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
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
|
-- Minetest: builtin/item.lua
local builtin_shared = ...
--
-- Falling stuff
--
core.register_entity(":__builtin:falling_node", {
initial_properties = {
visual = "wielditem",
visual_size = {x = 0.667, y = 0.667},
textures = {},
physical = true,
is_visible = false,
collide_with_objects = false,
collisionbox = {-0.5, -0.5, -0.5, 0.5, 0.5, 0.5},
},
node = {},
meta = {},
set_node = function(self, node, meta)
self.node = node
self.meta = meta or {}
self.object:set_properties({
is_visible = true,
textures = {node.name},
})
end,
get_staticdata = function(self)
local ds = {
node = self.node,
meta = self.meta,
}
return core.serialize(ds)
end,
on_activate = function(self, staticdata)
self.object:set_armor_groups({immortal = 1})
local ds = core.deserialize(staticdata)
if ds and ds.node then
self:set_node(ds.node, ds.meta)
elseif ds then
self:set_node(ds)
elseif staticdata ~= "" then
self:set_node({name = staticdata})
end
end,
on_step = function(self, dtime)
-- Set gravity
local acceleration = self.object:getacceleration()
if not vector.equals(acceleration, {x = 0, y = -10, z = 0}) then
self.object:setacceleration({x = 0, y = -10, z = 0})
end
-- Turn to actual node when colliding with ground, or continue to move
local pos = self.object:getpos()
-- Position of bottom center point
local bcp = {x = pos.x, y = pos.y - 0.7, z = pos.z}
-- Avoid bugs caused by an unloaded node below
local bcn = core.get_node_or_nil(bcp)
local bcd = bcn and core.registered_nodes[bcn.name]
if bcn and
(not bcd or bcd.walkable or
(core.get_item_group(self.node.name, "float") ~= 0 and
bcd.liquidtype ~= "none")) then
if bcd and bcd.leveled and
bcn.name == self.node.name then
local addlevel = self.node.level
if not addlevel or addlevel <= 0 then
addlevel = bcd.leveled
end
if core.add_node_level(bcp, addlevel) == 0 then
self.object:remove()
return
end
elseif bcd and bcd.buildable_to and
(core.get_item_group(self.node.name, "float") == 0 or
bcd.liquidtype == "none") then
core.remove_node(bcp)
return
end
local np = {x = bcp.x, y = bcp.y + 1, z = bcp.z}
-- Check what's here
local n2 = core.get_node(np)
local nd = core.registered_nodes[n2.name]
-- If it's not air or liquid, remove node and replace it with
-- it's drops
if n2.name ~= "air" and (not nd or nd.liquidtype == "none") then
core.remove_node(np)
if nd and nd.buildable_to == false then
-- Add dropped items
local drops = core.get_node_drops(n2, "")
for _, dropped_item in pairs(drops) do
core.add_item(np, dropped_item)
end
end
-- Run script hook
for _, callback in pairs(core.registered_on_dignodes) do
callback(np, n2)
end
end
-- Create node and remove entity
if core.registered_nodes[self.node.name] then
core.add_node(np, self.node)
if self.meta then
local meta = core.get_meta(np)
meta:from_table(self.meta)
end
end
self.object:remove()
core.check_for_falling(np)
return
end
local vel = self.object:getvelocity()
if vector.equals(vel, {x = 0, y = 0, z = 0}) then
local npos = self.object:getpos()
self.object:setpos(vector.round(npos))
end
end
})
local function spawn_falling_node(p, node, meta)
local obj = core.add_entity(p, "__builtin:falling_node")
if obj then
obj:get_luaentity():set_node(node, meta)
end
end
function core.spawn_falling_node(pos)
local node = core.get_node(pos)
if node.name == "air" or node.name == "ignore" then
return false
end
local obj = core.add_entity(pos, "__builtin:falling_node")
if obj then
obj:get_luaentity():set_node(node)
core.remove_node(pos)
return true
end
return false
end
local function drop_attached_node(p)
local n = core.get_node(p)
core.remove_node(p)
for _, item in pairs(core.get_node_drops(n, "")) do
local pos = {
x = p.x + math.random()/2 - 0.25,
y = p.y + math.random()/2 - 0.25,
z = p.z + math.random()/2 - 0.25,
}
core.add_item(pos, item)
end
end
function builtin_shared.check_attached_node(p, n)
local def = core.registered_nodes[n.name]
local d = {x = 0, y = 0, z = 0}
if def.paramtype2 == "wallmounted" or
def.paramtype2 == "colorwallmounted" then
-- The fallback vector here is in case 'wallmounted to dir' is nil due
-- to voxelmanip placing a wallmounted node without resetting a
-- pre-existing param2 value that is out-of-range for wallmounted.
-- The fallback vector corresponds to param2 = 0.
d = core.wallmounted_to_dir(n.param2) or {x = 0, y = 1, z = 0}
else
d.y = -1
end
|
