diff --git a/LAUNCH compile.cmd b/LAUNCH compile.cmd
index 6cdfc5a..ef96224 100644
--- a/LAUNCH compile.cmd	
+++ b/LAUNCH compile.cmd	
@@ -250,6 +250,8 @@ echo Skipping packing. "%mapfile%.bspzip" not found.
 :extrabspzip_ok
 
 
+
+
 :ldr
 @echo ================= Generating LDR Cubemaps =================
 @cd /d "%CMD_LC_ROOT%"
@@ -266,16 +268,34 @@ call extras\gmodcommander.cmd cubemaps_ldr "%mapname%"
 
 :navmesh
 @echo ================= Generating navmesh =================
+
+@if not exist "%mapfolder%\%mapfile%.lm.txt" @goto navmesh_noseeds
+
 @cd /d "%CMD_LC_ROOT%"
+@copy /Y "%mapfolder%\%mapfile%.lm.txt" "%GameDir%"\data\navmesh_landmarks.txt
 @call extras\gmodcommander.cmd navmesh "%mapname%"
 @if ERRORLEVEL 1 goto failed
 @cd /d "%CMD_LC_ROOT%"
 
-
-@echo ================= bzip2 Packing ================= 
-start /low /min bzip2 -kf -9 "%GameDir%\maps\%mapname%.bsp"
-start /low /min bzip2 -kf -9 "%GameDir%\maps\graphs\%mapname%.ain"
-start /low /min bzip2 -kf -9 "%GameDir%\maps\%mapname%.nav"
+goto navmesh_end
+:navmesh_noseeds
+@echo SKIPPING: Seed file missing "%mapfolder%\%mapfile%.lm.txt"
+:navmesh_end
+
+:docompress
+@echo ================= Compressing to .bz2 files for fastdl ================= 
+@start /low /min bzip2 -kf -9 "%GameDir%\maps\%mapname%.bsp"
+@start /low /min bzip2 -kf -9 "%GameDir%\maps\graphs\%mapname%.ain"
+
+@set "filename=%GameDir%\maps\%mapname%.nav"
+set size=0
+@for /f %%A in (%filename%) do set size=%%~zA
+@if %size% GTR 2048 @goto navok
+@echo NAVMESH GENERATION FAILED
+@goto navcskip
+:navok
+@start /low /min bzip2 -kf -9 "%GameDir%\maps\%mapname%.nav"
+:navcskip
 
 @echo ================= TESTING MAP (HDR) ================= 
 
diff --git a/config.bat b/config.bat
index ccd5f25..a7179e6 100644
--- a/config.bat
+++ b/config.bat
@@ -44,7 +44,7 @@
 @set mapwsid=0
 
 @rem no addons on gmodcommander by default
-set GCNOADDONS=-noaddons
+@set GCNOADDONS=-noaddons
 
 @rem Should the compiler bundle missing materials
 @set NO_MISSING_BUNDLING=0
diff --git a/extras/gmodcommander.cmd b/extras/gmodcommander.cmd
index 4ae30f0..34953ca 100644
--- a/extras/gmodcommander.cmd
+++ b/extras/gmodcommander.cmd
@@ -17,6 +17,9 @@ copy /Y mapcomp_write_missing.lua "%GameDir%"\lua\autorun\client\mapcomp_write_m
 copy /Y navmesh.lua "%GameDir%"\lua\autorun\server\navmesh.lua > nul
 @if ERRORLEVEL 1 goto fail
 
