WIP node metadata, node timers

src/nodetimer.h

@@ -0,0 +1,91 @@
+/*
+Minetest-c55
+Copyright (C) 2010-2012 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+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.
+*/
+
+#ifndef NODETIMER_HEADER
+#define NODETIMER_HEADER
+
+#include "irrlichttypes.h"
+#include <iostream>
+#include <map>
+
+/*
+	NodeTimer provides per-node timed callback functionality.
+	Can be used for:
+	- Furnaces, to keep the fire burnin'
+	- "activated" nodes that snap back to their original state
+	  after a fixed amount of time (mesecons buttons, for example)
+*/
+
+class NodeTimer
+{
+public:
+	NodeTimer(): duration(0.), elapsed(0.) {}
+	NodeTimer(f32 duration_, f32 elapsed_):
+		duration(duration_), elapsed(elapsed_) {}
+	~NodeTimer() {}
+	
+	void serialize(std::ostream &os) const;
+	void deSerialize(std::istream &is);
+	
+	f32 duration;
+	f32 elapsed;
+};
+
+/*
+	List of timers of all the nodes of a block
+*/
+
+class NodeTimerList
+{
+public:
+	NodeTimerList() {}
+	~NodeTimerList() {}
+	
+	void serialize(std::ostream &os) const;
+	void deSerialize(std::istream &is);
+	
+	// Get timer
+	NodeTimer get(v3s16 p){
+		std::map<v3s16, NodeTimer>::iterator n = m_data.find(p);
+		if(n == m_data.end())
+			return NodeTimer();
+		return n->second;
+	}
+	// Deletes timer
+	void remove(v3s16 p){
+		m_data.erase(p);
+	}
+	// Deletes old timer and sets a new one
+	void set(v3s16 p, NodeTimer t){
+		m_data[p] = t;
+	}
+	// Deletes all timers
+	void clear(){
+		m_data.clear();
+	}
+
+	// A step in time. Returns map of elapsed timers.
+	std::map<v3s16, f32> step(float dtime);
+
+private:
+	std::map<v3s16, NodeTimer> m_data;
+};
+
+#endif
+