minetest_game/mods/default/functions.lua

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--
-- 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 = 0.2}
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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 = 0.25}
table.dig = table.dig or
{name = "default_dig_crumbly", gain = 0.4}
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table.dug = table.dug or
{name = "default_dirt_footstep", gain = 1.0}
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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 = 0.05}
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table.dug = table.dug or
{name = "default_sand_footstep", gain = 0.15}
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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_gravel_defaults(table)
table = table or {}
table.footstep = table.footstep or
{name = "default_gravel_footstep", gain = 0.25}
table.dig = table.dig or
{name = "default_gravel_dig", gain = 0.35}
table.dug = table.dug or
{name = "default_gravel_dug", gain = 1.0}
table.place = table.place or
{name = "default_place_node", gain = 1.0}
default.node_sound_defaults(table)
return table
end
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function default.node_sound_wood_defaults(table)
table = table or {}
table.footstep = table.footstep or
{name = "default_wood_footstep", gain = 0.15}
table.dig = table.dig or
{name = "default_dig_choppy", gain = 0.4}
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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 = 0.45}
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table.dug = table.dug or
{name = "default_grass_footstep", gain = 0.7}
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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 = 0.3}
table.dig = table.dig 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
function default.node_sound_ice_defaults(table)
table = table or {}
table.footstep = table.footstep or
{name = "default_ice_footstep", gain = 0.15}
table.dig = table.dig or
{name = "default_ice_dig", gain = 0.5}
table.dug = table.dug or
{name = "default_ice_dug", gain = 0.5}
default.node_sound_defaults(table)
return table
end
function default.node_sound_metal_defaults(table)
table = table or {}
table.footstep = table.footstep or
{name = "default_metal_footstep", gain = 0.2}
table.dig = table.dig or
{name = "default_dig_metal", gain = 0.5}
table.dug = table.dug or
{name = "default_dug_metal", gain = 0.5}
table.place = table.place or
{name = "default_place_node_metal", gain = 0.5}
default.node_sound_defaults(table)
return table
end
function default.node_sound_water_defaults(table)
table = table or {}
table.footstep = table.footstep or
{name = "default_water_footstep", gain = 0.2}
default.node_sound_defaults(table)
return table
end
function default.node_sound_snow_defaults(table)
table = table or {}
table.footstep = table.footstep or
{name = "default_snow_footstep", gain = 0.2}
table.dig = table.dig or
{name = "default_snow_footstep", gain = 0.3}
table.dug = table.dug or
{name = "default_snow_footstep", gain = 0.3}
table.place = table.place or
{name = "default_place_node", gain = 1.0}
default.node_sound_defaults(table)
return table
end
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--
-- Lavacooling
--
default.cool_lava = function(pos, node)
if node.name == "default:lava_source" then
minetest.set_node(pos, {name = "default:obsidian"})
else -- Lava flowing
minetest.set_node(pos, {name = "default:stone"})
end
minetest.sound_play("default_cool_lava",
{pos = pos, max_hear_distance = 16, gain = 0.2}, true)
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end
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if minetest.settings:get_bool("enable_lavacooling") ~= false then
minetest.register_abm({
label = "Lava cooling",
nodenames = {"default:lava_source", "default:lava_flowing"},
neighbors = {"group:cools_lava", "group:water"},
interval = 2,
chance = 2,
catch_up = false,
action = function(...)
default.cool_lava(...)
end,
})
end
--
-- Optimized helper to put all items in an inventory into a drops list
--
function default.get_inventory_drops(pos, inventory, drops)
local inv = minetest.get_meta(pos):get_inventory()
local n = #drops
for i = 1, inv:get_size(inventory) do
local stack = inv:get_stack(inventory, i)
if stack:get_count() > 0 then
drops[n+1] = stack:to_table()
n = n + 1
end
end
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
if minetest.get_node_light(pos) < 13 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" and
name ~= "default:dirt_with_grass" and
name ~= "default:dirt_with_dry_grass" and
name ~= "default:dirt_with_rainforest_litter" and
name ~= "default:dry_dirt" and
name ~= "default:dry_dirt_with_dry_grass" 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
if minetest.get_node_light(pos) < 13 then
return
end
minetest.set_node(pos, {name = "default:papyrus"})
return true
end
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minetest.register_abm({
label = "Grow cactus",
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nodenames = {"default:cactus"},
neighbors = {"group:sand"},
interval = 12,
chance = 83,
action = function(...)
default.grow_cactus(...)
end
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})
minetest.register_abm({
label = "Grow papyrus",
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nodenames = {"default:papyrus"},
-- Grows on the dirt and surface dirt nodes of the biomes papyrus appears in,
-- including the old savanna nodes.
