Initial Commit

Assets/Scripts/Systems/Actor/ActorGroundCheckSystem.cs

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+using System;
+using System.Linq;
+using Unity.Entities;
+using UnityEngine;
+using Zenject;
+
+namespace DefaultNamespace
+{
+	[UpdateInGroup(typeof(SimulationSystemGroup))]
+	public class ActorGroundCheckSystem : InjectableComponentSystem
+	{
+		[Serializable]
+		public class Settings
+		{
+			public float GroundCheckDistance;
+			public LayerMask GroundMask;
+			public float MaxGroundCheckDistance;
+		}
+
+		[Inject] private readonly Settings settings;
+		private readonly RaycastHit2D[] hits = new RaycastHit2D[1];
+
+		protected override void OnSystemUpdate()
+		{
+			Entities.ForEach(
+				(Rigidbody2D rigidBody, ref ActorData actor) =>
+				{
+					var filter = new ContactFilter2D { useLayerMask = true, layerMask = settings.GroundMask };
+					var hitCount = rigidBody.Cast(Vector2.down, filter, hits, settings.MaxGroundCheckDistance);
+					actor.Grounded = hitCount > 0 && hits.Any(h => h.distance <= settings.GroundCheckDistance);
+					actor.GroundUp = hitCount > 0 ? hits[0].normal : Vector2.up;
+					actor.GroundDinstance = hitCount > 0 ? hits.Min(h => h.distance) : -1;
+					if (hitCount > 0)
+					{
+						Debug.DrawLine(hits[0].point, hits[0].point + hits[0].normal * hits[0].distance, Color.red);
+					}
+				});
+		}
+	}
+}