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-rw-r--r--src/util/container.h305
-rw-r--r--src/util/directiontables.cpp101
-rw-r--r--src/util/directiontables.h33
-rw-r--r--src/util/numeric.cpp202
-rw-r--r--src/util/numeric.h331
-rw-r--r--src/util/pointedthing.cpp125
-rw-r--r--src/util/pointedthing.h50
-rw-r--r--src/util/pointer.h298
-rw-r--r--src/util/serialize.cpp119
-rw-r--r--src/util/serialize.h456
-rw-r--r--src/util/string.cpp43
-rw-r--r--src/util/string.h264
-rw-r--r--src/util/thread.h227
-rw-r--r--src/util/timetaker.cpp61
-rw-r--r--src/util/timetaker.h51
15 files changed, 2666 insertions, 0 deletions
diff --git a/src/util/container.h b/src/util/container.h
new file mode 100644
index 000000000..bdf560979
--- /dev/null
+++ b/src/util/container.h
@@ -0,0 +1,305 @@
+/*
+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 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.
+*/
+
+#ifndef UTIL_CONTAINER_HEADER
+#define UTIL_CONTAINER_HEADER
+
+#include "../irrlichttypes.h"
+#include <jmutex.h>
+#include <jmutexautolock.h>
+#include "../porting.h" // For sleep_ms
+
+/*
+ Queue with unique values with fast checking of value existence
+*/
+
+template<typename Value>
+class UniqueQueue
+{
+public:
+
+ /*
+ Does nothing if value is already queued.
+ Return value:
+ true: value added
+ false: value already exists
+ */
+ bool push_back(Value value)
+ {
+ // Check if already exists
+ if(m_map.find(value) != NULL)
+ return false;
+
+ // Add
+ m_map.insert(value, 0);
+ m_list.push_back(value);
+
+ return true;
+ }
+
+ Value pop_front()
+ {
+ typename core::list<Value>::Iterator i = m_list.begin();
+ Value value = *i;
+ m_map.remove(value);
+ m_list.erase(i);
+ return value;
+ }
+
+ u32 size()
+ {
+ assert(m_list.size() == m_map.size());
+ return m_list.size();
+ }
+
+private:
+ core::map<Value, u8> m_map;
+ core::list<Value> m_list;
+};
+
+#if 1
+template<typename Key, typename Value>
+class MutexedMap
+{
+public:
+ MutexedMap()
+ {
+ m_mutex.Init();
+ assert(m_mutex.IsInitialized());
+ }
+
+ void set(const Key &name, const Value &value)
+ {
+ JMutexAutoLock lock(m_mutex);
+
+ m_values[name] = value;
+ }
+
+ bool get(const Key &name, Value *result)
+ {
+ JMutexAutoLock lock(m_mutex);
+
+ typename core::map<Key, Value>::Node *n;
+ n = m_values.find(name);
+
+ if(n == NULL)
+ return false;
+
+ if(result != NULL)
+ *result = n->getValue();
+
+ return true;
+ }
+
+private:
+ core::map<Key, Value> m_values;
+ JMutex m_mutex;
+};
+#endif
+
+/*
+ Generates ids for comparable values.
+ Id=0 is reserved for "no value".
+
+ Is fast at:
+ - Returning value by id (very fast)
+ - Returning id by value
+ - Generating a new id for a value
+
+ Is not able to:
+ - Remove an id/value pair (is possible to implement but slow)
+*/
+template<typename T>
+class MutexedIdGenerator
+{
+public:
+ MutexedIdGenerator()
+ {
+ m_mutex.Init();
+ assert(m_mutex.IsInitialized());
+ }
+
+ // Returns true if found
+ bool getValue(u32 id, T &value)
+ {
+ if(id == 0)
+ return false;
+ JMutexAutoLock lock(m_mutex);
+ if(m_id_to_value.size() < id)
+ return false;
+ value = m_id_to_value[id-1];
+ return true;
+ }
+
+ // If id exists for value, returns the id.
+ // Otherwise generates an id for the value.
+ u32 getId(const T &value)
+ {
+ JMutexAutoLock lock(m_mutex);
+ typename core::map<T, u32>::Node *n;
+ n = m_value_to_id.find(value);
+ if(n != NULL)
+ return n->getValue();
+ m_id_to_value.push_back(value);
+ u32 new_id = m_id_to_value.size();
+ m_value_to_id.insert(value, new_id);
+ return new_id;
+ }
+
+private:
+ JMutex m_mutex;
+ // Values are stored here at id-1 position (id 1 = [0])
+ core::array<T> m_id_to_value;
+ core::map<T, u32> m_value_to_id;
+};
+
+/*
+ FIFO queue (well, actually a FILO also)
+*/
+template<typename T>
+class Queue
+{
+public:
+ void push_back(T t)
+ {
+ m_list.push_back(t);
+ }
+
+ T pop_front()
+ {
+ if(m_list.size() == 0)
+ throw ItemNotFoundException("Queue: queue is empty");
+
+ typename core::list<T>::Iterator begin = m_list.begin();
+ T t = *begin;
+ m_list.erase(begin);
+ return t;
+ }
+ T pop_back()
+ {
+ if(m_list.size() == 0)
+ throw ItemNotFoundException("Queue: queue is empty");
+
+ typename core::list<T>::Iterator last = m_list.getLast();
+ T t = *last;
+ m_list.erase(last);
+ return t;
+ }
+
+ u32 size()
+ {
+ return m_list.size();
+ }
+
+protected:
+ core::list<T> m_list;
+};
+
+/*
+ Thread-safe FIFO queue (well, actually a FILO also)
+*/
+
+template<typename T>
+class MutexedQueue
+{
+public:
+ MutexedQueue()
+ {
+ m_mutex.Init();
+ }
+ u32 size()
+ {
+ JMutexAutoLock lock(m_mutex);
+ return m_list.size();
+ }
+ void push_back(T t)
+ {
+ JMutexAutoLock lock(m_mutex);
+ m_list.push_back(t);
+ }
+ T pop_front(u32 wait_time_max_ms=0)
+ {
+ u32 wait_time_ms = 0;
+
+ for(;;)
+ {
+ {
+ JMutexAutoLock lock(m_mutex);
+
+ if(m_list.size() > 0)
+ {
+ typename core::list<T>::Iterator begin = m_list.begin();
+ T t = *begin;
+ m_list.erase(begin);
+ return t;
+ }
+
+ if(wait_time_ms >= wait_time_max_ms)
+ throw ItemNotFoundException("MutexedQueue: queue is empty");
+ }
+
+ // Wait a while before trying again
+ sleep_ms(10);
+ wait_time_ms += 10;
+ }
+ }
+ T pop_back(u32 wait_time_max_ms=0)
+ {
+ u32 wait_time_ms = 0;
+
+ for(;;)
+ {
+ {
+ JMutexAutoLock lock(m_mutex);
+
+ if(m_list.size() > 0)
+ {
+ typename core::list<T>::Iterator last = m_list.getLast();
+ T t = *last;
+ m_list.erase(last);
+ return t;
+ }
+
+ if(wait_time_ms >= wait_time_max_ms)
+ throw ItemNotFoundException("MutexedQueue: queue is empty");
+ }
+
+ // Wait a while before trying again
+ sleep_ms(10);
+ wait_time_ms += 10;
+ }
+ }
+
+ JMutex & getMutex()
+ {
+ return m_mutex;
+ }
+
+ core::list<T> & getList()
+ {
+ return m_list;
+ }
+
+protected:
+ JMutex m_mutex;
+ core::list<T> m_list;
+};
+
+#endif
+
diff --git a/src/util/directiontables.cpp b/src/util/directiontables.cpp
new file mode 100644
index 000000000..a5d2faa7c
--- /dev/null
+++ b/src/util/directiontables.cpp
@@ -0,0 +1,101 @@
+/*
+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 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 "directiontables.h"
+
+const v3s16 g_6dirs[6] =
+{
+ // +right, +top, +back
+ v3s16( 0, 0, 1), // back
+ v3s16( 0, 1, 0), // top
+ v3s16( 1, 0, 0), // right
+ v3s16( 0, 0,-1), // front
+ v3s16( 0,-1, 0), // bottom
+ v3s16(-1, 0, 0) // left
+};
+
+const v3s16 g_26dirs[26] =
+{
+ // +right, +top, +back
+ v3s16( 0, 0, 1), // back
+ v3s16( 0, 1, 0), // top
+ v3s16( 1, 0, 0), // right
+ v3s16( 0, 0,-1), // front
+ v3s16( 0,-1, 0), // bottom
+ v3s16(-1, 0, 0), // left
+ // 6
+ v3s16(-1, 1, 0), // top left
+ v3s16( 1, 1, 0), // top right
+ v3s16( 0, 1, 1), // top back
+ v3s16( 0, 1,-1), // top front
+ v3s16(-1, 0, 1), // back left
+ v3s16( 1, 0, 1), // back right
+ v3s16(-1, 0,-1), // front left
+ v3s16( 1, 0,-1), // front right
+ v3s16(-1,-1, 0), // bottom left
+ v3s16( 1,-1, 0), // bottom right
+ v3s16( 0,-1, 1), // bottom back
+ v3s16( 0,-1,-1), // bottom front
+ // 18
+ v3s16(-1, 1, 1), // top back-left
+ v3s16( 1, 1, 1), // top back-right
+ v3s16(-1, 1,-1), // top front-left
