Everything seems to be working!

Assets/Components/BlackHole.cs

@@ -0,0 +1,45 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+[RequireComponent(typeof(Rigidbody2D))]
+[RequireComponent(typeof(Collider2D))]
+public class BlackHole : MonoBehaviour
+{
+    public float Mass {
+        get {
+            return rigidbody.mass;
+        }
+        set {
+            rigidbody.mass = value;
+            Scale = Mass / Mathf.Pow(Mathf.PI, 2);
+        }
+    }
+
+    public float Scale {
+        get {
+            return transform.localScale.x;
+        }
+        set {
+            transform.localScale = new Vector3(value, value, 1);
+        }
+    }
+
+    protected new Rigidbody2D rigidbody;
+
+    protected void Awake() {
+        rigidbody = GetComponent<Rigidbody2D>();
+    }
+
+    protected void Start() {
+        Mass = 50;
+    }
+
+    protected void OnTriggerEnter2D(Collider2D other) {
+        Particle otherParticle = other.GetComponent<Particle>();
+        if(otherParticle != null) {
+            Mass += otherParticle.Mass;
+            Destroy(otherParticle.gameObject);
+        }
+    }
+}

Assets/Components/BlackHole.cs.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: c9b169f8058046d4fb7374586f318ae6
+guid: 2f86d0ffd697a6046a85ea2885566da9
 MonoImporter:
   externalObjects: {}
   serializedVersion: 2

Assets/Components/CameraPan.cs

@@ -3,12 +3,11 @@ using System.Collections.Generic;
 using UnityEngine;
 
 [RequireComponent(typeof(Camera))]
-public class PanWithMMB : MonoBehaviour
+public class CameraPan : MonoBehaviour
 {    
-    [Header("References")]
+    public string axisName;
-    protected new Camera camera;
 
-    [Header("Internals")]
+    protected new Camera camera;
     protected Vector3? lastMousePosition;
 
     private void Start() {
@@ -17,9 +16,9 @@ public class PanWithMMB : MonoBehaviour
     }
 
     private void Update() {
-        bool mmbIsPressed = Input.GetMouseButton(2);
+        bool panIsPressed = Input.GetAxisRaw(axisName) != 0f;
         Vector3? currentMousePosition = null;
-        if(mmbIsPressed) {
+        if(panIsPressed) {
             currentMousePosition = camera.ScreenToWorldPoint(Input.mousePosition);
             if(lastMousePosition.HasValue) {
                 Vector3 positionDelta = lastMousePosition.Value - currentMousePosition.Value;

Assets/Components/GameController.cs

@@ -4,6 +4,7 @@ using UnityEngine;
 
 public class GameController : MonoBehaviour
 {
-    [Header("Global Variables")]
+    public float gravitationConstant = 2;
-    public float gravitationConstant;
+    public int particlesToMerge = 5;
+    public int scaleMultiplier = 3;
 }

Assets/Components/Gravitation.cs

@@ -5,6 +5,9 @@ using UnityEngine;
 [RequireComponent(typeof(Rigidbody2D))]
 public class Gravitation : MonoBehaviour
 {    
+    [Header("Config")]
+    public bool isStatic;
+
     [Header("Forces")]
     protected Vector3 appliedForce;
 
@@ -16,17 +19,23 @@ public class Gravitation : MonoBehaviour
     protected new Rigidbody2D rigidbody;
     protected GameController gameController;
 
-
+    public float Mass {
-    protected float mass {
         get {
             return rigidbody.mass;
         }
+    }
 
-        set {
+    public float GravitationConstant {
-            rigidbody.mass = value;
+        get {
+            return gameController.gravitationConstant;
         }
     }
 
+    private void Awake() {
+        rigidbody = GetComponent<Rigidbody2D>();
+        gameController = GameObject.Find("GameController").GetComponent<GameController>();
+    }
+
     private void OnEnable() {
         if(simulatedObjects == null) {
             simulatedObjects = new List<Gravitation>();
@@ -41,8 +50,6 @@ public class Gravitation : MonoBehaviour
 
     private void Start()
     {
-        rigidbody = GetComponent<Rigidbody2D>();
-        gameController = GameObject.Find("GameController").GetComponent<GameController>();
         appliedForce = new Vector3(0f, 0f, 0f);
     }
 
