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--PISTONS
--registration normal one:
minetest.register_node("mesecons_pistons:piston_normal", {
tile_images = {"jeija_piston_tb.png", "jeija_piston_tb.png", "jeija_piston_tb.png", "jeija_piston_tb.png", "jeija_piston_tb.png", "jeija_piston_side.png"},
groups = {cracky=3},
paramtype2="facedir",
description="Piston",
after_dig_node = function(pos)
local objs = minetest.env:get_objects_inside_radius(pos, 2)
for k, obj in pairs(objs) do
if obj:get_entity_name() == "mesecons_pistons:piston_pusher_normal" then
obj:remove()
end
end
end
})
minetest.register_craft({
output = '"mesecons_pistons:piston_normal" 2',
recipe = {
{"default:wood", "default:wood", "default:wood"},
{"default:cobble", "default:steel_ingot", "default:cobble"},
{"default:cobble", "mesecons:mesecon_off", "default:cobble"},
}
})
--registration sticky one:
minetest.register_node("mesecons_pistons:piston_sticky", {
tile_images = {"jeija_piston_tb.png", "jeija_piston_tb.png", "jeija_piston_tb.png", "jeija_piston_tb.png", "jeija_piston_tb.png", "jeija_piston_sticky_side.png"},
groups = {cracky=3},
paramtype2="facedir",
description="Sticky Piston",
after_dig_node = function(pos)
local objs = minetest.env:get_objects_inside_radius(pos, 2)
for k, obj in pairs(objs) do
if obj:get_entity_name() == "mesecons_pistons:piston_pusher_sticky" then
obj:remove()
end
end
end
})
minetest.register_craft({
output = "mesecons_pistons:piston_sticky",
recipe = {
{"mesecons_materials:glue"},
{"mesecons_pistons:piston_normal"},
}
})
-- get push direction
function mesecon:piston_get_direction(pos)
local param2 = minetest.env:get_node(pos).param2
if param2 == 3 then
return {x=1, y=0, z=0}
elseif param2 == 2 then
return {x=0, y=0, z=1}
elseif param2 == 1 then
return {x=-1, y=0, z=0}
else --param2 == 0
return {x=0, y=0, z=-1}
end
end
-- Push action
mesecon:register_on_signal_on(function (pos, node)
if node.name ~= "mesecons_pistons:piston_normal" and node.name ~= "mesecons_pistons:piston_sticky" then
return
end
local dir = mesecon:piston_get_direction(pos)
--determine the number of nodes that need to be pushed
local count = 0
local checkpos = {x=pos.x + dir.x, y=pos.y + dir.y, z=pos.z + dir.z} --first node being pushed
local checknode = minetest.env:get_node(checkpos)
while checknode.name ~= "air"
and checknode.name ~= "ignore"
and checknode.name ~= "default:water_source"
and checknode.name ~= "default:water_flowing"
and checknode.name ~= "default:lava_source"
and checknode.name ~= "default:lava_flowing" do
--limit piston pushing capacity
count = count + 1
if count > 15 then
return
end
--check for collision with stopper
checkpos.x, checkpos.y, checkpos.z = checkpos.x + dir.x, checkpos.y + dir.y, checkpos.z + dir.z
checknode = minetest.env:get_node(checkpos)
if mesecon:is_mvps_stopper(checknode.name) then
return
end
end
--add pusher entity
local object
if node.name == "mesecons_pistons:piston_normal" then --normal piston
object = minetest.env:add_entity(pos, "mesecons_pistons:piston_pusher_normal")
else --sticky piston
object = minetest.env:add_entity(pos, "mesecons_pistons:piston_pusher_sticky")
end
--move pusher forward
if ENABLE_PISTON_ANIMATION then
object:setvelocity({x=dir.x * 4, y=dir.y * 4, z=dir.z * 4})
else
object:moveto(pos, false)
end
--move nodes forward
pos.x, pos.y, pos.z = pos.x + dir.x, pos.y + dir.y, pos.z + dir.z --move to first node being pushed
checknode = minetest.env:get_node(pos)
minetest.env:dig_node(pos) --remove the first node
for i = 1, count do
--move to the next node
pos.x, pos.y, pos.z = pos.x + dir.x, pos.y + dir.y, pos.z + dir.z
--move the node forward
local nextnode = minetest.env:get_node(pos)
minetest.env:place_node(pos, checknode)
checknode = nextnode
end
end)
--Pull action (sticky only)
mesecon:register_on_signal_off(function(pos, node)
if node.name ~= "mesecons_pistons:piston_sticky" and node.name ~= "mesecons_pistons:piston_normal" then
return
end
--remove piston pusher
local found = false --whether or not the piston was extended
local objects = minetest.env:get_objects_inside_radius(pos, 2)
for k, object in pairs(objects) do
local name = object:get_luaentity().name
if name == "mesecons_pistons:piston_pusher_normal" or name == "mesecons_pistons:piston_pusher_sticky" then
found = true
object:remove()
end
end
--retract piston
if found and node.name == "mesecons_pistons:piston_sticky" then
local dir = mesecon:piston_get_direction(pos)
pos.x, pos.y, pos.z = pos.x + dir.x, pos.y + dir.y, pos.z + dir.z --move to the node to be replaced
local checknode = minetest.env:get_node(pos)
if checknode.name == "air"
or checknode.name == "default:water_source"
or checknode.name == "default:water_flowing"
or checknode.name == "default:lava_source"
or checknode.name == "default:lava_flowing" then
local checkpos = {x=pos.x + dir.x, y=pos.y + dir.y, z=pos.z + dir.z} --move to the node to be retracted
local checknode = minetest.env:get_node(checkpos)
if checknode.name ~= "air"
and checknode.name ~= "ignore"
and checknode.name ~= "default:water_source"
and checknode.name ~= "default:water_flowing"
and checknode.name ~= "default:lava_source"
and checknode.name ~= "default:lava_flowing" then
minetest.env:place_node(pos, checknode)
minetest.env:dig_node(checkpos)
end
end
end
end)
--Piston Animation
local PISTON_PUSHER_NORMAL = {
physical = false,
visual = "sprite",
textures = {"default_wood.png", "default_wood.png", "jeija_piston_pusher_normal.png", "jeija_piston_pusher_normal.png", "jeija_piston_pusher_normal.png", "jeija_piston_pusher_normal.png"},
collisionbox = {-0.5,-0.5,-0.5, 0.5,0.5,0.5},
visual = "cube",
timer=0,
}
function PISTON_PUSHER_NORMAL:on_step(dtime)
self.timer = self.timer+dtime
if self.timer >= 0.24 then
self.object:setvelocity({x=0, y=0, z=0})
end
end
local PISTON_PUSHER_STICKY = {
physical = false,
visual = "sprite",
textures = {"default_wood.png", "default_wood.png", "jeija_piston_pusher_sticky.png", "jeija_piston_pusher_sticky.png", "jeija_piston_pusher_sticky.png", "jeija_piston_pusher_sticky.png"},
collisionbox = {-0.5,-0.5,-0.5, 0.5,0.5,0.5},
visual = "cube",
timer = 0,
}
function PISTON_PUSHER_STICKY:on_step(dtime)
self.timer=self.timer+dtime
if self.timer >= 0.24 then
self.object:setvelocity({x=0, y=0, z=0})
end
end
minetest.register_entity("mesecons_pistons:piston_pusher_normal", PISTON_PUSHER_NORMAL)
minetest.register_entity("mesecons_pistons:piston_pusher_sticky", PISTON_PUSHER_STICKY)
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