diff --git a/include/doorkeeper/components/pixelconv.hpp b/include/doorkeeper/components/pixelconv.hpp
index 5851db7..6c63c02 100644
--- a/include/doorkeeper/components/pixelconv.hpp
+++ b/include/doorkeeper/components/pixelconv.hpp
@@ -35,6 +35,8 @@ namespace dk {
 		PixelConv ( MapTypes parType, const coords& parTileSize );
 
 		virtual coords to_pixel ( const coords& parFrom ) const = 0;
+		virtual coords pick_tile ( const coords& parPixelPoint ) const = 0;
+
 		MapTypes map_type ( void ) const;
 		const coords& tile_size ( void ) const;
 
@@ -53,6 +55,7 @@ namespace dk {
 		virtual ~PixelConvSquare ( void ) noexcept = default;
 
 		virtual coords to_pixel ( const coords& parFrom ) const;
+		virtual coords pick_tile ( const coords& parPixelPoint ) const;
 	};
 
 	class PixelConvDiamond : public PixelConv<2> {
@@ -65,6 +68,7 @@ namespace dk {
 		virtual ~PixelConvDiamond ( void ) noexcept = default;
 
 		virtual coords to_pixel ( const coords& parFrom ) const;
+		virtual coords pick_tile ( const coords& parPixelPoint ) const;
 
 	protected:
 		const coords m_ratio;
@@ -81,6 +85,10 @@ namespace dk {
 		virtual ~PixelConvHex ( void ) noexcept = default;
 
 		virtual coords to_pixel ( const coords& parFrom ) const;
+		virtual coords pick_tile ( const coords& parPixelPoint ) const;
+
+	private:
+		const CoordinateScalarType m_first_reentr;
 	};
 
 	template <typename T, typename T1>
diff --git a/include/doorkeeper/implem/pixelconv.inl b/include/doorkeeper/implem/pixelconv.inl
index 960dd53..0093d13 100644
--- a/include/doorkeeper/implem/pixelconv.inl
+++ b/include/doorkeeper/implem/pixelconv.inl
@@ -71,4 +71,9 @@ namespace dk {
 	auto PixelConvSquare<D>::to_pixel (const coords& parFrom) const -> coords {
 		return parFrom * this->tile_size();
 	}
+
+	template <uint32_t D>
+	auto PixelConvSquare<D>::pick_tile (const coords& parPixelPoint) const -> coords {
+		return parPixelPoint / this->tile_size();
+	}
 } //namespace dk
diff --git a/src/pixelconv.cpp b/src/pixelconv.cpp
index b82cee2..80fbe5d 100644
--- a/src/pixelconv.cpp
+++ b/src/pixelconv.cpp
@@ -49,8 +49,14 @@ namespace dk {
 		}
 	}
 
+	auto PixelConvDiamond::pick_tile (const coords& parPixelPoint) const -> coords {
+		DK_ASSERT(false); //not implemented
+		return coords(0);
+	}
+
 	PixelConvHex::PixelConvHex (const coords& parTileSize, bool parFirstReentrant) :
-		base_class(MapType_Hex, parTileSize)
+		base_class(MapType_Hex, parTileSize),
+		m_first_reentr(parFirstReentrant ? 1 : 0)
 	{
 	}
 
@@ -58,4 +64,9 @@ namespace dk {
 		DK_ASSERT(false); //not implemented
 		return coords(0);
 	}
+
+	auto PixelConvHex::pick_tile (const coords& parPixelPoint) const -> coords {
+		DK_ASSERT(false); //not implemented
+		return coords(0);
+	}
 } //namespace dk