@@ -52,12 +59,11 @@ public class Gravitation : MonoBehaviour
         foreach(Gravitation other in simulatedObjects) {
             if(other.positionInList <= this.positionInList) continue;
             float distance = Vector3.Distance(this.transform.position, other.transform.position);
-            float force = gameController.gravitationConstant * this.mass * other.mass / Mathf.Pow(distance, 2);
+            float force = GravitationConstant * this.Mass * other.Mass / Mathf.Pow(distance, 2);
             Vector3 direction = (other.transform.position - this.transform.position).normalized;
-            this.appliedForce += direction * force;
+            if(!this.isStatic) rigidbody.AddForce(direction * force);
-            other.appliedForce -= direction * force;
+            if(!other.isStatic) other.rigidbody.AddForce(-direction * force);
         }
-        rigidbody.AddForce(appliedForce);
         appliedForce = new Vector3(0, 0, 0);
     }
 }

Assets/Components/Merge.cs

@@ -1,65 +0,0 @@
-using System.Collections;
-using System.Collections.Generic;
-using UnityEngine;
-
-[RequireComponent(typeof(CircleCollider2D))]
-public class Merge : MonoBehaviour
-{
-    [Header("Config")]
-    public GameObject mergeIntoPrefab;
-    public bool setMergedMassFromTotal;
-
-    [Header("References")]
-    protected new CircleCollider2D collider;
-
-    [Header("Internals")]
-    protected List<Merge> mergeables;
-
-    private void Start()
-    {
-        collider = GetComponent<CircleCollider2D>();
-        mergeables = new List<Merge>();
-        mergeables.Add(this);
-    }
-
-    private void OnTriggerEnter2D(Collider2D other) {
-        Merge otherMerge = other.GetComponent<Merge>();
-        if(otherMerge != null) {
-            mergeables.Add(otherMerge);
-            if(CanMerge()) DoMerge();
-        }
-    }
-
-    private void OnTriggerExit2D(Collider2D other) {
-        Merge otherMerge = other.GetComponent<Merge>();
-        if(otherMerge != null) {
-            mergeables.Remove(otherMerge);
-        }
-    }
-
-    protected bool CanMerge() {
-        return mergeables.Count >= 5;
-    }
-
-    protected void DoMerge() {
-        GameObject mergeResult = Instantiate(mergeIntoPrefab, transform.position, Quaternion.identity);
-        MergedInfo mergedInfo = mergeResult.AddComponent<MergedInfo>();
-        mergedInfo.mergedCount = mergeables.Count;
-
-        foreach(Merge merged in mergeables.ToArray()) {
-            Rigidbody2D mergedBody = merged.GetComponentInParent<Rigidbody2D>();
-            if(mergedBody != null) {
-                mergedInfo.mergedMass += mergedBody.mass;
-            }
-            Destroy(merged.transform.parent.gameObject);
-        }
-        
-        if(setMergedMassFromTotal) {
-            Rigidbody2D mergeRigidbody = mergeResult.GetComponent<Rigidbody2D>();
-            if(mergeRigidbody != null) {
-                mergeRigidbody.useAutoMass = false;
-                mergeRigidbody.mass = mergedInfo.mergedMass;
-            }
-        }
-    }
-}

Assets/Components/MergedInfo.cs

@@ -1,9 +0,0 @@
-using System.Collections;
-using System.Collections.Generic;
-using UnityEngine;
-
-public class MergedInfo : MonoBehaviour
-{
-    public int mergedCount;
-    public float mergedMass;
-}

