struct game_params {
int w, h;
+ float expandfactor;
};
#define INDEX(state, x, y) (((y) * (state)->w) + (x))
game_params *ret = snew(game_params);
ret->w = ret->h = 7;
+ ret->expandfactor = 0.0F;
return ret;
}
*params = ret = snew(game_params);
ret->w = w;
ret->h = h;
+ ret->expandfactor = 0.0F;
return TRUE;
}
game_params *ret = default_params();
ret->w = ret->h = atoi(string);
- while (*string && isdigit(*string)) string++;
+ ret->expandfactor = 0.0F;
+ while (*string && isdigit((unsigned char)*string)) string++;
if (*string == 'x') {
string++;
ret->h = atoi(string);
+ while (*string && isdigit((unsigned char)*string)) string++;
+ }
+ if (*string == 'e') {
+ string++;
+ ret->expandfactor = atof(string);
}
return ret;
ret[1].sval = dupstr(buf);
ret[1].ival = 0;
- ret[2].name = NULL;
- ret[2].type = C_END;
- ret[2].sval = NULL;
+ ret[2].name = "Expansion factor";
+ ret[2].type = C_STRING;
+ sprintf(buf, "%g", params->expandfactor);
+ ret[2].sval = dupstr(buf);
ret[2].ival = 0;
+ ret[3].name = NULL;
+ ret[3].type = C_END;
+ ret[3].sval = NULL;
+ ret[3].ival = 0;
+
return ret;
}
ret->w = atoi(cfg[0].sval);
ret->h = atoi(cfg[1].sval);
+ ret->expandfactor = atof(cfg[2].sval);
return ret;
}
return "Width and height must both be greater than zero";
if (params->w < 2 && params->h < 2)
return "Grid area must be greater than one";
+ if (params->expandfactor < 0.0F)
+ return "Expansion factor may not be negative";
return NULL;
}
}
#ifdef GENERATION_DIAGNOSTICS
-static void display_grid(game_params *params, int *grid, int *numbers)
+static void display_grid(game_params *params, int *grid, int *numbers, int all)
{
unsigned char *egrid = snewn((params->w*2+3) * (params->h*2+3),
unsigned char);
- memset(egrid, 0, (params->w*2+3) * (params->h*2+3));
int x, y;
int r = (params->w*2+3);
+ memset(egrid, 0, (params->w*2+3) * (params->h*2+3));
+
for (x = 0; x < params->w; x++)
for (y = 0; y < params->h; y++) {
int i = index(params, grid, x, y);
for (y = 1; y < 2*params->h+2; y++) {
for (x = 1; x < 2*params->w+2; x++) {
if (!((y|x)&1)) {
- int k = index(params, numbers, x/2-1, y/2-1);
- if (k) printf("%2d", k); else printf(" ");
+ int k = numbers ? index(params, numbers, x/2-1, y/2-1) : 0;
+ if (k || (all && numbers)) printf("%2d", k); else printf(" ");
} else if (!((y&x)&1)) {
int v = egrid[y*r+x];
if ((y&1) && v) v = '-';
{
int *grid, *numbers;
struct rectlist *list;
- int x, y, run, i;
+ int x, y, y2, y2last, yx, run, i;
char *seed, *p;
+ game_params params2real, *params2 = ¶ms2real;
- grid = snewn(params->w * params->h, int);
- numbers = snewn(params->w * params->h, int);
+ /*
+ * Set up the smaller width and height which we will use to
+ * generate the base grid.
+ */
+ params2->w = params->w / (1.0F + params->expandfactor);
+ if (params2->w < 1) params2->w = 1;
+ params2->h = params->h * (1.0F + params->expandfactor);
+ if (params2->h < 1) params2->h = 1;
- for (y = 0; y < params->h; y++)
- for (x = 0; x < params->w; x++) {
- index(params, grid, x, y) = -1;
- index(params, numbers, x, y) = 0;
+ grid = snewn(params2->w * params2->h, int);
+
+ for (y = 0; y < params2->h; y++)
+ for (x = 0; x < params2->w; x++) {
+ index(params2, grid, x, y) = -1;
}
- list = get_rectlist(params, grid);
+ list = get_rectlist(params2, grid);
assert(list != NULL);
/*
/*
* Place it.
