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Handle nulls in EntityRewriter (#11)

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Matsv 2017-06-21 19:30:48 +02:00
parent 0e5ee7063f
commit a5aa9e7281
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GPG Key ID: 97CEC2A2EA31350F
3 changed files with 17 additions and 7 deletions
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7
core/src/main/java/nl/matsv/viabackwards/api/entities/storage/EntityTracker.java
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@ -19,6 +19,7 @@ import us.myles.ViaVersion.api.data.StoredObject;
import us.myles.ViaVersion.api.data.UserConnection;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.ConcurrentHashMap;
public class EntityTracker extends StoredObject {
@ -51,12 +52,12 @@ public class EntityTracker extends StoredObject {
public AbstractEntityType getEntityType(int id) {
if (containsEntity(id))
return getEntity(id).getType();
return getEntity(id).get().getType();
return null;
}
public StoredEntity getEntity(int id) {
return entityMap.get(id);
public Optional<StoredEntity> getEntity(int id) {
return Optional.ofNullable(entityMap.get(id));
}
public boolean containsEntity(int id) {

9
core/src/main/java/nl/matsv/viabackwards/api/rewriters/EntityRewriter.java
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@ -29,6 +29,7 @@ import us.myles.ViaVersion.api.data.UserConnection;
import us.myles.ViaVersion.api.minecraft.metadata.MetaType;
import us.myles.ViaVersion.api.minecraft.metadata.Metadata;
import us.myles.ViaVersion.api.minecraft.metadata.types.MetaType1_9;
import us.myles.ViaVersion.exception.CancelException;
import java.util.ArrayList;
import java.util.List;
@ -98,7 +99,13 @@ public abstract class EntityRewriter<T extends BackwardsProtocol> extends Rewrit
}
protected MetaStorage handleMeta(UserConnection user, int entityId, MetaStorage storage) throws Exception {
EntityTracker.StoredEntity entity = getEntityTracker(user).getEntity(entityId);
Optional<EntityTracker.StoredEntity> optEntity = getEntityTracker(user).getEntity(entityId);
if (!optEntity.isPresent()) {
ViaBackwards.getPlatform().getLogger().warning("Metadata for entity id: " + entityId + " not sent because the entity doesn't exist. " + storage);
throw new CancelException();
}
EntityTracker.StoredEntity entity = optEntity.get();
AbstractEntityType type = entity.getType();
List<Metadata> newList = new CopyOnWriteArrayList<>();

8
core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_10to1_11/packets/BlockItemPackets1_11.java
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@ -428,7 +428,8 @@ public class BlockItemPackets1_11 extends BlockItemRewriter<Protocol1_10To1_11>
WindowTracker tracker = user.get(WindowTracker.class);
if (tracker.getInventory() != null && tracker.getInventory().equals("EntityHorse")) {
EntityTracker.ProtocolEntityTracker entTracker = user.get(EntityTracker.class).get(getProtocol());
if (tracker.getEntityId() != -1 && entTracker.getEntity(tracker.getEntityId()).getType().is(EntityType1_11.EntityType.LIAMA))
Optional<EntityTracker.StoredEntity> optEntity = entTracker.getEntity(tracker.getEntityId());
if (optEntity.isPresent() && optEntity.get().getType().is(EntityType1_11.EntityType.LIAMA))
return true;
}
return false;
@ -438,8 +439,9 @@ public class BlockItemPackets1_11 extends BlockItemRewriter<Protocol1_10To1_11>
WindowTracker tracker = user.get(WindowTracker.class);
if (tracker.getInventory() != null && tracker.getInventory().equals("EntityHorse")) {
EntityTracker.ProtocolEntityTracker entTracker = user.get(EntityTracker.class).get(getProtocol());
if (tracker.getEntityId() != -1)
return Optional.of(entTracker.getEntity(tracker.getEntityId()).get(ChestedHorseStorage.class));
Optional<EntityTracker.StoredEntity> optEntity = entTracker.getEntity(tracker.getEntityId());
if (optEntity.isPresent())
return Optional.of(optEntity.get().get(ChestedHorseStorage.class));
}
return Optional.empty();
}