added encounter system

Packages/com.jovian.encounter-system/Runtime/IEncounter.cs

@@ -0,0 +1,56 @@
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace Jovian.EncounterSystem {
+    public interface IEncounter {
+        EncounterDefinition EncounterDefinition { get; set; }
+        EncounterProperties EncounterProperties { get; set; }
+        EncounterVisuals EncounterVisuals { get; set; }
+        EncounterDialogOptionSet EncounterDialogOptionSet { get; set; }
+        IEncounterKind Kind { get; set; }
+    }
+
+    /// <summary>Default concrete encounter. Extend via a new <see cref="IEncounterKind"/>, not by subclassing.</summary>
+    [Serializable]
+    public class Encounter : IEncounter {
+        [field: SerializeField] public EncounterDefinition EncounterDefinition { get; set; }
+        [field: SerializeField] public EncounterProperties EncounterProperties { get; set; }
+        [field: SerializeField] public EncounterVisuals EncounterVisuals { get; set; }
+        [field: SerializeField] public EncounterDialogOptionSet EncounterDialogOptionSet { get; set; }
+
+        [field: SerializeReference, SubclassSelector]
+        public IEncounterKind Kind { get; set; }
+    }
+
+    [Serializable]
+    public class EncounterDefinition {
+        /// <summary>Stable GUID assigned at creation. Never edit manually.</summary>
+        [HideInInspector]
+        public string internalId = Guid.NewGuid().ToString();
+
+        public string id;
+        public string name;
+        public string description;
+    }
+
+    [Serializable]
+    public class EncounterDialogOption {
+        public DialogLineRef text;
+
+        [SerializeReference, SubclassSelector]
+        public List<IEncounterEvent> events;
+    }
+
+    [Serializable]
+    public class EncounterVisuals {
+        public Sprite icon;
+        public Color encounterColor;
+        public Sprite encounterArt;
+    }
+
+    [Serializable]
+    public class EncounterProperties {
+        public int difficulty;
+    }
+}