1 files changed, 113 insertions, 0 deletions
diff --git a/src/objdef.h b/src/objdef.h
new file mode 100644
index 000000000..e40324a88
--- /dev/null
+++ b/src/objdef.h
@@ -0,0 +1,113 @@
+/*
+Minetest
+Copyright (C) 2010-2015 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser 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.
+*/
+
+#pragma once
+
+#include "util/basic_macros.h"
+#include "porting.h"
+
+class IGameDef;
+class NodeDefManager;
+
+#define OBJDEF_INVALID_INDEX ((u32)(-1))
+#define OBJDEF_INVALID_HANDLE 0
+#define OBJDEF_HANDLE_SALT 0x00585e6fu
+#define OBJDEF_MAX_ITEMS (1 << 18)
+#define OBJDEF_UID_MASK ((1 << 7) - 1)
+
+typedef u32 ObjDefHandle;
+
+enum ObjDefType {
+	OBJDEF_GENERIC,
+	OBJDEF_BIOME,
+	OBJDEF_ORE,
+	OBJDEF_DECORATION,
+	OBJDEF_SCHEMATIC,
+};
+
+class ObjDef {
+public:
+	virtual ~ObjDef() = default;
+
+	// Only implemented by child classes (leafs in class hierarchy)
+	// Should create new object of its own type, call cloneTo() of parent class
+	// and copy its own instance variables over
+	virtual ObjDef *clone() const = 0;
+
+	u32 index;
+	u32 uid;
+	ObjDefHandle handle;
+	std::string name;
+
+protected:
+	// Only implemented by classes that have children themselves
+	// by copying the defintion and changing that argument type (!!!)
+	// Should defer to parent class cloneTo() if applicable and then copy
+	// over its own properties
+	void cloneTo(ObjDef *def) const;
+};
+
+// WARNING: Ownership of ObjDefs is transferred to the ObjDefManager it is
+// added/set to.  Note that ObjDefs managed by ObjDefManager are NOT refcounted,
+// so the same ObjDef instance must not be referenced multiple
+// TODO: const correctness for getter methods
+class ObjDefManager {
+public:
+	ObjDefManager(IGameDef *gamedef, ObjDefType type);
+	virtual ~ObjDefManager();
+	DISABLE_CLASS_COPY(ObjDefManager);
+
+	// T *clone() const; // implemented in child class with correct type
+
+	virtual const char *getObjectTitle() const { return "ObjDef"; }
+
+	virtual void clear();
+	virtual ObjDef *getByName(const std::string &name) const;
+
+	//// Add new/get/set object definitions by handle
+	virtual ObjDefHandle add(ObjDef *obj);
+	virtual ObjDef *get(ObjDefHandle handle) const;
+	virtual ObjDef *set(ObjDefHandle handle, ObjDef *obj);
+
+	//// Raw variants that work on indexes
+	virtual u32 addRaw(ObjDef *obj);
+
+	// It is generally assumed that getRaw() will always return a valid object
+	// This won't be true if people do odd things such as call setRaw() with NULL
+	virtual ObjDef *getRaw(u32 index) const;
+	virtual ObjDef *setRaw(u32 index, ObjDef *obj);
+
+	size_t getNumObjects() const { return m_objects.size(); }
+	ObjDefType getType() const { return m_objtype; }
+	const NodeDefManager *getNodeDef() const { return m_ndef; }
+
+	u32 validateHandle(ObjDefHandle handle) const;
+	static ObjDefHandle createHandle(u32 index, ObjDefType type, u32 uid);
+	static bool decodeHandle(ObjDefHandle handle, u32 *index,
+		ObjDefType *type, u32 *uid);
+
+protected:
+	ObjDefManager() {};
+	// Helper for child classes to implement clone()
+	void cloneTo(ObjDefManager *mgr) const;
+
+	const NodeDefManager *m_ndef;
+	std::vector<ObjDef *> m_objects;
+	ObjDefType m_objtype;
+};