Add base barline.

osu.Game.Modes.Taiko/Objects/BarLine.cs

@@ -0,0 +1,28 @@
+using osu.Game.Beatmaps.Timing;
+using osu.Game.Database;
+
+namespace osu.Game.Modes.Taiko.Objects
+{
+    public class BarLine
+    {
+        /// <summary>
+        /// The start time of the control point this bar line represents.
+        /// </summary>
+        public double StartTime;
+
+        /// <summary>
+        /// The time to scroll in the bar line.
+        /// </summary>
+        public double PreEmpt;
+
+        /// <summary>
+        /// Whether this is a major bar line (affects display).
+        /// </summary>
+        public bool IsMajor;
+
+        public void ApplyDefaults(TimingInfo timing, BeatmapDifficulty difficulty)
+        {
+            PreEmpt = 600 / (timing.SliderVelocityAt(StartTime) * difficulty.SliderMultiplier) * 1000;
+        }
+    }
+}

osu.Game.Modes.Taiko/osu.Game.Modes.Taiko.csproj

@@ -50,6 +50,7 @@
     <Compile Include="Beatmaps\TaikoBeatmapConverter.cs" />
     <Compile Include="Beatmaps\TaikoBeatmapProcessor.cs" />
     <Compile Include="Judgements\TaikoJudgementInfo.cs" />
+    <Compile Include="Objects\BarLine.cs" />
     <Compile Include="TaikoDifficultyCalculator.cs" />
     <Compile Include="Objects\Drawable\DrawableTaikoHit.cs" />
     <Compile Include="Objects\TaikoHitObject.cs" />