public EntityRef newInstance(BlockFamily blockFamily, EntityRef blockEntity) {
if (blockFamily == null) {
return EntityRef.NULL;
}
EntityBuilder builder = entityManager.newBuilder("engine:blockItemBase");
if (blockFamily.getArchetypeBlock().getLuminance() > 0) {
builder.addComponent(new LightComponent());
}
// Copy the components from block prefab into the block item
for (Component component : blockEntity.iterateComponents()) {
if (component.getClass().getAnnotation(AddToBlockBasedItem.class) != null) {
builder.addComponent(entityManager.getComponentLibrary().copy(component));
}
}
ItemComponent item = builder.getComponent(ItemComponent.class);
if (blockFamily.getArchetypeBlock().isStackable()) {
item.stackId = "block:" + blockFamily.getURI().toString();
item.stackCount = (byte) 1;
}
BlockItemComponent blockItem = builder.getComponent(BlockItemComponent.class);
blockItem.blockFamily = blockFamily;
return builder.build();
}
@Override
public EntityRef deserializeEntity(EntityData.Entity entityData) {
EntityRef entity = entityManager.createEntityRefWithId(entityData.getId());
if (entityData.hasParentPrefab()
&& !entityData.getParentPrefab().isEmpty()
&& prefabManager.exists(entityData.getParentPrefab())) {
Prefab prefab = prefabManager.getPrefab(entityData.getParentPrefab());
for (Component component : prefab.listComponents()) {
String componentName = ComponentUtil.getComponentClassName(component.getClass());
if (!containsIgnoreCase(componentName, entityData.getRemovedComponentList())) {
entity.addComponent(componentLibrary.copy(component));
}
}
entity.addComponent(new EntityInfoComponent(entityData.getParentPrefab()));
}
for (EntityData.Component componentData : entityData.getComponentList()) {
Class<? extends Component> componentClass = getComponentClass(componentData);
if (componentClass == null) continue;
if (!entity.hasComponent(componentClass)) {
entity.addComponent(deserializeComponent(componentData));
} else {
deserializeComponentOnto(entity.getComponent(componentClass), componentData);
}
}
return entity;
}
/**
* Use this method instead of {@link #newInstance(BlockFamily)} to modify entity properties like
* the persistence flag before it gets created.
*
* @param blockFamily must not be null
*/
public EntityBuilder newBuilder(BlockFamily blockFamily, int quantity) {
EntityBuilder builder = entityManager.newBuilder("engine:blockItemBase");
if (blockFamily.getArchetypeBlock().getLuminance() > 0) {
builder.addComponent(new LightComponent());
}
// Copy the components from block prefab into the block item
Prefab prefab = Assets.getPrefab(blockFamily.getArchetypeBlock().getPrefab());
if (prefab != null) {
for (Component component : prefab.iterateComponents()) {
if (component.getClass().getAnnotation(AddToBlockBasedItem.class) != null) {
builder.addComponent(entityManager.getComponentLibrary().copy(component));
}
}
}
DisplayNameComponent displayNameComponent = builder.getComponent(DisplayNameComponent.class);
displayNameComponent.name = blockFamily.getDisplayName();
ItemComponent item = builder.getComponent(ItemComponent.class);
if (blockFamily.getArchetypeBlock().isStackable()) {
item.stackId = "block:" + blockFamily.getURI().toString();
item.stackCount = (byte) quantity;
}
BlockItemComponent blockItem = builder.getComponent(BlockItemComponent.class);
blockItem.blockFamily = blockFamily;
return builder;
}
private void serializeComponentFull(
Component component,
boolean ignoreIfNoFields,
FieldSerializeCheck<Component> fieldCheck,
EntityData.PackedEntity.Builder entityData,
ByteString.Output entityFieldIds,
ByteString.Output componentFieldCounts,
boolean componentInitial) {
ComponentMetadata<?> componentMetadata = componentLibrary.getMetadata(component.getClass());
if (componentMetadata == null) {
logger.error("Unregistered component type: {}", component.getClass());
return;
}
Serializer serializer = typeSerializationLibrary.getSerializerFor(componentMetadata);
byte fieldCount = 0;
for (ReplicatedFieldMetadata field : componentMetadata.getFields()) {
if (fieldCheck.shouldSerializeField(field, component, componentInitial)) {
PersistedData fieldValue = serializer.serialize(field, component, serializationContext);
