Restructure rule classes.

Classes under "rulesets" have been moved to "rules", and split up into
futher subdirectories matching their library. As a result we can now
better separate the python bindings, so that things that belongs to the
simulation are separeted from things that belongs to the ai.

rules/python/PythonArithmeticFactory.cpp

@@ -0,0 +1,83 @@
+// Cyphesis Online RPG Server and AI Engine
+// Copyright (C) 2010 Alistair Riddoch
+//
+// 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.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software Foundation,
+// Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+
+
+#include "CyPy_LocatedEntity.h"
+
+#include "PythonArithmeticFactory.h"
+
+#include "Python_Script_Utils.h"
+#include "PythonArithmeticScript.h"
+
+/// \brief PythonArithmeticFactory constructor
+///
+/// @param package Name of the package containing the script
+/// @param name Name of the type within the package for the script
+PythonArithmeticFactory::PythonArithmeticFactory(const std::string & package,
+                                                 const std::string & name) :
+                                                 PythonClass(package, name)
+{
+}
+
+
+PythonArithmeticFactory::~PythonArithmeticFactory() = default;
+
+int PythonArithmeticFactory::setup()
+{
+    return load();
+}
+
+/// \brief Create a new arithmetic script for a character
+///
+/// @param chr the Character that requires a new script
+ArithmeticScript * PythonArithmeticFactory::newScript(LocatedEntity * owner)
+{
+    if (!m_class) {
+        return nullptr;
+    }
+    // Create the task, and use its script to add a script
+    if (m_class->isNull()) {
+        return nullptr;
+    }
+
+    // FIXME Pass in entity for initialisation of entity pointer in
+    // EntityWrapper.
+    Py::Object py_object;
+
+    try {
+        if (owner == nullptr) {
+            py_object = m_class->apply();
+        } else {
+            py_object = m_class->apply(Py::TupleN(CyPy_LocatedEntity::wrap(owner)));
+        }
+    } catch (const Py::BaseException& ex) {
+        if (owner) {
+            log(ERROR, "Could not create python stats instance for " + owner->describeEntity());
+        } else {
+            log(ERROR, "Could not create python stats instance");
+        }
+        if (PyErr_Occurred()) {
+            PyErr_Print();
+        }
+    }
+
+    ArithmeticScript * script = new PythonArithmeticScript(py_object);
+    // FIXME This is now part of the property, not the character.
+    // chr.statistics().m_script = script;
+
+    return script;
+}