diff options
Diffstat (limited to 'pseudoload.lua')
| -rw-r--r-- | pseudoload.lua | 137 |
1 files changed, 76 insertions, 61 deletions
diff --git a/pseudoload.lua b/pseudoload.lua index 532b429..5b2e4a4 100644 --- a/pseudoload.lua +++ b/pseudoload.lua @@ -3,81 +3,89 @@ --responsible for keeping up a database of all rail nodes existant in the world, regardless of whether the mapchunk is loaded. advtrains.trackdb={} ---trackdb[y][x][z]={conn1, conn2, rely1, rely2, railheight} +--trackdb[tt][y][x][z]={conn1, conn2, rely1, rely2, railheight} --serialization format: --(2byte x)(2byte y)(2byte z)(4bits conn1, 4bits conn2)[(plain rely1)|(plain rely2)|(plain railheight)]\n --[] may be missing if 0,0,0 --load initially -advtrains.pl_fpath=minetest.get_worldpath().."/advtrains_trackdb" -local file, err = io.open(advtrains.pl_fpath, "r") -if not file then - local er=err or "Unknown Error" - print("[advtrains]Failed loading advtrains trackdb save file "..er) -else - --custom format to save memory - while true do - local xbytes=file:read(2) - if not xbytes then - break --eof reached - end - local ybytes=file:read(2) - local zbytes=file:read(2) - local x=(string.byte(xbytes[1])-128)*256+(string.byte(xbytes[2])) - local y=(string.byte(ybytes[1])-128)*256+(string.byte(ybytes[2])) - local z=(string.byte(zbytes[1])-128)*256+(string.byte(zbytes[2])) - - local conn1=string.byte(file:read(1)) - local conn1=string.byte(file:read(1)) - - if not advtrains.trackdb[y] then advtrains.trackdb[y]={} end - if not advtrains.trackdb[y][x] then advtrains.trackdb[y][x]={} end - - local rest=file.read("*l") - if rest~="" then - local rely1, rely2, railheight=string.match(rest, "([^|]+)|([^|]+)|([^|]+)") - if rely1 and rely2 and railheight then - advtrains.trackdb[y][x][z]={ - conn1=conn1, conn2=conn2, - rely1=rely1, rely2=rely2, - railheight=railheight - } +for tt, _ in pairs(advtrains.all_traintypes) do + local pl_fpath=minetest.get_worldpath().."/advtrains_trackdb_"..tt + advtrains.trackdb[tt]={} + local file, err = io.open(pl_fpath, "r") + if not file then + local er=err or "Unknown Error" + print("[advtrains]Failed loading advtrains trackdb save file "..er) + else + --custom format to save memory + while true do + local xbytes=file:read(2) + if not xbytes then + break --eof reached + end + local ybytes=file:read(2) + local zbytes=file:read(2) + local x=(string.byte(xbytes[1])-128)*256+(string.byte(xbytes[2])) + local y=(string.byte(ybytes[1])-128)*256+(string.byte(ybytes[2])) + local z=(string.byte(zbytes[1])-128)*256+(string.byte(zbytes[2])) + + local conn1=string.byte(file:read(1)) + local conn1=string.byte(file:read(1)) + + if not advtrains.trackdb[tt][y] then advtrains.trackdb[tt][y]={} end + if not advtrains.trackdb[tt][y][x] then advtrains.trackdb[tt][y][x]={} end + + local rest=file.read("*l") + if rest~="" then + local rely1, rely2, railheight=string.match(rest, "([^|]+)|([^|]+)|([^|]+)") + if rely1 and rely2 and railheight then + advtrains.trackdb[tt][y][x][z]={ + conn1=conn1, conn2=conn2, + rely1=rely1, rely2=rely2, + railheight=railheight + } + else + advtrains.trackdb[tt][y][x][z]={ + conn1=conn1, conn2=conn2 + } + end else - advtrains.trackdb[y][x][z]={ + advtrains.trackdb[tt][y][x][z]={ conn1=conn1, conn2=conn2 } end - else - advtrains.trackdb[y][x][z]={ - conn1=conn1, conn2=conn2 - } end + file:close() end - file:close() end + + function advtrains.save_trackdb() - local file, err = io.open(advtrains.pl_fpath, "w") - if not file then - local er=err or "Unknown Error" - print("[advtrains]Failed saving advtrains trackdb save file "..er) - else - --custom format to save memory - for x,txl in pairs(advtrains.trackdb) do - for y,tyl in pairs(txl) do - for z,rail in pairs(tyl) do - file:write(string.char(math.floor(x/256)+128)..string.char((x%256))) - file:write(string.char(math.floor(y/256)+128)..string.char((y%256))) - file:write(string.char(math.floor(z/256)+128)..string.char((z%256))) - file:write(string.char(rail.conn1)) - file:write(string.char(rail.conn2)) - if (rail.rely1 and rail.rely1~=0) or (rail.rely2 and rail.rely2~=0) or (rail.railheight and rail.railheight~=0) then - file:write(rail.rely1.."|"..rail.rely2.."|"..rail.railheight) + for tt, _ in pairs(advtrains.all_traintypes) do + local pl_fpath=minetest.get_worldpath().."/advtrains_trackdb_"..tt + local file, err = io.open(pl_fpath, "w") + if not file then + local er=err or "Unknown Error" + print("[advtrains]Failed saving advtrains trackdb save file "..er) + else + --custom format to save memory + for x,txl in pairs(advtrains.trackdb[tt]) do + for y,tyl in pairs(txl) do + for z,rail in pairs(tyl) do + file:write(string.char(math.floor(x/256)+128)..string.char((x%256))) + file:write(string.char(math.floor(y/256)+128)..string.char((y%256))) + file:write(string.char(math.floor(z/256)+128)..string.char((z%256))) + file:write(string.char(rail.conn1)) + file:write(string.char(rail.conn2)) + if (rail.rely1 and rail.rely1~=0) or (rail.rely2 and rail.rely2~=0) or (rail.railheight and rail.railheight~=0) then + file:write(rail.rely1.."|"..rail.rely2.."|"..rail.railheight) + end + file:write("\n") end - file:write("\n") end end + file:close() end - file:close() end end @@ -92,7 +100,7 @@ function advtrains.get_rail_info_at(pos, traintype) if not node then --try raildb local rdp=vector.round(rdp) - local dbe=advtrains.trackdb[rdp.y][rdp.x][rdp.z] + local dbe=advtrains.trackdb[traintype][rdp.y][rdp.x][rdp.z] if dbe then return true, dbe.conn1, dbe.conn2, dbe.rely1 or 0, dbe.rely2 or 0, dbe.railheight or 0 else @@ -107,7 +115,7 @@ function advtrains.get_rail_info_at(pos, traintype) --already in trackdb? local rdp=vector.round(rdp) - if not advtrains.trackdb[rdp.y][rdp.x][rdp.z] then--TODO is this write prevention here really needed? + if not advtrains.trackdb[traintype][rdp.y][rdp.x][rdp.z] then--TODO is this necessary? advtrains.trackdb[rdp.y][rdp.x][rdp.z]={ conn1=conn1, conn2=conn2, rely1=rely1, rely2=rely2, @@ -117,5 +125,12 @@ function advtrains.get_rail_info_at(pos, traintype) return true, conn1, conn2, rely1, rely2, railheight end - +function advtrains.reset_trackdb_position(pos) + local rdp=vector.round(pos) + for tt, _ in pairs(advtrains.all_traintypes) do + advtrains.trackdb[tt][rdp.y][rdp.x][rdp.z]=nil + advtrains.get_rail_info_at(pos, tt)--to restore it. + end +end + |