if (!fieldValue.isNull()) {
entityFieldIds.write(field.getId());
entityData.addFieldValue(((ProtobufPersistedData) fieldValue).getValue());
fieldCount++;
}
}
}
if (fieldCount != 0 || !ignoreIfNoFields) {
entityData.addComponentId(idTable.get(component.getClass()));
componentFieldCounts.write(fieldCount);
}
}
private EntityData.Entity serializeEntityFull(EntityRef entityRef) {
EntityData.Entity.Builder entity = EntityData.Entity.newBuilder();
entity.setId(entityRef.getId());
for (Component component : entityRef.iterateComponents()) {
if (component.getClass().equals(EntityInfoComponent.class)) continue;
EntityData.Component componentData = serializeComponent(component);
if (componentData != null) {
entity.addComponent(componentData);
}
}
return entity.build();
}
private void cleanUpTemporaryEntity(EntityRef entity) {
Prefab prefab = entity.getParentPrefab();
for (Component comp : entity.iterateComponents()) {
if (!COMMON_BLOCK_COMPONENTS.contains(comp.getClass())
&& (prefab == null || !prefab.hasComponent(comp.getClass()))) {
entity.removeComponent(comp.getClass());
}
}
entity.removeComponent(NetworkComponent.class);
if (prefab != null) {
for (Component comp : prefab.iterateComponents()) {
Component currentComp = entity.getComponent(comp.getClass());
if (currentComp == null) {
entity.addComponent(entityManager.getComponentLibrary().copy(comp));
} else {
ComponentMetadata<?> metadata =
entityManager.getComponentLibrary().getMetadata(comp.getClass());
boolean changed = false;
for (FieldMetadata field : metadata.getFields()) {
Object expected = field.getValue(comp);
if (!Objects.equal(expected, field.getValue(currentComp))) {
field.setValue(currentComp, expected);
changed = true;
}
}
if (changed) {
entity.saveComponent(currentComp);
}
}
}
}
entityManager.destroyEntityWithoutEvents(entity);
}
private EntityData.PackedEntity.Builder serializeEntityFull(
EntityRef entityRef, FieldSerializeCheck<Component> fieldCheck) {
EntityData.PackedEntity.Builder entity = EntityData.PackedEntity.newBuilder();
ByteString.Output fieldIds = ByteString.newOutput();
ByteString.Output componentFieldCounts = ByteString.newOutput();
for (Component component : entityRef.iterateComponents()) {
if (!componentSerializeCheck.serialize(componentLibrary.getMetadata(component.getClass()))) {
continue;
}
serializeComponentFull(
component, false, fieldCheck, entity, fieldIds, componentFieldCounts, true);
}
entity.setFieldIds(fieldIds.toByteString());
entity.setComponentFieldCounts(componentFieldCounts.toByteString());
return entity;
}
private void serializeComponentDelta(
Component oldComponent,
Component newComponent,
FieldSerializeCheck<Component> fieldCheck,
EntityData.PackedEntity.Builder entityData,
ByteString.Output entityFieldIds,
ByteString.Output componentFieldCounts,
boolean componentInitial) {
ComponentMetadata<?> componentMetadata = componentLibrary.getMetadata(oldComponent.getClass());
if (componentMetadata == null) {
logger.error("Unregistered component type: {}", oldComponent.getClass());
return;
}
byte fieldCount = 0;
Serializer serializer = typeSerializationLibrary.getSerializerFor(componentMetadata);
for (ReplicatedFieldMetadata field : componentMetadata.getFields()) {
if (fieldCheck.shouldSerializeField(field, newComponent, componentInitial)) {
Object oldValue = field.getValue(oldComponent);
Object newValue = field.getValue(newComponent);
if (!Objects.equal(oldValue, newValue)) {
PersistedData data = serializer.serializeValue(field, newValue, serializationContext);
if (!data.isNull()) {
entityFieldIds.write(field.getId());
entityData.addFieldValue(((ProtobufPersistedData) data).getValue());
fieldCount++;
} else {
logger.error(
"Exception serializing component type: {}, field: {} - returned null",
componentMetadata,
field);
}
}
}
}
if (fieldCount > 0) {
entityData.addComponentId(idTable.get(newComponent.getClass()));
componentFieldCounts.write(fieldCount);
}
}
/**
* Transforms a block entity with the change of block type. This is driven from the delta between
* the old and new block type prefabs, but takes into account changes made to the block entity.
