Factorio Forums

There's a "selected" property in LuaPlayer (actually LuaControl), but, as far as I can tell, no event fires when this changes.

Perhaps add an on_selected_changed event, with event parameters specifying

• the player
• the newly selected item (or nil if deselecting)
• the previously selected item (or nil if not set)

This event would fire a bazillion times per game, though, possibly leading to bloat due to needing to log every event...

Logging every event? You mean with replays enabled?

Anyway, the data might already be recorded - to update the state of player.selected property.

For now, in my mod, I've added code to monitor for changes to player.selected in on_tick - so it's already possible, but a little ugly and inefficient compared to a dedicated event.

The event could potentially be despammed - so that a selection must persist for 500ms or 750ms before the event is fired.

It will certainly be less crufty than having a bunch of mods checking the selection state of all players via on_tick handlers.

Added for 0.15.