party (#15)

Resolves #6.
Updates #3.

Co-authored-by: Branden J Brown <zephyrtronium@gmail.com>
Reviewed-on: #15
Reviewed-by: madxmike <madxmike@noreply.localhost>

Assets/Scripts/HeroPartySO.cs

@@ -0,0 +1,16 @@
+using System.Collections;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using UnityEngine;
+
+[CreateAssetMenu(fileName = "HeroParty", menuName = "Hero Party")]
+public class HeroPartySO : ScriptableObject
+{
+    [SerializeField]
+    private List<HeroUnit> unitList = new List<HeroUnit>();
+    public ReadOnlyCollection<HeroUnit> UnitList => unitList.AsReadOnly();
+
+    public void Add(HeroUnit unit) { unitList.Add(unit); }
+    public void Remove(HeroUnit unit) { unitList.Remove(unit); }
+    public int Count => unitList.Count;
+}

Assets/Scripts/HeroPartySO.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: f0603cf6e7f1d884e89c3eb6a478a96c
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/HeroUnit.cs

@@ -1,6 +1,10 @@
 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
+using UnityEngine.Assertions;
+
+using System.Runtime.CompilerServices;
+[assembly: InternalsVisibleTo("TestsPlaymode")]
 
 /// <summary>
 /// Component that makes a duder a duder.
@@ -13,4 +17,17 @@ public class HeroUnit : MonoBehaviour
     [SerializeField] private long level;
     [SerializeField] private long xp;
     [SerializeField] private HeroAttributesSO attrs;
+    [SerializeField] private HeroPartySO _party;
+    internal HeroPartySO party => _party;
+
+    private void OnEnable()
+    {
+        Assert.IsNotNull(_party);
+        _party.Add(this);
+    }
+
+    private void OnDisable()
+    {
+        _party.Remove(this);
+    }
 }