*/
- place_rect(params, grid, r);
+ place_rect(params2, grid, r);
/*
* Winnow the list by removing any rectangles which
* +--+-----+ in this fashion; so instead we can simply
* replace the whole section with a single 3x3.
*/
- for (x = 0; x < params->w; x++) {
- for (y = 0; y < params->h; y++) {
- if (index(params, grid, x, y) < 0) {
+ for (x = 0; x < params2->w; x++) {
+ for (y = 0; y < params2->h; y++) {
+ if (index(params2, grid, x, y) < 0) {
int dirs[4], ndirs;
#ifdef GENERATION_DIAGNOSTICS
- display_grid(params, grid, numbers);
+ display_grid(params2, grid, NULL, FALSE);
printf("singleton at %d,%d\n", x, y);
#endif
* create?
*/
ndirs = 0;
- if (x < params->w-1) {
- struct rect r = find_rect(params, grid, x+1, y);
+ if (x < params2->w-1) {
+ struct rect r = find_rect(params2, grid, x+1, y);
if ((r.w * r.h > 2 && (r.y==y || r.y+r.h-1==y)) || r.h==1)
dirs[ndirs++] = 1; /* right */
}
if (y > 0) {
- struct rect r = find_rect(params, grid, x, y-1);
+ struct rect r = find_rect(params2, grid, x, y-1);
if ((r.w * r.h > 2 && (r.x==x || r.x+r.w-1==x)) || r.w==1)
dirs[ndirs++] = 2; /* up */
}
if (x > 0) {
- struct rect r = find_rect(params, grid, x-1, y);
+ struct rect r = find_rect(params2, grid, x-1, y);
if ((r.w * r.h > 2 && (r.y==y || r.y+r.h-1==y)) || r.h==1)
dirs[ndirs++] = 4; /* left */
}
- if (y < params->h-1) {
- struct rect r = find_rect(params, grid, x, y+1);
+ if (y < params2->h-1) {
+ struct rect r = find_rect(params2, grid, x, y+1);
if ((r.w * r.h > 2 && (r.x==x || r.x+r.w-1==x)) || r.w==1)
dirs[ndirs++] = 8; /* down */
}
switch (dir) {
case 1: /* right */
- assert(x < params->w+1);
+ assert(x < params2->w+1);
#ifdef GENERATION_DIAGNOSTICS
printf("extending right\n");
#endif
- r1 = find_rect(params, grid, x+1, y);
+ r1 = find_rect(params2, grid, x+1, y);
r2.x = x;
r2.y = y;
r2.w = 1 + r1.w;
#ifdef GENERATION_DIAGNOSTICS
printf("extending up\n");
#endif
- r1 = find_rect(params, grid, x, y-1);
+ r1 = find_rect(params2, grid, x, y-1);
r2.x = x;
r2.y = r1.y;
r2.w = 1;
#ifdef GENERATION_DIAGNOSTICS
printf("extending left\n");
#endif
- r1 = find_rect(params, grid, x-1, y);
+ r1 = find_rect(params2, grid, x-1, y);
r2.x = r1.x;
r2.y = y;
r2.w = 1 + r1.w;
r1.h--;
break;
case 8: /* down */
- assert(y < params->h+1);
+ assert(y < params2->h+1);
#ifdef GENERATION_DIAGNOSTICS
printf("extending down\n");
#endif
- r1 = find_rect(params, grid, x, y+1);
+ r1 = find_rect(params2, grid, x, y+1);
r2.x = x;
r2.y = y;
r2.w = 1;
break;
}
if (r1.h > 0 && r1.w > 0)
- place_rect(params, grid, r1);
- place_rect(params, grid, r2);
+ place_rect(params2, grid, r1);
+ place_rect(params2, grid, r2);
} else {
#ifndef NDEBUG
/*
*/
{
int xx, yy;
- assert(x > 0 && x < params->w-1);
- assert(y > 0 && y < params->h-1);
+ assert(x > 0 && x < params2->w-1);
+ assert(y > 0 && y < params2->h-1);
for (xx = x-1; xx <= x+1; xx++)
for (yy = y-1; yy <= y+1; yy++) {
- struct rect r = find_rect(params,grid,xx,yy);
+ struct rect r = find_rect(params2,grid,xx,yy);
assert(r.x >= x-1);
assert(r.y >= y-1);
assert(r.x+r.w-1 <= x+1);
r.x = x-1;
r.y = y-1;
r.w = r.h = 3;
- place_rect(params, grid, r);
+ place_rect(params2, grid, r);
}
}
}
}
/*
+ * We have now constructed a grid of the size specified in
+ * params2. Now we extend it into a grid of the size specified
+ * in params. We do this in two passes: we extend it vertically
+ * until it's the right height, then we transpose it, then
+ * extend it vertically again (getting it effectively the right
+ * width), then finally transpose again.
