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18f2eafde5
vcmi/Global.h
beegee1 1d57b75bc5 - random number generation refactoring 
- fixed mantis #1743
2014-04-10 19:22:32 +02:00

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#pragma once
/*
* Global.h, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
/* ---------------------------------------------------------------------------- */
/* Compiler detection */
/* ---------------------------------------------------------------------------- */
// Fixed width bool data type is important for serialization
static_assert(sizeof(bool) == 1, "Bool needs to be 1 byte in size.");
#if defined _M_X64 && defined _WIN32 //Win64 -> cannot load 32-bit DLLs for video handling
# define DISABLE_VIDEO
#endif
#ifdef __GNUC__
# define GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__ * 10 + __GNUC_PATCHLEVEL__)
#endif
#if !defined(__clang__) && defined(__GNUC__) && (GCC_VERSION < 460)
# error VCMI requires at least gcc-4.6 for successful compilation or clang-3.1. Please update your compiler
#endif
#if defined(__GNUC__) && (GCC_VERSION == 470 || GCC_VERSION == 471)
# error This GCC version has buggy std::array::at version and should not be used. Please update to 4.7.2 or use 4.6.x.
#endif
/* ---------------------------------------------------------------------------- */
/* Guarantee compiler features */
/* ---------------------------------------------------------------------------- */
//defining available c++11 features
//initialization lists - gcc or clang
#if defined(__clang__) || defined(__GNUC__)
# define CPP11_USE_INITIALIZERS_LIST
#endif
//override keyword - not present in gcc-4.6
#if !defined(_MSC_VER) && !defined(__clang__) && !(defined(__GNUC__) && (GCC_VERSION >= 470))
# define override
#endif
/* ---------------------------------------------------------------------------- */
/* Suppress some compiler warnings */
/* ---------------------------------------------------------------------------- */
#ifdef _MSC_VER
# pragma warning (disable : 4800 ) /* disable conversion to bool warning -- I think it's intended in all places */
#endif
/* ---------------------------------------------------------------------------- */
/* Commonly used C++, Boost headers */
/* ---------------------------------------------------------------------------- */
#define WIN32_LEAN_AND_MEAN // Exclude rarely-used stuff from Windows headers
#define _USE_MATH_DEFINES
#include <cstdio>
#include <stdio.h>
#include <algorithm>
#include <array>
#include <cassert>
#include <climits>
#include <cmath>
#include <cstdlib>
#include <functional>
#include <fstream>
#include <iomanip>
#include <iostream>
#include <map>
#include <memory>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <string>
#include <unordered_set>
#include <unordered_map>
#include <utility>
#include <vector>
//The only available version is 3, as of Boost 1.50
#include <boost/version.hpp>
#define BOOST_FILESYSTEM_VERSION 3
#if BOOST_VERSION > 105000
#define BOOST_THREAD_VERSION 3
#endif
#define BOOST_THREAD_DONT_PROVIDE_THREAD_DESTRUCTOR_CALLS_TERMINATE_IF_JOINABLE 1
//#define BOOST_BIND_NO_PLACEHOLDERS
#include <boost/algorithm/string.hpp>
#include <boost/assign.hpp>
#include <boost/cstdint.hpp>
#include <boost/current_function.hpp>
#include <boost/crc.hpp>
#include <boost/date_time/posix_time/posix_time.hpp>
#include <boost/date_time/posix_time/posix_time_io.hpp>
#include <boost/filesystem.hpp>
#include <boost/format.hpp>
#include <boost/lexical_cast.hpp>
#include <boost/logic/tribool.hpp>
#include <boost/optional.hpp>
#include <boost/program_options.hpp>
#include <boost/range/adaptor/filtered.hpp>
#include <boost/range/adaptor/reversed.hpp>
