Press n or j to go to the next uncovered block, b, p or k for the previous block.
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GoCubeOfflineStats,
SmartCubeCapabilities,
SmartCubeCubieState,
} from '@wstein/regrip-core/bindings/smartCubeTransport';
export function formatCapabilities(capabilities: SmartCubeCapabilities): string {
const supported = [
['gyro', capabilities.gyroscope],
['battery', capabilities.battery],
['facelets', capabilities.facelets],
['hardware', capabilities.hardware],
['reset', capabilities.reset],
]
.filter(([, enabled]) => enabled)
.map(([name]) => name);
const controls = capabilities.vendorCommands;
return controls?.length
? `${supported.join(', ')}; controls: ${controls.join(', ')}`
: supported.join(', ');
}
export function formatOfflineStats(stats: GoCubeOfflineStats): {
moves: string;
duration: string;
solves: string;
} {
const hours = Math.floor(stats.timeSeconds / 3600);
const minutes = Math.floor((stats.timeSeconds % 3600) / 60);
const seconds = stats.timeSeconds % 60;
return {
moves: stats.moves.toLocaleString(),
duration: `${hours}:${String(minutes).padStart(2, '0')}:${String(seconds).padStart(2, '0')}`,
solves: stats.solves.toLocaleString(),
};
}
const corners = ['URF', 'UFL', 'ULB', 'UBR', 'DFR', 'DLF', 'DBL', 'DRB'];
const edges = ['UR', 'UF', 'UL', 'UB', 'DR', 'DF', 'DL', 'DB', 'FR', 'FL', 'BL', 'BR'];
// CubeTwister's Superset ENG location order. This is presentation priority
// only: CP/CO/EP/EO remain in their protocol-defined Kociemba order.
const supersetCornerOrder = [0, 4, 3, 7, 2, 6, 1, 5]; // URF DFR UBR DRB ULB DBL UFL DLF
const supersetEdgeOrder = [0, 8, 4, 3, 11, 7, 2, 10, 6, 1, 9, 5]; // UR RF DR BU RB BD UL LB DL FU LF FD
function cycles(
permutation: number[],
orientation: number[],
names: string[],
signs: string[],
): string {
if (
permutation.length !== names.length ||
orientation.length !== names.length ||
permutation.some((piece) => !Number.isInteger(piece) || piece < 0 || piece >= names.length) ||
orientation.some((value) => !Number.isInteger(value) || value < 0 || value >= signs.length)
) {
return '(unavailable)';
}
const visited = new Array(names.length).fill(false);
const result: string[] = [];
for (let start = 0; start < names.length; start += 1) {
if (visited[start]) continue;
const cycle: string[] = [];
let position = start;
while (!visited[position]) {
visited[position] = true;
cycle.push(`${names[permutation[position]]}${signs[orientation[position]]}`);
position = permutation[position]!;
}
if (cycle.length > 1 || orientation[start] !== 0) result.push(`(${cycle.join(',')})`);
}
return result.join(' ');
}
function rotateLeft(value: string, amount: number): string {
const offset = amount % value.length;
return `${value.slice(offset)}${value.slice(0, offset)}`;
}
function inversePermutation(permutation: number[]): number[] | undefined {
const inverse = new Array<number>(permutation.length);
for (let slot = 0; slot < permutation.length; slot += 1) {
const piece = permutation[slot]!;
if (
!Number.isInteger(piece) ||
piece < 0 ||
piece >= permutation.length ||
inverse[piece] !== undefined
) {
return undefined;
}
inverse[piece] = slot;
}
return inverse;
}
function supersetEngCycles(
permutation: number[],
orientation: number[],
names: string[],
order: number[],
orientationModulus: number,
signs: string[],
): string | undefined {
if (
permutation.length !== names.length ||
orientation.length !== names.length ||
order.length !== names.length ||
new Set(order).size !== names.length ||
order.some((value) => !Number.isInteger(value) || value < 0 || value >= names.length) ||
orientation.some(
(value) => !Number.isInteger(value) || value < 0 || value >= orientationModulus,
)
) {
return undefined;
}
const destinationByPiece = inversePermutation(permutation);
if (!destinationByPiece) return undefined;
const visited = new Array(names.length).fill(false);
const result: string[] = [];
for (const start of order) {
if (visited[start]) continue;
const cycle: string[] = [];
let piece = start;
let rotation = 0;
while (!visited[piece]) {
visited[piece] = true;
cycle.push(rotateLeft(names[piece]!, rotation).toLowerCase());
const destination = destinationByPiece[piece]!;
rotation = (rotation + orientation[destination]!) % orientationModulus;
piece = destination;
}
if (cycle.length > 1 || rotation !== 0) result.push(`(${signs[rotation]}${cycle.join(',')})`);
}
return result.join(' ');
}
type ParsedSupersetLocation = { piece: number; rotation: number };
function parseSupersetLocation(
token: string,
names: string[],
orientationModulus: number,
): ParsedSupersetLocation | undefined {
