{"id":80,"date":"2019-09-26T23:28:01","date_gmt":"2019-09-26T15:28:01","guid":{"rendered":"http:\/\/www.blinkedu.cn\/?p=80"},"modified":"2019-09-26T23:32:42","modified_gmt":"2019-09-26T15:32:42","slug":"%e8%ae%be%e8%ae%a1%e6%a8%a1%e5%bc%8f%ef%bc%9a%e5%91%bd%e4%bb%a4%e6%a8%a1%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/www.blinkedu.cn\/index.php\/2019\/09\/26\/%e8%ae%be%e8%ae%a1%e6%a8%a1%e5%bc%8f%ef%bc%9a%e5%91%bd%e4%bb%a4%e6%a8%a1%e5%bc%8f\/","title":{"rendered":"\u8bbe\u8ba1\u6a21\u5f0f\uff1a\u547d\u4ee4\u6a21\u5f0f"},"content":{"rendered":"<ul>\n<li>\u6700\u8fd1\u5728\u9879\u76ee\u4e2d\u9700\u8981\u5b9e\u73b0\u5feb\u6377\u952e\u529f\u80fd\uff0c\u901a\u8fc7\u5feb\u6377\u952e\u6253\u5f00\u6e38\u620f\u4e2d\u4e00\u4e9b\u754c\u9762\uff0c\u7ecf\u8fc7\u4e00\u4e9b\u53c2\u8003\u5b66\u4e60\uff0c\u4f7f\u7528\u547d\u4ee4\u6a21\u5f0f\u5b9e\u73b0\u4e86\u8fd9\u4e2a\u529f\u80fd\u3002\u5199\u8fd9\u7bc7\u535a\u5ba2\u4e5f\u662f\u4e3a\u4e86\u7b80\u5355\u8bb0\u5f55\u4e00\u4e0b\u81ea\u5df1\u5b9e\u73b0\u601d\u8def\uff0c\u65b9\u4fbf\u4ee5\u540e\u67e5\u770b<\/li>\n<li>\u5982\u679c\u6709\u4ec0\u4e48\u5730\u65b9\u4e0d\u5408\u7406\u6216\u8005\u6709\u9519\u8bef\uff0c\u8fd8\u8bf7\u5404\u4f4d\u5927\u4f6c\u7559\u8a00\u6307\u70b9\u4e00\u4e0b\uff0c\u5728\u4e0b\u4e0d\u80dc\u611f\u6fc0<\/li>\n<\/ul>\n<h2>\u4ecb\u7ecd<\/h2>\n<blockquote>\n<p><strong>\u610f\u56fe\uff1a<\/strong>\u5c06\u4e00\u4e2a\u8bf7\u6c42\u5c01\u88c5\u6210\u4e00\u4e2a\u5bf9\u8c61\uff0c\u4ece\u800c\u4f7f\u60a8\u53ef\u4ee5\u7528\u4e0d\u540c\u7684\u8bf7\u6c42\u5bf9\u5ba2\u6237\u8fdb\u884c\u53c2\u6570\u5316\u3002<\/p>\n<p><strong>\u4e3b\u8981\u89e3\u51b3\uff1a<\/strong>\u5728\u8f6f\u4ef6\u7cfb\u7edf\u4e2d\uff0c\u884c\u4e3a\u8bf7\u6c42\u8005\u4e0e\u884c\u4e3a\u5b9e\u73b0\u8005\u901a\u5e38\u662f\u4e00\u79cd\u7d27\u8026\u5408\u7684\u5173\u7cfb\uff0c\u4f46\u67d0\u4e9b\u573a\u5408\uff0c\u6bd4\u5982\u9700\u8981\u5bf9\u884c\u4e3a\u8fdb\u884c\u8bb0\u5f55\u3001\u64a4\u9500\u6216\u91cd\u505a\u3001\u4e8b\u52a1\u7b49\u5904\u7406\u65f6\uff0c\u8fd9\u79cd\u65e0\u6cd5\u62b5\u5fa1\u53d8\u5316\u7684\u7d27\u8026\u5408\u7684\u8bbe\u8ba1\u5c31\u4e0d\u592a\u5408\u9002\u3002<\/p>\n<p><strong>\u4f55\u65f6\u4f7f\u7528\uff1a<\/strong>\u5728\u67d0\u4e9b\u573a\u5408\uff0c\u6bd4\u5982\u8981\u5bf9\u884c\u4e3a\u8fdb\u884c&#8221;\u8bb0\u5f55\u3001\u64a4\u9500\/\u91cd\u505a\u3001\u4e8b\u52a1&#8221;\u7b49\u5904\u7406\uff0c\u8fd9\u79cd\u65e0\u6cd5\u62b5\u5fa1\u53d8\u5316\u7684\u7d27\u8026\u5408\u662f\u4e0d\u5408\u9002\u7684\