1 -- mods/default/functions.lua
7 function default.node_sound_defaults(table)
9 table.footstep = table.footstep or
10 {name = "", gain = 1.0}
11 table.dug = table.dug or
12 {name = "default_dug_node", gain = 0.25}
13 table.place = table.place or
14 {name = "default_place_node_hard", gain = 1.0}
18 function default.node_sound_stone_defaults(table)
20 table.footstep = table.footstep or
21 {name = "default_hard_footstep", gain = 0.3}
22 table.dug = table.dug or
23 {name = "default_hard_footstep", gain = 1.0}
24 default.node_sound_defaults(table)
28 function default.node_sound_dirt_defaults(table)
30 table.footstep = table.footstep or
31 {name = "default_dirt_footstep", gain = 0.4}
32 table.dug = table.dug or
33 {name = "default_dirt_footstep", gain = 1.0}
34 table.place = table.place or
35 {name = "default_place_node", gain = 1.0}
36 default.node_sound_defaults(table)
40 function default.node_sound_sand_defaults(table)
42 table.footstep = table.footstep or
43 {name = "default_sand_footstep", gain = 0.12}
44 table.dug = table.dug or
45 {name = "default_sand_footstep", gain = 0.24}
46 table.place = table.place or
47 {name = "default_place_node", gain = 1.0}
48 default.node_sound_defaults(table)
52 function default.node_sound_gravel_defaults(table)
54 table.footstep = table.footstep or
55 {name = "default_gravel_footstep", gain = 0.4}
56 table.dug = table.dug or
57 {name = "default_gravel_footstep", gain = 1.0}
58 table.place = table.place or
59 {name = "default_place_node", gain = 1.0}
60 default.node_sound_defaults(table)
64 function default.node_sound_wood_defaults(table)
66 table.footstep = table.footstep or
67 {name = "default_wood_footstep", gain = 0.3}
68 table.dug = table.dug or
69 {name = "default_wood_footstep", gain = 1.0}
70 default.node_sound_defaults(table)
74 function default.node_sound_leaves_defaults(table)
76 table.footstep = table.footstep or
77 {name = "default_grass_footstep", gain = 0.45}
78 table.dug = table.dug or
79 {name = "default_grass_footstep", gain = 0.7}
80 table.place = table.place or
81 {name = "default_place_node", gain = 1.0}
82 default.node_sound_defaults(table)
86 function default.node_sound_glass_defaults(table)
88 table.footstep = table.footstep or
89 {name = "default_glass_footstep", gain = 0.3}
90 table.dig = table.dig or
91 {name = "default_glass_footstep", gain = 0.5}
92 table.dug = table.dug or
93 {name = "default_break_glass", gain = 1.0}
94 default.node_sound_defaults(table)
98 function default.node_sound_metal_defaults(table)
100 table.footstep = table.footstep or
101 {name = "default_metal_footstep", gain = 0.4}
102 table.dig = table.dig or
103 {name = "default_dig_metal", gain = 0.5}
104 table.dug = table.dug or
105 {name = "default_dug_metal", gain = 0.5}
106 table.place = table.place or
107 {name = "default_place_node_metal", gain = 0.5}
108 default.node_sound_defaults(table)
112 function default.node_sound_water_defaults(table)
114 table.footstep = table.footstep or
115 {name = "default_water_footstep", gain = 0.2}
116 default.node_sound_defaults(table)
124 default.cool_lava = function(pos, node)
125 if node.name == "default:lava_source" then
126 minetest.set_node(pos, {name = "default:obsidian"})
128 minetest.set_node(pos, {name = "default:stone"})
130 minetest.sound_play("default_cool_lava",
131 {pos = pos, max_hear_distance = 16, gain = 0.25})
134 minetest.register_abm({
135 label = "Lava cooling",
136 nodenames = {"default:lava_source", "default:lava_flowing"},
137 neighbors = {"group:cools_lava", "group:water"},
141 action = function(...)
142 default.cool_lava(...)
148 -- optimized helper to put all items in an inventory into a drops list
151 function default.get_inventory_drops(pos, inventory, drops)
152 local inv = minetest.get_meta(pos):get_inventory()
154 for i = 1, inv:get_size(inventory) do
155 local stack = inv:get_stack(inventory, i)
156 if stack:get_count() > 0 then
157 drops[n+1] = stack:to_table()
164 -- Papyrus and cactus growing
167 -- wrapping the functions in abm action is necessary to make overriding them possible
169 function default.grow_cactus(pos, node)
170 if node.param2 >= 4 then
174 if minetest.get_item_group(minetest.get_node(pos).name, "sand") == 0 then
179 while node.name == "default:cactus" and height < 4 do
182 node = minetest.get_node(pos)
184 if height == 4 or node.name ~= "air" then
187 if minetest.get_node_light(pos) < 13 then
190 minetest.set_node(pos, {name = "default:cactus"})
194 function default.grow_papyrus(pos, node)
196 local name = minetest.get_node(pos).name
197 if name ~= "default:dirt_with_grass" and name ~= "default:dirt" then
200 if not minetest.find_node_near(pos, 3, {"group:water"}) then
205 while node.name == "default:papyrus" and height < 4 do
208 node = minetest.get_node(pos)
210 if height == 4 or node.name ~= "air" then
213 if minetest.get_node_light(pos) < 13 then
216 minetest.set_node(pos, {name = "default:papyrus"})
220 minetest.register_abm({
221 label = "Grow cactus",
222 nodenames = {"default:cactus"},
223 neighbors = {"group:sand"},
226 action = function(...)
