Substitube Held Items Handlers v20 WIP

Battle::ItemEffects::OnBeingHit.add(:OIL,
  proc { |item, user, target, move, battle|
    next if move.calcType != :FIRE
    next if !target.pbCanRaiseStatStage?(:SPEED, target)
    battle.pbCommonAnimation("UseItem", target)
    target.pbRaiseStatStageByCause(:SPEED, 1, target, target.itemName)
    target.pbHeldItemTriggered(item)
  }
)

Battle::ItemEffects::OnBeingHit.add(:ESPSHARE,
  proc { |item, user, target, move, battle|
    next if move.calcType != :PSYCHIC
    next if !target.pbCanRaiseStatStage?(:SPECIAL_ATTACK, target)
    battle.pbCommonAnimation("UseItem", target)
    target.pbRaiseStatStageByCause(:SPECIAL_ATTACK, 1, target, target.itemName)
    target.pbHeldItemTriggered(item)
  }
)

#Beam Mirror - Reduces 3/4 damage from beam attacks, sends 1/4 damage back, consumes item
#Glue Trap - on contact, holder and foe can't escape. (presumably on holder being contacted by move, and not holder attacking)
#Wanna figure out an animation here
#Should it be consumed?
Battle::ItemEffects::OnBeingHit.add(:GLUETRAP,
  proc { |item, user, target, move, battle|
    next if !move.pbContactMove?(user) || !user.affectedByContactEffect?
#    battle.pbCommonAnimation("UseItem", target)
    target.effects[PBEffects::MeanLook] = user.index
    user.effects[PBEffects::MeanLook] = target.index
    battle.pbDisplay(_INTL("{1} and {2} were stuck together by the {3}!", user.pbThis, target.pbThis, target.itemName))
  }
)
#Reset Button - on attack, ability reactivated. (on send out, like intimidate, on hit, like gooey, or end of turn, like speed boost). consumed
#Not sure of triggerEndOfRoundHealing/triggerEndOfRoundWeather
#Maybe double-check how Symbiosis plays with this
Battle::ItemEffects::AfterMoveUseFromTarget.add(:RESETBUTTON,
  proc { |item, battler, user, move, switched_battlers, battle|
    battle.pbCommonAnimation("UseItem", battler)
    battle.pbDisplay(_INTL("{1}'s {2} activated!", battler.pbThis, battler.itemName))
    battler.pbConsumeItem(true, false)
    Battle::AbilityEffects.triggerOnSwitchIn(battler.ability, battler, battle, false)
    Battle::AbilityEffects.triggerOnBeingHit(battler.ability, user, battler, move, battle)
    Battle::AbilityEffects.triggerEndOfRoundEffect(battler.ability, battler, battle)
  }
)
#Magic Balloon - Gives Psychic or Fairy type until holder is attacked, where it'll pop
#Water Balloon - Gives Water type when pops
#Not sure why Symbiosis works like this but that's how Air Balloon is set up
#May revisit fling
Battle::ItemEffects::OnBeingHit.add(:WATERBALLOON,
  proc { |item, user, target, move, battle|
    battle.pbDisplay(_INTL("{1}'s {2} burst! It's soaking wet!", target.pbThis, target.itemName))
    target.pbChangeTypes(:WATER)
    target.pbConsumeItem(false, true)
    target.pbSymbiosis
  }
)
#Dirty Balloon - POison
#Fertilizer - Grass
#Sand Bag - Ground
#Party Hat - any move that would be cured by mental herb becomes random stat boost instead
#Dunce Cap - Any status ailment (not clear if nonvolatile or not) becomes confusion
#Rebreather - prevents secondary poison
#Rubber Stamp - prevents secondary paralyze
#Chill Patch - prevents secondary burn
#Thaw Patch - prevents secondary freeze
#Buzz Band - prevents secondary sleep
#Starry Band - prevents confusion
#Chastity Knot - prevents attraction
#Hall Pass - prevents entrapment and pursuit
#Harness - prevents "phasing"?
#Chain Mail - immune to crits
Battle::ItemEffects::CriticalCalcFromTarget.add(:CHAINMAIL,
  proc { |item, user, target, c|
    next -1
  }
)
#Talisman - prevents Destiny Bond, Perish Song, Curse
#Siege Vest - halves damage from weakness (like Filter/Solid Rock), prevents switching and/or healing
#Substitube likened this to Solid Rock/Filter, but said it would reduce by half? (Those abilities only reduce by 1/4)
#If you want half, just change 0.75 to 0.5
Battle::ItemEffects::DamageCalcFromTarget.add(:SIEGEVEST,
  proc { |item, user, target, move, mults, baseDmg, type|
    if Effectiveness.super_effective?(target.damageState.typeMod)
      mults[:final_damage_multiplier] *= 0.75
    end
  }
)
#To prevent healing:
#Battle_Battler, this section:
  def canHeal?
    return false if fainted? || @hp >= @totalhp
    return false if @effects[PBEffects::HealBlock] > 0
    return true
  end
#add condition to check for Siege Vest, like so:
  def canHeal?
    return false if fainted? || @hp >= @totalhp
    return false if @effects[PBEffects::HealBlock] > 0
    return false if hasActiveItem?(:SIEGEVEST)
    return true
  end

