mirror of
https://git.minetest.land/VoxeLibre/VoxeLibre.git
synced 2024-08-27 20:17:25 +02:00
360 lines
11 KiB
Lua
360 lines
11 KiB
Lua
local S = minetest.get_translator("mcl_comparators")
|
|
|
|
-- Functions that get the input/output rules of the comparator
|
|
|
|
local comparator_get_output_rules = function(node)
|
|
local rules = {{x = -1, y = 0, z = 0, spread=true}}
|
|
for i = 0, node.param2 do
|
|
rules = mesecon.rotate_rules_left(rules)
|
|
end
|
|
return rules
|
|
end
|
|
|
|
|
|
local comparator_get_input_rules = function(node)
|
|
local rules = {
|
|
-- we rely on this order in update_self below
|
|
{x = 1, y = 0, z = 0}, -- back
|
|
{x = 0, y = 0, z = -1}, -- side
|
|
{x = 0, y = 0, z = 1}, -- side
|
|
}
|
|
for i = 0, node.param2 do
|
|
rules = mesecon.rotate_rules_left(rules)
|
|
end
|
|
return rules
|
|
end
|
|
|
|
|
|
-- Functions that are called after the delay time
|
|
|
|
local comparator_turnon = function(params)
|
|
local rules = comparator_get_output_rules(params.node)
|
|
mesecon.receptor_on(params.pos, rules)
|
|
end
|
|
|
|
|
|
local comparator_turnoff = function(params)
|
|
local rules = comparator_get_output_rules(params.node)
|
|
mesecon.receptor_off(params.pos, rules)
|
|
end
|
|
|
|
|
|
-- Functions that set the correct node type an schedule a turnon/off
|
|
|
|
local comparator_activate = function(pos, node)
|
|
local def = minetest.registered_nodes[node.name]
|
|
minetest.swap_node(pos, { name = def.comparator_onstate, param2 = node.param2 })
|
|
minetest.after(0.1, comparator_turnon , {pos = pos, node = node})
|
|
end
|
|
|
|
|
|
local comparator_deactivate = function(pos, node)
|
|
local def = minetest.registered_nodes[node.name]
|
|
minetest.swap_node(pos, { name = def.comparator_offstate, param2 = node.param2 })
|
|
minetest.after(0.1, comparator_turnoff, {pos = pos, node = node})
|
|
end
|
|
|
|
|
|
-- weather pos has an inventory that contains at least one item
|
|
local container_inventory_nonempty = function(pos)
|
|
local invnode = minetest.get_node(pos)
|
|
local invnodedef = minetest.registered_nodes[invnode.name]
|
|
-- Ignore stale nodes
|
|
if not invnodedef then return false end
|
|
|
|
-- Only accept containers. When a container is dug, it's inventory
|
|
-- seems to stay. and we don't want to accept the inventory of an air
|
|
-- block
|
|
if not invnodedef.groups.container then return false end
|
|
|
|
local inv = minetest.get_inventory({type="node", pos=pos})
|
|
if not inv then return false end
|
|
|
|
for listname, _ in pairs(inv:get_lists()) do
|
|
if not inv:is_empty(listname) then return true end
|
|
end
|
|
|
|
return false
|
|
end
|
|
|
|
-- weather pos has an constant signal output for the comparator
|
|
local static_signal_output = function(pos)
|
|
local node = minetest.get_node(pos)
|
|
local g = minetest.get_item_group(node.name, "comparator_signal")
|
|
return g > 0
|
|
end
|
|
|
|
-- whether the comparator should be on according to its inputs
|
|
local comparator_desired_on = function(pos, node)
|
|
local my_input_rules = comparator_get_input_rules(node);
|
|
local back_rule = my_input_rules[1]
|
|
local state
|
|
if back_rule then
|
|
local back_pos = vector.add(pos, back_rule)
|
|
state = mesecon.is_power_on(back_pos) or container_inventory_nonempty(back_pos) or static_signal_output(back_pos)
|
|
end
|
|
|
|
-- if back input if off, we don't need to check side inputs
|
|
if not state then return false end
|
|
|
|
-- without power levels, side inputs have no influence on output in compare
|
|
-- mode
|
|
local mode = minetest.registered_nodes[node.name].comparator_mode
|
|
if mode == "comp" then return state end
|
|
|
|
-- subtract mode, subtract max(side_inputs) from back input
|
|
local side_state = false
|
|
for ri = 2,3 do
|
|
if my_input_rules[ri] then
|
|
side_state = mesecon.is_power_on(vector.add(pos, my_input_rules[ri]))
|
|
end
|
|
if side_state then break end
|
|
end
|
|
-- state is known to be true
|
|
return not side_state
|
|
end
|
|
|
|
|
|
-- update comparator state, if needed
|
|
local update_self = function(pos, node)
|
|
node = node or minetest.get_node(pos)
|
|
local old_state = mesecon.is_receptor_on(node.name)
|
|
local new_state = comparator_desired_on(pos, node)
|
|
if new_state ~= old_state then
|
|
if new_state then
|
|
comparator_activate(pos, node)
|
|
else
|
|
comparator_deactivate(pos, node)
|
|
end
|
|
end
|
|
end
|
|
|
|
|
|
-- compute tile depending on state and mode
|
|
local get_tiles = function(state, mode)
|
|
local top = "mcl_comparators_"..state..".png^"..