-- 'default:dirt_with_grass' is here only because it was allowed before.
neighbors = {
"default:dirt",
"default:dirt_with_grass",
"default:dirt_with_dry_grass",
"default:dirt_with_rainforest_litter",
"default:dry_dirt",
"default:dry_dirt_with_dry_grass",
},
interval = 14,
chance = 71,
action = function(...)
default.grow_papyrus(...)
end
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})
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--
-- Dig upwards
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--
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
--
-- Fence registration helper
--
local fence_collision_extra = minetest.settings:get_bool("enable_fence_tall") and 3/8 or 0
function default.register_fence(name, def)
minetest.register_craft({
output = name .. " 4",
recipe = {
{ def.material, 'group:stick', def.material },
{ def.material, 'group:stick', def.material },
}
})
local fence_texture = "default_fence_overlay.png^" .. def.texture ..
"^default_fence_overlay.png^[makealpha:255,126,126"
-- Allow almost everything to be overridden
local default_fields = {
paramtype = "light",
drawtype = "nodebox",
node_box = {
type = "connected",
fixed = {-1/8, -1/2, -1/8, 1/8, 1/2, 1/8},
-- connect_top =
-- connect_bottom =
connect_front = {{-1/16, 3/16, -1/2, 1/16, 5/16, -1/8 },
{-1/16, -5/16, -1/2, 1/16, -3/16, -1/8 }},
connect_left = {{-1/2, 3/16, -1/16, -1/8, 5/16, 1/16},
{-1/2, -5/16, -1/16, -1/8, -3/16, 1/16}},
connect_back = {{-1/16, 3/16, 1/8, 1/16, 5/16, 1/2 },
{-1/16, -5/16, 1/8, 1/16, -3/16, 1/2 }},
connect_right = {{ 1/8, 3/16, -1/16, 1/2, 5/16, 1/16},
{ 1/8, -5/16, -1/16, 1/2, -3/16, 1/16}}
},
collision_box = {
type = "connected",
fixed = {-1/8, -1/2, -1/8, 1/8, 1/2 + fence_collision_extra, 1/8},
-- connect_top =
-- connect_bottom =
connect_front = {-1/8, -1/2, -1/2, 1/8, 1/2 + fence_collision_extra, -1/8},
connect_left = {-1/2, -1/2, -1/8, -1/8, 1/2 + fence_collision_extra, 1/8},
connect_back = {-1/8, -1/2, 1/8, 1/8, 1/2 + fence_collision_extra, 1/2},
connect_right = { 1/8, -1/2, -1/8, 1/2, 1/2 + fence_collision_extra, 1/8}
},
connects_to = {"group:fence", "group:wood", "group:tree", "group:wall"},
inventory_image = fence_texture,
wield_image = fence_texture,
tiles = {def.texture},
sunlight_propagates = true,
is_ground_content = false,
groups = {},
}
for k, v in pairs(default_fields) do
if def[k] == nil then
def[k] = v
end
end
-- Always add to the fence group, even if no group provided
def.groups.fence = 1
def.texture = nil
def.material = nil
minetest.register_node(name, def)
end
--
-- Fence rail registration helper
--
function default.register_fence_rail(name, def)
minetest.register_craft({
output = name .. " 16",
recipe = {
{ def.material, def.material },
{ "", ""},
{ def.material, def.material },
}
})
local fence_rail_texture = "default_fence_rail_overlay.png^" .. def.texture ..
