From f952ee47401efc2202eb8a1cdfa84ec0d8bd04e2 Mon Sep 17 00:00:00 2001
From: Anthony Zhang <azhang9@gmail.com>
Date: Thu, 30 May 2013 19:05:45 -0400
Subject: Block queue doesn't lag anymore on slow operations like digging and
 placing nodes, better and more efficient //fixlight.

---
 worldedit/queue.lua | 50 ++++++++++++++++++++++++++++++--------------------
 1 file changed, 30 insertions(+), 20 deletions(-)

(limited to 'worldedit/queue.lua')

diff --git a/worldedit/queue.lua b/worldedit/queue.lua
index 77b0fdc..8264ebf 100644
--- a/worldedit/queue.lua
+++ b/worldedit/queue.lua
@@ -2,29 +2,39 @@ worldedit = worldedit or {}
 
 worldedit.queue = {}
 
-worldedit.ENABLE_QUEUE = true
-worldedit.BLOCKS_PER_GLOBALSTEP = 512
+worldedit.ENABLE_QUEUE = true --enable the WorldEdit block queue
+worldedit.MAXIMUM_TIME = 0.08 --maximum time each step alloted for WorldEdit operations
 
 minetest.register_globalstep(function(dtime)
-    i = 1
-    while i <= #worldedit.queue and i <= worldedit.BLOCKS_PER_GLOBALSTEP do
-        idx = (#worldedit.queue + 1) - i -- we use the last entry, so we don't spend days moving stuff in the table because we removed the first entry
-        if worldedit.queue[idx].t == "set_node" then
-            minetest.env:set_node(worldedit.queue[idx].pos, worldedit.queue[idx].node)
-        elseif worldedit.queue[idx].t == "remove_node" then
-            minetest.env:remove_node(worldedit.queue[idx].pos)
-        elseif worldedit.queue[idx].t == "place_node" then
-            minetest.env:place_node(worldedit.queue[idx].pos, worldedit.queue[idx].node)
-        elseif worldedit.queue[idx].t == "dig_node" then
-            minetest.env:dig_node(worldedit.queue[idx].pos)
-        elseif worldedit.queue[idx].t == "add_entity" then
-            minetest.env:add_entity(worldedit.queue[idx].pos, worldedit.queue[idx].name)
-        elseif worldedit.queue[idx].t == "add_item" then
-            minetest.env:add_item(worldedit.queue[idx].pos, worldedit.queue[idx].item)
-        elseif worldedit.queue[idx].t == "meta_from_table" then
-            minetest.env:get_meta(worldedit.queue[idx].pos):from_table(worldedit.queue[idx].table)
+    local i = 1
+    local elapsed = 0
+    local env = minetest.env
+    while i <= #worldedit.queue and elapsed <= worldedit.MAXIMUM_TIME do
+	local idx = (#worldedit.queue + 1) - i
+	local entry = worldedit.queue[idx] --we use the last entry, so we don't spend days moving stuff in the table because we removed the first entry
+        if entry.t == "set_node" then
+            env:set_node(entry.pos, entry.node)
+	    elapsed = elapsed + 0.0002
+        elseif entry.t == "remove_node" then
+            env:remove_node(entry.pos)
+	    elapsed = elapsed + 0.0002
+        elseif entry.t == "place_node" then
+            env:place_node(entry.pos, entry.node)
+	    elapsed = elapsed + 0.001
+        elseif entry.t == "dig_node" then
+            env:dig_node(entry.pos)
+	    elapsed = elapsed + 0.001
+        elseif entry.t == "add_entity" then
+            env:add_entity(entry.pos, entry.name)
+	    elapsed = elapsed + 0.005
+        elseif entry.t == "add_item" then
+            env:add_item(entry.pos, entry.item)
+	    elapsed = elapsed + 0.005
+        elseif entry.t == "meta_from_table" then
+            env:get_meta(entry.pos):from_table(entry.table)
+	    elapsed = elapsed + 0.0002
         else
-            print("Unknown queue event type: " .. worldedit.queue[idx].t)
+            print("Unknown queue event type: " .. entry.t)
         end
         table.remove(worldedit.queue, idx)
         i = i + 1
-- 
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