#Tactical Vest - Min/max variance is always maxed
#in Move_UsageCalculations
    # Random variance
    if !self.is_a?(Battle::Move::Confusion)
      random = 85 + @battle.pbRandom(16)
      multipliers[:final_damage_multiplier] *= random / 100.0
    end
    # Random variance
    if !self.is_a?(Battle::Move::Confusion)
      random = 85 + @battle.pbRandom(16)
      random = 100 if user.hasActiveItem?(:TACTICALVEST) || target.hasActiveItem?(:TACTICALVEST)
      multipliers[:final_damage_multiplier] *= random / 100.0
    end

#Ammo Belt - extra hit on multistrike moves
#I think the best way would be to go to Battler_UseMove, and under these lines:
      # Get the number of hits
      numHits = move.pbNumHits(user, targets)
#add
      numHits += 1 if numHits>1 && user.hasActiveItem?(:AMMOBELT)
#Blast Powder - boosts explosion and selfdestruct damage (doubled)

Battle::ItemEffects::DamageCalcFromUser.add(:BLASTPOWDER,
  proc { |item, user, target, move, mults, baseDmg, type|
    next if !move.function == "UserFaintsExplosive"
    battle.pbDisplay(_INTL("The {1} strengthened the attack!", user.itemName))
    mults[:base_damage_multiplier] *= 2
  }
)

#Padded Helmet - item form of Rock Head
#In Move_BaseEffects, find this line:
    return if user.hasActiveAbility?(:ROCKHEAD)
#Change it to:
    return if user.hasActiveAbility?(:ROCKHEAD) || user.hasActiveItem?(:PADDEDHELMET)
#Metal Grin - boosts biting moves
Battle::ItemEffects::DamageCalcFromUser.add(:METALGRIN,
  proc { |item, user, target, move, mults, baseDmg, type|
    mults[:base_damage_multiplier] *= 1.5 if move.bitingMove?
  }
)
#Hidden Glyph - boosts Hidden Power (specific amt not mentioned)
Battle::ItemEffects::DamageCalcFromUser.add(:HIDDENGLYPH,
  proc { |item, user, target, move, mults, baseDmg, type|
    next if !move.id == :HIDDENPOWER
    battle.pbDisplay(_INTL("The {1} strengthened the attack!", user.itemName))
    mults[:base_damage_multiplier] *= 2
  }
)
#Burden Glyph - boosts HM moves except for Surf and Waterfall, doubles stat effects of Flash/Defog
#Still need double stat effects
Battle::ItemEffects::DamageCalcFromUser.add(:BURDENGLYPH,
  proc { |item, user, target, move, mults, baseDmg, type|
    #battle.pbDisplay(_INTL("The {1} strengthened the attack!", user.itemName))
    mults[:base_damage_multiplier] *= 2 if HiddenMoveHandlers.hasHandler(move.id)
  }
)
#Jingle Bells - Deer Pokemon (should be flag added to swords of justice, Deerling line, Stantler line, Xerneas, Calyrex, Ting-Lu) levitate in Hail and aren't affected by Hail damage
#Battle_Battler:
  def airborne?
    return false if hasActiveItem?(:IRONBALL)
    return false if @effects[PBEffects::Ingrain]
    return false if @effects[PBEffects::SmackDown]
    return false if @battle.field.effects[PBEffects::Gravity] > 0
    return true if pbHasType?(:FLYING)
    return true if hasActiveAbility?(:LEVITATE) && !@battle.moldBreaker
    return true if hasActiveItem?(:AIRBALLOON)
    return true if @effects[PBEffects::MagnetRise] > 0
    return true if @effects[PBEffects::Telekinesis] > 0
    return false
  end
#Add check for Jingle Bells and Deer flag
    return true if hasActiveItem?(:JINGLEBELLS) && @pokemon.species_data.has_flag?("Deer")
#Do the same for takesHailDamage?
  def takesHailDamage?
    return false if !takesIndirectDamage?
    return false if pbHasType?(:ICE)
    return false if inTwoTurnAttack?("TwoTurnAttackInvulnerableUnderground",
                                     "TwoTurnAttackInvulnerableUnderwater")
    return false if hasActiveAbility?([:OVERCOAT, :ICEBODY, :SNOWCLOAK])
    return false if hasActiveItem?(:SAFETYGOGGLES)
    return true
  end
    return false if hasActiveItem?(:JINGLEBELLS) && @pokemon.species_data.has_flag?("Deer")

Battle::ItemEffects::OnSwitchIn.add(:JINGLEBELLS,
  proc { |item, battler, battle|
    next unless battler.pokemon.species_data.has_flag?("Deer")
    battle.pbDisplay(_INTL("{1} floats in the air with its {2}!",
       battler.pbThis, battler.itemName))
  }
)


#Neverstone - Ignores abilities
#Handy Cap - increased rate of incoming crits
Battle::ItemEffects::CriticalCalcFromTarget.add(:HANDYCAP,
  proc { |item, user, target, c|
    next c + 1
  }
)
#Singolite - raises all non-HP stats equally until BST is 530. Can't be part of evo line, can't have BST over 500.