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mike
2026-01-09 04:41:10 +01:00
parent e394d3aba9
commit abef2e2f0b
2 changed files with 94 additions and 72 deletions
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137
src/main/java/puzzle/SwedishGenerator.java
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@@ -38,6 +38,18 @@ public record SwedishGenerator(int[] buff) {
}
}
record rci(int r, int c, int i) { }
static final rci[] IT = new rci[]{
new rci(0, 0, 0), new rci(0, 1, 8), new rci(0, 2, 16), new rci(0, 3, 24), new rci(0, 4, 32), new rci(0, 5, 40), new rci(0, 6, 48), new rci(0, 7, 56), new rci(0, 8, 64),
new rci(1, 0, 1), new rci(1, 1, 9), new rci(1, 2, 17), new rci(1, 3, 25), new rci(1, 4, 33), new rci(1, 5, 41), new rci(1, 6, 49), new rci(1, 7, 57), new rci(1, 8, 65),
new rci(2, 0, 2), new rci(2, 1, 10), new rci(2, 2, 18), new rci(2, 3, 26), new rci(2, 4, 34), new rci(2, 5, 42), new rci(2, 6, 50), new rci(2, 7, 58), new rci(2, 8, 66),
new rci(3, 0, 3), new rci(3, 1, 11), new rci(3, 2, 19), new rci(3, 3, 27), new rci(3, 4, 35), new rci(3, 5, 43), new rci(3, 6, 51), new rci(3, 7, 59), new rci(3, 8, 67),
new rci(4, 0, 4), new rci(4, 1, 12), new rci(4, 2, 20), new rci(4, 3, 28), new rci(4, 4, 36), new rci(4, 5, 44), new rci(4, 6, 52), new rci(4, 7, 60), new rci(4, 8, 68),
new rci(5, 0, 5), new rci(5, 1, 13), new rci(5, 2, 21), new rci(5, 3, 29), new rci(5, 4, 37), new rci(5, 5, 45), new rci(5, 6, 53), new rci(5, 7, 61), new rci(5, 8, 69),
new rci(6, 0, 6), new rci(6, 1, 14), new rci(6, 2, 22), new rci(6, 3, 30), new rci(6, 4, 38), new rci(6, 5, 46), new rci(6, 6, 54), new rci(6, 7, 62), new rci(6, 8, 70),
new rci(7, 0, 7), new rci(7, 1, 15), new rci(7, 2, 23), new rci(7, 3, 31), new rci(7, 4, 39), new rci(7, 5, 47), new rci(7, 6, 55), new rci(7, 7, 63), new rci(7, 8, 71),
};
static final int C = Config.PUZZLE_COLS;
static final double CROSS_Y = (C - 1) / 2.0;
static final int R = Config.PUZZLE_ROWS;
@@ -134,6 +146,7 @@ public record SwedishGenerator(int[] buff) {
record Grid(byte[] g) {
int digitAt(int r, int c) { return g[offset(r, c)] - 48; }
int digitAt(int index) { return g[index] - 48; }
public static int r(int offset) { return offset & 7; }
public static int c(int offset) { return offset >>> 3; }
static int offset(int r, int c) { return r | (c << 3); }
@@ -409,36 +422,34 @@ public record SwedishGenerator(int[] buff) {
Arrays.fill(covV, 0, SIZE, 0);
boolean hasSlots = false;
for (var r = 0; r < R; r++) {
for (var c = 0; c < C; c++) {
if (!grid.isDigitAt(r, c)) continue;
var d = grid.digitAt(r, c);
var nbrs16 = OFFSETS[d];
int rr = r + nbrs16.r, cc = c + nbrs16.c;
if (rr < 0 || rr >= R || cc < 0 || cc >= C || grid.isDigitAt(rr, cc)) continue;
long packedPos = 0;
var n = 0;
while (rr >= 0 && rr < R && cc >= 0 && cc < C && n < MAX_WORD_LENGTH) {
