minetest-mm/mods/biome_lib/block_queue_checks.lua

141 lines
4.7 KiB
Lua
Raw Normal View History

2021-05-16 11:33:49 +02:00
-- Iterate through the mapblock log,
-- populating blocks with new stuff in the process.
minetest.register_globalstep(function(dtime)
if not biome_lib.block_log[1] then return end -- the block log is empty
if math.random(100) > biome_lib.queue_ratio then return end
for s = 1, biome_lib.entries_per_step do
biome_lib.generate_block()
end
end)
-- Periodically wake-up the queue to give old blocks a chance to time-out
-- if the player isn't currently exploring (i.e. they're just playing in one area)
function biome_lib.wake_up_queue()
if #biome_lib.block_recheck_list > 1
and #biome_lib.block_log == 0 then
biome_lib.block_log[#biome_lib.block_log + 1] =
table.copy(biome_lib.block_recheck_list[#biome_lib.block_recheck_list])
biome_lib.block_recheck_list[#biome_lib.block_recheck_list] = nil
biome_lib.run_block_recheck_list = true
biome_lib.dbg("Woke-up the map queue to give old blocks a chance to time-out.", 3)
end
minetest.after(biome_lib.block_queue_wakeup_time, biome_lib.wake_up_queue)
end
biome_lib.wake_up_queue()
-- Play out the entire log all at once on shutdown
-- to prevent unpopulated map areas
local function format_time(t)
if t > 59999999 then
return os.date("!%M minutes and %S seconds", math.ceil(t/1000000))
else
return os.date("!%S seconds", math.ceil(t/1000000))
end
end
function biome_lib.check_remaining_time()
if minetest.get_us_time() > (biome_lib.shutdown_last_timestamp + 10000000) then -- report progress every 10s
biome_lib.shutdown_last_timestamp = minetest.get_us_time()
local entries_remaining = #biome_lib.block_log + #biome_lib.block_recheck_list
local total_purged = biome_lib.starting_count - entries_remaining
local elapsed_time = biome_lib.shutdown_last_timestamp - biome_lib.shutdown_start_time
biome_lib.dbg(string.format("%i entries, approximately %s remaining.",
entries_remaining, format_time(elapsed_time/total_purged * entries_remaining)))
end
end
--Purge the block log at shutdown
minetest.register_on_shutdown(function()
biome_lib.shutdown_start_time = minetest.get_us_time()
biome_lib.shutdown_last_timestamp = minetest.get_us_time()+1
biome_lib.starting_count = #biome_lib.block_log + #biome_lib.block_recheck_list
if biome_lib.starting_count == 0 then
return
end
biome_lib.dbg("Stand by, purging the mapblock log "..
"(there are "..biome_lib.starting_count.." entries) ...", 0)
while #biome_lib.block_log > 0 do
biome_lib.generate_block(true)
biome_lib.check_remaining_time()
end
if #biome_lib.block_recheck_list > 0 then
biome_lib.block_log = table.copy(biome_lib.block_recheck_list)
biome_lib.block_recheck_list = {}
while #biome_lib.block_log > 0 do
biome_lib.generate_block(true)
biome_lib.check_remaining_time()
end
end
biome_lib.dbg("Log purge completed after "..
format_time(minetest.get_us_time() - biome_lib.shutdown_start_time)..".", 0)
end)
-- "Record" the map chunks being generated by the core mapgen,
-- split into individual mapblocks to reduce lag
minetest.register_on_generated(function(minp, maxp, blockseed)
local timestamp = minetest.get_us_time()
for y = 0, 4 do
local miny = minp.y + y*16
if miny >= biome_lib.mapgen_elevation_limit.min
and (miny + 15) <= biome_lib.mapgen_elevation_limit.max then
for x = 0, 4 do
local minx = minp.x + x*16
for z = 0, 4 do
local minz = minp.z + z*16
local bmin = {x=minx, y=miny, z=minz}
local bmax = {x=minx + 15, y=miny + 15, z=minz + 15}
biome_lib.block_log[#biome_lib.block_log + 1] = { bmin, bmax, true, timestamp }
biome_lib.block_log[#biome_lib.block_log + 1] = { bmin, bmax, false, timestamp }
end
end
else
biome_lib.dbg("Did not enqueue mapblocks at elevation "..miny.."m, they're out of range of any generate_plant() calls.", 4)
end
end
biome_lib.run_block_recheck_list = true
end)
if biome_lib.debug_log_level >= 3 then
biome_lib.last_count = 0
function biome_lib.show_pending_block_count()
if biome_lib.last_count ~= #biome_lib.block_log then
biome_lib.dbg(string.format("Pending block counts - ready to process: %-8icurrently deferred: %i",
#biome_lib.block_log, #biome_lib.block_recheck_list), 3)
biome_lib.last_count = #biome_lib.block_log
biome_lib.queue_idle_flag = false
elseif not biome_lib.queue_idle_flag then
if #biome_lib.block_recheck_list > 0 then
biome_lib.dbg("Mapblock queue only contains blocks that can't yet be processed.", 3)
biome_lib.dbg("Idling the queue until new blocks arrive or the next wake-up call occurs.", 3)
else
biome_lib.dbg("Mapblock queue has run dry.", 3)
biome_lib.dbg("Idling the queue until new blocks arrive.", 3)
end
biome_lib.queue_idle_flag = true
end
minetest.after(1, biome_lib.show_pending_block_count)
end
biome_lib.show_pending_block_count()
end