minetest_game/mods/default/functions.lua

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2013-05-19 18:43:04 +02:00
-- mods/default/functions.lua
--
-- Sounds
--
function default.node_sound_defaults(table)
table = table or {}
table.footstep = table.footstep or
{name = "", gain = 1.0}
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table.dug = table.dug or
{name = "default_dug_node", gain = 0.25}
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table.place = table.place or
{name = "default_place_node_hard", gain = 1.0}
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return table
end
function default.node_sound_stone_defaults(table)
table = table or {}
table.footstep = table.footstep or
{name = "default_hard_footstep", gain = 0.5}
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table.dug = table.dug or
{name = "default_hard_footstep", gain = 1.0}
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default.node_sound_defaults(table)
return table
end
function default.node_sound_dirt_defaults(table)
table = table or {}
table.footstep = table.footstep or
{name = "default_dirt_footstep", gain = 1.0}
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table.dug = table.dug or
{name = "default_dirt_footstep", gain = 1.5}
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table.place = table.place or
{name = "default_place_node", gain = 1.0}
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default.node_sound_defaults(table)
return table
end
function default.node_sound_sand_defaults(table)
table = table or {}
table.footstep = table.footstep or
{name = "default_sand_footstep", gain = 0.2}
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table.dug = table.dug or
{name = "default_sand_footstep", gain = 0.4}
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table.place = table.place or
{name = "default_place_node", gain = 1.0}
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default.node_sound_defaults(table)
return table
end
function default.node_sound_wood_defaults(table)
table = table or {}
table.footstep = table.footstep or
{name = "default_wood_footstep", gain = 0.5}
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table.dug = table.dug or
{name = "default_wood_footstep", gain = 1.0}
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default.node_sound_defaults(table)
return table
end
function default.node_sound_leaves_defaults(table)
table = table or {}
table.footstep = table.footstep or
{name = "default_grass_footstep", gain = 0.35}
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table.dug = table.dug or
{name = "default_grass_footstep", gain = 0.7}
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table.dig = table.dig or
{name = "default_dig_crumbly", gain = 0.4}
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table.place = table.place or
{name = "default_place_node", gain = 1.0}
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default.node_sound_defaults(table)
return table
end
function default.node_sound_glass_defaults(table)
table = table or {}
table.footstep = table.footstep or
{name = "default_glass_footstep", gain = 0.5}
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table.dug = table.dug or
{name = "default_break_glass", gain = 1.0}
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default.node_sound_defaults(table)
return table
end
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--
-- Lavacooling
--
default.cool_lava_source = function(pos)
minetest.set_node(pos, {name = "default:obsidian"})
minetest.sound_play("default_cool_lava",
{pos = pos, max_hear_distance = 16, gain = 0.25})
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end
default.cool_lava_flowing = function(pos)
minetest.set_node(pos, {name = "default:stone"})
minetest.sound_play("default_cool_lava",
{pos = pos, max_hear_distance = 16, gain = 0.25})
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end
minetest.register_abm({
nodenames = {"default:lava_flowing"},
neighbors = {"group:water"},
interval = 1,
chance = 2,
action = function(...)
default.cool_lava_flowing(...)
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end,
})
minetest.register_abm({
nodenames = {"default:lava_source"},
neighbors = {"group:water"},
interval = 1,
chance = 2,
action = function(...)
default.cool_lava_source(...)
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end,
})
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--
-- Papyrus and cactus growing
--
-- wrapping the functions in abm action is necessary to make overriding them possible
function default.grow_cactus(pos, node)
if node.param2 >= 4 then
return
end
pos.y = pos.y - 1
if minetest.get_item_group(minetest.get_node(pos).name, "sand") == 0 then
return
end
pos.y = pos.y + 1
local height = 0
while node.name == "default:cactus" and height < 4 do
height = height + 1
pos.y = pos.y + 1
node = minetest.get_node(pos)
end
if height == 4 or node.name ~= "air" then
return
end
minetest.set_node(pos, {name = "default:cactus"})
return true
end
function default.grow_papyrus(pos, node)
pos.y = pos.y - 1
local name = minetest.get_node(pos).name
if name ~= "default:dirt_with_grass" and name ~= "default:dirt" then
return
end
if not minetest.find_node_near(pos, 3, {"group:water"}) then
return
end
pos.y = pos.y + 1
local height = 0
while node.name == "default:papyrus" and height < 4 do
height = height + 1
pos.y = pos.y + 1
node = minetest.get_node(pos)
end
if height == 4 or node.name ~= "air" then
return
end
minetest.set_node(pos, {name = "default:papyrus"})
return true
end
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minetest.register_abm({
nodenames = {"default:cactus"},
neighbors = {"group:sand"},
interval = 50,
chance = 20,
action = function(...)
default.grow_cactus(...)
