mesecons/mesecons_pistons/init.lua
2017-03-04 09:39:40 +01:00

345 lines
10 KiB
Lua

local piston_get_rules = function (node)
local all_rules ={
{x=0, y=0, z=1},
{x=0, y=0, z=-1},
{x=1, y=0, z=0},
{x=-1, y=0, z=0},
{x=1, y=1, z=0},
{x=1, y=-1, z=0},
{x=-1, y=1, z=0},
{x=-1, y=-1, z=0},
{x=0, y=1, z=1},
{x=0, y=-1, z=1},
{x=0, y=1, z=-1},
{x=0, y=-1, z=-1}}
local pusher_dir = vector.multiply(minetest.facedir_to_dir(node.param2), -1)
for k,v in ipairs(all_rules) do
if vector.equals(v, pusher_dir) then
table.remove(all_rules, k)
end
end
return all_rules
end
local function piston_facedir_direction(node)
local rules = {{x = 0, y = 0, z = -1}}
for i = 1, node.param2 do
rules = mesecon.rotate_rules_left(rules)
end
return rules[1]
end
local piston_remove_pusher = function(pos, node)
local pistonspec = minetest.registered_nodes[node.name].mesecons_piston
local dir = vector.multiply(minetest.facedir_to_dir(node.param2), -1)
local pusherpos = vector.add(pos, dir)
local pushername = minetest.get_node(pusherpos).name
-- make sure there actually is a pusher (for compatibility reasons mainly)
if pushername ~= pistonspec.pusher then
return
end
minetest.remove_node(pusherpos)
minetest.sound_play("piston_retract", {
pos = pos,
max_hear_distance = 20,
gain = 0.3,
})
nodeupdate(pusherpos)
end
local piston_on = function(pos, node)
local pistonspec = minetest.registered_nodes[node.name].mesecons_piston
local dir = vector.multiply(minetest.facedir_to_dir(node.param2), -1)
local np = vector.add(pos, dir)
local maxpush = mesecon.setting("piston_max_push", 15)
local success, stack, oldstack = mesecon.mvps_push(np, dir, maxpush)
if success then
minetest.set_node(pos, {param2 = node.param2, name = pistonspec.onname})
minetest.set_node(np, {param2 = node.param2, name = pistonspec.pusher})
minetest.sound_play("piston_extend", {
pos = pos,
max_hear_distance = 20,
gain = 0.3,
})
mesecon.mvps_process_stack(stack)
mesecon.mvps_move_objects(np, dir, oldstack)
end
end
local piston_off = function(pos, node)
local pistonspec = minetest.registered_nodes[node.name].mesecons_piston
minetest.set_node(pos, {param2 = node.param2, name = pistonspec.offname})
piston_remove_pusher(pos, node)
if pistonspec.sticky then
local maxpull = mesecon.setting("piston_max_pull", 15)
local dir = vector.multiply(minetest.facedir_to_dir(node.param2), -1)
local pullpos = vector.add(pos, vector.multiply(dir, 2))
local stack = mesecon.mvps_pull_single(pullpos, vector.multiply(dir, -1), maxpull)
mesecon.mvps_process_stack(pos, dir, stack)
end
end
local piston_onrotate = function(pos, node, _, _, newparam2)
local node_copy = minetest.get_node(pos)
minetest.after(0, mesecon.on_dignode, pos, node)
node_copy.param2 = newparam2
minetest.after(0, mesecon.on_placenode, pos, node_copy)
end
local pt = 3/16 -- pusher thickness
local piston_pusher_box = {
type = "fixed",
fixed = {
{-2/16, -2/16, -.5 + pt, 2/16, 2/16, .5 + pt},
{-.5 , -.5 , -.5 , .5 , .5 , -.5 + pt},
}
}
local piston_on_box = {
type = "fixed",
fixed = {
{-.5, -.5, -.5 + pt, .5, .5, .5}
}
}
-- Normal (non-sticky) ones:
local pistonspec_normal = {
offname = "mesecons_pistons:piston_normal_off",
onname = "mesecons_pistons:piston_normal_on",
dir = piston_facedir_direction,
pusher = "mesecons_pistons:piston_pusher_normal",
}
-- offstate
