diff --git a/src/celcompat/memory.h b/src/celcompat/memory.h
new file mode 100644
index 00000000..65f3843b
--- /dev/null
+++ b/src/celcompat/memory.h
@@ -0,0 +1,14 @@
+#pragma once
+
+#include <memory>
+
+#if !defined(_MSC_VER) && __cplusplus < 201402L
+namespace std
+{
+template<typename T, typename... Args>
+std::unique_ptr<T> make_unique(Args&&... args)
+{
+    return std::unique_ptr<T>(new T(std::forward<Args>(args)...));
+}
+}
+#endif
diff --git a/src/celscript/common/CMakeLists.txt b/src/celscript/common/CMakeLists.txt
index b300ecf3..74a81857 100644
--- a/src/celscript/common/CMakeLists.txt
+++ b/src/celscript/common/CMakeLists.txt
@@ -1,4 +1,6 @@
 set(SCRIPT_COMMON_SOURCES
+  script.cpp
+  script.h
   scriptmaps.cpp
   scriptmaps.h
 )
diff --git a/src/celscript/common/script.cpp b/src/celscript/common/script.cpp
new file mode 100644
index 00000000..039f4f93
--- /dev/null
+++ b/src/celscript/common/script.cpp
@@ -0,0 +1,38 @@
+// script.cpp
+//
+// Copyright (C) 2019, the Celestia Development Team
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+
+#include "script.h"
+
+namespace celestia
+{
+namespace scripts
+{
+
+bool IScript::handleMouseButtonEvent(float x, float y, int button, bool down)
+{
+    return false;
+}
+
+bool IScript::charEntered(const char*)
+{
+    return false;
+}
+
+bool IScript::handleKeyEvent(const char* key)
+{
+    return false;
+}
+
+bool IScript::handleTickEvent(double dt)
+{
+    return false;
+}
+
+}
+}
diff --git a/src/celscript/common/script.h b/src/celscript/common/script.h
new file mode 100644
index 00000000..c05f57ff
--- /dev/null
+++ b/src/celscript/common/script.h
@@ -0,0 +1,78 @@
+// script.h
+//
+// Copyright (C) 2019, the Celestia Development Team
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+
+#pragma once
+
+#include <memory>
+#include <celcompat/filesystem.h>
+
+class CelestiaCore;
+
+namespace celestia
+{
+namespace scripts
+{
+
+class IScript
+{
+ public:
+    virtual ~IScript() = default;
+
+    virtual bool handleMouseButtonEvent(float x, float y, int button, bool down);
+    virtual bool charEntered(const char*);
+    virtual bool handleKeyEvent(const char* key);
+    virtual bool handleTickEvent(double dt);
+    virtual bool tick(double) = 0;
+};
+
+class IScriptPlugin
+{
+ public:
+    IScriptPlugin() = delete;
+    IScriptPlugin(CelestiaCore *appcore) : m_appCore(appcore) {};
+    IScriptPlugin(const IScriptPlugin&) = delete;
+    IScriptPlugin(IScriptPlugin&&) = delete;
+    IScriptPlugin& operator=(const IScriptPlugin&) = delete;
+    IScriptPlugin& operator=(IScriptPlugin&&) = delete;
+    virtual ~IScriptPlugin() = default;
+
+    virtual bool isOurFile(const fs::path&) const = 0;
+    virtual std::unique_ptr<IScript> loadScript(const fs::path&) = 0;
+
+    CelestiaCore *appCore() const { return m_appCore; }
+
+ private:
+    CelestiaCore *m_appCore;
+};
+
+class IScriptHook
+{
+ public:
+    IScriptHook() = delete;
+    IScriptHook(CelestiaCore *appcore) : m_appCore(appcore) {};
+    IScriptHook(const IScriptHook&) = default;
+    IScriptHook(IScriptHook&&) = default;
+    IScriptHook& operator=(const IScriptHook&) = default;
+    IScriptHook& operator=(IScriptHook&&) = default;
+    virtual ~IScriptHook() = default;
+
+    virtual bool call(const char *method) const = 0;
+    virtual bool call(const char *method, const char *keyName) const = 0;
+    virtual bool call(const char *method, float x, float y) const = 0;
+    virtual bool call(const char *method, float x, float y, int b) const = 0;
+    virtual bool call(const char *method, double dt) const = 0;
+
+    CelestiaCore *appCore() const { return m_appCore; }
+
+ private:
+    CelestiaCore *m_appCore;
+};
+
+}
+}