From 6e9a052aa877222a1a494ddcdc5507b5bcc3ea68 Mon Sep 17 00:00:00 2001
From: ubq323 <ubq323@ubq323.website>
Date: Sun, 2 Apr 2023 01:28:21 +0100
Subject: minor cleaning

---
 server/chunk.lua  |  5 ++---
 server/db.lua     |  4 ++++
 server/map.lua    |  5 +++--
 server/server.lua | 25 ++++---------------------
 4 files changed, 13 insertions(+), 26 deletions(-)

diff --git a/server/chunk.lua b/server/chunk.lua
index 852f1fe..bb30945 100644
--- a/server/chunk.lua
+++ b/server/chunk.lua
@@ -34,12 +34,11 @@ function ChunkS.load_from_disk(cls,cp)
 	return self
 end
 
-function ChunkS.save_if_dirty(self)
+function ChunkS.save_if_dirty(self,txn)
 	if self.dirty then
 		print("saving chunk",self.cp)
-		local txn,dbi = db.get_db('chunks',true)
+		local dbi = txn:open'chunks'
 		dbi[tostring(self.cp)] = self:data_packet()
-		txn:commit()
 		self.dirty = false
 	end
 end
diff --git a/server/db.lua b/server/db.lua
index 4208aeb..a4cd8a7 100644
--- a/server/db.lua
+++ b/server/db.lua
@@ -7,9 +7,13 @@ local function get_db(dbname, writeable)
 	local the_db = assert(txn:open(dbname), "couldn't open db")
 	return txn,the_db
 end
+local function txn(writeable)
+	return assert(env:txn_begin(writeable), "couldn't begin txn")
+end
 
 	
 return {
 	env=env,
+	txn=txn,
 	get_db=get_db,
 }
diff --git a/server/map.lua b/server/map.lua
index 3d7f377..7b2e62b 100644
--- a/server/map.lua
+++ b/server/map.lua
@@ -28,13 +28,14 @@ function MapS.obtain(self,cp)
 	end
 	
 end
-function MapS.save_chunk(self,cp)
+
+function MapS.save_chunk(self,cp,txn)
 	-- will only actually save anything if anything needs saving.
 	-- any attempt to save not-loaded chunks is silently ignored
 	local ch = self:chunk(cp)
 	if not ch then return end
 
-	ch:save_if_dirty()
+	ch:save_if_dirty(txn)
 end
 
 return {MapS=MapS}
diff --git a/server/server.lua b/server/server.lua
index 2da7988..701551d 100644
--- a/server/server.lua
+++ b/server/server.lua
@@ -9,6 +9,7 @@ local MapS = require"map".MapS
 local Player=require'player'.Player
 local posix_time = require"posix.time"
 local posix_signal = require"posix.signal"
+local db = require'db'
 
 math.randomseed(os.time())
 
@@ -138,29 +139,9 @@ local function timenow()
 	-- this discards some precision but i don't care
 	return tv.tv_sec + (tv.tv_nsec/1000000000)
 end
--- do something only every x seconds
--- returns function(dt) -> bool
--- which returns true if you should, and false otherwise
-local function every(interval)
-	local time_since = interval+100
-	return function(dt)
-		time_since = time_since + dt
-		if time_since > interval then
-			time_since = 0
-			return true
-		else
-			return false
-		end
-	end
-end
 
 local tick_interval = 1 -- seconds
 local last_tick_time = timenow()
-
--- average tps calculation
-local dts = {}
-local ndt = 1
-local ndts = 100
 local ntick = 0
 
 
@@ -180,13 +161,15 @@ local function player_near_chunk(cp)
 end
 
 local function save_things()
+	local txn = db.txn(true)
 	for cp,ch in map:iter_chunks() do
-		map:save_chunk(cp)
+		map:save_chunk(cp,txn)
 		if not player_near_chunk(cp) then
 			-- print("unloading chunk",cp)
 			map:remove_chunk(cp)
 		end
 	end
+	txn:commit()
 end
 
 local function tick(ntick)
-- 
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