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Use random_shuffle.

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Glenn Maynard
2003-09-28 20:21:49 +00:00
parent 9982447fb8
commit 34fbd470a7
1 changed files with 1 additions and 6 deletions
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stepmania/src/MusicWheel.cpp
+1 -6
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@@ -1230,12 +1230,7 @@ void MusicWheel::StartRoulette()
void MusicWheel::StartRandom() void MusicWheel::StartRandom()
{ {
/* Shuffle the roulette wheel. */ /* Shuffle the roulette wheel. */
/*Linear shuffle means that we shuffle the deck from the beginning to end, random_shuffle( m_WheelItemDatas[SORT_ROULETTE].begin(), m_WheelItemDatas[SORT_ROULETTE].end() );
but never switch a song from the end with one < i. This method gives an
even distribution for any number of songs less than RAND_MAX.*/
unsigned total = m_WheelItemDatas[SORT_ROULETTE].size();
for(unsigned i = 0; i < total; ++i)
swap(m_WheelItemDatas[SORT_ROULETTE][i], m_WheelItemDatas[SORT_ROULETTE][(rand() % (total-i))+i]);
SetOpenGroup("", SongSortOrder(SORT_ROULETTE)); SetOpenGroup("", SongSortOrder(SORT_ROULETTE));