Bugfixes and small additions (#109)

* Add a converter for Player charsets in metadara
* Fixed Sprite position editor not working with new shadow filenames. Also added check for custom shadows
* Fixed pbTrainerBattleCore not working with NPC Trainer argument
* Fixed typo which caused crash with old trainers.txt format
* Fixed reference to non-existent variable which crashed the trainertype editor

Data/Scripts/012_Overworld/002_Battle triggering/001_Overworld_BattleStarting.rb

@@ -368,11 +368,11 @@ def pbTrainerBattleCore(*args)
   foePartyStarts = []
   for arg in args
     if arg.is_a?(NPCTrainer)
-      foeTrainers.push(arg[0])
+      foeTrainers.push(arg)
       foePartyStarts.push(foeParty.length)
-      arg[0].party.each { |pkmn| foeParty.push(pkmn) }
-      foeEndSpeeches.push(arg[0].lose_text)
-      foeItems.push(arg[0].items)
+      arg.party.each { |pkmn| foeParty.push(pkmn) }
+      foeEndSpeeches.push(arg.lose_text)
+      foeItems.push(arg.items)
     elsif arg.is_a?(Array)   # [trainer type, trainer name, ID, speech (optional)]
       trainer = pbLoadTrainer(arg[0],arg[1],arg[2])
       pbMissingTrainer(arg[0],arg[1],arg[2]) if !trainer

Data/Scripts/012_Overworld/004_Overworld_FieldMoves.rb

@@ -834,7 +834,7 @@ def pbSweetScent
   end
   viewport.dispose
   enctype = $PokemonEncounters.encounter_type
-  if enctype < 0 || !$PokemonEncounters.encounter_possible_here? ||
+  if enctype || !$PokemonEncounters.encounter_possible_here? ||
      !pbEncounter(enctype)
     pbMessage(_INTL("There appears to be nothing here..."))
   end