Fix issues regarding initializing blueprint mirroring buttons.

Author: dewiniaid

README.md

@@ -43,6 +43,9 @@ discussion page, and messages posted there will likely be ignored.**
 
 ## Changelog
 
+### 0.3.2 (2019-03-02)
+* Fix issues (including a possible crash) involving setting up the blueprint mirroring buttons in a new save.
+
 ### 0.3.1 (2019-02-26)
 * Fix default keybinds for mirroring
 * Add blueprint nudging.  SHIFT + arrow-on-numpad will 'nudge' a blueprint 1 tile in the selected direction.  (Blueprints with rails will be nudged 2 tiles.)

changelog.txt

@@ -1,10 +1,18 @@
+---------------------------------------------------------------------------------------------------
+Version: 0.3.2
+Date: 02. 03. 2019
+  Bugfixes:
+    - Fix blueprint mirroring buttons not appearing when enabled in a new save until the mod configuration changed.
+    - Fix crash involving blueprint mirroring buttons in a new save when they were disabled.
+
 ---------------------------------------------------------------------------------------------------
 Version: 0.3.1
 Date: 26. 02. 2019
   Changes:
-    - Fix default keybinds for mirroring
     - Add blueprint nudging.  SHIFT + arrow-on-numpad will 'nudge' a blueprint 1 tile in the selected direction.
       (Blueprints with rails will be nudged 2 tiles.)
+  Bugfixes:
+    - Fix default keybinds for mirroring
 
 ---------------------------------------------------------------------------------------------------
 Version: 0.3.0

control.lua

@@ -23,3 +23,8 @@ script.on_event(defines.events.on_player_removed, function(event)
     Util.clear_all_items(event.player_index)
     global.playerdata[event.player_index] = nil
 end)
+
+script.on_event(defines.events.on_player_created, function(event)
+    Flip.setup_gui(game.players[event.player_index])
+end)
+

info.json

@@ -1,6 +1,6 @@
 {
     "name": "BlueprintExtensions",
-    "version": "0.3.1",
+    "version": "0.3.2",
     "title": "Blueprint Extensions",
     "author": "Dewin",
     "contact": "https://github.com/dewiniaid/BlueprintExtensions",

modules/flip.lua

@@ -70,8 +70,8 @@ function Flip.setup_gui(player)
         }
         button.visible = true
     elseif not show then
-        flow.BPEX_Flip_H.destroy()
-        flow.BPEX_Flip_V.destroy()
+        if flow.BPEX_Flip_H then flow.BPEX_Flip_H.destroy() end
+        if flow.BPEX_Flip_V then flow.BPEX_Flip_V.destroy() end
     end
     --
     --    local top = player.gui.top