Merge branch 'master' into fruit-piece-in-place

osu.Game.Rulesets.Catch/Skinning/Default/PulpFormation.cs

@@ -0,0 +1,55 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osuTK;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Catch.Skinning.Default
+{
+    public abstract class PulpFormation : CompositeDrawable
+    {
+        public readonly Bindable<Color4> AccentColour = new Bindable<Color4>();
+
+        protected const float LARGE_PULP_3 = 16f * FruitPiece.RADIUS_ADJUST;
+        protected const float DISTANCE_FROM_CENTRE_3 = 0.15f;
+
+        protected const float LARGE_PULP_4 = LARGE_PULP_3 * 0.925f;
+        protected const float DISTANCE_FROM_CENTRE_4 = DISTANCE_FROM_CENTRE_3 / 0.925f;
+
+        protected const float SMALL_PULP = LARGE_PULP_3 / 2;
+
+        private int numPulps;
+
+        protected PulpFormation()
+        {
+            RelativeSizeAxes = Axes.Both;
+        }
+
+        protected static Vector2 PositionAt(float angle, float distance) => new Vector2(
+            distance * MathF.Sin(angle * MathF.PI / 180),
+            distance * MathF.Cos(angle * MathF.PI / 180));
+
+        protected void Clear()
+        {
+            for (; numPulps > 0; numPulps--)
+                InternalChildren[numPulps - 1].Alpha = 0;
+        }
+
+        protected void Add(Vector2 position, Vector2 size)
+        {
+            if (numPulps == InternalChildren.Count)
+                AddInternal(new Pulp { AccentColour = { BindTarget = AccentColour } });
+
+            var pulp = InternalChildren[numPulps];
+            pulp.Position = position;
+            pulp.Size = size;
+            pulp.Alpha = 1;
+
+            numPulps++;
+        }
+    }
+}