minetest.register_node("mesecons_pistons:piston_normal_off", {
description = "Piston",
tiles = {
"mesecons_piston_top.png",
"mesecons_piston_bottom.png",
"mesecons_piston_left.png",
"mesecons_piston_right.png",
"mesecons_piston_back.png",
"mesecons_piston_pusher_front.png"
},
groups = {cracky = 3},
paramtype2 = "facedir",
mesecons_piston = pistonspec_normal,
on_rotate = piston_onrotate,
sounds = default.node_sound_wood_defaults(),
mesecons = {effector={
action_on = piston_on,
rules = piston_get_rules
}}
})
-- onstate
minetest.register_node("mesecons_pistons:piston_normal_on", {
drawtype = "nodebox",
tiles = {
"mesecons_piston_top.png",
"mesecons_piston_bottom.png",
"mesecons_piston_left.png",
"mesecons_piston_right.png",
"mesecons_piston_back.png",
"mesecons_piston_on_front.png"
},
inventory_image = "mesecons_piston_top.png",
wield_image = "mesecons_piston_top.png",
groups = {cracky = 3, not_in_creative_inventory = 1},
paramtype = "light",
paramtype2 = "facedir",
drop = "mesecons_pistons:piston_normal_off",
after_dig_node = piston_remove_pusher,
node_box = piston_on_box,
selection_box = piston_on_box,
mesecons_piston = pistonspec_normal,
on_rotate = false,
sounds = default.node_sound_wood_defaults(),
mesecons = {effector={
action_off = piston_off,
rules = piston_get_rules
}}
})
-- pusher
minetest.register_node("mesecons_pistons:piston_pusher_normal", {
drawtype = "nodebox",
tiles = {
"mesecons_piston_pusher_top.png",
"mesecons_piston_pusher_bottom.png",
"mesecons_piston_pusher_left.png",
"mesecons_piston_pusher_right.png",
"mesecons_piston_pusher_back.png",
"mesecons_piston_pusher_front.png"
},
paramtype = "light",
paramtype2 = "facedir",
diggable = false,
on_rotate = false,
corresponding_piston = "mesecons_pistons:piston_normal_on",
selection_box = piston_pusher_box,
node_box = piston_pusher_box,
})
-- Sticky ones
local pistonspec_sticky = {
offname = "mesecons_pistons:piston_sticky_off",
onname = "mesecons_pistons:piston_sticky_on",
dir = piston_facedir_direction,
pusher = "mesecons_pistons:piston_pusher_sticky",
sticky = true,
}
-- offstate
minetest.register_node("mesecons_pistons:piston_sticky_off", {
description = "Sticky Piston",
tiles = {
"mesecons_piston_top.png",
"mesecons_piston_bottom.png",
"mesecons_piston_left.png",
"mesecons_piston_right.png",
"mesecons_piston_back.png",
"mesecons_piston_pusher_front_sticky.png"
},
groups = {cracky = 3},
paramtype2 = "facedir",
on_rotate = piston_onrotate,
mesecons_piston = pistonspec_sticky,
sounds = default.node_sound_wood_defaults(),
mesecons = {effector={
action_on = piston_on,
rules = piston_get_rules
}}
})
-- onstate
minetest.register_node("mesecons_pistons:piston_sticky_on", {
drawtype = "nodebox",
tiles = {
"mesecons_piston_top.png",
"mesecons_piston_bottom.png",
"mesecons_piston_left.png",
"mesecons_piston_right.png",
"mesecons_piston_back.png",
"mesecons_piston_on_front.png"
},
inventory_image = "mesecons_piston_top.png",
wield_image = "mesecons_piston_top.png",
groups = {cracky = 3, not_in_creative_inventory = 1},
paramtype = "light",
paramtype2 = "facedir",
drop = "mesecons_pistons:piston_sticky_off",
after_dig_node = piston_remove_pusher,
node_box = piston_on_box,
selection_box = piston_on_box,
mesecons_piston = pistonspec_sticky,
on_rotate = false,
sounds = default.node_sound_wood_defaults(),
