bool getRoomPlacement()
	{
		// Cast a ray from screen mouse position to 3d world space
		Ray cameraRay = Camera.main.ScreenPointToRay(Input.mousePosition);
		RaycastHit cameraRayHit;

		// Check if the casted ray collides only floor, then highlight the rectangular area
		if(Physics.Raycast(cameraRay, out cameraRayHit, 1000, 1 << 8))
		{
			// Move the hover tile to collison point
			Vector3 hitPoint = cameraRayHit.point;
			Vector2 mouseOverCell = getTilePoints(hitPoint);

			// Calculate x and y distances, cell corner position
			int xDist;
			int yDist;
			xDist = (int)(mouseOverCell.x-selectedCell.x);
			yDist = (int)(mouseOverCell.y-selectedCell.y);
			RectanglePosition selectedCellPos = getRectPosition(xDist, yDist);

			// Position the hover tile
			if(selectedCellPos == RectanglePosition.LeftBottom)
			{
				hoverTile.transform.position = new Vector3 (selectedCell.x, 0F, selectedCell.y);
			}
			else if(selectedCellPos == RectanglePosition.RightBottom)
			{
				hoverTile.transform.position = new Vector3 (selectedCell.x+(float)xDist, 0F, selectedCell.y);
			}
			else if(selectedCellPos == RectanglePosition.LeftTop)
			{
				hoverTile.transform.position = new Vector3 (selectedCell.x, 0F, selectedCell.y+(float)yDist);
			}
			else
			{
				hoverTile.transform.position = new Vector3 (selectedCell.x+(float)xDist, 0F, selectedCell.y+(float)yDist);
			}

			// Scale the hover tile
			float xD = Mathf.Abs((float)xDist)+1F;
			float yD = Mathf.Abs((float)yDist)+1F;
			hoverTile.transform.localScale = new Vector3(xD,1F,yD);

			// Convert left bottom in vector two
			Vector2 leftBottomPosition = getTilePoints(hoverTile.transform.position);

			// Check if room purchase is valid
			if(isBlockSumZero(leftBottomPosition, xD, yD))
			{
				// Change color of hover tile to green
				hoverTileRenderer.material.SetColor("_Color", new Color(0F, 1.0F, 0F, 0.25F));

				// If mouse click, build the room
				if(Input.GetMouseButtonUp(0))
				{
					// If room size is minimum 2x2
					if(xD >= 2f && yD>=2f)
					{
						Vector2 lt = new Vector2(leftBottomPosition.x,leftBottomPosition.y+yD);
						Vector2 rb = new Vector2(leftBottomPosition.x+xD,leftBottomPosition.y);
						Vector2 rt = new Vector2(leftBottomPosition.x+xD,leftBottomPosition.y+yD);
						Room room = new Room(selectedRoomType,leftBottomPosition,lt,rb,rt,horizontalWall,verticalWall,transform);
						rooms.Add(room);

						// Update the floor map and room map
						setBlockValueFloorMap(leftBottomPosition, xD, yD, 2);
						setBlockValueRoomMap(leftBottomPosition, xD, yD, room.roomId);

						return true;
					}
					else
					{
						return false;
					}
				}
			}
			else
			{
				// Change color of hover tile to red
				hoverTileRenderer.material.SetColor("_Color", new Color(1.0F, 0F, 0F, 0.25F));
				return false;
			}
		}
		return false;
	}