Re-organize all projects (#4166)

Content.Shared/Movement/Components/TileFrictionModifier.cs

@@ -0,0 +1,59 @@
+#nullable enable
+using System;
+using Content.Shared.NetIDs;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Maths;
+using Robust.Shared.Players;
+using Robust.Shared.Serialization;
+using Robust.Shared.Serialization.Manager.Attributes;
+using Robust.Shared.ViewVariables;
+
+namespace Content.Shared.Movement.Components
+{
+    [RegisterComponent]
+    public class SharedTileFrictionModifier : Component
+    {
+        public override string Name => "TileFrictionModifier";
+
+        /// <summary>
+        ///     Multiply the tilefriction cvar by this to get the body's actual tilefriction.
+        /// </summary>
+        [ViewVariables(VVAccess.ReadWrite)]
+        public float Modifier
+        {
+            get => _modifier;
+            set
+            {
+                if (MathHelper.CloseTo(_modifier, value)) return;
+
+                _modifier = value;
+            }
+        }
+
+        [DataField("modifier")]
+        private float _modifier = 1.0f;
+
+        public override ComponentState GetComponentState(ICommonSession session)
+        {
+            return new TileFrictionComponentState(_modifier);
+        }
+
+        public override void HandleComponentState(ComponentState? curState, ComponentState? nextState)
+        {
+            base.HandleComponentState(curState, nextState);
+            if (curState is not TileFrictionComponentState tileState) return;
+            _modifier = tileState.Modifier;
+        }
+
+        [NetSerializable, Serializable]
+        protected class TileFrictionComponentState : ComponentState
+        {
+            public float Modifier;
+
+            public TileFrictionComponentState(float modifier) : base(ContentNetIDs.TILE_FRICTION)
+            {
+                Modifier = modifier;
+            }
+        }
+    }
+}