1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
|
--PISTONS
minetest.register_node("mesecons_pistons:piston_normal", {
description = "Piston",
tiles = {"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, mesecon=2},
paramtype2 = "facedir",
after_destruct = function(pos, oldnode)
local dir = mesecon:piston_get_direction(oldnode)
pos.x, pos.y, pos.z = pos.x + dir.x, pos.y + dir.y, pos.z + dir.z --move to first node to check
--ensure piston is extended
local checknode = minetest.env:get_node(pos)
if checknode.name == "mesecons_pistons:piston_pusher_normal" then
if checknode.param2 == oldnode.param2 then --pusher is facing the same direction as the piston
minetest.env:remove_node(pos) --remove the pusher
end
end
end,
on_timer = function(pos, elapsed)
if mesecon:is_powered(pos) then
mesecon:piston_push(pos)
else
mesecon:piston_pull(pos)
end
return false
end,
})
mesecon:register_effector("mesecons_pistons:piston_normal", "mesecons_pistons:piston_normal")
minetest.register_node("mesecons_pistons:piston_sticky", {
description = "Sticky Piston",
tiles = {"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, mesecon=2},
paramtype2 = "facedir",
after_destruct = function(pos, oldnode)
local dir = mesecon:piston_get_direction(oldnode)
pos.x, pos.y, pos.z = pos.x + dir.x, pos.y + dir.y, pos.z + dir.z --move to first node to check
--ensure piston is extended
local checknode = minetest.env:get_node(pos)
if checknode.name == "mesecons_pistons:piston_pusher_sticky" then
if checknode.param2 == oldnode.param2 then --pusher is facing the same direction as the piston
minetest.env:remove_node(pos) --remove the pusher
end
end
end,
on_timer = function(pos, elapsed)
if mesecon:is_powered(pos) then
mesecon:piston_push(pos)
else
mesecon:piston_pull(pos)
end
return false
end,
})
mesecon:register_effector("mesecons_pistons:piston_sticky", "mesecons_pistons:piston_sticky")
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", "group:mesecon_conductor_craftable", "default:cobble"},
}
})
minetest.register_craft({
output = "mesecons_pistons:piston_sticky",
recipe = {
{"mesecons_materials:glue"},
{"mesecons_pistons:piston_normal"},
}
})
minetest.register_node("mesecons_pistons:piston_pusher_normal", {
drawtype = "nodebox",
tiles = {"jeija_piston_pusher_normal.png"},
paramtype = "light",
paramtype2 = "facedir",
diggable = false,
selection_box = {
type = "fixed",
fixed = {
{-0.2, -0.2, -0.3, 0.2, 0.2, 0.5},
{-0.5, -0.5, -0.5, 0.5, 0.5, -0.3},
},
},
node_box = {
type = "fixed",
fixed = {
{-0.2, -0.2, -0.3, 0.2, 0.2, 0.5},
{-0.5, -0.5, -0.5, 0.5, 0.5, -0.3},
},
},
})
minetest.register_node("mesecons_pistons:piston_pusher_sticky", {
drawtype = "nodebox",
tiles = {
"jeija_piston_pusher_normal.png",
"jeija_piston_pusher_normal.png",
"jeija_piston_pusher_normal.png",
"jeija_piston_pusher_normal.png",
"jeija_piston_pusher_normal.png",
"jeija_piston_pusher_sticky.png"
},
paramtype = "light",
paramtype2 = "facedir",
diggable = false,
selection_box = {
type = "fixed",
fixed = {
{-0.2, -0.2, -0.3, 0.2, 0.2, 0.5},
{-0.5, -0.5, -0.5, 0.5, 0.5, -0.3},
},
},
node_box = {
type = "fixed",
fixed = {
{-0.2, -0.2, -0.3, 0.2, 0.2, 0.5},
{-0.5, -0.5, -0.5, 0.5, 0.5, -0.3},
},
},
})
mesecon:register_mvps_stopper("mesecons_pistons:piston_pusher_normal")
mesecon:register_mvps_stopper("mesecons_pistons:piston_pusher_sticky")
local update = function(pos, node)
if node.name ~= "mesecons_pistons:piston_normal" and node.name ~= "mesecons_pistons:piston_sticky" then
return
end
local timer = minetest.env:get_node_timer(pos)
