb3\u3001\u663e\u793a\u4fe1\u606f\u3002<\/p>\n<p>\u6211\u4eec\u77e5\u9053&#xff0c;Table \u672c\u8d28\u4e0a\u662f\u4e00\u4e2a\u952e\u503c\u5bf9\u7684\u96c6\u5408&#xff0c;\u800c\u51fd\u6570\u53c8\u53ef\u4ee5\u4f5c\u4e3a\u5b57\u6bb5\u503c&#xff0c;\u56e0\u6b64\u5b8c\u5168\u53ef\u4ee5\u8fd9\u6837\u5b9a\u4e49&#xff1a;<\/p>\n<p><span class=\"token keyword\">local<\/span> player <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    name <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\u6218\u58eb&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    level <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    hp <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">100<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>    levelUp <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">function<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>level <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>level <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><br \/>\n    <span class=\"token keyword\">end<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>player<span class=\"token punctuation\">:<\/span><span class=\"token function\">levelUp<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>player<span class=\"token punctuation\">.<\/span>level<span class=\"token punctuation\">)<\/span>  <span class=\"token comment\">&#8212; 11<\/span><\/p>\n<p>\u8fd9\u91cc&#xff0c;name\u3001level \u548c hp \u4fdd\u5b58\u5bf9\u8c61\u7684\u72b6\u6001&#xff0c;levelUp \u5219\u4fdd\u5b58\u4e00\u4e2a\u51fd\u6570\u503c&#xff0c;\u7528\u4e8e\u64cd\u4f5c\u5bf9\u8c61\u7684\u72b6\u6001\u3002<\/p>\n<p>\u4e5f\u5c31\u662f\u8bf4&#xff0c;\u4ec5\u4ec5\u901a\u8fc7 Table &#043; \u51fd\u6570&#xff0c;\u6211\u4eec\u5c31\u5df2\u7ecf\u521b\u5efa\u51fa\u4e86\u4e00\u4e2a\u5177\u6709\u72b6\u6001\u548c\u884c\u4e3a\u7684\u5bf9\u8c61\u3002<\/p>\n<h4>2. \u65b9\u6cd5\u8c03\u7528\u4e2d\u7684\u5192\u53f7\u548c self&#xff0c;\u672c\u8d28\u4e0a\u662f\u4ec0\u4e48&#xff1f;<\/h4>\n<p>\u4e4b\u524d\u5b66\u4e60\u51fd\u6570\u65f6&#xff0c;\u6211\u4eec\u5df2\u7ecf\u8ba4\u8bc6\u8fc7 Lua \u7684 : \u8bed\u6cd5\u3002<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p><span class=\"token keyword\">function<\/span> player<span class=\"token punctuation\">:<\/span><span class=\"token function\">levelUp<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    self<span class=\"token punctuation\">.<\/span>level <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>level <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<p>\u53ef\u4ee5\u7406\u89e3\u4e3a&#xff1a;<\/p>\n<p>player<span class=\"token punctuation\">.<\/span>levelUp <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">function<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span><br \/>\n    self<span class=\"token punctuation\">.<\/span>level <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>level <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<p>\u8fd9\u91cc\u7684 self \u4e0d\u662f\u4e00\u79cd\u7279\u6b8a\u7c7b\u578b&#xff0c;\u800c\u662f\u4e00\u4e2a\u666e\u901a\u7684\u5f62\u53c2\u540d\u3002\u4f7f\u7528\u5192\u53f7\u5b9a\u4e49\u65b9\u6cd5\u65f6&#xff0c;Lua \u4f1a\u5728\u5f62\u53c2\u5217\u8868\u524d\u9762\u9690\u5f0f\u52a0\u5165 self\u3002<\/p>\n<p>\u540c\u6837&#xff1a;<\/p>\n<p>player<span class=\"token punctuation\">:<\/span><span class=\"token function\">levelUp<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u53ef\u4ee5\u7406\u89e3\u4e3a&#xff1a;<\/p>\n<p>player<span class=\"token punctuation\">.<\/span><span class=\"token function\">levelUp<\/span><span class=\"token punctuation\">(<\/span>player<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u56e0\u6b64&#xff0c;\u65b9\u6cd5\u5185\u90e8\u6267\u884c&#xff1a;<\/p>\n<p>self<span class=\"token punctuation\">.<\/span>level <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>level <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><\/p>\n<p>\u5b9e\u9645\u4e0a\u4fee\u6539\u7684\u5c31\u662f\u4f20\u5165\u5bf9\u8c61 player \u7684 level \u5b57\u6bb5\u3002<\/p>\n<p>\u5230\u8fd9\u91cc\u5e94\u8be5\u5efa\u7acb\u7b2c\u4e00\u4e2a\u8ba4\u77e5&#xff1a;<\/p>\n<p>Lua \u6700\u7b80\u5355\u7684\u5bf9\u8c61&#xff0c;\u5c31\u662f\u4e00\u4e2a\u540c\u65f6\u4fdd\u5b58\u5c5e\u6027\u548c\u51fd\u6570\u7684 Table&#xff1b;\u6240\u8c13\u5bf9\u8c61\u65b9\u6cd5&#xff0c;\u672c\u8d28\u4e0a\u8fd8\u662f\u4fdd\u5b58\u5728 Table \u4e2d\u7684\u51fd\u6570\u503c&#xff0c;\u800c self \u8ba9\u8fd9\u4e2a\u51fd\u6570\u77e5\u9053\u81ea\u5df1\u6b63\u5728\u64cd\u4f5c\u54ea\u4e2a\u5bf9\u8c61\u3002<\/p>\n<h3>\u4e09\u3001\u65e2\u7136\u53ef\u4ee5\u76f4\u63a5\u521b\u5efa\u5bf9\u8c61&#xff0c;\u4e3a\u4ec0\u4e48\u8fd8\u8981\u5f15\u5165\u201c\u7c7b\u201d&#xff1f;<\/h3>\n<h4>1. \u76f4\u63a5\u521b\u5efa\u591a\u4e2a\u5bf9\u8c61&#xff0c;\u4f1a\u4ea7\u751f\u91cd\u590d\u7684\u884c\u4e3a\u5b9a\u4e49<\/h4>\n<p>\u5047\u8bbe\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u540d\u6218\u58eb\u548c\u4e00\u540d\u6cd5\u5e08&#xff1a;<\/p>\n<p><span class=\"token keyword\">local<\/span> p1 <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    name <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\u6218\u58eb&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    level <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    levelUp <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">function<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>level <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>level <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><br \/>\n    <span class=\"token keyword\">end<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">local<\/span> p2 <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    name <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\u6cd5\u5e08&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    level <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">20<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    levelUp <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">function<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>level <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>level <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><br \/>\n    <span class=\"token keyword\">end<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u6211\u4eec\u4f1a\u53d1\u73b0&#xff0c;\u4e24\u4e2a\u73a9\u5bb6\u7684\u540d\u79f0\u3001\u7b49\u7ea7\u4e0d\u540c&#xff0c;\u4f46\u662f levelUp \u7684\u5b9e\u73b0\u903b\u8f91\u5b8c\u5168\u4e00\u81f4&#xff1a;\u90fd\u662f\u628a\u5f53\u524d\u73a9\u5bb6\u7684\u7b49\u7ea7\u52a0\u4e00\u3002<\/p>\n<p>\u8fd9\u91cc\u8fd8\u6709\u4e00\u4e2a\u7ec6\u8282&#xff1a;\u4e0a\u9762\u4e24\u4e2a\u51fd\u6570\u8868\u8fbe\u5f0f\u5206\u522b\u521b\u5efa\u4e86\u4e0d\u540c\u7684\u51fd\u6570\u503c&#xff0c;\u6240\u4ee5&#xff1a;<\/p>\n<p><span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>p1<span class=\"token punctuation\">.<\/span>levelUp <span class=\"token operator\">&#061;&#061;<\/span> p2<span class=\"token punctuation\">.<\/span>levelUp<span class=\"token punctuation\">)<\/span>  <span class=\"token comment\">&#8212; false<\/span><\/p>\n<p>\u8fd9\u610f\u5473\u7740&#xff0c;\u5982\u679c\u6211\u4eec\u4e00\u76f4\u91c7\u7528\u8fd9\u6837\u7684\u5199\u6cd5&#xff0c;\u90a3\u4e48\u6bcf\u521b\u5efa\u4e00\u4e2a\u5bf9\u8c61&#xff0c;\u90fd\u8981\u91cd\u590d\u7ec4\u7ec7\u4e00\u904d\u76f8\u540c\u7684\u516c\u5171\u884c\u4e3a\u3002<\/p>\n<p>\u6211\u4eec\u771f\u6b63\u5e0c\u671b\u7684\u662f&#xff1a;<\/p>\n<p>\u6bcf\u4e2a\u5bf9\u8c61\u4fdd\u5b58\u81ea\u5df1\u7684\u72b6\u6001&#xff0c;\u800c\u5177\u6709\u76f8\u540c\u903b\u8f91\u7684\u516c\u5171\u65b9\u6cd5\u53ea\u9700\u8981\u96c6\u4e2d\u5b9a\u4e49\u4e00\u6b21&#xff0c;\u7136\u540e\u88ab\u4e0d\u540c\u5bf9\u8c61\u5171\u540c\u4f7f\u7528\u3002<\/p>\n<p>\u5f53\u7136&#xff0c;\u4ec5\u4ec5\u4e3a\u4e86\u5171\u4eab\u4e00\u4e2a\u51fd\u6570&#xff0c;\u6211\u4eec\u4e0d\u4e00\u5b9a\u975e\u8981\u5f15\u5165\u7c7b\u3002\u4f8b\u5982&#xff1a;<\/p>\n<p><span class=\"token keyword\">local<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function\">levelUp<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span><br \/>\n    self<span class=\"token punctuation\">.<\/span>level <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>level <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<p><span class=\"token keyword\">local<\/span> p1 <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span> level <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">,<\/span> levelUp <span class=\"token operator\">&#061;<\/span> levelUp <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">local<\/span> p2 <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span> level <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">20<\/span><span class=\"token punctuation\">,<\/span> levelUp <span class=\"token operator\">&#061;<\/span> levelUp <span class=\"token punctuation\">}<\/span><\/p>\n<p>\u8fd9\u91cc\u7684\u4e24\u4e2a\u5bf9\u8c61\u5c31\u5df2\u7ecf\u4fdd\u5b58\u4e86\u540c\u4e00\u4e2a\u51fd\u6570\u503c\u3002<\/p>\n<p>\u6240\u4ee5&#xff0c;\u5171\u4eab\u51fd\u6570\u5e76\u4e0d\u662f\u7c7b\u72ec\u6709\u7684\u80fd\u529b\u3002\u5f15\u5165\u201c\u7c7b\u201d\u8fd9\u4e00\u62bd\u8c61&#xff0c;\u66f4\u91cd\u8981\u7684\u610f\u4e49\u5728\u4e8e&#xff1a;\u628a\u540c\u4e00\u7c7b\u5bf9\u8c61\u7684\u516c\u5171\u884c\u4e3a\u7edf\u4e00\u7ec4\u7ec7\u8d77\u6765&#xff0c;\u89c4\u8303\u5bf9\u8c61\u7684\u521b\u5efa\u8fc7\u7a0b&#xff0c;\u5e76\u4e3a\u7ee7\u627f\u3001\u65b9\u6cd5\u91cd\u5199\u7b49\u80fd\u529b\u63d0\u4f9b\u4e00\u4e2a\u6e05\u6670\u7684\u57fa\u7840\u3002<\/p>\n<h4>2. \u7528\u4e00\u4e2a Table \u4fdd\u5b58\u516c\u5171\u65b9\u6cd5<\/h4>\n<p>\u6211\u4eec\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a Player&#xff1a;<\/p>\n<p><span class=\"token keyword\">local<\/span> Player <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">function<\/span> Player<span class=\"token punctuation\">:<\/span><span class=\"token function\">levelUp<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    self<span class=\"token punctuation\">.