.

exp_legacy/module/config/vlayer.lua

@@ -11,7 +11,8 @@ return {
     modded_auto_downgrade = true, --- @setting modded_auto_downgrade When true modded items will be converted into their base game equivalent, original items can not be recovered
     power_on_space = true, --- @setting power_on_space When true allow on spaceship
     power_on_space_research = {
-        ["research-productivity"] = 10
+        name = "research-productivity",
+        level = 10
     },
 
     mimic_surface = "nauvis", --- @setting mimic_surface Surface name/index the vlayer will copy its settings from, use nil to use the settings below

exp_legacy/module/locale/en/gui.cfg

@@ -289,6 +289,7 @@ control-type-energy=Energy
 control-type-circuit=Circuit
 control-type-storage-input=Storage Input
 control-type-storage-output=Storage Output
+power-on-space-research=You need to research [technology=__1__] for the space platform vlayer feature.
 enter=Entered vlayer selection mode.
 exit=Exited vlayer selection mode.
 

exp_legacy/module/locale/zh-CN/gui.cfg

@@ -289,6 +289,7 @@ control-type-energy=電力
 control-type-circuit=回路
 control-type-storage-input=放入箱
 control-type-storage-output=提取箱
+power-on-space-research=你要研究 [technology=__1__] 才可使用太空平台 vlayer 功能。
 enter=現在進入 vlayer 區域選擇
 exit=已進入 vlayer 區域選擇
 

exp_legacy/module/locale/zh-TW/gui.cfg

@@ -289,6 +289,7 @@ control-type-energy=電力
 control-type-circuit=回路
 control-type-storage-input=放入箱
 control-type-storage-output=提取箱
+power-on-space-research=你要研究 [technology=__1__] 才可使用太空平台 vlayer 功能。
 enter=現在進入 vlayer 區域選擇
 exit=已進入 vlayer 區域選擇
 

exp_legacy/module/modules/gui/vlayer.lua

@@ -87,7 +87,11 @@ Selection.on_selection(SelectionConvertArea, function(event)
     local entities
 
     if config.power_on_space and event.surface and event.surface.platform and target == "energy" then
-        entities = event.surface.find_entities_filtered{ area = area, name = "constant-combinator", force = player.force }
+        if player.force.technologies[config.power_on_space_research.name].level >= config.power_on_space_research.level then
+            entities = event.surface.find_entities_filtered{ area = area, name = "constant-combinator", force = player.force }
+        else
+            player.print{ "vlayer.power-on-space-research", config.power_on_space_research.name }
+        end
     else
         entities = event.surface.find_entities_filtered{ area = area, name = "steel-chest", force = player.force }
     end