mesecons = {effector={
action_off = piston_off,
rules = piston_get_rules
}}
})
-- pusher
minetest.register_node("mesecons_pistons:piston_pusher_sticky", {
drawtype = "nodebox",
tiles = {
"mesecons_piston_pusher_top.png",
"mesecons_piston_pusher_bottom.png",
"mesecons_piston_pusher_left.png",
"mesecons_piston_pusher_right.png",
"mesecons_piston_pusher_back.png",
"mesecons_piston_pusher_front_sticky.png"
},
paramtype = "light",
paramtype2 = "facedir",
diggable = false,
on_rotate = false,
corresponding_piston = "mesecons_pistons:piston_sticky_on",
selection_box = piston_pusher_box,
node_box = piston_pusher_box,
})
-- Register pushers as stoppers if they would be seperated from the piston
local piston_pusher_get_stopper = function (node, dir, stack, stackid)
if (stack[stackid + 1]
and stack[stackid + 1].node.name == minetest.registered_nodes[node.name].corresponding_piston
and stack[stackid + 1].node.param2 == node.param2)
or (stack[stackid - 1]
and stack[stackid - 1].node.name == minetest.registered_nodes[node.name].corresponding_piston
and stack[stackid - 1].node.param2 == node.param2) then
return false
end
return true
end
local piston_pusher_up_down_get_stopper = function (node, dir, stack, stackid)
if (stack[stackid + 1]
and stack[stackid + 1].node.name == minetest.registered_nodes[node.name].corresponding_piston)
or (stack[stackid - 1]
and stack[stackid - 1].node.name == minetest.registered_nodes[node.name].corresponding_piston) then
return false
end
return true
end
mesecon.register_mvps_stopper("mesecons_pistons:piston_pusher_normal", piston_pusher_get_stopper)
mesecon.register_mvps_stopper("mesecons_pistons:piston_pusher_sticky", piston_pusher_get_stopper)
-- Register pistons as stoppers if they would be seperated from the stopper
local piston_up_down_get_stopper = function (node, dir, stack, stackid)
if (stack[stackid + 1]
and stack[stackid + 1].node.name == minetest.registered_nodes[node.name].mesecons_piston.pusher)
or (stack[stackid - 1]
and stack[stackid - 1].node.name == minetest.registered_nodes[node.name].mesecons_piston.pusher) then
return false
end
return true
end
local piston_get_stopper = function (node, dir, stack, stackid)
pistonspec = minetest.registered_nodes[node.name].mesecons_piston
dir = piston_get_direction(pistonspec.dir, node)
local pusherpos = vector.add(stack[stackid].pos, dir)
local pushernode = minetest.get_node(pusherpos)
if minetest.registered_nodes[node.name].mesecons_piston.pusher == pushernode.name then
for _, s in ipairs(stack) do
if vector.equals(s.pos, pusherpos) -- pusher is also to be pushed
and s.node.param2 == node.param2 then
return false
end
end
end
return true
end
mesecon.register_mvps_stopper("mesecons_pistons:piston_normal_on", piston_get_stopper)
mesecon.register_mvps_stopper("mesecons_pistons:piston_sticky_on", piston_get_stopper)
--craft recipes
minetest.register_craft({
output = "mesecons_pistons:piston_normal_off 2",
recipe = {
{"group:wood", "group:wood", "group:wood"},
{"default:cobble", "default:steel_ingot", "default:cobble"},
{"default:cobble", "group:mesecon_conductor_craftable", "default:cobble"},
}
})
minetest.register_craft({
output = "mesecons_pistons:piston_sticky_off",
recipe = {
{"mesecons_materials:glue"},
{"mesecons_pistons:piston_normal_off"},
}
})