Class CachedRegion

src/main/java/baritone/cache/CachedRegion.java:39–361

@author Brady @since 8/3/2018

 * @since 8/3/2018
 */
public final class CachedRegion implements ICachedRegion {

    private static final byte CHUNK_NOT_PRESENT = 0;
    private static final byte CHUNK_PRESENT = 1;

    /**
     * Magic value to detect invalid cache files, or incompatible cache files saved in an old version of Baritone
     */
    private static final int CACHED_REGION_MAGIC = 456022911;

    /**
     * All of the chunks in this region: A 32x32 array of them.
     */
    private final CachedChunk[][] chunks = new CachedChunk[32][32];

    /**
     * The region x coordinate
     */
    private final int x;

    /**
     * The region z coordinate
     */
    private final int z;

    private final DimensionType dimension;

    /**
     * Has this region been modified since its most recent load or save
     */
    private boolean hasUnsavedChanges;

    CachedRegion(int x, int z, DimensionType dimension) {
        this.x = x;
        this.z = z;
        this.hasUnsavedChanges = false;
        this.dimension = dimension;
    }

    @Override
    public final BlockState getBlock(int x, int y, int z) {
        int adjY = y - dimension.minY();
        CachedChunk chunk = chunks[x >> 4][z >> 4];
        if (chunk != null) {
            return chunk.getBlock(x & 15, adjY, z & 15, dimension);
        }
        return null;
    }

    @Override
    public final boolean isCached(int x, int z) {
        return chunks[x >> 4][z >> 4] != null;
    }

    public final ArrayList<BlockPos> getLocationsOf(String block) {
        ArrayList<BlockPos> res = new ArrayList<>();
        for (int chunkX = 0; chunkX < 32; chunkX++) {
            for (int chunkZ = 0; chunkZ < 32; chunkZ++) {