tour/puzzle-generator
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

introduce bitloops

Browse Source
This commit is contained in:
mike
2026-01-20 22:48:38 +01:00
parent b66437bb70
commit 85fa317eec
6 changed files with 95 additions and 88 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
src/main/java/puzzle/Masker.java
View File

@@ -35,24 +35,24 @@ public final class Masker {
return findOffendingClue(c) == -1;
}
public int findOffendingClue(Clues grid) {
if (((grid.xlo & grid.rlo) & grid.lo) != X) return numberOfTrailingZeros((grid.xlo & grid.rlo) & grid.lo);
if (((grid.xhi & grid.rhi) & grid.hi) != X) return 64 | numberOfTrailingZeros((grid.xhi & grid.rhi) & grid.hi);
public int findOffendingClue(Clues c) {
if (((c.xlo & c.rlo) & c.lo) != X) return numberOfTrailingZeros((c.xlo & c.rlo) & c.lo);
if (((c.xhi & c.rhi) & c.hi) != X) return 64 | numberOfTrailingZeros((c.xhi & c.rhi) & c.hi);
var num = 0;
for (var bits = grid.lo; bits != X; bits &= bits - 1) activeCIdx[num++] = numberOfTrailingZeros(bits);
for (var bits = grid.hi; bits != X; bits &= bits - 1) activeCIdx[num++] = 64 | numberOfTrailingZeros(bits);
for (var bits = c.lo; bits != X; bits &= bits - 1) activeCIdx[num++] = numberOfTrailingZeros(bits);
for (var bits = c.hi; bits != X; bits &= bits - 1) activeCIdx[num++] = 64 | numberOfTrailingZeros(bits);
if (num == 0) return -1;
var start = rng.randint0_SIZE() % num;
var n = 0;
for (var i = 0; i < num; i++) {
var idx = activeCIdx[(start + i) % num];
int dir = grid.getDir(idx);
var idx = activeCIdx[(start + i) % num];
int dir = c.getDir(idx);
var key = Slot.packSlotKey(idx, dir);
long sLo = PATH_LO[key], sHi = PATH_HI[key];
long hLo = sLo & grid.lo, hHi = sHi & grid.hi;
long hLo = sLo & c.lo, hHi = sHi & c.hi;
if (Slotinfo.increasing(key)) {
if (hLo != X) {
sLo &= (1L << numberOfTrailingZeros(hLo)) - 1;
@@ -121,26 +121,26 @@ public final class Masker {
if (Long.bitCount(rayLo) + Long.bitCount(rayHi) >= MIN_LEN)
visitor.visit(key, rayLo, rayHi);
}
private static boolean validSlotRev(long lo, long hi, int min, int key) {
private static boolean validSlotRev(long lo, long hi, int key) {
var rayLo = PATH_LO[key];
var rayHi = PATH_HI[key];
// only consider clue cells
var hitsLo = rayLo & lo;
var hitsHi = rayHi & hi;
if (hitsHi != X) return (Long.bitCount(rayHi & -(1L << 63 - numberOfLeadingZeros(hitsHi) << 1)) >= min);
else if (hitsLo != X) return (Long.bitCount(rayLo & -(1L << 63 - numberOfLeadingZeros(hitsLo) << 1)) + Long.bitCount(rayHi) >= min);
else return (Long.bitCount(rayLo) + Long.bitCount(rayHi) >= min);
if (hitsHi != X) return (Long.bitCount(rayHi & -(1L << 63 - numberOfLeadingZeros(hitsHi) << 1)) >= SwedishGenerator.MIN_LEN);
else if (hitsLo != X) return (Long.bitCount(rayLo & -(1L << 63 - numberOfLeadingZeros(hitsLo) << 1)) + Long.bitCount(rayHi) >= SwedishGenerator.MIN_LEN);
else return (Long.bitCount(rayLo) + Long.bitCount(rayHi) >= SwedishGenerator.MIN_LEN);
}
private static boolean validSlot(long lo, long hi, int min, int key) {
private static boolean validSlot(long lo, long hi, int key) {
var rayLo = PATH_LO[key];
var rayHi = PATH_HI[key];
var hitsLo = rayLo & lo;
var hitsHi = rayHi & hi;
if (hitsLo != X) return (Long.bitCount(rayLo & ((1L << numberOfTrailingZeros(hitsLo)) - 1)) >= min);
else if (hitsHi != X) return (Long.bitCount(rayLo) + Long.bitCount(rayHi & ((1L << numberOfTrailingZeros(hitsHi)) - 1)) >= min);
else return (Long.bitCount(rayLo) + Long.bitCount(rayHi) >= min);
if (hitsLo != X) return (Long.bitCount(rayLo & ((1L << numberOfTrailingZeros(hitsLo)) - 1)) >= SwedishGenerator.MIN_LEN);
else if (hitsHi != X) return (Long.bitCount(rayLo) + Long.bitCount(rayHi & ((1L << numberOfTrailingZeros(hitsHi)) - 1)) >= SwedishGenerator.MIN_LEN);
else return (Long.bitCount(rayLo) + Long.bitCount(rayHi) >= SwedishGenerator.MIN_LEN);
}
private static void processSlot(Clues c, SlotVisitor visitor, int key) {
var rayLo = PATH_LO[key];
@@ -198,10 +198,6 @@ public final class Masker {
long lo_cl = grid.lo, hi_cl = grid.hi;
var penalty = (((long) Math.abs(grid.clueCount() - clueSize)) * 16000L);
var hasSlots = false;
/* if (!isValid(grid, 2)) {
throw new RuntimeException("Invalid grid configuration for mask fitness calculation");
//return 1_000_000_000L;
}*/
var numClues = 0;
for (var bits = lo_cl; bits != X; bits &= bits - 1) {
@@ -653,8 +649,8 @@ public final class Masker {
public static Clues createEmpty() { return new Clues(0, 0, 0, 0, 0, 0, 0, 0); }
public boolean hasRoomForClue(int key) {
if (Slotinfo.increasing(key)) if (!validSlot(lo, hi, MIN_LEN, key)) return false;
return validSlotRev(lo, hi, MIN_LEN, key);
if (Slotinfo.increasing(key)) if (!validSlot(lo, hi, key)) return false;
return validSlotRev(lo, hi, key);
}
public void setClueLo(long mask, byte idx) {