#include <boost/range/algorithm.hpp>
#include <boost/thread.hpp>
#include <boost/variant.hpp>
#include <boost/math/special_functions/round.hpp>
#ifdef ANDROID
#include <android/log.h>
#endif
/* ---------------------------------------------------------------------------- */
/* Usings */
/* ---------------------------------------------------------------------------- */
using std::shared_ptr;
using std::unique_ptr;
using std::make_shared;
//using namespace std::placeholders;
namespace range = boost::range;
/* ---------------------------------------------------------------------------- */
/* Typedefs */
/* ---------------------------------------------------------------------------- */
// Integral data types
typedef boost::uint64_t ui64; //unsigned int 64 bits (8 bytes)
typedef boost::uint32_t ui32; //unsigned int 32 bits (4 bytes)
typedef boost::uint16_t ui16; //unsigned int 16 bits (2 bytes)
typedef boost::uint8_t ui8; //unsigned int 8 bits (1 byte)
typedef boost::int64_t si64; //signed int 64 bits (8 bytes)
typedef boost::int32_t si32; //signed int 32 bits (4 bytes)
typedef boost::int16_t si16; //signed int 16 bits (2 bytes)
typedef boost::int8_t si8; //signed int 8 bits (1 byte)
// Lock typedefs
typedef boost::lock_guard<boost::mutex> TLockGuard;
typedef boost::lock_guard<boost::recursive_mutex> TLockGuardRec;
/* ---------------------------------------------------------------------------- */
/* Macros */
/* ---------------------------------------------------------------------------- */
// Import + Export macro declarations
#ifdef _WIN32
# ifdef __GNUC__
# define DLL_EXPORT __attribute__((dllexport))
# else
# define DLL_EXPORT __declspec(dllexport)
# endif
#else
# ifdef __GNUC__
# define DLL_EXPORT __attribute__ ((visibility("default")))
# endif
#endif
#ifdef _WIN32
# ifdef __GNUC__
# define DLL_IMPORT __attribute__((dllimport))
# else
# define DLL_IMPORT __declspec(dllimport)
# endif
#else
# ifdef __GNUC__
# define DLL_IMPORT __attribute__ ((visibility("default")))
# endif
#endif
#ifdef VCMI_DLL
# define DLL_LINKAGE DLL_EXPORT
#else
# define DLL_LINKAGE DLL_IMPORT
#endif
#define THROW_FORMAT(message, formatting_elems) throw std::runtime_error(boost::str(boost::format(message) % formatting_elems))
#define ASSERT_IF_CALLED_WITH_PLAYER if(!player) {logGlobal->errorStream() << BOOST_CURRENT_FUNCTION; assert(0);}
//XXX pls dont - 'debug macros' are usually more trouble than it's worth
#define HANDLE_EXCEPTION \
catch (const std::exception& e) { \
logGlobal->errorStream() << e.what(); \
throw; \
} \
catch (const std::exception * e) \
{ \
logGlobal->errorStream() << e->what(); \
throw; \
} \
catch (const std::string& e) { \
logGlobal->errorStream() << e; \
throw; \
}
#define HANDLE_EXCEPTIONC(COMMAND) \
catch (const std::exception& e) { \
COMMAND; \
logGlobal->errorStream() << e.what(); \
throw; \
} \
catch (const std::string &e) \
{ \
COMMAND; \
logGlobal->errorStream() << e; \
throw; \
}
// can be used for counting arrays
template<typename T, size_t N> char (&_ArrayCountObj(const T (&)[N]))[N];
#define ARRAY_COUNT(arr) (sizeof(_ArrayCountObj(arr)))
// should be used for variables that becomes unused in release builds (e.g. only used for assert checks)
#define UNUSED(VAR) ((void)VAR)
/* ---------------------------------------------------------------------------- */
/* VCMI standard library */
/* ---------------------------------------------------------------------------- */
#include "lib/logging/CLogger.h"
void inline handleException()
{
try
{
throw;
}
catch(const std::exception & ex)
{
logGlobal->errorStream() << ex.what();
}
catch(const std::string & ex)
{
logGlobal->errorStream() << ex;
}
catch(...)