Assets/Components/Merger.cs

@@ -0,0 +1,57 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+[RequireComponent(typeof(CircleCollider2D))]
+public class Merger : MonoBehaviour
+{
+    public Particle particle;
+    protected List<Merger> mergeCandidates;
+
+    protected Collider2D Collider {
+        get {
+            return particle.mergeCollider;
+        }
+    }
+
+    protected int ParticlesToMerge {
+        get {
+            return particle.gameController.particlesToMerge;
+        }
+    }
+
+    
+    protected void Awake() {
+        particle = GetComponentInParent<Particle>();
+    }
+
+    protected void Start() {
+        mergeCandidates = new List<Merger>();
+    }
+
+    private void OnTriggerEnter2D(Collider2D other) {
+        Merger otherMerger = other.GetComponent<Merger>();
+        if(otherMerger == null) return;
+        Particle otherParticle = otherMerger.particle;
+        if(this.particle.Tier != otherParticle.Tier) return;
+        mergeCandidates.Add(otherMerger);
+        if(CanMerge()) DoMerge();
+    }
+
+    private void OnTriggerExit2D(Collider2D other) {
+        Merger otherMerger = other.GetComponent<Merger>();
+        if(otherMerger == null) return;
+        mergeCandidates.Remove(otherMerger);
+    }
+
+    protected bool CanMerge() {
+        return mergeCandidates.Count >= ParticlesToMerge;
+    }
+
+    protected void DoMerge() {
+        particle.Tier += 1;
+        foreach(Merger merged in mergeCandidates.ToArray()) {
+            Destroy(merged.particle.gameObject);
+        }
+    }
+}

Assets/Components/Particle.cs

@@ -0,0 +1,52 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+
+[RequireComponent(typeof(Rigidbody2D))]
+[RequireComponent(typeof(Collider2D))]
+[RequireComponent(typeof(Gravitation))]
+public class Particle : MonoBehaviour {
+    protected int _tier = 0;
+
+    public new Rigidbody2D rigidbody;
+    public Gravitation gravitation;
+    public GameController gameController;
+    public Merger merger;
+    public Collider2D particleCollider;
+    public Collider2D mergeCollider;
+
+    public int Tier {
+        get {
+            return _tier;
+        }
+        set {
+            _tier += 1;
+            Scale *= gameController.scaleMultiplier;
+        }
+    }
+
+    public float Scale {
+        get {
+            return transform.localScale.x;
+        }
+        set {
+            transform.localScale = new Vector3(value, value, 1);
+        }
+    }
+
+    public float Mass {
+        get {
+            return Mathf.Pow(gameController.particlesToMerge, Tier);
+        }
+    }
+
+    protected void Awake() {
+        rigidbody = GetComponent<Rigidbody2D>(); 
+        gravitation = GetComponent<Gravitation>();
+        gameController = GameObject.Find("GameController").GetComponent<GameController>();
+        merger = GetComponentInChildren<Merger>();
+        particleCollider = GetComponent<Collider2D>();
+        mergeCollider = merger.GetComponent<Collider2D>();
+    }
+}

Assets/Components/Particle.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 14169e6aef16b684f869320425c986ab
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Components/ZoomWithScrollWheel.cs

@@ -5,11 +5,9 @@ using UnityEngine;
 [RequireComponent(typeof(Camera))]
 public class ZoomWithScrollWheel : MonoBehaviour
 {
-    [Header("Config")]
     public float zoomMultiplier;
     public string zoomAxisName;
 
-    [Header("References")]
     protected new Camera camera;
 
     void Start()
@@ -19,7 +17,7 @@ public class ZoomWithScrollWheel : MonoBehaviour
 
     void Update()
     {
-        float mouseWheel = Input.GetAxis(zoomAxisName);
+        float mouseWheel = Input.GetAxisRaw(zoomAxisName);
         if(mouseWheel != 0) {
             camera.orthographicSize = Mathf.Clamp(camera.orthographicSize - mouseWheel * zoomMultiplier, 0, float.PositiveInfinity);
         }