+copy /Y landmark.lua "%GameDir%"\lua\includes\modules\landmark.lua > nul
+@if ERRORLEVEL 1 goto fail
+
 @cd /D %GameExeDir%
 @If "%1"=="missing" @goto missing
 @If "%1"=="cubemaps_ldr" @goto cubemaps_ldr
diff --git a/extras/landmark.lua b/extras/landmark.lua
new file mode 100644
index 0000000..e972fea
--- /dev/null
+++ b/extras/landmark.lua
@@ -0,0 +1,261 @@
+local _M = {}
+local landmark=_M
+local _MM = {}
+setmetatable(_M,_MM)
+function _MM.__call(self,id)
+	return _M.get(id)
+end
+
+--- Parse landmarks ---
+local function int(str,endian,signed) -- use length of string to determine 8,16,32,64 bits
+    local t={str:byte(1,-1)}
+    if endian==true then --reverse bytes
+        local tt={}
+        for k=1,#t do
+            tt[#t-k+1]=t[k]
+        end
+        t=tt
+    end
+    local n=0
+    for k=1,#t do
+        n=n+t[k]*2^((k-1)*8)
+    end
+    if signed then
+        n = (n > 2^(#t*8-1) -1) and (n - 2^(#t*8)) or n -- if last bit set, negative.
+    end
+    return n
+end
+
+
+local landmarks
+local function getlandmarks()
+	if landmarks then return landmarks end
+	
+	local name = 'maps/'..game.GetMap()..'.bsp'
+
+
+	local f = file.Open(name,"rb","GAME")
+
+	assert(f:Read(4)=='VBSP',"not a bsp") -- ident
+
+	local version        = int(f:Read(4),false,false)
+	assert(version==20,"new version?")
+
+	-- entity info
+	local pos = int(f:Read(4))
+	local len = int(f:Read(4))
+	local ver = int(f:Read(4))
+	local fourCC = f:Read(4)
+	f:Seek(pos)
+	local dat = f:Read(len)
+
+	f:Close()
+
+	local lastfindpos=30
+	for _=1,10000 do
+		local l,r=dat:find('"info_landmark"\n',lastfindpos,true)
+		if l==nil then
+			break
+		end
+		
+		--print(l,r,dat:sub(l-100,r+100))
+			
+		local L
+		for i=l,l-1000,-1 do
+			local char = dat:sub(i,i)
+			if char=='{' then
+				if dat:sub(i-1,i-1)~="\n" then error"eek" end
+				 
+				L=i
+				break
+			end
+		end
+
+		local R=dat:find("}\n",r,true)
+		R=R and R+1
+		
+		if L and R then
+			landmarks = landmarks or {}
+			local t = util.KeyValuesToTable('"x"\n'..dat:sub(L,R))
+			if not t or not t.classname then continue end
+			local name = t and t.targetname
+			local classname=name and t.classname=="info_landmark"
+			if classname and name then
+				landmarks[name]=Vector(t.origin)
+			end
+			
+			lastfindpos=R+4
+			--return
+		else
+			lastfindpos=r+1
+		end
+		
+	end
+	if not landmarks then
+		landmarks = {}
+	end
+
+	return landmarks
+
+end
+
+_M.getlandmarks=getlandmarks
+
+_M.getall=getlandmarks
+local get get = function(id)
+	if landmarks==nil then
+		getlandmarks()
+		get = function(id) return landmarks[id] end
+		_M.get = get
+	end
+	return landmarks[id]
+end
+_M.get = get
+
+function _M.toworld(id,vec)
+	if landmarks==nil then
+		getlandmarks()
+	end
+	local lmvec = landmarks[id]
+	if not lmvec then return end
+	return lmvec+vec
+end
+function _M.fromworld(id,vec)
+	if landmarks==nil then
+		getlandmarks()
+	end
+	local lmvec = landmarks[id]
+	if not lmvec then return end
+	return vec-lmvec
+end
+
+local added
+function _M.needcs()
+	if added then return end
+	added = true
+	
+	if SERVER then
+		AddCSLuaFile("includes/modules/landmark.lua") -- just () does not work!?
+	end
+	
+end
+
+local function nearest(start_pos)
+	local closest,closest_pos,closest_dist=nil,nil,math.huge
+	
+	for name,pos in next,getlandmarks() do
+		local dist = start_pos:DistToSqr(pos)
+		if dist<closest_dist then
+			closest	,closest_pos,closest_dist =
+			name	,pos		,dist
+		end
+	end
+	return closest,closest_pos,math.sqrt(closest_dist)
+end
+_M.nearest = nearest
+
+_G.landmark=_M
+
+
+local new_LMVector = {  }
+
+_G.LMVector = new_LMVector
+_M.LMVector = new_LMVector
+
+-- LMVector(worldpos) -- closest landmark
+-- LMVector(worldpos,lmname) -- landmark name
+-- lvec:vec() -- local
+-- lvec:pos() -- world
+-- lvec:inworld()
+
+local meta = {}
+local static = {}
+
+-- DEPRECIATED
+function static:fromtable(tbl)
+	return landmark.get(tbl[2])
+		and setmetatable({tbl[1]*1,tbl[2]}, nt)
+end
+	
+local mt = {__index = meta}
+setmetatable(new_LMVector, {
+	__call = function(_,worldpos,landmark_name,from_local,b,c)
+		if istable(worldpos) then
+			local t = worldpos
+			worldpos = Vector(t[1],t[2],t[3])
+			landmark_name = t[4]
+			from_local=true
+		end
+		
+		if isnumber(worldpos) then
+			worldpos = Vector(worldpos,landmark_name,from_local)
+			landmark_name = b
+			from_local = c
+		end
+		
+		
+		if not landmark_name then error("LMVector(no landmark specified)",2) end
+		local landmark_pos
+		if landmark_name == true then
+			if from_local then
+				error("LMVector(Invalid call: local and no landmark)",2)
+			end
+			landmark_name,landmark_pos = nearest(worldpos)
+		else
+			landmark_pos = landmark.get(landmark_name)
+		end
+		if not landmark_pos then
+			if from_local then return nil,'missing landmark' end -- local landmarks just return nothing
+			error("Landmark not found",2)
+		end
+		
+		local pos = from_local and worldpos or (worldpos - landmark_pos)
+		return setmetatable({ pos, landmark_name
+							}, mt)
+	end,
+	__index=static
+})
+
+function meta:vec()
+	return self[1]
+end
+function meta:table()
+	local v = self[1]
+	return {v[1],v[2],v[3],self[2]}
+end
+meta.ToTable=meta.table
+
+function meta:pos()
+	return self[1]+get(self[2])
+end
+meta.ToWorld=meta.pos
+meta.LocalToWorld=meta.pos
+meta.toworld=meta.pos
+meta.World=meta.pos
+
+local pos = Vector(0,0,0)
+function meta:tpos()
+	pos:Set(self[1])
+	pos:Add(get(self[2]))
+	return self[1]+get(self[2])
+end
+
+if SERVER then
+	function meta:inworld()
+		return util.IsInWorld(self:tpos())
+	end
+else
+	function meta:inworld()
+		return util.PointContents(self:tpos())~=1
+	end
+end
+meta.InWorld = meta.inworld
+meta.IsInWorld = meta.inworld
+
+function mt:__call(s) return self[1] end
+function mt:__tostring()
+	local v = self[1]
+	return ("LMVector(%s, %s, %s, %q, true)"):format(v[1],v[2],v[3],self[2])
+end
+
+return _M
\ No newline at end of file
diff --git a/extras/navmesh.lua b/extras/navmesh.lua
index 4841df1..f10174e 100644
--- a/extras/navmesh.lua
+++ b/extras/navmesh.lua
@@ -1,4 +1,17 @@
-if GetConVar("con_nprint_bgalpha"):GetString()~="navmesh" then return end
+local navmeshregen
+
+pcall(require,'landmark')
+if not landmark or not landmark.get then
+	system.FlashWindow()
+	print"UNABLE TO LOAD LANDMARK MODULE"
+end
+
+if GetConVar("con_nprint_bgalpha"):GetString()~="navmesh" then
+	navmeshregen=true
+	if GetConVar("con_nprint_bgalpha"):GetString()~="navmeshregen" then
+		return 
+	end
+end
 