|
|
"mcl_comparators_"..mode..".png"
|
|
local sides = "mcl_comparators_sides_"..state..".png^"..
|
|
"mcl_comparators_sides_"..mode..".png"
|
|
local ends = "mcl_comparators_ends_"..state..".png^"..
|
|
"mcl_comparators_ends_"..mode..".png"
|
|
return {
|
|
top, "mcl_stairs_stone_slab_top.png",
|
|
sides, sides.."^[transformFX",
|
|
ends, ends,
|
|
}
|
|
end
|
|
|
|
-- Given one mode, get the other mode
|
|
local flipmode = function(mode)
|
|
if mode == "comp" then return "sub"
|
|
elseif mode == "sub" then return "comp"
|
|
end
|
|
end
|
|
|
|
local make_rightclick_handler = function(state, mode)
|
|
local newnodename =
|
|
"mcl_comparators:comparator_"..state.."_"..flipmode(mode)
|
|
return function (pos, node, clicker)
|
|
local protname = clicker:get_player_name()
|
|
if minetest.is_protected(pos, protname) then
|
|
minetest.record_protection_violation(pos, protname)
|
|
return
|
|
end
|
|
minetest.swap_node(pos, {name = newnodename, param2 = node.param2 })
|
|
end
|
|
end
|
|
|
|
|
|
-- Register the 2 (states) x 2 (modes) comparators
|
|
|
|
local icon = "mcl_comparators_item.png"
|
|
|
|
local node_boxes = {
|
|
comp = {
|
|
{ -8/16, -8/16, -8/16,
|
|
8/16, -6/16, 8/16 }, -- the main slab
|
|
{ -1/16, -6/16, 6/16,
|
|
1/16, -4/16, 4/16 }, -- front torch
|
|
{ -4/16, -6/16, -5/16,
|
|
-2/16, -1/16, -3/16 }, -- left back torch
|
|
{ 2/16, -6/16, -5/16,
|
|
4/16, -1/16, -3/16 }, -- right back torch
|
|
},
|
|
sub = {
|
|
{ -8/16, -8/16, -8/16,
|
|
8/16, -6/16, 8/16 }, -- the main slab
|
|
{ -1/16, -6/16, 6/16,
|
|
1/16, -3/16, 4/16 }, -- front torch (active)
|
|
{ -4/16, -6/16, -5/16,
|
|
-2/16, -1/16, -3/16 }, -- left back torch
|
|
{ 2/16, -6/16, -5/16,
|
|
4/16, -1/16, -3/16 }, -- right back torch
|
|
},
|
|
}
|
|
|
|
local collision_box = {
|
|
type = "fixed",
|
|
fixed = { -8/16, -8/16, -8/16, 8/16, -6/16, 8/16 },
|
|
}
|
|
|
|
local state_strs = {
|
|
[ mesecon.state.on ] = "on",
|
|
[ mesecon.state.off ] = "off",
|
|
}
|
|
|
|
local groups = {
|
|
dig_immediate = 3,
|
|
dig_by_water = 1,
|
|
destroy_by_lava_flow = 1,
|
|
dig_by_piston = 1,
|
|
attached_node = 1,
|
|
}
|
|
|
|
local on_rotate
|
|
if minetest.get_modpath("screwdriver") then
|
|
on_rotate = screwdriver.disallow
|
|
end
|
|
|
|
for _, mode in pairs{"comp", "sub"} do
|
|
for _, state in pairs{mesecon.state.on, mesecon.state.off} do
|
|
local state_str = state_strs[state]
|
|
local nodename =
|
|
"mcl_comparators:comparator_"..state_strs[state].."_"..mode
|
|
|
|
-- Help
|
|
local longdesc, usagehelp, use_help
|
|
if state_strs[state] == "off" and mode == "comp" then
|
|
longdesc = S("Redstone comparators are multi-purpose redstone components.").."\n"..
|
|
S("They can transmit a redstone signal, detect whether a block contains any items and compare multiple signals.")
|
|
|
|
usagehelp = S("A redstone comparator has 1 main input, 2 side inputs and 1 output. The output is in arrow direction, the main input is in the opposite direction. The other 2 sides are the side inputs.").."\n"..
|
|
S("The main input can powered in 2 ways: First, it can be powered directly by redstone power like any other component. Second, it is powered if, and only if a container (like a chest) is placed in front of it and the container contains at least one item.").."\n"..
|
|
S("The side inputs are only powered by normal redstone power. The redstone comparator can operate in two modes: Transmission mode and subtraction mode. It starts in transmission mode and the mode can be changed by using the block.").."\n\n"..
|
|
S("Transmission mode:\nThe front torch is unlit and lowered. The output is powered if, and only if the main input is powered. The two side inputs are ignored.").."\n"..
|
|
S("Subtraction mode:\nThe front torch is lit. The output is powered if, and only if the main input is powered and none of the side inputs is powered.")