<\/span>level <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>level <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<p><span class=\"token keyword\">function<\/span> Player<span class=\"token punctuation\">:<\/span><span class=\"token function\">showInfo<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">.<\/span>name<span class=\"token punctuation\">,<\/span> self<span class=\"token punctuation\">.<\/span>level<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<p>\u8fd9\u91cc\u7684 Player \u672c\u8d28\u4e0a\u4ecd\u7136\u662f\u4e00\u4e2a\u666e\u901a Table\u3002<\/p>\n<p>\u53ea\u4e0d\u8fc7\u6211\u4eec\u5728\u8bbe\u8ba1\u4e0a\u8d4b\u4e88\u4e86\u5b83\u201c\u7c7b\u201d\u7684\u89d2\u8272&#xff1a;\u96c6\u4e2d\u4fdd\u5b58\u73a9\u5bb6\u7684\u516c\u5171\u65b9\u6cd5\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\u7684\u95ee\u9898\u662f&#xff1a;\u5982\u679c\u5b9e\u4f8b\u81ea\u5df1\u4e0d\u4fdd\u5b58 levelUp\u3001showInfo&#xff0c;\u5b83\u4eec\u53c8\u8be5\u5982\u4f55\u53d6\u5f97\u8fd9\u4e9b\u51fd\u6570\u503c&#xff1f;<\/p>\n<p>\u8fd9\u5c31\u9700\u8981\u56de\u5230\u4e4b\u524d\u5b66\u4e60\u8fc7\u7684\u5143\u8868\u4e0e __index\u3002<\/p>\n<h3>\u56db\u3001\u5229\u7528 __index \u5efa\u7acb\u201c\u5b9e\u4f8b\u72b6\u6001\u72ec\u7acb&#xff0c;\u516c\u5171\u65b9\u6cd5\u5171\u4eab\u201d\u7684\u6a21\u578b<\/h3>\n<h4>1. \u5148\u4f7f\u7528\u5355\u72ec\u7684\u5143\u8868<\/h4>\n<p><span class=\"token keyword\">local<\/span> Player <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">function<\/span> Player<span class=\"token punctuation\">:<\/span><span class=\"token function\">levelUp<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    self<span class=\"token punctuation\">.<\/span>level <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>level <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<p><span class=\"token keyword\">function<\/span> Player<span class=\"token punctuation\">:<\/span><span class=\"token function\">showInfo<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">.<\/span>name<span class=\"token punctuation\">,<\/span> self<span class=\"token punctuation\">.<\/span>level<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<p><span class=\"token keyword\">local<\/span> mt <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    __index <span class=\"token operator\">&#061;<\/span> Player<br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">local<\/span> p1 <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">setmetatable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> name <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\u6218\u58eb&#034;<\/span><span class=\"token punctuation\">,<\/span> level <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> mt<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">local<\/span> p2 <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">setmetatable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> name <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\u6cd5\u5e08&#034;<\/span><span class=\"token punctuation\">,<\/span> level <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">20<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> mt<span class=\"token punctuation\">)<\/span><\/p>\n<p>p1<span class=\"token punctuation\">:<\/span><span class=\"token function\">levelUp<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\np1<span class=\"token punctuation\">:<\/span><span class=\"token function\">showInfo<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>     <span class=\"token comment\">&#8212; \u6218\u58eb  11<\/span><br \/>\np2<span class=\"token punctuation\">:<\/span><span class=\"token function\">showInfo<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>     <span class=\"token comment\">&#8212; \u6cd5\u5e08  20<\/span><\/p>\n<p>\u8fd9\u91cc\u5b58\u5728\u4e09\u4e2a\u4e0d\u540c\u7684\u89d2\u8272&#xff1a;<\/p>\n<ul>\n<li>p1\u3001p2&#xff1a;\u4e24\u4e2a\u73a9\u5bb6\u5b9e\u4f8b&#xff0c;\u4fdd\u5b58\u5404\u81ea\u7684\u72b6\u6001\u3002<\/li>\n<li>Player&#xff1a;\u7528\u4e8e\u4fdd\u5b58\u516c\u5171\u65b9\u6cd5\u7684\u7c7b Table\u3002<\/li>\n<li>mt&#xff1a;\u4e24\u4e2a\u5b9e\u4f8b\u5173\u8054\u7684\u5143\u8868&#xff0c;\u5176\u4e2d __index \u5f15\u7528 Player\u3002<\/li>\n<\/ul>\n<p>\u90a3\u4e48&#xff0c;\u5f53\u6211\u4eec\u6267\u884c&#xff1a;<\/p>\n<p>p1<span class=\"token punctuation\">:<\/span><span class=\"token function\">levelUp<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u5b9e\u9645\u8fc7\u7a0b\u662f\u4ec0\u4e48&#xff1f;<\/p>\n<p>\u9996\u5148&#xff0c;Lua \u9700\u8981\u53d6\u5f97 p1.levelUp \u5bf9\u5e94\u7684\u51fd\u6570\u503c\u3002\u4f46\u662f p1 \u4e2d\u53ea\u6709 name \u548c level&#xff0c;\u5e76\u4e0d\u5b58\u5728 levelUp \u5b57\u6bb5\u3002<\/p>\n<p>\u56e0\u6b64&#xff0c;\u5b57\u6bb5\u67e5\u627e\u4f1a\u89e6\u53d1 p1 \u5143\u8868\u4e2d\u7684 __index\u3002\u7531\u4e8e\u8fd9\u4e2a __index \u662f Table Player&#xff0c;\u4e8e\u662f Lua \u7ee7\u7eed\u5728 Player \u4e2d\u67e5\u627e levelUp&#xff0c;\u6700\u7ec8\u53d6\u5f97\u5bf9\u5e94\u7684\u51fd\u6570\u503c\u3002<\/p>\n<p>\u63a5\u7740\u6267\u884c\u65b9\u6cd5\u8c03\u7528&#xff0c;\u5c06 p1 \u4f5c\u4e3a self \u4f20\u5165&#xff1a;<\/p>\n<p>Player<span class=\"token punctuation\">.<\/span><span class=\"token function\">levelUp<\/span><span class=\"token punctuation\">(<\/span>p1<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u6240\u4ee5&#xff0c;\u867d\u7136\u6267\u884c\u7684\u662f Player \u91cc\u9762\u4fdd\u5b58\u7684\u51fd\u6570&#xff0c;\u4f46\u4fee\u6539\u7684\u4ecd\u7136\u662f p1.level&#xff0c;\u4e0d\u4f1a\u5f71\u54cd p2\u3002<\/p>\n<p>\u8fd9\u91cc\u4e00\u5b9a\u8981\u533a\u5206\u4e24\u4e2a\u8fc7\u7a0b&#xff1a;<\/p>\n<li>__index \u8d1f\u8d23\u5b57\u6bb5\u67e5\u627e&#xff0c;\u8ba9\u5b9e\u4f8b\u627e\u5230\u516c\u5171\u65b9\u6cd5\u7684\u51fd\u6570\u503c\u3002<\/li>\n<li>\u627e\u5230\u51fd\u6570\u4ee5\u540e&#xff0c;\u624d\u6309\u7167\u666e\u901a\u7684\u51fd\u6570\u8c03\u7528\u89c4\u5219\u6267\u884c&#xff0c;\u5e76\u628a\u5b9e\u4f8b\u4f20\u7ed9 self\u3002<\/li>\n<p>\u6362\u53e5\u8bdd\u8bf4&#xff0c;__index \u672c\u8eab\u5e76\u4e0d\u662f\u4e13\u95e8\u63a7\u5236\u51fd\u6570\u8c03\u7528\u7684\u673a\u5236&#xff0c;\u5b83\u53ea\u662f\u5728\u627e\u4e0d\u5230\u5b57\u6bb5\u65f6\u63d0\u4f9b\u67e5\u627e\u89c4\u5219\u3002\u627e\u5230\u7684\u662f\u51fd\u6570\u503c&#xff0c;\u6211\u4eec\u5c31\u53ef\u4ee5\u8c03\u7528&#xff1b;\u627e\u5230\u7684\u662f\u6570\u5b57\u3001\u5b57\u7b26\u4e32&#xff0c;\u4e5f\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u3002<\/p>\n<h4>2. \u4e3a\u4ec0\u4e48\u5e38\u89c1\u5199\u6cd5\u662f Player.__index &#061; Player&#xff1f;<\/h4>\n<p>\u4e0a\u9762\u7684 mt \u53ea\u6709\u4e00\u4e2a\u4e3b\u8981\u7528\u9014&#xff1a;\u544a\u8bc9\u5b9e\u4f8b&#xff0c;\u5b57\u6bb5\u627e\u4e0d\u5230\u65f6\u5e94\u8be5\u53bb Player \u4e2d\u67e5\u627e\u3002<\/p>\n<p>\u4f46\u6211\u4eec\u77e5\u9053&#xff0c;\u5143\u8868\u672c\u8eab\u4e5f\u53ea\u662f\u4e00\u4e2a\u666e\u901a Table\u3002\u56e0\u6b64&#xff0c;\u6211\u4eec\u5b8c\u5168\u53ef\u4ee5\u8ba9 Player \u540c\u65f6\u627f\u62c5\u201c\u7c7b\u201d\u548c\u201c\u5143\u8868\u201d\u4e24\u4e2a\u89d2\u8272&#xff1a;<\/p>\n<p><span class=\"token keyword\">local<\/span> Player <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><br \/>\nPlayer<span class=\"token punctuation\">.<\/span>__index <span class=\"token operator\">&#061;<\/span> Player<\/p>\n<p><span class=\"token keyword\">function<\/span> Player<span class=\"token punctuation\">:<\/span><span class=\"token function\">levelUp<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    self<span class=\"token punctuation\">.<\/span>level <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>level <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<p><span class=\"token keyword\">local<\/span> p1 <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">setmetatable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> level <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> Player<span class=\"token punctuation\">)<\/span><br \/>\np1<span class=\"token punctuation\">:<\/span><span class=\"token function\">levelUp<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>p1<span class=\"token punctuation\">.<\/span>level<span class=\"token punctuation\">)<\/span>  <span class=\"token comment\">&#8212; 11<\/span><\/p>\n<p>\u8fd9\u91cc&#xff1a;<\/p>\n<p>Player<span class=\"token punctuation\">.<\/span>__index <span class=\"token operator\">&#061;<\/span> Player<\/p>\n<p>\u53ea\u662f\u7ed9 Player \u6dfb\u52a0\u4e86\u4e00\u4e2a\u5b57\u6bb5&#xff0c;\u8ba9\u8fd9\u4e2a\u5b57\u6bb5\u5f15\u7528 Player \u81ea\u5df1\u3002<\/p>\n<p>\u800c&#xff1a;<\/p>\n<p><span class=\"token function\">setmetatable<\/span><span class=\"token punctuation\">(<\/span>p1<span class=\"token punctuation\">,<\/span> Player<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u5219\u662f\u628a Player \u8bbe\u7f6e\u4e3a p1 \u7684\u5143\u8868\u3002<\/p>\n<p>\u4e8e\u662f Player \u540c\u65f6\u627f\u62c5\u4e24\u79cd\u89d2\u8272&#xff1a;\u4e00\u65b9\u9762\u4fdd\u5b58\u516c\u5171\u65b9\u6cd5&#xff0c;\u53e6\u4e00\u65b9\u9762\u901a\u8fc7 __index \u4e3a\u5b9e\u4f8b\u63d0\u4f9b\u65b9\u6cd5\u67e5\u627e\u89c4\u5219\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/11\/20261104151705-6aeb4c71dbcc0.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u8fd9\u91cc\u5e76\u6ca1\u6709\u51fa\u73b0\u4ec0\u4e48\u65b0\u7684\u201c\u7c7b\u7c7b\u578b\u201d\u3002\u4ece Lua \u8bed\u8a00\u7684\u89d2\u5ea6\u770b&#xff0c;Player \u59cb\u7ec8\u53ea\u662f\u4e00\u4e2a Table&#xff0c;\u53ea\u4e0d\u8fc7\u5728\u6211\u4eec\u7684\u8bbe\u8ba1\u4e2d\u627f\u62c5\u4e86\u4e0d\u540c\u804c\u8d23\u3002<\/p>\n<p>\u53e6\u5916\u9700\u8981\u6ce8\u610f&#xff0c;\u5355\u72ec\u6267\u884c Player.