227 default.grow_cactus(...)
231 minetest.register_abm({
232 label = "Grow papyrus",
233 nodenames = {"default:papyrus"},
234 neighbors = {"default:dirt", "default:dirt_with_grass"},
237 action = function(...)
238 default.grow_papyrus(...)
247 function default.dig_up(pos, node, digger)
248 if digger == nil then return end
249 local np = {x = pos.x, y = pos.y + 1, z = pos.z}
250 local nn = minetest.get_node(np)
251 if nn.name == node.name then
252 minetest.node_dig(np, nn, digger)
258 -- Fence registration helper
261 function default.register_fence(name, def)
262 minetest.register_craft({
263 output = name .. " 4",
265 { def.material, 'group:stick', def.material },
266 { def.material, 'group:stick', def.material },
270 local fence_texture = "default_fence_overlay.png^" .. def.texture ..
271 "^default_fence_overlay.png^[makealpha:255,126,126"
272 -- Allow almost everything to be overridden
273 local default_fields = {
275 drawtype = "nodebox",
278 fixed = {{-1/8, -1/2, -1/8, 1/8, 1/2, 1/8}},
281 connect_front = {{-1/16,3/16,-1/2,1/16,5/16,-1/8},
282 {-1/16,-5/16,-1/2,1/16,-3/16,-1/8}},
283 connect_left = {{-1/2,3/16,-1/16,-1/8,5/16,1/16},
284 {-1/2,-5/16,-1/16,-1/8,-3/16,1/16}},
285 connect_back = {{-1/16,3/16,1/8,1/16,5/16,1/2},
286 {-1/16,-5/16,1/8,1/16,-3/16,1/2}},
287 connect_right = {{1/8,3/16,-1/16,1/2,5/16,1/16},
288 {1/8,-5/16,-1/16,1/2,-3/16,1/16}},
290 connects_to = {"group:fence", "group:wood", "group:tree"},
291 inventory_image = fence_texture,
292 wield_image = fence_texture,
293 tiles = {def.texture},
294 sunlight_propagates = true,
295 is_ground_content = false,
298 for k, v in pairs(default_fields) do
304 -- Always add to the fence group, even if no group provided
310 minetest.register_node(name, def)
318 -- Prevent decay of placed leaves
320 default.after_place_leaves = function(pos, placer, itemstack, pointed_thing)
321 if placer and not placer:get_player_control().sneak then
322 local node = minetest.get_node(pos)
324 minetest.set_node(pos, node)
329 local function leafdecay_after_destruct(pos, oldnode, def)
330 for _, v in pairs(minetest.find_nodes_in_area(vector.subtract(pos, def.radius),
331 vector.add(pos, def.radius), def.leaves)) do
332 local node = minetest.get_node(v)
333 local timer = minetest.get_node_timer(v)
334 if node.param2 == 0 and not timer:is_started() then
335 timer:start(math.random(20, 120) / 10)
340 local function leafdecay_on_timer(pos, def)
341 if minetest.find_node_near(pos, def.radius, def.trunks) then
345 local node = minetest.get_node(pos)
346 local drops = minetest.get_node_drops(node.name)
347 for _, item in ipairs(drops) do
349 for _, v in pairs(def.leaves) do
354 if minetest.get_item_group(item, "leafdecay_drop") ~= 0 or
357 x = pos.x - 0.5 + math.random(),
358 y = pos.y - 0.5 + math.random(),
359 z = pos.z - 0.5 + math.random(),
364 minetest.remove_node(pos)
365 minetest.check_for_falling(pos)
368 function default.register_leafdecay(def)
372 for _, v in pairs(def.trunks) do
373 minetest.override_item(v, {
374 after_destruct = function(pos, oldnode)
375 leafdecay_after_destruct(pos, oldnode, def)
379 for _, v in pairs(def.leaves) do
380 minetest.override_item(v, {
381 on_timer = function(pos)
382 leafdecay_on_timer(pos, def)
389 -- Convert dirt to something that fits the environment
392 minetest.register_abm({
393 label = "Grass spread",
394 nodenames = {"default:dirt"},
404 action = function(pos, node)
405 -- Check for darkness: night, shadow or under a light-blocking node
406 -- Returns if ignore above
407 local above = {x = pos.x, y = pos.y + 1, z = pos.z}
408 if (minetest.get_node_light(above) or 0) < 13 then
412 -- Look for spreading dirt-type neighbours
413 local p2 = minetest.find_node_near(pos, 1, "group:spreading_dirt_type")
415 local n3 = minetest.get_node(p2)
416 minetest.set_node(pos, {name = n3.name})
420 -- Else, any seeding nodes on top?
