-- Forcefield mod by ShadowNinja
|
-- Modified by kpoppel
|
--
|
-- Forcefields are powerful barriers but they consume huge amounts of power.
|
-- Forcefield Generator is a HV machine.
|
|
-- How expensive is the generator? Leaves room for upgrades lowering the power drain?
|
local forcefield_power_drain = 10
|
local forcefield_step_interval = 1
|
|
minetest.register_craft({
|
output = 'technic:forcefield_emitter_off',
|
recipe = {
|
{'default:mese', 'technic:deployer_off', 'default:mese' },
|
{'technic:deployer_off', 'technic:motor', 'technic:deployer_off'},
|
{'default:mese', 'technic:deployer_off', 'default:mese' },
|
}
|
})
|
|
|
-- Idea: Let forcefields have different colors by upgrade slot.
|
-- Idea: Let forcefields add up by detecting if one hits another.
|
-- ___ __
|
-- / \/ \
|
-- | |
|
-- \___/\___/
|
|
local function update_forcefield(pos, range, active)
|
local vm = VoxelManip()
|
local p1 = {x = pos.x-range, y = pos.y-range, z = pos.z-range}
|
local p2 = {x = pos.x+range, y = pos.y+range, z = pos.z+range}
|
local MinEdge, MaxEdge = vm:read_from_map(p1, p2)
|
local area = VoxelArea:new({MinEdge = MinEdge, MaxEdge = MaxEdge})
|
local data = vm:get_data()
|
|
local c_air = minetest.get_content_id("air")
|
local c_field = minetest.get_content_id("technic:forcefield")
|
|
for z=-range, range do
|
for y=-range, range do
|
local vi = area:index(pos.x+(-range), pos.y+y, pos.z+z)
|
for x=-range, range do
|
if x*x+y*y+z*z <= range * range + range and
|
x*x+y*y+z*z >= (range-1) * (range-1) + (range-1) and
|
((active and data[vi] == c_air) or ((not active) and data[vi] == c_field)) then
|
if active then
|
data[vi] = c_field
|
else
|
data[vi] = c_air
|
end
|
end
|
vi = vi + 1
|
end
|
end
|
end
|
|
vm:set_data(data)
|
vm:update_liquids()
|
vm:write_to_map()
|
vm:update_map()
|
end
|
|
local get_forcefield_formspec = function(range)
|
return "invsize[3,4;]"..
|
"label[0,0;Forcefield emitter]"..
|
"label[1,1;Range]"..
|
"label[1,2;"..range.."]"..
|
"button[0,2;1,1;subtract;-]"..
|
"button[2,2;1,1;add;+]"..
|
"button[0,3;3,1;toggle;Enable/Disable]"
|
end
|
|
local forcefield_receive_fields = function(pos, formname, fields, sender)
|
local meta = minetest.env:get_meta(pos)
|
local range = meta:get_int("range")
|
|
if fields.add then range = range + 1 end
|
if fields.subtract then range = range - 1 end
|
if fields.toggle then
|
if meta:get_int("enabled") == 1 then
|
meta:set_int("enabled", 0)
|
else
|
meta:set_int("enabled", 1)
|
end
|
end
|
|
-- Smallest field is 5. Anything less is asking for trouble.
|
-- Largest is 20. It is a matter of pratical node handling.