|
|
else
|
|
use_help = false
|
|
end
|
|
|
|
local nodedef = {
|
|
description = S("Redstone Comparator"),
|
|
inventory_image = icon,
|
|
wield_image = icon,
|
|
_doc_items_create_entry = use_help,
|
|
_doc_items_longdesc = longdesc,
|
|
_doc_items_usagehelp = usagehelp,
|
|
drawtype = "nodebox",
|
|
tiles = get_tiles(state_strs[state], mode),
|
|
use_texture_alpha = minetest.features.use_texture_alpha_string_modes and "opaque" or false,
|
|
wield_image = "mcl_comparators_off.png",
|
|
walkable = true,
|
|
selection_box = collision_box,
|
|
collision_box = collision_box,
|
|
node_box = {
|
|
type = "fixed",
|
|
fixed = node_boxes[mode],
|
|
},
|
|
groups = groups,
|
|
paramtype = "light",
|
|
paramtype2 = "facedir",
|
|
sunlight_propagates = false,
|
|
is_ground_content = false,
|
|
drop = 'mcl_comparators:comparator_off_comp',
|
|
on_construct = update_self,
|
|
on_rightclick =
|
|
make_rightclick_handler(state_strs[state], mode),
|
|
comparator_mode = mode,
|
|
comparator_onstate = "mcl_comparators:comparator_on_"..mode,
|
|
comparator_offstate = "mcl_comparators:comparator_off_"..mode,
|
|
sounds = mcl_sounds.node_sound_stone_defaults(),
|
|
mesecons = {
|
|
receptor = {
|
|
state = state,
|
|
rules = comparator_get_output_rules,
|
|
},
|
|
effector = {
|
|
rules = comparator_get_input_rules,
|
|
action_change = update_self,
|
|
}
|
|
},
|
|
on_rotate = on_rotate,
|
|
}
|
|
|
|
if mode == "comp" and state == mesecon.state.off then
|
|
-- This is the prototype
|
|
nodedef._doc_items_create_entry = true
|
|
else
|
|
nodedef.groups = table.copy(nodedef.groups)
|
|
nodedef.groups.not_in_creative_inventory = 1
|
|
local extra_desc = {}
|
|
if mode == "sub" or state == mesecon.state.on then
|
|
nodedef.inventory_image = nil
|
|
end
|
|
local desc = nodedef.description
|
|
if mode ~= "sub" and state == mesecon.state.on then
|
|
desc = S("Redstone Comparator (Powered)")
|
|
elseif mode == "sub" and state ~= mesecon.state.on then
|
|
desc = S("Redstone Comparator (Subtract)")
|
|
elseif mode == "sub" and state == mesecon.state.on then
|
|
desc = S("Redstone Comparator (Subtract, Powered)")
|
|
end
|
|
nodedef.description = desc
|
|
end
|
|
|
|
minetest.register_node(nodename, nodedef)
|
|
mcl_wip.register_wip_item(nodename)
|
|
end
|
|
end
|
|
|
|
-- Register recipies
|
|
local rstorch = "mesecons_torch:mesecon_torch_on"
|
|
local quartz = "mcl_nether:quartz"
|
|
local stone = "mcl_core:stone"
|
|
|
|
minetest.register_craft({
|
|
output = "mcl_comparators:comparator_off_comp",
|
|
recipe = {
|
|
{ "", rstorch, "" },
|
|
{ rstorch, quartz, rstorch },
|
|
{ stone, stone, stone },
|
|
}
|
|
})
|
|
|
|
-- Register active block handlers
|
|
minetest.register_abm({
|
|
label = "Comparator signal input check (comparator is off)",
|
|
nodenames = {
|
|
"mcl_comparators:comparator_off_comp",
|
|
"mcl_comparators:comparator_off_sub",
|
|
},
|
|
neighbors = {"group:container", "group:comparator_signal"},
|
|
interval = 1,
|
|
chance = 1,
|
|
action = update_self,
|
|
})
|
|
|
|
minetest.register_abm({
|
|
label = "Comparator signal input check (comparator is on)",
|
|
nodenames = {
|
|
"mcl_comparators:comparator_on_comp",
|
|
"mcl_comparators:comparator_on_sub",
|
|
},
|
|
-- needs to run regardless of neighbors to make sure we detect when a
|
|
-- container is dug
|
|
interval = 1,
|
|
chance = 1,
|
|
action = update_self,
|
|
})
|
|
|
|
|
|
-- Add entry aliases for the Help
|
|
if minetest.get_modpath("doc") then
|
|
doc.add_entry_alias("nodes", "mcl_comparators:comparator_off_comp",
|
|
"nodes", "mcl_comparators:comparator_off_sub")
|
|
doc.add_entry_alias("nodes", "mcl_comparators:comparator_off_comp",
|
|
"nodes", "mcl_comparators:comparator_on_comp")
|
|
doc.add_entry_alias("nodes", "mcl_comparators:comparator_off_comp",
|
|
"nodes", "mcl_comparators:comparator_on_sub")
|
|
end
|