Helpers for abilities

IBladedHandsAbility

Since 2.11.0. An ability that, while active, makes the user's bare hands count as a sword for the techniques that need one (AbilityUseConditions.requiresSword, and requiresMeleeWeapon through it): sickle nails, scissor hands, blade arms.

public class MyClawsAbility extends PunchAbility implements IBladedHandsAbility {

    @Override
    public boolean hasBladedHands(LivingEntity entity) {
        return this.continuousComponent.isContinuous();   // the claws are out
    }
}

• The base mod does this for one ability only, Spar Claw, written into requiresSword by name; AkumaLib opens the same door to any equipped ability implementing the interface.
• As for Spar Claw, it holds only with an empty main hand. The hand stays empty, so everything a bare hand gets (PUNCH_DAMAGE above all) is kept.
• IBladedHandsAbility.isActive(entity) tells whether any equipped ability makes the entity's hands blades right now.

AbilityProgress

Since 3.1.0. How far along an equipped continuous ability is, for a pose or a model that follows it. Either side.

float t = AbilityProgress.fraction(entity, HornTossAbility.INSTANCE.get(), HornTossAbility.HOLD, partialTick);
float lift = AbilityProgress.riseFall(t, 0.4F);   // up over the first 40%, back down over the rest

continueTime gives the ticks (plus the partial tick), fraction the 0-1 share of a total, both -1 when the ability is not running; riseFall turns that into a 0-1-0 curve.

SharedCooldowns

Since 3.1.0. Two abilities that share one cooldown, whoever registered them - an addon technique and a base mod one included, which an AbilityPool cannot bind:

SharedCooldowns.link(JusshiganAbility.INSTANCE, ShiganAbility.INSTANCE);   // at mod construction

Every tick, for a player with both equipped, when one is cooling down and the other is idle, the other starts a cooldown for what the first has left. A held stance counts as busy: its own cooldown comes when it ends.

GatedUnlocks

Since 3.1.0. The base mod asks a fruit's gated abilities (setUnlockCheck) only at a few moments, so a technique unlocked by learning something else waits for the next one. This asks again every 100 ticks for the players you name:

GatedUnlocks.recheck(player -> MyHelper.hasFruit(player), MyTechniqueAbility.INSTANCE);

FruitInjectionHelper

Adds abilities to, or removes them from, a Devil Fruit's list of ability cores, including a fruit the base mod owns:

FruitInjectionHelper.appendAbilities(fruit, MyExtraAbility.INSTANCE.get());
FruitInjectionHelper.removeAbilities(fruit, SomeAbility.INSTANCE.get());

• appendAbilities skips a core already on the fruit and ignores null entries.
• Both change the fruit item's own list in place and print what they changed to the console.

Call it once the fruit exists, and test it in game

The fruit is an item instance, so it has to be registered before you can pass it, and the abilities you add have to be registered too. Neither addon built on AkumaLib uses this helper today, so check in game how players who already ate the fruit are affected before relying on it.

Small helpers moved from Missing Missing no Mi (4.4.0)

Class	What it is for
TechniqueSource	a damage source of an ability that leaves out the fist, cut and blunt types, so the base mod adds neither the punch nor the held weapon to it
Techniques	isRunning(entity, core) and endDash
Smash	breaking through blocks by the base mod's own pipeline
Holds	carrying a held body beside its holder, never into blocks
SparedFalls	spare(entity, ticks): the next fall within that time does not hurt
PanelWalls	raising a wall of panel entities in front of a body (the ability around it: WallAbility); a body of another size raises a man's wall grown by its size around its feet, 48 blocks wide at most
GroundLayers	laying a temporary layer on the ground of each column of an area
CooldownFamily	abilities that share one cooldown and cannot run together