Initial Commit

Assets/Scripts/Systems/Items/IItemUseSystem.cs

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+using Unity.Entities;
+using UnityEngine;
+
+namespace DefaultNamespace
+{
+	public interface IItemUseSystem
+	{
+		ItemUseFlags Flags { get; }
+
+		/// <summary>
+		/// The use type in animator. Converst to integer index.
+		/// </summary>
+		ItemUseType UseType { get; }
+
+		/// <summary>
+		/// Should use animation be on additive layer
+		/// </summary>
+		bool IsAdditiveUsage { get; }
+
+		bool CanUse(ItemPrefab prefab);
+
+		bool Validate(ItemPrefab prefab, Entity user, Entity inventory);
+
+		Sprite GetItemIcon(ItemPrefab prefab);
+
+		void Use(ItemPrefab prefab, ref ItemData itemData, Entity user, Entity inventory);
+	}
+}