Attack Skill Mechanic

Attack Skill is a core combat mechanic in Remixed Dungeon that determines the chance of successfully hitting an enemy with attacks.

The attack skill is calculated in the Char.java file as part of the attackSkill method:

public int attackSkill(Char target) {
 
    int[] bf = {0};
    forEachBuff(b -> bf[0] += b.attackSkillBonus(this));
 
    int bonus = bf[0];
 
    float accuracy = (float) Math.pow(1.4, bonus);
 
    if (target == null) { // Mainly to mask bug in Remixed RPG
        target = CharsList.DUMMY;
    }
 
    if (rangedWeapon.valid() && level().distance(getPos(), target.getPos()) == 1) {
        accuracy *= 0.5f;
    }
 
    float mainAccuracyFactor = getActiveWeapon().accuracyFactor(this);
    float secondaryAccuracyFactor = getSecondaryWeapon().accuracyFactor(this);
 
    float skillFactor = Utils.min(20f, mainAccuracyFactor, secondaryAccuracyFactor);
 
    int aSkill = (int) ((baseAttackSkill + lvl()) * accuracy * skillFactor);
 
    GLog.debug("%s attacking %s with factor %2.2f, resulting skill %d", getEntityKind(), target.getEntityKind(), skillFactor, aSkill);
 
    return aSkill;
}

• Definition: The character's base attack skill value
• Storage: baseAttackSkill field in Char class
• Examples:
  • Rat: 8
  • Warrior: 10 (in Hero class)
  • Thief: 12
  • Goo: 11
  • King: 32
  • Yog's Heart: 26
• Function: Provides the foundational attack value before modifiers

• Formula: baseAttackSkill + lvl()
• Effect: Each level increases attack skill by 1 point
• Implementation: baseAttackSkill + lvl() in the calculation

• Mechanism: Each buff with attackSkillBonus increases the skill
• Formula: Bonuses are summed and applied as exponential modifier to accuracy: Math.pow(1.4, bonus)
• Examples:
  • Ring of Accuracy increases attack skill bonus equal to its level
  • Blessed buff provides attack skill bonus
  • Hero subclasses may provide attack skill bonuses

• Weapon Accuracy: getActiveWeapon().accuracyFactor(this) and getSecondaryWeapon().accuracyFactor(this)
• Calculation: The minimum of both weapon accuracy factors is used, capped at 20.0
• Examples:
  • Ring of Accuracy: Provides accuracy bonus
  • Weightstone: Can imbue weapons with accuracy
  • Compound Bow: Has improved accuracy over wooden bow

• Condition: When using a ranged weapon at melee distance (distance = 1)
• Effect: Accuracy is halved (0.5f multiplier)
• Purpose: Discourages using ranged weapons at close range

• Usage: Attack skill is compared to the target's defense skill to determine hit probability
• Implementation: In CharUtils.java, Random.Float(attacker.attackSkill(defender)) > Random.Float(defender.defenseSkill(attacker))

The Hero class has a special attack skill calculation that can be enhanced by subclass:

// In Hero.java
public int attackSkill(Char target) {
    float attackSkillFactor = 1;
 
    if (getSubClass() == HeroSubClass.GLADIATOR) {
        attackSkillFactor *= 1.2;
    }
 
    return (int) (super.attackSkill(target) * attackSkillFactor);
}

• Hit Chance: The attacker's attack skill is compared against the defender's defense skill
• Calculation: Random.Float(attacker.attackSkill(defender)) > Random.Float(defender.defenseSkill(attacker))
• Result: If true, the attack hits; if false, the attack misses

• Java: Char.java
• Java: Hero.java
• Java: CharUtils.java
• Java: Blessed.java

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