WIP node metadata, node timers

1 files changed, 141 insertions, 0 deletions

diff --git a/src/nodetimer.cpp b/src/nodetimer.cpp
new file mode 100644
index 000000000..b081bf66e
--- /dev/null
+++ b/src/nodetimer.cpp
@@ -0,0 +1,141 @@
+/*
+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.
+*/
+
+#include "nodetimer.h"
+#include "utility.h"
+#include "log.h"
+
+/*
+	NodeTimer
+*/
+
+void NodeTimer::serialize(std::ostream &os) const
+{
+	writeF1000(os, duration);
+	writeF1000(os, elapsed);
+}
+
+void NodeTimer::deSerialize(std::istream &is)
+{
+	duration = readF1000(is);
+	elapsed = readF1000(is);
+}
+
+/*
+	NodeTimerList
+*/
+
+void NodeTimerList::serialize(std::ostream &os) const
+{
+	/*
+		Version 0 is a placeholder for "nothing to see here; go away."
+	*/
+
+	if(m_data.size() == 0){
+		writeU8(os, 0); // version
+		return;
+	}
+
+	writeU8(os, 1); // version
+	writeU16(os, m_data.size());
+
+	for(std::map<v3s16, NodeTimer>::const_iterator
+			i = m_data.begin();
+			i != m_data.end(); i++){
+		v3s16 p = i->first;
+		NodeTimer t = i->second;
+
+		u16 p16 = p.Z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + p.Y*MAP_BLOCKSIZE + p.X;
+		writeU16(os, p16);
+		t.serialize(os);
+	}
+}
+
+void NodeTimerList::deSerialize(std::istream &is)
+{
+	m_data.clear();
+
+	u8 version = readU8(is);
+	if(version == 0)
+		return;
+	if(version != 1)
+		throw SerializationError("unsupported NodeTimerList version");
+
+	u16 count = readU16(is);
+
+	for(u16 i=0; i<count; i++)
+	{
+		u16 p16 = readU16(is);
+
+		v3s16 p(0,0,0);
+		p.Z += p16 / MAP_BLOCKSIZE / MAP_BLOCKSIZE;
+		p16 -= p.Z * MAP_BLOCKSIZE * MAP_BLOCKSIZE;
+		p.Y += p16 / MAP_BLOCKSIZE;
+		p16 -= p.Y * MAP_BLOCKSIZE;
+		p.X += p16;
+
+		NodeTimer t;
+		t.deSerialize(is);
+
+		if(t.duration <= 0)
+		{
+			infostream<<"WARNING: NodeTimerList::deSerialize(): "
+					<<"invalid data at position"
+					<<"("<<p.X<<","<<p.Y<<","<<p.Z<<"): Ignoring."
+					<<std::endl;
+			continue;
+		}
+
+		if(m_data.find(p) != m_data.end())
+		{
+			infostream<<"WARNING: NodeTimerList::deSerialize(): "
+					<<"already set data at position"
+					<<"("<<p.X<<","<<p.Y<<","<<p.Z<<"): Ignoring."
+					<<std::endl;
+			continue;
+		}
+
+		m_data.insert(std::make_pair(p, t));
+	}
+}
+
+std::map<v3s16, f32> NodeTimerList::step(float dtime)
+{
+	std::map<v3s16, f32> elapsed_timers;
+	// Increment timers
+	for(std::map<v3s16, NodeTimer>::iterator
+			i = m_data.begin();
+			i != m_data.end(); i++){
+		v3s16 p = i->first;
+		NodeTimer t = i->second;
+		t.elapsed += dtime;
+		if(t.elapsed >= t.duration)
+			elapsed_timers.insert(std::make_pair(p, t.elapsed));
+		else
+			i->second = t;
+	}
+	// Delete elapsed timers
+	for(std::map<v3s16, f32>::const_iterator
+			i = elapsed_timers.begin();
+			i != elapsed_timers.end(); i++){
+		v3s16 p = i->first;
+		m_data.erase(p);
+	}
+	return elapsed_timers;
+}