Assets/Prefabs/BlackHole.prefab

@@ -1,6 +1,6 @@
 %YAML 1.1
 %TAG !u! tag:unity3d.com,2011:
---- !u!1 &5508245818244581766
+--- !u!1 &2084275844800580026
 GameObject:
   m_ObjectHideFlags: 0
   m_CorrespondingSourceObject: {fileID: 0}
@@ -8,38 +8,40 @@ GameObject:
   m_PrefabAsset: {fileID: 0}
   serializedVersion: 6
   m_Component:
-  - component: {fileID: 6572685539244401289}
+  - component: {fileID: 2084275844800580021}
-  - component: {fileID: 7383058586621682203}
+  - component: {fileID: 2084275844800580022}
-  - component: {fileID: 3951280190561447455}
+  - component: {fileID: 2084275844800580024}
-  - component: {fileID: 5758426961102176851}
+  - component: {fileID: 2084275844800580023}
+  - component: {fileID: 2084275844800580025}
+  - component: {fileID: 3271020097140099258}
   m_Layer: 0
-  m_Name: Sun
+  m_Name: Protostar
   m_TagString: Untagged
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
   m_StaticEditorFlags: 0
   m_IsActive: 1
---- !u!4 &6572685539244401289
+--- !u!4 &2084275844800580021
 Transform:
   m_ObjectHideFlags: 0
   m_CorrespondingSourceObject: {fileID: 0}
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
-  m_GameObject: {fileID: 5508245818244581766}
+  m_GameObject: {fileID: 2084275844800580026}
   m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
-  m_LocalPosition: {x: -2.31, y: -0.09, z: 0}
+  m_LocalPosition: {x: 0, y: 0, z: 0}
-  m_LocalScale: {x: 1.5, y: 1.5, z: 1.5}
+  m_LocalScale: {x: 1.5, y: 1.5, z: 1}
   m_Children: []
   m_Father: {fileID: 0}
   m_RootOrder: 0
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
---- !u!212 &7383058586621682203
+--- !u!212 &2084275844800580022
 SpriteRenderer:
   m_ObjectHideFlags: 0
   m_CorrespondingSourceObject: {fileID: 0}
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
-  m_GameObject: {fileID: 5508245818244581766}
+  m_GameObject: {fileID: 2084275844800580026}
   m_Enabled: 1
   m_CastShadows: 0
   m_ReceiveShadows: 0
@@ -73,7 +75,7 @@ SpriteRenderer:
   m_SortingLayer: 0
   m_SortingOrder: 0
   m_Sprite: {fileID: 21300000, guid: d8cf31929ca287542bdc219ec19f002e, type: 3}
-  m_Color: {r: 1, g: 1, b: 0, a: 1}
+  m_Color: {r: 1, g: 1, b: 1, a: 0.15686275}
   m_FlipX: 0
   m_FlipY: 0
   m_DrawMode: 0
@@ -83,19 +85,19 @@ SpriteRenderer:
   m_WasSpriteAssigned: 1
   m_MaskInteraction: 0
   m_SpriteSortPoint: 0
---- !u!50 &3951280190561447455
+--- !u!50 &2084275844800580024
 Rigidbody2D:
   serializedVersion: 4
   m_ObjectHideFlags: 0
   m_CorrespondingSourceObject: {fileID: 0}
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
-  m_GameObject: {fileID: 5508245818244581766}
+  m_GameObject: {fileID: 2084275844800580026}
   m_BodyType: 0
   m_Simulated: 1
   m_UseFullKinematicContacts: 0
-  m_UseAutoMass: 1
+  m_UseAutoMass: 0
-  m_Mass: 5
+  m_Mass: 10
   m_LinearDrag: 0
   m_AngularDrag: 0.05
   m_GravityScale: 0
@@ -104,19 +106,49 @@ Rigidbody2D:
   m_SleepingMode: 1
   m_CollisionDetection: 0
   m_Constraints: 0
---- !u!58 &5758426961102176851
+--- !u!58 &2084275844800580023
 CircleCollider2D:
   m_ObjectHideFlags: 0
   m_CorrespondingSourceObject: {fileID: 0}
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
-  m_GameObject: {fileID: 5508245818244581766}
+  m_GameObject: {fileID: 2084275844800580026}
   m_Enabled: 1
   m_Density: 1
   m_Material: {fileID: 0}
-  m_IsTrigger: 0
+  m_IsTrigger: 1
   m_UsedByEffector: 0
   m_UsedByComposite: 0
   m_Offset: {x: 0, y: 0}
   serializedVersion: 2
   m_Radius: 0.5
+--- !u!114 &2084275844800580025
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 2084275844800580026}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: d16f17bda197c324f8b088f106c66c5c, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  isStatic: 1
+  positionInList: 0
+--- !u!114 &3271020097140099258
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 2084275844800580026}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 2f86d0ffd697a6046a85ea2885566da9, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  absorbedParticles: 0
+  absorbedMass: 0
+  scaleOnMass: 1
+  syncMass: 1

