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authorBlockhead <jbis1337@hotmail.com>2020-08-16 06:05:11 +1000
committerGabriel PĂ©rez-Cerezo <gabriel@gpcf.eu>2020-08-21 16:02:02 +0200
commit595f26b45010d8e18433daee1c35b12cc2a7eba5 (patch)
treeb7142feeb7bc81386b295613e171333d74242ac1 /advtrains
parentb707f20ba20a7cd542b9ccc9c939f55a9b88400c (diff)
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Deprecate old 4590 crossings
This is done with a task that runs once when the nodedb is loaded. A new field of advtrains_ndb will keep a version integer to indicate migration versions. This introduces verson 1, no version being equivalent to 0. An LBM is also registered to replace the tracks in the world.
Diffstat (limited to 'advtrains')
-rw-r--r--advtrains/nodedb.lua17
1 files changed, 16 insertions, 1 deletions
diff --git a/advtrains/nodedb.lua b/advtrains/nodedb.lua
index 37dc3f7..01bf5a4 100644
--- a/advtrains/nodedb.lua
+++ b/advtrains/nodedb.lua
@@ -30,6 +30,7 @@ local ndb={}
--local variables for performance
local ndb_nodeids={}
local ndb_nodes={}
+local ndb_ver
local function ndbget(x,y,z)
local ny=ndb_nodes[y]
@@ -57,6 +58,16 @@ local path=minetest.get_worldpath()..DIR_DELIM.."advtrains_ndb2"
--nodeids get loaded by advtrains init.lua and passed here
function ndb.load_data(data)
ndb_nodeids = data and data.nodeids or {}
+ ndb_ver = data and data.ver or 0
+ if ndb_ver < 1 then
+ for k,v in pairs(ndb_nodeids) do
+ if v == "advtrains:dtrack_xing4590_st" then
+ cidDepr = k
+ elseif v == "advtrains:dtrack_xing90plusx_45l" then
+ cidNew = k
+ end
+ end
+ end
local file, err = io.open(path, "rb")
if not file then
atwarn("Couldn't load the node database: ", err or "Unknown Error")
@@ -67,6 +78,9 @@ function ndb.load_data(data)
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
+ if (ndb_ver < 1 and cid == cidDepr) then
+ cid = cidNew
+ end
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)
@@ -77,6 +91,7 @@ function ndb.load_data(data)
atlog("nodedb: read", cnt, "nodes.")
file:close()
end
+ ndb_ver = 1
end
--save
@@ -99,7 +114,7 @@ function ndb.save_data()
file:close()
end
os.rename(tmppath, path)
- return {nodeids = ndb_nodeids}
+ return {nodeids = ndb_nodeids, ver = ndb_ver}
end
--function to get node. track database is not helpful here.