Added basic enemy

Does not attack the player currently

Assets/Materials/RedMat.mat

@@ -7,8 +7,8 @@ Material:
   m_CorrespondingSourceObject: {fileID: 0}
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
-  m_Name: WhiteMat
+  m_Name: RedMat
-  m_Shader: {fileID: 46, guid: 0000000000000000f000000000000000, type: 0}
+  m_Shader: {fileID: 10770, guid: 0000000000000000f000000000000000, type: 0}
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   m_ModifiedSerializedProperties: 0
   m_ValidKeywords: []
@@ -62,6 +62,7 @@ Material:
     m_Ints: []
     m_Floats:
     - _BumpScale: 1
+    - _ColorMask: 15
     - _Cutoff: 0.5
     - _DetailNormalMapScale: 1
     - _DstBlend: 0
@@ -75,9 +76,15 @@ Material:
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     - _SpecularHighlights: 1
     - _SrcBlend: 1
+    - _Stencil: 0
+    - _StencilComp: 8
+    - _StencilOp: 0
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+    - _StencilWriteMask: 255
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+    - _UseUIAlphaClip: 0
     - _ZWrite: 1
     m_Colors:
-    - _Color: {r: 1, g: 1, b: 1, a: 1}
+    - _Color: {r: 1, g: 0, b: 0, a: 1}
     - _EmissionColor: {r: 0, g: 0, b: 0, a: 1}
   m_BuildTextureStacks: []

Assets/Prefabs/Enemy.prefab

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Assets/Prefabs/Enemy.prefab.meta

@@ -0,0 +1,7 @@
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Assets/Scenes/SampleScene.unity

@@ -153,6 +153,7 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 2895addc317815345b19503bab859a6a, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  m_EnemyPrefab: {fileID: 345795220292517504, guid: ec4a924a38b208240b281bd7983b07b7, type: 3}
 --- !u!4 &104400498
 Transform:
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Assets/Scripts/EnemyController.cs

@@ -0,0 +1,9 @@
+using UnityEngine;
+
+public class EnemyController : OrbitalPositionBehaviour
+{
+    public override void OnStart()
+    {
+        m_OrbitalPosition.m_DeletedAtCentre = true;
+    }
+}

Assets/Scripts/EnemyController.cs.meta

@@ -0,0 +1,11 @@
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Assets/Scripts/OrbitalPosition.cs

@@ -10,6 +10,9 @@ public class OrbitalPosition
 
     public Transform owner = null;
 
+    public int m_SpinSpeed = 1;
+    public bool m_DeletedAtCentre = false;
+
     public OrbitalPosition(GameObject _owner)
     {
         pRing = GlobalOrbitalPositionManager.LastRingID;
@@ -126,7 +129,15 @@ public class GlobalOrbitalPositionManager : MonoBehaviour
         foreach (OrbitalPosition orbitalPosition in m_ObjectInstances)
         {
             if (!m_Distances.ContainsKey(orbitalPosition.pRing))
+            {
+                if (orbitalPosition.m_DeletedAtCentre)
+                {
+                    Destroy(orbitalPosition.owner.gameObject);
+                    continue;
+                }
+
                 orbitalPosition.pRing = m_LastGeneratedRing;
+            }
 
             float distance = m_Distances[orbitalPosition.pRing];
             orbitalPosition.DistanceFromCentre = distance;
@@ -158,5 +169,5 @@ public abstract class OrbitalPositionBehaviour : MonoBehaviour
     private void OnDestroy() =>
         GlobalOrbitalPositionManager.UnregisterOrbitalPositionInstance(m_OrbitalPosition);
 
-    public abstract void OnStart();
+    public virtual void OnStart() { }
 }

Assets/Scripts/PlayerController.cs

@@ -1,11 +1,9 @@
-using System.Collections;
-using System.Collections.Generic;
-using UnityEditor;
 using UnityEngine;
 
 public class PlayerController : OrbitalPositionBehaviour
 {
     float m_StartPosition;
+    public GameObject m_EnemyPrefab;
 
     public override void OnStart()
     {
@@ -18,5 +16,10 @@ public class PlayerController : OrbitalPositionBehaviour
         {
             m_OrbitalPosition.pRing += 1;
         }
+
+        if (Input.GetKey(KeyCode.E))
+        {
+            Instantiate(m_EnemyPrefab);
+        }
     }
 }

ProjectSettings/TagManager.asset

@@ -3,7 +3,8 @@
 --- !u!78 &1
 TagManager:
   serializedVersion: 2
-  tags: []
+  tags:
+  - Enemy
   layers:
   - Default
   - TransparentFX