mirror of
https://github.com/infinitefusion/infinitefusion-e18.git
synced 2025-12-06 06:01:46 +00:00
270 lines
11 KiB
Ruby
270 lines
11 KiB
Ruby
class Battle::AI
|
|
#=============================================================================
|
|
# Decide whether the opponent should switch Pokémon
|
|
#=============================================================================
|
|
# Called by the AI's def pbDefaultChooseEnemyCommand, and by def pbChooseMove
|
|
# if the only moves known are bad ones (the latter forces a switch). Also
|
|
# aliased by the Battle Palace and Battle Arena.
|
|
def pbChooseToSwitchOut(force_switch = false)
|
|
return false if @user.wild?
|
|
return false if !@battle.pbCanSwitchOut?(@user.index)
|
|
# Don't switch if there is a single foe and it is resting after Hyper Beam
|
|
# or will Truant (i.e. free turn)
|
|
if @trainer.high_skill?
|
|
foe_can_act = false
|
|
each_foe_battler(@user.side) do |b|
|
|
next if !b.can_attack?
|
|
foe_can_act = true
|
|
break
|
|
end
|
|
return false if !foe_can_act
|
|
end
|
|
# Various calculations to decide whether to switch
|
|
if force_switch
|
|
PBDebug.log_ai("#{@user.name} is being forced to switch out")
|
|
else
|
|
should_switch = Battle::AI::Handlers.should_switch?(@user, self, @battle)
|
|
return false if !should_switch
|
|
end
|
|
# Want to switch; find the best replacement Pokémon
|
|
idxParty = choose_best_replacement_pokemon(@user.index, force_switch)
|
|
if idxParty < 0 # No good replacement Pokémon found
|
|
PBDebug.log(" => no good replacement Pokémon, will not switch after all")
|
|
return false
|
|
end
|
|
# Prefer using Baton Pass instead of switching
|
|
baton_pass = -1
|
|
@user.battler.eachMoveWithIndex do |m, i|
|
|
next if m.function != "SwitchOutUserPassOnEffects" # Baton Pass
|
|
next if !@battle.pbCanChooseMove?(@user.index, i, false)
|
|
baton_pass = i
|
|
break
|
|
end
|
|
if baton_pass >= 0 && @battle.pbRegisterMove(@user.index, baton_pass, false)
|
|
PBDebug.log(" => will use Baton Pass to switch out")
|
|
return true
|
|
elsif @battle.pbRegisterSwitch(@user.index, idxParty)
|
|
PBDebug.log(" => will switch with #{@battle.pbParty(@user.index)[idxParty].name}")
|
|
return true
|
|
end
|
|
return false
|
|
end
|
|
|
|
#=============================================================================
|
|
|
|
def choose_best_replacement_pokemon(idxBattler, mandatory = false)
|
|
# Get all possible replacement Pokémon
|
|
party = @battle.pbParty(idxBattler)
|
|
idxPartyStart, idxPartyEnd = @battle.pbTeamIndexRangeFromBattlerIndex(idxBattler)
|
|
reserves = []
|
|
party.each_with_index do |_pkmn, i|
|
|
next if !@battle.pbCanSwitchIn?(idxBattler, i)
|
|
if !mandatory
|
|
ally_will_switch_with_i = false
|
|
@battle.allSameSideBattlers(idxBattler).each do |b|
|
|
next if @battle.choices[b.index][0] != :SwitchOut || @battle.choices[b.index][1] != i
|
|
ally_will_switch_with_i = true
|
|
break
|
|
end
|
|
next if ally_will_switch_with_i
|
|
end
|
|
# Ignore ace if possible
|
|
if @trainer.has_skill_flag?("ReserveLastPokemon") && i == idxPartyEnd - 1
|
|
next if !mandatory || reserves.length > 0
|
|
end
|
|
reserves.push([i, 100])
|
|
break if @trainer.has_skill_flag?("UsePokemonInOrder") && reserves.length > 0
|
|
end
|
|
return -1 if reserves.length == 0
|
|
# Rate each possible replacement Pokémon
|
|
reserves.each_with_index do |reserve, i|
|
|
reserves[i][1] = rate_replacement_pokemon(idxBattler, party[reserve[0]], reserve[1])