{
logGlobal->errorStream() << "Sorry, caught unknown exception type. No more info available.";
}
}
template<typename T>
std::ostream & operator<<(std::ostream & out, const boost::optional<T> & opt)
{
if(opt) return out << *opt;
else return out << "empty";
}
template<typename T>
std::ostream & operator<<(std::ostream & out, const std::vector<T> & container)
{
out << "[";
for(auto it = container.begin(); it != container.end(); ++it)
{
out << *it;
if(std::prev(container.end()) != it) out << ", ";
}
return out << "]";
}
namespace vstd
{
// combine hashes. Present in boost but not in std
template <class T>
inline void hash_combine(std::size_t& seed, const T& v)
{
std::hash<T> hasher;
seed ^= hasher(v) + 0x9e3779b9 + (seed<<6) + (seed>>2);
}
//returns true if container c contains item i
template <typename Container, typename Item>
bool contains(const Container & c, const Item &i)
{
return std::find(std::begin(c), std::end(c),i) != std::end(c);
}
//returns true if container c contains item i
template <typename Container, typename Pred>
bool contains_if(const Container & c, Pred p)
{
return std::find_if(std::begin(c), std::end(c), p) != std::end(c);
}
//returns true if map c contains item i
template <typename V, typename Item, typename Item2>
bool contains(const std::map<Item,V> & c, const Item2 &i)
{
return c.find(i)!=c.end();
}
//returns true if unordered set c contains item i
template <typename Item>
bool contains(const std::unordered_set<Item> & c, const Item &i)
{
return c.find(i)!=c.end();
}
template <typename V, typename Item, typename Item2>
bool contains(const std::unordered_map<Item,V> & c, const Item2 &i)
{
return c.find(i)!=c.end();
}
//returns position of first element in vector c equal to s, if there is no such element, -1 is returned
template <typename Container, typename T2>
int find_pos(const Container & c, const T2 &s)
{
size_t i=0;
for (auto iter = std::begin(c); iter != std::end(c); iter++, i++)
if(*iter == s)
return i;
return -1;
}
//Func f tells if element matches
template <typename Container, typename Func>
int find_pos_if(const Container & c, const Func &f)
{
auto ret = boost::range::find_if(c, f);
if(ret != std::end(c))
return std::distance(std::begin(c), ret);
return -1;
}
//returns iterator to the given element if present in container, end() if not
template <typename Container, typename Item>
typename Container::iterator find(Container & c, const Item &i)
{
return std::find(c.begin(),c.end(),i);
}
//returns const iterator to the given element if present in container, end() if not
template <typename Container, typename Item>
typename Container::const_iterator find(const Container & c, const Item &i)
{
return std::find(c.begin(),c.end(),i);
}
//removes element i from container c, returns false if c does not contain i
template <typename Container, typename Item>
typename Container::size_type operator-=(Container &c, const Item &i)
{
typename Container::iterator itr = find(c,i);
if(itr == c.end())
return false;
c.erase(itr);
return true;
}
//assigns greater of (a, b) to a and returns maximum of (a, b)
template <typename t1, typename t2>
t1 &amax(t1 &a, const t2 &b)
{
if(a >= b)
return a;
else
{
a = b;
return a;
}
}
//assigns smaller of (a, b) to a and returns minimum of (a, b)
template <typename t1, typename t2>
t1 &amin(t1 &a, const t2 &b)
{
if(a <= b)
return a;
else
{
a = b;
return a;
}
}
//makes a to fit the range <b, c>
template <typename t1, typename t2, typename t3>
t1 &abetween(t1 &a, const t2 &b, const t3 &c)
{
amax(a,b);
amin(a,c);
return a;
}
//checks if a is between b and c
template <typename t1, typename t2, typename t3>
bool isbetween(const t1 &value, const t2 &min, const t3 &max)
{
return value > min && value < max;
}
//checks if a is within b and c
template <typename t1, typename t2, typename t3>
bool iswithin(const t1 &value, const t2 &min, const t3 &max)
{
return value >= min && value <= max;
}
template <typename t1, typename t2>
struct assigner
{
public:
t1 &op1;
t2 op2;
assigner(t1 &a1, const t2 & a2)
:op1(a1), op2(a2)
{}
void operator()()
{
op1 = op2;
}
};
// Assigns value a2 to a1. The point of time of the real operation can be controlled
// with the () operator.
template <typename t1, typename t2>
assigner<t1,t2> assigno(t1 &a1, const t2 &a2)
{
return assigner<t1,t2>(a1,a2);
}
//deleted pointer and sets it to nullptr
template <typename T>
void clear_pointer(T* &ptr)
{
delete ptr;
ptr = nullptr;
}
#if _MSC_VER >= 1800
using std::make_unique;
#else
template<typename T>
std::unique_ptr<T> make_unique()
{
return std::unique_ptr<T>(new T());
}
template<typename T, typename Arg1>
std::unique_ptr<T> make_unique(Arg1 &&arg1)
{
return std::unique_ptr<T>(new T(std::forward<Arg1>(arg1)));
}
template<typename T, typename Arg1, typename Arg2>
std::unique_ptr<T> make_unique(Arg1 &&arg1, Arg2 &&arg2)
{
return std::unique_ptr<T>(new T(std::forward<Arg1>(arg1), std::forward<Arg2>(arg2)));
