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Overview

The BardsEffects class is responsible for registering and configuring all status effects used by Bards RPG spells. Each effect is defined with attribute modifiers that enhance or protect the affected entity.

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Effect entries

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Ballad

ID: bards_rpg:ballad Display name: Ballad Description: Increases Attack Damage & Spell Power. Category: BENEFICIAL Color: 0x9999ff (light blue) Attribute modifiers:
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spell_power.generic
float
+2.5% spell power per amplifier levelOperation: ADD_MULTIPLIED_BASE
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generic.attack_damage
float
+2.5% attack damage per amplifier levelOperation: ADD_MULTIPLIED_BASE
Usage: Applied by the Magical Ballad spell to boost offensive capabilities for 8 seconds, stackable up to 3 times. 
public static Effects.Entry BALLAD = add(new Effects.Entry(
    Identifier.of(MOD_ID, "ballad"),
    "Ballad",
    "Increases Attack Damage & Spell Power.",
    new CustomStatusEffect(StatusEffectCategory.BENEFICIAL, 0x9999ff),
    new EffectConfig(
        List.of(
            new AttributeModifier(
                SpellSchools.GENERIC.id.toString(),
                0.025F,
                EntityAttributeModifier.Operation.ADD_MULTIPLIED_BASE
            ),
            new AttributeModifier(
                EntityAttributes.GENERIC_ATTACK_DAMAGE.getIdAsString(),
                0.025F,
                EntityAttributeModifier.Operation.ADD_MULTIPLIED_BASE
            )
        )
    )
));

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Troubadours Minuet

ID: bards_rpg:troubadours_minuet Display name: Troubadours Minuet Description: Reduces damage taken. Category: BENEFICIAL Color: 0x9999ff (light blue) Attribute modifiers:
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spell_engine.damage_taken
float
-5% damage taken per amplifier levelOperation: ADD_MULTIPLIED_BASE
Usage: Applied by the Troubadour’s Minuet spell to provide damage reduction for 10 seconds, stackable up to 3 times (max -15% damage taken). 
public static Effects.Entry TROUBADOURS_MINUET = add(new Effects.Entry(
    Identifier.of(MOD_ID, "troubadours_minuet"),
    "Troubadours Minuet",
    "Reduces damage taken.",
    new CustomStatusEffect(StatusEffectCategory.BENEFICIAL, 0x9999ff),
    new EffectConfig(
        List.of(
            new AttributeModifier(
                SpellEngineAttributes.DAMAGE_TAKEN.id.toString(),
                -0.05F,
                EntityAttributeModifier.Operation.ADD_MULTIPLIED_BASE
            )
        )
    )
));

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Army’s Paeon (Stash)

ID: bards_rpg:armys_paeon Display name: Army’s Paeon Description: The player buffs nearby allies if he damages enemies with melee hits, arrows or spells. Category: BENEFICIAL Color: 0x9999ff (light blue) Attribute modifiers: None (stash effect for triggering mechanics) Usage: Applied by the Army’s Paeon spell as a stash effect that triggers when the player deals damage via melee, arrows, or spells. 
public static Effects.Entry ARMYS_PAEON_STASH = add(new Effects.Entry(
    Identifier.of(MOD_ID, "armys_paeon"),
    "Army's Paeon",
    "The player buffs nearby allies if he damages enemies with melee hits, arrows or spells.",
    new CustomStatusEffect(StatusEffectCategory.BENEFICIAL, 0x9999ff),
    new EffectConfig(
        List.of()
    )
));

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Army’s Motivation

ID: bards_rpg:armys_motivation Display name: Army’s Motivation Description: With each melee-, arrow- & spell-hit you deal magic damage, according to the highest attribute, scaling with the effect amplifier. Category: BENEFICIAL Color: 0x9999ff (light blue) Attribute modifiers: None (damage is handled by custom logic) Usage: Applied to allies near the caster when Army’s Paeon triggers activate, lasting 8 seconds and stackable up to 3 times. 
public static Effects.Entry ARMYS_PAEON = add(new Effects.Entry(
    Identifier.of(MOD_ID, "armys_motivation"),
    "Army's Motivation",
    "With each melee-, arrow- & spell-hit you deal magic damage, according to the highest attribute, scaling with the effect amplifier.",
    new CustomStatusEffect(StatusEffectCategory.BENEFICIAL, 0x9999ff),
    new EffectConfig(
        List.of()
    )
));

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Registration

Effects are registered through the register method which configures synchronization and registers all entries: 
public static void register(ConfigFile.Effects config) {
    for (var entry : entries) {
        Synchronized.configure(entry.effect, true);
    }
    Effects.register(entries, config.effects);
}
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config
ConfigFile.Effects
required
Configuration file containing effect settings

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Entry structure

All effects use the Effects.Entry class from the Spell Engine API:
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id
Identifier
Unique identifier for the effect
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name
String
Display name shown in the game UI
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description
String
Description of what the effect does
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effect
CustomStatusEffect
The status effect instance with category and color
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config
EffectConfig
Configuration containing attribute modifiers

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Attribute modifier operations

All attribute modifiers in Bards RPG use the ADD_MULTIPLIED_BASE operation:
  • ADD_MULTIPLIED_BASE: Adds a percentage of the base value
    • Example: Base damage 10, modifier 0.025 (2.5%), amplifier 2
    • Calculation: 10 * (1 + 0.025 * 3) = 10.75

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Usage example

import com.bards.effect.BardsEffects;
import net.minecraft.entity.LivingEntity;
import net.minecraft.entity.effect.StatusEffectInstance;

// Apply Ballad effect to an entity
LivingEntity target = ...;
StatusEffectInstance ballad = new StatusEffectInstance(
    BardsEffects.BALLAD.effect,
    160, // 8 seconds (20 ticks/sec)
    0,   // amplifier (level 1)
    false,
    true
);
target.addStatusEffect(ballad);

// Access effect configuration
var balladConfig = BardsEffects.BALLAD.config();
var firstModifier = balladConfig.firstModifier();
float bonusValue = firstModifier.value; // 0.025