Assets/Prefabs/BlackHole.prefab.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: d810808c92b542d418721ca53dca1fee
+guid: d2ff0823532914e4a8f5ecd0efc2a146
 PrefabImporter:
   externalObjects: {}
   userData: 

Assets/Prefabs/MainCamera.prefab

@@ -98,7 +98,9 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 6c6157b8c0c98584db4becc892a8f6fd, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
-  prefab: {fileID: 5473375028011702754, guid: e73d8e05bd7498c4a80a63094f4594a8, type: 3}
+  prefabToSpawn: {fileID: 5473375028011702754, guid: e73d8e05bd7498c4a80a63094f4594a8,
+    type: 3}
+  mouseButton: 0
 --- !u!114 &1504932583
 MonoBehaviour:
   m_ObjectHideFlags: 0
@@ -111,7 +113,7 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 45a8a9da7e5b8734eb709105fd6e30e1, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
-  zoomMultiplier: 1
+  zoomMultiplier: 3
   zoomAxisName: MouseWheel
 --- !u!114 &1504932587
 MonoBehaviour:
@@ -125,3 +127,4 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: faf7dfc2fa2059f4a96e4a134b4ef2ab, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  axisName: MouseLeft

Assets/Prefabs/Nothing.prefab

@@ -1,32 +0,0 @@
-%YAML 1.1
-%TAG !u! tag:unity3d.com,2011:
---- !u!1 &6786529680537240613
-GameObject:
-  m_ObjectHideFlags: 0
-  m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInstance: {fileID: 0}
-  m_PrefabAsset: {fileID: 0}
-  serializedVersion: 6
-  m_Component:
-  - component: {fileID: 7085311716076432966}
-  m_Layer: 0
-  m_Name: Nothing
-  m_TagString: Untagged
-  m_Icon: {fileID: 0}
-  m_NavMeshLayer: 0
-  m_StaticEditorFlags: 0
-  m_IsActive: 1
---- !u!4 &7085311716076432966
-Transform:
-  m_ObjectHideFlags: 0
-  m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInstance: {fileID: 0}
-  m_PrefabAsset: {fileID: 0}
-  m_GameObject: {fileID: 6786529680537240613}
-  m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
-  m_LocalPosition: {x: 0, y: 0, z: 0}
-  m_LocalScale: {x: 1, y: 1, z: 1}
-  m_Children: []
-  m_Father: {fileID: 0}
-  m_RootOrder: 0
-  m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}

