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added comments to some functions

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This commit is contained in:
Peter Maloney
2015-07-16 11:53:27 +02:00
parent a861362605
commit 91e04b80f8
1 changed files with 10 additions and 0 deletions
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10
technic/machines/other/anchor.lua
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@ -2,6 +2,9 @@ local S = technic.getter
local desc = S("Administrative World Anchor") local desc = S("Administrative World Anchor")
-- pos - position of the anchor node
-- meta - contains "radius"
-- return table of positions, one position per block
local function compute_forceload_positions(pos, meta) local function compute_forceload_positions(pos, meta)
local radius = meta:get_int("radius") local radius = meta:get_int("radius")
local minpos = vector.subtract(pos, vector.new(radius, radius, radius)) local minpos = vector.subtract(pos, vector.new(radius, radius, radius))
@ -23,11 +26,15 @@ local function compute_forceload_positions(pos, meta)
return flposes return flposes
end end
-- meta - contains "forceloaded", which is a serialized table of positions that are currently forceloaded
-- return table of positions that are currently forceloaded
local function currently_forceloaded_positions(meta) local function currently_forceloaded_positions(meta)
local ser = meta:get_string("forceloaded") local ser = meta:get_string("forceloaded")
return ser == "" and {} or minetest.deserialize(ser) return ser == "" and {} or minetest.deserialize(ser)
end end
-- turns off forceloading for all positions in the table
-- meta - contains "forceloaded" (used by currently_forceloaded_positions)
local function forceload_off(meta) local function forceload_off(meta)
local flposes = currently_forceloaded_positions(meta) local flposes = currently_forceloaded_positions(meta)
meta:set_string("forceloaded", "") meta:set_string("forceloaded", "")
@ -36,6 +43,9 @@ local function forceload_off(meta)
end end
end end
-- computes the forceload positions (using compute_forceload_positions) and tries to force load all of them, and records them in meta "forcedloaded"
-- pos - position of the anchor node
-- meta - contains "radius" (to be read) and "forceloaded" (to be written)
local function forceload_on(pos, meta) local function forceload_on(pos, meta)
local want_flposes = compute_forceload_positions(pos, meta) local want_flposes = compute_forceload_positions(pos, meta)
local have_flposes = {} local have_flposes = {}