Bug fixes (#620)

* fixed error on empty regular list

* fixed train kill count

features/player_stats.lua

@@ -23,10 +23,10 @@ local total_player_built_entities = {0}
 local total_biter_kills = {0}
 
 local train_kill_causes = {
-    'locomotive',
-    'cargo-wagon',
-    'fluid-wagon',
-    'artillery-wagon'
+    ['locomotive'] = true,
+    ['cargo-wagon'] = true,
+    ['fluid-wagon'] = true,
+    ['artillery-wagon'] = true
 }
 
 Global.register(
@@ -110,8 +110,8 @@ local function player_died(event)
     local cause_count = causes[cause] or 0
     causes[cause] = cause_count + 1
 
-    if table.contains(train_kill_causes, cause) then
-        total_train_kills = total_train_kills + 1
+    if train_kill_causes[cause] then
+        total_train_kills[1] = total_train_kills[1] + 1
     end
 end
 

features/train_station_names.lua

@@ -1,15 +1,25 @@
 local Event = require 'utils.event'
 
-local function pick_name(event)
+local function pick_name()
     -- Create a weight table comprised of the backer name, a player's name, and a regular's name
     local random_player = table.get_random(game.players, true)
     if not random_player then
         return
     end
+
+    local regulars = global.regulars
+
+    local reg
+    if table.size(regulars) == 0 then
+        reg = nil
+    else
+        reg = {table.get_random(regulars, false, true), 1}
+    end
+
     local name_table = {
-        {event.created_entity.backer_name, 8},
+        {false, 8},
         {random_player.name, 1},
-        {table.get_random(global.regulars, false, true), 1},
+        reg
     }
     return table.get_random_weighted(name_table)
 end
@@ -21,7 +31,7 @@ local function player_built_entity(event)
     end
 
     if entity.name == 'train-stop' then
-        event.created_entity.backer_name = pick_name(event) or event.created_entity.backer_name
+        entity.backer_name = pick_name() or entity.backer_name
     end
 end