Assets/Prefabs/Particle.prefab

@@ -9,13 +9,13 @@ GameObject:
   serializedVersion: 6
   m_Component:
   - component: {fileID: 5473375028011702783}
+  - component: {fileID: 1061936008197383768}
   - component: {fileID: 5473375028011702782}
   - component: {fileID: 5473375028011702753}
   - component: {fileID: 5473375028011702752}
   - component: {fileID: 5473375028011702755}
-  - component: {fileID: 5319285082587561044}
   m_Layer: 0
-  m_Name: Gravitation Object
+  m_Name: Particle
   m_TagString: Untagged
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
@@ -29,13 +29,31 @@ Transform:
   m_PrefabAsset: {fileID: 0}
   m_GameObject: {fileID: 5473375028011702754}
   m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
-  m_LocalPosition: {x: -2, y: 0.88, z: 0}
+  m_LocalPosition: {x: 0, y: 0, z: 0}
   m_LocalScale: {x: 1, y: 1, z: 1}
   m_Children:
   - {fileID: 851405983337701308}
   m_Father: {fileID: 0}
   m_RootOrder: 0
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
+--- !u!114 &1061936008197383768
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 5473375028011702754}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 14169e6aef16b684f869320425c986ab, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  rigidbody: {fileID: 0}
+  gravitation: {fileID: 0}
+  gameController: {fileID: 0}
+  merger: {fileID: 0}
+  particleCollider: {fileID: 0}
+  mergeCollider: {fileID: 0}
 --- !u!50 &5473375028011702782
 Rigidbody2D:
   serializedVersion: 4
@@ -135,49 +153,8 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: d16f17bda197c324f8b088f106c66c5c, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  isStatic: 0
   positionInList: 0
---- !u!114 &5319285082587561044
-MonoBehaviour:
-  m_ObjectHideFlags: 0
-  m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInstance: {fileID: 0}
-  m_PrefabAsset: {fileID: 0}
-  m_GameObject: {fileID: 5473375028011702754}
-  m_Enabled: 1
-  m_EditorHideFlags: 0
-  m_Script: {fileID: 11500000, guid: 8cb7610d172100841907b194dece1565, type: 3}
-  m_Name: 
-  m_EditorClassIdentifier: 
-  disappearAfter: 5
-  colorCurve:
-    serializedVersion: 2
-    key0: {r: 1, g: 0, b: 0, a: 0}
-    key1: {r: 1, g: 1, b: 1, a: 1}
-    key2: {r: 1, g: 0.82856506, b: 0.82856506, a: 0}
-    key3: {r: 0, g: 0, b: 0, a: 0}
-    key4: {r: 0, g: 0, b: 0, a: 0}
-    key5: {r: 0, g: 0, b: 0, a: 0}
-    key6: {r: 0, g: 0, b: 0, a: 0}
-    key7: {r: 0, g: 0, b: 0, a: 0}
-    ctime0: 0
-    ctime1: 65535
-    ctime2: 21203
-    ctime3: 0
-    ctime4: 0
-    ctime5: 0
-    ctime6: 0
-    ctime7: 0
-    atime0: 0
-    atime1: 65535
-    atime2: 0
-    atime3: 0
-    atime4: 0
-    atime5: 0
-    atime6: 0
-    atime7: 0
-    m_Mode: 0
-    m_NumColorKeys: 2
-    m_NumAlphaKeys: 2
 --- !u!1 &8635663089806839545
 GameObject:
   m_ObjectHideFlags: 0
@@ -238,6 +215,4 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 1010c8363cc1ebd4e9c1808f9a2737e2, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
-  mergeIntoPrefab: {fileID: 5508245818244581766, guid: 81be647bed73a164cb47269e43863cac,
+  particle: {fileID: 0}
-    type: 3}
-  setMergedMassFromTotal: 1

Assets/Prefabs/Sun.prefab.meta

@@ -1,7 +0,0 @@
-fileFormatVersion: 2
-guid: 81be647bed73a164cb47269e43863cac
-PrefabImporter:
-  externalObjects: {}
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: 