__index &#061; Player \u5e76\u4e0d\u4f1a\u8ba9\u6240\u6709 Table \u81ea\u52a8\u62e5\u6709 Player \u7684\u65b9\u6cd5\u3002\u53ea\u6709\u5b9e\u4f8b\u5efa\u7acb\u4e86\u76f8\u5e94\u7684\u5143\u8868\u5173\u7cfb&#xff0c;\u540e\u7eed\u7684\u5b57\u6bb5\u67e5\u627e\u624d\u4f1a\u6309\u7167\u8fd9\u5957\u89c4\u5219\u8fdb\u884c\u3002<\/p>\n<h3>\u4e94\u3001\u6784\u9020\u51fd\u6570&#xff1a;\u4e3a\u4ec0\u4e48\u9700\u8981\u7edf\u4e00\u5c01\u88c5\u5bf9\u8c61\u7684\u521b\u5efa\u8fc7\u7a0b&#xff1f;<\/h3>\n<h4>1. \u76f4\u63a5\u521b\u5efa\u5b9e\u4f8b\u5b58\u5728\u91cd\u590d\u64cd\u4f5c<\/h4>\n<p>\u5230\u8fd9\u91cc&#xff0c;\u6211\u4eec\u5df2\u7ecf\u80fd\u591f\u521b\u5efa\u5171\u4eab\u516c\u5171\u65b9\u6cd5\u7684\u73a9\u5bb6\u5b9e\u4f8b&#xff1a;<\/p>\n<p><span class=\"token keyword\">local<\/span> p1 <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">setmetatable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> name <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\u6218\u58eb&#034;<\/span><span class=\"token punctuation\">,<\/span> level <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> Player<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">local<\/span> p2 <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">setmetatable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> name <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\u6cd5\u5e08&#034;<\/span><span class=\"token punctuation\">,<\/span> level <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">20<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> Player<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u8fd9\u79cd\u5199\u6cd5\u6ca1\u6709\u95ee\u9898&#xff0c;\u4f46\u662f\u6bcf\u6b21\u521b\u5efa\u73a9\u5bb6&#xff0c;\u90fd\u9700\u8981\u91cd\u590d\u5b8c\u6210\u51e0\u4ef6\u4e8b\u60c5&#xff1a;\u521b\u5efa Table\u3001\u521d\u59cb\u5316\u5b57\u6bb5&#xff0c;\u4ee5\u53ca\u5173\u8054\u5143\u8868\u3002<\/p>\n<p>\u66f4\u91cd\u8981\u7684\u662f&#xff0c;\u5982\u679c\u4ee5\u540e\u521b\u5efa\u73a9\u5bb6\u8fd8\u9700\u8981\u521d\u59cb\u5316\u751f\u547d\u503c\u3001\u68c0\u67e5\u7b49\u7ea7\u662f\u5426\u5408\u6cd5\u3001\u8bbe\u7f6e\u9ed8\u8ba4\u72b6\u6001&#xff0c;\u90a3\u4e48\u8fd9\u4e9b\u903b\u8f91\u5c31\u53ef\u80fd\u6563\u843d\u5728\u4e0d\u540c\u7684\u521b\u5efa\u4f4d\u7f6e\u3002<\/p>\n<p>\u56e0\u6b64&#xff0c;\u6211\u4eec\u5e0c\u671b\u5c06\u5bf9\u8c61\u521b\u5efa\u7684\u89c4\u5219\u7edf\u4e00\u5c01\u88c5\u8d77\u6765&#xff0c;\u5bf9\u5916\u63d0\u4f9b\u4e00\u4e2a\u521b\u5efa\u5165\u53e3&#xff1a;<\/p>\n<p><span class=\"token keyword\">local<\/span> p1 <span class=\"token operator\">&#061;<\/span> Player<span class=\"token punctuation\">:<\/span><span class=\"token function\">new<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6218\u58eb&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">local<\/span> p2 <span class=\"token operator\">&#061;<\/span> Player<span class=\"token punctuation\">:<\/span><span class=\"token function\">new<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6cd5\u5e08&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">20<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u8fd9\u5c31\u5f15\u51fa\u4e86\u6784\u9020\u51fd\u6570\u3002<\/p>\n<h4>2. Lua \u7684\u6784\u9020\u51fd\u6570\u672c\u8d28\u4e0a\u4ecd\u7136\u662f\u666e\u901a\u51fd\u6570<\/h4>\n<p><span class=\"token keyword\">local<\/span> Player <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><br \/>\nPlayer<span class=\"token punctuation\">.<\/span>__index <span class=\"token operator\">&#061;<\/span> Player<\/p>\n<p><span class=\"token keyword\">function<\/span> Player<span class=\"token punctuation\">:<\/span><span class=\"token function\">new<\/span><span class=\"token punctuation\">(<\/span>name<span class=\"token punctuation\">,<\/span> level<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">local<\/span> obj <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        name <span class=\"token operator\">&#061;<\/span> name<span class=\"token punctuation\">,<\/span><br \/>\n        level <span class=\"token operator\">&#061;<\/span> level<br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token function\">setmetatable<\/span><span class=\"token punctuation\">(<\/span>obj<span class=\"token punctuation\">,<\/span> self<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> obj<br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<p><span class=\"token keyword\">function<\/span> Player<span class=\"token punctuation\">:<\/span><span class=\"token function\">showInfo<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">.<\/span>name<span class=\"token punctuation\">,<\/span> self<span class=\"token punctuation\">.<\/span>level<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<p><span class=\"token keyword\">local<\/span> p1 <span class=\"token operator\">&#061;<\/span> Player<span class=\"token punctuation\">:<\/span><span class=\"token function\">new<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6218\u58eb&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">local<\/span> p2 <span class=\"token operator\">&#061;<\/span> Player<span class=\"token punctuation\">:<\/span><span class=\"token function\">new<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6cd5\u5e08&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">20<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>p1<span class=\"token punctuation\">:<\/span><span class=\"token function\">showInfo<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\">&#8212; \u6218\u58eb  10<\/span><br \/>\np2<span class=\"token punctuation\">:<\/span><span class=\"token function\">showInfo<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\">&#8212; \u6cd5\u5e08  20<\/span><\/p>\n<p>\u8fd9\u91cc\u5fc5\u987b\u660e\u786e&#xff1a;new \u4e0d\u662f Lua \u7684\u5173\u952e\u5b57&#xff0c;\u4e5f\u4e0d\u662f Lua \u5185\u7f6e\u7684\u7279\u6b8a\u6784\u9020\u51fd\u6570\u3002<\/p>\n<p>\u5b83\u53ea\u662f\u6211\u4eec\u81ea\u5df1\u5b9a\u4e49\u7684\u666e\u901a\u65b9\u6cd5&#xff0c;\u53ea\u4e0d\u8fc7\u7531\u6211\u4eec\u7ea6\u5b9a\u5b83\u8d1f\u8d23\u521b\u5efa\u5bf9\u8c61\u3002<\/p>\n<p>\u5f53\u6267\u884c&#xff1a;<\/p>\n<p><span class=\"token keyword\">local<\/span> p1 <span class=\"token operator\">&#061;<\/span> Player<span class=\"token punctuation\">:<\/span><span class=\"token function\">new<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6218\u58eb&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u53ef\u4ee5\u6309\u7167\u4e0b\u9762\u7684\u6b65\u9aa4\u7406\u89e3&#xff1a;<\/p>\n<p>Player:new(&#034;\u6218\u58eb&#034;, 10)<br \/>\n    \u2193<br \/>\n\u7b49\u4ef7\u4e8e\u8c03\u7528 Player.new(Player, &#034;\u6218\u58eb&#034;, 10)<br \/>\n    \u2193<br \/>\nself \u5f15\u7528 Player<br \/>\n    \u2193<br \/>\n\u521b\u5efa\u65b0\u7684 Table obj&#xff0c;\u5e76\u521d\u59cb\u5316 name\u3001level<br \/>\n    \u2193<br \/>\nsetmetatable(obj, self)<br \/>\n    \u2193<br \/>\n\u628a Player \u8bbe\u7f6e\u4e3a obj \u7684\u5143\u8868<br \/>\n    \u2193<br \/>\nreturn obj<br \/>\n    \u2193<br \/>\np1 \u5f15\u7528\u8fd9\u4e2a\u65b0\u521b\u5efa\u7684 Table<\/p>\n<p>\u8fd9\u91cc\u987a\u4fbf\u8865\u5145\u4e00\u4e0b setmetatable \u7684\u8fd4\u56de\u503c\u3002\u5b83\u6210\u529f\u6267\u884c\u4ee5\u540e&#xff0c;\u8fd4\u56de\u7684\u5c31\u662f\u7b2c\u4e00\u4e2a\u53c2\u6570&#xff0c;\u5373\u539f\u6765\u7684 Table \u672c\u8eab&#xff0c;\u5e76\u4e0d\u4f1a\u53e6\u5916\u521b\u5efa\u4e00\u4e2a Table\u3002<\/p>\n<p>\u56e0\u6b64&#xff1a;<\/p>\n<p><span class=\"token keyword\">local<\/span> obj <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span> name <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\u8d75\u4e91&#034;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">local<\/span> ret <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">setmetatable<\/span><span class=\"token punctuation\">(<\/span>obj<span class=\"token punctuation\">,<\/span> Player<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>obj <span class=\"token operator\">&#061;&#061;<\/span> ret<span class=\"token punctuation\">)<\/span>  <span class=\"token comment\">&#8212; true<\/span><\/p>\n<p>\u4e5f\u53ef\u4ee5\u628a\u521b\u5efa\u4e0e\u5173\u8054\u5143\u8868\u5199\u6210&#xff1a;<\/p>\n<p><span class=\"token keyword\">local<\/span> obj <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">setmetatable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> name <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\u8d75\u4e91&#034;<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> Player<span class=\"token punctuation\">)<\/span><\/p>\n<h3>\u516d\u3001\u7ee7\u627f&#xff1a;\u4ece\u201c\u5b9e\u4f8b\u627e\u7c7b\u201d\u8fc7\u6e21\u5230\u201c\u5b50\u7c7b\u627e\u7236\u7c7b\u201d<\/h3>\n<h4>1. \u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0\u7ee7\u627f\u9700\u6c42&#xff1f;<\/h4>\n<p>\u524d\u9762\u6211\u4eec\u5df2\u7ecf\u5b9a\u4e49\u4e86 Player \u7c7b\u3002\u73b0\u5728\u5047\u8bbe\u6211\u4eec\u9700\u8981\u4e00\u4e2a\u4e13\u95e8\u7684\u6218\u58eb\u7c7b Warrior\u3002<\/p>\n<p>\u6218\u58eb\u4e5f\u662f\u73a9\u5bb6&#xff0c;\u6240\u4ee5\u5b83\u7406\u5e94\u5177\u6709\u73a9\u5bb6\u5171\u6709\u7684\u884c\u4e3a&#xff0c;\u4f8b\u5982 showInfo\u3002\u540c\u65f6&#xff0c;\u6218\u58eb\u8fd8\u53ef\u80fd\u62e5\u6709\u81ea\u5df1\u7279\u6709\u7684 attack \u65b9\u6cd5\u3002<\/p>\n<p>\u663e\u7136&#xff0c;\u6211\u4eec\u4e0d\u5e0c\u671b\u5728 Warrior \u91cc\u9762\u628a Player.showInfo \u518d\u91cd\u5199\u4e00\u4efd\u3002<\/p>\n<p>\u90a3\u4e48&#xff0c;\u80fd\u4e0d\u80fd\u8ba9 Warrior \u5728\u627e\u4e0d\u5230\u67d0\u4e2a\u65b9\u6cd5\u65f6&#xff0c;\u7ee7\u7eed\u53bb Player \u4e2d\u67e5\u627e&#xff1f;<\/p>\n<p>\u8fd9\u4e2a\u95ee\u9898\u5176\u5b9e\u5f88\u719f\u6089&#xff1a;\u4e4b\u524d\u5b9e\u4f8b\u627e\u4e0d\u5230\u516c\u5171\u65b9\u6cd5\u65f6&#xff0c;\u5c31\u662f\u901a\u8fc7 __index \u5230\u7c7b\u4e2d\u67e5\u627e\u7684\u3002<\/p>\n<p>\u6240\u4ee5\u6211\u4eec\u5b8c\u5168\u53ef\u4ee5\u628a\u540c\u6837\u7684\u5b57\u6bb5\u67e5\u627e\u673a\u5236\u518d\u7528\u4e00\u6b21\u3002<\/p>\n<h4>2. \u5efa\u7acb\u5b50\u7c7b\u4e0e\u7236\u7c7b\u7684\u67e5\u627e\u5173\u7cfb<\/h4>\n<p>\u4e0b\u9762\u662f\u4e00\u6bb5\u5b8c\u6574\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token keyword\">local<\/span> Player <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><br \/>\nPlayer<span class=\"token punctuation\">.