@Override
public boolean onUpdate(int currentTick) {

    if (closed) {
        return false;
    }

    this.timing.startTiming();

    int tickDiff = currentTick - lastUpdate;
    if (tickDiff <= 0 && !justCreated) {
        return true;
    }

    lastUpdate = currentTick;

    boolean hasUpdate = entityBaseTick(tickDiff);

    if (isAlive()) {
        motionY -= getGravity();

        move(motionX, motionY, motionZ);

        float friction = 1 - getDrag();

        motionX *= friction;
        motionY *= 1 - getDrag();
        motionZ *= friction;

        Vector3 pos = (new Vector3(x - 0.5, y, z - 0.5)).round();

        if (onGround) {
            close();
            Block block = level.getBlock(pos);
            if (block.getId() > 0 && block.isTransparent() && !block.canBeReplaced()) {
                if (this.level.getGameRules().getBoolean(GameRule.DO_ENTITY_DROPS)) {
                    getLevel().dropItem(this, Item.get(this.getBlock(), this.getDamage(), 1));
                }
            } else {
                EntityBlockChangeEvent event = new EntityBlockChangeEvent(this, block, Block.get(getBlock(), getDamage()));
                server.getPluginManager().callEvent(event);
                if (!event.isCancelled()) {
                    getLevel().setBlock(pos, event.getTo(), true);

                    if (event.getTo().getId() == Item.ANVIL) {
                        getLevel().addSound(pos, Sound.RANDOM_ANVIL_LAND);
                    }
                }
            }
            hasUpdate = true;
        }

        updateMovement();
    }

    this.timing.stopTiming();

    return hasUpdate || !onGround || Math.abs(motionX) > 0.00001 || Math.abs(motionY) > 0.00001 || Math.abs(motionZ) > 0.00001;
}
 

@Override
public boolean onUpdate(int currentTick) {

    if (closed) {
        return false;
    }

    this.timing.startTiming();

    int tickDiff = currentTick - lastUpdate;
    if (tickDiff <= 0 && !justCreated) {
        return true;
    }

    lastUpdate = currentTick;

    boolean hasUpdate = entityBaseTick(tickDiff);

    if (isAlive()) {
        motionY -= getGravity();

        move(motionX, motionY, motionZ);

        float friction = 1 - getDrag();

        motionX *= friction;
        motionY *= 1 - getDrag();
        motionZ *= friction;

        Vector3 pos = (new Vector3(x - 0.5, y, z - 0.5)).round();

        if (onGround) {
            kill();
            Block block = level.getBlock(pos);
            if (block.getId() > 0 && block.isTransparent() && !block.canBeReplaced()) {
                if (this.level.getGameRules().getBoolean(GameRule.DO_ENTITY_DROPS)) {
                    getLevel().dropItem(this, Item.get(this.getBlock(), this.getDamage(), 1));
                }
            } else {
                EntityBlockChangeEvent event = new EntityBlockChangeEvent(this, block, Block.get(getBlock(), getDamage()));
                server.getPluginManager().callEvent(event);
                if (!event.isCancelled()) {
                    getLevel().setBlock(pos, event.getTo(), true);

                    if (event.getTo().getId() == Item.ANVIL) {
                        getLevel().addSound(pos, Sound.RANDOM_ANVIL_LAND);
                    }
                }
            }
            hasUpdate = true;
        }

        updateMovement();
    }

    this.timing.stopTiming();

    return hasUpdate || !onGround || Math.abs(motionX) > 0.00001 || Math.abs(motionY) > 0.00001 || Math.abs(motionZ) > 0.00001;
}