net.minecraft.util.EntitySelectors#net.minecraft.entity.boss.dragon.phase.PhaseList源码实例Demo

@SubscribeEvent(priority = EventPriority.HIGHEST)
public void onTick(LivingEvent.LivingUpdateEvent event) {
	EntityLivingBase e = event.getEntityLiving();
	if(e.isPotionActive(ModPotions.TIME_SLOW) && timeScale(e) == 0) {
		boolean shouldFreeze = true;
		if(e.isDead || e.getHealth() <= 0) {
			shouldFreeze = false;
		}
		if(e instanceof EntityDragon && ((EntityDragon) e).getPhaseManager().getCurrentPhase().getType() == PhaseList.DYING) {
			shouldFreeze = false;
		}
		if(shouldFreeze) {
			handleImportantEntityTicks(e);
			event.setCanceled(true);
		}
	}
}
 

private void updateConnectedCrystals() {
    this.connectedCrystalsIds.clear();
    final double maxDistance = 64 * 64;
    List<EntityEnderCrystal> enderCrystals = Arrays.stream(BiomeEndDecorator.getSpikesForWorld(getWorld()))
        .flatMap(endSpike -> getWorld().getEntitiesWithinAABB(EntityEnderCrystal.class, endSpike.getTopBoundingBox()).stream())
        .filter(crystal -> crystal.getDistanceSq(getPos()) < maxDistance)
        .collect(Collectors.toList());

    for (EntityEnderCrystal entityEnderCrystal : enderCrystals) {
        BlockPos beamTarget = entityEnderCrystal.getBeamTarget();
        if (beamTarget == null) {
            //if beam target is null, set ourselves as beam target
            entityEnderCrystal.setBeamTarget(getPos());
            this.connectedCrystalsIds.add(entityEnderCrystal.getEntityId());
        } else if (beamTarget.equals(getPos())) {
            //if beam target is ourselves, just add it to list
            this.connectedCrystalsIds.add(entityEnderCrystal.getEntityId());
        }
    }

    for (EntityDragon entityDragon : getWorld().getEntities(EntityDragon.class, EntitySelectors.IS_ALIVE)) {
        if (entityDragon.healingEnderCrystal != null && connectedCrystalsIds.contains(entityDragon.healingEnderCrystal.getEntityId())) {
            //if dragon is healing from crystal we draw energy from, reset it's healing crystal
            entityDragon.healingEnderCrystal = null;
            //if dragon is holding pattern, than deal damage and set it's phase to attack ourselves
            if (entityDragon.getPhaseManager().getCurrentPhase().getType() == PhaseList.HOLDING_PATTERN) {
                entityDragon.attackEntityFrom(DamageSource.causeExplosionDamage((EntityLivingBase) null), 10.0f);
                entityDragon.getPhaseManager().setPhase(PhaseList.CHARGING_PLAYER);
                ((PhaseChargingPlayer) entityDragon.getPhaseManager().getCurrentPhase()).setTarget(new Vec3d(getPos()));
            }
        }
    }
}
 

private static void handleImportantEntityTicks(EntityLivingBase e) {
	if (e.hurtTime > 0) {
		e.hurtTime--;
	}
	if (e.hurtResistantTime > 0) {
		e.hurtResistantTime--;
	}

	e.prevLimbSwingAmount = e.limbSwingAmount;
	e.prevRenderYawOffset = e.renderYawOffset;
	e.prevRotationPitch = e.rotationPitch;
	e.prevRotationYaw = e.rotationYaw;
	e.prevRotationYawHead = e.rotationYawHead;
	e.prevSwingProgress = e.swingProgress;
	e.prevDistanceWalkedModified = e.distanceWalkedModified;
	e.prevCameraPitch = e.cameraPitch;

	if(e.isPotionActive(ModPotions.TIME_SLOW) && timeScale(e) == 0) {
		PotionEffect pe = e.getActivePotionEffect(ModPotions.TIME_SLOW);
		if (!pe.onUpdate(e)) {
			if (!e.world.isRemote) {
				e.removePotionEffect(ModPotions.TIME_SLOW);
			}
		}
	}

	if(e instanceof EntityDragon) {
		IPhase phase = ((EntityDragon) e).getPhaseManager().getCurrentPhase();
		if(phase.getType() != PhaseList.HOLDING_PATTERN && phase.getType() != PhaseList.DYING) {
			((EntityDragon) e).getPhaseManager().setPhase(PhaseList.HOLDING_PATTERN);
		}
	}
}
 

public static Phase getBukkitPhase(PhaseList phase) {
    return Phase.values()[phase.getId()];
}
 

public static PhaseList getMinecraftPhase(Phase phase) {
    return PhaseList.getById(phase.ordinal());
}