<\/span>__index <span class=\"token operator\">&#061;<\/span> Player<\/p>\n<p><span class=\"token keyword\">function<\/span> Player<span class=\"token punctuation\">:<\/span><span class=\"token function\">new<\/span><span class=\"token punctuation\">(<\/span>name<span class=\"token punctuation\">,<\/span> level<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">local<\/span> obj <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        name <span class=\"token operator\">&#061;<\/span> name<span class=\"token punctuation\">,<\/span><br \/>\n        level <span class=\"token operator\">&#061;<\/span> level<br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token function\">setmetatable<\/span><span class=\"token punctuation\">(<\/span>obj<span class=\"token punctuation\">,<\/span> self<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> obj<br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<p><span class=\"token keyword\">function<\/span> Player<span class=\"token punctuation\">:<\/span><span class=\"token function\">showInfo<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">.<\/span>name<span class=\"token punctuation\">,<\/span> self<span class=\"token punctuation\">.<\/span>level<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<p><span class=\"token comment\">&#8212; \u5b9a\u4e49\u6218\u58eb\u7c7b<\/span><br \/>\n<span class=\"token keyword\">local<\/span> Warrior <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><br \/>\nWarrior<span class=\"token punctuation\">.<\/span>__index <span class=\"token operator\">&#061;<\/span> Warrior<\/p>\n<p><span class=\"token comment\">&#8212; Warrior \u4e2d\u627e\u4e0d\u5230\u5b57\u6bb5\u65f6&#xff0c;\u7ee7\u7eed\u5230 Player \u4e2d\u67e5\u627e<\/span><br \/>\n<span class=\"token function\">setmetatable<\/span><span class=\"token punctuation\">(<\/span>Warrior<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    __index <span class=\"token operator\">&#061;<\/span> Player<br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">function<\/span> Warrior<span class=\"token punctuation\">:<\/span><span class=\"token function\">attack<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">.<\/span>name <span class=\"token operator\">..<\/span> <span class=\"token string\">&#034;\u53d1\u8d77\u653b\u51fb&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<p><span class=\"token keyword\">local<\/span> w1 <span class=\"token operator\">&#061;<\/span> Warrior<span class=\"token punctuation\">:<\/span><span class=\"token function\">new<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u8d75\u4e91&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>w1<span class=\"token punctuation\">:<\/span><span class=\"token function\">showInfo<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\">&#8212; \u8d75\u4e91  10<\/span><br \/>\nw1<span class=\"token punctuation\">:<\/span><span class=\"token function\">attack<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>    <span class=\"token comment\">&#8212; \u8d75\u4e91\u53d1\u8d77\u653b\u51fb<\/span><\/p>\n<p>\u91cd\u70b9\u5173\u6ce8\u4e24\u6bb5&#xff1a;<\/p>\n<p>Warrior<span class=\"token punctuation\">.<\/span>__index <span class=\"token operator\">&#061;<\/span> Warrior<\/p>\n<p>\u4ee5\u53ca&#xff1a;<\/p>\n<p><span class=\"token function\">setmetatable<\/span><span class=\"token punctuation\">(<\/span>Warrior<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    __index <span class=\"token operator\">&#061;<\/span> Player<br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u7b2c\u4e00\u6bb5\u7528\u4e8e\u8ba9 Warrior \u7684\u5b9e\u4f8b\u5728\u627e\u4e0d\u5230\u5b57\u6bb5\u65f6\u53bb Warrior \u4e2d\u67e5\u627e&#xff1b;\u7b2c\u4e8c\u6bb5\u5219\u7528\u4e8e\u8ba9 Warrior \u8fd9\u4e2a Table \u5728\u627e\u4e0d\u5230\u5b57\u6bb5\u65f6&#xff0c;\u8fdb\u4e00\u6b65\u53bb Player \u4e2d\u67e5\u627e\u3002<\/p>\n<p>\u6ce8\u610f&#xff0c;\u8fd9\u4e0d\u662f\u8ba9\u67d0\u4e2a\u5b9e\u4f8b\u540c\u65f6\u76f4\u63a5\u5173\u8054\u4e24\u4e2a\u5143\u8868&#xff0c;\u800c\u662f\u5728\u4e0d\u540c Table \u4e4b\u95f4\u5efa\u7acb\u9010\u7ea7\u7684\u5143\u8868\u67e5\u627e\u5173\u7cfb\u3002<\/p>\n<h4>3. \u4e3a\u4ec0\u4e48 Warrior \u6ca1\u6709 new&#xff0c;\u4e5f\u80fd\u8c03\u7528 Warrior:new()&#xff1f;<\/h4>\n<p>\u8fd9\u4e5f\u662f\u7ee7\u627f\u673a\u5236\u7279\u522b\u503c\u5f97\u7406\u89e3\u7684\u5730\u65b9\u3002<\/p>\n<p>\u6267\u884c&#xff1a;<\/p>\n<p><span class=\"token keyword\">local<\/span> w1 <span class=\"token operator\">&#061;<\/span> Warrior<span class=\"token punctuation\">:<\/span><span class=\"token function\">new<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u8d75\u4e91&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u9700\u8981\u5148\u67e5\u627e Warrior.new\u3002\u7136\u800c&#xff0c;Warrior \u81ea\u8eab\u5e76\u6ca1\u6709\u5b9a\u4e49 new\u3002<\/p>\n<p>\u7531\u4e8e Warrior \u7684\u5143\u8868\u5177\u6709 __index &#061; Player&#xff0c;\u4e8e\u662f\u5b57\u6bb5\u67e5\u627e\u4f1a\u56de\u9000\u5230 Player.new&#xff0c;\u6700\u7ec8\u83b7\u5f97\u7236\u7c7b\u4e2d\u5b9a\u4e49\u7684\u6784\u9020\u51fd\u6570\u3002<\/p>\n<p>\u4f46\u662f&#xff0c;\u65b9\u6cd5\u4ece\u54ea\u91cc\u627e\u5230&#xff0c;\u548c\u8c03\u7528\u65f6 self \u5f15\u7528\u8c01&#xff0c;\u662f\u4e24\u56de\u4e8b\u3002<\/p>\n<p>\u56e0\u4e3a\u8c03\u7528\u8868\u8fbe\u5f0f\u4f7f\u7528\u7684\u662f Warrior:new(&#8230;)&#xff0c;\u4f20\u5165\u7684 self \u4ecd\u7136\u662f Warrior&#xff0c;\u800c\u4e0d\u662f Player\u3002<\/p>\n<p>\u6240\u4ee5&#xff0c;\u7236\u7c7b\u5b9a\u4e49\u7684 new \u5185\u90e8\u6267\u884c&#xff1a;<\/p>\n<p><span class=\"token function\">setmetatable<\/span><span class=\"token punctuation\">(<\/span>obj<span class=\"token punctuation\">,<\/span> self<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u5b9e\u9645\u4e0a\u7b49\u4ef7\u4e8e&#xff1a;<\/p>\n<p><span class=\"token function\">setmetatable<\/span><span class=\"token punctuation\">(<\/span>obj<span class=\"token punctuation\">,<\/span> Warrior<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u6700\u7ec8\u521b\u5efa\u7684\u5b9e\u4f8b w1&#xff0c;\u5173\u8054\u7684\u662f\u5b50\u7c7b Warrior&#xff0c;\u8fd9\u4e5f\u89e3\u91ca\u4e86\u524d\u9762\u4e3a\u4ec0\u4e48\u5efa\u8bae\u5728\u6784\u9020\u51fd\u6570\u4e2d\u4f7f\u7528 self\u3002<\/p>\n<h4>4. \u5b50\u7c7b\u5b9e\u4f8b\u8c03\u7528\u7ee7\u627f\u65b9\u6cd5\u7684\u5b8c\u6574\u67e5\u627e\u94fe<\/h4>\n<p>\u63a5\u4e0b\u6765\u6267\u884c&#xff1a;<\/p>\n<p>w1<span class=\"token punctuation\">:<\/span><span class=\"token function\">showInfo<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u8fd9\u91cc\u7684\u67e5\u627e\u8fc7\u7a0b\u5982\u4e0b&#xff1a;<\/p>\n<p>w1.showInfo<br \/>\n    \u2193<br \/>\nw1 \u81ea\u8eab\u6ca1\u6709 showInfo<br \/>\n    \u2193<br \/>\nw1 \u7684\u5143\u8868\u662f Warrior<br \/>\n    \u2193<br \/>\nWarrior.__index &#061; Warrior<br \/>\n    \u2193<br \/>\n\u7ee7\u7eed\u8bbf\u95ee Warrior.showInfo<br \/>\n    \u2193<br \/>\nWarrior \u81ea\u8eab\u4e5f\u6ca1\u6709 showInfo<br \/>\n    \u2193<br \/>\nWarrior \u7684\u5143\u8868\u4e2d __index &#061; Player<br \/>\n    \u2193<br \/>\n\u7ee7\u7eed\u8bbf\u95ee Player.showInfo<br \/>\n    \u2193<br \/>\n\u627e\u5230\u51fd\u6570\u503c<br \/>\n    \u2193<br \/>\n\u8c03\u7528 Player.showInfo(w1)<br \/>\n    \u2193<br \/>\n\u7236\u7c7b\u65b9\u6cd5\u8bfb\u53d6\u7684\u662f w1 \u7684 name\u3001level<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/11\/20261104151706-6aeb4c721ec47.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u8fd9\u91cc\u6211\u4eec\u5e94\u8be5\u5efa\u7acb\u4e00\u4e2a\u5f88\u91cd\u8981\u7684\u8ba4\u77e5&#xff1a;<\/p>\n<p>Lua \u5e38\u89c1\u7684\u7c7b\u7ee7\u627f&#xff0c;\u5e76\u4e0d\u662f\u628a\u7236\u7c7b\u65b9\u6cd5\u590d\u5236\u5230\u5b50\u7c7b&#xff0c;\u800c\u662f\u901a\u8fc7 __index \u5efa\u7acb\u591a\u7ea7\u5b57\u6bb5\u67e5\u627e\u94fe\u3002\u5f53\u5b50\u7c7b\u4e0d\u5b58\u5728\u76ee\u6807\u5b57\u6bb5\u65f6&#xff0c;\u518d\u5c1d\u8bd5\u4ece\u7236\u7c7b\u4e2d\u53d6\u5f97\u3002<\/p>\n<h3>\u4e03\u3001\u65b9\u6cd5\u91cd\u5199\u4e0e\u591a\u6001&#xff1a;\u4e3a\u4ec0\u4e48\u76f8\u540c\u7684\u65b9\u6cd5\u8c03\u7528\u4f1a\u6709\u4e0d\u540c\u7684\u7ed3\u679c&#xff1f;<\/h3>\n<h4>1. \u65b9\u6cd5\u91cd\u5199&#xff1a;\u5b50\u7c7b\u4e0d\u60f3\u5b8c\u5168\u4f7f\u7528\u7236\u7c7b\u7684\u5b9e\u73b0<\/h4>\n<p>\u7ee7\u627f\u53ef\u4ee5\u590d\u7528\u7236\u7c7b\u63d0\u4f9b\u7684\u65b9\u6cd5&#xff0c;\u4f46\u6709\u4e9b\u884c\u4e3a\u867d\u7136\u540d\u5b57\u76f8\u540c&#xff0c;\u4e0d\u540c\u7c7b\u578b\u7684\u5bf9\u8c61\u5374\u5e0c\u671b\u91c7\u7528\u4e0d\u540c\u5b9e\u73b0\u3002<\/p>\n<p>\u4f8b\u5982&#xff0c;\u7236\u7c7b\u7684 attack \u8868\u793a\u666e\u901a\u653b\u51fb&#xff0c;\u6218\u58eb\u5219\u9700\u8981\u6267\u884c\u81ea\u5df1\u7684\u653b\u51fb\u903b\u8f91\u3002<\/p>\n<p><span class=\"token keyword\">local<\/span> Player <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><br \/>\nPlayer<span class=\"token punctuation\">.<\/span>__index <span class=\"token operator\">&#061;<\/span> Player<\/p>\n<p><span class=\"token keyword\">function<\/span> Player<span class=\"token punctuation\">:<\/span><span class=\"token function\">attack<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u73a9\u5bb6\u666e\u901a\u653b\u51fb&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<p><span class=\"token keyword\">local<\/span> Warrior <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><br \/>\nWarrior<span class=\"token punctuation\">.