Factorio Forums

How can I check the pollution required to create a biter?

This says the biter prototype doesn't have a "pollution_to_join_attack" key: This says "data" is nil: I check the entity is an enemy unit elsewhere in the code.

The first approach is correct, but looking at the documentation it seems that that property is simple not exposed. So try asking here: viewtopic.php?t=47087 .

The reason why the second method doesn't work is because data is not exposed to runtime scripting, not even read only. you have to access variables through game (the event return is giving you a specific piece of data from the game table).

So your first method should be the correct way, but for whatever reason, the data isn't accessible. as eradicator said.