}
template<typename T, typename Arg1, typename Arg2, typename Arg3>
std::unique_ptr<T> make_unique(Arg1 &&arg1, Arg2 &&arg2, Arg3 &&arg3)
{
return std::unique_ptr<T>(new T(std::forward<Arg1>(arg1), std::forward<Arg2>(arg2), std::forward<Arg3>(arg3)));
}
template<typename T, typename Arg1, typename Arg2, typename Arg3, typename Arg4>
std::unique_ptr<T> make_unique(Arg1 &&arg1, Arg2 &&arg2, Arg3 &&arg3, Arg4 &&arg4)
{
return std::unique_ptr<T>(new T(std::forward<Arg1>(arg1), std::forward<Arg2>(arg2), std::forward<Arg3>(arg3), std::forward<Arg4>(arg4)));
}
#endif
template <typename Container>
typename Container::const_reference circularAt(const Container &r, size_t index)
{
assert(r.size());
index %= r.size();
auto itr = std::begin(r);
std::advance(itr, index);
return *itr;
}
template<typename Range, typename Predicate>
void erase_if(Range &vec, Predicate pred)
{
vec.erase(boost::remove_if(vec, pred),vec.end());
}
template<typename Elem, typename Predicate>
void erase_if(std::set<Elem> &setContainer, Predicate pred)
{
auto itr = setContainer.begin();
auto endItr = setContainer.end();
while(itr != endItr)
{
auto tmpItr = itr++;
if(pred(*tmpItr))
setContainer.erase(tmpItr);
}
}
//works for map and std::map, maybe something else
template<typename Key, typename Val, typename Predicate>
void erase_if(std::map<Key, Val> &container, Predicate pred)
{
auto itr = container.begin();
auto endItr = container.end();
while(itr != endItr)
{
auto tmpItr = itr++;
if(pred(*tmpItr))
container.erase(tmpItr);
}
}
template<typename InputRange, typename OutputIterator, typename Predicate>
OutputIterator copy_if(const InputRange &input, OutputIterator result, Predicate pred)
{
return std::copy_if(boost::const_begin(input), std::end(input), result, pred);
}
template <typename Container>
std::insert_iterator<Container> set_inserter(Container &c)
{
return std::inserter(c, c.end());
}
//Returns iterator to the element for which the value of ValueFunction is minimal
template<class ForwardRange, class ValueFunction>
auto minElementByFun(const ForwardRange& rng, ValueFunction vf) -> decltype(std::begin(rng))
{
/* Clang crashes when instantiating this function template and having PCH compilation enabled.
* There is a bug report here: http://llvm.org/bugs/show_bug.cgi?id=18744
* Current bugfix is to don't use a typedef for decltype(*std::begin(rng)) and to use decltype
* directly for both function parameters.
*/
return boost::min_element(rng, [&] (decltype(*std::begin(rng)) lhs, decltype(*std::begin(rng)) rhs) -> bool
{
return vf(lhs) < vf(rhs);
});
}
//Returns iterator to the element for which the value of ValueFunction is maximal
template<class ForwardRange, class ValueFunction>
auto maxElementByFun(const ForwardRange& rng, ValueFunction vf) -> decltype(std::begin(rng))
{
/* Clang crashes when instantiating this function template and having PCH compilation enabled.
* There is a bug report here: http://llvm.org/bugs/show_bug.cgi?id=18744
* Current bugfix is to don't use a typedef for decltype(*std::begin(rng)) and to use decltype
* directly for both function parameters.
*/
return boost::max_element(rng, [&] (decltype(*std::begin(rng)) lhs, decltype(*std::begin(rng)) rhs) -> bool
{
return vf(lhs) < vf(rhs);
});
}
template<typename T>
void advance(T &obj, int change)
{
obj = (T)(((int)obj) + change);
}
template <typename Container>
typename Container::value_type backOrNull(const Container &c) //returns last element of container or nullptr if it is empty (to be used with containers of pointers)
{
if(c.size())
return c.back();
else
return typename Container::value_type();
}
template <typename Container>
typename Container::value_type frontOrNull(const Container &c) //returns first element of container or nullptr if it is empty (to be used with containers of pointers)
{
if(c.size())
return c.front();
else
return nullptr;
}
template <typename Container, typename Index>
bool isValidIndex(const Container &c, Index i)
{
return i >= 0 && i < c.size();
}
template <typename Container, typename Index>
boost::optional<typename Container::const_reference> tryAt(const Container &c, Index i)
{
if(isValidIndex(c, i))
{
auto itr = c.begin();
std::advance(itr, i);
return *itr;
}
return boost::none;
}
template <typename Container, typename Pred>
static boost::optional<typename Container::const_reference> tryFindIf(const Container &r, const Pred &t)
{
auto pos = range::find_if(r, t);
if(pos == boost::end(r))
return boost::none;
else
return *pos;
}
template <typename Container>
typename Container::const_reference atOrDefault(const Container &r, size_t index, const typename Container::const_reference &defaultValue)
{
if(index < r.size())
return r[index];
return defaultValue;
}
using boost::math::round;
}
using vstd::operator-=;
using vstd::make_unique;
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