static {
for (BlockFace face1 : new BlockFace[] {BlockFace.THIS, BlockFace.TOP, BlockFace.BOTTOM}) {
for (BlockFace face2 : new BlockFace[] {BlockFace.THIS, BlockFace.WEST, BlockFace.EAST}) {
for (BlockFace face3 : new BlockFace[] {BlockFace.THIS, BlockFace.NORTH, BlockFace.SOUTH}) {
BlockFaces faces = new BlockFaces(face1, face2, face3);
Vector3 offset = faces.getOffset();
byte hash = getOffsetHash(offset);
offsetHash.put(hash, faces);
}
}
}
}
/** Contains several BlockFace array constants and functions to operate on them */
public class BlockFaces implements Iterable<BlockFace>, ByteBitMask {
private static TByteObjectHashMap<BlockFaces> offsetHash = new TByteObjectHashMap<BlockFaces>();
static {
for (BlockFace face1 : new BlockFace[] {BlockFace.THIS, BlockFace.TOP, BlockFace.BOTTOM}) {
for (BlockFace face2 : new BlockFace[] {BlockFace.THIS, BlockFace.WEST, BlockFace.EAST}) {
for (BlockFace face3 : new BlockFace[] {BlockFace.THIS, BlockFace.NORTH, BlockFace.SOUTH}) {
BlockFaces faces = new BlockFaces(face1, face2, face3);
Vector3 offset = faces.getOffset();
byte hash = getOffsetHash(offset);
offsetHash.put(hash, faces);
}
}
}
}
/** The [top-bottom] faces */
public static final BlockFaces TB = new BlockFaces(BlockFace.TOP, BlockFace.BOTTOM);
/** The [bottom-top] faces */
public static final BlockFaces BT = new BlockFaces(BlockFace.BOTTOM, BlockFace.TOP);
/** The [north-east-south-west] faces */
public static final BlockFaces NESW =
new BlockFaces(BlockFace.NORTH, BlockFace.EAST, BlockFace.SOUTH, BlockFace.WEST);
/** The [north-south-east-west] faces */
public static final BlockFaces NSEW =
new BlockFaces(BlockFace.NORTH, BlockFace.SOUTH, BlockFace.EAST, BlockFace.WEST);
/** The [east-west-south-north] faces */
public static final BlockFaces EWSN =
new BlockFaces(BlockFace.EAST, BlockFace.WEST, BlockFace.SOUTH, BlockFace.NORTH);
/** The [north-south-west-east] faces */
public static final BlockFaces NSWE =
new BlockFaces(BlockFace.NORTH, BlockFace.SOUTH, BlockFace.WEST, BlockFace.EAST);
/** The [south-west-north-east] faces */
public static final BlockFaces SWNE =
new BlockFaces(BlockFace.SOUTH, BlockFace.WEST, BlockFace.NORTH, BlockFace.EAST);
/** The [west-north-east-south] faces */
public static final BlockFaces WNES =
new BlockFaces(BlockFace.WEST, BlockFace.NORTH, BlockFace.EAST, BlockFace.SOUTH);
/** The [west-south-east-north] faces */
public static final BlockFaces WSEN =
new BlockFaces(BlockFace.WEST, BlockFace.SOUTH, BlockFace.EAST, BlockFace.NORTH);
/** The [south-north-east-west] faces */
public static final BlockFaces SNEW =
new BlockFaces(BlockFace.SOUTH, BlockFace.NORTH, BlockFace.EAST, BlockFace.WEST);
/** The [west-east-south-north] faces */
public static final BlockFaces WESN =
new BlockFaces(BlockFace.WEST, BlockFace.EAST, BlockFace.SOUTH, BlockFace.NORTH);
/** The [south-north-west-east] faces */
public static final BlockFaces SNWE =
new BlockFaces(BlockFace.SOUTH, BlockFace.NORTH, BlockFace.WEST, BlockFace.EAST);
/** The [east-south-west-north] faces */
public static final BlockFaces ESWN =
new BlockFaces(BlockFace.EAST, BlockFace.SOUTH, BlockFace.WEST, BlockFace.NORTH);
/** The [east-west-north-south] faces */
public static final BlockFaces EWNS =
new BlockFaces(BlockFace.EAST, BlockFace.WEST, BlockFace.NORTH, BlockFace.SOUTH);
/** The [north-east-south-west-bottom] faces */
public static final BlockFaces NESWB = NESW.append(BlockFace.BOTTOM);
/** The [east-west-south-north-bottom] faces */
public static final BlockFaces EWSNB = EWSN.append(BlockFace.BOTTOM);
/** The [north-east-south-west-top] faces */
public static final BlockFaces NESWT = NESW.append(BlockFace.TOP);
/** The [north-east-south-west-bottom-top] faces */
public static final BlockFaces NESWBT = NESW.append(BT);
/** The [bottom-top-east-west-north-south] faces */
public static final BlockFaces BTEWNS = BT.append(EWNS);
/** The [bottom-top-north-south-west-east] faces */
public static final BlockFaces BTNSWE = BT.append(NSWE);
/** The [north-south-east-west-bottom] faces */
public static final BlockFaces NSEWB = NSEW.append(BlockFace.BOTTOM);
/** The [north-south-west-east-bottom] faces */
public static final BlockFaces NSWEB = NSWE.append(BlockFace.BOTTOM);
/** The [north-east-south-west-bottom-this] faces */
public static final BlockFaces NESWBTHIS = NESWB.append(BlockFace.THIS);
/** The [top-bottom-north-south-east-west-this] faces */
public static final BlockFaces ALL = new BlockFaces(BlockFace.values());
/** A constant containing no faces at all */