+ v3s16( 1, 1,-1), // top front-right
+ v3s16(-1,-1, 1), // bottom back-left
+ v3s16( 1,-1, 1), // bottom back-right
+ v3s16(-1,-1,-1), // bottom front-left
+ v3s16( 1,-1,-1), // bottom front-right
+ // 26
+};
+
+const v3s16 g_27dirs[27] =
+{
+ // +right, +top, +back
+ v3s16( 0, 0, 1), // back
+ v3s16( 0, 1, 0), // top
+ v3s16( 1, 0, 0), // right
+ v3s16( 0, 0,-1), // front
+ v3s16( 0,-1, 0), // bottom
+ v3s16(-1, 0, 0), // left
+ // 6
+ v3s16(-1, 1, 0), // top left
+ v3s16( 1, 1, 0), // top right
+ v3s16( 0, 1, 1), // top back
+ v3s16( 0, 1,-1), // top front
+ v3s16(-1, 0, 1), // back left
+ v3s16( 1, 0, 1), // back right
+ v3s16(-1, 0,-1), // front left
+ v3s16( 1, 0,-1), // front right
+ v3s16(-1,-1, 0), // bottom left
+ v3s16( 1,-1, 0), // bottom right
+ v3s16( 0,-1, 1), // bottom back
+ v3s16( 0,-1,-1), // bottom front
+ // 18
+ v3s16(-1, 1, 1), // top back-left
+ v3s16( 1, 1, 1), // top back-right
+ v3s16(-1, 1,-1), // top front-left
+ v3s16( 1, 1,-1), // top front-right
+ v3s16(-1,-1, 1), // bottom back-left
+ v3s16( 1,-1, 1), // bottom back-right
+ v3s16(-1,-1,-1), // bottom front-left
+ v3s16( 1,-1,-1), // bottom front-right
+ // 26
+ v3s16(0,0,0),
+};
+
diff --git a/src/util/directiontables.h b/src/util/directiontables.h
new file mode 100644
index 000000000..c02b3d124
--- /dev/null
+++ b/src/util/directiontables.h
@@ -0,0 +1,33 @@
+/*
+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 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.
+*/
+
+#ifndef UTIL_DIRECTIONTABLES_HEADER
+#define UTIL_DIRECTIONTABLES_HEADER
+
+#include "../irrlichttypes.h"
+
+extern const v3s16 g_6dirs[6];
+
+extern const v3s16 g_26dirs[26];
+
+// 26th is (0,0,0)
+extern const v3s16 g_27dirs[27];
+
+#endif
+
diff --git a/src/util/numeric.cpp b/src/util/numeric.cpp
new file mode 100644
index 000000000..d082cdb76
--- /dev/null
+++ b/src/util/numeric.cpp
@@ -0,0 +1,202 @@
+/*
+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 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 "numeric.h"
+
+#include "log.h"
+#include "constants.h" // BS, MAP_BLOCKSIZE
+#include <iostream>
+
+// Calculate the borders of a "d-radius" cube
+void getFacePositions(core::list<v3s16> &list, u16 d)
+{
+ if(d == 0)
+ {
+ list.push_back(v3s16(0,0,0));
+ return;
+ }
+ if(d == 1)
+ {
+ /*
+ This is an optimized sequence of coordinates.
+ */
+ list.push_back(v3s16( 0, 1, 0)); // top
+ list.push_back(v3s16( 0, 0, 1)); // back
+ list.push_back(v3s16(-1, 0, 0)); // left
+ list.push_back(v3s16( 1, 0, 0)); // right
+ list.push_back(v3s16( 0, 0,-1)); // front
+ list.push_back(v3s16( 0,-1, 0)); // bottom
+ // 6
+ list.push_back(v3s16(-1, 0, 1)); // back left
+ list.push_back(v3s16( 1, 0, 1)); // back right
+ list.push_back(v3s16(-1, 0,-1)); // front left
+ list.push_back(v3s16( 1, 0,-1)); // front right
+ list.push_back(v3s16(-1,-1, 0)); // bottom left
+ list.push_back(v3s16( 1,-1, 0)); // bottom right
+ list.push_back(v3s16( 0,-1, 1)); // bottom back
+ list.push_back(v3s16( 0,-1,-1)); // bottom front
+ list.push_back(v3s16(-1, 1, 0)); // top left
+ list.push_back(v3s16( 1, 1, 0)); // top right
+ list.push_back(v3s16( 0, 1, 1)); // top back
+ list.push_back(v3s16( 0, 1,-1)); // top front
+ // 18
+ list.push_back(v3s16(-1, 1, 1)); // top back-left
+ list.push_back(v3s16( 1, 1, 1)); // top back-right
+ list.push_back(v3s16(-1, 1,-1)); // top front-left
+ list.push_back(v3s16( 1, 1,-1)); // top front-right
+ list.push_back(v3s16(-1,-1, 1)); // bottom back-left
+ list.push_back(v3s16( 1,-1, 1)); // bottom back-right
+ list.push_back(v3s16(-1,-1,-1)); // bottom front-left
+ list.push_back(v3s16( 1,-1,-1)); // bottom front-right
+ // 26
+ return;
+ }
+
+ // Take blocks in all sides, starting from y=0 and going +-y
+ for(s16 y=0; y<=d-1; y++)
+ {
+ // Left and right side, including borders
+ for(s16 z=-d; z<=d; z++)
+ {
+ list.push_back(v3s16(d,y,z));
+ list.push_back(v3s16(-d,y,z));
+ if(y != 0)
+ {
+ list.push_back(v3s16(d,-y,z));
+ list.push_back(v3s16(-d,-y,z));
+ }
+ }
+ // Back and front side, excluding borders
+ for(s16 x=-d+1; x<=d-1; x++)
+ {
+ list.push_back(v3s16(x,y,d));
+ list.push_back(v3s16(x,y,-d));
+ if(y != 0)
+ {
+ list.push_back(v3s16(x,-y,d));
+ list.push_back(v3s16(x,-y,-d));
+ }
+ }
+ }
+
+ // Take the bottom and top face with borders
+ // -d<x<d, y=+-d, -d<z<d
+ for(s16 x=-d; x<=d; x++)
+ for(s16 z=-d; z<=d; z++)
+ {
+ list.push_back(v3s16(x,-d,z));
+ list.push_back(v3s16(x,d,z));
+ }
+}
+
+/*
+ myrand
+*/
+
+static unsigned long next = 1;
+
+/* RAND_MAX assumed to be 32767 */
+int myrand(void)
+{
+ next = next * 1103515245 + 12345;
+ return((unsigned)(next/65536) % 32768);
+}
+
+void mysrand(unsigned seed)
+{
+ next = seed;
+}
+
+int myrand_range(int min, int max)
+{
+ if(max-min > MYRAND_MAX)
+ {
+ errorstream<<"WARNING: myrand_range: max-min > MYRAND_MAX"<<std::endl;
+ max = min + MYRAND_MAX;
+ }
+ if(min > max)
+ {
+ errorstream<<"WARNING: myrand_range: min > max"<<std::endl;
+ return max;
+ }
+ return (myrand()%(max-min+1))+min;
+}
+
+/*
+ blockpos: position of block in block coordinates
+ camera_pos: position of camera in nodes
+ camera_dir: an unit vector pointing to camera direction
+ range: viewing range
+*/
+bool isBlockInSight(v3s16 blockpos_b, v3f camera_pos, v3f camera_dir,
+ f32 camera_fov, f32 range, f32 *distance_ptr)
+{
+ v3s16 blockpos_nodes = blockpos_b * MAP_BLOCKSIZE;
+
+ // Block center position
+ v3f blockpos(
+ ((float)blockpos_nodes.X + MAP_BLOCKSIZE/2) * BS,
+ ((float)blockpos_nodes.Y + MAP_BLOCKSIZE/2) * BS,
+ ((float)blockpos_nodes.Z + MAP_BLOCKSIZE/2) * BS
+ );
+
+ // Block position relative to camera
+ v3f blockpos_relative = blockpos - camera_pos;
+
+ // Distance in camera direction (+=front, -=back)
+ f32 dforward = blockpos_relative.dotProduct(camera_dir);
+
+ // Total distance
+ f32 d = blockpos_relative.getLength();
+
+ if(distance_ptr)
+ *distance_ptr = d;
+
+ // If block is very close, it is always in sight
+ if(d < 1.44*1.44*MAP_BLOCKSIZE*BS/2)
+ return true;
+
+ // If block is far away, it's not in sight
+ if(d > range)
+ return false;
+
+ // Maximum radius of a block
+ f32 block_max_radius = 0.5*1.44*1.44*MAP_BLOCKSIZE*BS;
+
+ // If block is (nearly) touching the camera, don't
+ // bother validating further (that is, render it anyway)
+ if(d < block_max_radius)
+ return true;
+
+ // Cosine of the angle between the camera direction
+ // and the block direction (camera_dir is an unit vector)
+ f32 cosangle = dforward / d;
+
+ // Compensate for the size of the block
+ // (as the block has to be shown even if it's a bit off FOV)
+ // This is an estimate, plus an arbitary factor
+ cosangle += block_max_radius / d * 0.5;
+
+ // If block is not in the field of view, skip it
+ if(cosangle < cos(camera_fov / 2))
+ return false;
+
+ return true;
+}
+
diff --git a/src/util/numeric.h b/src/util/numeric.h
new file mode 100644
index 000000000..0ce21b7e3
--- /dev/null
+++ b/src/util/numeric.h
@@ -0,0 +1,331 @@
+/*
+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 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.