Assets/Scenes/Game.unity

@@ -121,6 +121,105 @@ NavMeshSettings:
     debug:
       m_Flags: 0
   m_NavMeshData: {fileID: 0}
+--- !u!1001 &769317669
+PrefabInstance:
+  m_ObjectHideFlags: 0
+  serializedVersion: 2
+  m_Modification:
+    m_TransformParent: {fileID: 0}
+    m_Modifications:
+    - target: {fileID: 2084275844800580026, guid: d2ff0823532914e4a8f5ecd0efc2a146,
+        type: 3}
+      propertyPath: m_Name
+      value: BlackHole
+      objectReference: {fileID: 0}
+    - target: {fileID: 2084275844800580021, guid: d2ff0823532914e4a8f5ecd0efc2a146,
+        type: 3}
+      propertyPath: m_LocalPosition.x
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 2084275844800580021, guid: d2ff0823532914e4a8f5ecd0efc2a146,
+        type: 3}
+      propertyPath: m_LocalPosition.y
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 2084275844800580021, guid: d2ff0823532914e4a8f5ecd0efc2a146,
+        type: 3}
+      propertyPath: m_LocalPosition.z
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 2084275844800580021, guid: d2ff0823532914e4a8f5ecd0efc2a146,
+        type: 3}
+      propertyPath: m_LocalRotation.x
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 2084275844800580021, guid: d2ff0823532914e4a8f5ecd0efc2a146,
+        type: 3}
+      propertyPath: m_LocalRotation.y
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 2084275844800580021, guid: d2ff0823532914e4a8f5ecd0efc2a146,
+        type: 3}
+      propertyPath: m_LocalRotation.z
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 2084275844800580021, guid: d2ff0823532914e4a8f5ecd0efc2a146,
+        type: 3}
+      propertyPath: m_LocalRotation.w
+      value: 1
+      objectReference: {fileID: 0}
+    - target: {fileID: 2084275844800580021, guid: d2ff0823532914e4a8f5ecd0efc2a146,
+        type: 3}
+      propertyPath: m_RootOrder
+      value: 1
+      objectReference: {fileID: 0}
+    - target: {fileID: 2084275844800580021, guid: d2ff0823532914e4a8f5ecd0efc2a146,
+        type: 3}
+      propertyPath: m_LocalEulerAnglesHint.x
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 2084275844800580021, guid: d2ff0823532914e4a8f5ecd0efc2a146,
+        type: 3}
+      propertyPath: m_LocalEulerAnglesHint.y
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 2084275844800580021, guid: d2ff0823532914e4a8f5ecd0efc2a146,
+        type: 3}
+      propertyPath: m_LocalEulerAnglesHint.z
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 2084275844800580021, guid: d2ff0823532914e4a8f5ecd0efc2a146,
+        type: 3}
+      propertyPath: m_LocalScale.x
+      value: 2
+      objectReference: {fileID: 0}
+    - target: {fileID: 2084275844800580021, guid: d2ff0823532914e4a8f5ecd0efc2a146,
+        type: 3}
+      propertyPath: m_LocalScale.y
+      value: 2
+      objectReference: {fileID: 0}
+    - target: {fileID: 2084275844800580024, guid: d2ff0823532914e4a8f5ecd0efc2a146,
+        type: 3}
+      propertyPath: m_Mass
+      value: 7
+      objectReference: {fileID: 0}
+    - target: {fileID: 2084275844800580023, guid: d2ff0823532914e4a8f5ecd0efc2a146,
+        type: 3}
+      propertyPath: m_Radius
+      value: 0.5
+      objectReference: {fileID: 0}
+    - target: {fileID: 3271020097140099258, guid: d2ff0823532914e4a8f5ecd0efc2a146,
+        type: 3}
+      propertyPath: absorbedParticles
+      value: 7
+      objectReference: {fileID: 0}
+    - target: {fileID: 3271020097140099258, guid: d2ff0823532914e4a8f5ecd0efc2a146,
+        type: 3}
+      propertyPath: absorbedMass
+      value: 7
+      objectReference: {fileID: 0}
+    m_RemovedComponents: []
+  m_SourcePrefab: {fileID: 100100000, guid: d2ff0823532914e4a8f5ecd0efc2a146, type: 3}
 --- !u!1001 &1803533283597936005
 PrefabInstance:
   m_ObjectHideFlags: 0
@@ -188,6 +287,11 @@ PrefabInstance:
       propertyPath: m_LocalEulerAnglesHint.z
       value: 0
       objectReference: {fileID: 0}
+    - target: {fileID: 4937878819460165300, guid: bf08d766b6e86cf4a8773489143ab2d5,
+        type: 3}
+      propertyPath: gravitationConstant
+      value: 2
+      objectReference: {fileID: 0}
     m_RemovedComponents: []
   m_SourcePrefab: {fileID: 100100000, guid: bf08d766b6e86cf4a8773489143ab2d5, type: 3}
 --- !u!1001 &9221969453494073200
@@ -240,7 +344,7 @@ PrefabInstance:
     - target: {fileID: 9221969453073420272, guid: 6baf9ec6ad712d940a83a3bf6ae3e6b1,
         type: 3}
       propertyPath: m_RootOrder
-      value: 1
+      value: 2
       objectReference: {fileID: 0}
     - target: {fileID: 9221969453073420272, guid: 6baf9ec6ad712d940a83a3bf6ae3e6b1,
         type: 3}
@@ -257,10 +361,9 @@ PrefabInstance:
       propertyPath: m_LocalEulerAnglesHint.z
       value: 0
       objectReference: {fileID: 0}
-    - target: {fileID: 1504932582, guid: 6baf9ec6ad712d940a83a3bf6ae3e6b1, type: 3}
+    - target: {fileID: 1504932587, guid: 6baf9ec6ad712d940a83a3bf6ae3e6b1, type: 3}
-      propertyPath: prefabToSpawn
+      propertyPath: axisName
-      value: 
+      value: MouseMiddle
-      objectReference: {fileID: 5473375028011702754, guid: e73d8e05bd7498c4a80a63094f4594a8,
+      objectReference: {fileID: 0}
-        type: 3}
     m_RemovedComponents: []
   m_SourcePrefab: {fileID: 100100000, guid: 6baf9ec6ad712d940a83a3bf6ae3e6b1, type: 3}

