efibs / mc-lasertag-mod

public class ActivationState implements IActivationState {

    /**

     * HashSet containing the uuids of all and only the

     * activated players.

     */

    private final HashSet<UUID> activatedPlayersUuids = new HashSet<>();

    @Override

    public synchronized boolean isActivated(UUID playerUuid) {

        return activatedPlayersUuids.contains(playerUuid);

    }

    @Override

    public synchronized void activatePlayer(UUID playerUuid) {

        activatedPlayersUuids.add(playerUuid);

    }

    @Override

    public synchronized void deactivatePlayer(UUID playerUuid) {

        activatedPlayersUuids.remove(playerUuid);