• ManaRegeneration.java - Main buff implementation
• Buff.java - Base buff class
• Char.java - Character class with manaRegenerationBonus method
• BuffFactory.java - Buff registration and factory

This entity is implemented in Java, no specific JSON configuration exists

<!-- English (values/strings_all.xml) -->
<string name="ManaRegenerationBuff_Name">Mana Regeneration</string>
<string name="ManaRegenerationBuff_Info">The function for mana regeneration is in a buff form to make things easier.</string>
<string name="Mana_Title">Mana</string>
<string name="Mana_Cost">Mana Cost: </string>
<string name="Spells_NotEnoughSP">You do not have enough mana to cast a "%1$s" spell.</string>
<string name="ClassArmor_LowMana">Insufficient mana!</string>
<string name="HeroClass_NecromancerPerks_1">Necromancers use mana to cast Death spells.</string>
<string name="HeroClass_MagPerks_4">Mages use mana to cast Elemental spells.</string>
 
<!-- Russian (values-ru/strings_all.xml) -->
<string name="ManaRegenerationBuff_Name">Регенерация маны</string>
<string name="ManaRegenerationBuff_Info">Функция регенерации маны оформлена в виде баффа для удобства.</string>

This entity is implemented in Java, no Lua script exists

• Class: `com.watabou.pixeldungeon.actors.buffs.ManaRegeneration`
• Extends: `Buff`
• Regeneration Delay: 20 turns base (REGENERATION_DELAY constant)
• Bonus Calculation: spend time = REGENERATION_DELAY / 1.2^bonus
• Fast Mana Regeneration: Adds +10 bonus when facilitation is enabled
• Skill Points: Accumulates 1 skill point per tick in unsafe areas
• Buff Attachment: Only attaches if target already has this buff or via super.attachTo()

public class ManaRegeneration extends Buff {
    private static final float REGENERATION_DELAY = 20;
 
    @Override
    public boolean act() {
        if (target.isAlive()) {
            if (!target.level().isSafe()) {
                target.accumulateSkillPoints(1);
            }
 
            final int[] bonus = {0};
 
            if(Dungeon.isFacilitated(Facilitations.FAST_MANA_REGENERATION)) {
                bonus[0] += 10;
            }
 
            target.forEachBuff(b-> bonus[0] +=b.manaRegenerationBonus(target));
 
            spend((float) (REGENERATION_DELAY / Math.pow(1.2, bonus[0])));
        } else {
            deactivate();
        }
        return true;
    }
}

• This buff handles the regeneration of mana for characters
• It runs every 20 turns divided by 1.2^bonus (where bonus comes from other buffs with manaRegenerationBonus)
• If Fast Mana Regeneration facilitation is enabled, it adds a +10 bonus
• When in unsafe areas, it accumulates skill points for the character
• The regeneration rate is affected by other buffs that provide manaRegenerationBonus
• Hero classes and subclasses can provide manaRegenerationBonus through their implementations