|
|
end
|
|
reserves.sort! { |a, b| b[1] <=> a[1] } # Sort from highest to lowest rated
|
|
# Don't bother choosing to switch if all replacements are poorly rated
|
|
if !mandatory
|
|
# TODO: Should the current battler be rated as well, to provide a
|
|
# threshold instead of using a threshold of 100?
|
|
return -1 if reserves[0][1] < 100 # Best replacement rated at <100, don't switch
|
|
end
|
|
# Return the best rated replacement Pokémon
|
|
return reserves[0][0]
|
|
end
|
|
|
|
def rate_replacement_pokemon(idxBattler, pkmn, score)
|
|
battler_side = @battle.sides[idxBattler & 1]
|
|
pkmn_types = pkmn.types
|
|
entry_hazard_damage = 0
|
|
# Stealth Rock
|
|
if battler_side.effects[PBEffects::StealthRock] && !pkmn.hasAbility?(:MAGICGUARD) &&
|
|
GameData::Type.exists?(:ROCK) && !pkmn.hasItem?(:HEAVYDUTYBOOTS)
|
|
eff = Effectiveness.calculate(:ROCK, *pkmn_types)
|
|
if !Effectiveness.ineffective?(eff)
|
|
entry_hazard_damage += pkmn.totalhp * eff / 8
|
|
end
|
|
end
|
|
# Spikes
|
|
if battler_side.effects[PBEffects::Spikes] > 0 && !pkmn.hasAbility?(:MAGICGUARD) &&
|
|
!battler.airborne? && !pkmn.hasItem?(:HEAVYDUTYBOOTS)
|
|
if @battle.field.effects[PBEffects::Gravity] > 0 || pkmn.hasItem?(:IRONBALL) ||
|
|
!(pkmn.hasType?(:FLYING) || pkmn.hasItem?(:LEVITATE) || pkmn.hasItem?(:AIRBALLOON))
|
|
spikes_div = [8, 6, 4][battler_side.effects[PBEffects::Spikes] - 1]
|
|
entry_hazard_damage += pkmn.totalhp / spikes_div
|
|
end
|
|
end
|
|
if entry_hazard_damage >= pkmn.hp
|
|
score -= 50 # pkmn will just faint
|
|
elsif entry_hazard_damage > 0
|
|
score -= 50 * entry_hazard_damage / pkmn.hp
|
|
end
|
|
# TODO: Toxic Spikes.
|
|
# TODO: Sticky Web.
|
|
# Predict effectiveness of foe's last used move against pkmn
|
|
each_foe_battler(@user.side) do |b, i|
|
|
next if !b.battler.lastMoveUsed
|
|
move_data = GameData::Move.get(b.battler.lastMoveUsed)
|
|
next if move_data.status?
|
|
move_type = move_data.type
|
|
eff = Effectiveness.calculate(move_type, *pkmn_types)
|
|
score -= move_data.power * eff / 5
|
|
end
|
|
# Add power * effectiveness / 10 of all moves to score
|
|
pkmn.moves.each do |m|
|
|
next if m.power == 0 || (m.pp == 0 && m.total_pp > 0)
|
|
@battle.battlers[idxBattler].allOpposing.each do |b|
|
|
bTypes = b.pbTypes(true)
|
|
score += m.power * Effectiveness.calculate(m.type, *bTypes) / 10
|
|
end
|
|
end
|
|
# Prefer if user is about to faint from Perish Song
|
|
score += 10 if @user.effects[PBEffects::PerishSong] == 1
|
|
return score
|
|
end
|
|
end
|
|
|
|
#===============================================================================
|
|
# If Pokémon is within 5 levels of the foe, and foe's last move was
|
|
# super-effective and powerful.
|
|
# TODO: Review switch deciding.
|
|
#===============================================================================
|
|
Battle::AI::Handlers::ShouldSwitch.add(:high_damage_from_foe,
|
|
proc { |battler, ai, battle|
|
|
if battler.turnCount > 0 && battler.hp < battler.totalhp / 2 && ai.trainer.high_skill?
|
|
target_battler = battler.battler.pbDirectOpposing(true)
|
|
foe = ai.battlers[target_battler.index]
|
|
if !foe.fainted? && foe.battler.lastMoveUsed && (foe.level - battler.level).abs <= 5
|
|
move_data = GameData::Move.get(foe.battler.lastMoveUsed)
|
|
eff = battler.effectiveness_of_type_against_battler(move_data.type, foe)
|
|
if Effectiveness.super_effective?(eff) && move_data.power > 70
|
|
switch_chance = (move_data.power > 95) ? 40 : 20
|
|
if ai.pbAIRandom(100) < switch_chance
|
|
PBDebug.log_ai("#{battler.name} wants to switch because a foe can do a lot of damage to it")
|
|
next true
|
|
end
|
|
end
|
|
end
|
|
end
|
|
next false
|
|
}
|
|
)