<\/span>__index <span class=\"token operator\">&#061;<\/span> Warrior<\/p>\n<p><span class=\"token function\">setmetatable<\/span><span class=\"token punctuation\">(<\/span>Warrior<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">{<\/span> __index <span class=\"token operator\">&#061;<\/span> Player <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">function<\/span> Warrior<span class=\"token punctuation\">:<\/span><span class=\"token function\">attack<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6218\u58eb\u6325\u5251\u653b\u51fb&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<p><span class=\"token keyword\">local<\/span> w1 <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">setmetatable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> Warrior<span class=\"token punctuation\">)<\/span><br \/>\nw1<span class=\"token punctuation\">:<\/span><span class=\"token function\">attack<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\">&#8212; \u6218\u58eb\u6325\u5251\u653b\u51fb<\/span><\/p>\n<p>\u8fd9\u91cc Player \u4e0e Warrior \u90fd\u5b9a\u4e49\u4e86 attack\u3002\u5f53\u6267\u884c w1:attack() \u65f6&#xff1a;<\/p>\n<p>w1.attack<br \/>\n    \u2193<br \/>\nw1 \u6ca1\u6709 attack<br \/>\n    \u2193<br \/>\n\u901a\u8fc7 __index \u67e5\u627e Warrior.attack<br \/>\n    \u2193<br \/>\nWarrior \u4e2d\u5b58\u5728 attack<br \/>\n    \u2193<br \/>\n\u627e\u5230\u51fd\u6570&#xff0c;\u505c\u6b62\u67e5\u627e<br \/>\n    \u2193<br \/>\n\u8c03\u7528 Warrior.attack(w1)<\/p>\n<p>\u6240\u4ee5&#xff0c;\u7236\u7c7b\u4e2d\u7684 Player.attack \u6839\u672c\u4e0d\u9700\u8981\u88ab\u4fee\u6539&#xff1b;\u53ea\u662f\u56e0\u4e3a\u5b50\u7c7b\u4e2d\u5df2\u7ecf\u5b58\u5728\u540c\u540d\u51fd\u6570&#xff0c;\u5b57\u6bb5\u67e5\u627e\u4f18\u5148\u547d\u4e2d\u4e86\u5b50\u7c7b\u7684\u5b9e\u73b0\u3002<\/p>\n<p>\u8fd9\u5c31\u662f\u65b9\u6cd5\u91cd\u5199&#xff1a;\u5b50\u7c7b\u5b9a\u4e49\u540c\u540d\u65b9\u6cd5&#xff0c;\u8ba9\u5b50\u7c7b\u5b9e\u4f8b\u4f18\u5148\u4f7f\u7528\u81ea\u5df1\u7684\u5b9e\u73b0\u3002<\/p>\n<h4>2. \u591a\u6001&#xff1a;\u540c\u4e00\u8c03\u7528\u65b9\u5f0f&#xff0c;\u6839\u636e\u5b9e\u9645\u5bf9\u8c61\u6267\u884c\u4e0d\u540c\u65b9\u6cd5<\/h4>\n<p>\u73b0\u5728\u518d\u5b9a\u4e49\u4e00\u4e2a\u6cd5\u5e08\u7c7b&#xff1a;<\/p>\n<p><span class=\"token keyword\">local<\/span> Mage <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><br \/>\nMage<span class=\"token punctuation\">.<\/span>__index <span class=\"token operator\">&#061;<\/span> Mage<\/p>\n<p><span class=\"token function\">setmetatable<\/span><span class=\"token punctuation\">(<\/span>Mage<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">{<\/span> __index <span class=\"token operator\">&#061;<\/span> Player <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">function<\/span> Mage<span class=\"token punctuation\">:<\/span><span class=\"token function\">attack<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6cd5\u5e08\u91ca\u653e\u9b54\u6cd5&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<p><span class=\"token keyword\">local<\/span> w1 <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">setmetatable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> Warrior<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">local<\/span> m1 <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">setmetatable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> Mage<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">local<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function\">doAttack<\/span><span class=\"token punctuation\">(<\/span>obj<span class=\"token punctuation\">)<\/span><br \/>\n    obj<span class=\"token punctuation\">:<\/span><span class=\"token function\">attack<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<p><span class=\"token function\">doAttack<\/span><span class=\"token punctuation\">(<\/span>w1<span class=\"token punctuation\">)<\/span>  <span class=\"token comment\">&#8212; \u6218\u58eb\u6325\u5251\u653b\u51fb<\/span><br \/>\n<span class=\"token function\">doAttack<\/span><span class=\"token punctuation\">(<\/span>m1<span class=\"token punctuation\">)<\/span>  <span class=\"token comment\">&#8212; \u6cd5\u5e08\u91ca\u653e\u9b54\u6cd5<\/span><\/p>\n<p>\u6ce8\u610f doAttack&#xff1a;<\/p>\n<p><span class=\"token keyword\">local<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function\">doAttack<\/span><span class=\"token punctuation\">(<\/span>obj<span class=\"token punctuation\">)<\/span><br \/>\n    obj<span class=\"token punctuation\">:<\/span><span class=\"token function\">attack<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<p>\u8fd9\u4e2a\u51fd\u6570\u5e76\u4e0d\u77e5\u9053\u4f20\u5165\u7684\u662f\u6218\u58eb\u8fd8\u662f\u6cd5\u5e08&#xff0c;\u5b83\u53ea\u6309\u7167\u7edf\u4e00\u7684\u65b9\u5f0f\u8c03\u7528 attack\u3002<\/p>\n<p>\u4f46\u8fd0\u884c\u65f6 obj \u5f15\u7528\u7684\u5bf9\u8c61\u4e0d\u540c&#xff0c;\u67e5\u627e\u5230\u7684\u51fd\u6570\u503c\u4e5f\u4e0d\u540c&#xff1a;<\/p>\n<p>obj &#061; w1  \u2192  Warrior.attack  \u2192  \u6218\u58eb\u6325\u5251\u653b\u51fb<br \/>\nobj &#061; m1  \u2192  Mage.attack     \u2192  \u6cd5\u5e08\u91ca\u653e\u9b54\u6cd5<\/p>\n<p>\u8fd9\u5c31\u4f53\u73b0\u4e86\u591a\u6001\u3002<\/p>\n<p>\u8fd9\u91cc\u9700\u8981\u533a\u5206&#xff1a;\u91cd\u5199\u63cf\u8ff0\u7684\u662f\u5b50\u7c7b\u63d0\u4f9b\u540c\u540d\u65b9\u6cd5\u7684\u884c\u4e3a&#xff1b;\u591a\u6001\u63cf\u8ff0\u7684\u662f\u76f8\u540c\u8c03\u7528\u64cd\u4f5c\u4f5c\u7528\u4e8e\u4e0d\u540c\u5bf9\u8c61\u65f6&#xff0c;\u8868\u73b0\u51fa\u4e0d\u540c\u7684\u6267\u884c\u7ed3\u679c\u3002<\/p>\n<p>\u5bf9\u4e8e C&#043;&#043;&#xff0c;\u5178\u578b\u7684\u8fd0\u884c\u65f6\u591a\u6001\u4f9d\u8d56\u865a\u51fd\u6570\u7b49\u8bed\u8a00\u673a\u5236&#xff1b;Lua \u5219\u5229\u7528\u8fd0\u884c\u65f6\u5b57\u6bb5\u67e5\u627e\u4ee5\u53ca\u51fd\u6570\u503c\u8c03\u7528\u5b8c\u6210\u52a8\u6001\u5206\u6d3e\u3002Lua \u7684\u601d\u8def\u76f4\u89c2&#xff0c;\u4f46\u5e76\u4e0d\u610f\u5473\u7740\u5b83\u7684\u8fd0\u884c\u5f00\u9500\u4e00\u5b9a\u66f4\u4f4e\u3002<\/p>\n<p>\u53e6\u5916&#xff0c;Lua \u7684\u591a\u6001\u5e76\u4e0d\u4e00\u5b9a\u9700\u8981\u7ee7\u627f\u3002\u4f8b\u5982&#xff0c;\u4e24\u4e2a\u6beb\u65e0\u7ee7\u627f\u5173\u7cfb\u7684 Table&#xff0c;\u53ea\u8981\u90fd\u63d0\u4f9b\u4e86 attack \u65b9\u6cd5&#xff0c;\u5c31\u90fd\u53ef\u4ee5\u4f20\u7ed9 doAttack\u3002\u8c03\u7528\u65b9\u53ea\u5173\u5fc3\u5bf9\u8c61\u80fd\u5426\u63d0\u4f9b\u9700\u8981\u7684\u884c\u4e3a&#xff0c;\u8fd9\u4e5f\u662f\u5e38\u8bf4\u7684\u9e2d\u5b50\u7c7b\u578b&#xff08;Duck Typing&#xff09;\u3002<\/p>\n<h4>3. \u91cd\u5199\u4ee5\u540e&#xff0c;\u5b50\u7c7b\u5982\u4f55\u8c03\u7528\u7236\u7c7b\u539f\u6765\u7684\u65b9\u6cd5&#xff1f;<\/h4>\n<p>\u6709\u4e9b\u65f6\u5019&#xff0c;\u6211\u4eec\u4e0d\u60f3\u5b8c\u5168\u66ff\u6362\u7236\u7c7b\u903b\u8f91&#xff0c;\u800c\u662f\u5e0c\u671b\u5148\u6267\u884c\u7236\u7c7b\u7684\u901a\u7528\u884c\u4e3a&#xff0c;\u518d\u8ffd\u52a0\u5b50\u7c7b\u81ea\u5df1\u7684\u884c\u4e3a\u3002<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p><span class=\"token keyword\">function<\/span> Player<span class=\"token punctuation\">:<\/span><span class=\"token function\">attack<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">.<\/span>name <span class=\"token operator\">..<\/span> <span class=\"token string\">&#034;\u6267\u884c\u666e\u901a\u653b\u51fb&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<p><span class=\"token keyword\">function<\/span> Warrior<span class=\"token punctuation\">:<\/span><span class=\"token function\">attack<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    Player<span class=\"token punctuation\">.<\/span><span class=\"token function\">attack<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">.<\/span>name <span class=\"token operator\">..<\/span> <span class=\"token string\">&#034;\u8ffd\u52a0\u6218\u58eb\u653b\u51fb&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<p><span class=\"token keyword\">local<\/span> w1 <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">setmetatable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> name <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\u8d75\u4e91&#034;<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> Warrior<span class=\"token punctuation\">)<\/span><br \/>\nw1<span class=\"token punctuation\">:<\/span><span class=\"token function\">attack<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u8f93\u51fa&#xff1a;<\/p>\n<p>\u8d75\u4e91\u6267\u884c\u666e\u901a\u653b\u51fb<br \/>\n\u8d75\u4e91\u8ffd\u52a0\u6218\u58eb\u653b\u51fb<\/p>\n<p>\u8fd9\u6bb5\u4ee3\u7801\u4e2d\u6709\u4e24\u79cd\u673a\u5236&#xff0c;\u4e0d\u80fd\u6df7\u4e3a\u4e00\u8c08\u3002<\/p>\n<p>\u9996\u5148&#xff1a;<\/p>\n<p>w1<span class=\"token punctuation\">:<\/span><span class=\"token function\">attack<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u9700\u8981\u901a\u8fc7\u5b9e\u4f8b\u7684 __index \u627e\u5230 Warrior.attack\u3002<\/p>\n<p>\u8fdb\u5165\u5b50\u7c7b\u65b9\u6cd5\u4ee5\u540e&#xff1a;<\/p>\n<p>Player<span class=\"token punctuation\">.<\/span><span class=\"token function\">attack<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u5219\u662f\u663e\u5f0f\u8bbf\u95ee\u7236\u7c7b Table \u4e2d\u7684\u51fd\u6570&#xff0c;\u7136\u540e\u628a\u5f53\u524d\u5b9e\u4f8b self \u4f20\u8fdb\u53bb\u3002<\/p>\n<p>\u7531\u4e8e Player \u81ea\u8eab\u5b58\u5728 attack \u5b57\u6bb5&#xff0c;\u8fd9\u6b21\u8bbf\u95ee\u76f4\u63a5\u53d6\u5f97\u51fd\u6570\u503c&#xff0c;\u4e0d\u9700\u8981\u901a\u8fc7 __index \u7ee7\u7eed\u67e5\u627e\u3002<\/p>\n<p>\u6267\u884c\u8fc7\u7a0b\u5982\u4e0b&#xff1a;<\/p>\n<p>w1:attack()<br \/>\n    \u2193<br \/>\n\u901a\u8fc7 __index \u627e\u5230 Warrior.attack<br \/>\n    \u2193<br \/>\n\u6267\u884c Warrior.attack(w1)<br \/>\n    \u2193<br \/>\n\u663e\u5f0f\u8c03\u7528 Player.attack(w1)<br \/>\n    \u2193<br \/>\n\u7236\u7c7b\u901a\u7528\u903b\u8f91\u6267\u884c\u7ed3\u675f<br \/>\n    \u2193<br \/>\n\u8fd4\u56de Warrior.attack&#xff0c;\u7ee7\u7eed\u540e\u9762\u7684\u8bed\u53e5<br \/>\n    \u2193<br \/>\n\u6267\u884c\u6218\u58eb\u81ea\u5df1\u7684\u8ffd\u52a0\u903b\u8f91<br \/>\n    \u2193<br \/>\n\u7ed3\u675f<\/p>\n<p>\u6ce8\u610f&#xff0c;\u8fd9\u91cc\u4e0d\u80fd\u968f\u610f\u6539\u6210&#xff1a;<\/p>\n<p>Player<span class=\"token punctuation\">:<\/span><span class=\"token function\">attack<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u56e0\u4e3a\u5192\u53f7\u8c03\u7528\u4f1a\u628a Player \u81ea\u5df1\u4f5c\u4e3a self \u4f20\u5165&#xff0c;\u800c\u4e0d\u662f\u628a\u5f53\u524d\u5b9e\u4f8b w1 \u4f20\u5165\u3002<\/p>\n<p>\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u603b\u7ed3&#xff1a;<\/p>\n<p>__index \u8d1f\u8d23\u627e\u5230\u8981\u8c03\u7528\u7684\u65b9\u6cd5&#xff1b;\u8fdb\u5165\u5b50\u7c7b\u65b9\u6cd5\u4ee5\u540e&#xff0c;\u662f\u5426\u8c03\u7528\u7236\u7c7b\u539f\u672c\u7684\u5b9e\u73b0&#xff0c;\u53d6\u51b3\u4e8e\u6211\u4eec\u6709\u6ca1\u6709\u663e\u5f0f\u7f16\u5199 Player.attack(self)\u3002Lua \u4e0d\u4f1a\u56e0\u4e3a\u53d1\u751f\u91cd\u5199\u5c31\u81ea\u52a8\u6267\u884c\u7236\u7c7b\u65b9\u6cd5\u3002<\/p>\n<h3>\u516b\u3001\u591a\u7ee7\u627f&#xff1a;\u4e00\u4e2a\u7c7b\u5982\u4f55\u590d\u7528\u591a\u4e2a\u7236\u7c7b\u7684\u884c\u4e3a&#xff1f;<\/h3>\n<h4>1. \u4ece\u5355\u7ee7\u627f\u8fc7\u6e21\u5230\u591a\u7ee7\u627f<\/h4>\n<p>\u4e4b\u524d\u7684\u4f8b\u5b50\u4e2d&#xff0c;Warrior \u53ea\u9700\u8981\u7ee7\u627f Player&#xff0c;\u8fd9\u5c5e\u4e8e\u5355\u7ee7\u627f\u3002<\/p>\n<p>\u4f46\u5982\u679c\u73b0\u5728\u6e38\u620f\u4e2d\u5b58\u5728\u4e00\u4e2a\u5723\u9a91\u58eb&#xff0c;\u5b83\u65e2\u80fd\u591f\u653b\u51fb&#xff0c;\u4e5f\u80fd\u591f\u6cbb\u7597&#xff0c;\u90a3\u4e48\u6211\u4eec\u53ef\u80fd\u5e0c\u671b\u5b83\u540c\u65f6\u590d\u7528\u4e24\u7ec4\u884c\u4e3a&#xff1a;<\/p>\n<p>Fighter&#xff1a;attack()<br \/>\n          \u2198<br \/>\n           Paladin<br \/>\n          \u2197<br \/>\nHealer&#xff1a;heal()<\/p>\n<p>\u8fd9\u5c31\u662f\u591a\u7ee7\u627f\u7684\u9700\u6c42&#xff1a;\u4e00\u4e2a\u7c7b\u9700\u8981\u4ece\u591a\u4e2a\u7236\u7c7b\u6216\u65b9\u6cd5\u96c6\u5408\u4e2d\u590d\u7528\u884c\u4e3a\u3002<\/p>\n<p>\u90a3\u4e48&#xff0c;\u4e3a\u4ec0\u4e48\u4e4b\u524d\u7684\u5199\u6cd5\u4e0d\u80fd\u76f4\u63a5\u7167\u642c&#xff1f;<\/p>\n<p>\u56e0\u4e3a setmetatable \u4e3a\u4e00\u4e2a Table \u76f4\u63a5\u5173\u8054\u7684\u662f\u4e00\u4e2a\u5143\u8868&#xff0c;\u800c\u6211\u4eec\u73b0\u5728\u5e0c\u671b\u5b57\u6bb5\u8bbf\u95ee\u5931\u8d25\u4ee5\u540e&#xff0c;\u80fd\u591f\u6839\u636e\u9700\u8981\u53bb\u591a\u4e2a\u5019\u9009\u8868\u4e2d\u67e5\u627e\u3002<\/p>\n<p>\u8fd9\u65f6\u5019\u5c31\u53ef\u4ee5\u5229\u7528 __index \u7684\u53e6\u4e00\u79cd\u5f62\u5f0f&#xff1a;\u51fd\u6570\u3002<\/p>\n<h4>2. __index \u65e2\u53ef\u4ee5\u662f Table&#xff0c;\u4e5f\u53ef\u4ee5\u662f\u51fd\u6570<\/h4>\n<p>\u4e4b\u524d\u6211\u4eec\u4f7f\u7528\u7684\u662f&#xff1a;<\/p>\n<p><span class=\"token keyword\">local<\/span> mt <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    __index <span class=\"token operator\">&#061;<\/span> Player<br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u8fd9\u91cc\u7684 __index \u662f Table\u3002\u5b57\u6bb5\u8bbf\u95ee\u5931\u8d25\u65f6&#xff0c;Lua \u4f1a\u7ee7\u7eed\u5728\u5b83\u6307\u5411\u7684 Table \u4e2d\u67e5\u627e\u3002<\/p>\n<p>\u5b9e\u9645\u4e0a&#xff0c;__index \u8fd8\u53ef\u4ee5\u8bbe\u7f6e\u4e3a\u4e00\u4e2a\u51fd\u6570&#xff1a;<\/p>\n<p><span class=\"token keyword\">local<\/span> mt <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    __index <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">function<\/span><span class=\"token punctuation\">(<\/span>obj<span class=\"token punctuation\">,<\/span> key<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6b63\u5728\u8bbf\u95ee\u5b57\u6bb5&#xff1a;&#034;<\/span><span class=\"token punctuation\">,<\/span> key<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">nil<\/span><br \/>\n    <span class=\"token keyword\">end<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u5f53\u5bf9\u8c61\u4e0d\u5b58\u5728\u76ee\u6807\u5b57\u6bb5\u65f6&#xff0c;Lua \u4f1a\u6309\u7167\u5143\u65b9\u6cd5\u7684\u8c03\u7528\u534f\u8bae\u8c03\u7528\u8fd9\u4e2a\u51fd\u6570&#xff0c;\u5e76\u4f20\u5165\u4e24\u4e2a\u53c2\u6570&#xff1a;<\/p>\n<ul>\n<li>obj&#xff1a;\u89e6\u53d1\u6b64\u6b21 __index \u7684\u539f\u59cb\u8bbf\u95ee\u5bf9\u8c61\u3002<\/li>\n<li>key&#xff1a;\u672c\u6b21\u5e0c\u671b\u8bbf\u95ee\u7684\u5b57\u6bb5\u540d\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982&#xff0c;\u82e5 p1 \u7684\u5143\u8868\u662f mt&#xff0c;\u6267\u884c p1.attack \u4e14 attack \u4e0d\u5b58\u5728&#xff0c;\u5c31\u4f1a\u8c03\u7528\u8fd9\u4e2a __index \u51fd\u6570&#xff0c;\u4f20\u5165 p1 \u548c\u5b57\u7b26\u4e32 &#034;attack&#034;\u3002\u5bf9\u4e8e\u51fd\u6570\u5f62\u5f0f\u7684 __index&#xff0c;\u51fd\u6570\u7684\u7b2c\u4e00\u4e2a\u8fd4\u56de\u503c\u5c31\u6210\u4e3a\u672c\u6b21\u5b57\u6bb5\u8bbf\u95ee\u7684\u7ed3\u679c\u3002<\/p>\n<p>\u8fd9\u91cc\u4e0d\u662f\u8bf4 __index \u7279\u522b\u4f1a\u201c\u8c03\u7528\u51fd\u6570\u65b9\u6cd5\u201d&#xff0c;\u800c\u662f\u5143\u65b9\u6cd5\u672c\u8eab\u88ab\u8bbe\u7f6e\u6210\u4e86\u51fd\u6570&#xff0c;\u6240\u4ee5\u6309\u5143\u65b9\u6cd5\u534f\u8bae\u6267\u884c\u51fd\u6570\u8c03\u7528\u3002<\/p>\n<h4>3. \u901a\u8fc7\u51fd\u6570\u81ea\u884c\u5b9e\u73b0\u591a\u4e2a\u7236\u7c7b\u7684\u67e5\u627e\u89c4\u5219<\/h4>\n<p><span class=\"token keyword\">local<\/span> Fighter <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    attack <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">function<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">.<\/span>name <span class=\"token operator\">..<\/span> <span class=\"token string\">&#034;\u53d1\u8d77\u653b\u51fb&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">end<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">local<\/span> Healer <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    heal <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">function<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">.<\/span>name <span class=\"token operator\">..<\/span> <span class=\"token string\">&#034;\u8fdb\u884c\u6cbb\u7597&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">end<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">local<\/span> Paladin <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<p>Paladin<span class=\"token punctuation\">.<\/span>__index <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">function<\/span><span class=\"token punctuation\">(<\/span>obj<span class=\"token punctuation\">,<\/span> key<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> Fighter<span class=\"token punctuation\">[<\/span>key<span class=\"token punctuation\">]<\/span> <span class=\"token keyword\">or<\/span> Healer<span class=\"token punctuation\">[<\/span>key<span class=\"token punctuation\">]<\/span><br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<p><span class=\"token keyword\">local<\/span> p1 <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">setmetatable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> name <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\u5723\u9a91\u58eb&#034;<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> Paladin<span class=\"token punctuation\">)<\/span><\/p>\n<p>p1<span class=\"token punctuation\">:<\/span><span class=\"token function\">attack<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\">&#8212; \u5723\u9a91\u58eb\u53d1\u8d77\u653b\u51fb<\/span><br \/>\np1<span class=\"token punctuation\">:<\/span><span class=\"token function\">heal<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>    <span class=\"token comment\">&#8212; \u5723\u9a91\u58eb\u8fdb\u884c\u6cbb\u7597<\/span><\/p>\n<p>\u8fd9\u91cc Fighter \u548c Healer \u662f\u4e24\u7ec4\u53ef\u590d\u7528\u7684\u65b9\u6cd5\u3002\u6211\u4eec\u8ba9 Paladin \u5145\u5f53\u5b9e\u4f8b\u7684\u5143\u8868&#xff0c;\u5e76\u628a __index \u8bbe\u7f6e\u6210\u51fd\u6570\u3002<\/p>\n<p>\u5f53\u6267\u884c&#xff1a;<\/p>\n<p>p1<span class=\"token punctuation\">:<\/span><span class=\"token function\">heal<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u6574\u4e2a\u8fc7\u7a0b\u53ef\u4ee5\u7406\u89e3\u4e3a&#xff1a;<\/p>\n<p>p1.heal<br \/>\n    \u2193<br \/>\np1 \u81ea\u8eab\u6ca1\u6709 heal<br \/>\n    \u2193<br \/>\n\u627e\u5230\u5143\u8868 Paladin<br \/>\n    \u2193<br \/>\nPaladin.__index \u662f\u51fd\u6570<br \/>\n    \u2193<br \/>\n\u8c03\u7528 __index(p1, &#034;heal&#034;)<br \/>\n    \u2193<br \/>\n\u5148\u8ba1\u7b97 Fighter[&#034;heal&#034;] \u2192 nil<br \/>\n    \u2193<br \/>\n\u7531\u4e8e\u5de6\u64cd\u4f5c\u6570\u4e3a nil&#xff0c;\u7ee7\u7eed\u8ba1\u7b97 Healer[&#034;heal&#034;]<br \/>\n    \u2193<br \/>\n\u627e\u5230 heal \u51fd\u6570\u5e76\u8fd4\u56de<br \/>\n    \u2193<br \/>\n\u6267\u884c\u8fd9\u4e2a\u51fd\u6570&#xff0c;\u5e76\u628a p1 \u4f5c\u4e3a self \u4f20\u5165<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/11\/20261104151706-6aeb4c725b34e.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u5176\u4e2d&#xff1a;<\/p>\n<p><span class=\"token keyword\">return<\/span> Fighter<span class=\"token punctuation\">[<\/span>key<span class=\"token punctuation\">]<\/span> <span class=\"token keyword\">or<\/span> Healer<span class=\"token punctuation\">[<\/span>key<span class=\"token punctuation\">]<\/span><\/p>\n<p>\u5229\u7528\u4e86 Lua \u7684\u903b\u8f91\u6216 or \u7684\u77ed\u8def\u6c42\u503c\u89c4\u5219&#xff1a;\u5982\u679c\u5de6\u64cd\u4f5c\u6570\u4e0d\u662f nil\u3001\u4e5f\u4e0d\u662f false&#xff0c;\u5c31\u76f4\u63a5\u8fd4\u56de\u5de6\u64cd\u4f5c\u6570&#xff0c;\u4e0d\u518d\u8ba1\u7b97\u53f3\u64cd\u4f5c\u6570&#xff1b;\u5426\u5219\u7ee7\u7eed\u8ba1\u7b97\u5e76\u8fd4\u56de\u53f3\u64cd\u4f5c\u6570\u3002<\/p>\n<p>\u6240\u4ee5&#xff0c;Fighter \u62e5\u6709\u76ee\u6807\u51fd\u6570\u65f6&#xff0c;\u4f18\u5148\u8fd4\u56de Fighter \u7684\u51fd\u6570&#xff1b;\u53ea\u6709\u65e0\u6cd5\u6309\u8fd9\u6761\u89c4\u5219\u4f7f\u7528\u5de6\u4fa7\u7ed3\u679c\u65f6&#xff0c;\u624d\u7ee7\u7eed\u5230 Healer \u4e2d\u67e5\u627e\u3002<\/p>\n<p>\u8fd9\u91cc\u8981\u7279\u522b\u6ce8\u610f\u4e00\u4e2a\u7ec6\u8282&#xff1a;or \u5224\u65ad\u7684\u4e0d\u53ea\u662f nil&#xff0c;\u8fd8\u5305\u62ec false\u3002\u5982\u679c\u7236\u7c7b\u67d0\u4e2a\u5b57\u6bb5\u786e\u5b9e\u5b58\u5728&#xff0c;\u4f46\u5b57\u6bb5\u503c\u6070\u597d\u4e3a false&#xff0c;\u4f7f\u7528 or \u4e5f\u4f1a\u7ee7\u7eed\u67e5\u627e\u7b2c\u4e8c\u4e2a\u7236\u7c7b\u3002<\/p>\n<p>\u5982\u679c\u6211\u4eec\u5e0c\u671b\u4e25\u683c\u6309\u7167\u201c\u5b57\u6bb5\u662f\u5426\u4e3a nil\u201d\u51b3\u5b9a\u662f\u5426\u56de\u9000&#xff0c;\u53ef\u4ee5\u5199\u6210&#xff1a;<\/p>\n<p>Paladin<span class=\"token punctuation\">.