Add names to NodeMetadata

src/content_nodemeta.cpp

@@ -38,7 +38,7 @@ SignNodeMetadata::SignNodeMetadata(IGameDef *gamedef, std::string text):
 	NodeMetadata(gamedef),
 	m_text(text)
 {
-	NodeMetadata::registerType(typeId(), create);
+	NodeMetadata::registerType(typeId(), typeName(), create);
 }
 u16 SignNodeMetadata::typeId() const
 {
@@ -72,7 +72,7 @@ ChestNodeMetadata proto_ChestNodeMetadata(NULL);
 ChestNodeMetadata::ChestNodeMetadata(IGameDef *gamedef):
 	NodeMetadata(gamedef)
 {
-	NodeMetadata::registerType(typeId(), create);
+	NodeMetadata::registerType(typeId(), typeName(), create);
 	
 	m_inventory = new Inventory();
 	m_inventory->addList("0", 8*4);
@@ -135,7 +135,7 @@ LockingChestNodeMetadata proto_LockingChestNodeMetadata(NULL);
 LockingChestNodeMetadata::LockingChestNodeMetadata(IGameDef *gamedef):
 	NodeMetadata(gamedef)
 {
-	NodeMetadata::registerType(typeId(), create);
+	NodeMetadata::registerType(typeId(), typeName(), create);
 
 	m_inventory = new Inventory();
 	m_inventory->addList("0", 8*4);
@@ -200,7 +200,7 @@ FurnaceNodeMetadata proto_FurnaceNodeMetadata(NULL);
 FurnaceNodeMetadata::FurnaceNodeMetadata(IGameDef *gamedef):
 	NodeMetadata(gamedef)
 {
-	NodeMetadata::registerType(typeId(), create);
+	NodeMetadata::registerType(typeId(), typeName(), create);
 	
 	m_inventory = new Inventory();
 	m_inventory->addList("fuel", 1);

src/content_nodemeta.h

@@ -31,6 +31,8 @@ public:
 	//~SignNodeMetadata();
 	
 	virtual u16 typeId() const;
+	virtual const char* typeName() const
+	{ return "sign"; }
 	static NodeMetadata* create(std::istream &is, IGameDef *gamedef);
 	virtual NodeMetadata* clone(IGameDef *gamedef);
 	virtual void serializeBody(std::ostream &os);
@@ -51,6 +53,8 @@ public:
 	~ChestNodeMetadata();
 	
 	virtual u16 typeId() const;
+	virtual const char* typeName() const
+	{ return "chest"; }
 	static NodeMetadata* create(std::istream &is, IGameDef *gamedef);
 	virtual NodeMetadata* clone(IGameDef *gamedef);
 	virtual void serializeBody(std::ostream &os);
@@ -70,6 +74,8 @@ public:
 	~LockingChestNodeMetadata();
 
 	virtual u16 typeId() const;
+	virtual const char* typeName() const
+	{ return "locked_chest"; }
 	static NodeMetadata* create(std::istream &is, IGameDef *gamedef);
 	virtual NodeMetadata* clone(IGameDef *gamedef);
 	virtual void serializeBody(std::ostream &os);
@@ -93,6 +99,8 @@ public:
 	~FurnaceNodeMetadata();
 	
 	virtual u16 typeId() const;
+	virtual const char* typeName() const
+	{ return "furnace"; }
 	virtual NodeMetadata* clone(IGameDef *gamedef);
 	static NodeMetadata* create(std::istream &is, IGameDef *gamedef);
 	virtual void serializeBody(std::ostream &os);

src/nodemetadata.cpp

@@ -31,6 +31,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 */
 
 core::map<u16, NodeMetadata::Factory> NodeMetadata::m_types;
+core::map<std::string, NodeMetadata::Factory> NodeMetadata::m_names;
 
 NodeMetadata::NodeMetadata(IGameDef *gamedef):
 	m_gamedef(gamedef)
@@ -41,6 +42,36 @@ NodeMetadata::~NodeMetadata()
 {
 }
 
+NodeMetadata* NodeMetadata::create(const std::string &name, IGameDef *gamedef)
+{
+	// Find factory function
+	core::map<std::string, Factory>::Node *n;
+	n = m_names.find(name);
+	if(n == NULL)
+	{
+		// If factory is not found, just return.
+		errorstream<<"WARNING: NodeMetadata: No factory for name=\""
+				<<name<<"\""<<std::endl;
+		return NULL;
+	}
+	
+	// Try to load the metadata. If it fails, just return.
+	try
+	{
+		std::istringstream iss("", std::ios_base::binary);
+		
+		Factory f = n->getValue();
+		NodeMetadata *meta = (*f)(iss, gamedef);
+		return meta;
+	}
+	catch(SerializationError &e)
+	{
+		errorstream<<"NodeMetadata: SerializationError "
+				<<"while creating name=\""<<name<<"\""<<std::endl;
+		return NULL;
+	}
+}
+
 NodeMetadata* NodeMetadata::deSerialize(std::istream &is, IGameDef *gamedef)
 {
 	// Read id
@@ -89,13 +120,20 @@ void NodeMetadata::serialize(std::ostream &os)
 	os<<serializeString(oss.str());
 }
 
-void NodeMetadata::registerType(u16 id, Factory f)
+void NodeMetadata::registerType(u16 id, const std::string &name, Factory f)
 {
-	core::map<u16, Factory>::Node *n;
+	{ // typeId
-	n = m_types.find(id);
+		core::map<u16, Factory>::Node *n;
-	if(n)
+		n = m_types.find(id);
-		return;
+		if(!n)
-	m_types.insert(id, f);
+			m_types.insert(id, f);
+	}
+	{ // typeName
+		core::map<std::string, Factory>::Node *n;
+		n = m_names.find(name);
+		if(!n)
+			m_names.insert(name, f);
+	}
 }
 
 /*

src/nodemetadata.h

@@ -20,7 +20,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #ifndef NODEMETADATA_HEADER
 #define NODEMETADATA_HEADER
 
-#include "common_irrlicht.h"
+#include "irrlichttypes.h"
 #include <string>
 #include <iostream>
 
@@ -44,11 +44,12 @@ public:
 	NodeMetadata(IGameDef *gamedef);
 	virtual ~NodeMetadata();
 	
+	static NodeMetadata* create(const std::string &name, IGameDef *gamedef);
 	static NodeMetadata* deSerialize(std::istream &is, IGameDef *gamedef);
 	void serialize(std::ostream &os);
 	
-	// This usually is the CONTENT_ value
 	virtual u16 typeId() const = 0;
+	virtual const char* typeName() const = 0;
 	virtual NodeMetadata* clone(IGameDef *gamedef) = 0;
 	virtual void serializeBody(std::ostream &os) = 0;
 	virtual std::string infoText() {return "";}
@@ -69,10 +70,11 @@ public:
 	virtual std::string getText(){ return ""; }
 	virtual void setText(const std::string &t){}
 protected:
-	static void registerType(u16 id, Factory f);
+	static void registerType(u16 id, const std::string &name, Factory f);
 	IGameDef *m_gamedef;
 private:
 	static core::map<u16, Factory> m_types;
+	static core::map<std::string, Factory> m_names;
 };
 
 /*