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5982\u4f55\u5c06&#8221;\u884c\u4e3a\u8bf7\u6c42\u8005&#8221;\u4e0e&#8221;\u884c\u4e3a\u5b9e\u73b0\u8005&#8221;\u89e3\u8026\uff1f\u5c06\u4e00\u7ec4\u884c\u4e3a\u62bd\u8c61\u4e3a\u5bf9\u8c61\uff0c\u53ef\u4ee5\u5b9e\u73b0\u4e8c\u8005\u4e4b\u95f4\u7684\u677e\u8026\u5408\u3002<\/p>\n<p><strong>\u5982\u4f55\u89e3\u51b3\uff1a<\/strong>\u901a\u8fc7\u8c03\u7528\u8005\u8c03\u7528\u63a5\u53d7\u8005\u6267\u884c\u547d\u4ee4\uff0c\u987a\u5e8f\uff1a\u8c03\u7528\u8005\u2192\u63a5\u53d7\u8005\u2192\u547d\u4ee4\u3002<\/p>\n<p><strong>\u5173\u952e\u4ee3\u7801\uff1a<\/strong>\u5b9a\u4e49\u4e09\u4e2a\u89d2\u8272\uff1a1\u3001received \u771f\u6b63\u7684\u547d\u4ee4\u6267\u884c\u5bf9\u8c61 2\u3001Command 3\u3001invoker \u4f7f\u7528\u547d\u4ee4\u5bf9\u8c61\u7684\u5165\u53e3<\/p>\n<p><strong>\u5e94\u7528\u5b9e\u4f8b\uff1a<\/strong>struts 1 \u4e2d\u7684 action \u6838\u5fc3\u63a7\u5236\u5668 ActionServlet \u53ea\u6709\u4e00\u4e2a\uff0c\u76f8\u5f53\u4e8e Invoker\uff0c\u800c\u6a21\u578b\u5c42\u7684\u7c7b\u4f1a\u968f\u7740\u4e0d\u540c\u7684\u5e94\u7528\u6709\u4e0d\u540c\u7684\u6a21\u578b\u7c7b\uff0c\u76f8\u5f53\u4e8e\u5177\u4f53\u7684 Command\u3002<\/p>\n<p><strong>\u4f18\u70b9\uff1a<\/strong> 1\u3001\u964d\u4f4e\u4e86\u7cfb\u7edf\u8026\u5408\u5ea6\u3002 2\u3001\u65b0\u7684\u547d\u4ee4\u53ef\u4ee5\u5f88\u5bb9\u6613\u6dfb\u52a0\u5230\u7cfb\u7edf\u4e2d\u53bb\u3002<\/p>\n<p><strong>\u7f3a\u70b9\uff1a<\/strong>\u4f7f\u7528\u547d\u4ee4\u6a21\u5f0f\u53ef\u80fd\u4f1a\u5bfc\u81f4\u67d0\u4e9b\u7cfb\u7edf\u6709\u8fc7\u591a\u7684\u5177\u4f53\u547d\u4ee4\u7c7b\u3002<\/p>\n<p><strong>\u4f7f\u7528\u573a\u666f\uff1a<\/strong>\u8ba4\u4e3a\u662f\u547d\u4ee4\u7684\u5730\u65b9\u90fd\u53ef\u4ee5\u4f7f\u7528\u547d\u4ee4\u6a21\u5f0f\uff0c\u6bd4\u5982\uff1a 1\u3001GUI \u4e2d\u6bcf\u4e00\u4e2a\u6309\u94ae\u90fd\u662f\u4e00\u6761\u547d\u4ee4\u3002 2\u3001\u6a21\u62df CMD\u3002<\/p>\n<p><strong>\u6ce8\u610f\u4e8b\u9879\uff1a<\/strong>\u7cfb\u7edf\u9700\u8981\u652f\u6301\u547d\u4ee4\u7684\u64a4\u9500(Undo)\u64cd\u4f5c\u548c\u6062\u590d(Redo)\u64cd\u4f5c\uff0c\u4e5f\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u547d\u4ee4\u6a21\u5f0f\uff0c\u89c1\u547d\u4ee4\u6a21\u5f0f\u7684\u6269\u5c55\u3002\n<\/p>\n<\/blockquote>\n<h2>\u547d\u4ee4\u6a21\u5f0f\u7ed3\u6784\u56fe<\/h2>\n<p><img