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authorGabriel Pérez-Cerezo <gabriel@gpcf.eu>2019-07-23 20:15:37 +0200
committerGabriel Pérez-Cerezo <gabriel@gpcf.eu>2019-07-23 20:15:37 +0200
commit95fb122eca46c93c8a2545fe1baf4e1bea9d6e6b (patch)
treeca8ab862975010bea1fd149e681a27c3bba71787 /advtrains
parentb5e8068a99f9bf1538589614624d05c7614f13cb (diff)
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New version 3 save system.
This new save system exists to split up the save file into several smaller ones, to bypass lua limitations.
Diffstat (limited to 'advtrains')
-rw-r--r--advtrains/init.lua228
1 files changed, 146 insertions, 82 deletions
diff --git a/advtrains/init.lua b/advtrains/init.lua
index 2bcfb0c..c5604fd 100644
--- a/advtrains/init.lua
+++ b/advtrains/init.lua
@@ -206,85 +206,155 @@ local MDS_interlocking, MDS_lines
advtrains.fpath=minetest.get_worldpath().."/advtrains"
dofile(advtrains.modpath.."/log.lua")
-
-function advtrains.avt_load()
- local file, err = io.open(advtrains.fpath, "r")
+function advtrains.read_component(name)
+ local path = advtrains.fpath.."_"..name
+ minetest.log("action", "[advtrains] loading "..path)
+ local file, err = io.open(path, "r")
if not file then
- minetest.log("warning", " Failed to read advtrains save data from file "..advtrains.fpath..": "..(err or "Unknown Error"))
+ minetest.log("warning", " Failed to read advtrains save data from file "..path..": "..(err or "Unknown Error"))
minetest.log("warning", " (this is normal when first enabling advtrains on this world)")
- else
- local tbl = minetest.deserialize(file:read("*a"))
- if type(tbl) == "table" then
- if tbl.version then
- --congrats, we have the new save format.
- advtrains.trains = tbl.trains
- --Save the train id into the train table to avoid having to pass id around
- for id, train in pairs(advtrains.trains) do
- train.id = id
- end
- advtrains.wagons = tbl.wagon_save
- advtrains.player_to_train_mapping = tbl.ptmap or {}
- advtrains.ndb.load_data(tbl.ndb)
- advtrains.atc.load_data(tbl.atc)
- if advtrains.interlocking then
- advtrains.interlocking.db.load(tbl.interlocking)
- else
- MDS_interlocking = tbl.interlocking
- end
- if advtrains.lines then
- advtrains.lines.load(tbl.lines)
- else
- MDS_lines = tbl.lines
- end
- --remove wagon_save entries that are not part of a train
- local todel=advtrains.merge_tables(advtrains.wagon_save)
- for tid, train in pairs(advtrains.trains) do
- train.id = tid
- for _, wid in ipairs(train.trainparts) do
- todel[wid]=nil
- end
- end
- for wid, _ in pairs(todel) do
- atwarn("Removing unused wagon", wid, "from wagon_save table.")
- advtrains.wagon_save[wid]=nil
+ return
+ end
+ local tbl = minetest.deserialize(file:read("*a"))
+ file:close()
+ return tbl
+end
+
+function advtrains.avt_load()
+ -- check for new, split advtrains save file
+
+ local version = advtrains.read_component("version")
+ local tbl
+ if version and version == 3 then
+ -- we are dealing with the new, split-up system
+ minetest.log("action", "[advtrains] loading savefiles version 3")
+ local il_save = {
+ tcbs = true,
+ ts = true,
+ signalass = true,
+ rs_locks = true,
+ rs_callbacks = true,
+ influence_points = true,
+ npr_rails = true,
+ }
+ tbl={
+ trains = true,
+ wagon_save = true,
+ ptmap = true,
+ atc = true,
+ ndb = true,
+ lines = true,
+ version = 2,
+ }
+ for i,k in pairs(il_save) do
+ il_save[i] = advtrains.read_component("interlocking_"..i)
+ end
+ for i,k in pairs(tbl) do
+ tbl[i] = advtrains.read_component(i)
+ end
+ tbl["interlocking"] = il_save
+ else
+ local file, err = io.open(advtrains.fpath, "r")
+ if not file then
+ minetest.log("warning", " Failed to read advtrains save data from file "..advtrains.fpath..": "..(err or "Unknown Error"))
+ minetest.log("warning", " (this is normal when first enabling advtrains on this world)")
+ return
+ else
+ tbl = minetest.deserialize(file:read("*a"))
+ file:close()
+ end
+ end
+ if type(tbl) == "table" then
+ if tbl.version then
+ --congrats, we have the new save format.
