Graphics/TileMap: Add support for isometric tilemaps

Former-commit-id: f89318c22ae2dcdab159f46dcfcbdb778af00ae6 [formerly 9912b85867bbb46cd785af9f3fe3a1dc72180149] [formerly a82344e574762f14805ea6c831a0a314cfe36a20 [formerly c234ec3cebd016381a38cd13f7d411511ae98164]]
Former-commit-id: d170f0897b77bf29f984a8ddf9e5b193d63a5e60 [formerly 54a8819656b3c626c1485dbf5ccc8f015ad005f4]
Former-commit-id: 0b0bf65c250219c29b27067b315a3735d8fbbd70

include/Nazara/Graphics/TileMap.inl

@@ -25,7 +25,8 @@ namespace Nz
 	m_tiles(mapSize.x * mapSize.y),
 	m_layers(materialCount),
 	m_mapSize(mapSize),
-	m_tileSize(tileSize)
+	m_tileSize(tileSize),
+	m_isometricModeEnabled(false)
 	{
 		NazaraAssert(m_tiles.size() != 0U, "Invalid map size");
 		NazaraAssert(m_tileSize.x != 0U && m_tileSize.y != 0U, "Invalid tile size");
@@ -108,6 +109,22 @@ namespace Nz
 			InvalidateInstanceData(invalidatedLayers);
 	}
 
+	/*!
+	* \brief Enable/Disable isometric mode
+	*
+	* If enabled, every odd line will overlap by half the tile size with the upper line
+	*
+	* \param isometric Should the isometric mode be enabled for this TileMap
+	*
+	* \see IsIsometricModeEnabled
+	*/
+	inline void TileMap::EnableIsometricMode(bool isometric)
+	{
+		m_isometricModeEnabled = isometric;
+
+		InvalidateInstanceData(0xFFFFFFFF);
+	}
+
 	/*!
 	* \brief Enable and sets the tile at position tilePos
 	*
@@ -387,6 +404,17 @@ namespace Nz
 		return m_tileSize;
 	}
 
+	/*!
+	* \brief Gets the actual state of the isometric mode
+	* \return True if the isometric mode is enabled
+	*
+	* \see EnableIsometricMode
+	*/
+	inline bool TileMap::IsIsometricModeEnabled() const
+	{
+		return m_isometricModeEnabled;
+	}
+
 	/*!
 	* \brief Sets a material of the TileMap
 	*