write something there

mods/minetest_game/beds/api.lua

@@ -0,0 +1,204 @@
+-- Removes a node without calling on on_destruct()
+-- We use this to mess with bed nodes without causing unwanted recursion.
+local function remove_no_destruct(pos)
+	minetest.swap_node(pos, {name = "air"})
+	minetest.remove_node(pos) -- Now clear the meta
+	minetest.check_for_falling(pos)
+end
+
+--- returns the position of the other bed half (or nil on failure)
+local function get_other_bed_pos(pos, n)
+	local node = core.get_node(pos)
+	local dir = core.facedir_to_dir(node.param2)
+	if not dir then
+		return -- There are 255 possible param2 values. Ignore bad ones.
+	end
+	local other
+	if n == 2 then
+		other = vector.subtract(pos, dir)
+	elseif n == 1 then
+		other = vector.add(pos, dir)
+	else
+		return nil
+	end
+
+	local onode = core.get_node(other)
+	if onode.param2 == node.param2 and core.get_item_group(onode.name, "bed") ~= 0 then
+		return other
+	end
+	return nil
+end
+
+local function destruct_bed(pos, n)
+	local other = get_other_bed_pos(pos, n)
+	if other then
+		remove_no_destruct(other)
+		beds.remove_spawns_at(other)
+	end
+	beds.remove_spawns_at(pos)
+end
+
+function beds.register_bed(name, def)
+	minetest.register_node(name .. "_bottom", {
+		description = def.description,
+		inventory_image = def.inventory_image,
+		wield_image = def.wield_image,
+		drawtype = "nodebox",
+		tiles = def.tiles.bottom,
+		use_texture_alpha = "clip",
+		paramtype = "light",
+		paramtype2 = "facedir",
+		is_ground_content = false,
+		stack_max = 1,
+		groups = {choppy = 2, oddly_breakable_by_hand = 2, flammable = 3, bed = 1},
+		sounds = def.sounds or default.node_sound_wood_defaults(),
+		node_box = {
+			type = "fixed",
+			fixed = def.nodebox.bottom,
+		},
+		selection_box = {
+			type = "fixed",
+			fixed = def.selectionbox,
+		},
+
+		on_place = function(itemstack, placer, pointed_thing)
+			local under = pointed_thing.under
+			local node = minetest.get_node(under)
+			local udef = minetest.registered_nodes[node.name]
+			if udef and udef.on_rightclick and
+					not (placer and placer:is_player() and
+					placer:get_player_control().sneak) then
+				return udef.on_rightclick(under, node, placer, itemstack,
+					pointed_thing) or itemstack
+			end
+
+			local pos
+			if udef and udef.buildable_to then
+				pos = under
+			else
+				pos = pointed_thing.above
+			end
+
+			local player_name = placer and placer:get_player_name() or ""
+
+			if minetest.is_protected(pos, player_name) and
+					not minetest.check_player_privs(player_name, "protection_bypass") then
+				minetest.record_protection_violation(pos, player_name)
+				return itemstack
+			end
+
+			local node_def = minetest.registered_nodes[minetest.get_node(pos).name]
+			if not node_def or not node_def.buildable_to then
+				return itemstack
+			end
+
+			local dir = placer and placer:get_look_dir() and
+				minetest.dir_to_facedir(placer:get_look_dir()) or 0
+			local botpos = vector.add(pos, minetest.facedir_to_dir(dir))
+
+			if minetest.is_protected(botpos, player_name) and
+					not minetest.check_player_privs(player_name, "protection_bypass") then
+				minetest.record_protection_violation(botpos, player_name)
+				return itemstack
+			end
+
+			local botdef = minetest.registered_nodes[minetest.get_node(botpos).name]
+			if not botdef or not botdef.buildable_to then
+				return itemstack
+			end
+
+			minetest.set_node(pos, {name = name .. "_bottom", param2 = dir})
+			minetest.set_node(botpos, {name = name .. "_top", param2 = dir})
+
+			if not minetest.is_creative_enabled(player_name) then
+				itemstack:take_item()
+			end
+			return itemstack
+		end,
+
+		on_destruct = function(pos)
+			destruct_bed(pos, 1)
+		end,
+
+		on_rightclick = function(pos, node, clicker, itemstack, pointed_thing)
+			beds.on_rightclick(pos, clicker)
+			return itemstack
+		end,
+
+		on_rotate = function(pos, node, user, _, new_param2)
+			local dir = minetest.facedir_to_dir(node.param2)
+			if not dir then
+				return false
+			end
+			-- old position of the top node
+			local p = vector.add(pos, dir)
+			local node2 = minetest.get_node_or_nil(p)
+			if not node2 or minetest.get_item_group(node2.name, "bed") ~= 2 or
+					node.param2 ~= node2.param2 then
+				return false
+			end
+			if minetest.is_protected(p, user:get_player_name()) then
+				minetest.record_protection_violation(p, user:get_player_name())
+				return false
+			end
+			if new_param2 % 32 > 3 then
+				return false
+			end
+			-- new position of the top node
+			local newp = vector.add(pos, minetest.facedir_to_dir(new_param2))
+			local node3 = minetest.get_node_or_nil(newp)
+			local node_def = node3 and minetest.registered_nodes[node3.name]
+			if not node_def or not node_def.buildable_to then
+				return false
+			end
+			if minetest.is_protected(newp, user:get_player_name()) then
+				minetest.record_protection_violation(newp, user:get_player_name())
+				return false
+			end
+			node.param2 = new_param2
+			remove_no_destruct(p)
+			minetest.set_node(pos, node)
+			minetest.set_node(newp, {name = name .. "_top", param2 = new_param2})
+			return true
+		end,
+		can_dig = function(pos, player)
+			return beds.can_dig(pos)
+		end,
+	})
+
+	minetest.register_node(name .. "_top", {
+		drawtype = "nodebox",
+		tiles = def.tiles.top,
+		use_texture_alpha = "clip",
+		paramtype = "light",
+		paramtype2 = "facedir",
+		is_ground_content = false,
+		groups = {choppy = 2, oddly_breakable_by_hand = 2, flammable = 3, bed = 2,
+				not_in_creative_inventory = 1},
+		sounds = def.sounds or default.node_sound_wood_defaults(),
+		drop = "",
+		node_box = {
+			type = "fixed",
+			fixed = def.nodebox.top,
+		},
+		selection_box = {
+			type = "fixed",
+			-- Small selection box to allow digging stray top nodes
+			fixed = {-0.3, -0.3, -0.3, 0.3, -0.1, 0.3},
+		},
+		on_destruct = function(pos)
+			destruct_bed(pos, 2)
+		end,
+		can_dig = function(pos, player)
+			local other = get_other_bed_pos(pos, 2)
+			return (not other) or beds.can_dig(other)
+		end,
+	})
+
+	minetest.register_alias(name, name .. "_bottom")
+
+	minetest.register_craft({
+		output = name,
+		recipe = def.recipe
+	})
+end