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-- A water mill produces LV EUs by exploiting flowing water across it
-- It is a LV EU supplyer and fairly low yield (max 120EUs)
-- It is a little under half as good as the thermal generator.
local S = technic.getter
local cable_entry = "^technic_cable_connection_overlay.png"
minetest.register_alias("water_mill", "technic:water_mill")
minetest.register_craft({
output = 'technic:water_mill',
recipe = {
{'technic:marble', 'default:diamond', 'technic:marble'},
{'group:wood', 'technic:machine_casing', 'group:wood'},
{'technic:marble', 'technic:lv_cable', 'technic:marble'},
}
})
local function check_node_around_mill(pos)
local node = minetest.get_node(pos)
if node.name == "default:water_flowing"
or node.name == "default:river_water_flowing" then
return node.param2 -- returns approx. water flow, if any
end
return false
end
local run = function(pos, node)
local meta = minetest.get_meta(pos)
local water_flow = 0
local lava_nodes = 0
local production_level = 0
local eu_supply = 0
local max_output = 35 * 45 -- four param2's at 15 makes 60, cap it lower for "overload protection"
-- (plus we want the gen to report 100% if three sides have full flow)
local positions = {
{x=pos.x+1, y=pos.y, z=pos.z},
{x=pos.x-1, y=pos.y, z=pos.z},
{x=pos.x, y=pos.y, z=pos.z+1},
{x=pos.x, y=pos.y, z=pos.z-1},
}
for _, p in pairs(positions) do
local check = check_node_around_mill(p)
if check then
water_flow = water_flow + check
end
end
eu_supply = math.min(35 * water_flow, max_output)
production_level = math.floor(100 * eu_supply / max_output)
meta:set_int("LV_EU_supply", eu_supply)
meta:set_string("infotext",
S("Hydro %s Generator"):format("LV").." ("..production_level.."%)")
if production_level > 0 and
minetest.get_node(pos).name == "technic:water_mill" then
technic.swap_node (pos, "technic:water_mill_active")
meta:set_int("LV_EU_supply", 0)
return
end
if production_level == 0 then
technic.swap_node(pos, "technic:water_mill")
end
end
minetest.register_node("technic:water_mill", {
description = S("Hydro %s Generator"):format("LV"),
tiles = {
"technic_water_mill_top.png",
"technic_machine_bottom.png"..cable_entry,
"technic_water_mill_side.png",
"technic_water_mill_side.png",
"technic_water_mill_side.png",
"technic_water_mill_side.png"
},
paramtype2 = "facedir",
groups = {snappy=2, choppy=2, oddly_breakable_by_hand=2,
technic_machine=1, technic_lv=1},
legacy_facedir_simple = true,
sounds = default.node_sound_wood_defaults(),
on_construct = function(pos)
local meta = minetest.get_meta(pos)
meta:set_string("infotext", S("Hydro %s Generator"):format("LV"))
meta:set_int("LV_EU_supply", 0)
end,
technic_run = run,
})
minetest.register_node("technic:water_mill_active", {
description = S("Hydro %s Generator"):format("LV"),
tiles = {"technic_water_mill_top_active.png", "technic_machine_bottom.png",
"technic_water_mill_side.png", "technic_water_mill_side.png",
"technic_water_mill_side.png", "technic_water_mill_side.png"},
paramtype2 = "facedir",
groups = {snappy=2, choppy=2, oddly_breakable_by_hand=2,
technic_machine=1, technic_lv=1, not_in_creative_inventory=1},
legacy_facedir_simple = true,
sounds = default.node_sound_wood_defaults(),
drop = "technic:water_mill",
technic_run = run,
technic_disabled_machine_name = "technic:water_mill",
})
technic.register_machine("LV", "technic:water_mill", technic.producer)
technic.register_machine("LV", "technic:water_mill_active", technic.producer)
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