AI now keeps their last defined Pokémon for last, tweaks to some battle effects based on mechanics generation

Data/Scripts/011_Battle/001_Battler/004_Battler_Statuses.rb

@@ -452,7 +452,7 @@ class PokeBattle_Battler
       return false
     end
     # Terrains immunity
-    if affectedByTerrain? && @battle.field.terrain == :Misty
+    if affectedByTerrain? && @battle.field.terrain == :Misty && Settings::MECHANICS_GENERATION >= 7
       @battle.pbDisplay(_INTL("{1} surrounds itself with misty terrain!",pbThis(true))) if showMessages
       return false
     end

Data/Scripts/011_Battle/002_Move/003_Move_Usage_Calculations.rb

@@ -313,7 +313,7 @@ class PokeBattle_Move
     end
     # Parental Bond's second attack
     if user.effects[PBEffects::ParentalBond]==1
-      multipliers[:base_damage_multiplier] /= 4
+      multipliers[:base_damage_multiplier] /= (Settings::MECHANICS_GENERATION >= 7) ? 4 : 2
     end
     # Other
     if user.effects[PBEffects::MeFirst]

Data/Scripts/011_Battle/002_Move/006_MoveEffects_BattlerStats.rb

@@ -18,6 +18,18 @@ class PokeBattle_Move_RaiseUserAttack2 < PokeBattle_StatUpMove
   end
 end
 
+#===============================================================================
+# If this move KO's the target, increases the user's Attack by 2 stages.
+# (Fell Stinger (Gen 6-))
+#===============================================================================
+class PokeBattle_Move_RaiseUserAttack2IfTargetFaints < PokeBattle_Move
+  def pbEffectAfterAllHits(user, target)
+    return if !target.damageState.fainted
+    return if !user.pbCanRaiseStatStage?(:ATTACK, user, self)
+    user.pbRaiseStatStage(:ATTACK, 2, user)
+  end
+end
+
 #===============================================================================
 # Increases the user's Attack by 3 stages.
 #===============================================================================
@@ -30,7 +42,7 @@ end
 
 #===============================================================================
 # If this move KO's the target, increases the user's Attack by 3 stages.
-# (Fell Stinger)
+# (Fell Stinger (Gen 7+))
 #===============================================================================
 class PokeBattle_Move_RaiseUserAttack3IfTargetFaints < PokeBattle_Move
   def pbEffectAfterAllHits(user,target)

Data/Scripts/011_Battle/003_Battle/002_PokeBattle_Battle.rb

@@ -342,6 +342,18 @@ class PokeBattle_Battle
     return pbAbleCount(idxBattler)==0
   end
 
+  def pbTeamAbleNonActiveCount(idxBattler = 0)
+    inBattleIndices = []
+    eachSameSideBattler(idxBattler) { |b| inBattleIndices.push(b.pokemonIndex) }
+    count = 0
+    eachInTeamFromBattlerIndex(idxBattler) do |pkmn, i|
+      next if !pkmn || !pkmn.able?
+      next if inBattleIndices.include?(idxParty)
+      count += 1
+    end
+    return count
+  end
+
   # For the given side of the field (0=player's, 1=opponent's), returns an array
   # containing the number of able Pokémon in each team.
   def pbAbleTeamCounts(side)

Data/Scripts/011_Battle/003_Battle/006_Battle_Action_Switching.rb

@@ -16,9 +16,11 @@ class PokeBattle_Battle
       return false
     end
     if !pbIsOwner?(idxBattler,idxParty)
+      if partyScene
         owner = pbGetOwnerFromPartyIndex(idxBattler,idxParty)
         partyScene.pbDisplay(_INTL("You can't switch {1}'s Pokémon with one of yours!",
-        owner.name)) if partyScene
+          owner.name))
+      end
       return false
     end
     if party[idxParty].fainted?
@@ -129,7 +131,7 @@ class PokeBattle_Battle
   end
 