+ advtrains.trains = tbl.trains
+ --Save the train id into the train table to avoid having to pass id around
+ for id, train in pairs(advtrains.trains) do
+ train.id = id
+ end
+ advtrains.wagons = tbl.wagon_save
+ advtrains.player_to_train_mapping = tbl.ptmap or {}
+ advtrains.ndb.load_data(tbl.ndb)
+ advtrains.atc.load_data(tbl.atc)
+ if advtrains.interlocking then
+ advtrains.interlocking.db.load(tbl.interlocking)
+ else
+ MDS_interlocking = tbl.interlocking
+ end
+ if advtrains.lines then
+ advtrains.lines.load(tbl.lines)
+ else
+ MDS_lines = tbl.lines
+ end
+ --remove wagon_save entries that are not part of a train
+ local todel=advtrains.merge_tables(advtrains.wagon_save)
+ for tid, train in pairs(advtrains.trains) do
+ train.id = tid
+ for _, wid in ipairs(train.trainparts) do
+ todel[wid]=nil
end
+ end
+ for wid, _ in pairs(todel) do
+ atwarn("Removing unused wagon", wid, "from wagon_save table.")
+ advtrains.wagon_save[wid]=nil
+ end
+ else
+ --oh no, its the old one...
+ advtrains.trains=tbl
+ --load ATC
+ advtrains.fpath_atc=minetest.get_worldpath().."/advtrains_atc"
+ local file, err = io.open(advtrains.fpath_atc, "r")
+ if not file then
+ local er=err or "Unknown Error"
+ atprint("Failed loading advtrains atc save file "..er)
else
- --oh no, its the old one...
- advtrains.trains=tbl
- --load ATC
- advtrains.fpath_atc=minetest.get_worldpath().."/advtrains_atc"
- local file, err = io.open(advtrains.fpath_atc, "r")
- if not file then
- local er=err or "Unknown Error"
- atprint("Failed loading advtrains atc save file "..er)
- else
- local tbl = minetest.deserialize(file:read("*a"))
- if type(tbl) == "table" then
- advtrains.atc.controllers=tbl.controllers
- end
- file:close()
+ local tbl = minetest.deserialize(file:read("*a"))
+ if type(tbl) == "table" then
+ advtrains.atc.controllers=tbl.controllers
end
- --load wagon saves
- advtrains.fpath_ws=minetest.get_worldpath().."/advtrains_wagon_save"
- local file, err = io.open(advtrains.fpath_ws, "r")
- if not file then
- local er=err or "Unknown Error"
- atprint("Failed loading advtrains save file "..er)
- else
- local tbl = minetest.deserialize(file:read("*a"))
- if type(tbl) == "table" then
- advtrains.wagon_save=tbl
- end
- file:close()
+ file:close()
+ end
+ --load wagon saves
+ advtrains.fpath_ws=minetest.get_worldpath().."/advtrains_wagon_save"
+ local file, err = io.open(advtrains.fpath_ws, "r")
+ if not file then
+ local er=err or "Unknown Error"
+ atprint("Failed loading advtrains save file "..er)
+ else
+ local tbl = minetest.deserialize(file:read("*a"))
+ if type(tbl) == "table" then
+ advtrains.wagon_save=tbl
end
+ file:close()
end
- else
- minetest.log("error", " Failed to deserialize advtrains save data: Not a table!")
end
- file:close()
+ else
+ minetest.log("error", " Failed to deserialize advtrains save data: Not a table!")
end
end
+advtrains.save_component = function (tbl, name)
+ -- Saves each component of the advtrains file separately
+ --
+ -- required for now to shrink the advtrains db to overcome lua
+ -- limitations.
+ local datastr = minetest.serialize(tbl)
+ if not datastr then
+ minetest.log("error", " Failed to serialize advtrains save data!")
+ return
+ end
+ local temppath = advtrains.fpath.."_"..name.."~"
+ local file, err = io.open(temppath, "w")
+ if err then
+ minetest.log("error", " Failed to write advtrains save data to file "..temppath..": "..(err or "Unknown Error"))
+ return
+ end
+ file:write(datastr)
+ file:close()
+ os.rename(temppath, advtrains.fpath.."_"..name)
+
+end
+
advtrains.avt_save = function(remove_players_from_wagons)
--atprint("saving")
@@ -343,30 +413,24 @@ advtrains.avt_save = function(remove_players_from_wagons)
else
ln_save = MDS_lines
end
+
local save_tbl={
trains = tmp_trains,
wagon_save = advtrains.wagons,
ptmap = advtrains.player_to_train_mapping,
atc = advtrains.atc.save_data(),
ndb = advtrains.ndb.save_data(),
- interlocking = il_save,
lines = ln_save,
- version = 2,
+ version = 3,
}
- local datastr = minetest.serialize(save_tbl)
- if not datastr then
- minetest.log("error", " Failed to serialize advtrains save data!")
- return
+ for i,k in pairs(save_tbl) do
+ advtrains.save_component(k,i)
end
- local temppath = advtrains.fpath.."~"
- local file, err = io.open(temppath, "w")
- if err then
- minetest.log("error", " Failed to write advtrains save data to file "..temppath..": "..(err or "Unknown Error"))
- return
+
+ for i,k in pairs(il_save) do
+ advtrains.save_component(k,"interlocking_"..i)
end
- file:write(datastr)
- file:close()
- os.rename(temppath, advtrains.fpath)
+
if DUMP_DEBUG_SAVE then
local file, err = io.open(advtrains.fpath.."_DUMP", "w")
if err then