end
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})
minetest.register_abm({
nodenames = {"default:papyrus"},
neighbors = {"default:dirt", "default:dirt_with_grass"},
interval = 50,
chance = 20,
action = function(...)
default.grow_papyrus(...)
end
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})
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--
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-- dig upwards
--
function default.dig_up(pos, node, digger)
if digger == nil then return end
local np = {x = pos.x, y = pos.y + 1, z = pos.z}
local nn = minetest.get_node(np)
if nn.name == node.name then
minetest.node_dig(np, nn, digger)
end
end
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--
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-- Leafdecay
--
default.leafdecay_trunk_cache = {}
default.leafdecay_enable_cache = true
-- Spread the load of finding trunks
default.leafdecay_trunk_find_allow_accumulator = 0
minetest.register_globalstep(function(dtime)
local finds_per_second = 5000
default.leafdecay_trunk_find_allow_accumulator =
math.floor(dtime * finds_per_second)
end)
default.after_place_leaves = function(pos, placer, itemstack, pointed_thing)
local node = minetest.get_node(pos)
node.param2 = 1
minetest.set_node(pos, node)
end
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minetest.register_abm({
nodenames = {"group:leafdecay"},
neighbors = {"air", "group:liquid"},
-- A low interval and a high inverse chance spreads the load
interval = 2,
chance = 5,
action = function(p0, node, _, _)
--print("leafdecay ABM at "..p0.x..", "..p0.y..", "..p0.z..")")
local do_preserve = false
local d = minetest.registered_nodes[node.name].groups.leafdecay
if not d or d == 0 then
--print("not groups.leafdecay")
return
end
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local n0 = minetest.get_node(p0)
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if n0.param2 ~= 0 then
--print("param2 ~= 0")
return
end
local p0_hash = nil
if default.leafdecay_enable_cache then
p0_hash = minetest.hash_node_position(p0)
local trunkp = default.leafdecay_trunk_cache[p0_hash]
if trunkp then
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local n = minetest.get_node(trunkp)
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local reg = minetest.registered_nodes[n.name]
-- Assume ignore is a trunk, to make the thing
-- work at the border of the active area
if n.name == "ignore" or (reg and reg.groups.tree and
reg.groups.tree ~= 0) then
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--print("cached trunk still exists")
return
end
--print("cached trunk is invalid")
-- Cache is invalid
table.remove(default.leafdecay_trunk_cache, p0_hash)
end
end
if default.leafdecay_trunk_find_allow_accumulator <= 0 then
return
end
default.leafdecay_trunk_find_allow_accumulator =
default.leafdecay_trunk_find_allow_accumulator - 1
-- Assume ignore is a trunk, to make the thing
-- work at the border of the active area
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local p1 = minetest.find_node_near(p0, d, {"ignore", "group:tree"})
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if p1 then
do_preserve = true
if default.leafdecay_enable_cache then
--print("caching trunk")
-- Cache the trunk
default.leafdecay_trunk_cache[p0_hash] = p1
end
end
if not do_preserve then
-- Drop stuff other than the node itself
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local itemstacks = minetest.get_node_drops(n0.name)
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for _, itemname in ipairs(itemstacks) do
if minetest.get_item_group(n0.name, "leafdecay_drop") ~= 0 or
itemname ~= n0.name then
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local p_drop = {
x = p0.x - 0.5 + math.random(),
y = p0.y - 0.5 + math.random(),
z = p0.z - 0.5 + math.random(),
}
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minetest.add_item(p_drop, itemname)
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end
end
-- Remove node
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minetest.remove_node(p0)
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nodeupdate(p0)
end
end
})
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--
-- Grass growing
--
minetest.register_abm({
nodenames = {"default:dirt"},
interval = 2,
chance = 200,
action = function(pos, node)
local above = {x = pos.x, y = pos.y + 1, z = pos.z}
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local name = minetest.get_node(above).name
local nodedef = minetest.registered_nodes[name]
if nodedef and (nodedef.sunlight_propagates or nodedef.paramtype == "light") and
nodedef.liquidtype == "none" and
(minetest.get_node_light(above) or 0) >= 13 then
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if name == "default:snow" or name == "default:snowblock" then
minetest.set_node(pos, {name = "default:dirt_with_snow"})
else
minetest.set_node(pos, {name = "default:dirt_with_grass"})
end
end
end
})
minetest.register_abm({
nodenames = {"default:dirt_with_grass", "default:dirt_with_dry_grass"},
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interval = 2,
chance = 20,
action = function(pos, node)
local above = {x = pos.x, y = pos.y + 1, z = pos.z}
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local name = minetest.get_node(above).name
local nodedef = minetest.registered_nodes[name]
if name ~= "ignore" and nodedef and not ((nodedef.sunlight_propagates or
nodedef.paramtype == "light") and
nodedef.liquidtype == "none") then
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minetest.set_node(pos, {name = "default:dirt"})
end
end
})