Factorio Forums

Posted: **Fri Oct 02, 2015 2:31 pm**

Hello,

I try to build a combinator, which emits the ghosts in specific area as signals. My idea is to inital count the entites with find_entities_filtered and then modify the signal if ghosts are placed or removed. I listen to the following events:

Code: Select all

game.on_event(defines.events.on_built_entity,         place)
game.on_event(defines.events.on_robot_built_entity,   place)

game.on_event(defines.events.on_preplayer_mined_item, remove)
game.on_event(defines.events.on_robot_pre_mined,      remove)
game.on_event(defines.events.on_entity_died,          remove)

But neither when the ghosts times out nor if it is built by a robot or by hand I get an event for the removed ghost. Only if I remove it by hand the remove function is called. Do I miss an event or is no event triggered by the game?

Thanks,
Gerhard

Posted: **Sat Oct 03, 2015 11:39 am**

Well you've tried it yourself. Ghosts are strange.
Also, what about newly placed ghosts in area of your combinator? They wouldn't be tracked by it if you don't run find_entities_ on regular basis.

Posted: **Mon Oct 12, 2015 2:04 pm**

When a ghost entity is placed, there is an event, which can handle the update of such a combinator. The events for replaced ghosts or those which times out are missing.

Posted: **Mon Oct 12, 2015 2:10 pm**

gheift wrote:When a ghost entity is placed, there is an event, which can handle the update of such a combinator. The events for replaced ghosts or those which times out are missing.

When the ghost is placed you can fill a array (sorted by time-until-expires) and on_tick you check each ghost that would expire now/is already expired if it has been refreshed and if it has reset the timeout in the array, otherwise trigger the "event"

is there an event for manual destruction?

Posted: **Mon Oct 12, 2015 2:35 pm**

ratchetfreak wrote:is there an event for manual destruction?

When the ghost is removed by the player (via right click) an event is fired.

If the ghost is removed because a player or a robot has built the entity or a player places another building which overlaps with the ghost then no event is fired.

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