Added custom collision

Assets/Scripts/OrbitalPosition.cs

@@ -7,16 +7,17 @@ public class OrbitalPosition
     public Int64 pRing = 0;
     public float DistanceFromCentre = 0;
     public float RadiusDistance = 0;
+    public float ObjectRadius = 0.1f;
 
-    public Transform owner = null;
+    public OrbitalPositionBehaviour Behaviour;
+    public Transform Owner = null;
 
-    public int m_SpinSpeed = 1;
-    public bool m_DeletedAtCentre = false;
+    public int SpinSpeed = 1;
 
     public OrbitalPosition(GameObject _owner)
     {
         pRing = GlobalOrbitalPositionManager.LastRingID;
-        owner = _owner.transform;
+        Owner = _owner.transform;
     }
 
     public Vector3 TranslateToVec3() => new
@@ -38,6 +39,9 @@ public class GlobalOrbitalPositionManager : MonoBehaviour
     private readonly List<Ring> m_Rings = new();
     private readonly Dictionary<Int64, float> m_Distances = new();
 
+    private OrbitalPosition m_PlayerOrbitalPosition;
+    public static void SetPlayer(OrbitalPosition player) => s_Instance.m_PlayerOrbitalPosition = player;
+
     private float m_TimeOfLastRingSpawn = float.NegativeInfinity;
 
     private Int64 m_LastGeneratedRing = 0;
@@ -69,7 +73,7 @@ public class GlobalOrbitalPositionManager : MonoBehaviour
         s_Instance.m_PrecalculatedPositions[CIRCLE_POINTS] = s_Instance.m_PrecalculatedPositions[0];
     }
 
-    public void Update()
+    private void Update()
     {
         if (Time.time - m_TimeOfLastRingSpawn > GlobalOrbitalSettings.GapDistance)
         {
@@ -130,12 +134,7 @@ public class GlobalOrbitalPositionManager : MonoBehaviour
         {
             if (!m_Distances.ContainsKey(orbitalPosition.pRing))
             {
-                if (orbitalPosition.m_DeletedAtCentre)
-                {
-                    Destroy(orbitalPosition.owner.gameObject);
-                    continue;
-                }
-
+                orbitalPosition.Behaviour.OnReachCentre();
                 orbitalPosition.pRing = m_LastGeneratedRing;
             }
 
@@ -143,7 +142,26 @@ public class GlobalOrbitalPositionManager : MonoBehaviour
             orbitalPosition.DistanceFromCentre = distance;
             orbitalPosition.RadiusDistance = (orbitalPosition.RadiusDistance + (Time.deltaTime * GlobalOrbitalSettings.RadiusSpeed)) % (Mathf.PI * 2);
 
-            orbitalPosition.owner.position = orbitalPosition.TranslateToVec3();
+            orbitalPosition.Owner.position = orbitalPosition.TranslateToVec3();
+        }
+    }
+
+    private void FixedUpdate()
+    {
+        foreach (OrbitalPosition orbital in m_ObjectInstances)
+        {
+            if (orbital == m_PlayerOrbitalPosition)
+                continue;
+
+            Vector2 a = orbital.TranslateToVec3();
+            Vector2 b = m_PlayerOrbitalPosition.TranslateToVec3();
+            float distance = (a - b).magnitude;
+            float radii = orbital.ObjectRadius + m_PlayerOrbitalPosition.ObjectRadius;
+            if (distance < radii)
+            {
+                orbital.Behaviour.OnCollision(m_PlayerOrbitalPosition.Behaviour);
+                m_PlayerOrbitalPosition.Behaviour.OnCollision(orbital.Behaviour);
+            }
         }
     }
 
@@ -160,9 +178,12 @@ public abstract class OrbitalPositionBehaviour : MonoBehaviour
 
     private void Start()
     {
-        m_OrbitalPosition = new OrbitalPosition(gameObject);
-        GlobalOrbitalPositionManager.RegisterOrbitalPositionInstance(m_OrbitalPosition);
+        m_OrbitalPosition = new OrbitalPosition(gameObject)
+        {
+            Behaviour = this
+        };
 
+        GlobalOrbitalPositionManager.RegisterOrbitalPositionInstance(m_OrbitalPosition);
         OnStart();
     }
 
@@ -170,4 +191,8 @@ public abstract class OrbitalPositionBehaviour : MonoBehaviour
         GlobalOrbitalPositionManager.UnregisterOrbitalPositionInstance(m_OrbitalPosition);
 
     public virtual void OnStart() { }
+
+    public virtual void OnReachCentre() { }
+
+    public virtual void OnCollision(OrbitalPositionBehaviour other) { }
 }