How to detect, if entity is active?

[KaraUL!]

Hi all. i have some problem. I have any entity of "assembling-machine" type - chemical-plant e.g. I need to do some actions runtime (in control.lua), ONLY when my chemical plant is producing its recipe. I tried options

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entity.active

(it shows "true" both when plant is working or staying idle)
and

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entity.energy

(the same amount, it changes only when entity connects\disconnects electric net. i hoped entity.energy depends on current energy usage)

Yea, i know we can get access to input/output inventory of assembling machine, and every game tick check if result item has been produced. But i dont think its a good idea cause of high frequency checks. Also player can almost immediately take "result item" from output inventory using inserters, so this check will not be valid. I hope you have any ideas?solutions, thanks.

[Rseding91]

Factorio 0.12 adds a method: entity.iscrafting() that will tell you what you're after.

In 0.11 there's currently no way to tell if a machine is crafting or smelting something.

[KaraUL!]

Factorio 0.12 adds a method: entity.iscrafting() that will tell you what you're after.

In 0.11 there's currently no way to tell if a machine is crafting or smelting something.

Thanks, i ll check