/*
-Minetest-c55
-Copyright (C) 2010-2012 celeron55, Perttu Ahola <celeron55@gmail.com>
+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 General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
+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 General Public License for more details.
+GNU Lesser General Public License for more details.
-You should have received a copy of the GNU General Public License along
+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.
*/
#ifndef NODETIMER_HEADER
#define NODETIMER_HEADER
-#include "irrlichttypes.h"
+#include "irr_v3d.h"
#include <iostream>
#include <map>
+#include <vector>
/*
NodeTimer provides per-node timed callback functionality.
class NodeTimer
{
public:
- NodeTimer(): duration(0.), elapsed(0.) {}
- NodeTimer(f32 duration_, f32 elapsed_):
- duration(duration_), elapsed(elapsed_) {}
+ NodeTimer(): timeout(0.), elapsed(0.) {}
+ NodeTimer(const v3s16 &position_):
+ timeout(0.), elapsed(0.), position(position_) {}
+ NodeTimer(f32 timeout_, f32 elapsed_, v3s16 position_):
+ timeout(timeout_), elapsed(elapsed_), position(position_) {}
~NodeTimer() {}
void serialize(std::ostream &os) const;
void deSerialize(std::istream &is);
- f32 duration;
+ f32 timeout;
f32 elapsed;
+ v3s16 position;
};
/*
class NodeTimerList
{
public:
- NodeTimerList() {}
+ NodeTimerList(): m_next_trigger_time(-1.), m_time(0.) {}
~NodeTimerList() {}
- void serialize(std::ostream &os) const;
- void deSerialize(std::istream &is);
+ void serialize(std::ostream &os, u8 map_format_version) const;
+ void deSerialize(std::istream &is, u8 map_format_version);
// Get timer
- NodeTimer get(v3s16 p){
- std::map<v3s16, NodeTimer>::iterator n = m_data.find(p);
- if(n == m_data.end())
+ NodeTimer get(const v3s16 &p) {
+ std::map<v3s16, std::multimap<double, NodeTimer>::iterator>::iterator n =
+ m_iterators.find(p);
+ if (n == m_iterators.end())
return NodeTimer();
- return n->second;
+ NodeTimer t = n->second->second;
+ t.elapsed = t.timeout - (n->second->first - m_time);
+ return t;
}
// Deletes timer
- void remove(v3s16 p){
- m_data.erase(p);
+ void remove(v3s16 p) {
+ std::map<v3s16, std::multimap<double, NodeTimer>::iterator>::iterator n =
+ m_iterators.find(p);
+ if(n != m_iterators.end()) {
+ double removed_time = n->second->first;
+ m_timers.erase(n->second);
+ m_iterators.erase(n);
+ // Yes, this is float equality, but it is not a problem
+ // since we only test equality of floats as an ordered type
+ // and thus we never lose precision
+ if (removed_time == m_next_trigger_time) {
+ if (m_timers.empty())
+ m_next_trigger_time = -1.;
+ else
+ m_next_trigger_time = m_timers.begin()->first;
+ }
+ }
+ }
+ // Undefined behaviour if there already is a timer
+ void insert(NodeTimer timer) {
+ v3s16 p = timer.position;
+ double trigger_time = m_time + (double)(timer.timeout - timer.elapsed);
+ std::multimap<double, NodeTimer>::iterator it =
+ m_timers.insert(std::pair<double, NodeTimer>(
+ trigger_time, timer
+ ));
+ m_iterators.insert(
+ std::pair<v3s16, std::multimap<double, NodeTimer>::iterator>(p, it));
+ if (m_next_trigger_time == -1. || trigger_time < m_next_trigger_time)
+ m_next_trigger_time = trigger_time;
}
// Deletes old timer and sets a new one
- void set(v3s16 p, NodeTimer t){
- m_data[p] = t;
+ inline void set(const NodeTimer &timer) {
+ remove(timer.position);
+ insert(timer);
}
// Deletes all timers
- void clear(){
- m_data.clear();
+ void clear() {
+ m_timers.clear();
+ m_iterators.clear();
+ m_next_trigger_time = -1.;
+ }
+
+ inline double getNextTriggerTime() {
+ return m_next_trigger_time;
}
- // A step in time. Returns map of elapsed timers.
- std::map<v3s16, f32> step(float dtime);
+ // Move forward in time, returns elapsed timers
+ std::vector<NodeTimer> step(float dtime);
private:
- std::map<v3s16, NodeTimer> m_data;
+ std::multimap<double, NodeTimer> m_timers;
+ std::map<v3s16, std::multimap<double, NodeTimer>::iterator> m_iterators;
+ double m_next_trigger_time;
+ double m_time;
};
#endif