"^default_fence_rail_overlay.png^[makealpha:255,126,126"
-- Allow almost everything to be overridden
local default_fields = {
paramtype = "light",
drawtype = "nodebox",
node_box = {
type = "connected",
fixed = {{-1/16, 3/16, -1/16, 1/16, 5/16, 1/16},
{-1/16, -3/16, -1/16, 1/16, -5/16, 1/16}},
-- connect_top =
-- connect_bottom =
connect_front = {{-1/16, 3/16, -1/2, 1/16, 5/16, -1/16},
{-1/16, -5/16, -1/2, 1/16, -3/16, -1/16}},
connect_left = {{-1/2, 3/16, -1/16, -1/16, 5/16, 1/16},
{-1/2, -5/16, -1/16, -1/16, -3/16, 1/16}},
connect_back = {{-1/16, 3/16, 1/16, 1/16, 5/16, 1/2 },
{-1/16, -5/16, 1/16, 1/16, -3/16, 1/2 }},
connect_right = {{ 1/16, 3/16, -1/16, 1/2, 5/16, 1/16},
{ 1/16, -5/16, -1/16, 1/2, -3/16, 1/16}}
},
collision_box = {
type = "connected",
fixed = {-1/8, -1/2, -1/8, 1/8, 1/2 + fence_collision_extra, 1/8},
-- connect_top =
-- connect_bottom =
connect_front = {-1/8, -1/2, -1/2, 1/8, 1/2 + fence_collision_extra, -1/8},
connect_left = {-1/2, -1/2, -1/8, -1/8, 1/2 + fence_collision_extra, 1/8},
connect_back = {-1/8, -1/2, 1/8, 1/8, 1/2 + fence_collision_extra, 1/2},
connect_right = { 1/8, -1/2, -1/8, 1/2, 1/2 + fence_collision_extra, 1/8}
},
connects_to = {"group:fence", "group:wall"},
inventory_image = fence_rail_texture,
wield_image = fence_rail_texture,
tiles = {def.texture},
sunlight_propagates = true,
is_ground_content = false,
groups = {},
}
for k, v in pairs(default_fields) do
if def[k] == nil then
def[k] = v
end
end
-- Always add to the fence group, even if no group provided
def.groups.fence = 1
def.texture = nil
def.material = nil
minetest.register_node(name, def)
end
--
-- Mese post registration helper
--
function default.register_mesepost(name, def)
minetest.register_craft({
output = name .. " 4",
recipe = {
{'', 'default:glass', ''},
{'default:mese_crystal', 'default:mese_crystal', 'default:mese_crystal'},
{'', def.material, ''},
}
})
local post_texture = def.texture .. "^default_mese_post_light_side.png^[makealpha:0,0,0"
local post_texture_dark = def.texture .. "^default_mese_post_light_side_dark.png^[makealpha:0,0,0"
-- Allow almost everything to be overridden
local default_fields = {
wield_image = post_texture,
drawtype = "nodebox",
node_box = {
type = "fixed",
fixed = {
{-2 / 16, -8 / 16, -2 / 16, 2 / 16, 8 / 16, 2 / 16},
},
},
paramtype = "light",
tiles = {def.texture, def.texture, post_texture_dark, post_texture_dark, post_texture, post_texture},
use_texture_alpha = "opaque",
light_source = default.LIGHT_MAX,
sunlight_propagates = true,
is_ground_content = false,
groups = {choppy = 2, oddly_breakable_by_hand = 2, flammable = 2},
sounds = default.node_sound_wood_defaults(),
}
for k, v in pairs(default_fields) do
if def[k] == nil then
def[k] = v
end
end
def.texture = nil
def.material = nil
minetest.register_node(name, def)
end
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--
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-- Leafdecay
--
-- Prevent decay of placed leaves
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default.after_place_leaves = function(pos, placer, itemstack, pointed_thing)
if placer and placer:is_player() then
local node = minetest.get_node(pos)
node.param2 = 1
minetest.set_node(pos, node)
end
end
-- Leafdecay
local function leafdecay_after_destruct(pos, oldnode, def)
for _, v in pairs(minetest.find_nodes_in_area(vector.subtract(pos, def.radius),
vector.add(pos, def.radius), def.leaves)) do
local node = minetest.get_node(v)
local timer = minetest.get_node_timer(v)
if node.param2 ~= 1 and not timer:is_started() then
timer:start(math.random(20, 120) / 10)
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end
end
end
local movement_gravity = tonumber(
minetest.settings:get("movement_gravity")) or 9.81
local function leafdecay_on_timer(pos, def)
if minetest.find_node_near(pos, def.radius, def.trunks) then
return false
end
local node = minetest.get_node(pos)
local drops = minetest.get_node_drops(node.name)
for _, item in ipairs(drops) do
local is_leaf
for _, v in pairs(def.leaves) do
if v == item then
is_leaf = true
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end
end
if minetest.get_item_group(item, "leafdecay_drop") ~= 0 or
not is_leaf then
minetest.add_item({
x = pos.x - 0.5 + math.random(),
y = pos.y - 0.5 + math.random(),
z = pos.z - 0.5 + math.random(),
}, item)
end
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end
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minetest.remove_node(pos)
minetest.check_for_falling(pos)
-- spawn a few particles for the removed node
minetest.add_particlespawner({
amount = 8,
time = 0.001,
minpos = vector.subtract(pos, {x=0.5, y=0.5, z=0.5}),
maxpos = vector.add(pos, {x=0.5, y=0.5, z=0.5}),
minvel = vector.new(-0.5, -1, -0.5),
maxvel = vector.new(0.5, 0, 0.5),
minacc = vector.new(0, -movement_gravity, 0),
maxacc = vector.new(0, -movement_gravity, 0),
minsize = 0,
maxsize = 0,
node = node,
})
end
function default.register_leafdecay(def)
assert(def.leaves)
assert(def.trunks)
assert(def.radius)
for _, v in pairs(def.trunks) do
minetest.override_item(v, {
after_destruct = function(pos, oldnode)
leafdecay_after_destruct(pos, oldnode, def)
end,
})
end
for _, v in pairs(def.leaves) do
minetest.override_item(v, {
on_timer = function(pos)
leafdecay_on_timer(pos, def)
end,
})
end
end
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--
-- Convert default:dirt to something that fits the environment
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--
minetest.register_abm({
label = "Grass spread",
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nodenames = {"default:dirt"},
neighbors = {
"air",
"group:grass",
"group:dry_grass",
"default:snow",
},
interval = 6,
chance = 50,
catch_up = false,
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action = function(pos, node)
-- Check for darkness: night, shadow or under a light-blocking node
-- Returns if ignore above
local above = {x = pos.x, y = pos.y + 1, z = pos.z}
if (minetest.get_node_light(above) or 0) < 13 then
return
end
-- Look for spreading dirt-type neighbours
local p2 = minetest.find_node_near(pos, 1, "group:spreading_dirt_type")
if p2 then
local n3 = minetest.get_node(p2)
minetest.set_node(pos, {name = n3.name})
return
end
-- Else, any seeding nodes on top?
