public BlockFamily loadWithShape(BlockUri uri) {
try (ModuleContext.ContextSpan ignored = ModuleContext.setContext(uri.getModuleName())) {
BlockShape shape = cubeShape;
if (uri.hasShape()) {
AssetUri shapeUri = uri.getShapeUri();
if (!shapeUri.isValid()) {
return null;
}
shape = (BlockShape) Assets.get(shapeUri);
if (shape == null) {
return null;
}
}
AssetUri blockDefUri =
new AssetUri(AssetType.BLOCK_DEFINITION, uri.getModuleName(), uri.getFamilyName());
BlockDefinition def;
if (assetManager.getAssetURLs(blockDefUri).isEmpty()) {
// An auto-block
def = new BlockDefinition();
} else {
def =
createBlockDefinition(
inheritData(blockDefUri, readJson(blockDefUri).getAsJsonObject()));
}
def.shape = (shape.getURI().toSimpleString());
if (shape.isCollisionYawSymmetric()) {
Block block = constructSingleBlock(blockDefUri, def);
if (block.getDisplayName().isEmpty()) {
block.setDisplayName(shape.getDisplayName());
} else if (!shape.getDisplayName().isEmpty()) {
block.setDisplayName(block.getDisplayName() + " " + shape.getDisplayName());
}
return new SymmetricFamily(uri, block, def.categories);
} else {
Map<Side, Block> blockMap = Maps.newEnumMap(Side.class);
constructHorizontalBlocks(blockDefUri, def, blockMap);
for (Block block : blockMap.values()) {
if (block.getDisplayName().isEmpty()) {
block.setDisplayName(shape.getDisplayName());
} else if (!shape.getDisplayName().isEmpty()) {
block.setDisplayName(block.getDisplayName() + " " + shape.getDisplayName());
}
}
return new HorizontalBlockFamily(uri, blockMap, def.categories);
}
} catch (Exception e) {
logger.error("Error loading block shape {}", uri, e);
}
return null;
}
private JsonObject inheritData(AssetUri rootAssetUri, JsonObject blockDefJson) {
JsonObject parentObj = blockDefJson;
while (parentObj.has("basedOn")) {
AssetUri parentUri =
Assets.resolveAssetUri(
AssetType.BLOCK_DEFINITION, parentObj.get("basedOn").getAsString());
if (rootAssetUri.equals(parentUri)) {
logger.error("Circular inheritance detected in {}", rootAssetUri);
break;
} else if (!parentUri.isValid()) {
logger.error(
"{} based on invalid uri: {}", rootAssetUri, parentObj.get("basedOn").getAsString());
break;
}
JsonObject parent = readJson(parentUri).getAsJsonObject();
JsonMergeUtil.mergeOnto(parent, blockDefJson);
parentObj = parent;
}
return blockDefJson;
}
