Minor bug fixes

modules/game_prey/prey.lua

@@ -60,6 +60,7 @@ function timeleftTranslation(timeleft, forPreyTimeleft) -- in seconds
 end
   
 function init()
+  connect(g_game, {
     onGameStart = check,
     onGameEnd = hide,
     onResourceBalance = onResourceBalance,
@@ -73,11 +74,14 @@ function init()
   })
 
   preyWindow = g_ui.displayUI('prey')
-  preyWindow:hide()
+  preyWindow:hide()
+  if g_game.isOnline() then
+    check()
   end
 end
 
 function terminate()
+  disconnect(g_game, {
     onGameStart = check,
     onGameEnd = hide,
     onResourceBalance = onResourceBalance,
@@ -89,7 +93,9 @@ function terminate()
     onPreyActive = onPreyActive,
     onPreySelection = onPreySelection
   })
-  
+  
+  if preyButton then
+    preyButton:destroy()
   end
   preyWindow:destroy()
   if msgWindow then
@@ -97,6 +103,17 @@ function terminate()
     msgWindow = nil
   end
 end
+
+function check()
+  if g_game.getFeature(GamePrey) then
+    if not preyButton then
+      preyButton = modules.client_topmenu.addRightGameToggleButton('preyButton', tr('Preys'), '/images/topbuttons/prey', toggle)
+    end
+  elseif preyButton then
+    preyButton:destroy()
+    preyButton = nil
+  end
+end
 
 function hide()
   preyWindow:hide()
@@ -106,6 +123,9 @@ function hide()
   end
 end
 
+function show()
+  if not g_game.getFeature(GamePrey) then
+    return hide()
   end
   preyWindow:show()
   preyWindow:raise()