Rpg Maker Developers Group

<cast_only_once>
<cast_only_twice>

<cooldown 1>
<cooldown 4>

$game_party.clear_used_skills!

$game_party.clear_skill_cooldowns!

# * Super Skill Nerf VX * # 
#   Scripter : Kyonides
#   v1.2.2 - 2025-09-25

# Nerf! Nerf! Nerf your favorite super duper skills!
# Even up to the point where your heroes can only use them once per battle!
# Or Cool Them Down!

# - Note Tags - #
# Cast Only Once:  <cast_only_once>
# Cast Only Twice: <cast_only_twice>
# Cooldown: <cooldown 1> or <cooldown 4> (Any positive number is fine)

# * Optional Script Calls * #

# - Just in case you want to clear this skill use limit once per call:
# $game_party.clear_used_skills!

# - Just in case you want to clear the skill cooldowns:
# $game_party.clear_skill_cooldowns!

module RPG
  class Skill
    ONLY_ONCE_NOTETAG  = /<cast_only_once>/i
    ONLY_TWICE_NOTETAG = /<cast_only_twice>/i
    SKILL_CD_NOTETAG   = /<cooldown (\d+)>/i
    def cast_once?
      @note[ONLY_ONCE_NOTETAG] != nil
    end

    def cast_twice?
      @note[ONLY_TWICE_NOTETAG] != nil
    end

    def has_cooldown?
      @note[SKILL_CD_NOTETAG] != nil
    end

    def cooldown_turns
      @note[SKILL_CD_NOTETAG]
      $1.to_i
    end

    def cooldown
      @cooldown ||= cooldown_turns
    end
  end
end

class Game_Battler
  alias :kyon_ssn_gm_btlr_sk_fx :skill_effect
  def skill_effect(user, skill)
    user.refresh_skill_data(skill) if user.actor?
    kyon_ssn_gm_btlr_sk_fx(user, skill)
  end
end

class Game_Actor
  alias :kyon_ssn_gm_act_stp :setup
  alias :kyon_ssn_gm_act_sk_cn_use? :skill_can_use?
  def setup(actor_id)
    kyon_ssn_gm_act_stp(actor_id)
    @used_skills = {}
    @skill_cd = {}
    @used_skills.default = 0
    @skill_cd.default = 0
  end

  def skill_used?(skill_id)
    @used_skills[skill_id] > 0
  end

  def skill_cd?(skill_id)
    @skill_cd[skill_id] > 0
  end

  def skill_can_use?(skill)
    return false unless skill
    skill_id = skill.id
    return false if skill.has_cooldown? and skill_cd?(skill_id)
    return false if @used_skills[skill_id] != 0 and skill.cast_once?
    return false if @used_skills[skill_id] == 2 and skill.cast_twice?
    kyon_ssn_gm_act_sk_cn_use?(skill)
  end

  def refresh_skill_data(skill)
    @used_skills[skill.id] += 1
    @skill_cd[skill.id] = skill.cooldown
  end

  def decrease_skill_cooldowns!
    @skill_cd.keys.each {|k| @skill_cd[k] -= 1 }
    @skill_cd.delete_if {|k, v| v < 1 }
  end

  def clear_used_skills!
    @used_skills.clear
  end

  def clear_skill_cooldowns!
    @skill_cd.clear
  end
  attr_reader :used_skills, :skill_cd
end

class Game_Party
  def decrease_skill_cooldowns!
    members.each {|actor| actor.decrease_skill_cooldowns! }
  end
    
  def clear_used_skills!
    members.each {|actor| actor.clear_used_skills! }
  end

  def clear_skill_cooldowns!
    members.each {|actor| actor.clear_skill_cooldowns! }
  end
end

class Scene_Battle
  alias :kyon_ssn_scn_btl_st_mn :start_main
  alias :kyon_ssn_scn_btl_term :terminate
  def start_main
    $game_party.decrease_skill_cooldowns!
    kyon_ssn_scn_btl_st_mn
  end

  def terminate
    $game_party.clear_used_skills!
    $game_party.clear_skill_cooldowns!
    kyon_ssn_scn_btl_term
  end
end