Fix up various bugs for 5.4.0 compat, which is minimal supported version

api/lava_furnace.lua

@@ -122,7 +122,7 @@ local function useLava(meta, totalLavaUse, totalTime, runningTime, elapsed, isNe
   if remainigTime <= 0 then
     lavaUse = math.max(0, totalLavaUse - lavaUsedSoFar) -- use up all that's left
   else
-    lavaUse = math.round(totalLavaUse * elapsed / totalTime)
+    lavaUse = logistica.round(totalLavaUse * elapsed / totalTime)
   end
   if currAmount - lavaUse < 0 then
     return nil -- not enough lava in tank
@@ -150,7 +150,7 @@ end
 local function common_formspec(pos, meta)
   local currLava = meta:get_int(META_LAVA_IN_TANK)
   local lavaCap = get_lava_capacity(pos) or 1
-  local lavaPercent = math.round(currLava / lavaCap * 100)
+  local lavaPercent = logistica.round(currLava / lavaCap * 100)
   return "formspec_version[4]"..
       "size[10.5,11]"..
       logistica.ui.background_lava_furnace..
@@ -178,7 +178,7 @@ local function get_inactive_formspec(pos, meta)
 end
 
 local function get_active_formspec(pos, meta, runningTime, totalTime)
-  local timePercent = math.round(runningTime / totalTime * 100)
+  local timePercent = logistica.round(runningTime / totalTime * 100)
   local progressImg = ""
   if timePercent > 0 then
     progressImg = "image[4,2.3;3,1;logistica_lava_furnace_arrow_bg.png^[lowpart:"..timePercent..

logic/vaccuum_chest.lua

@@ -14,7 +14,7 @@ local function add_particle_effect_for_item_taken(itemPos, vaccuumPos)
   for _ = 1, NUM_PARTICLES_PER_COLLECT do
     local startPos = vector.add(itemPos, random_offset())
     local endPos = vector.add(vaccuumPos, vector.new(0, -0.45, 0))
-    local vel = vector.normalize(vector.subtract(endPos, startPos)) * 2
+    local vel = vector.multiply(vector.normalize(vector.subtract(endPos, startPos)), 2)
     minetest.add_particle({
       pos = startPos,
       velocity = vel,

tools/misc.lua

@@ -10,7 +10,7 @@ minetest.register_craftitem("logistica:hyperspanner",{
     local pos = pointed_thing.under
     if not placer or not pos then return end
     local node = minetest.get_node_or_nil(pos)
-    if not node or not logistica.is_machine(node.name) then return end
+    if not node or not (logistica.is_machine(node.name) or logistica.is_cable(node.name)) then return end
     local network = logistica.get_network_name_or_nil(pos) or S("<NONE>")
     logistica.show_popup(
       placer:get_player_name(), 

util/common.lua

@@ -209,3 +209,10 @@ function logistica.table_to_list_indexed(table, func)
   for k,v in pairs(table) do index = index + 1; t[index] = func(k, v) end
   return t
 end
+
+function logistica.round(x)
+	if x >= 0 then
+		return math.floor(x + 0.5)
+	end
+	return math.ceil(x - 0.5)
+end