WorldEdit Schematic Loader

WorldEditSchematicLoader.java

private static final BuildingPreviewExtent customExtent;

    private abstract static class BuildingPreviewExtent implements Extent {
        @Override
        public <T extends BlockStateHolder<T>> boolean setBlock(BlockVector3 position, T block) {
            return false;
        }
    }

    static {
        customExtent = new BuildingPreviewExtent() {
            @Override
            public boolean setBiome(BlockVector2 position, BaseBiome biome) {
                return false;
            }

            @Nullable
            @Override
            public Operation commit() {
                return null;
            }

            @Override
            public BlockState getBlock(BlockVector3 position) {
                return null;
            }

            @Override
            public BaseBlock getFullBlock(BlockVector3 position) {
                return null;
            }

            @Override
            public BaseBiome getBiome(BlockVector2 position) {
                return null;
            }

            @Override
            public BlockVector3 getMinimumPoint() {
                return null;
            }

            @Override
            public BlockVector3 getMaximumPoint() {
                return null;
            }

            @Override
            public List<? extends Entity> getEntities(Region region) {
                return null;
            }

            @Override
            public List<? extends Entity> getEntities() {
                return null;
            }

            @Nullable
            @Override
            public Entity createEntity(com.sk89q.worldedit.util.Location location, BaseEntity entity) {
                return null;
            }
        };
    }

    public static BuildingPreview loadSchematic(File saveFile, Location loc, int angle) throws IOException, WorldEditException {
        ClipboardFormat format = ClipboardFormats.findByFile(saveFile);
        try (ClipboardReader reader = format.getReader(new FileInputStream(saveFile))) {
            Clipboard clipboard = reader.read();
            ClipboardHolder clipboardHolder = new ClipboardHolder(clipboard);
            clipboardHolder.setTransform(new AffineTransform().rotateY(angle));

            Operation operation = clipboardHolder
                    .createPaste(customExtent)
                    .to(BukkitAdapter.asBlockVector(loc))
                    .build();
            Operations.complete(operation);

            List<StringBlock> blocks = new ArrayList<>();
            BuildingPreview pv = new BuildingPreview(blocks);

            Region region = clipboard.getRegion();
            BlockVector3 minimumPoint = region.getMinimumPoint();
            BlockVector3 maximumPoint = region.getMaximumPoint();

            pv.p1 = new StringLocation(loc.getWorld(), minimumPoint);
            pv.p2 = new StringLocation(loc.getWorld(), maximumPoint);

            for (int y = minimumPoint.getY(); y <= maximumPoint.getY(); y++) {
                for (int x = minimumPoint.getX(); x <= maximumPoint.getX(); x++) {
                    for (int z = minimumPoint.getZ(); z <= maximumPoint.getZ(); z++) {
                        final BaseBlock fullBlock = clipboard.getFullBlock(Vector3.toBlockPoint(x, y, z));
                        if (fullBlock == null) continue;

                        blocks.add(new StringBlock(loc.getWorld(), x, y, z, BukkitAdapter.adapt(fullBlock)));
                    }
                }
            }

            return pv;
        }
    }