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/*
Minetest
Copyright (C) 2010-2013 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 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.
*/
#include "nodetimer.h"
#include "log.h"
#include "serialization.h"
#include "util/serialize.h"
#include "constants.h" // MAP_BLOCKSIZE
/*
NodeTimer
*/
void NodeTimer::serialize(std::ostream &os) const
{
writeF1000(os, timeout);
writeF1000(os, elapsed);
}
void NodeTimer::deSerialize(std::istream &is)
{
timeout = readF1000(is);
elapsed = readF1000(is);
}
/*
NodeTimerList
*/
void NodeTimerList::serialize(std::ostream &os, u8 map_format_version) const
{
if (map_format_version == 24) {
// Version 0 is a placeholder for "nothing to see here; go away."
if (m_timers.empty()) {
writeU8(os, 0); // version
return;
}
writeU8(os, 1); // version
writeU16(os, m_timers.size());
}
if (map_format_version >= 25) {
writeU8(os, 2 + 4 + 4); // length of the data for a single timer
writeU16(os, m_timers.size());
}
for (std::multimap<double, NodeTimer>::const_iterator
i = m_timers.begin();
i != m_timers.end(); ++i) {
NodeTimer t = i->second;
NodeTimer nt = NodeTimer(t.timeout,
t.timeout - (f32)(i->first - m_time), t.position);
v3s16 p = t.position;
u16 p16 = p.Z * MAP_BLOCKSIZE * MAP_BLOCKSIZE + p.Y * MAP_BLOCKSIZE + p.X;
writeU16(os, p16);
nt.serialize(os);
}
}
void NodeTimerList::deSerialize(std::istream &is, u8 map_format_version)
{
clear();
if (map_format_version == 24) {
u8 timer_version = readU8(is);
if(timer_version == 0)
return;
if(timer_version != 1)
throw SerializationError("unsupported NodeTimerList version");
}
if (map_format_version >= 25) {
u8 timer_data_len = readU8(is);
if(timer_data_len != 2+4+4)
throw SerializationError("unsupported NodeTimer data length");
}
u16 count = readU16(is);
for (u16 i = 0; i < count; i++) {
u16 p16 = readU16(is);
v3s16 p;
p.Z = p16 / MAP_BLOCKSIZE / MAP_BLOCKSIZE;
p16 &= MAP_BLOCKSIZE * MAP_BLOCKSIZE - 1;
p.Y = p16 / MAP_BLOCKSIZE;
p16 &= MAP_BLOCKSIZE - 1;
p.X = p16;
NodeTimer t(p);
t.deSerialize(is);
if (t.timeout <= 0) {
warningstream<<"NodeTimerList::deSerialize(): "
<<"invalid data at position"
<<"("<<p.X<<","<<p.Y<<","<<p.Z<<"): Ignoring."
<<std::endl;
continue;
}
if (m_iterators.find(p) != m_iterators.end()) {
warningstream<<"NodeTimerList::deSerialize(): "
<<"already set data at position"
<<"("<<p.X<<","<<p.Y<<","<<p.Z<<"): Ignoring."
<<std::endl;
continue;
}
insert(t);
}
}
std::vector<NodeTimer> NodeTimerList::step(float dtime)
{
std::vector<NodeTimer> elapsed_timers;
m_time += dtime;
if (m_next_trigger_time == -1. || m_time < m_next_trigger_time) {
return elapsed_timers;
}
std::multimap<double, NodeTimer>::iterator i = m_timers.begin();
// Process timers
for (; i != m_timers.end() && i->first <= m_time; ++i) {
NodeTimer t = i->second;
t.elapsed = t.timeout + (f32)(m_time - i->first);
elapsed_timers.push_back(t);
m_iterators.erase(t.position);
}
// Delete elapsed timers
m_timers.erase(m_timers.begin(), i);
if (m_timers.empty())
m_next_trigger_time = -1.;
else
m_next_trigger_time = m_timers.begin()->first;
return elapsed_timers;
}
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