<\/span>__index <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">function<\/span><span class=\"token punctuation\">(<\/span>_<span class=\"token punctuation\">,<\/span> key<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">local<\/span> value <span class=\"token operator\">&#061;<\/span> Fighter<span class=\"token punctuation\">[<\/span>key<span class=\"token punctuation\">]<\/span><\/p>\n<p>    <span class=\"token keyword\">if<\/span> value <span class=\"token operator\">~&#061;<\/span> <span class=\"token keyword\">nil<\/span> <span class=\"token keyword\">then<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> value<br \/>\n    <span class=\"token keyword\">end<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> Healer<span class=\"token punctuation\">[<\/span>key<span class=\"token punctuation\">]<\/span><br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<p>\u8fd9\u91cc\u7684 _ \u53ea\u662f\u666e\u901a\u5f62\u53c2\u540d&#xff0c;\u6309\u7167\u4e60\u60ef\u8868\u793a\u8fd9\u4e2a\u53c2\u6570\u5f53\u524d\u6ca1\u6709\u88ab\u4f7f\u7528\u3002\u7b2c\u4e00\u4e2a\u53c2\u6570\u4f9d\u7136\u4f1a\u7531 Lua \u4f20\u5165&#xff0c;\u53ea\u662f\u6211\u4eec\u6ca1\u6709\u7528\u5230\u5b83\u3002<\/p>\n<p>\u5982\u679c\u591a\u4e2a\u7236\u7c7b\u90fd\u63d0\u4f9b\u4e86\u540c\u540d\u5b57\u6bb5&#xff0c;\u4ee3\u7801\u4e2d\u6307\u5b9a\u7684\u67e5\u627e\u987a\u5e8f\u5c31\u51b3\u5b9a\u4e86\u8c01\u4f18\u5148\u3002\u5b9e\u9645\u9879\u76ee\u91cc\u7684\u591a\u7ee7\u627f\u8bbe\u8ba1\u8fd8\u9700\u8981\u8003\u8651\u65b9\u6cd5\u51b2\u7a81\u3001\u521d\u59cb\u5316\u987a\u5e8f\u7b49\u95ee\u9898&#xff0c;\u4f46\u57fa\u7840\u673a\u5236\u5c31\u662f\u5982\u6b64\u3002<\/p>\n<p>\u56e0\u6b64&#xff1a;<\/p>\n<p>Lua \u5b9e\u73b0\u591a\u7ee7\u627f&#xff0c;\u5e76\u4e0d\u9700\u8981\u7ed9\u4e00\u4e2a\u5bf9\u8c61\u540c\u65f6\u8bbe\u7f6e\u591a\u4e2a\u5143\u8868&#xff0c;\u800c\u662f\u53ef\u4ee5\u901a\u8fc7\u4e00\u4e2a\u51fd\u6570\u5f62\u5f0f\u7684 __index&#xff0c;\u81ea\u884c\u5b9e\u73b0\u5bf9\u591a\u4e2a\u7236\u7c7b\u6216\u65b9\u6cd5\u8868\u7684\u67e5\u627e\u4e0e\u4f18\u5148\u7ea7\u89c4\u5219\u3002<\/p>\n<h3>\u4e5d\u3001\u5c01\u88c5\u4e0e\u79c1\u5bc6\u6027&#xff1a;Lua \u5982\u4f55\u9690\u85cf\u5bf9\u8c61\u7684\u5185\u90e8\u72b6\u6001&#xff1f;<\/h3>\n<h4>1. Table \u7684\u5b57\u6bb5\u9ed8\u8ba4\u53ef\u4ee5\u76f4\u63a5\u4ece\u5916\u90e8\u8bbf\u95ee<\/h4>\n<p>\u5230\u8fd9\u91cc&#xff0c;\u6211\u4eec\u5df2\u7ecf\u8ba4\u8bc6\u4e86\u9762\u5411\u5bf9\u8c61\u4e2d\u7684\u7ee7\u627f\u4e0e\u591a\u6001\u3002\u90a3\u4e48\u9762\u5411\u5bf9\u8c61\u7684\u53e6\u4e00\u9879\u91cd\u8981\u7279\u6027\u2014\u2014\u5c01\u88c5\u2014\u2014\u5728 Lua \u4e2d\u53c8\u8be5\u5982\u4f55\u4f53\u73b0&#xff1f;<\/p>\n<p>\u5bf9\u4e8e C&#043;&#043;&#xff0c;\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7 private\u3001public \u7b49\u8bbf\u95ee\u63a7\u5236\u7b26\u9650\u5236\u6210\u5458\u7684\u8bbf\u95ee\u8303\u56f4\u3002<\/p>\n<p>\u4f46 Lua \u7684 Table \u6ca1\u6709\u5185\u7f6e\u7684 private \u5b57\u6bb5\u8bbf\u95ee\u63a7\u5236\u3002\u4f8b\u5982&#xff1a;<\/p>\n<p><span class=\"token keyword\">local<\/span> player <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    name <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\u6218\u58eb&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    hp <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">100<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>player<span class=\"token punctuation\">.<\/span>hp <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">999<\/span><br \/>\n<span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>player<span class=\"token punctuation\">.<\/span>hp<span class=\"token punctuation\">)<\/span>  <span class=\"token comment\">&#8212; -999<\/span><\/p>\n<p>\u65e2\u7136 hp \u5c31\u662f Table \u7684\u666e\u901a\u5b57\u6bb5&#xff0c;\u90a3\u4e48\u5916\u90e8\u4ee3\u7801\u81ea\u7136\u80fd\u591f\u76f4\u63a5\u8bbf\u95ee\u548c\u4fee\u6539\u5b83\u3002<\/p>\n<p>\u5982\u679c\u6211\u4eec\u5e0c\u671b\u5916\u90e8\u53ea\u80fd\u901a\u8fc7 getHp\u3001setHp \u8fd9\u4e9b\u63a5\u53e3\u8bbf\u95ee\u751f\u547d\u503c&#xff0c;\u5e94\u8be5\u600e\u4e48\u529e&#xff1f;<\/p>\n<p>\u8fd9\u91cc\u5176\u5b9e\u4e0d\u9700\u8981\u5f15\u5165\u65b0\u7684\u8bed\u6cd5&#xff0c;\u6211\u4eec\u4e4b\u524d\u5b66\u4e60\u8fc7\u7684\u5c40\u90e8\u53d8\u91cf\u3001\u95ed\u5305\u548c Upvalue \u5c31\u80fd\u591f\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n<h4>2. \u628a\u5185\u90e8\u72b6\u6001\u653e\u5230\u6784\u9020\u51fd\u6570\u7684\u5c40\u90e8\u53d8\u91cf\u4e2d<\/h4>\n<p><span class=\"token keyword\">local<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function\">newPlayer<\/span><span class=\"token punctuation\">(<\/span>name<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">local<\/span> hp <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">100<\/span><\/p>\n<p>    <span class=\"token keyword\">local<\/span> player <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        name <span class=\"token operator\">&#061;<\/span> name<br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">function<\/span> player<span class=\"token punctuation\">:<\/span><span class=\"token function\">getHp<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> hp<br \/>\n    <span class=\"token keyword\">end<\/span><\/p>\n<p>    <span class=\"token keyword\">function<\/span> player<span class=\"token punctuation\">:<\/span><span class=\"token function\">setHp<\/span><span class=\"token punctuation\">(<\/span>value<span class=\"token punctuation\">)<\/span><br \/>\n        hp <span class=\"token operator\">&#061;<\/span> value<br \/>\n    <span class=\"token keyword\">end<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> player<br \/>\n<span class=\"token keyword\">end<\/span><\/p>\n<p><span class=\"token keyword\">local<\/span> p1 <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">newPlayer<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6218\u58eb&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>p1<span class=\"token punctuation\">:<\/span><span class=\"token function\">getHp<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\">&#8212; 100<\/span><br \/>\np1<span class=\"token punctuation\">:<\/span><span class=\"token function\">setHp<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">80<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>p1<span class=\"token punctuation\">:<\/span><span class=\"token function\">getHp<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\">&#8212; 80<\/span><\/p>\n<p>\u8fd9\u91cc\u7684\u5173\u952e\u662f&#xff1a;<\/p>\n<p><span class=\"token keyword\">local<\/span> hp <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">100<\/span><\/p>\n<p>hp \u5e76\u4e0d\u662f player \u8fd9\u4e2a Table \u4e2d\u7684\u5b57\u6bb5&#xff0c;\u800c\u662f newPlayer \u8c03\u7528\u671f\u95f4\u521b\u5efa\u7684\u4e00\u4e2a\u5c40\u90e8\u53d8\u91cf\u3002<\/p>\n<p>\u968f\u540e&#xff0c;getHp \u548c setHp \u90fd\u5f15\u7528\u4e86\u5916\u5c42\u51fd\u6570\u7684 hp&#xff0c;\u56e0\u6b64\u8fd9\u4e24\u4e2a\u51fd\u6570\u5f62\u6210\u4e86\u95ed\u5305&#xff0c;\u5e76\u5171\u540c\u5f15\u7528\u8fd9\u4e00\u8c03\u7528\u6240\u521b\u5efa\u7684\u53d8\u91cf\u3002<\/p>\n<h4>3. \u4e3a\u4ec0\u4e48\u6784\u9020\u51fd\u6570\u8fd4\u56de\u4ee5\u540e&#xff0c;hp \u4ecd\u7136\u80fd\u88ab\u8bbf\u95ee&#xff1f;<\/h4>\n<p>\u8fd9\u91cc\u9700\u8981\u628a\u4e24\u4e2a\u6982\u5ff5\u533a\u5206\u6e05\u695a&#xff1a;\u4f5c\u7528\u57df\u548c\u751f\u547d\u5468\u671f\u3002<\/p>\n<p>\u9996\u5148&#xff0c;hp \u7684\u8bcd\u6cd5\u4f5c\u7528\u57df\u4ecd\u7136\u9650\u5b9a\u5728\u5b83\u88ab\u5b9a\u4e49\u7684\u4ee3\u7801\u73af\u5883\u4e2d\u3002newPlayer \u8fd4\u56de\u4ee5\u540e&#xff0c;\u5916\u90e8\u4ee3\u7801\u4e0d\u4f1a\u56e0\u6b64\u83b7\u5f97\u4e00\u4e2a\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u7684\u5c40\u90e8\u53d8\u91cf hp\u3002<\/p>\n<p>\u4f46\u662f&#xff0c;newPlayer \u8fd4\u56de\u7684 Table \u4e2d\u4fdd\u5b58\u4e86 getHp \u548c setHp \u8fd9\u4e24\u4e2a\u51fd\u6570\u503c&#xff0c;\u800c\u5b83\u4eec\u90fd\u662f\u5f15\u7528\u4e86 hp \u7684\u95ed\u5305\u3002<\/p>\n<p>\u56e0\u6b64&#xff0c;\u867d\u7136 newPlayer \u8fd9\u6b21\u8c03\u7528\u5df2\u7ecf\u7ed3\u675f&#xff0c;hp \u4f5c\u4e3a\u88ab\u6355\u83b7\u7684 Upvalue \u4ecd\u7136\u53ef\u4ee5\u7ee7\u7eed\u5b58\u6d3b&#xff0c;\u4f9b\u8fd9\u4e9b\u95ed\u5305\u8bfb\u53d6\u548c\u4fee\u6539\u3002<\/p>\n<p>\u4e5f\u5c31\u662f\u8bf4&#xff0c;\u5c40\u90e8\u53d8\u91cf\u7684\u53ef\u89c1\u8303\u56f4\u6ca1\u6709\u6269\u5927&#xff0c;\u4f46\u88ab\u95ed\u5305\u5f15\u7528\u4f7f\u5b83\u7684\u751f\u547d\u5468\u671f\u80fd\u591f\u8d85\u51fa\u521b\u5efa\u5b83\u7684\u51fd\u6570\u8c03\u7528\u3002<\/p>\n<h4>4. \u5916\u90e8\u4fee\u6539 p1.hp&#xff0c;\u4e3a\u4ec0\u4e48\u4e0d\u4f1a\u5f71\u54cd\u5185\u90e8\u7684 hp&#xff1f;<\/h4>\n<p>\u7ee7\u7eed\u6267\u884c&#xff1a;<\/p>\n<p>p1<span class=\"token punctuation\">.<\/span>hp <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">999<\/span><\/p>\n<p><span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>p1<span class=\"token punctuation\">.<\/span>hp<span class=\"token punctuation\">)<\/span>       <span class=\"token comment\">&#8212; -999<\/span><br \/>\n<span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>p1<span class=\"token punctuation\">:<\/span><span class=\"token function\">getHp<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\">&#8212; 80<\/span><\/p>\n<p>\u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0\u4e24\u4e2a\u4e0d\u540c\u7684\u7ed3\u679c&#xff1f;<\/p>\n<p>\u539f\u56e0\u5f88\u7b80\u5355&#xff1a;\u5b83\u4eec\u6839\u672c\u4e0d\u662f\u540c\u4e00\u4e2a\u53d8\u91cf\u3002<\/p>\n<ul>\n<li>p1.hp&#xff1a;\u662f\u5916\u90e8\u7ed9 p1 \u8fd9\u4e2a Table \u65b0\u589e\u7684\u666e\u901a\u5b57\u6bb5\u3002<\/li>\n<li>\u95ed\u5305\u4e2d\u7684 hp&#xff1a;\u662f newPlayer \u5185\u90e8\u7684\u5c40\u90e8\u53d8\u91cf&#xff0c;\u88ab getHp \u548c setHp \u6355\u83b7\u3002<\/li>\n<\/ul>\n<p>\u6211\u4eec\u53ea\u662f\u6ca1\u6709\u628a\u9700\u8981\u9690\u85cf\u7684\u5185\u90e8\u72b6\u6001\u76f4\u63a5\u653e\u8fdb Table \u4e2d&#xff0c;\u800c\u662f\u8ba9\u5916\u90e8\u901a\u8fc7\u95ed\u5305\u63d0\u4f9b\u7684\u51fd\u6570\u8bbf\u95ee\u5b83\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/11\/20261104151706-6aeb4c72a2f87.