Calculate energy share relative to node maximum

- Network nodes don’t have a energy limit of the weakest node

sparkcore/energy_distrib.lua

@@ -1,3 +1,11 @@
+local function round(x)
+  if x >= 0 then
+    return math.floor(x+0.5)
+  else
+    math.ceil(x-0.5)
+  end
+end
+
 -- internal var net_master stores all slave nodes
 -- sparktech_net_passive = are used to follow nets, do not count towards energy
 -- sparktech_net_trigger = trigger updates
@@ -13,7 +21,7 @@ local function net_get_slaves(master)
       local cor = string.split(val, ":")
       slaves[#slaves + 1] = { x=tonumber(cor[1]), y=tonumber(cor[2]), z=tonumber(cor[3])}
    end
-   minetest.debug("slaves " .. dump2(slaves))
+   --minetest.debug("slaves " .. dump2(slaves))
    return slaves
 end
 
@@ -22,16 +30,21 @@ local function net_distribute(pos)
   nodes[#nodes +1] = pos
   -- all nodes are in local now
   local energy = 0
-  local nodecount = #nodes
-  for x = 1, nodecount do
+  for x = 1, #nodes do
     energy = energy + minetest.get_meta(nodes[x]):get_int("energy")
   end
+  local max_energy = 0
+  for x = 1, #nodes do
+    max_energy = max_energy + minetest.get_item_group(minetest.get_node(nodes[x]).name, "sparktech_energy_max")
+  end
   
   -- now we know all energy in the system, now to distribute it
   
-  local share = energy / nodecount;
-  for x = 1, nodecount do
-    minetest.get_meta(nodes[x]):set_int("energy",share)
+  local share = energy / max_energy;
+  for x = 1, #nodes do
+    local meta = minetest.get_meta(nodes[x])
+    local node = minetest.get_node(nodes[x])
+    meta:set_int("energy", round(share * minetest.get_item_group(node.name, "sparktech_energy_max")))
   end
 end