|
|
|
|
#===============================================================================
|
|
# Pokémon can't do anything (must have been in battle for at least 5 rounds).
|
|
# TODO: Review switch deciding.
|
|
#===============================================================================
|
|
Battle::AI::Handlers::ShouldSwitch.add(:battler_is_useless,
|
|
proc { |battler, ai, battle|
|
|
if !battle.pbCanChooseAnyMove?(battler.index) && battler.turnCount >= 5
|
|
PBDebug.log_ai("#{battler.name} wants to switch because it can't do anything")
|
|
next true
|
|
end
|
|
next false
|
|
}
|
|
)
|
|
|
|
#===============================================================================
|
|
# Pokémon is Perish Songed and has Baton Pass.
|
|
# TODO: Review switch deciding.
|
|
#===============================================================================
|
|
Battle::AI::Handlers::ShouldSwitch.add(:perish_song,
|
|
proc { |battler, ai, battle|
|
|
if battler.effects[PBEffects::PerishSong] == 1
|
|
PBDebug.log_ai("#{battler.name} wants to switch because it is about to faint from Perish Song")
|
|
next true
|
|
end
|
|
next false
|
|
}
|
|
)
|
|
|
|
#===============================================================================
|
|
# Pokémon will faint because of bad poisoning at the end of this round, but
|
|
# would survive at least one more round if it were regular poisoning instead.
|
|
# TODO: Review switch deciding.
|
|
#===============================================================================
|
|
Battle::AI::Handlers::ShouldSwitch.add(:reduce_toxic_to_regular_poisoning,
|
|
proc { |battler, ai, battle|
|
|
if battler.status == :POISON && battler.statusCount > 0 && ai.trainer.high_skill?
|
|
next false if battler.has_active_ability?(:POISONHEAL)
|
|
next false if !battler.battler.takesIndirectDamage?
|
|
poison_damage = battler.totalhp / 8
|
|
next_toxic_damage = battler.totalhp * (battler.effects[PBEffects::Toxic] + 1) / 16
|
|
if battler.hp <= next_toxic_damage && battler.hp > poison_damage
|
|
if ai.pbAIRandom(100) < 80
|
|
PBDebug.log_ai("#{battler.name} wants to switch to reduce toxic to regular poisoning")
|
|
next true
|
|
end
|
|
end
|
|
end
|
|
next false
|
|
}
|
|
)
|
|
|
|
#===============================================================================
|
|
# Pokémon is Encored into an unfavourable move.
|
|
# TODO: Review switch deciding.
|
|
#===============================================================================
|
|
Battle::AI::Handlers::ShouldSwitch.add(:bad_encored_move,
|
|
proc { |battler, ai, battle|
|
|
if battler.effects[PBEffects::Encore] > 0 && ai.trainer.medium_skill?
|
|
idxEncoredMove = battler.battler.pbEncoredMoveIndex
|
|
if idxEncoredMove >= 0
|
|
ai.set_up_move_check(battler.moves[idxEncoredMove])
|
|
scoreSum = 0
|
|
scoreCount = 0
|
|
battler.battler.allOpposing.each do |b|
|
|
scoreSum += ai.pbGetMoveScore([b])
|
|
scoreCount += 1
|
|
end
|
|
if scoreCount > 0 && scoreSum / scoreCount <= 20
|
|
if ai.pbAIRandom(100) < 80
|
|
PBDebug.log_ai("#{battler.name} wants to switch because of encoring a bad move")
|
|
next true
|
|
else
|
|
next false
|
|
end
|
|
end
|
|
end
|
|
end
|
|
next false
|
|
}
|
|
)
|
|
|
|
#===============================================================================
|
|
# Sudden Death rule - I'm not sure what this means.
|
|
# TODO: Review switch deciding.
|
|
#===============================================================================
|
|
Battle::AI::Handlers::ShouldSwitch.add(:sudden_death,
|
|
proc { |battler, ai, battle|
|
|
if battle.rules["suddendeath"] && battler.turnCount > 0
|
|
if battler.hp <= battler.totalhp / 4 && ai.pbAIRandom(100) < 30
|
|
PBDebug.log_ai("#{battler.name} wants to switch because of the sudden death rule")
|
|
next true
|
|
elsif battler.hp <= battler.totalhp / 2 && ai.pbAIRandom(100) < 80
|
|
PBDebug.log_ai("#{battler.name} wants to switch because of the sudden death rule")
|
|
next true
|
|
end
|
|
end
|
|
next false
|
|
}
|
|
)
|