timer:stop()
timer:start(0)
end
mesecon:register_on_signal_on(update) --push action
mesecon:register_on_signal_off(update) --pull action
function mesecon:piston_push(pos)
local node = minetest.env:get_node(pos)
local dir = mesecon:piston_get_direction(node)
pos = {x=pos.x + dir.x, y=pos.y + dir.y, z=pos.z + dir.z} --move to first node being pushed
--determine the number of nodes that need to be pushed
local count = 0
local checkpos = {x=pos.x, y=pos.y, z=pos.z} --first node being pushed
while true do
local checknode = minetest.env:get_node(checkpos)
--check for collision with stopper or bounds
if mesecon:is_mvps_stopper(checknode.name) or checknode.name == "ignore" then
return
end
--check for column end
if checknode.name == "air"
or not(minetest.registered_nodes[checknode.name].liquidtype == "none") then
break
end
--limit piston pushing capacity
count = count + 1
if count > 15 then
return
end
checkpos.x, checkpos.y, checkpos.z = checkpos.x + dir.x, checkpos.y + dir.y, checkpos.z + dir.z
end
local checknode = minetest.env:get_node(pos)
--add pusher
if node.name == "mesecons_pistons:piston_normal" then
minetest.env:add_node(pos, {name="mesecons_pistons:piston_pusher_normal", param2=node.param2})
else
minetest.env:add_node(pos, {name="mesecons_pistons:piston_pusher_sticky", param2=node.param2})
end
--move nodes forward
for i = 1, count do
pos.x, pos.y, pos.z = pos.x + dir.x, pos.y + dir.y, pos.z + dir.z --move to the next node
--check for conductor
if mesecon:is_conductor_on(checknode.name) then
checknode.name = mesecon:get_conductor_off(checknode.name)
end
--move the node forward
local nextnode = minetest.env:get_node(pos)
minetest.env:add_node(pos, checknode)
checknode = nextnode
end
--update nodes
for i = 1, count do
mesecon:updatenode(pos)
nodeupdate(pos)
pos.x, pos.y, pos.z = pos.x - dir.x, pos.y - dir.y, pos.z - dir.z --move to the previous node
end
end
function mesecon:piston_pull(pos)
local node = minetest.env:get_node(pos)
local dir = mesecon:piston_get_direction(node)
pos = {x=pos.x + dir.x, y=pos.y + dir.y, z=pos.z + dir.z} --move to first node being replaced
--ensure piston is extended
local checknode = minetest.env:get_node(pos)
if checknode.name ~= "mesecons_pistons:piston_pusher_normal" and checknode.name ~= "mesecons_pistons:piston_pusher_sticky" then
return
end
if checknode.param2 ~= node.param2 then --pusher is not facing the same direction as the piston
return --piston is not extended
end
--retract piston
minetest.env:remove_node(pos) --remove pusher
if node.name == "mesecons_pistons:piston_sticky" then --retract block
local checkpos = {x=pos.x + dir.x, y=pos.y + dir.y, z=pos.z + dir.z} --move to the node to be retracted
checknode = minetest.env:get_node(checkpos)
if checknode.name ~= "air"
and checknode.name ~= "ignore"
and minetest.registered_nodes[checknode.name].liquidtype == "none"
and not mesecon:is_mvps_stopper(checknode.name) then
minetest.env:add_node(pos, checknode)
minetest.env:remove_node(checkpos)
mesecon:updatenode(checkpos)
nodeupdate(checkpos)
end
end
mesecon:updatenode(pos)
nodeupdate(pos)
end
-- get piston direction
function mesecon:piston_get_direction(node)
if node.param2 == 3 then
return {x=1, y=0, z=0}
elseif node.param2 == 2 then
return {x=0, y=0, z=1}
elseif node.param2 == 1 then
return {x=-1, y=0, z=0}
else --node.param2 == 0
return {x=0, y=0, z=-1}
end
end
dofile(minetest.get_modpath("mesecons_pistons").."/pistons_down.lua")
dofile(minetest.get_modpath("mesecons_pistons").."/pistons_up.lua")
|