const normalized = token.toUpperCase();
for (let piece = 0; piece < names.length; piece += 1) {
for (let rotation = 0; rotation < orientationModulus; rotation += 1) {
if (rotateLeft(names[piece]!, rotation) === normalized) return { piece, rotation };
}
}
return undefined;
}
function parseSupersetCycles(
cycles: Array<{ sign: string; locations: string[] }>,
names: string[],
orientationModulus: number,
): { permutation: number[]; orientation: number[] } | undefined {
const permutation = Array.from({ length: names.length }, (_, index) => index);
const orientation = new Array<number>(names.length).fill(0);
const seen = new Set<number>();
for (const cycle of cycles) {
const netRotation =
cycle.sign === '+' ? (orientationModulus === 2 ? 1 : 2) : cycle.sign === '-' ? 1 : 0;
if (cycle.sign === '-' && orientationModulus === 2) return undefined;
const entries = cycle.locations.map((token) =>
parseSupersetLocation(token, names, orientationModulus),
);
if (entries.some((entry) => entry === undefined)) return undefined;
const locations = entries as ParsedSupersetLocation[];
if (locations.some(({ piece }) => seen.has(piece))) return undefined;
locations.forEach(({ piece }) => seen.add(piece));
for (let index = 0; index < locations.length; index += 1) {
const current = locations[index]!;
const previous = locations[(index - 1 + locations.length) % locations.length]!;
permutation[current.piece] = previous.piece;
orientation[current.piece] =
index === 0
? (netRotation - previous.rotation + orientationModulus) % orientationModulus
: (current.rotation - previous.rotation + orientationModulus) % orientationModulus;
}
}
return { permutation, orientation };
}
/**
* Parse Regrip's corner/edge SSE permutation projection back into smart-cube
* Kociemba coordinates. Centre cycles are deliberately unsupported because a
* standard 54-facelet cube state does not retain centre orientation.
*/
export function parseSupersetEngPermutation(value: string): SmartCubeCubieState | undefined {
const cycles: Array<{ sign: string; locations: string[] }> = [];
const matcher = /\(([+-]?)([^()]*)\)/g;
let consumed = '';
for (const match of value.matchAll(matcher)) {
consumed += match[0];
const locations = match[2]!
.split(',')
.map((location) => location.trim())
.filter(Boolean);
if (locations.length === 0) return undefined;
cycles.push({ sign: match[1]!, locations });
}
if (consumed.replace(/\s/g, '') !== value.replace(/\s/g, '')) return undefined;
const cornerCycles = cycles.filter((cycle) => cycle.locations[0]!.length === 3);
const edgeCycles = cycles.filter((cycle) => cycle.locations[0]!.length === 2);
if (cornerCycles.length + edgeCycles.length !== cycles.length) return undefined;
const corners = parseSupersetCycles(
cornerCycles,
['URF', 'UFL', 'ULB', 'UBR', 'DFR', 'DLF', 'DBL', 'DRB'],
3,
);
const edges = parseSupersetCycles(
edgeCycles,
['UR', 'UF', 'UL', 'UB', 'DR', 'DF', 'DL', 'DB', 'FR', 'FL', 'BL', 'BR'],
2,
);
if (!corners || !edges) return undefined;
return {
CP: corners.permutation,
CO: corners.orientation,
EP: edges.permutation,
EO: edges.orientation,
};
}
/**
* Singmaster cubie cycle notation projected from Kociemba cubie-level
* coordinates. A corner cycle follows piece arrows, the inverse direction of
* Kociemba's target-slot orientation: o:1 renders `-`, and o:2 renders `+`.
* Edge flips are self-inverse and render `+`; unmarked pieces have o:0.
*/
export function formatSingmasterCycles(state: SmartCubeCubieState): string {
return [
cycles(state.CP, state.CO, corners, ['', '-', '+']),
cycles(state.EP, state.EO, edges, ['', '+']),
]
.filter(Boolean)
.join(' ');
}
/**
* CubeTwister Superset ENG 3×3 permutation cycles from Kociemba coordinates.
* Location tokens encode each corner or edge's orientation by their letter
* order. Smart-cube CP/CO/EP/EO data has no observable center orientation,
* so side-part cycles such as `(++u)` are intentionally omitted. A newline
* groups corner cycles above edge cycles, matching CubeTwister's presentation.
* Roots use the CubeTwister location priority: `URF DFR UBR DRB ULB DBL UFL
* DLF`, followed by `UR RF DR BU RB BD UL LB DL FU LF FD` for edges.
*/
export function formatSupersetEngPermutation(state: SmartCubeCubieState): string {
const cornerCycles = supersetEngCycles(state.CP, state.CO, corners, supersetCornerOrder, 3, [
'',
'-',
'+',
]);
const edgeCycles = supersetEngCycles(state.EP, state.EO, edges, supersetEdgeOrder, 2, ['', '+']);
if (cornerCycles === undefined || edgeCycles === undefined) return '(unavailable)';
return [cornerCycles, edgeCycles].filter(Boolean).join('\n');
}
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