*
* @param blockEntity The entity to update
* @param oldType The previous type of the block
* @param type The new type of the block
*/
private void updateBlockEntityComponents(
EntityRef blockEntity,
Block oldType,
Block type,
Set<Class<? extends Component>> retainComponents) {
BlockComponent blockComponent = blockEntity.getComponent(BlockComponent.class);
Optional<Prefab> oldPrefab = oldType.getPrefab();
EntityBuilder oldEntityBuilder = entityManager.newBuilder(oldPrefab.orElse(null));
oldEntityBuilder.addComponent(
new BlockComponent(oldType, new Vector3i(blockComponent.getPosition())));
BeforeEntityCreated oldEntityEvent =
new BeforeEntityCreated(oldPrefab.orElse(null), oldEntityBuilder.iterateComponents());
blockEntity.send(oldEntityEvent);
for (Component comp : oldEntityEvent.getResultComponents()) {
oldEntityBuilder.addComponent(comp);
}
Optional<Prefab> newPrefab = type.getPrefab();
EntityBuilder newEntityBuilder = entityManager.newBuilder(newPrefab.orElse(null));
newEntityBuilder.addComponent(
new BlockComponent(type, new Vector3i(blockComponent.getPosition())));
BeforeEntityCreated newEntityEvent =
new BeforeEntityCreated(newPrefab.orElse(null), newEntityBuilder.iterateComponents());
blockEntity.send(newEntityEvent);
for (Component comp : newEntityEvent.getResultComponents()) {
newEntityBuilder.addComponent(comp);
}
for (Component component : blockEntity.iterateComponents()) {
if (!COMMON_BLOCK_COMPONENTS.contains(component.getClass())
&& !entityManager
.getComponentLibrary()
.getMetadata(component.getClass())
.isRetainUnalteredOnBlockChange()
&& !newEntityBuilder.hasComponent(component.getClass())
&& !retainComponents.contains(component.getClass())) {
blockEntity.removeComponent(component.getClass());
}
}
blockComponent.setBlock(type);
blockEntity.saveComponent(blockComponent);
HealthComponent health = blockEntity.getComponent(HealthComponent.class);
if (health == null && type.isDestructible()) {
blockEntity.addComponent(
new HealthComponent(type.getHardness(), type.getHardness() / BLOCK_REGEN_SECONDS, 1.0f));
} else if (health != null && !type.isDestructible()) {
blockEntity.removeComponent(HealthComponent.class);
} else if (health != null && type.isDestructible()) {
health.maxHealth = type.getHardness();
health.currentHealth = Math.min(health.currentHealth, health.maxHealth);
blockEntity.saveComponent(health);
}
for (Component comp : newEntityBuilder.iterateComponents()) {
copyIntoPrefab(blockEntity, comp, retainComponents);
}
}
private EntityData.Entity serializeEntityDelta(EntityRef entityRef, Prefab prefab) {
EntityData.Entity.Builder entity = EntityData.Entity.newBuilder();
entity.setId(entityRef.getId());
entity.setParentPrefab(prefab.getName());
for (Component component : entityRef.iterateComponents()) {
if (component.getClass().equals(EntityInfoComponent.class)) continue;
Component prefabComponent = prefab.getComponent(component.getClass());
EntityData.Component componentData;
if (prefabComponent == null) {
componentData = serializeComponent(component);
} else {
componentData = serializeComponent(prefabComponent, component);
}
if (componentData != null) {
entity.addComponent(componentData);
}
}
for (Component prefabComponent : prefab.listComponents()) {
if (!entityRef.hasComponent(prefabComponent.getClass())) {
entity.addRemovedComponent(ComponentUtil.getComponentClassName(prefabComponent.getClass()));
}
}
return entity.build();
}
private EntityData.Component serializeComponent(Component base, Component delta) {
ComponentMetadata<?> componentMetadata = componentLibrary.getMetadata(base.getClass());
if (componentMetadata == null) {
logger.log(Level.SEVERE, "Unregistered component type: " + base.getClass());
return null;
}
EntityData.Component.Builder componentMessage = EntityData.Component.newBuilder();
if (useLookupTables) {
componentMessage.setTypeIndex(componentIdTable.inverse().get(base.getClass()));
} else {
componentMessage.setType(ComponentUtil.getComponentClassName(delta));
}
boolean changed = false;
for (FieldMetadata field : componentMetadata.iterateFields()) {
