Factorio: content update

Energy Link:
  * Transfer and Storage increased by 10X
  * Cost of building increased by roughly 10X
  * This is a way to address their effect on performance, as users now need a tenth of them to get the same throughput, it also differentiates them from Accumulators
5 new Traps:
  * Teleport Trap
  * Grenade Trap
  * Cluster Grenade Trap
  * Artillery Trap
  * Atomic Rocket Trap
When max science is lower than min science, the two are now swapped.
Max Evolution Trap count was changed from 25 -> 10.
New option: Ingredients Offset
  * When creating random recipes, use this many more or less ingredients in the new recipe.

worlds/factorio/data/mod/lib.lua

@@ -1,32 +1,3 @@
-function filter_ingredients(ingredients, ingredient_filter)
-    local new_ingredient_list = {}
-    for _, ingredient_table in pairs(ingredients) do
-        if ingredient_filter[ingredient_table[1]] then -- name of ingredient_table
-            table.insert(new_ingredient_list, ingredient_table)
-        end
-    end
-
-    return new_ingredient_list
-end
-
-function add_ingredients(ingredients, added_ingredients)
-    local new_ingredient_list = table.deepcopy(ingredients)
-    for new_ingredient, count in pairs(added_ingredients) do
-        local found = false
-        for _, old_ingredient in pairs(ingredients) do
-            if old_ingredient[1] == new_ingredient then
-                found = true
-                break
-            end
-        end
-        if not found then
-            table.insert(new_ingredient_list, {new_ingredient, count})
-        end
-    end
-
-    return new_ingredient_list
-end
-
 function get_any_stack_size(name)
     local item = game.item_prototypes[name]
     if item ~= nil then
@@ -50,4 +21,19 @@ function split(s, sep)
     string.gsub(s, pattern, function(c) fields[#fields + 1] = c end)
 
     return fields
+end
+
+function random_offset_position(position, offset)
+    return {x=position.x+math.random(-offset, offset), y=position.y+math.random(-1024, 1024)}
+end
+
+function fire_entity_at_players(entity_name, speed)
+    for _, player in ipairs(game.forces["player"].players) do
+        current_character = player.character
+        if current_character ~= nil then
+            current_character.surface.create_entity{name=entity_name,
+                position=random_offset_position(current_character.position, 128),
+                target=current_character, speed=speed}
+        end
+    end
 end