+*/
+
+#ifndef UTIL_NUMERIC_HEADER
+#define UTIL_NUMERIC_HEADER
+
+#include "../irrlichttypes.h"
+
+// Calculate the borders of a "d-radius" cube
+void getFacePositions(core::list<v3s16> &list, u16 d);
+
+class IndentationRaiser
+{
+public:
+ IndentationRaiser(u16 *indentation)
+ {
+ m_indentation = indentation;
+ (*m_indentation)++;
+ }
+ ~IndentationRaiser()
+ {
+ (*m_indentation)--;
+ }
+private:
+ u16 *m_indentation;
+};
+
+inline s16 getContainerPos(s16 p, s16 d)
+{
+ return (p>=0 ? p : p-d+1) / d;
+}
+
+inline v2s16 getContainerPos(v2s16 p, s16 d)
+{
+ return v2s16(
+ getContainerPos(p.X, d),
+ getContainerPos(p.Y, d)
+ );
+}
+
+inline v3s16 getContainerPos(v3s16 p, s16 d)
+{
+ return v3s16(
+ getContainerPos(p.X, d),
+ getContainerPos(p.Y, d),
+ getContainerPos(p.Z, d)
+ );
+}
+
+inline v2s16 getContainerPos(v2s16 p, v2s16 d)
+{
+ return v2s16(
+ getContainerPos(p.X, d.X),
+ getContainerPos(p.Y, d.Y)
+ );
+}
+
+inline v3s16 getContainerPos(v3s16 p, v3s16 d)
+{
+ return v3s16(
+ getContainerPos(p.X, d.X),
+ getContainerPos(p.Y, d.Y),
+ getContainerPos(p.Z, d.Z)
+ );
+}
+
+inline bool isInArea(v3s16 p, s16 d)
+{
+ return (
+ p.X >= 0 && p.X < d &&
+ p.Y >= 0 && p.Y < d &&
+ p.Z >= 0 && p.Z < d
+ );
+}
+
+inline bool isInArea(v2s16 p, s16 d)
+{
+ return (
+ p.X >= 0 && p.X < d &&
+ p.Y >= 0 && p.Y < d
+ );
+}
+
+inline bool isInArea(v3s16 p, v3s16 d)
+{
+ return (
+ p.X >= 0 && p.X < d.X &&
+ p.Y >= 0 && p.Y < d.Y &&
+ p.Z >= 0 && p.Z < d.Z
+ );
+}
+
+inline s16 rangelim(s16 i, s16 max)
+{
+ if(i < 0)
+ return 0;
+ if(i > max)
+ return max;
+ return i;
+}
+
+#define rangelim(d, min, max) ((d) < (min) ? (min) : ((d)>(max)?(max):(d)))
+
+inline v3s16 arealim(v3s16 p, s16 d)
+{
+ if(p.X < 0)
+ p.X = 0;
+ if(p.Y < 0)
+ p.Y = 0;
+ if(p.Z < 0)
+ p.Z = 0;
+ if(p.X > d-1)
+ p.X = d-1;
+ if(p.Y > d-1)
+ p.Y = d-1;
+ if(p.Z > d-1)
+ p.Z = d-1;
+ return p;
+}
+
+
+/*
+ See test.cpp for example cases.
+ wraps degrees to the range of -360...360
+ NOTE: Wrapping to 0...360 is not used because pitch needs negative values.
+*/
+inline float wrapDegrees(float f)
+{
+ // Take examples of f=10, f=720.5, f=-0.5, f=-360.5
+ // This results in
+ // 10, 720, -1, -361
+ int i = floor(f);
+ // 0, 2, 0, -1
+ int l = i / 360;
+ // NOTE: This would be used for wrapping to 0...360
+ // 0, 2, -1, -2
+ /*if(i < 0)
+ l -= 1;*/
+ // 0, 720, 0, -360
+ int k = l * 360;
+ // 10, 0.5, -0.5, -0.5
+ f -= float(k);
+ return f;
+}
+
+/* Wrap to 0...360 */
+inline float wrapDegrees_0_360(float f)
+{
+ // Take examples of f=10, f=720.5, f=-0.5, f=-360.5
+ // This results in
+ // 10, 720, -1, -361
+ int i = floor(f);
+ // 0, 2, 0, -1
+ int l = i / 360;
+ // Wrap to 0...360
+ // 0, 2, -1, -2
+ if(i < 0)
+ l -= 1;
+ // 0, 720, 0, -360
+ int k = l * 360;
+ // 10, 0.5, -0.5, -0.5
+ f -= float(k);
+ return f;
+}
+
+/* Wrap to -180...180 */
+inline float wrapDegrees_180(float f)
+{
+ f += 180;
+ f = wrapDegrees_0_360(f);
+ f -= 180;
+ return f;
+}
+
+/*
+ Pseudo-random (VC++ rand() sucks)
+*/
+int myrand(void);
+void mysrand(unsigned seed);
+#define MYRAND_MAX 32767
+
+int myrand_range(int min, int max);
+
+/*
+ Miscellaneous functions
+*/
+
+bool isBlockInSight(v3s16 blockpos_b, v3f camera_pos, v3f camera_dir,
+ f32 camera_fov, f32 range, f32 *distance_ptr=NULL);
+
+/*
+ Some helper stuff
+*/
+#define MYMIN(a,b) ((a)<(b)?(a):(b))
+#define MYMAX(a,b) ((a)>(b)?(a):(b))
+
+/*
+ Returns nearest 32-bit integer for given floating point number.
+ <cmath> and <math.h> in VC++ don't provide round().
+*/
+inline s32 myround(f32 f)
+{
+ return floor(f + 0.5);
+}
+
+/*
+ Returns integer position of node in given floating point position
+*/
+inline v3s16 floatToInt(v3f p, f32 d)
+{
+ v3s16 p2(
+ (p.X + (p.X>0 ? d/2 : -d/2))/d,
+ (p.Y + (p.Y>0 ? d/2 : -d/2))/d,
+ (p.Z + (p.Z>0 ? d/2 : -d/2))/d);
+ return p2;
+}
+
+/*
+ Returns floating point position of node in given integer position
+*/
+inline v3f intToFloat(v3s16 p, f32 d)
+{
+ v3f p2(
+ (f32)p.X * d,
+ (f32)p.Y * d,
+ (f32)p.Z * d
+ );
+ return p2;
+}
+
+// Random helper. Usually d=BS
+inline core::aabbox3d<f32> getNodeBox(v3s16 p, float d)
+{
+ return core::aabbox3d<f32>(
+ (float)p.X * d - 0.5*d,
+ (float)p.Y * d - 0.5*d,
+ (float)p.Z * d - 0.5*d,
+ (float)p.X * d + 0.5*d,
+ (float)p.Y * d + 0.5*d,
+ (float)p.Z * d + 0.5*d
+ );
+}
+
+class IntervalLimiter
+{
+public:
+ IntervalLimiter():
+ m_accumulator(0)
+ {
+ }
+ /*
+ dtime: time from last call to this method
+ wanted_interval: interval wanted
+ return value:
+ true: action should be skipped
+ false: action should be done
+ */
+ bool step(float dtime, float wanted_interval)
+ {
+ m_accumulator += dtime;
+ if(m_accumulator < wanted_interval)
+ return false;
+ m_accumulator -= wanted_interval;
+ return true;
+ }
+protected:
+ float m_accumulator;
+};
+
+/*
+ Splits a list into "pages". For example, the list [1,2,3,4,5] split
+ into two pages would be [1,2,3],[4,5]. This function computes the
+ minimum and maximum indices of a single page.
