Fix build error on Ubuntu 16.04
0 files changed, 0 insertions, 0 deletions
='#n109'>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
--nodedb.lua
--database of all nodes that have 'save_in_at_nodedb' field set to true in node definition
--serialization format:
--(2byte z) (2byte y) (2byte x) (2byte contentid)
--contentid := (14bit nodeid, 2bit param2)
local function int_to_bytes(i)
local x=i+32768--clip to positive integers
local cH = math.floor(x / 256) % 256;
local cL = math.floor(x ) % 256;
return(string.char(cH, cL));
end
local function bytes_to_int(bytes)
local t={string.byte(bytes,1,-1)}
local n =
t[1] * 256 +
t[2]
return n-32768
end
local function l2b(x)
return x%4
end
local function u14b(x)
return math.floor(x/4)
end
local ndb={}
--local variables for performance
local ndb_nodeids={}
local ndb_nodes={}
local function ndbget(x,y,z)
local ny=ndb_nodes[y]
if ny then
local nx=ny[x]
if nx then
return nx[z]
end
end
return nil
end
local function ndbset(x,y,z,v)
if not ndb_nodes[y] then
ndb_nodes[y]={}
end
if not ndb_nodes[y][x] then
ndb_nodes[y][x]={}
end
ndb_nodes[y][x][z]=v
end
local path=minetest.get_worldpath()..DIR_DELIM.."advtrains_ndb2"
--load
--nodeids get loaded by advtrains init.lua and passed here
function ndb.load_data(data)
ndb_nodeids = data and data.nodeids or {}
local file, err = io.open(path, "rb")
if not file then
atwarn("Couldn't load the node database: ", err or "Unknown Error")
else
local cnt=0
local hst_z=file:read(2)
local hst_y=file:read(2)
local hst_x=file:read(2)
local cid=file:read(2)
while hst_z and hst_y and hst_x and cid and #hst_z==2 and #hst_y==2 and #hst_x==2 and #cid==2 do
ndbset(bytes_to_int(hst_x), bytes_to_int(hst_y), bytes_to_int(hst_z), bytes_to_int(cid))
cnt=cnt+1
hst_z=file:read(2)
hst_y=file:read(2)
hst_x=file:read(2)
cid=file:read(2)
end
atlog("nodedb: read", cnt, "nodes.")
file:close()
end
end
--save
function ndb.save_data()
local file, err = io.open(path, "wb")
if not file then
atwarn("Couldn't save the node database: ", err or "Unknown Error")
else
for y, ny in pairs(ndb_nodes) do
for x, nx in pairs(ny) do
for z, cid in pairs(nx) do
file:write(int_to_bytes(z))
file:write(int_to_bytes(y))
file:write(int_to_bytes(x))
file:write(int_to_bytes(cid))
end
end
end
file:close()
end
return {nodeids = ndb_nodeids}
end
--function to get node. track database is not helpful here.
function ndb.get_node_or_nil(pos)
-- FIX for bug found on linuxworks server:
-- a loaded node might get read before the LBM has updated its state, resulting in wrongly set signals and switches
-- -> Using the saved node prioritarily.
local node = ndb.get_node_raw(pos)
if node then
return node
else
--try reading the node from the map
return minetest.get_node_or_nil(pos)
end
end
function ndb.get_node(pos)
local n=ndb.get_node_or_nil(pos)
if not n then
return {name="ignore", param2=0}
end
return n
end
function ndb.get_node_raw(pos)
local cid=ndbget(pos.x, pos.y, pos.z)
if cid then
local nodeid = ndb_nodeids[u14b(cid)]
if nodeid then
return {name=nodeid, param2 = l2b(cid)}
end
end
return nil
end
function ndb.swap_node(pos, node, no_inval)
if minetest.get_node_or_nil(pos) then
minetest.swap_node(pos, node)
end
ndb.update(pos, node)
end
function ndb.update(pos, pnode)
local node = pnode or minetest.get_node_or_nil(pos)
if not node or node.name=="ignore" then return end
if minetest.registered_nodes[node.name] and minetest.registered_nodes[node.name].groups.save_in_at_nodedb then
local nid
for tnid, nname in pairs(ndb_nodeids) do
if nname==node.name then
nid=tnid
end
end
if not nid then
nid=#ndb_nodeids+1
ndb_nodeids[nid]=node.name
end
local resid = (nid * 4) + (l2b(node.param2 or 0))
ndbset(pos.x, pos.y, pos.z, resid )
--atdebug("nodedb: updating node", pos, "stored nid",nid,"assigned",ndb_nodeids[nid],"resulting cid",resid)
advtrains.invalidate_all_paths(pos)
else
--at this position there is no longer a node that needs to be tracked.
