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-rw-r--r--data/builtin.lua102
1 files changed, 102 insertions, 0 deletions
diff --git a/data/builtin.lua b/data/builtin.lua
new file mode 100644
index 000000000..ead1ed3a6
--- /dev/null
+++ b/data/builtin.lua
@@ -0,0 +1,102 @@
+function basic_dump2(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) == "userdata" then
+ return "<userdata>"
+ elseif type(o) == "nil" then
+ return "nil"
+ else
+ error("cannot dump a " .. type(o))
+ return nil
+ end
+end
+
+function dump2(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"
+ or type(o) == "userdata" then
+ io.write(basic_dump2(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_dump2(k))
+ dump2(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>"
+ elseif type(o) == "userdata" then
+ return "<userdata>"
+ elseif type(o) == "nil" then
+ return "nil"
+ else
+ error("cannot dump a " .. type(o))
+ return nil
+ end
+end
+
+--
+-- Built-in node types. Also defined in C.
+--
+
+minetest.register_node("air", {
+ drawtype = "airlike",
+ paramtype = "light",
+ light_propagates = true,
+ sunlight_propagates = true,
+ walkable = false,
+ pointable = false,
+ diggable = false,
+ buildable_to = false,
+ air_equivalent = true,
+})
+
+minetest.register_node("ignore", {
+ drawtype = "airlike",
+ paramtype = "none",
+ light_propagates = false,
+ sunlight_propagates = false,
+ walkable = false,
+ pointable = false,
+ diggable = false,
+ buildable_to = true, -- A way to remove accidentally placed ignores
+ air_equivalent = true,
+})
+