Evasion Mechanic

Evasion is a core combat mechanic in Remixed Dungeon that represents the ability to dodge incoming attacks, primarily determined by the character's defense skill.

The evasion calculation is part of the defense skill system in the Char.java file:

public int defenseSkill(Char enemy) {
    // ... base calculation ...
 
    final int[] bf = {0};
    forEachBuff(b -> bf[0] += b.defenceSkillBonus(this));
 
    int bonus = bf[0];
 
    float evasion = (float) Math.pow(1.2, bonus);
    if (paralysed) {
        evasion /= 2;
    }
 
    // ... armor encumbrance calculation ...
    int aEnc = getItemFromSlot(Belongings.Slot.ARMOR).requiredSTR() - effectiveSTR();
 
    if (aEnc > 0) {
        return (int) (defenseSkill * evasion / Math.pow(1.5, aEnc));
    } else {
 
        if (getHeroClass() == HeroClass.ROGUE) {
 
            if (getCurAction() != null && getSubClass() == HeroSubClass.FREERUNNER && !isStarving()) {
                evasion *= 2;
            }
 
            return (int) ((defenseSkill - aEnc) * evasion);
        } else {
            return (int) (defenseSkill * evasion);
        }
    }
}

• Calculation: Math.pow(1.2, bonus) where bonus is the sum of all defenceSkillBonus from buffs
• Effect: Each point of defense bonus multiplies evasion by 1.2
• Exponential Growth: The evasion bonus increases exponentially with more defense bonuses

• Penalty: When paralyzed, evasion is halved (evasion /= 2)
• Impact: Reduces the character's ability to dodge attacks significantly
• Implementation: if (paralysed) { evasion /= 2; }

• Calculation: getItemFromSlot(Belongings.Slot.ARMOR).requiredSTR() - effectiveSTR()
• Effect: If armor requires more strength than available (aEnc > 0), evasion is reduced by Math.pow(1.5, aEnc)
• Impact: Heavy armor that requires more strength than available reduces evasion significantly

• Rogues: Have the potential for additional evasion bonuses
• Freerunner Subclass: When not starving and moving, evasion is doubled (evasion *= 2)
• Non-Rogues: Use standard evasion calculation

• Hit Calculation: Random.Float(attacker.attackSkill(defender)) > Random.Float(defender.defenseSkill(attacker))
• Success: When the defender's defense skill roll is higher, the attack is evaded
• Result: The attack misses entirely, dealing no damage

• Defense Skill Bonuses: From buffs and equipment
• Paralysis Status: Reduces evasion by 50%
• Armor Encumbrance: Heavy armor reduces evasion when STR is insufficient
• Hero Class: Rogues have special evasion mechanics
• Hero Subclass: Freerunner gets double evasion under specific conditions

• Ring of Evasion - Provides direct evasion bonuses
• Armor items - May have encumbrance that affects evasion
• Hero subclasses - Some provide evasion bonuses

• Any buff that implements defenceSkillBonus will affect evasion
• Ring of Evasion provides such a buff

• Java: Char.java
• Java: Hero.java

• Defense Mechanic
• Attack Skill Mechanic
• Combat Mechanic
• Accuracy Mechanic
• Ring of Evasion