Made buildings unable to overlap

Assets/Prefabs/Buildings/FanBuilding.prefab

@@ -12,6 +12,7 @@ GameObject:
   - component: {fileID: 3321531399837876958}
   - component: {fileID: 512124502862012575}
   - component: {fileID: 2938597077917375806}
+  - component: {fileID: -6667291122109179156}
   m_Layer: 0
   m_Name: FanBuilding
   m_TagString: Untagged
@@ -90,3 +91,48 @@ MonoBehaviour:
   m_FillOrigin: 0
   m_UseSpriteMesh: 0
   m_PixelsPerUnitMultiplier: 1
+--- !u!61 &-6667291122109179156
+BoxCollider2D:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 8624048914473773482}
+  m_Enabled: 1
+  m_Density: 1
+  m_Material: {fileID: 0}
+  m_IncludeLayers:
+    serializedVersion: 2
+    m_Bits: 0
+  m_ExcludeLayers:
+    serializedVersion: 2
+    m_Bits: 0
+  m_LayerOverridePriority: 0
+  m_ForceSendLayers:
+    serializedVersion: 2
+    m_Bits: 4294967295
+  m_ForceReceiveLayers:
+    serializedVersion: 2
+    m_Bits: 4294967295
+  m_ContactCaptureLayers:
+    serializedVersion: 2
+    m_Bits: 4294967295
+  m_CallbackLayers:
+    serializedVersion: 2
+    m_Bits: 4294967295
+  m_IsTrigger: 0
+  m_UsedByEffector: 0
+  m_UsedByComposite: 0
+  m_Offset: {x: 0, y: 0}
+  m_SpriteTilingProperty:
+    border: {x: 0, y: 0, z: 0, w: 0}
+    pivot: {x: 0, y: 0}
+    oldSize: {x: 0, y: 0}
+    newSize: {x: 0, y: 0}
+    adaptiveTilingThreshold: 0
+    drawMode: 0
+    adaptiveTiling: 0
+  m_AutoTiling: 0
+  serializedVersion: 2
+  m_Size: {x: 40, y: 120}
+  m_EdgeRadius: 0