+
+ length: Length of the list that should be split
+ page: Page number, 1 <= page <= pagecount
+ pagecount: The number of pages, >= 1
+ minindex: Receives the minimum index (inclusive).
+ maxindex: Receives the maximum index (exclusive).
+
+ Ensures 0 <= minindex <= maxindex <= length.
+*/
+inline void paging(u32 length, u32 page, u32 pagecount, u32 &minindex, u32 &maxindex)
+{
+ if(length < 1 || pagecount < 1 || page < 1 || page > pagecount)
+ {
+ // Special cases or invalid parameters
+ minindex = maxindex = 0;
+ }
+ else if(pagecount <= length)
+ {
+ // Less pages than entries in the list:
+ // Each page contains at least one entry
+ minindex = (length * (page-1) + (pagecount-1)) / pagecount;
+ maxindex = (length * page + (pagecount-1)) / pagecount;
+ }
+ else
+ {
+ // More pages than entries in the list:
+ // Make sure the empty pages are at the end
+ if(page < length)
+ {
+ minindex = page-1;
+ maxindex = page;
+ }
+ else
+ {
+ minindex = 0;
+ maxindex = 0;
+ }
+ }
+}
+
+#endif
+
diff --git a/src/util/pointedthing.cpp b/src/util/pointedthing.cpp
new file mode 100644
index 000000000..d1be2d6b6
--- /dev/null
+++ b/src/util/pointedthing.cpp
@@ -0,0 +1,125 @@
+/*
+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 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 "pointedthing.h"
+
+#include "serialize.h"
+#include <sstream>
+
+PointedThing::PointedThing():
+ type(POINTEDTHING_NOTHING),
+ node_undersurface(0,0,0),
+ node_abovesurface(0,0,0),
+ object_id(-1)
+{}
+
+std::string PointedThing::dump() const
+{
+ std::ostringstream os(std::ios::binary);
+ if(type == POINTEDTHING_NOTHING)
+ {
+ os<<"[nothing]";
+ }
+ else if(type == POINTEDTHING_NODE)
+ {
+ const v3s16 &u = node_undersurface;
+ const v3s16 &a = node_abovesurface;
+ os<<"[node under="<<u.X<<","<<u.Y<<","<<u.Z
+ << " above="<<a.X<<","<<a.Y<<","<<a.Z<<"]";
+ }
+ else if(type == POINTEDTHING_OBJECT)
+ {
+ os<<"[object "<<object_id<<"]";
+ }
+ else
+ {
+ os<<"[unknown PointedThing]";
+ }
+ return os.str();
+}
+
+void PointedThing::serialize(std::ostream &os) const
+{
+ writeU8(os, 0); // version
+ writeU8(os, (u8)type);
+ if(type == POINTEDTHING_NOTHING)
+ {
+ // nothing
+ }
+ else if(type == POINTEDTHING_NODE)
+ {
+ writeV3S16(os, node_undersurface);
+ writeV3S16(os, node_abovesurface);
+ }
+ else if(type == POINTEDTHING_OBJECT)
+ {
+ writeS16(os, object_id);
+ }
+}
+
+void PointedThing::deSerialize(std::istream &is)
+{
+ int version = readU8(is);
+ if(version != 0) throw SerializationError(
+ "unsupported PointedThing version");
+ type = (PointedThingType) readU8(is);
+ if(type == POINTEDTHING_NOTHING)
+ {
+ // nothing
+ }
+ else if(type == POINTEDTHING_NODE)
+ {
+ node_undersurface = readV3S16(is);
+ node_abovesurface = readV3S16(is);
+ }
+ else if(type == POINTEDTHING_OBJECT)
+ {
+ object_id = readS16(is);
+ }
+ else
+ {
+ throw SerializationError(
+ "unsupported PointedThingType");
+ }
+}
+
+bool PointedThing::operator==(const PointedThing &pt2) const
+{
+ if(type != pt2.type)
+ return false;
+ if(type == POINTEDTHING_NODE)
+ {
+ if(node_undersurface != pt2.node_undersurface)
+ return false;
+ if(node_abovesurface != pt2.node_abovesurface)
+ return false;
+ }
+ else if(type == POINTEDTHING_OBJECT)
+ {
+ if(object_id != pt2.object_id)
+ return false;
+ }
+ return true;
+}
+
+bool PointedThing::operator!=(const PointedThing &pt2) const
+{
+ return !(*this == pt2);
+}
+
diff --git a/src/util/pointedthing.h b/src/util/pointedthing.h
new file mode 100644
index 000000000..82d66dfa8
--- /dev/null
+++ b/src/util/pointedthing.h
@@ -0,0 +1,50 @@
+/*
+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 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.
+*/
+
+#ifndef UTIL_POINTEDTHING_HEADER
+#define UTIL_POINTEDTHING_HEADER
+
+#include "../irrlichttypes.h"
+#include <iostream>
+#include <string>
+
+enum PointedThingType
+{
+ POINTEDTHING_NOTHING,
+ POINTEDTHING_NODE,
+ POINTEDTHING_OBJECT
+};
+
+struct PointedThing
+{
+ PointedThingType type;
+ v3s16 node_undersurface;
+ v3s16 node_abovesurface;
+ s16 object_id;
+
+ PointedThing();
+ std::string dump() const;
+ void serialize(std::ostream &os) const;
+ void deSerialize(std::istream &is);
+ bool operator==(const PointedThing &pt2) const;
+ bool operator!=(const PointedThing &pt2) const;
+};
+
+#endif
+
diff --git a/src/util/pointer.h b/src/util/pointer.h
new file mode 100644
index 000000000..02f11c2ea
--- /dev/null
+++ b/src/util/pointer.h
@@ -0,0 +1,298 @@
+/*
+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 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.
