Add the default.lua script

data/scripts/default.lua

+--[[function basicSerialize(o)
+	if type(o) == "number" then
+		return tostring(o)
+	else   -- assume it is a string
+		return string.format("%q", o)
+	end
+end
+
+function dump2(name, value, saved)
+	saved = saved or {}       -- initial value
+	io.write(name, " = ")
+	if type(value) == "number" or type(value) == "string" then
+		io.write(basicSerialize(value), "\n")
+	elseif type(value) == "table" then
+		if saved[value] then    -- value already saved?
+			io.write(saved[value], "\n")  -- use its previous name
+		else
+			saved[value] = name   -- save name for next time
+			io.write("{}\n")     -- create a new table
+			for k,v in pairs(value) do      -- save its fields
+				local fieldname = string.format("%s[%s]", name,
+												basicSerialize(k))
+				save(fieldname, v, saved)
+			end
+		end
+	else
+		error("cannot save a " .. type(value))
+	end
+end]]
+
+--[[function dump(o, name, dumped, s)
+	name = name or "_"
+	dumped = dumped or {}
+	s = s or ""
+	s = s .. name .. " = "
+	if type(o) == "number" then
+		s = s .. tostring(o)
+	elseif type(o) == "string" then
+		s = s .. string.format("%q", o)
+	elseif type(o) == "boolean" then
+		s = s .. tostring(o)
+	elseif type(o) == "function" then
+		s = s .. "<function>"
+	elseif type(o) == "nil" then
+		s = s .. "nil"
+	elseif type(o) == "table" then
+		if dumped[o] then
+			s = s .. dumped[o]
+		else
+			dumped[o] = name
+			local t = {}
+			for k,v in pairs(o) do
+				t[#t+1] = dump(v, k, dumped)
+			end
+			s = s .. "{" .. table.concat(t, ", ") .. "}"
+		end
+	else
+		error("cannot dump a " .. type(o))
+		return nil
+	end
+	return s
+end]]
+
+function basic_serialize(o)
+	if type(o) == "number" then
+		return tostring(o)
+	elseif type(o) == "string" then
+		return string.format("%q", o)
+	elseif type(o) == "boolean" then
+		return tostring(o)
+	elseif type(o) == "function" then
+		return "<function>"
+	elseif type(o) == "nil" then
+		return "nil"
+	else
+		error("cannot dump a " .. type(o))
+		return nil
+	end
+end
+
+function serialize(o, name, dumped)
+	name = name or "_"
+	dumped = dumped or {}
+	io.write(name, " = ")
+	if type(o) == "number" or type(o) == "string" or type(o) == "boolean"
+			or type(o) == "function" or type(o) == "nil" then
+		io.write(basic_serialize(o), "\n")
+	elseif type(o) == "table" then
+		if dumped[o] then
+			io.write(dumped[o], "\n")
+		else
+			dumped[o] = name
+			io.write("{}\n") -- new table
+			for k,v in pairs(o) do
+				local fieldname = string.format("%s[%s]", name, basic_serialize(k))
+				serialize(v, fieldname, dumped)
+			end
+		end
+	else
+		error("cannot dump a " .. type(o))
+		return nil
+	end
+end
+
+function dump(o, dumped)
+	dumped = dumped or {}
+	if type(o) == "number" then
+		return tostring(o)
+	elseif type(o) == "string" then
+		return string.format("%q", o)
+	elseif type(o) == "table" then
+		if dumped[o] then
+			return "<circular reference>"
+		end
+		dumped[o] = true
+		local t = {}
+		for k,v in pairs(o) do
+			t[#t+1] = "" .. k .. " = " .. dump(v, dumped)
+		end
+		return "{" .. table.concat(t, ", ") .. "}"
+	elseif type(o) == "boolean" then
+		return tostring(o)
+	elseif type(o) == "function" then
+		return "<function>"
+	else
+		error("cannot dump a " .. type(o))
+		return nil
+	end
+end
+
+print("omg lol")
+print("minetest dump: "..dump(minetest))
+
+minetest.register_object("a", "dummy string");
+
+local TNT = minetest.new_entity {
+	-- Maybe handle gravity and collision this way? dunno
+	physical = true,
+	weight = 5,
+	boundingbox = {-0.5,-0.5,-0.5, 0.5,0.5,0.5},
+	visual = "box",
+	textures = {"tnt_top.png","tnt_bottom.png","tnt_side.png","tnt_side.png","tnt_side.png","tnt_side.png"},
+	-- Initial value for our timer
+	timer = 0,
+	-- List names of state variables, for serializing object state
+	state_variables = {"timer"},
+}
+
+-- Called after object is created
+function TNT:on_create(env)
+end
+
+-- Called periodically
+function TNT:on_step(env, dtime)
+	self.timer = self.timer + dtime
+	if self.timer > 4.0 then
+		self.to_be_deleted = true -- Environment will delete this object at a suitable point of execution
+		env:explode(self.pos, 3) -- Uh... well, something like that
+	end
+end
+
+-- Called when object is punched
+function TNT:on_punch(env, hitter)
+	-- If tool is bomb defuser, revert back to being a block
+	local item = hitter.inventory.get_current()
+	if item.itemtype == "tool" and item.param == "bomb_defuser" then
+		env:add_node(self.pos, 3072)
+		self.to_be_deleted = true
+	end
+end
+
+-- Called when object is right-clicked
+function TNT:on_rightclick(self, env, hitter)
+end
+
+print("TNT dump: "..dump(TNT))
+
+print("Registering TNT");
+minetest.register_object("TNT", TNT)
+
+--print("minetest.registered_objects: "..dump(minetest.registered_objects))
+print("minetest.registered_objects:")
+serialize(minetest.registered_objects)
+