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minetest_game/mods/env_sounds/init.lua
2020-07-16 23:26:13 +02:00

113 lines
2.4 KiB
Lua

-- Parameters
-- Node search radius around player
local radius = 8
local allsounds = {
["env_sounds_water"] = {
trigger = {"default:water_flowing", "default:river_water_flowing"},
base_volume = 0.04,
max_volume = 0.4,
per_node = 0.004,
},
["env_sounds_lava"] = {
trigger = {"default:lava_source", "default:lava_flowing"},
base_volume = 0,
max_volume = 0.6,
per_node = {
["default:lava_source"] = 0.008,
["default:lava_flowing"] = 0.002,
},
},
}
if minetest.settings:get_bool("river_source_sounds") then
table.insert(allsounds["env_sounds_water"].trigger,
"default:river_water_source")
end
-- Cache the union of all trigger nodes
local cache_triggers = {}
for sound, def in pairs(allsounds) do
for _, name in ipairs(def.trigger) do
table.insert(cache_triggers, name)
end
end
-- Update sound for player
local function update_sound(player)
local player_name = player:get_player_name()
local ppos = player:get_pos()
ppos = vector.add(ppos, player:get_properties().eye_height)
local areamin = vector.subtract(ppos, radius)
local areamax = vector.add(ppos, radius)
local pos = minetest.find_nodes_in_area(areamin, areamax, cache_triggers, true)
if next(pos) == nil then -- If table empty
return
end
for sound, def in pairs(allsounds) do
-- Find average position
local posav = {0, 0, 0}
local count = 0
for _, name in ipairs(def.trigger) do
if pos[name] then
for _, p in ipairs(pos[name]) do
posav[1] = posav[1] + p.x
posav[2] = posav[2] + p.y
posav[3] = posav[3] + p.z
end
count = count + #pos[name]
end
end
if count > 0 then
posav = vector.new(posav[1] / count, posav[2] / count,
posav[3] / count)
-- Calculate gain
local gain = def.base_volume
if type(def.per_node) == 'table' then
for name, multiplier in pairs(def.per_node) do
if pos[name] then
gain = gain + #pos[name] * multiplier
end
end
else
gain = gain + count * def.per_node
end
gain = math.min(gain, def.max_volume)
minetest.sound_play(sound, {
pos = posav,
to_player = player_name,
gain = gain,
}, true)
end
end
end
-- Update sound when player joins
minetest.register_on_joinplayer(function(player)
update_sound(player)
end)
-- Cyclic sound update
local function cyclic_update()
for _, player in pairs(minetest.get_connected_players()) do
update_sound(player)
end
minetest.after(3.5, cyclic_update)
end
minetest.after(0, cyclic_update)