+*/
+
+#ifndef UTIL_POINTER_HEADER
+#define UTIL_POINTER_HEADER
+
+#include "../irrlichttypes.h"
+#include "../debug.h" // For assert()
+
+template <typename T>
+class SharedPtr
+{
+public:
+ SharedPtr(T *t=NULL)
+ {
+ refcount = new int;
+ *refcount = 1;
+ ptr = t;
+ }
+ SharedPtr(SharedPtr<T> &t)
+ {
+ //*this = t;
+ drop();
+ refcount = t.refcount;
+ (*refcount)++;
+ ptr = t.ptr;
+ }
+ ~SharedPtr()
+ {
+ drop();
+ }
+ SharedPtr<T> & operator=(T *t)
+ {
+ drop();
+ refcount = new int;
+ *refcount = 1;
+ ptr = t;
+ return *this;
+ }
+ SharedPtr<T> & operator=(SharedPtr<T> &t)
+ {
+ drop();
+ refcount = t.refcount;
+ (*refcount)++;
+ ptr = t.ptr;
+ return *this;
+ }
+ T* operator->()
+ {
+ return ptr;
+ }
+ T & operator*()
+ {
+ return *ptr;
+ }
+ bool operator!=(T *t)
+ {
+ return ptr != t;
+ }
+ bool operator==(T *t)
+ {
+ return ptr == t;
+ }
+ T & operator[](unsigned int i)
+ {
+ return ptr[i];
+ }
+private:
+ void drop()
+ {
+ assert((*refcount) > 0);
+ (*refcount)--;
+ if(*refcount == 0)
+ {
+ delete refcount;
+ if(ptr != NULL)
+ delete ptr;
+ }
+ }
+ T *ptr;
+ int *refcount;
+};
+
+template <typename T>
+class Buffer
+{
+public:
+ Buffer()
+ {
+ m_size = 0;
+ data = NULL;
+ }
+ Buffer(unsigned int size)
+ {
+ m_size = size;
+ if(size != 0)
+ data = new T[size];
+ else
+ data = NULL;
+ }
+ Buffer(const Buffer &buffer)
+ {
+ m_size = buffer.m_size;
+ if(m_size != 0)
+ {
+ data = new T[buffer.m_size];
+ memcpy(data, buffer.data, buffer.m_size);
+ }
+ else
+ data = NULL;
+ }
+ Buffer(const T *t, unsigned int size)
+ {
+ m_size = size;
+ if(size != 0)
+ {
+ data = new T[size];
+ memcpy(data, t, size);
+ }
+ else
+ data = NULL;
+ }
+ ~Buffer()
+ {
+ drop();
+ }
+ Buffer& operator=(const Buffer &buffer)
+ {
+ if(this == &buffer)
+ return *this;
+ drop();
+ m_size = buffer.m_size;
+ if(m_size != 0)
+ {
+ data = new T[buffer.m_size];
+ memcpy(data, buffer.data, buffer.m_size);
+ }
+ else
+ data = NULL;
+ return *this;
+ }
+ T & operator[](unsigned int i) const
+ {
+ return data[i];
+ }
+ T * operator*() const
+ {
+ return data;
+ }
+ unsigned int getSize() const
+ {
+ return m_size;
+ }
+private:
+ void drop()
+ {
+ if(data)
+ delete[] data;
+ }
+ T *data;
+ unsigned int m_size;
+};
+
+template <typename T>
+class SharedBuffer
+{
+public:
+ SharedBuffer()
+ {
+ m_size = 0;
+ data = NULL;
+ refcount = new unsigned int;
+ (*refcount) = 1;
+ }
+ SharedBuffer(unsigned int size)
+ {
+ m_size = size;
+ if(m_size != 0)
+ data = new T[m_size];
+ else
+ data = NULL;
+ refcount = new unsigned int;
+ (*refcount) = 1;
+ }
+ SharedBuffer(const SharedBuffer &buffer)
+ {
+ //std::cout<<"SharedBuffer(const SharedBuffer &buffer)"<<std::endl;
+ m_size = buffer.m_size;
+ data = buffer.data;
+ refcount = buffer.refcount;
+ (*refcount)++;
+ }
+ SharedBuffer & operator=(const SharedBuffer & buffer)
+ {
+ //std::cout<<"SharedBuffer & operator=(const SharedBuffer & buffer)"<<std::endl;
+ if(this == &buffer)
+ return *this;
+ drop();
+ m_size = buffer.m_size;
+ data = buffer.data;
+ refcount = buffer.refcount;
+ (*refcount)++;
+ return *this;
+ }
+ /*
+ Copies whole buffer
+ */
+ SharedBuffer(T *t, unsigned int size)
+ {
+ m_size = size;
+ if(m_size != 0)
+ {
+ data = new T[m_size];
+ memcpy(data, t, m_size);
+ }
+ else
+ data = NULL;
+ refcount = new unsigned int;
+ (*refcount) = 1;
+ }
+ /*
+ Copies whole buffer
+ */
+ SharedBuffer(const Buffer<T> &buffer)
+ {
+ m_size = buffer.getSize();
+ if(m_size != 0)
+ {
+ data = new T[m_size];
+ memcpy(data, *buffer, buffer.getSize());
+ }
+ else
+ data = NULL;
+ refcount = new unsigned int;
+ (*refcount) = 1;
+ }
+ ~SharedBuffer()
+ {
+ drop();
+ }
+ T & operator[](unsigned int i) const
+ {
+ //assert(i < m_size)
+ return data[i];
+ }
+ T * operator*() const
+ {
+ return data;
+ }
+ unsigned int getSize() const
+ {
+ return m_size;
+ }
+ operator Buffer<T>() const
+ {
+ return Buffer<T>(data, m_size);
+ }
+private:
+ void drop()
+ {
+ assert((*refcount) > 0);
+ (*refcount)--;
+ if(*refcount == 0)
+ {
+ if(data)
+ delete[] data;
+ delete refcount;
+ }
+ }
+ T *data;
+ unsigned int m_size;
+ unsigned int *refcount;
+};
+
+inline SharedBuffer<u8> SharedBufferFromString(const char *string)
+{
+ SharedBuffer<u8> b((u8*)string, strlen(string)+1);
+ return b;
+}
+
+#endif
+
diff --git a/src/util/serialize.cpp b/src/util/serialize.cpp
new file mode 100644
index 000000000..16825b677
--- /dev/null
+++ b/src/util/serialize.cpp
@@ -0,0 +1,119 @@
+/*
+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 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 "serialize.h"
+
+#include <sstream>
+#include <iomanip>
+
+// Creates a string encoded in JSON format (almost equivalent to a C string literal)
+std::string serializeJsonString(const std::string &plain)
+{
+ std::ostringstream os(std::ios::binary);
+ os<<"\"";
+ for(size_t i = 0; i < plain.size(); i++)
+ {
+ char c = plain[i];
+ switch(c)
+ {
+ case '"': os<<"\\\""; break;
+ case '\\': os<<"\\\\"; break;
+ case '/': os<<"\\/"; break;
+ case '\b': os<<"\\b"; break;
+ case '\f': os<<"\\f"; break;
+ case '\n': os<<"\\n"; break;
+ case '\r': os<<"\\r"; break;
+ case '\t': os<<"\\t"; break;
+ default:
+ {
+ if(c >= 32 && c <= 126)
+ {
+ os<<c;
+ }
+ else
+ {
+ u32 cnum = (u32) (u8) c;
+ os<<"\\u"<<std::hex<<std::setw(4)<<std::setfill('0')<<cnum;
+ }
+ break;
+ }
+ }
+ }
+ os<<"\"";
+ return os.str();
+}
+
+// Reads a string encoded in JSON format
+std::string deSerializeJsonString(std::istream &is)
+{
+ std::ostringstream os(std::ios::binary);
+ char c, c2;
+
+ // Parse initial doublequote
+ is >> c;
+ if(c != '"')
+ throw SerializationError("JSON string must start with doublequote");
+
+ // Parse characters
+ for(;;)
+ {
+ c = is.get();
+ if(is.eof())
+ throw SerializationError("JSON string ended prematurely");
+ if(c == '"')
+ {
+ return os.str();
+ }
+ else if(c == '\\')
+ {
+ c2 = is.get();
+ if(is.eof())
+ throw SerializationError("JSON string ended prematurely");
+ switch(c2)
+ {
+ default: os<<c2; break;
+ case 'b': os<<'\b'; break;
+ case 'f': os<<'\f'; break;
+ case 'n': os<<'\n'; break;
+ case 'r': os<<'\r'; break;
+ case 't': os<<'\t'; break;
+ case 'u':
+ {
+ char hexdigits[4+1];
+ is.read(hexdigits, 4);
+ if(is.eof())
+ throw SerializationError("JSON string ended prematurely");
+ hexdigits[4] = 0;
+ std::istringstream tmp_is(hexdigits, std::ios::binary);
+ int hexnumber;
+ tmp_is >> std::hex >> hexnumber;
+ os<<((char)hexnumber);
+ break;
+ }
+ }
+ }
+ else
+ {
+ os<<c;
+ }
+ }
+ return os.str();
+}
+
+
diff --git a/src/util/serialize.h b/src/util/serialize.h
new file mode 100644
index 000000000..e229a00be
--- /dev/null
+++ b/src/util/serialize.h
@@ -0,0 +1,456 @@
+/*
+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 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.