 local i=68
 hook.Add("Think","agwegwegg",function()
@@ -7,20 +20,47 @@ hook.Add("Think","agwegwegg",function()
 	hook.Remove("Think","agwegwegg")
 	
 	print"\n!!!!!BUILDING NAVMESH!!!!!!!!\n"
+	if not navmeshregen then
+		if not navmesh.IsLoaded() then navmesh.Load() end
 		
-	if not navmesh.IsLoaded() then navmesh.Load() end
+		if navmesh.IsLoaded() then
+			print"navmesh found, leaving..."
+			RunConsoleCommand("exitgame")
+			return
+		end
+	end
 	
-	if navmesh.IsLoaded() then
-		print"navmesh found, leaving..."
-		RunConsoleCommand("exitgame")
-		return 
+	if not file.Exists("navmesh_landmarks.txt", 'DATA') then
+		print "navmesh_landmarks.txt MISSING"
+		system.FlashWindow()
+		return
 	end
-
+	
 	--TODO
-	local f = file.Read("navmesh_seed.txt",'DATA')
-	for v in (f or ""):gmatch'[^\r\n]+' do
-		if v and v:find"%d %d" then
-			print("seeding",v,navmesh.AddWalkableSeed(Vector(v),Vector(0,0,1)))
+	for lm in file.Read("navmesh_landmarks.txt", 'DATA'):gmatch'[^\r\n]+' do
+		local name, offset = lm:match'^([^%,]+)%,?(.*)$'
+		local err="unknown error"
+		if name then
+			local offset = offset and #offset > 3 and offset:Trim():find"^%d+ %d+ %d+$" and Vector(offset:Trim()) or Vector(0,0,0)
+			local pos = landmark.get(name:Trim())
+
+			if pos then
+				pos = pos + offset
+				local tr = util.TraceLine{
+					start = pos,
+					endpos = pos - Vector(0, 0, 512)
+				}
+				if tr.Hit then 
+					navmesh.AddWalkableSeed(tr.HitPos, tr.HitNormal)
+					debugoverlay.Cross(tr.HitPos,128,120,Color(255,255,255),true)
+					err=false
+				else err="trace did not hit" end
+
+			else err="landmark missing or invalid" end
+		else err="could not parse name" end
+		if err then
+			system.FlashWindow()
+			print(("Adding seed did not succeed: %s %q"):format(err,lm))
 		end
 	end
 	print("begin",navmesh.BeginGeneration())