local name = minetest.get_node(above).name
-- Snow check is cheapest, so comes first
if name == "default:snow" then
minetest.set_node(pos, {name = "default:dirt_with_snow"})
elseif minetest.get_item_group(name, "grass") ~= 0 then
minetest.set_node(pos, {name = "default:dirt_with_grass"})
elseif minetest.get_item_group(name, "dry_grass") ~= 0 then
minetest.set_node(pos, {name = "default:dirt_with_dry_grass"})
end
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end
})
--
-- Grass and dry grass removed in darkness
--
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minetest.register_abm({
label = "Grass covered",
nodenames = {"group:spreading_dirt_type", "default:dry_dirt_with_dry_grass"},
interval = 8,
chance = 50,
catch_up = false,
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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
if node.name == "default:dry_dirt_with_dry_grass" then
minetest.set_node(pos, {name = "default:dry_dirt"})
else
minetest.set_node(pos, {name = "default:dirt"})
end
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end
end
})
--
-- Moss growth on cobble near water
--
local moss_correspondences = {
["default:cobble"] = "default:mossycobble",
["stairs:slab_cobble"] = "stairs:slab_mossycobble",
["stairs:stair_cobble"] = "stairs:stair_mossycobble",
["stairs:stair_inner_cobble"] = "stairs:stair_inner_mossycobble",
["stairs:stair_outer_cobble"] = "stairs:stair_outer_mossycobble",
["walls:cobble"] = "walls:mossycobble",
}
minetest.register_abm({
label = "Moss growth",
nodenames = {"default:cobble", "stairs:slab_cobble", "stairs:stair_cobble",
"stairs:stair_inner_cobble", "stairs:stair_outer_cobble",
"walls:cobble"},
neighbors = {"group:water"},
interval = 16,
chance = 200,
catch_up = false,
action = function(pos, node)
node.name = moss_correspondences[node.name]
if node.name then
minetest.set_node(pos, node)
end
end
})
--
-- Register a craft to copy the metadata of items
--
function default.register_craft_metadata_copy(ingredient, result)
minetest.register_craft({
type = "shapeless",
output = result,
recipe = {ingredient, result}
})
minetest.register_on_craft(function(itemstack, player, old_craft_grid, craft_inv)
if itemstack:get_name() ~= result then
return
end
local original
local index
for i = 1, #old_craft_grid do
if old_craft_grid[i]:get_name() == result then
original = old_craft_grid[i]
index = i
end
end
if not original then
return
end
local copymeta = original:get_meta():to_table()
itemstack:get_meta():from_table(copymeta)
-- put the book with metadata back in the craft grid
craft_inv:set_stack("craft", index, original)
end)
end
--
-- NOTICE: This method is not an official part of the API yet.
-- This method may change in future.
--
function default.can_interact_with_node(player, pos)
if player and player:is_player() then
if minetest.check_player_privs(player, "protection_bypass") then
return true
end
else
return false
end
local meta = minetest.get_meta(pos)
local owner = meta:get_string("owner")
if not owner or owner == "" or owner == player:get_player_name() then
return true
end
-- Is player wielding the right key?
local item = player:get_wielded_item()
if minetest.get_item_group(item:get_name(), "key") == 1 then
local key_meta = item:get_meta()
if key_meta:get_string("secret") == "" then
local key_oldmeta = item:get_metadata()
if key_oldmeta == "" or not minetest.parse_json(key_oldmeta) then
return false
end
key_meta:set_string("secret", minetest.parse_json(key_oldmeta).secret)
item:set_metadata("")
end
return meta:get_string("key_lock_secret") == key_meta:get_string("secret")
end
return false
end