+*/
+
+#ifndef UTIL_SERIALIZE_HEADER
+#define UTIL_SERIALIZE_HEADER
+
+#include "../irrlichttypes.h"
+#include <iostream>
+#include <string>
+#include "../exceptions.h"
+#include "pointer.h"
+
+inline void writeU64(u8 *data, u64 i)
+{
+ data[0] = ((i>>56)&0xff);
+ data[1] = ((i>>48)&0xff);
+ data[2] = ((i>>40)&0xff);
+ data[3] = ((i>>32)&0xff);
+ data[4] = ((i>>24)&0xff);
+ data[5] = ((i>>16)&0xff);
+ data[6] = ((i>> 8)&0xff);
+ data[7] = ((i>> 0)&0xff);
+}
+
+inline void writeU32(u8 *data, u32 i)
+{
+ data[0] = ((i>>24)&0xff);
+ data[1] = ((i>>16)&0xff);
+ data[2] = ((i>> 8)&0xff);
+ data[3] = ((i>> 0)&0xff);
+}
+
+inline void writeU16(u8 *data, u16 i)
+{
+ data[0] = ((i>> 8)&0xff);
+ data[1] = ((i>> 0)&0xff);
+}
+
+inline void writeU8(u8 *data, u8 i)
+{
+ data[0] = ((i>> 0)&0xff);
+}
+
+inline u64 readU64(u8 *data)
+{
+ return ((u64)data[0]<<56) | ((u64)data[1]<<48)
+ | ((u64)data[2]<<40) | ((u64)data[3]<<32)
+ | ((u64)data[4]<<24) | ((u64)data[5]<<16)
+ | ((u64)data[6]<<8) | ((u64)data[7]<<0);
+}
+
+inline u32 readU32(u8 *data)
+{
+ return (data[0]<<24) | (data[1]<<16) | (data[2]<<8) | (data[3]<<0);
+}
+
+inline u16 readU16(u8 *data)
+{
+ return (data[0]<<8) | (data[1]<<0);
+}
+
+inline u8 readU8(u8 *data)
+{
+ return (data[0]<<0);
+}
+
+inline void writeS32(u8 *data, s32 i){
+ writeU32(data, (u32)i);
+}
+inline s32 readS32(u8 *data){
+ return (s32)readU32(data);
+}
+
+inline void writeS16(u8 *data, s16 i){
+ writeU16(data, (u16)i);
+}
+inline s16 readS16(u8 *data){
+ return (s16)readU16(data);
+}
+
+inline void writeS8(u8 *data, s8 i){
+ writeU8(data, (u8)i);
+}
+inline s8 readS8(u8 *data){
+ return (s8)readU8(data);
+}
+
+inline void writeF1000(u8 *data, f32 i){
+ writeS32(data, i*1000);
+}
+inline f32 readF1000(u8 *data){
+ return (f32)readS32(data)/1000.;
+}
+
+inline void writeV3S32(u8 *data, v3s32 p)
+{
+ writeS32(&data[0], p.X);
+ writeS32(&data[4], p.Y);
+ writeS32(&data[8], p.Z);
+}
+inline v3s32 readV3S32(u8 *data)
+{
+ v3s32 p;
+ p.X = readS32(&data[0]);
+ p.Y = readS32(&data[4]);
+ p.Z = readS32(&data[8]);
+ return p;
+}
+
+inline void writeV3F1000(u8 *data, v3f p)
+{
+ writeF1000(&data[0], p.X);
+ writeF1000(&data[4], p.Y);
+ writeF1000(&data[8], p.Z);
+}
+inline v3f readV3F1000(u8 *data)
+{
+ v3f p;
+ p.X = (float)readF1000(&data[0]);
+ p.Y = (float)readF1000(&data[4]);
+ p.Z = (float)readF1000(&data[8]);
+ return p;
+}
+
+inline void writeV2F1000(u8 *data, v2f p)
+{
+ writeF1000(&data[0], p.X);
+ writeF1000(&data[4], p.Y);
+}
+inline v2f readV2F1000(u8 *data)
+{
+ v2f p;
+ p.X = (float)readF1000(&data[0]);
+ p.Y = (float)readF1000(&data[4]);
+ return p;
+}
+
+inline void writeV2S16(u8 *data, v2s16 p)
+{
+ writeS16(&data[0], p.X);
+ writeS16(&data[2], p.Y);
+}
+
+inline v2s16 readV2S16(u8 *data)
+{
+ v2s16 p;
+ p.X = readS16(&data[0]);
+ p.Y = readS16(&data[2]);
+ return p;
+}
+
+inline void writeV2S32(u8 *data, v2s32 p)
+{
+ writeS32(&data[0], p.X);
+ writeS32(&data[2], p.Y);
+}
+
+inline v2s32 readV2S32(u8 *data)
+{
+ v2s32 p;
+ p.X = readS32(&data[0]);
+ p.Y = readS32(&data[2]);
+ return p;
+}
+
+inline void writeV3S16(u8 *data, v3s16 p)
+{
+ writeS16(&data[0], p.X);
+ writeS16(&data[2], p.Y);
+ writeS16(&data[4], p.Z);
+}
+
+inline v3s16 readV3S16(u8 *data)
+{
+ v3s16 p;
+ p.X = readS16(&data[0]);
+ p.Y = readS16(&data[2]);
+ p.Z = readS16(&data[4]);
+ return p;
+}
+
+/*
+ The above stuff directly interfaced to iostream
+*/
+
+inline void writeU8(std::ostream &os, u8 p)
+{
+ char buf[1] = {0};
+ writeU8((u8*)buf, p);
+ os.write(buf, 1);
+}
+inline u8 readU8(std::istream &is)
+{
+ char buf[1] = {0};
+ is.read(buf, 1);
+ return readU8((u8*)buf);
+}
+
+inline void writeU16(std::ostream &os, u16 p)
+{
+ char buf[2] = {0};
+ writeU16((u8*)buf, p);
+ os.write(buf, 2);
+}
+inline u16 readU16(std::istream &is)
+{
+ char buf[2] = {0};
+ is.read(buf, 2);
+ return readU16((u8*)buf);
+}
+
+inline void writeU32(std::ostream &os, u32 p)
+{
+ char buf[4] = {0};
+ writeU32((u8*)buf, p);
+ os.write(buf, 4);
+}
+inline u32 readU32(std::istream &is)
+{
+ char buf[4] = {0};
+ is.read(buf, 4);
+ return readU32((u8*)buf);
+}
+
+inline void writeS32(std::ostream &os, s32 p)
+{
+ char buf[4] = {0};
+ writeS32((u8*)buf, p);
+ os.write(buf, 4);
+}
+inline s32 readS32(std::istream &is)
+{
+ char buf[4] = {0};
+ is.read(buf, 4);
+ return readS32((u8*)buf);
+}
+
+inline void writeS16(std::ostream &os, s16 p)
+{
+ char buf[2] = {0};
+ writeS16((u8*)buf, p);
+ os.write(buf, 2);
+}
+inline s16 readS16(std::istream &is)
+{
+ char buf[2] = {0};
+ is.read(buf, 2);
+ return readS16((u8*)buf);
+}
+
+inline void writeS8(std::ostream &os, s8 p)
+{
+ char buf[1] = {0};
+ writeS8((u8*)buf, p);
+ os.write(buf, 1);
+}
+inline s8 readS8(std::istream &is)
+{
+ char buf[1] = {0};
+ is.read(buf, 1);
+ return readS8((u8*)buf);
+}
+
+inline void writeF1000(std::ostream &os, f32 p)
+{
+ char buf[4] = {0};
+ writeF1000((u8*)buf, p);
+ os.write(buf, 4);
+}
+inline f32 readF1000(std::istream &is)
+{
+ char buf[4] = {0};
+ is.read(buf, 4);
+ return readF1000((u8*)buf);
+}
+
+inline void writeV3F1000(std::ostream &os, v3f p)
+{
+ char buf[12];
+ writeV3F1000((u8*)buf, p);
+ os.write(buf, 12);
+}
+inline v3f readV3F1000(std::istream &is)
+{
+ char buf[12];
+ is.read(buf, 12);
+ return readV3F1000((u8*)buf);
+}
+
+inline void writeV2F1000(std::ostream &os, v2f p)
+{
+ char buf[8] = {0};
+ writeV2F1000((u8*)buf, p);
+ os.write(buf, 8);
+}
+inline v2f readV2F1000(std::istream &is)
+{
+ char buf[8] = {0};
+ is.read(buf, 8);
+ return readV2F1000((u8*)buf);
+}
+
+inline void writeV2S16(std::ostream &os, v2s16 p)
+{
+ char buf[4] = {0};
+ writeV2S16((u8*)buf, p);
+ os.write(buf, 4);
+}
+inline v2s16 readV2S16(std::istream &is)
+{
+ char buf[4] = {0};
+ is.read(buf, 4);
+ return readV2S16((u8*)buf);
+}
+
+inline void writeV3S16(std::ostream &os, v3s16 p)
+{
+ char buf[6] = {0};
+ writeV3S16((u8*)buf, p);
+ os.write(buf, 6);
+}
+inline v3s16 readV3S16(std::istream &is)
+{
+ char buf[6] = {0};
+ is.read(buf, 6);
+ return readV3S16((u8*)buf);
+}
+
+/*
+ More serialization stuff
+*/
+
+// Creates a string with the length as the first two bytes
+inline std::string serializeString(const std::string &plain)
+{
+ //assert(plain.size() <= 65535);
+ if(plain.size() > 65535)
+ throw SerializationError("String too long for serializeString");
+ char buf[2];
+ writeU16((u8*)&buf[0], plain.size());
+ std::string s;
+ s.append(buf, 2);
+ s.append(plain);
+ return s;
+}
+
+// Creates a string with the length as the first two bytes from wide string
+inline std::string serializeWideString(const std::wstring &plain)
+{
+ //assert(plain.size() <= 65535);
+ if(plain.size() > 65535)
+ throw SerializationError("String too long for serializeString");
+ char buf[2];
+ writeU16((u8*)buf, plain.size());
+ std::string s;
+ s.append(buf, 2);
+ for(u32 i=0; i<plain.size(); i++)
+ {
+ writeU16((u8*)buf, plain[i]);
+ s.append(buf, 2);
+ }
+ return s;
+}
+
+// Reads a string with the length as the first two bytes
+inline std::string deSerializeString(std::istream &is)
+{
+ char buf[2];
+ is.read(buf, 2);
+ if(is.gcount() != 2)
+ throw SerializationError("deSerializeString: size not read");
+ u16 s_size = readU16((u8*)buf);
+ if(s_size == 0)
+ return "";
+ Buffer<char> buf2(s_size);
+ is.read(&buf2[0], s_size);
+ std::string s;
+ s.reserve(s_size);
+ s.append(&buf2[0], s_size);
+ return s;
+}
+
+// Reads a wide string with the length as the first two bytes
+inline std::wstring deSerializeWideString(std::istream &is)
+{
+ char buf[2];
+ is.read(buf, 2);
+ if(is.gcount() != 2)
+ throw SerializationError("deSerializeString: size not read");
+ u16 s_size = readU16((u8*)buf);
+ if(s_size == 0)
+ return L"";
+ std::wstring s;
+ s.reserve(s_size);
+ for(u32 i=0; i<s_size; i++)