try {
Object origValue = field.getValue(base);
Object deltaValue = field.getValue(delta);
if (!Objects.equal(origValue, deltaValue)) {
EntityData.Value value = field.serialize(deltaValue);
componentMessage.addField(
EntityData.NameValue.newBuilder().setName(field.getName()).setValue(value).build());
changed = true;
}
} catch (IllegalAccessException e) {
logger.log(
Level.SEVERE, "Exception during serializing component type: " + base.getClass(), e);
} catch (InvocationTargetException e) {
logger.log(
Level.SEVERE, "Exception during serializing component type: " + base.getClass(), e);
}
}
if (changed) {
return componentMessage.build();
}
return null;
}
@Override
public EntityData.Component serializeComponent(Component component) {
ComponentMetadata<?> componentMetadata = componentLibrary.getMetadata(component.getClass());
if (componentMetadata == null) {
logger.log(Level.SEVERE, "Unregistered component type: " + component.getClass());
return null;
}
EntityData.Component.Builder componentMessage = EntityData.Component.newBuilder();
if (useLookupTables) {
componentMessage.setTypeIndex(componentIdTable.inverse().get(component.getClass()));
} else {
componentMessage.setType(ComponentUtil.getComponentClassName(component));
}
for (FieldMetadata field : componentMetadata.iterateFields()) {
try {
Object rawValue = field.getValue(component);
if (rawValue == null) continue;
EntityData.Value value = field.serialize(rawValue);
if (value == null) continue;
componentMessage.addField(
EntityData.NameValue.newBuilder().setName(field.getName()).setValue(value).build());
} catch (IllegalAccessException e) {
logger.log(
Level.SEVERE,
"Exception during serializing component type: " + component.getClass(),
e);
} catch (InvocationTargetException e) {
logger.log(
Level.SEVERE,
"Exception during serializing component type: " + component.getClass(),
e);
}
}
return componentMessage.build();
}
private Component deserializeOnto(
Component component,
EntityData.Component componentData,
ComponentMetadata componentMetadata) {
try {
for (EntityData.NameValue field : componentData.getFieldList()) {
FieldMetadata fieldInfo = componentMetadata.getField(field.getName());
if (fieldInfo == null) continue;
Object value = fieldInfo.deserialize(field.getValue());
if (value == null) continue;
fieldInfo.setValue(component, value);
}
return component;
} catch (InvocationTargetException e) {
logger.log(
Level.SEVERE, "Exception during serializing component type: " + component.getClass(), e);
} catch (IllegalAccessException e) {
logger.log(
Level.SEVERE, "Exception during serializing component type: " + component.getClass(), e);
}
return null;
}
private EntityData.PackedEntity.Builder serializeEntityDelta(
EntityRef entityRef, Prefab prefab, FieldSerializeCheck<Component> fieldCheck) {
EntityData.PackedEntity.Builder entity = EntityData.PackedEntity.newBuilder();
entity.setParentPrefabUri(prefab.getName());
Set<Class<? extends Component>> presentClasses = Sets.newHashSet();
ByteString.Output fieldIds = ByteString.newOutput();
ByteString.Output componentFieldCounts = ByteString.newOutput();
for (Component component : entityRef.iterateComponents()) {
if (!componentSerializeCheck.serialize(componentLibrary.getMetadata(component.getClass()))) {
continue;
}
presentClasses.add(component.getClass());
Component prefabComponent = prefab.getComponent(component.getClass());
if (prefabComponent == null) {
serializeComponentFull(
component, false, fieldCheck, entity, fieldIds, componentFieldCounts, true);
} else {
serializeComponentDelta(
prefabComponent, component, fieldCheck, entity, fieldIds, componentFieldCounts, true);
}
}
entity.setFieldIds(fieldIds.toByteString());
entity.setComponentFieldCounts(componentFieldCounts.toByteString());
for (Component prefabComponent : prefab.iterateComponents()) {
if (!presentClasses.contains(prefabComponent.getClass())
&& componentSerializeCheck.serialize(
componentLibrary.getMetadata(prefabComponent.getClass()))) {
entity.addRemovedComponent(idTable.get(prefabComponent.getClass()));
}
}
return entity;
}