|
if range < 5 then range = 5 end
|
if range > 20 then range = 20 end
|
|
if range <= 20 and range >= 5 and meta:get_int("range") ~= range then
|
update_forcefield(pos, meta:get_int("range"), false)
|
meta:set_int("range", range)
|
meta:set_string("formspec", get_forcefield_formspec(range))
|
end
|
end
|
|
local function forcefield_step(pos)
|
local meta = minetest.env:get_meta(pos)
|
local node = minetest.env:get_node(pos)
|
local eu_input = meta:get_int("HV_EU_input")
|
local eu_demand = meta:get_int("HV_EU_demand")
|
local enabled = meta:get_int("enabled")
|
|
-- Power off automatically if no longer connected to a switching station
|
technic.switching_station_timeout_count(pos, "HV")
|
|
local power_requirement = 0
|
if enabled == 1 then
|
power_requirement = math.floor(
|
4 * math.pi * math.pow(meta:get_int("range"), 2)
|
) * forcefield_power_drain
|
else
|
power_requirement = eu_demand
|
end
|
|
if meta:get_int("enabled") == 0 then
|
if node.name == "technic:forcefield_emitter_on" then
|
update_forcefield(pos, meta:get_int("range"), false)
|
hacky_swap_node(pos, "technic:forcefield_emitter_off")
|
meta:set_int("HV_EU_demand", 100)
|
meta:set_string("infotext", "Forcefield Generator Disabled")
|
end
|
elseif eu_input < power_requirement then
|
meta:set_string("infotext", "Forcefield Generator Unpowered")
|
if node.name == "technic:forcefield_emitter_on" then
|
update_forcefield(pos, meta:get_int("range"), false)
|
hacky_swap_node(pos, "technic:forcefield_emitter_off")
|
end
|
elseif eu_input >= power_requirement then
|
if node.name == "technic:forcefield_emitter_off" then
|
hacky_swap_node(pos, "technic:forcefield_emitter_on")
|
meta:set_string("infotext", "Forcefield Generator Active")
|
end
|
update_forcefield(pos, meta:get_int("range"), true)
|
end
|
meta:set_int("HV_EU_demand", power_requirement)
|
return true
|
end
|
|
local mesecons = {
|
effector = {
|
action_on = function(pos, node)
|
minetest.env:get_meta(pos):set_int("enabled", 0)
|
end,
|
action_off = function(pos, node)
|
minetest.env:get_meta(pos):set_int("enabled", 1)
|
end
|
}
|
}
|
|
minetest.register_node("technic:forcefield_emitter_off", {
|
description = "Forcefield emitter",
|
inventory_image = minetest.inventorycube("technic_forcefield_emitter_off.png"),
|
tiles = {"technic_forcefield_emitter_off.png"},
|
is_ground_content = true,
|
groups = {cracky = 1},
|
on_timer = forcefield_step,
|
on_receive_fields = forcefield_receive_fields,
|
on_construct = function(pos)
|
minetest.env:get_node_timer(pos):start(forcefield_step_interval)
|
local meta = minetest.env:get_meta(pos)
|
meta:set_float("technic_hv_power_machine", 1)
|
meta:set_int("HV_EU_input", 0)
|
meta:set_int("HV_EU_demand", 0)
|
meta:set_int("range", 10)
|
meta:set_int("enabled", 0)
|
meta:set_string("formspec", get_forcefield_formspec(meta:get_int("range")))
|
meta:set_string("infotext", "Forcefield emitter");
|
end,
|
mesecons = mesecons
|
})
|
|
minetest.register_node("technic:forcefield_emitter_on", {
|
description = "Forcefield emitter on (you hacker you)",
|
tiles = {"technic_forcefield_emitter_on.png"},
|
is_ground_content = true,
|
groups = {cracky = 1, not_in_creative_inventory=1},
|
drop='"technic:forcefield_emitter_off" 1',
|
on_timer = forcefield_step,
|
on_receive_fields = forcefield_receive_fields,
|
on_construct = function(pos)
|
minetest.env:get_node_timer(pos):start(forcefield_step_interval)
|
local meta = minetest.env:get_meta(pos)
|
-- meta:set_float("technic_hv_power_machine", 1)
|
-- meta:set_float("HV_EU_input", 0)
|
-- meta:set_float("HV_EU_demand", 0)
|
-- meta:set_int("range", 10)
|
-- meta:set_int("enabled", 1)
|
meta:set_string("formspec", get_forcefield_formspec(meta:get_int("range")))
|
-- meta:set_string("infotext", "Forcefield emitter");
|
end,
|
on_dig = function(pos, node, digger)
|
update_forcefield(pos, minetest.env:get_meta(pos):get_int("range"), false)
|
return minetest.node_dig(pos, node, digger)
|
end,
|
mesecons = mesecons
|
})
|
|
minetest.register_node("technic:forcefield", {
|
description = "Forcefield (you hacker you)",
|
sunlight_propagates = true,
|
drop = '',
|
light_source = 8,
|
tiles = {{
|
name = "technic_forcefield_animated.png",
|
animation = {
|
type = "vertical_frames",
|
aspect_w=16,
|
aspect_h=16,
|
length=2.0,
|
},
|
}},
|
is_ground_content = true,
|
groups = { not_in_creative_inventory=1, unbreakable=1 },
|
paramtype = "light",
|
drawtype = "nodebox",
|
node_box = { --hacky way to get the field blue and not see through the ground
|
type = "fixed",
|
fixed={
|
{-.5,-.5,-.5,.5,.5,.5},
|
},
|
},
|
})
|
|
technic.register_HV_machine("technic:forcefield_emitter_on", "RE")
|
technic.register_HV_machine("technic:forcefield_emitter_off", "RE")
|