   # For choosing a replacement Pokémon when prompted in the middle of other
-  # things happening (U-turn, Baton Pass, in def pbSwitch).
+  # things happening (U-turn, Baton Pass, in def pbEORSwitch).
   def pbSwitchInBetween(idxBattler,checkLaxOnly=false,canCancel=false)
     return pbPartyScreen(idxBattler,checkLaxOnly,canCancel) if pbOwnedByPlayer?(idxBattler)
     return @battleAI.pbDefaultChooseNewEnemy(idxBattler,pbParty(idxBattler))

Data/Scripts/011_Battle/003_BattleHandlers_Abilities.rb

@@ -519,7 +519,8 @@ BattleHandlers::AbilityOnStatLoss.add(:DEFIANT,
 
 BattleHandlers::PriorityChangeAbility.add(:GALEWINGS,
   proc { |ability,battler,move,pri|
-    next pri+1 if battler.hp==battler.totalhp && move.type == :FLYING
+    next pri + 1 if (Settings::MECHANICS_GENERATION <= 6 || battler.hp == battler.totalhp) &&
+                  move.type == :FLYING
   }
 )
 

Data/Scripts/011_Battle/004_AI/003_AI_Switch.rb

@@ -91,7 +91,9 @@ class PokeBattle_AI
     end
     if shouldSwitch
       list = []
+      idxPartyStart, idxPartyEnd = @battle.pbTeamIndexRangeFromBattlerIndex(idxBattler)
       @battle.pbParty(idxBattler).each_with_index do |pkmn,i|
+        next if i == idxPartyEnd - 1   # Don't choose to switch in ace
         next if !@battle.pbCanSwitch?(idxBattler,i)
         # If perish count is 1, it may be worth it to switch
         # even with Spikes, since Perish Song's effect will end
@@ -147,7 +149,9 @@ class PokeBattle_AI
   #=============================================================================
   def pbDefaultChooseNewEnemy(idxBattler,party)
     enemies = []
+    idxPartyStart, idxPartyEnd = @battle.pbTeamIndexRangeFromBattlerIndex(idxBattler)
     party.each_with_index do |_p,i|
+      next if i == idxPartyEnd - 1 && enemies.length > 0   # Ignore ace if possible
       enemies.push(i) if @battle.pbCanSwitchLax?(idxBattler,i)
     end
     return -1 if enemies.length==0

Data/Scripts/011_Battle/004_AI/005_AI_Move_EffectScores.rb

@@ -2021,8 +2021,9 @@ class PokeBattle_AI
       score -= 100 if @battle.trainerBattle?
     #---------------------------------------------------------------------------
     when "SwitchOutUserStatusMove"
-      if !@battle.pbCanChooseNonActive?(user.index)
+      if !@battle.pbCanChooseNonActive?(user.index) ||
-        score -= 80
+         @battle.pbTeamAbleNonActiveCount(user.index) > 1   # Don't switch in ace
+        score -= 100
       else
         score += 40 if user.effects[PBEffects::Confusion]>0
         total = 0
@@ -2042,6 +2043,12 @@ class PokeBattle_AI
         end
       end
     #---------------------------------------------------------------------------
+    when "SwitchOutUserDamagingMove"
+      if !@battle.pbCanChooseNonActive?(user.index) ||
+         @battle.pbTeamAbleNonActiveCount(user.index) > 1   # Don't switch in ace
+        score -= 100
+      end
+    #---------------------------------------------------------------------------
     when "SwitchOutTargetStatusMove"
       if target.effects[PBEffects::Ingrain] ||
          (skill>=PBTrainerAI.highSkill && target.hasActiveAbility?(:SUCTIONCUPS))
@@ -2069,7 +2076,7 @@ class PokeBattle_AI
     #---------------------------------------------------------------------------
     when "SwitchOutUserPassOnEffects"
       if !@battle.pbCanChooseNonActive?(user.index)
-        score -= 80
+        score -= 100
       else
         score -= 40 if user.effects[PBEffects::Confusion]>0
         total = 0
@@ -2089,8 +2096,6 @@ class PokeBattle_AI
         end
       end
     #---------------------------------------------------------------------------
-    when "SwitchOutUserDamagingMove"
-    #---------------------------------------------------------------------------
     when "TrapTargetInBattle"
       score -= 90 if target.effects[PBEffects::MeanLook]>=0
     #---------------------------------------------------------------------------