Add merge without conditions

Assets/Components/Gravitation.cs

@@ -7,11 +7,10 @@ public class Gravitation : MonoBehaviour
 {    
     [Header("Forces")]
     protected Vector3 appliedForce;
-    protected float forcesIntensity;
 
     [Header("Internals")]
-    public static List<Gravitation> simulatedObjects;
     public int positionInList;
+    public static List<Gravitation> simulatedObjects;
 
     [Header("References")]
     protected new Rigidbody2D rigidbody;
@@ -28,7 +27,7 @@ public class Gravitation : MonoBehaviour
         }
     }
 
-    private void Awake() {
+    private void OnEnable() {
         if(simulatedObjects == null) {
             simulatedObjects = new List<Gravitation>();
         }
@@ -36,12 +35,15 @@ public class Gravitation : MonoBehaviour
         simulatedObjects.Add(this);
     }
 
+    private void OnDisable() {
+        simulatedObjects.Remove(this);
+    }
+
     private void Start()
     {
         rigidbody = GetComponent<Rigidbody2D>();
         gameController = GameObject.Find("GameController").GetComponent<GameController>();
         appliedForce = new Vector3(0f, 0f, 0f);
-        forcesIntensity = 0f;
     }
 
     // O(n²)
@@ -53,16 +55,9 @@ public class Gravitation : MonoBehaviour
             float force = gameController.gravitationConstant * this.mass * other.mass / Mathf.Pow(distance, 2);
             Vector3 direction = (other.transform.position - this.transform.position).normalized;
             this.appliedForce += direction * force;
-            this.forcesIntensity += force;
             other.appliedForce -= direction * force;
-            other.forcesIntensity += force;
         }
         rigidbody.AddForce(appliedForce);
-        if(forcesIntensity >= 5f) {
-            GetComponent<SpriteRenderer>().color = Color.yellow;
-        }
-
         appliedForce = new Vector3(0, 0, 0);
-        forcesIntensity = 0f;
     }
 }

Assets/Components/Merge.cs

@@ -0,0 +1,52 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+[RequireComponent(typeof(CircleCollider2D))]
+public class Merge : MonoBehaviour
+{
+    [Header("Config")]
+    public GameObject mergeIntoPrefab;
+
+    [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>();
+        mergeables.Add(otherMerge);
+
+        if(CanMerge()) DoMerge();
+    }
+
+    private void OnTriggerExit2D(Collider2D other) {
+        Merge otherMerge = other.GetComponent<Merge>();
+        mergeables.Remove(otherMerge);
+    }
+
+    protected bool CanMerge() {
+        return false;
+    }
+
+    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) {
+            Rigidbody2D mergedBody = merged.GetComponentInParent<Rigidbody2D>();
+            if(mergedBody != null) {
+                mergedInfo.mergedMass += mergedBody.mass;
+            }
+            Destroy(merged.transform.parent);
+        }
+    }
+}

Assets/Components/Merge.cs.meta

@@ -0,0 +1,11 @@
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+MonoImporter:
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Assets/Components/MergedInfo.cs

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

Assets/Components/MergedInfo.cs.meta

@@ -0,0 +1,11 @@
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Assets/Prefabs/Gravitation Object.prefab

@@ -13,6 +13,7 @@ GameObject:
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   - component: {fileID: 5473375028011702752}
   - component: {fileID: 5473375028011702755}
+  - component: {fileID: 720206987848026506}
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   m_Name: Gravitation Object
   m_TagString: Untagged
@@ -134,3 +135,17 @@ MonoBehaviour:
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   m_EditorClassIdentifier: 
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Assets/Scenes/Game.unity

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