64 lines
1.2 KiB
Lua
64 lines
1.2 KiB
Lua
local metric_mapgen_events_count
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if minetest.get_modpath("monitoring") then
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metric_mapgen_events_count = monitoring.gauge(
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"jumpdrive_mapgen_events_count",
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"number of events in the mapgen cache"
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)
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end
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local events = {} -- list of {minp, maxp, time}
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-- update last mapgen event time
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minetest.register_on_generated(function(minp, maxp, seed)
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table.insert(events, {
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minp = minp,
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maxp = maxp,
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time = minetest.get_us_time()
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})
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end)
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-- cleanup
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local timer = 0
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minetest.register_globalstep(function(dtime)
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timer = timer + dtime
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if timer < 5 then return end
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timer=0
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local time = minetest.get_us_time()
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local delay_seconds = 20
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local copied_events = events
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events = {}
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local count = 0
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for _, event in ipairs(copied_events) do
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if event.time > (time - (delay_seconds * 1000000)) then
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-- still recent
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table.insert(events, event)
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count = count + 1
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end
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end
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if metric_mapgen_events_count then
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metric_mapgen_events_count.set(count)
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end
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end)
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-- true = mapgen recently active in that area
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jumpdrive.check_mapgen = function(pos)
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for _, event in ipairs(events) do
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if vector.distance(pos, event.minp) < 200 then
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return true
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end
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end
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return false
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end
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