FOSS gamedev and creative worlds

--Enable Singlenode
minetest.set_mapgen_params({mgname = "singlenode"})


--Origin Mod thanks to Wuzzy and his code is licensed DWYWPL
origin = {}

do
local filepath = minetest.get_worldpath().."/origin.mt"
local file = io.open(filepath, "r")
if file then
io.close(file)
origin.exists = true
else
origin.exists = false
end
end

minetest.register_node("singlenode:origin",{
description = "The Origin",
is_ground_content = true,
groups = { not_in_creative_inventory = 1, immortal = 0 },
tiles = {"origin_origin.png"},
sounds = { footstep = "origin_origin_footstep" },
is_ground_content = false,
})

minetest.register_on_mapgen_init(function(mgparams)
origin.mgparams = mgparams
end)

minetest.register_on_generated(function(minp, maxp, seed)
local spawn = minetest.setting_get_pos("static_spawnpoint")
if origin.exists ~= true and origin.mgparams.mgname == "singlenode" then
local blockpos
if spawn ~= nil then
blockpos = { x=spawn.x, y=spawn.y-1, z=spawn.z }
else
blockpos = { x=0, y=-1, z=0 }
end
if(minp.x <= blockpos.x and maxp.x >= blockpos.x and minp.y <= blockpos.y and maxp.y >= blockpos.y and minp.z <= blockpos.z and maxp.z >= blockpos.z) then
minetest.set_node(blockpos, {name = "singlenode:origin"})
minetest.log("action", "[origin] The Origin has been set at "..minetest.pos_to_string(blockpos)..".")
origin.exists = true
local filepath = minetest.get_worldpath().."/origin.mt"
local file = io.open(filepath, "w")
if file then
file:write(minetest.pos_to_string(blockpos))
else
minetest.log("error", "[origin] Failed to write origin data into "..filepath..". The Origin may be placed again if you change static_spawnpoint.")
end
end
end
end)