if (grid.isDigitAt(rr, cc)) break;
packedPos |= (long) Grid.offset(rr, cc) << (n * 7);
n++;
rr += nbrs16.dr;
cc += nbrs16.dc;
}
if (n == 0) continue;
hasSlots = true;
if (n < MIN_LEN) {
penalty += 8000;
} else {
if (lenCounts[n] <= 0) penalty += 12000;
}
var horiz = Slot.horiz(d) ? covH : covV;
for (var i = 0; i < n; i++) horiz[Slot.offset(packedPos, i)] += 1;
for (var rci : IT) {
if (!grid.isDigitAt(rci.i)) continue;
var d = grid.digitAt(rci.i);
var nbrs16 = OFFSETS[d];
int rr = rci.r + nbrs16.r, cc = rci.c + nbrs16.c;
if (rr < 0 || rr >= R || cc < 0 || cc >= C || grid.isDigitAt(rr, cc)) continue;
long packedPos = 0;
var n = 0;
while (rr >= 0 && rr < R && cc >= 0 && cc < C && n < MAX_WORD_LENGTH) {
if (grid.isDigitAt(rr, cc)) break;
packedPos |= (long) Grid.offset(rr, cc) << (n * 7);
n++;
rr += nbrs16.dr;
cc += nbrs16.dc;
}
if (n == 0) continue;
hasSlots = true;
if (n < MIN_LEN) {
penalty += 8000;
} else {
if (lenCounts[n] <= 0) penalty += 12000;
}
var horiz = Slot.horiz(d) ? covH : covV;
for (var i = 0; i < n; i++) horiz[Slot.offset(packedPos, i)] += 1;
}
if (!hasSlots) return 1_000_000_000L;
@@ -458,47 +469,45 @@ public record SwedishGenerator(int[] buff) {
var stack = ctx.stack;
int sp, nr, nc;
long size;
for (var r = 0; r < R; r++)
for (var c = 0; c < C; c++) {
idx = Grid.offset(r, c);
if (seen.get(idx) || grid.isLetterAt(idx)) continue;
sp = 0;
stack[sp++] = idx;
seen.set(idx);
size = 0;
for (var rci : IT) {
idx = rci.i;
if (seen.get(idx) || grid.isLetterAt(idx)) continue;
sp = 0;
stack[sp++] = idx;
seen.set(idx);
size = 0;
while (sp > 0) {
var p = stack[--sp];
int rr = Grid.c(p), cc = Grid.r(p);
size++;
while (sp > 0) {
var p = stack[--sp];
int rr = Grid.c(p), cc = Grid.r(p);
size++;
for (var d : nbrs8) {
nr = rr + d.r;
nc = cc + d.c;
if (nr < 0 || nr >= R || nc < 0 || nc >= C) continue;
idx = Grid.offset(nr, nc);
if (seen.get(idx) || grid.isLetterAt(idx)) continue;
seen.set(idx);
stack[sp++] = idx;
}
for (var d : nbrs8) {
nr = rr + d.r;
nc = cc + d.c;
if (nr < 0 || nr >= R || nc < 0 || nc >= C) continue;
idx = Grid.offset(nr, nc);
if (seen.get(idx) || grid.isLetterAt(idx)) continue;
seen.set(idx);
stack[sp++] = idx;
}
if (size >= 2) penalty += (size - 1L) * 120L;
}
if (size >= 2) penalty += (size - 1L) * 120L;
}
int walls, wr, wc;
// dead-end-ish letter cell (3+ walls)
for (var r = 0; r < R; r++)
for (var c = 0; c < C; c++) {
if (grid.isDigitAt(r, c)) continue;
walls = 0;
for (var d : nbrs4) {
wr = r + d.r;
wc = c + d.c;
if (wr < 0 || wr >= R || wc < 0 || wc >= C || grid.isDigitAt(wr, wc)) walls++;
}
if (walls >= 3) penalty += 400;
for (var rci : IT) {
if (grid.isDigitAt(rci.i)) continue;
walls = 0;
for (var d : nbrs4) {
wr = rci.r + d.r;
wc = rci.c + d.c;
if (wr < 0 || wr >= R || wc < 0 || wc >= C || grid.isDigitAt(wr, wc)) walls++;
}
if (walls >= 3) penalty += 400;
}
return penalty;
}