/// <summary>
/// Set the <see cref="Event"/> sets with specified array of <see cref="Event"/> for specified <see cref="Difficulty"/>.
/// <para>
/// This method will recalculate <see cref="EventCount"/>, <see cref="NoteCount"/>, <see cref="MeasureCount"/>,
/// <see cref="BlockCount"/>, <see cref="BlockOffset"/> and <see cref="CoverArtOffset"/>.
/// </para>
/// </summary>
/// <param name="difficulty">Specifies the <see cref="Difficulty"/> to set.</param>
/// <param name="events">New array of <see cref="Event"/> to subtitue the current event sets.</param>
public void SetEvents(OJN.Difficulty difficulty, Event[] events)
{
Events[difficulty] = events;
EventCount[difficulty] = events.Length;
NoteCount[difficulty] = events.Where((ev) =>
ev.Channel != Event.ChannelType.Measurement &&
ev.Channel != Event.ChannelType.BPM &&
ev.Channel != Event.ChannelType.BGM
).Count();
MeasureCount[difficulty] = events.Max((ev) => ev.Measure) + 1;
// Reset offset
foreach (var diff in Enum.GetValues(typeof(OJN.Difficulty)) as OJN.Difficulty[])
{
// Skip MX as we dont really have it in current implementation
if (diff == Difficulty.MX)
{
continue;
}
// Get initial offset, typically offset or previous difficulty offset;
// We'll calculate the rest offset later
int offset = 300;
if (diff == Difficulty.EX)
{
BlockOffset[diff] = offset;
}
else
{
BlockOffset[diff] = BlockOffset[diff - 1];
}
// Get the number of blocks
BlockCount[diff] = Events[diff].GroupBy((ev) => new { ev.Measure, ev.Tempo, ev.LaneIndex }).Count();
// No need to calculate the previous block size if it's EX difficulty
// Because it is first difficulty and no previous difficulty
if (diff == Difficulty.EX)
{
continue;
}
// Calculate total block size of previous difficulty to get block offset of current difficulty
var blocks = Events[diff - 1].GroupBy((ev) => new { ev.Measure, ev.Tempo, ev.LaneIndex });
foreach (var block in blocks)
{
// Calculate the event size, one event worth 4 bytes
// Regardless it is empty event or not
// Block header also contains 8 bytes
BlockOffset[diff] += 8 + (block.Count() * 4);
}
// Calculate the HX block size as well to get CoverArtOffset
if (diff == Difficulty.HX)
{
blocks = Events[diff].GroupBy((ev) => new { ev.Measure, ev.Tempo, ev.LaneIndex });
CoverArtOffset = BlockOffset[diff];
foreach (var block in blocks)
{
// Again, Calculate the block size from the sets of events.
CoverArtOffset += 8 + (block.Count() * 4);
}
}
}
}
/// <summary>
/// Gets an array of <see cref="Event"/> of specified <see cref="Difficulty"/>.
/// </summary>
/// <param name="difficulty">Specifies the <see cref="Difficulty"/> of <see cref="Event"/> to retrieve.</param>
/// <returns>An array of <see cref="Event"/> of specified <see cref="Difficulty"/>.</returns>
public Event[] GetEvents(OJN.Difficulty difficulty)
{
return(Events[difficulty]);
}