HackScore.java

package uk.jamierocks.sponge.hack.scoreboard;

import uk.jamierocks.sponge.hack.util.Wrapper;

import com.google.common.collect.Sets;
import org.spongepowered.api.scoreboard.Score;
import org.spongepowered.api.scoreboard.Team;
import org.spongepowered.api.text.Text;

public class HackScore extends Wrapper<Score> {

    private Team fakeTeam;

    public HackScore(Score handle) {
        super(handle);
        this.fakeTeam = Team.builder()
                .name(handle.getName() + "-team")
                .displayName(handle.getName().toBuilder().append(Text.of("Team")).build())
                .members(Sets.newHashSet(handle.getName()))
                .build();
    }

    public Team getFakeTeam() {
        return this.fakeTeam;
    }

    public void setDisplayName(Text text) {
        this.fakeTeam.setSuffix(text);
    }
}

HackScoreboard.java

package uk.jamierocks.sponge.hack.scoreboard;

import uk.jamierocks.sponge.hack.util.Wrapper;

import org.spongepowered.api.scoreboard.Scoreboard;
import org.spongepowered.api.scoreboard.critieria.Criteria;
import org.spongepowered.api.scoreboard.displayslot.DisplaySlot;
import org.spongepowered.api.scoreboard.displayslot.DisplaySlots;
import org.spongepowered.api.scoreboard.objective.Objective;
import org.spongepowered.api.text.Text;
import org.spongepowered.api.text.format.TextColors;

public class HackScoreboard extends Wrapper<Scoreboard> {

    private static final Objective OBJECTIVE = Objective.builder()
            .name("hack-obj")
            .displayName(Text.builder().append(Text.of("Hack")).color(TextColors.DARK_BLUE).build())
            .criterion(Criteria.DUMMY)
            .build();

    private int lastPosition = 15;

    public HackScoreboard() {
        super(Scoreboard.builder().build());
        this.addDivider(Text.of(TextColors.RESET));
        this.getHandle().addObjective(OBJECTIVE);
        this.getHandle().updateDisplaySlot(OBJECTIVE, DisplaySlots.SIDEBAR);
    }

    /**
     * Gets the objective from the given {@link DisplaySlot}.
     *
     * @param slot The display slot.
     * @return An objective is their is one for that slot, or {@code null} otherwise.
     */
    public Objective getObjective(DisplaySlot slot) {
        if (this.getHandle().getObjective(slot).isPresent()) {
            return this.getHandle().getObjective(slot).get();
        }
        return null;
    }

    public void addScore(HackScore hackScore) {
        hackScore.getHandle().setScore(this.getNextPosition());
        this.getHandle().registerTeam(hackScore.getFakeTeam());
    }

    public void addDivider(Text text) {
        OBJECTIVE.getOrCreateScore(text).setScore(this.getNextPosition());
    }

    public int getNextPosition() {
        return this.lastPosition--;
    }
}

Wrapper.java

package uk.jamierocks.sponge.hack.util;

public abstract class Wrapper<T> {

    private final T handle;

    public Wrapper(final T handle) {
        this.handle = handle;
    }

    public T getHandle() {
        return this.handle;
    }
}