/*
Minetest-c55
Copyright (C) 2010 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 UTILITY_HEADER
#define UTILITY_HEADER
#include <iostream>
#include <fstream>
#include <string>
#include <sstream>
#include <vector>
#include <jthread.h>
#include <jmutex.h>
#include <jmutexautolock.h>
#include "common_irrlicht.h"
#include "debug.h"
#include "strfnd.h"
#include "exceptions.h"
#include "porting.h"
extern const v3s16 g_6dirs[6];
extern const v3s16 g_26dirs[26];
// 26th is (0,0,0)
extern const v3s16 g_27dirs[27];
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 writeF1000(u8 *data, f32 i){
writeS32(data, i*1000);
}
inline f32 readF1000(u8 *data){
return (f32)readS32(data)/1000.;
}
inline void writeS16(u8 *data, s16 i){
writeU16(data, (u16)i);
}
inline s16 readS16(u8 *data){
return (s16)readU16(data);
}
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 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];
writeU8((u8*)buf, p);
os.write(buf, 1);
}
inline u8 readU8(std::istream &is)
{
char buf[1];
is.read(buf, 1);
return readU8((u8*)buf);
}
inline void writeU16(std::ostream &os, u16 p)
{
char buf[2];
writeU16((u8*)buf, p);
os.write(buf, 2);
}
inline u16 readU16(std::istream &is)
{
char buf[2];
is.read(buf, 2);
return readU16((u8*)buf);
}
inline void writeU32(std::ostream &os, u16 p)
{
char buf[4];
writeU16((u8*)buf, p);
os.write(buf, 4);
}
inline u16 readU32(std::istream &is)
{
char buf[4];
is.read(buf, 4);
return readU32((u8*)buf);
}
inline void writeF1000(std::ostream &os, f32 p)
{
char buf[2];
writeF1000((u8*)buf, p);
os.write(buf, 2);
}
inline f32 readF1000(std::istream &is)
{
char buf[2];
is.read(buf, 2);
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);
}
/*
None of these are used at the moment
*/
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(unsigned int size)
{
m_size = size;
data = new T[size];
}
Buffer(const Buffer &buffer)
{
m_size = buffer.m_size;
data = new T[buffer.m_size];
memcpy(data, buffer.data, buffer.m_size);
}
Buffer(T *t, unsigned int size)
{
m_size = size;
data = new T[size];
memcpy(data, t, size);
}
~Buffer()
{
delete[] data;
}
T & operator[](unsigned int i) const
{
return data[i];
}
T * operator*() const
{
return data;
}
unsigned int getSize() const
{
return m_size;
}
private:
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;
}
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;
}
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;
};
/*
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;
};
// Calculates the borders of a "d-radius" cube
inline 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));
}
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