How have Capabilities in 1.17 changed?

[Twingemios]

I'm trying to make some capabilities in 1.17 after moving from 1.16 and I can't figure out how I am supposed to do them now.

This is how I did them in 1.16.

public class Cooldowns implements ICooldowns {
    private int summonCooldown = 0;

    @Override
    public void setSummonCooldown(int var) {
        this.summonCooldown = var;
    }

    @Override
    public int getSummonCooldown() {
        return this.summonCooldown;
    }
}

public class CooldownCapability implements ICapabilitySerializable<CompoundNBT> {

    @CapabilityInject(ICooldowns.class)
    public static final Capability<ICooldowns> CAPABILITY = null;
    private LazyOptional<ICooldowns> instance = LazyOptional.of(CAPABILITY::getDefaultInstance);

    @Override
    public <T> LazyOptional<T> getCapability(Capability<T> cap, Direction side) {
        return cap == CAPABILITY ? instance.cast() : LazyOptional.empty();
    }

    @Override
    public CompoundNBT serializeNBT() {
        return (CompoundNBT) CAPABILITY.getStorage().writeNBT(CAPABILITY, instance.orElseThrow(() -> new IllegalArgumentException("LazyOptional must not be empty!")), null);
    }

    @Override
    public void deserializeNBT(CompoundNBT nbt) {
        CAPABILITY.getStorage().readNBT(CAPABILITY, instance.orElseThrow(() -> new IllegalArgumentException("LazyOptional must not be empty!")), null, nbt);
    }
}

public class CooldownStorage implements IStorage<ICooldowns> {

    @Override
    public CompoundNBT writeNBT(Capability<ICooldowns> capability, ICooldowns instance, Direction side) {
        CompoundNBT cnbt = new CompoundNBT();
        cnbt.putInt("summoncooldown",instance.getSummonCooldown());
        return cnbt;
    }

    @Override
    public void readNBT(Capability<ICooldowns> capability, ICooldowns instance, Direction side, INBT nbt) {
        CompoundNBT inbt = (CompoundNBT) nbt;
        instance.setSummonCooldown(inbt.getInt("summoncooldown"));
    }
}

 

From I understand IStorage and getDefaultInstance are depreciated. What do I need to change in order to run this code on 1.17? I've tired to do a lot of research on this but it seems forge's read the docs for 1.17 is outdated as it still tells me to use IStorage.

[Luis_ST]

the Factory and Storage of the Capability has been removed
also you need to use RegisterCapabilitiesEvent to register your Capabilities

[Twingemios]

I am aware that I need to register the capabilities, I just haven't provided that code as far as I am pretty sure nothing has changed in that department.

What do I do in place of the Factory and Storage for the capability?

[Luis_ST]

nothing you need to remove them,
move the code from CooldownStorage#writeNBT & CooldownStorage#readNBT
into the CooldownCapability#serializeNBT & CooldownCapability#deserializeNBT

[Twingemios]

18 minutes ago, Luis_ST said:

nothing you need to remove them,
move the code from CooldownStorage#writeNBT & CooldownStorage#readNBT
into the CooldownCapability#serializeNBT & CooldownCapability#deserializeNBT

Then what do I do with this? It needs the instance

    @Override
    public <T> LazyOptional<T> getCapability(Capability<T> cap, Direction side) {
        return cap == CAPABILITY ? instance.cast() : LazyOptional.empty();
    }

 

[Twingemios]

6 minutes ago, diesieben07 said:

You just create a new instance of your capability.

How can I do that? It requires that a LazyOptional must be returned in getCapability
 

public class ChaosActsProvider implements ICapabilitySerializable<CompoundTag> {
    @CapabilityInject(IChaosActs.class)
    public static final Capability<IChaosActs> CAPABILITY = null;
    public static final ChaosActs instance = new ChaosActs();

    @Nonnull
    @Override
    public <T> LazyOptional<T> getCapability(@Nonnull Capability<T> cap, @Nullable Direction side) {
        return cap == CAPABILITY ? instance : LazyOptional.empty();
    }

    @Override
    public CompoundTag serializeNBT() {
        CompoundTag cnbt = new CompoundTag();

        cnbt.putInt("timer",instance.getTimer());

        return cnbt;
    }

    @Override
    public void deserializeNBT(CompoundTag nbt) {
        instance.setTimer(nbt.getInt("timer"));

    }
}