public static final BlockFaces NONE = new BlockFaces();
private final byte mask;
private final BlockFace[] faces;
private final Vector3 offset;
public BlockFaces(BlockFace... blockfaces) {
this.faces = blockfaces;
byte mask = 0;
Vector3 offsetc = new Vector3();
for (BlockFace face : this.faces) {
offsetc = offsetc.add(face.getOffset());
mask |= face.getMask();
}
offset = offsetc;
this.mask = mask;
}
@Override
public byte getMask() {
return this.mask;
}
public Vector3 getOffset() {
return offset;
}
@Override
public Iterator<BlockFace> iterator() {
return Arrays.asList(this.faces).iterator();
}
/**
* Gets the total amount of BlockFace objects contained in this constant
*
* @return the amount of BlockFace objects
*/
public int size() {
return this.faces.length;
}
/**
* Appends another array of block faces to this BlockFaces object
*
* @param blockFaces to append
* @return a new BlockFaces object with the faces appended
*/
public BlockFaces append(BlockFaces blockFaces) {
return this.append(blockFaces.faces);
}
/**
* Appends another array of block faces to this BlockFaces object
*
* @param blockFaces to append
* @return a new BlockFaces object with the faces appended
*/
public BlockFaces append(BlockFace... blockFaces) {
BlockFace[] faces = new BlockFace[this.faces.length + blockFaces.length];
for (int i = 0; i < this.faces.length; i++) {
faces[i] = this.faces[i];
}
for (int i = 0; i < blockFaces.length; i++) {
faces[i + this.faces.length] = blockFaces[i];
}
return new BlockFaces(faces);
}
/**
* Checks if this block face constant contains the face given
*
* @param face to look for
* @return True if found, False if not
*/
public boolean contains(BlockFace face) {
for (BlockFace bface : this.faces) {
if (bface == face) {
return true;
}
}
return false;
}
/**
* Gets the index of a face in this constant
*
* @param face to get the index of
* @param def value to return if not found
* @return the index in the constant, or the def value if not found
*/
public int indexOf(BlockFace face, int def) {
for (int i = 0; i < this.faces.length; i++) {
if (this.faces[i] == face) {
return i;
}
}
return def;
}
/**
* Gets the previous BlockFace in this circular BlockFaces constant<br>
* This function calls next using a negative offset
*
* @see BlockFaces.next(BlockFace from, int offset);
* @param from the BlockFace to count
* @param offset index in this range
* @return the face at the offset
*/
public BlockFace previous(BlockFace from, int offset) {
return this.next(from, -offset);
}
/**
* Gets the next BlockFace in this circular BlockFaces constant<br>
* <br>
* <b>For example:</b><br>
* BlockFaces.NESW.next(BlockFace.EAST, 2) == BlockFace.WEST<br>
* BlockFaces.NESW.next(BlockFace.WEST, 1) == BlockFace.NORTH<br>
* BlockFaces.NESW.next(BlockFace.SOUTH, -3) == BlockFace.WEST<br>
*
* @param from the BlockFace to count
* @param offset index in this range
* @return the face at the offset
*/
public BlockFace next(BlockFace from, int offset) {
int index = this.indexOf(from, -1);
if (index == -1) {
throw new IllegalArgumentException(
"This BlockFaces constant does not contain the face specified");
}
index = (index + offset) % this.faces.length;
if (index < 0) {
index += this.faces.length;
}
return this.faces[index];
}
/**
* Gets a random BlockFace from this BlockFaces constant
*
* @param random to use
* @return a random BlockFace
*/
public BlockFace random(Random random) {
return this.faces[random.nextInt(this.faces.length)];
}
/**
* Gets the face from this constant at the index given<br>
* If the index is out of range, the first or last element is returned
*
* @param index to get at
* @return the BlockFace
*/
public BlockFace get(int index) {
if (index < 0) {
return this.faces[0];
} else if (index >= this.faces.length) {
return this.faces[this.faces.length - 1];
} else {
return this.faces[index];
}
}
/**
* Gets the face from this constant at the index given<br>
* If the index is out of range, the default is returned
*
* @param index to get at
* @param def if the index is out of range
* @return the BlockFace
*/
public BlockFace get(int index, BlockFace def) {
if (index < 0 || index >= this.faces.length) {
return def;
}
return this.faces[index];
}
private static byte getOffsetHash(Vector3 offset) {
offset = offset.normalize();
offset = offset.round();
int x = offset.getFloorX();
int y = offset.getFloorY();
int z = offset.getFloorZ();
x += 1;
y += 1;
z += 1;
return (byte) (x | y << 2 | z << 4);
}
public static BlockFaces fromOffset(Vector3 offset) {
return offsetHash.get(getOffsetHash(offset));
}
}
