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if not minetest.get_modpath("mesecons_mvps") then
minetest.log("error","mesecons_mvps is not installed - digilines piston will not be available!")
return
end
local function extend(pos,node,max)
local meta = minetest.get_meta(pos):to_table()
local facedir = minetest.facedir_to_dir(node.param2)
local actiondir = vector.multiply(facedir,-1)
local ppos = vector.add(pos,actiondir)
local success,stack,oldstack = mesecon.mvps_push(ppos,actiondir,max)
if not success then return end
minetest.sound_play("digistuff_piston_extend",{pos = pos,max_hear_distance = 20,gain = 0.6})
minetest.swap_node(pos,{name = "digistuff:piston_ext",param2 = node.param2})
minetest.swap_node(ppos,{name = "digistuff:piston_pusher",param2 = node.param2})
mesecon.mvps_process_stack(stack)
mesecon.mvps_move_objects(ppos,actiondir,oldstack)
minetest.get_meta(pos):from_table(meta)
end
local function retract(pos,node,max,allsticky)
local facedir = minetest.facedir_to_dir(node.param2)
local actiondir = vector.multiply(facedir,-1)
local ppos = vector.add(pos,actiondir)
minetest.swap_node(pos,{name = "digistuff:piston",param2 = node.param2})
if minetest.get_node(ppos).name == "digistuff:piston_pusher" then
minetest.remove_node(ppos)
end
minetest.sound_play("digistuff_piston_retract",{pos = pos,max_hear_distance = 20,gain = 0.6})
minetest.check_for_falling(ppos)
if type(max) ~= "number" or max <= 0 then return end
local pullpos = vector.add(pos,vector.multiply(actiondir,2))
local success,stack,oldstack
if allsticky then
success,stack,oldstack = mesecon.mvps_pull_all(pullpos,facedir,max)
else
success,stack,oldstack = mesecon.mvps_pull_single(pullpos,facedir,max)
end
if success then
mesecon.mvps_move_objects(pullpos,actiondir,oldstack,-1)
end
end
minetest.register_node("digistuff:piston", {
description = "Digilines Piston",
groups = {cracky=3},
paramtype2 = "facedir",
on_construct = function(pos)
local meta = minetest.get_meta(pos)
meta:set_string("formspec","field[channel;Channel;${channel}")
end,
tiles = {
"digistuff_piston_sides.png^[transformR180",
"digistuff_piston_sides.png",
"digistuff_piston_sides.png^[transformR90",
"digistuff_piston_sides.png^[transformR270",
"digistuff_camera_pole.png",
"digistuff_camera_pole.png",
},
on_receive_fields = function(pos, formname, fields, sender)
local name = sender:get_player_name()
if minetest.is_protected(pos,name) and not minetest.check_player_privs(name,{protection_bypass=true}) then
minetest.record_protection_violation(pos,name)
return
end
local meta = minetest.get_meta(pos)
if fields.channel then meta:set_string("channel",fields.channel) end
end,
digiline = {
wire = {
rules = {
{x = 1, y = 0, z = 0},
{x =-1, y = 0, z = 0},
{x = 0, y = 1, z = 0},
{x = 0, y =-1, z = 0},
{x = 0, y = 0, z = 1},
{x = 0, y = 0, z =-1},
},
},
receptor = {},
effector = {
action = function(pos,node,channel,msg)
local meta = minetest.get_meta(pos)
local setchan = meta:get_string("channel")
if channel ~= setchan then return end
if msg == "extend" then
extend(pos,node,16)
elseif type(msg) == "table" and msg.action == "extend" then
local max = 16
if type(msg.max) == "number" then
max = math.max(0,math.min(16,math.floor(msg.max)))
end
extend(pos,node,max)
end
end
},
},
})
minetest.register_node("digistuff:piston_ext", {
description = "Digilines Piston (extended state - you hacker you!)",
groups = {cracky = 3,not_in_creative_inventory = 1},
paramtype2 = "facedir",
tiles = {
"digistuff_piston_sides.png^[transformR180",
"digistuff_piston_sides.png",
"digistuff_piston_sides.png^[transformR90",
"digistuff_piston_sides.png^[transformR270",
"digistuff_camera_pole.png",
"digistuff_camera_pole.png",
},
drop = "digistuff:piston",
drawtype = "nodebox",
node_box = {
type = "fixed",
fixed = {
{-0.5,-0.5,-0.3,0.5,0.5,0.5},
{-0.2,-0.2,-0.5,0.2,0.2,-0.3},
}
},
selection_box = {
type = "fixed",
fixed = {
{-0.5,-0.5,-1.5,0.5,0.5,0.5},
}
},
on_rotate = function() return false end,
on_receive_fields = function(pos, formname, fields, sender)
local name = sender:get_player_name()
if minetest.is_protected(pos,name) and not minetest.check_player_privs(name,{protection_bypass=true}) then
minetest.record_protection_violation(pos,name)
return
end
local meta = minetest.get_meta(pos)
if fields.channel then meta:set_string("channel",fields.channel) end
end,
after_dig_node = function(pos,node)
local pdir = vector.multiply(minetest.facedir_to_dir(node.param2),-1)
local ppos = vector.add(pos,pdir)
if minetest.get_node(ppos).name == "digistuff:piston_pusher" then
minetest.remove_node(ppos)
end
end,
digiline = {
wire = {
rules = {
{x = 1, y = 0, z = 0},
{x =-1, y = 0, z = 0},
{x = 0, y = 1, z = 0},
{x = 0, y =-1, z = 0},
{x = 0, y = 0, z = 1},
{x = 0, y = 0, z =-1},
},
},
receptor = {},
effector = {
action = function(pos,node,channel,msg)
local meta = minetest.get_meta(pos)
local setchan = meta:get_string("channel")
if channel ~= setchan then return end
if msg == "retract" then
retract(pos,node)
elseif msg == "retract_sticky" then
retract(pos,node,16)
elseif type(msg) == "table" and msg.action == "retract" then
local max = 16
if type(msg.max) == "number" then
max = math.max(0,math.min(16,math.floor(msg.max)))
elseif msg.max == nil then
max = 0
end
retract(pos,node,max,msg.allsticky)
end
end
},
},
})
minetest.register_node("digistuff:piston_pusher", {
description = "Digilines Piston Pusher (you hacker you!)",
groups = {not_in_creative_inventory=1},
paramtype = "light",
sunlight_propagates = true,
paramtype2 = "facedir",
tiles = {
"digistuff_piston_sides.png^[transformR180",
"digistuff_piston_sides.png",
"digistuff_piston_sides.png^[transformR90",
"digistuff_piston_sides.png^[transformR270",
"digistuff_camera_pole.png",
"digistuff_camera_pole.png",
},
drawtype = "nodebox",
node_box = {
type = "fixed",
fixed = {
{-0.5,-0.5,-0.5,0.5,0.5,-0.3},
{-0.2,-0.2,-0.3,0.2,0.2,0.5},
}
},
selection_box = {
type = "fixed",
fixed = {
{0,0,0,0,0,0},
}
},
digiline = {
wire = {
rules = {
{x = 1, y = 0, z = 0},
{x =-1, y = 0, z = 0},
{x = 0, y = 1, z = 0},
{x = 0, y =-1, z = 0},
{x = 0, y = 0, z = 1},
{x = 0, y = 0, z =-1},
},
},
},
})
mesecon.register_mvps_stopper("digistuff:piston_ext")
mesecon.register_mvps_stopper("digistuff:piston_pusher")
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