Add basic fruit placement tool

osu.Game.Rulesets.Catch/Edit/Blueprints/CatchPlacementBlueprint.cs

@@ -0,0 +1,27 @@
+// 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 osu.Framework.Allocation;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.UI;
+using osu.Game.Rulesets.UI.Scrolling;
+
+namespace osu.Game.Rulesets.Catch.Edit.Blueprints
+{
+    public class CatchPlacementBlueprint<THitObject> : PlacementBlueprint
+        where THitObject : CatchHitObject, new()
+    {
+        protected new THitObject HitObject => (THitObject)base.HitObject;
+
+        protected ScrollingHitObjectContainer HitObjectContainer => (ScrollingHitObjectContainer)playfield.HitObjectContainer;
+
+        [Resolved]
+        private Playfield playfield { get; set; }
+
+        public CatchPlacementBlueprint()
+            : base(new THitObject())
+        {
+        }
+    }
+}

osu.Game.Rulesets.Catch/Edit/Blueprints/FruitPlacementBlueprint.cs

@@ -0,0 +1,50 @@
+// 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 osu.Framework.Input.Events;
+using osu.Game.Rulesets.Catch.Edit.Blueprints.Components;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Edit;
+using osuTK.Input;
+
+namespace osu.Game.Rulesets.Catch.Edit.Blueprints
+{
+    public class FruitPlacementBlueprint : CatchPlacementBlueprint<Fruit>
+    {
+        private readonly FruitOutline outline;
+
+        public FruitPlacementBlueprint()
+        {
+            InternalChild = outline = new FruitOutline();
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            BeginPlacement();
+        }
+
+        protected override void Update()
+        {
+            base.Update();
+
+            outline.UpdateFrom(HitObjectContainer, HitObject);
+        }
+
+        protected override bool OnMouseDown(MouseDownEvent e)
+        {
+            if (e.Button != MouseButton.Left) return base.OnMouseDown(e);
+
+            EndPlacement(true);
+            return true;
+        }
+
+        public override void UpdateTimeAndPosition(SnapResult result)
+        {
+            base.UpdateTimeAndPosition(result);
+
+            HitObject.X = ToLocalSpace(result.ScreenSpacePosition).X;
+        }
+    }
+}

osu.Game.Rulesets.Catch/Edit/CatchHitObjectComposer.cs

@@ -17,7 +17,10 @@ public CatchHitObjectComposer(CatchRuleset ruleset)
         {
         }
 
-        protected override IReadOnlyList<HitObjectCompositionTool> CompositionTools => System.Array.Empty<HitObjectCompositionTool>();
+        protected override IReadOnlyList<HitObjectCompositionTool> CompositionTools => new HitObjectCompositionTool[]
+        {
+            new FruitCompositionTool(),
+        };
 
         public override SnapResult SnapScreenSpacePositionToValidTime(Vector2 screenSpacePosition)
         {

osu.Game.Rulesets.Catch/Edit/FruitCompositionTool.cs

@@ -0,0 +1,20 @@
+// 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 osu.Game.Rulesets.Catch.Edit.Blueprints;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Edit.Tools;
+
+namespace osu.Game.Rulesets.Catch.Edit
+{
+    public class FruitCompositionTool : HitObjectCompositionTool
+    {
+        public FruitCompositionTool()
+            : base(nameof(Fruit))
+        {
+        }
+
+        public override PlacementBlueprint CreatePlacementBlueprint() => new FruitPlacementBlueprint();
+    }
+}