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-rw-r--r--src/utility.h81
1 files changed, 76 insertions, 5 deletions
diff --git a/src/utility.h b/src/utility.h
index 8f34c8711..2b01dedf0 100644
--- a/src/utility.h
+++ b/src/utility.h
@@ -613,11 +613,15 @@ inline v3s16 arealim(v3s16 p, s16 d)
return p;
}
+// NOTE: There seems to be some problem with this on some systems:
+// http://pastebin.com/vwJP2GZ6
inline std::wstring narrow_to_wide(const std::string& mbs)
{
size_t wcl = mbs.size();
- SharedBuffer<wchar_t> wcs(wcl+1);
+ 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;
}
@@ -627,7 +631,7 @@ 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((int)l == -1)
+ if(l == (size_t)(-1))
mbs[0] = 0;
else
mbs[l] = 0;
@@ -1312,7 +1316,7 @@ private:
};
/*
- FIFO queue
+ FIFO queue (well, actually a FILO also)
*/
template<typename T>
class Queue
@@ -1326,13 +1330,23 @@ public:
T pop_front()
{
if(m_list.size() == 0)
- throw ItemNotFoundException("MutexedQueue: queue is empty");
+ 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()
{
@@ -1344,7 +1358,7 @@ protected:
};
/*
- Thread-safe FIFO queue
+ Thread-safe FIFO queue (well, actually a FILO also)
*/
template<typename T>
@@ -1390,6 +1404,32 @@ public:
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()
{
@@ -1838,5 +1878,36 @@ inline std::string deSerializeLongString(std::istream &is)
return s;
}
+//
+
+inline u32 time_to_daynight_ratio(u32 time_of_day)
+{
+ const s32 daylength = 16;
+ const s32 nightlength = 6;
+ const s32 daytimelength = 8;
+ s32 d = daylength;
+ s32 t = (((time_of_day)%24000)/(24000/d));
+ if(t < nightlength/2 || t >= d - nightlength/2)
+ return 300;
+ else if(t >= d/2 - daytimelength/2 && t < d/2 + daytimelength/2)
+ return 1000;
+ else
+ return 750;
+}
+
+// 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
+ );
+}
+
+
#endif