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0a80	f4 b4 ef ee f7 42 08 37 b2 2c bb 51 2a 95 ee b8 fb a3 42 a1 c0 49 7f 9d d3 7f 6b ee 7f f9 9d 7e	.....B.7.,.Q local bcn = core.get_node_or_nil(bcp) -- Delete on contact with ignore at world edges if bcn and bcn.name == "ignore" then self.object:remove() return end local bcd = bcn and core.registered_nodes[bcn.name] if bcn and (not bcd or bcd.walkable or (core.get_item_group(self.node.name, "float") ~= 0 and bcd.liquidtype ~= "none")) then if bcd and bcd.leveled and bcn.name == self.node.name then local addlevel = self.node.level if not addlevel or addlevel <= 0 then addlevel = bcd.leveled end if core.add_node_level(bcp, addlevel) == 0 then self.object:remove() return end elseif bcd and bcd.buildable_to and (core.get_item_group(self.node.name, "float") == 0 or bcd.liquidtype == "none") then core.remove_node(bcp) return end local np = {x = bcp.x, y = bcp.y + 1, z = bcp.z} -- Check what's here local n2 = core.get_node(np) local nd = core.registered_nodes[n2.name] -- If it's not air or liquid, remove node and replace it with -- it's drops if n2.name ~= "air" and (not nd or nd.liquidtype == "none") then core.remove_node(np) if nd and nd.buildable_to == false then -- Add dropped items local drops = core.get_node_drops(n2, "") for _, dropped_item in pairs(drops) do core.add_item(np, dropped_item) end end -- Run script hook for _, callback in pairs(core.registered_on_dignodes) do callback(np, n2) end end -- Create node and remove entity local def = core.registered_nodes[self.node.name] if def then core.add_node(np, self.node) if self.meta then local meta = core.get_meta(np) meta:from_table(self.meta) end if def.sounds and def.sounds.place then core.sound_play(def.sounds.place, {pos = np}) end end self.object:remove() core.check_for_falling(np) return end local vel = self.object:get_velocity() if vector.equals(vel, {x = 0, y = 0, z = 0}) then local npos = self.object:get_pos() self.object:set_pos(vector.round(npos)) end end }) local function convert_to_falling_node(pos, node) local obj = core.add_entity(pos, "__builtin:falling_node") if not obj then return false end node.level = core.get_node_level(pos) local meta = core.get_meta(pos) local metatable = meta and meta:to_table() or {} local def = core.registered_nodes[node.name] if def and def.sounds and def.sounds.fall then core.sound_play(def.sounds.fall, {pos = pos}) end obj:get_luaentity():set_node(node, metatable) core.remove_node(pos) return true end function core.spawn_falling_node(pos) local node = core.get_node(pos) if node.name == "air" or node.name == "ignore" then return false end return convert_to_falling_node(pos, node) end local function drop_attached_node(p) local n = core.get_node(p) local drops = core.get_node_drops(n, "") local def = core.registered_items[n.name] if def and def.preserve_metadata then local oldmeta = core.get_meta(p):to_table().fields -- Copy pos and node because the callback can modify them. local pos_copy = {x=p.x, y=p.y, z=p.z} local node_copy = {name=n.name, param1=n.param1, param2=n.param2} local drop_stacks = {} for k, v in pairs(drops) do drop_stacks[k] = ItemStack(v) end drops = drop_stacks def.preserve_metadata(pos_copy, node_copy, oldmeta, drops) end if def and def.sounds and def.sounds.fall then core.sound_play(def.sounds.fall, {pos = p}) end core.remove_node(p) for _, item in pairs(drops) do local pos = { x = p.x + math.random()/2 - 0.25, y = p.y + math.random()/2 - 0.25, z = p.z + math.random()/2 - 0.25, } core.add_item(pos, item) end end function builtin_shared.check_attached_node(p, n) local def = core.registered_nodes[n.name] local d = {x = 0, y = 0, z = 0} if def.paramtype2 == "wallmounted" or def.paramtype2 == "colorwallmounted" then -- The fallback vector here is in case 'wallmounted to dir' is nil due -- to voxelmanip placing a wallmounted node without resetting a -- pre-existing param2 value that is out-of-range for wallmounted. -- The fallback vector corresponds to param2 = 0. d = core.wallmounted_to_dir(n.param2) or {x = 0, y = 1, z = 0} else d.y = -1 end local p2 = vector.add(p, d) local nn = core.get_node(p2).name local def2 = core.registered_nodes[nn] if def2 and not def2.walkable then return false end return true end -- -- Some common functions -- function core.check_single_for_falling(p) local n = core.get_node(p) if core.get_item_group(n.name, "falling_node") ~= 0 then local p_bottom = {x = p.x, y = p.y - 1, z = p.z} -- Only spawn falling node if node below is loaded local n_bottom = core.get_node_or_nil(p_bottom) local d_bottom = n_bottom and core.registered_nodes[n_bottom.name] if d_bottom and (core.get_item_group(n.name, "float") == 0 or d_bottom.liquidtype == "none") and (n.name ~= n_bottom.name or (d_bottom.leveled and core.get_node_level(p_bottom) < core.get_node_max_level(p_bottom))) and (not d_bottom.walkable or d_bottom.buildable_to) then convert_to_falling_node(p, n) return true end end if core.get_item_group(n.name, "attached_node") ~= 0 then if not builtin_shared.check_attached_node(p, n) then drop_attached_node(p) return true end end return false end -- This table is specifically ordered. -- We don't walk diagonals, only our direct neighbors, and self. -- Down first as likely case, but always before self. The same with sides. -- Up must come last, so that things above self will also fall all at once. local check_for_falling_neighbors = { {x = -1, y = -1, z = 0}, {x = 1, y = -1, z = 0}, {x = 0, y = -1, z = -1}, {x = 0, y = -1, z = 1}, {x = 0, y = -1, z = 0}, {x = -1, y = 0, z = 0}, {x = 1, y = 0, z = 0}, {x = 0, y = 0, z = 1}, {x = 0, y = 0, z = -1}, {x = 0, y = 0, z = 0}, {x = 0, y = 1, z = 0}, } function core.check_for_falling(p) -- Round p to prevent falling entities to get stuck. p = vector.round(p) -- We make a stack, and manually maintain size for performance. -- Stored in the stack, we will maintain tables with pos, and -- last neighbor visited. This way, when we get back to each -- node, we know which directions we have already walked, and -- which direction is the next to walk. local s = {} local n = 0 -- The neighbor order we will visit from our table. local v = 1 while true do -- Push current pos onto the stack. n = n + 1 s[n] = {p = p, v = v} -- Select next node from neighbor list. p = vector.add(p, check_for_falling_neighbors[v]) -- Now we check out the node. If it is in need of an update, -- it will let us know in the return value (true = updated). if not core.check_single_for_falling(p) then -- If we don't need to "recurse" (walk) to it then pop -- our previous pos off the stack and continue from there, -- with the v value we were at when we last were at that -- node repeat local pop = s[n] p = pop.p v = pop.v s[n] = nil n = n - 1 -- If there's nothing left on the stack, and no -- more sides to walk to, we're done and can exit if n == 0 and v == 11 then return end until v < 11 -- The next round walk the next neighbor in list. v = v + 1 else -- If we did need to walk the neighbor, then -- start walking it from the walk order start (1), -- and not the order we just pushed up the stack. v = 1 end end end -- -- Global callbacks -- local function on_placenode(p, node) core.check_for_falling(p) end core.register_on_placenode(on_placenode) local function on_dignode(p, node) core.check_for_falling(p) end core.register_on_dignode(on_dignode) local function on_punchnode(p, node) core.check_for_falling(p) end core.register_on_punchnode(on_punchnode)