421 local name = minetest.get_node(above).name
422 -- Snow check is cheapest, so comes first
423 if name == "default:snow" then
424 minetest.set_node(pos, {name = "default:dirt_with_snow"})
425 -- Most likely case first
426 elseif minetest.get_item_group(name, "grass") ~= 0 then
427 minetest.set_node(pos, {name = "default:dirt_with_grass"})
428 elseif minetest.get_item_group(name, "dry_grass") ~= 0 then
429 minetest.set_node(pos, {name = "default:dirt_with_dry_grass"})
436 -- Grass and dry grass removed in darkness
439 minetest.register_abm({
440 label = "Grass covered",
441 nodenames = {"group:spreading_dirt_type"},
445 action = function(pos, node)
446 local above = {x = pos.x, y = pos.y + 1, z = pos.z}
447 local name = minetest.get_node(above).name
448 local nodedef = minetest.registered_nodes[name]
449 if name ~= "ignore" and nodedef and not ((nodedef.sunlight_propagates or
450 nodedef.paramtype == "light") and
451 nodedef.liquidtype == "none") then
452 minetest.set_node(pos, {name = "default:dirt"})
459 -- Moss growth on cobble near water
462 minetest.register_abm({
463 label = "Moss growth",
464 nodenames = {"default:cobble", "stairs:slab_cobble", "stairs:stair_cobble", "walls:cobble"},
465 neighbors = {"group:water"},
469 action = function(pos, node)
470 if node.name == "default:cobble" then
471 minetest.set_node(pos, {name = "default:mossycobble"})
472 elseif node.name == "stairs:slab_cobble" then
473 minetest.set_node(pos, {name = "stairs:slab_mossycobble", param2 = node.param2})
474 elseif node.name == "stairs:stair_cobble" then
475 minetest.set_node(pos, {name = "stairs:stair_mossycobble", param2 = node.param2})
476 elseif node.name == "walls:cobble" then
477 minetest.set_node(pos, {name = "walls:mossycobble", param2 = node.param2})
484 -- Checks if specified volume intersects a protected volume
487 function default.intersects_protection(minp, maxp, player_name, interval)
488 -- 'interval' is the largest allowed interval for the 3D lattice of checks
490 -- Compute the optimal float step 'd' for each axis so that all corners and
491 -- borders are checked. 'd' will be smaller or equal to 'interval'.
492 -- Subtracting 1e-4 ensures that the max co-ordinate will be reached by the
493 -- for loop (which might otherwise not be the case due to rounding errors).
495 for _, c in pairs({"x", "y", "z"}) do
496 if maxp[c] > minp[c] then
497 d[c] = (maxp[c] - minp[c]) / math.ceil((maxp[c] - minp[c]) / interval) - 1e-4
498 elseif maxp[c] == minp[c] then
499 d[c] = 1 -- Any value larger than 0 to avoid division by zero
500 else -- maxp[c] < minp[c], print error and treat as protection intersected
501 minetest.log("error", "maxp < minp in 'default.intersects_protection()'")
506 for zf = minp.z, maxp.z, d.z do
507 local z = math.floor(zf + 0.5)
508 for yf = minp.y, maxp.y, d.y do
509 local y = math.floor(yf + 0.5)
510 for xf = minp.x, maxp.x, d.x do
511 local x = math.floor(xf + 0.5)
512 if minetest.is_protected({x = x, y = y, z = z}, player_name) then
524 -- Coral death near air
527 minetest.register_abm({
528 nodenames = {"default:coral_brown", "default:coral_orange"},
533 action = function(pos, node)
534 minetest.set_node(pos, {name = "default:coral_skeleton"})
540 -- NOTICE: This method is not an official part of the API yet!
541 -- This method may change in future.
544 function default.can_interact_with_node(player, pos)
546 if minetest.check_player_privs(player, "protection_bypass") then
553 local meta = minetest.get_meta(pos)
554 local owner = meta:get_string("owner")
556 if not owner or owner == "" or owner == player:get_player_name() then
560 -- is player wielding the right key?
561 local item = player:get_wielded_item()
562 if item:get_name() == "default:key" then
563 local key_meta = item:get_meta()
565 if key_meta:get_string("secret") == "" then
566 local key_oldmeta = item:get_metadata()
567 if key_oldmeta == "" or not minetest.parse_json(key_oldmeta) then
571 key_meta:set_string("secret", minetest.parse_json(key_oldmeta).secret)
572 item:set_metadata("")
575 return meta:get_string("key_lock_secret") == key_meta:get_string("secret")