diff --git a/src/script/script_instance.hpp b/src/script/script_instance.hpp
--- a/src/script/script_instance.hpp
+++ b/src/script/script_instance.hpp
@@ -15,6 +15,8 @@
 #include <squirrel.h>
 #include "script_suspend.hpp"
 
+#include "../command_type.h"
+
 /** Runtime information about a script like a pointer to the squirrel vm and the current state. */
 class ScriptInstance {
 public:
@@ -155,6 +157,11 @@ protected:
 	 */
 	virtual void Died();
 
+	/**
+	 * Get the callback handling DoCommands in case of networking.
+	 */
+	virtual CommandCallback *GetDoCommandCallback() = 0;
+
 private:
 	class ScriptController *controller;   ///< The script main class.
 	class ScriptStorage *storage;         ///< Some global information for each running script.