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cache Course::GetCourseInfo results

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This commit is contained in:
Glenn Maynard
2003-12-21 02:54:23 +00:00
parent be307e76bd
commit ef6b831ea3
6 changed files with 60 additions and 11 deletions
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stepmania/src/Course.cpp
+33 -5
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@@ -548,29 +548,42 @@ static vector<Song*> GetFilteredBestSongs( StepsType nt )
return ret;
}
/* This is called by many simple functions, like Course::GetTotalSeconds, and may
* be called on all songs to sort. It can take time to execute, so we cache the
* results. */
void Course::GetCourseInfo( StepsType nt, vector<Course::Info> &ci, int Difficult ) const
{
vector<CourseEntry> entries = m_entries;
const InfoParams params( nt, IsDifficult(Difficult) );
InfoCache::const_iterator it = m_InfoCache.find( params );
if( it != m_InfoCache.end() )
{
ci = it->second;
return;
}
/* Different seed for each course, but the same for the whole round: */
RandomGen rnd( GAMESTATE->m_iRoundSeed + GetHashForString(m_sName) );
vector<CourseEntry> tmp_entries;
if( m_bRandomize )
{
/* Always randomize the same way per round. Otherwise, the displayed course
* will change every time it's viewed, and the displayed order will have no
* bearing on what you'll actually play. */
random_shuffle( entries.begin(), entries.end(), rnd );
tmp_entries = m_entries;
random_shuffle( tmp_entries.begin(), tmp_entries.end(), rnd );
}
const vector<CourseEntry> &entries = m_bRandomize? tmp_entries:m_entries;
/* This can take some time, so don't fill it out unless we need it. */
bool bMostPlayedSet = false;
vector<Song*> vSongsByMostPlayed;
vector<Song*> AllSongsShuffled = SONGMAN->GetAllSongs();
random_shuffle( AllSongsShuffled.begin(), AllSongsShuffled.end(), rnd );
int CurSong = 0; /* Current offset into AllSongsShuffled */
bool bShuffledSet = false;
vector<Song*> AllSongsShuffled;
int CurSong = 0; /* Current offset into AllSongsShuffled */
ci.clear();
for( unsigned i=0; i<entries.size(); i++ )
@@ -602,6 +615,13 @@ void Course::GetCourseInfo( StepsType nt, vector<Course::Info> &ci, int Difficul
case COURSE_ENTRY_RANDOM:
case COURSE_ENTRY_RANDOM_WITHIN_GROUP:
{
if( !bShuffledSet )
{
AllSongsShuffled = SONGMAN->GetAllSongs();
random_shuffle( AllSongsShuffled.begin(), AllSongsShuffled.end(), rnd );
bShuffledSet = true;
}
// find a song with the notes we want
for( unsigned j=0; j<AllSongsShuffled.size(); j++ )
{
@@ -695,6 +715,14 @@ void Course::GetCourseInfo( StepsType nt, vector<Course::Info> &ci, int Difficul
cinfo.Difficult = IsDifficult(Difficult);
ci.push_back( cinfo );
}
/* Cache results. */
m_InfoCache[params] = ci;
}
void Course::ClearCache()
{
m_InfoCache.clear();
}
RageColor Course::GetColor() const