src/game/java/net/minecraft/util/datafix/fixes/AbstractArrowPickupFix.java

package net.minecraft.util.datafix.fixes;

import com.mojang.datafixers.DSL;
import com.mojang.datafixers.DataFix;
import com.mojang.datafixers.TypeRewriteRule;
import com.mojang.datafixers.Typed;
import com.mojang.datafixers.schemas.Schema;
import com.mojang.datafixers.types.Type;
import com.mojang.serialization.Dynamic;
import java.util.function.Function;

public class AbstractArrowPickupFix extends DataFix {
    public AbstractArrowPickupFix(Schema p_145046_) {
        super(p_145046_, false);
    }

    @Override
    protected TypeRewriteRule makeRule() {
        Schema schema = this.getInputSchema();
        return this.fixTypeEverywhereTyped("AbstractArrowPickupFix", schema.getType(References.ENTITY), this::updateProjectiles);
    }

    private Typed<?> updateProjectiles(Typed<?> p_145048_) {
        p_145048_ = this.updateEntity(p_145048_, "minecraft:arrow", AbstractArrowPickupFix::updatePickup);
        p_145048_ = this.updateEntity(p_145048_, "minecraft:spectral_arrow", AbstractArrowPickupFix::updatePickup);
        return this.updateEntity(p_145048_, "minecraft:trident", AbstractArrowPickupFix::updatePickup);
    }

    private static Dynamic<?> updatePickup(Dynamic<?> p_145054_) {
        if (p_145054_.get("pickup").result().isPresent()) {
            return p_145054_;
        } else {
            boolean flag = p_145054_.get("player").asBoolean(true);
            return p_145054_.set("pickup", p_145054_.createByte((byte)(flag ? 1 : 0))).remove("player");
        }
    }

    private Typed<?> updateEntity(Typed<?> p_145050_, String p_145051_, Function<Dynamic<?>, Dynamic<?>> p_145052_) {
        Type<?> type = this.getInputSchema().getChoiceType(References.ENTITY, p_145051_);
        Type<?> type1 = this.getOutputSchema().getChoiceType(References.ENTITY, p_145051_);
        return p_145050_.updateTyped(DSL.namedChoice(p_145051_, type), type1, p_145057_ -> p_145057_.update(DSL.remainderFinder(), p_145052_));
    }
}