Initial commit

2023-07-30 00:22:03 -07:00
commit 8e6966bfcd
39 changed files with 1417 additions and 0 deletions
@@ -0,0 +1,121 @@
+using System;
+
+namespace WacK.Data.Chart
+{
+	/// <summary>
+	/// Represents a non-timed chart position in measure and beat as a fraction of the measure.
+	/// </summary>
+	public class MeasureBeat
+	{
+		public const int DENOMINATOR = 1920;
+		
+		public int measure { get; private set; }
+		/// <summary>
+		/// Beat in the measure, represented as beat/1920 of a measure.
+		/// </summary>
+		public int beat { get; private set; }
+
+		public MeasureBeat(int measure, int beat)
+		{
+			this.measure = measure;
+			this.beat = beat;
+			Normalize();
+		}
+
+		public void Normalize()
+		{
+			// beats larger than denominator
+			if (Math.Abs(beat) >= DENOMINATOR)
+			{
+				measure += beat / DENOMINATOR;
+				beat %= DENOMINATOR;
+			}
+			// positive measure, negative beats
+			if (beat < 0 && measure > 0)
+			{
+				measure--;
+				beat += DENOMINATOR;
+			}
+		}
+
+		public override string ToString()
+		{
+			return $"MeasureBeat({this.measure}, {this.beat}/{DENOMINATOR})";
+		}
+
+		public override int GetHashCode()
+		{
+			return measure*DENOMINATOR + beat;
+		}
+
+		public override bool Equals(object tgt)
+		{
+			if (tgt == null) return false;
+			
+			return this == (MeasureBeat)tgt;
+		}
+
+		/* STATIC CONSTANTS */
+		public readonly static MeasureBeat ZERO = new MeasureBeat(0, 0);
+
+		/* STATIC OPERATORS */
+		public static MeasureBeat operator +(MeasureBeat a) => a;
+		public static MeasureBeat operator -(MeasureBeat a)
+			=> new MeasureBeat(-a.measure, -a.beat);
+		
+		public static MeasureBeat operator +(MeasureBeat a, MeasureBeat b)
+		{
+			var meas = a.measure + b.measure;
+			var beat = a.beat + b.beat;
+			return new MeasureBeat(meas, beat);
+		}
+
+		public static MeasureBeat operator -(MeasureBeat a, MeasureBeat b)
+		{
+			return a + -b;
+		}
+
+		public static bool operator ==(MeasureBeat a, MeasureBeat b)
+		{
+			return a.measure == b.measure && a.beat == b.beat;
+		}
+
+		public static bool operator !=(MeasureBeat a, MeasureBeat b)
+		{
+			return !(a == b);
+		}
+
+		public static bool operator <(MeasureBeat a, MeasureBeat b)
+		{
+			if (a.measure < b.measure) return true;
+
+			if (a.measure == b.measure)
+			{
+				return a.beat < b.beat;
+			}
+
+			return false;
+		}
+
+		public static bool operator >(MeasureBeat a, MeasureBeat b)
+		{
+			if (a != b)
+			{
+				return !(a < b);
+			}
+			return false;
+		}
+
+		public static bool operator <=(MeasureBeat a, MeasureBeat b)
+		{
+			if (a == b) return true;
+			return a < b;
+		}
+
+		public static bool operator >=(MeasureBeat a, MeasureBeat b)
+		{
+			if (a == b) return true;
+			return a > b;
+		}
+	}
+}