完成command类

src/command.cpp

@@ -0,0 +1,33 @@
+#include "scene.h"
+#include "command.h"
+
+CCommand::CCommand(CScene *pOwner) : _pOwner(pOwner)
+{}
+
+CCommand::CCommand(const CCommand &rhs)
+: _pOwner(rhs._pOwner.get())
+, _stPoint(rhs._stPoint)
+, _nPreValue(rhs._nPreValue)
+, _nCurValue(rhs._nCurValue)
+{}
+
+CCommand::~CCommand(){}
+
+bool CCommand::excute(int nInputValue)
+{
+    if (!_pOwner)
+        return false;
+
+    _stPoint = _pOwner.get()->getCurPoint();
+    return _pOwner.get()->setCurValue(nInputValue, _nPreValue);
+}
+
+void CCommand::undo()
+{
+    if (_pOwner)
+    {
+        _pOwner.get()->setPointValue(_stPoint, _nPreValue);
+    }
+
+    return;
+}

src/command.h

@@ -8,10 +8,11 @@ class CScene;
 class CCommand
 {
 public:
-    CCommand(std::shared_ptr<CScene> pOwner);
+    CCommand(CScene* pOwner);
+    CCommand(const CCommand &);
     ~CCommand();
 
-    void excute();
+    bool excute(int nInputValue);
     void undo();
 
 private: