Added placing buildings

Assets/Scripts/Game/Buildings/BuildingManager.cs

@@ -0,0 +1,46 @@
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.UI;
+
+namespace Fruitomation.Game
+{
+    public class BuildingManager : MonoBehaviour
+    {
+        private class BuildingInfo
+        {
+            public BuildingInfo(BuildingBase b, RectTransform rt)
+            {
+                Building = b;
+                Rect = rt;
+            }
+
+            public BuildingBase Building { get; }
+            public RectTransform Rect { get; }
+        }
+
+        private bool[,] InhabitedCells { get; } = new bool[96, 49];
+        private List<BuildingInfo> Buildings { get; } = new();
+
+        public bool AddBuildingAt(Vector2Int position, GameObject prefab, bool updateCellMap = false)
+        {
+            GameObject go = Instantiate(prefab, transform);
+            BuildingInfo info = new
+            (
+                go.GetComponent<BuildingBase>(),
+                go.GetComponent<RectTransform>()
+            );
+
+            Vector2Int p0 = position * 40;
+            Vector2Int p1 = p0 + new Vector2Int(20, 100);
+            
+            Vector2 off0 = info.Building.SizeOnGrid - Vector2.one;
+            Vector2 off1 = off0 * 20;
+
+            info.Rect.sizeDelta = info.Building.SizeOnGrid * 40;
+            info.Rect.anchoredPosition = p1 + off1;
+
+            Buildings.Add(info);
+            return true;
+        }
+    }
+}

Assets/Scripts/Game/Buildings/BuildingManager.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 9b26cbb6d9a64e44ad6f1b2022ed62fe
+timeCreated: 1774967593

Assets/Scripts/UI/GameCursor.cs

@@ -19,6 +19,7 @@ namespace Fruitomation.UI
         [SerializeField] private RectTransform RectTransform;
         [SerializeField] private Image BuildingPreview;
         [SerializeField] private Image CursorImage;
+        [SerializeField] private BuildingManager BuildingManager;
         
         [Header("Dev")]
         [SerializeField] private GameObject BuildingPrefab;
@@ -156,6 +157,12 @@ namespace Fruitomation.UI
             Vector2 o1 = o0 * 20;
             Vector2 p4 = p3 + o1;
             BuildingPreview.rectTransform.anchoredPosition = p4;
+            
+            //
+            if (Input.GetMouseButtonDown(0))
+            {
+                BuildingManager.AddBuildingAt(p1, BuildingPrefab);
+            }
         }
     }
 }