decoding=\"async\" layer-src=\"https:\/\/i.loli.net\/2019\/09\/26\/XS2zW3h5Bxeuptl.png\" src=\"https:\/\/i.loli.net\/2019\/09\/26\/XS2zW3h5Bxeuptl.png\" alt=\"\u300a\u8bbe\u8ba1\u6a21\u5f0f\uff1a\u547d\u4ee4\u6a21\u5f0f\u300b\" \/><\/p>\n<h2>\u4f8b\u5b50\uff1a\u4f7f\u7528\u547d\u4ee4\u6a21\u5f0f\u5b9e\u73b0\u6e38\u620f\u5feb\u6377\u952e<\/h2>\n<h4>\u6309\u952e\u547d\u4ee4\u57fa\u7c7b<\/h4>\n<pre><code class=\"language-csharp line-numbers\">public abstract class CommandBase\n{\n    \/\/ \u547d\u540d\u7684\u529f\u80fd\u6267\u884c\u8005\uff08Receiver\uff09\n    protected InputController m_Controller = null;\n\n    public CommandBase(InputController controller)\n    {\n        this.m_Controller = controller;\n    }\n\n    \/\/ \u6267\u884c\u547d\u4ee4\n    public abstract void Execute();\n    \/\/ \u64a4\u6d88\u547d\u4ee4\n    public abstract void Undo();\n}\n<\/code><\/pre>\n<h4>\u5177\u4f53\u7684\u547d\u4ee4\uff1a\u80cc\u5305\u547d\u4ee4\uff08\u6253\u5f00\/\u5173\u95ed\uff09<\/h4>\n<pre><code class=\"language-csharp line-numbers\">public class BagCommand : CommandBase\n{\n    public BagCommand(InputController controller) : base(controller)\n    {\n\n    }\n\n    public override void Execute()\n    {\n        m_Controller.OpenKnapsack();\n    }\n\n    \/\/ \u64a4\u6d88\u6253\u5f00\u80cc\u5305\u754c\u9762\u7684\u5b9e\u9645\u64cd\u4f5c\u662f\u5173\u95ed\u80cc\u5305\u754c\u9762\uff0c\u6240\u4ee5\u5728\u8fd9\u91cc\u7684\u8fdb\u884c\u5173\u95ed\u80cc\u5305\u754c\u9762\n    public override void Undo()\n    {\n        m_Controller.CloseKnapsack();\n    }\n}\n<\/code><\/pre>\n<h4>\u547d\u4ee4\u7684\u6267\u884c\u8005(Receiver)<\/h4>\n<pre><code class=\"language-csharp line-numbers\">using UnityEngine;\n\n\/\/\/ &lt;summary&gt;\n\/\/\/ Receiver\uff08\u529f\u80fd\u7684\u6267\u884c\u8005\uff09\n\/\/\/ &lt;\/summary&gt;\npublic class InputController\n{\n    public void OpenKnapsack()\n    {\n        Debug.Log(&quot;\u6253\u5f00\u80cc\u5305&quot;);\n    }\n\n    public void CloseKnapsack()\n    {\n        Debug.Log(&quot;\u5173\u95ed\u80cc\u5305&quot;);\n    }\n}\n<\/code><\/pre>\n<h4>\u547d\u4ee4\u7684\u7ba1\u7406\u8005\uff08Invoker\uff09<\/h4>\n<pre><code class=\"language-csharp line-numbers\">using UnityEngine;\n\npublic class InputMgr : MonoBehaviour\n{\n    private InputController m_Controller = null;\n    private CommandBase m_BagCommand = null;\n\n    \/\/ \u4fdd\u5b58\u4e0a\u4e00\u4e2a\u8f93\u5165\u7684\u547d\u4ee4\n    private CommandBase m_LastCommand = null;\n    \/\/ \u5b58\u50a8\u6309\u952e\u7684\u6570\u7ec4(\u5728\u5b9e\u9645\u7684\u9879\u76ee\u4e2d\u53ef\u4ee5\u5b9e\u73b0\u73a9\u5bb6\u81ea\u5b9a\u4e49\u5feb\u6377\u952e)\n    private string[] m_Keys = new string[] { &quot;b&quot; };\n\n    private void Awake()\n    {\n        \/\/ \u521d\u59cb\u5316\n        m_Controller = new InputController();\n        m_BagCommand = new BagCommand(m_Controller);\n    }\n\n    private void Update()\n    {\n        CommandBase cmd = InputHandle();\n        if (cmd != null)\n        {\n            \/**\n             *  1.\u5982\u679c\u8f93\u5165\u547d\u4ee4\u548c\u4e0a\u4e00\u4e2a\u547d\u4ee4\u4e00\u6837\uff0c\u5219\u8fdb\u884c\u64a4\u6d88\u64cd\u4f5c\n             *  2.\u5426\u5219\u5c31\u6267\u884c\u65b0\u7684\u547d\u4ee4\uff0c\u5e76\u66f4\u65b0lastCommand\n             *\/\n            if (cmd == m_LastCommand)\n            {\n                cmd.Undo();\n                m_LastCommand = null;\n            }\n            else\n            {\n                cmd.Execute();\n                m_LastCommand = cmd;\n            }\n        }\n    }\n\n    private CommandBase InputHandle()\n    {\n        if (Input.GetKeyDown(m_Keys[0]))\n        {\n            return m_BagCommand;\n        }\n\n        \/\/ .....\n\n        return null;\n    }\n}\n<\/code><\/pre>\n<ul>\n<li>\u5c06InputMgr\u6302\u8f7d\u5230\u4e00\u4e2a\u7a7a\u7269\u4f53\u4e0a\uff0c\u6309B\u952e\u540e\u4f1a\u5728\u63a7\u5236\u53f0\u8f93\u5165\uff1a\u6253\u5f00\u80cc\u5305\uff0c\u518d\u6b21\u6309B\u952e\u4f1a\u8f93\u51fa\u5173\u95ed\u80cc\u5305<br \/>\n<img decoding=\"async\" layer-src=\"https:\/\/i.loli.net\/2019\/09\/26\/z63E8WrZ9n5FHci.png\" src=\"https:\/\/i.loli.net\/2019\/09\/26\/z63E8WrZ9n5FHci.png\" alt=\"\u300a\u8bbe\u8ba1\u6a21\u5f0f\uff1a\u547d\u4ee4\u6a21\u5f0f\u300b\"><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u6700\u8fd1\u5728\u9879\u76ee\u4e2d\u9700\u8981\u5b9e\u73b0\u5feb\u6377\u952e\u529f\u80fd\uff0c\u901a\u8fc7\u5feb\u6377\u952e\u6253\u5f00\u6e38\u620f\u4e2d\u4e00\u4e9b\u754c\u9762\uff0c\u7ecf\u8fc7\u4e00\u4e9b\u53c2\u8003\u5b66\u4e60\uff0c\u4f7f\u7528\u547d\u4ee4\u6a21\u5f0f\u5b9e\u73b0\u4e86\u8fd9\u4e2a\u529f\u80fd\u3002\u5199\u8fd9\u7bc7\u535a\u5ba2\u4e5f\u662f\u4e3a\u4e86\u7b80\u5355\u8bb0\u5f55\u4e00\u4e0b\u81ea\u5df1\u5b9e\u73b0\u601d\u8def\uff0c\u65b9\u4fbf\u4ee5\u540e\u67e5\u770b \u5982\u679c\u6709\u4ec0\u4e48\u5730\u65b9\u4e0d\u5408\u7406\u6216\u8005\u6709\u9519\u8bef\uff0c\u8fd8\u8bf7\u5404\u4f4d\u5927\u4f6c\u7559\u8a00\u6307\u70b9\u4e00\u4e0b\uff0c\u5728\u4e0b\u4e0d\u80dc\u611f\u6fc0 \u4ecb\u7ecd 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