(svn r26612) -Add: Method to copy newgrf parameters.

src/newgrf_config.cpp

@@ -107,6 +107,17 @@ GRFConfig::~GRFConfig()
 	for (uint i = 0; i < this->param_info.Length(); i++) delete this->param_info[i];
 }
 
+/**
+ * Copy the parameter information from the \a src config.
+ * @param src Source config.
+ */
+void GRFConfig::CopyParams(const GRFConfig &src)
+{
+	this->num_params = src.num_params;
+	this->num_valid_params = src.num_valid_params;
+	MemCpyT<uint32>(this->param, src.param, lengthof(this->param));
+}
+
 /**
  * Get the name of this grf. In case the name isn't known
  * the filename is returned.

src/newgrf_config.h

@@ -177,6 +177,8 @@ struct GRFConfig : ZeroedMemoryAllocator {
 
 	struct GRFConfig *next;                        ///< NOSAVE: Next item in the linked list
 
+	void CopyParams(const GRFConfig &src);
+
 	bool IsOpenTTDBaseGRF() const;
 
 	const char *GetTextfile(TextfileType type) const;