+ {
+ is.read(&buf[0], 2);
+ wchar_t c16 = readU16((u8*)buf);
+ s.append(&c16, 1);
+ }
+ return s;
+}
+
+// Creates a string with the length as the first four bytes
+inline std::string serializeLongString(const std::string &plain)
+{
+ char buf[4];
+ writeU32((u8*)&buf[0], plain.size());
+ std::string s;
+ s.append(buf, 4);
+ s.append(plain);
+ return s;
+}
+
+// Reads a string with the length as the first four bytes
+inline std::string deSerializeLongString(std::istream &is)
+{
+ char buf[4];
+ is.read(buf, 4);
+ if(is.gcount() != 4)
+ throw SerializationError("deSerializeLongString: size not read");
+ u32 s_size = readU32((u8*)buf);
+ if(s_size == 0)
+ return "";
+ Buffer<char> buf2(s_size);
+ is.read(&buf2[0], s_size);
+ std::string s;
+ s.reserve(s_size);
+ s.append(&buf2[0], s_size);
+ return s;
+}
+
+// Creates a string encoded in JSON format (almost equivalent to a C string literal)
+std::string serializeJsonString(const std::string &plain);
+
+// Reads a string encoded in JSON format
+std::string deSerializeJsonString(std::istream &is);
+
+#endif
+
diff --git a/src/util/string.cpp b/src/util/string.cpp
new file mode 100644
index 000000000..ee4df849e
--- /dev/null
+++ b/src/util/string.cpp
@@ -0,0 +1,43 @@
+/*
+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 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 "string.h"
+
+#include "sha1.h"
+#include "base64.h"
+
+// Get an sha-1 hash of the player's name combined with
+// the password entered. That's what the server uses as
+// their password. (Exception : if the password field is
+// blank, we send a blank password - this is for backwards
+// compatibility with password-less players).
+std::string translatePassword(std::string playername, std::wstring password)
+{
+ if(password.length() == 0)
+ return "";
+
+ std::string slt = playername + wide_to_narrow(password);
+ SHA1 sha1;
+ sha1.addBytes(slt.c_str(), slt.length());
+ unsigned char *digest = sha1.getDigest();
+ std::string pwd = base64_encode(digest, 20);
+ free(digest);
+ return pwd;
+}
+
diff --git a/src/util/string.h b/src/util/string.h
new file mode 100644
index 000000000..97b07f2ff
--- /dev/null
+++ b/src/util/string.h
@@ -0,0 +1,264 @@
+/*
+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 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.
+*/
+
+#ifndef UTIL_STRING_HEADER
+#define UTIL_STRING_HEADER
+
+#include "../irrlichttypes.h"
+#include "../strfnd.h" // For trim()
+#include "pointer.h"
+#include <string>
+#include <cstring>
+#include <vector>
+#include <sstream>
+
+static inline std::string padStringRight(std::string s, size_t len)
+{
+ if(len > s.size())
+ s.insert(s.end(), len - s.size(), ' ');
+ return s;
+}
+
+// ends: NULL- or ""-terminated array of strings
+// Returns "" if no end could be removed.
+static inline std::string removeStringEnd(const std::string &s, const char *ends[])
+{
+ const char **p = ends;
+ for(; (*p) && (*p)[0] != '\0'; p++){
+ std::string end = *p;
+ if(s.size() < end.size())
+ continue;
+ if(s.substr(s.size()-end.size(), end.size()) == end)
+ return s.substr(0, s.size() - end.size());
+ }
+ return "";
+}
+
+// Tests if two strings are equal, optionally case insensitive
+inline bool str_equal(const std::wstring& s1, const std::wstring& s2,
+ bool case_insensitive = false)
+{
+ if(case_insensitive)
+ {
+ if(s1.size() != s2.size())
+ return false;
+ for(size_t i = 0; i < s1.size(); ++i)
+ if(tolower(s1[i]) != tolower(s2[i]))
+ return false;
+ return true;
+ }
+ else
+ {
+ return s1 == s2;
+ }
+}
+
+// Tests if the second string is a prefix of the first, optionally case insensitive
+inline bool str_starts_with(const std::wstring& str, const std::wstring& prefix,
+ bool case_insensitive = false)
+{
+ if(str.size() < prefix.size())
+ return false;
+ if(case_insensitive)
+ {
+ for(size_t i = 0; i < prefix.size(); ++i)
+ if(tolower(str[i]) != tolower(prefix[i]))
+ return false;
+ }
+ else
+ {
+ for(size_t i = 0; i < prefix.size(); ++i)
+ if(str[i] != prefix[i])
+ return false;
+ }
+ return true;
+}
+
+inline std::wstring narrow_to_wide(const std::string& mbs)
+{
+ size_t wcl = mbs.size();
+ Buffer<wchar_t> wcs(wcl+1);
+ size_t l = mbstowcs(*wcs, mbs.c_str(), wcl);
+ if(l == (size_t)(-1))
+ return L"<invalid multibyte string>";
+ wcs[l] = 0;
+ return *wcs;
+}
+
+inline std::string wide_to_narrow(const std::wstring& wcs)
+{
+ size_t mbl = wcs.size()*4;
+ SharedBuffer<char> mbs(mbl+1);
+ size_t l = wcstombs(*mbs, wcs.c_str(), mbl);
+ if(l == (size_t)(-1))
+ mbs[0] = 0;
+ else
+ mbs[l] = 0;
+ return *mbs;
+}
+
+// Split a string using the given delimiter. Returns a vector containing
+// the component parts.
+inline std::vector<std::wstring> str_split(const std::wstring &str, wchar_t delimiter)
+{
+ std::vector<std::wstring> parts;
+ std::wstringstream sstr(str);
+ std::wstring part;
+ while(std::getline(sstr, part, delimiter))
+ parts.push_back(part);
+ return parts;
+}
+
+inline std::string lowercase(const std::string &s)
+{
+ std::string s2;
+ for(size_t i=0; i<s.size(); i++)
+ {
+ char c = s[i];
+ if(c >= 'A' && c <= 'Z')
+ c -= 'A' - 'a';
+ s2 += c;
+ }
+ return s2;
+}
+
+inline bool is_yes(const std::string &s)
+{
+ std::string s2 = lowercase(trim(s));
+ if(s2 == "y" || s2 == "yes" || s2 == "true" || s2 == "1")
+ return true;
+ return false;
+}
+
+inline s32 mystoi(const std::string &s, s32 min, s32 max)
+{
+ s32 i = atoi(s.c_str());
+ if(i < min)
+ i = min;
+ if(i > max)
+ i = max;
+ return i;
+}
+
+
+// MSVC2010 includes it's own versions of these
+//#if !defined(_MSC_VER) || _MSC_VER < 1600
+
+inline s32 mystoi(const std::string &s)
+{
+ return atoi(s.c_str());
+}
+
+inline s32 mystoi(const std::wstring &s)
+{
+ return atoi(wide_to_narrow(s).c_str());
+}
+
+inline float mystof(const std::string &s)
+{
+ // This crap causes a segfault in certain cases on MinGW
+ /*float f;
+ std::istringstream ss(s);
+ ss>>f;
+ return f;*/
+ // This works in that case
+ return atof(s.c_str());
+}
+
+//#endif
+
+#define stoi mystoi
+#define stof mystof
+
+inline std::string itos(s32 i)
+{
+ std::ostringstream o;
+ o<<i;
+ return o.str();
+}
+
+inline std::string ftos(float f)
+{
+ std::ostringstream o;
+ o<<f;
+ return o.str();
+}
+
+inline void str_replace(std::string & str, std::string const & pattern,
+ std::string const & replacement)
+{
+ std::string::size_type start = str.find(pattern, 0);
+ while(start != str.npos)
+ {
+ str.replace(start, pattern.size(), replacement);
+ start = str.find(pattern, start+replacement.size());
+ }
+}
+
+inline void str_replace_char(std::string & str, char from, char to)
+{
+ for(unsigned int i=0; i<str.size(); i++)
+ {
+ if(str[i] == from)
+ str[i] = to;
+ }
+}
+
+/*
+ Checks if a string contains only supplied characters
+*/
+inline bool string_allowed(const std::string &s, const std::string &allowed_chars)
+{
+ for(u32 i=0; i<s.size(); i++)
+ {
+ bool confirmed = false;
+ for(u32 j=0; j<allowed_chars.size(); j++)
+ {
+ if(s[i] == allowed_chars[j])
+ {
+ confirmed = true;
+ break;
+ }
+ }
+ if(confirmed == false)
+ return false;
+ }
+ return true;
+}
+
+/*
+ Forcefully wraps string into rows using \n
+ (no word wrap, used for showing paths in gui)
+*/
+inline std::string wrap_rows(const std::string &from, u32 rowlen)
+{
+ std::string to;
+ for(u32 i=0; i<from.size(); i++)
+ {
+ if(i != 0 && i%rowlen == 0)
+ to += '\n';
+ to += from[i];
+ }
+ return to;
+}
+
+std::string translatePassword(std::string playername, std::wstring password);
+
+#endif
+
diff --git a/src/util/thread.h b/src/util/thread.h
new file mode 100644
index 000000000..8e8c74ac5
--- /dev/null
+++ b/src/util/thread.h
@@ -0,0 +1,227 @@
+/*
+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 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.