Assets/XR.meta

@@ -1,8 +0,0 @@
-fileFormatVersion: 2
-guid: dcd4e7f566b6b1f49964b0b51c681ac6
-folderAsset: yes
-DefaultImporter:
-  externalObjects: {}
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: 

Assets/XR/XRGeneralSettings.asset

@@ -1,47 +0,0 @@
-%YAML 1.1
-%TAG !u! tag:unity3d.com,2011:
---- !u!114 &11400000
-MonoBehaviour:
-  m_ObjectHideFlags: 0
-  m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInstance: {fileID: 0}
-  m_PrefabAsset: {fileID: 0}
-  m_GameObject: {fileID: 0}
-  m_Enabled: 1
-  m_EditorHideFlags: 0
-  m_Script: {fileID: 11500000, guid: d2dc886499c26824283350fa532d087d, type: 3}
-  m_Name: XRGeneralSettings
-  m_EditorClassIdentifier: 
-  Keys: 01000000
-  Values:
-  - {fileID: 8859528010114943273}
---- !u!114 &7854906144317399671
-MonoBehaviour:
-  m_ObjectHideFlags: 0
-  m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInstance: {fileID: 0}
-  m_PrefabAsset: {fileID: 0}
-  m_GameObject: {fileID: 0}
-  m_Enabled: 1
-  m_EditorHideFlags: 0
-  m_Script: {fileID: 11500000, guid: f4c3631f5e58749a59194e0cf6baf6d5, type: 3}
-  m_Name: Standalone Loaders
-  m_EditorClassIdentifier: 
-  m_RequiresSettingsUpdate: 0
-  m_AutomaticLoading: 0
-  m_AutomaticRunning: 0
-  m_Loaders: []
---- !u!114 &8859528010114943273
-MonoBehaviour:
-  m_ObjectHideFlags: 0
-  m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInstance: {fileID: 0}
-  m_PrefabAsset: {fileID: 0}
-  m_GameObject: {fileID: 0}
-  m_Enabled: 1
-  m_EditorHideFlags: 0
-  m_Script: {fileID: 11500000, guid: d236b7d11115f2143951f1e14045df39, type: 3}
-  m_Name: Standalone Settings
-  m_EditorClassIdentifier: 
-  m_LoaderManagerInstance: {fileID: 7854906144317399671}
-  m_InitManagerOnStart: 1

Assets/XR/XRGeneralSettings.asset.meta

@@ -1,8 +0,0 @@
-fileFormatVersion: 2
-guid: 7c8c2f042ca8bcf468405a9dff7f1571
-NativeFormatImporter:
-  externalObjects: {}
-  mainObjectFileID: 0
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: 

ProjectSettings/InputManager.asset

@@ -92,7 +92,7 @@ InputManager:
     negativeButton: 
     positiveButton: mouse 2
     altNegativeButton: 
-    altPositiveButton: w
+    altPositiveButton: space
     gravity: 0
     dead: 0
     sensitivity: 0.1