Calling set_custom_data() on TileData is changing all TileData in TileMapLayer

[MrElfajar]

Tested versions

4.4.1.stable

System information

Android - Godot 4.4.1.stable

Issue description

If calling set_custom_data() is changing all TileData how to add or change custom data only for specific tiledata

Steps to reproduce

• Create TileMapLayer
• create tileset and create custom data
• from code get TileData by calling TileMapLayer.get_cell_tile_data()
• calling TileData.set_custom_data()
• All TileData custom data value in TileMapLayer is changed

Minimal reproduction project (MRP)

N/A

[Saver310]

You kind of can't as of right now.

[MrElfajar]

Because in 4.0 this didn't happen. I hope this get fixed.

[AThousandShips]

This is not a bug, the data is for the TileSet tile, not in the map, it is shared

This should be documented a bit more clearly though

[AThousandShips]

For the feature, please see:

• Allow custom data for individual tiles in a TileMap godot-proposals#6606

This issue should be for tracking improving the documentation