Add setting for infinite research and reduce cost

crushing-industry-productivity-research/locale/en/strings.cfg

@@ -3,3 +3,9 @@ ore-crushing-productivity=Ore crushing productivity
 
 [modifier-description]
 change-recipe-productivity=__1__ productivity: __2__
+
+[mod-setting-name]
+crushing-industry-productivity-research-infinite=Infinite productivity research
+
+[mod-setting-description]
+crushing-industry-productivity-research-infinite=Productivity research is infinite instead of being capped to level 6 (which results in 50% productivity).

crushing-industry-productivity-research/prototypes/content/technology.lua

@@ -1,5 +1,7 @@
 local icons = util.technology_icon_constant_recipe_productivity(data.raw.technology["ore-crushing"].icon)
 
+local infinite = settings.startup["crushing-industry-productivity-research-infinite"].value
+
 data:extend({
     {
         type = "technology",
@@ -32,7 +34,7 @@ data:extend({
         effects = {},
         prerequisites = { "ore-crushing-productivity-1", mods["space-age"] and "space-science-pack" or "production-science-pack" },
         unit = {
-            count = 1000,
+            count = 750,
             ingredients = {
                 { "automation-science-pack", 1 },
                 { "logistic-science-pack",   1 },
@@ -47,12 +49,12 @@ data:extend({
         icons = icons,
         essential = false,
         level = 3,
-        max_level = 6,
+        max_level = infinite and "infinite" or 6,
         show_levels_info = true,
         effects = {},
         prerequisites = { "ore-crushing-productivity-2", "production-science-pack", "space-science-pack" },
         unit = {
-            count_formula = "2^(L-2)*1000",
+            count_formula = "2^(L-3)*1000",
             ingredients = {
                 { "automation-science-pack", 1 },
                 { "logistic-science-pack",   1 },

crushing-industry-productivity-research/settings.lua

@@ -0,0 +1,9 @@
+data:extend({
+    {
+        type = "bool-setting",
+        name = "crushing-industry-productivity-research-infinite",
+        setting_type = "startup",
+        default_value = false,
+        order = "a"
+    }
+})

crushing-industry-productivity-research/util.lua

@@ -1 +0,0 @@
-mod_utilmod_utilmod_utilmod_util