+*/
+
+#ifndef UTIL_THREAD_HEADER
+#define UTIL_THREAD_HEADER
+
+#include "../irrlichttypes.h"
+#include <jthread.h>
+#include <jmutex.h>
+#include <jmutexautolock.h>
+
+template<typename T>
+class MutexedVariable
+{
+public:
+ MutexedVariable(T value):
+ m_value(value)
+ {
+ m_mutex.Init();
+ }
+
+ T get()
+ {
+ JMutexAutoLock lock(m_mutex);
+ return m_value;
+ }
+
+ void set(T value)
+ {
+ JMutexAutoLock lock(m_mutex);
+ m_value = value;
+ }
+
+ // You'll want to grab this in a SharedPtr
+ JMutexAutoLock * getLock()
+ {
+ return new JMutexAutoLock(m_mutex);
+ }
+
+ // You pretty surely want to grab the lock when accessing this
+ T m_value;
+
+private:
+ JMutex m_mutex;
+};
+
+/*
+ A base class for simple background thread implementation
+*/
+
+class SimpleThread : public JThread
+{
+ bool run;
+ JMutex run_mutex;
+
+public:
+
+ SimpleThread():
+ JThread(),
+ run(true)
+ {
+ run_mutex.Init();
+ }
+
+ virtual ~SimpleThread()
+ {}
+
+ virtual void * Thread() = 0;
+
+ bool getRun()
+ {
+ JMutexAutoLock lock(run_mutex);
+ return run;
+ }
+ void setRun(bool a_run)
+ {
+ JMutexAutoLock lock(run_mutex);
+ run = a_run;
+ }
+
+ void stop()
+ {
+ setRun(false);
+ while(IsRunning())
+ sleep_ms(100);
+ }
+};
+
+/*
+ A single worker thread - multiple client threads queue framework.
+*/
+
+template<typename Caller, typename Data>
+class CallerInfo
+{
+public:
+ Caller caller;
+ Data data;
+};
+
+template<typename Key, typename T, typename Caller, typename CallerData>
+class GetResult
+{
+public:
+ Key key;
+ T item;
+ core::list<CallerInfo<Caller, CallerData> > callers;
+};
+
+template<typename Key, typename T, typename Caller, typename CallerData>
+class ResultQueue: public MutexedQueue< GetResult<Key, T, Caller, CallerData> >
+{
+};
+
+template<typename Key, typename T, typename Caller, typename CallerData>
+class GetRequest
+{
+public:
+ GetRequest()
+ {
+ dest = NULL;
+ }
+ GetRequest(ResultQueue<Key,T, Caller, CallerData> *a_dest)
+ {
+ dest = a_dest;
+ }
+ GetRequest(ResultQueue<Key,T, Caller, CallerData> *a_dest,
+ Key a_key)
+ {
+ dest = a_dest;
+ key = a_key;
+ }
+ ~GetRequest()
+ {
+ }
+
+ Key key;
+ ResultQueue<Key, T, Caller, CallerData> *dest;
+ core::list<CallerInfo<Caller, CallerData> > callers;
+};
+
+template<typename Key, typename T, typename Caller, typename CallerData>
+class RequestQueue
+{
+public:
+ u32 size()
+ {
+ return m_queue.size();
+ }
+
+ void add(Key key, Caller caller, CallerData callerdata,
+ ResultQueue<Key, T, Caller, CallerData> *dest)
+ {
+ JMutexAutoLock lock(m_queue.getMutex());
+
+ /*
+ If the caller is already on the list, only update CallerData
+ */
+ for(typename core::list< GetRequest<Key, T, Caller, CallerData> >::Iterator
+ i = m_queue.getList().begin();
+ i != m_queue.getList().end(); i++)
+ {
+ GetRequest<Key, T, Caller, CallerData> &request = *i;
+
+ if(request.key == key)
+ {
+ for(typename core::list< CallerInfo<Caller, CallerData> >::Iterator
+ i = request.callers.begin();
+ i != request.callers.end(); i++)
+ {
+ CallerInfo<Caller, CallerData> &ca = *i;
+ if(ca.caller == caller)
+ {
+ ca.data = callerdata;
+ return;
+ }
+ }
+ CallerInfo<Caller, CallerData> ca;
+ ca.caller = caller;
+ ca.data = callerdata;
+ request.callers.push_back(ca);
+ return;
+ }
+ }
+
+ /*
+ Else add a new request to the queue
+ */
+
+ GetRequest<Key, T, Caller, CallerData> request;
+ request.key = key;
+ CallerInfo<Caller, CallerData> ca;
+ ca.caller = caller;
+ ca.data = callerdata;
+ request.callers.push_back(ca);
+ request.dest = dest;
+
+ m_queue.getList().push_back(request);
+ }
+
+ GetRequest<Key, T, Caller, CallerData> pop(bool wait_if_empty=false)
+ {
+ return m_queue.pop_front(wait_if_empty);
+ }
+
+private:
+ MutexedQueue< GetRequest<Key, T, Caller, CallerData> > m_queue;
+};
+
+#endif
+
diff --git a/src/util/timetaker.cpp b/src/util/timetaker.cpp
new file mode 100644
index 000000000..9cc87f3ea
--- /dev/null
+++ b/src/util/timetaker.cpp
@@ -0,0 +1,61 @@
+/*
+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 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 "timetaker.h"
+
+#include "gettime.h"
+#include "log.h"
+#include <ostream>
+
+TimeTaker::TimeTaker(const char *name, u32 *result)
+{
+ m_name = name;
+ m_result = result;
+ m_running = true;
+ m_time1 = getTimeMs();
+}
+
+u32 TimeTaker::stop(bool quiet)
+{
+ if(m_running)
+ {
+ u32 time2 = getTimeMs();
+ u32 dtime = time2 - m_time1;
+ if(m_result != NULL)
+ {
+ (*m_result) += dtime;
+ }
+ else
+ {
+ if(quiet == false)
+ infostream<<m_name<<" took "<<dtime<<"ms"<<std::endl;
+ }
+ m_running = false;
+ return dtime;
+ }
+ return 0;
+}
+
+u32 TimeTaker::getTime()
+{
+ u32 time2 = getTimeMs();
+ u32 dtime = time2 - m_time1;
+ return dtime;
+}
+
diff --git a/src/util/timetaker.h b/src/util/timetaker.h
new file mode 100644
index 000000000..8aad97d0f
--- /dev/null
+++ b/src/util/timetaker.h
@@ -0,0 +1,51 @@
+/*
+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 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.
+*/
+
+#ifndef UTIL_TIMETAKER_HEADER
+#define UTIL_TIMETAKER_HEADER
+
+#include "../irrlichttypes.h"
+
+/*
+ TimeTaker
+*/
+
+class TimeTaker
+{
+public:
+ TimeTaker(const char *name, u32 *result=NULL);
+
+ ~TimeTaker()
+ {
+ stop();
+ }
+
+ u32 stop(bool quiet=false);
+
+ u32 getTime();
+
+private:
+ const char *m_name;
+ u32 m_time1;
+ bool m_running;
+ u32 *m_result;
+};
+
+#endif
+
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