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u8fd8\u8981\u6ce8\u610f&#xff0c;\u5982\u679c\u6211\u4eec\u518d\u6b21\u8c03\u7528&#xff1a;<\/p>\n<p><span class=\"token keyword\">local<\/span> p2 <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">newPlayer<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6cd5\u5e08&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\np2<span class=\"token punctuation\">:<\/span><span class=\"token function\">setHp<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">50<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>p1<span class=\"token punctuation\">:<\/span><span class=\"token function\">getHp<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\">&#8212; 80<\/span><br \/>\n<span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>p2<span class=\"token punctuation\">:<\/span><span class=\"token function\">getHp<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\">&#8212; 50<\/span><\/p>\n<p>\u90a3\u4e48\u4e24\u6b21 newPlayer \u8c03\u7528\u5206\u522b\u521b\u5efa\u4e86\u5404\u81ea\u7684 hp&#xff0c;\u6bcf\u4e2a\u73a9\u5bb6\u7684\u79c1\u6709\u72b6\u6001\u4e5f\u662f\u72ec\u7acb\u7684\u3002<\/p>\n<p>\u5230\u8fd9\u91cc\u5c31\u53ef\u4ee5\u7406\u89e3&#xff1a;<\/p>\n<p>Lua \u7684\u79c1\u5bc6\u6027&#xff0c;\u4e0d\u662f\u7ed9\u67d0\u4e2a Table \u5b57\u6bb5\u8bbe\u7f6e\u4e86 private \u6743\u9650&#xff0c;\u800c\u662f\u5229\u7528\u5c40\u90e8\u53d8\u91cf\u7684\u8bcd\u6cd5\u4f5c\u7528\u57df&#xff0c;\u628a\u5185\u90e8\u6570\u636e\u9690\u85cf\u5728\u5916\u90e8\u65e0\u6cd5\u76f4\u63a5\u7d22\u5f15\u7684\u4f4d\u7f6e&#xff0c;\u518d\u901a\u8fc7\u95ed\u5305\u63d0\u4f9b\u64cd\u4f5c\u8fd9\u4e9b\u6570\u636e\u7684\u63a5\u53e3\u3002<\/p>\n<h3>\u5341\u3001\u91cd\u65b0\u628a Lua \u9762\u5411\u5bf9\u8c61\u7684\u6574\u4e2a\u6a21\u578b\u4e32\u8d77\u6765<\/h3>\n<p>\u73b0\u5728\u6211\u4eec\u56de\u5934\u770b&#xff0c;\u4f1a\u53d1\u73b0 Lua \u9762\u5411\u5bf9\u8c61\u7684\u5404\u4e2a\u77e5\u8bc6\u70b9\u5176\u5b9e\u662f\u987a\u7740\u540c\u4e00\u6761\u903b\u8f91\u94fe\u9010\u6b65\u4ea7\u751f\u7684\u3002<\/p>\n<p>\u6700\u5f00\u59cb&#xff0c;\u6211\u4eec\u53ea\u662f\u60f3\u8868\u793a\u4e00\u4e2a\u6709\u72b6\u6001\u3001\u6709\u884c\u4e3a\u7684\u73a9\u5bb6&#xff0c;\u4e8e\u662f\u5229\u7528 Table \u5b58\u50a8\u5b57\u6bb5\u548c\u51fd\u6570\u503c&#xff0c;\u76f4\u63a5\u521b\u5efa\u4e86\u4e00\u4e2a\u5bf9\u8c61\u3002<\/p>\n<p>\u540e\u6765&#xff0c;\u6211\u4eec\u9700\u8981\u521b\u5efa\u5927\u91cf\u73a9\u5bb6\u3002\u6bcf\u4e2a\u73a9\u5bb6\u7684\u72b6\u6001\u4e0d\u540c&#xff0c;\u4f46\u5f88\u591a\u884c\u4e3a\u903b\u8f91\u76f8\u540c&#xff0c;\u4e8e\u662f\u628a\u516c\u5171\u65b9\u6cd5\u63d0\u53d6\u5230\u4e00\u4e2a\u72ec\u7acb\u7684 Table \u4e2d&#xff0c;\u8ba9\u5b83\u627f\u62c5\u201c\u7c7b\u201d\u7684\u89d2\u8272&#xff0c;\u518d\u901a\u8fc7 __index \u8ba9\u5404\u4e2a\u5b9e\u4f8b\u5171\u4eab\u8fd9\u4e9b\u65b9\u6cd5\u3002<\/p>\n<p>\u63a5\u4e0b\u6765&#xff0c;\u6211\u4eec\u53d1\u73b0\u6bcf\u6b21\u521b\u5efa\u5b9e\u4f8b\u90fd\u8981\u91cd\u590d\u521d\u59cb\u5316\u5b57\u6bb5\u548c\u5173\u8054\u5143\u8868&#xff0c;\u4e8e\u662f\u7528\u4e00\u4e2a\u666e\u901a\u7684 new \u65b9\u6cd5&#xff0c;\u628a\u5bf9\u8c61\u7684\u521b\u5efa\u3001\u521d\u59cb\u5316\u3001\u5143\u8868\u5173\u8054\u548c\u8fd4\u56de\u8fc7\u7a0b\u7edf\u4e00\u5c01\u88c5\u8d77\u6765\u3002<\/p>\n<p>\u5f53\u6211\u4eec\u9700\u8981\u8ba9\u6218\u58eb\u590d\u7528\u73a9\u5bb6\u7684\u516c\u5171\u884c\u4e3a\u65f6&#xff0c;\u7ee7\u7eed\u5229\u7528 __index \u5efa\u7acb\u5b50\u7c7b\u4e0e\u7236\u7c7b\u4e4b\u95f4\u7684\u591a\u7ea7\u5b57\u6bb5\u67e5\u627e\u5173\u7cfb&#xff0c;\u4e8e\u662f\u6709\u4e86\u7ee7\u627f\u3002<\/p>\n<p>\u5982\u679c\u5b50\u7c7b\u5e0c\u671b\u91c7\u7528\u81ea\u5df1\u7684\u884c\u4e3a\u5b9e\u73b0&#xff0c;\u90a3\u4e48\u76f4\u63a5\u5728\u5b50\u7c7b\u4e2d\u5b9a\u4e49\u540c\u540d\u51fd\u6570\u5373\u53ef\u3002\u67e5\u627e\u65f6\u4f18\u5148\u547d\u4e2d\u5b50\u7c7b&#xff0c;\u8fd9\u5c31\u662f\u91cd\u5199&#xff1b;\u540c\u4e00\u4e2a\u65b9\u6cd5\u8c03\u7528\u5728\u4e0d\u540c\u5bf9\u8c61\u4e0a\u627e\u5230\u4e0d\u540c\u51fd\u6570\u5e76\u6267\u884c&#xff0c;\u5c31\u662f\u591a\u6001\u3002\u5982\u679c\u5b50\u7c7b\u9700\u8981\u7236\u7c7b\u539f\u672c\u7684\u884c\u4e3a&#xff0c;\u4e5f\u53ef\u4ee5\u5728\u5b50\u7c7b\u51fd\u6570\u5185\u90e8\u663e\u5f0f\u8c03\u7528 Player.attack(self)\u3002<\/p>\n<p>\u518d\u8fdb\u4e00\u6b65&#xff0c;\u5982\u679c\u4e00\u4e2a\u7c7b\u8981\u590d\u7528\u591a\u7ec4\u7236\u7c7b\u884c\u4e3a&#xff0c;\u5c31\u53ef\u4ee5\u628a __index \u8bbe\u7f6e\u4e3a\u51fd\u6570&#xff0c;\u6839\u636e\u8bbf\u95ee\u7684\u5b57\u6bb5\u540d&#xff0c;\u81ea\u884c\u51b3\u5b9a\u5230\u54ea\u4e9b\u7236\u7c7b\u4e2d\u67e5\u627e&#xff0c;\u4ee5\u53ca\u5148\u67e5\u627e\u54ea\u4e00\u4e2a\u3002<\/p>\n<p>\u6700\u540e&#xff0c;\u5982\u679c\u6211\u4eec\u4e0d\u5e0c\u671b\u5bf9\u8c61\u5185\u90e8\u67d0\u4e9b\u72b6\u6001\u88ab\u5916\u90e8\u76f4\u63a5\u8bbf\u95ee&#xff0c;\u5c31\u53ef\u4ee5\u628a\u8fd9\u4e9b\u72b6\u6001\u4fdd\u5b58\u5728\u6784\u9020\u51fd\u6570\u7684\u5c40\u90e8\u53d8\u91cf\u4e2d&#xff0c;\u518d\u7528\u95ed\u5305\u548c Upvalue \u63d0\u4f9b\u53d7\u63a7\u8bbf\u95ee\u63a5\u53e3\u3002<\/p>\n<p>\u628a\u8fd9\u4e9b\u673a\u5236\u653e\u5728\u4e00\u8d77&#xff1a;<\/p>\n<table>\n<tr>\u9762\u5411\u5bf9\u8c61\u6982\u5ff5Lua \u4e2d\u7684\u5e38\u89c1\u5b9e\u73b0\u65b9\u5f0f\u672c\u8d28<\/tr>\n<tbody>\n<tr>\n<td>\u5bf9\u8c61<\/td>\n<td>\u4e00\u4e2a\u4fdd\u5b58\u72b6\u6001\u4e0e\u51fd\u6570\u503c\u7684 Table<\/td>\n<td>Table<\/td>\n<\/tr>\n<tr>\n<td>\u65b9\u6cd5<\/td>\n<td>Table \u5b57\u6bb5\u4e2d\u4fdd\u5b58\u7684\u51fd\u6570\u503c<\/td>\n<td>\u51fd\u6570\u662f\u4e00\u7b49\u503c<\/td>\n<\/tr>\n<tr>\n<td>self<\/td>\n<td>\u5192\u53f7\u5b9a\u4e49\u548c\u8c03\u7528\u65f6\u4f7f\u7528\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570<\/td>\n<td>\u666e\u901a\u53c2\u6570\u3001\u5192\u53f7\u8bed\u6cd5\u7cd6<\/td>\n<\/tr>\n<tr>\n<td>\u7c7b<\/td>\n<td>\u4fdd\u5b58\u516c\u5171\u65b9\u6cd5\u7684 Table<\/td>\n<td>\u8bbe\u8ba1\u7ea6\u5b9a&#xff0c;\u4e0d\u662f\u65b0\u6570\u636e\u7c7b\u578b<\/td>\n<\/tr>\n<tr>\n<td>\u5b9e\u4f8b\u4e0e\u7c7b\u7684\u5173\u7cfb<\/td>\n<td>setmetatable &#043; __index<\/td>\n<td>\u5143\u8868\u4e0e\u5b57\u6bb5\u67e5\u627e<\/td>\n<\/tr>\n<tr>\n<td>\u6784\u9020\u51fd\u6570<\/td>\n<td>\u81ea\u884c\u5b9a\u4e49\u7684 new \u7b49\u666e\u901a\u51fd\u6570<\/td>\n<td>\u521b\u5efa\u3001\u521d\u59cb\u5316\u3001\u5173\u8054\u3001\u8fd4\u56de<\/td>\n<\/tr>\n<tr>\n<td>\u5355\u7ee7\u627f<\/td>\n<td>\u5b50\u7c7b\u627e\u4e0d\u5230\u5b57\u6bb5\u65f6\u7ee7\u7eed\u67e5\u7236\u7c7b<\/td>\n<td>\u591a\u7ea7 __index \u67e5\u627e<\/td>\n<\/tr>\n<tr>\n<td>\u65b9\u6cd5\u91cd\u5199<\/td>\n<td>\u5b50\u7c7b\u4fdd\u5b58\u540c\u540d\u65b9\u6cd5&#xff0c;\u4f18\u5148\u88ab\u627e\u5230<\/td>\n<td>\u5b57\u6bb5\u67e5\u627e\u4f18\u5148\u7ea7<\/td>\n<\/tr>\n<tr>\n<td>\u591a\u6001<\/td>\n<td>\u76f8\u540c\u8c03\u7528\u5728\u4e0d\u540c\u5bf9\u8c61\u4e0a\u53d6\u5f97\u4e0d\u540c\u65b9\u6cd5<\/td>\n<td>\u52a8\u6001\u5b57\u6bb5\u67e5\u627e\u4e0e\u51fd\u6570\u8c03\u7528<\/td>\n<\/tr>\n<tr>\n<td>\u8c03\u7528\u7236\u7c7b\u65b9\u6cd5<\/td>\n<td>Player.method(self)<\/td>\n<td>\u663e\u5f0f\u8bbf\u95ee\u5e76\u8c03\u7528\u51fd\u6570<\/td>\n<\/tr>\n<tr>\n<td>\u591a\u7ee7\u627f<\/td>\n<td>\u51fd\u6570\u5f62\u5f0f\u7684 __index \u67e5\u627e\u591a\u4e2a\u8868<\/td>\n<td>\u81ea\u5b9a\u4e49\u56de\u9000\u67e5\u627e\u89c4\u5219<\/td>\n<\/tr>\n<tr>\n<td>\u79c1\u5bc6\u6027<\/td>\n<td>\u5c40\u90e8\u53d8\u91cf &#043; \u95ed\u5305 &#043; Upvalue<\/td>\n<td>\u8bcd\u6cd5\u4f5c\u7528\u57df\u4e0e\u53d8\u91cf\u751f\u547d\u5468\u671f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u8fd9\u91cc\u6700\u540e\u8fd8\u9700\u8981\u533a\u5206\u4e00\u70b9&#xff1a;\u8868\u4e2d\u4fdd\u5b58\u51fd\u6570&#xff0c;\u5e76\u4e0d\u610f\u5473\u7740\u8fd9\u4e2a Table \u4e00\u5b9a\u5fc5\u987b\u88ab\u79f0\u4e3a\u201c\u5bf9\u8c61\u201d&#xff1b;\u4e00\u4e2a Table \u88ab\u7528\u4f5c\u5143\u8868&#xff0c;\u4e5f\u4e0d\u610f\u5473\u7740\u5b83\u4e0d\u80fd\u540c\u65f6\u627f\u62c5\u201c\u7c7b\u201d\u7684\u89d2\u8272\u3002\u8fd9\u4e9b\u540d\u79f0\u53ea\u662f\u6211\u4eec\u4e3a\u4e86\u7ec4\u7ec7\u7a0b\u5e8f\u800c\u8d4b\u4e88 Table \u7684\u4e0d\u540c\u804c\u8d23\u3002<\/p>\n<p>Lua \u5e76\u6ca1\u6709\u4e13\u95e8\u4e3a\u201c\u7c7b\u3001\u7ee7\u627f\u3001\u591a\u6001\u201d\u518d\u5f15\u5165\u4e00\u6574\u5957\u5b8c\u5168\u72ec\u7acb\u7684\u673a\u5236&#xff0c;\u800c\u662f\u8ba9\u5f00\u53d1\u8005\u901a\u8fc7 Table\u3001\u51fd\u6570\u3001\u5143\u8868\u548c\u95ed\u5305\u8fd9\u4e9b\u5df2\u6709\u80fd\u529b&#xff0c;\u6309\u9700\u6c42\u642d\u5efa\u81ea\u5df1\u7684\u9762\u5411\u5bf9\u8c61\u6a21\u578b\u3002<\/p>\n<p>\u7406\u89e3\u4e86\u8fd9\u6761\u903b\u8f91\u94fe&#xff0c;\u518d\u53bb\u9605\u8bfb\u6e38\u620f\u670d\u52a1\u7aef\u9879\u76ee\u4e2d\u5c01\u88c5\u7684\u7c7b\u7cfb\u7edf\u65f6&#xff0c;\u6211\u4eec\u5c31\u4e0d\u5fc5\u4e00\u5f00\u59cb\u6b7b\u8bb0\u5404\u79cd\u63a5\u53e3\u540d&#xff0c;\u800c\u662f\u53ef\u4ee5\u56de\u5230\u51e0\u4e2a\u6700\u57fa\u7840\u7684\u95ee\u9898&#xff1a;\u5bf9\u8c61\u7684\u72b6\u6001\u653e\u5728\u54ea\u91cc&#xff1f;\u516c\u5171\u65b9\u6cd5\u5b58\u5728\u54ea\u91cc&#xff1f;\u5b9e\u4f8b\u4e0e\u7c7b\u5982\u4f55\u5173\u8054&#xff1f;\u5b57\u6bb5\u67e5\u627e\u4f1a\u7ecf\u8fc7\u54ea\u4e9b Table&#xff1f;\u6784\u9020\u51fd\u6570\u5982\u4f55\u8fd4\u56de\u5b9e\u4f8b&#xff1f;\u67d0\u4e2a\u5b57\u6bb5\u7a76\u7adf\u5c5e\u4e8e\u5bf9\u8c61\u672c\u8eab&#xff0c;\u8fd8\u662f\u6765\u81ea\u95ed\u5305\u6355\u83b7\u7684\u5916\u90e8\u5c40\u90e8\u53d8\u91cf&#xff1f;<\/p>\n<p>\u53ea\u8981\u80fd\u591f\u6cbf\u7740\u8fd9\u4e9b\u95ee\u9898\u5206\u6790\u6e90\u7801&#xff0c;\u590d\u6742\u7684 Lua \u7c7b\u5c01\u88c5\u6700\u7ec8\u4e5f\u80fd\u62c6\u89e3\u4e3a\u6211\u4eec\u5df2\u7ecf\u8ba4\u8bc6\u7684\u57fa\u7840\u673a\u5236\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/11\/20261104151706-6aeb4c72df401.gif\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\/* MD \/ \u5bcc\u6587\u672c\u4e2d\u7684 .toc\uff08\u542b\u535a\u5ba2\u56ed\u642c\u5bb6\u7b49\u5d4c\u5957\u7ed3\u6784\uff09\uff1b.toc-box \u5728\u4fa7\u680f\uff0c\u4e0d\u53d7\u5f71\u54cd *\/#content_views .toc,\/* 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