+ */
+ for (i = 0; i < 2; i++) {
+ int *grid2, *expand, *where;
+ game_params params3real, *params3 = ¶ms3real;
+
+#ifdef GENERATION_DIAGNOSTICS
+ printf("before expansion:\n");
+ display_grid(params2, grid, NULL, TRUE);
+#endif
+
+ /*
+ * Set up the new grid.
+ */
+ grid2 = snewn(params2->w * params->h, int);
+ expand = snewn(params2->h-1, int);
+ where = snewn(params2->w, int);
+ params3->w = params2->w;
+ params3->h = params->h;
+
+ /*
+ * Decide which horizontal edges are going to get expanded,
+ * and by how much.
+ */
+ for (y = 0; y < params2->h-1; y++)
+ expand[y] = 0;
+ for (y = params2->h; y < params->h; y++) {
+ x = random_upto(rs, params2->h-1);
+ expand[x]++;
+ }
+
+#ifdef GENERATION_DIAGNOSTICS
+ printf("expand[] = {");
+ for (y = 0; y < params2->h-1; y++)
+ printf(" %d", expand[y]);
+ printf(" }\n");
+#endif
+
+ /*
+ * Perform the expansion. The way this works is that we
+ * alternately:
+ *
+ * - copy a row from grid into grid2
+ *
+ * - invent some number of additional rows in grid2 where
+ * there was previously only a horizontal line between
+ * rows in grid, and make random decisions about where
+ * among these to place each rectangle edge that ran
+ * along this line.
+ */
+ for (y = y2 = y2last = 0; y < params2->h; y++) {
+ /*
+ * Copy a single line from row y of grid into row y2 of
+ * grid2.
+ */
+ for (x = 0; x < params2->w; x++) {
+ int val = index(params2, grid, x, y);
+ if (val / params2->w == y && /* rect starts on this line */
+ (y2 == 0 || /* we're at the very top, or... */
+ index(params3, grid2, x, y2-1) / params3->w < y2last
+ /* this rect isn't already started */))
+ index(params3, grid2, x, y2) =
+ INDEX(params3, val % params2->w, y2);
+ else
+ index(params3, grid2, x, y2) =
+ index(params3, grid2, x, y2-1);
+ }
+
+ /*
+ * If that was the last line, terminate the loop early.
+ */
+ if (++y2 == params3->h)
+ break;
+
+ y2last = y2;
+
+ /*
+ * Invent some number of additional lines. First walk
+ * along this line working out where to put all the
+ * edges that coincide with it.
+ */
+ yx = -1;
+ for (x = 0; x < params2->w; x++) {
+ if (index(params2, grid, x, y) !=
+ index(params2, grid, x, y+1)) {
+ /*
+ * This is a horizontal edge, so it needs
+ * placing.
+ */
+ if (x == 0 ||
+ (index(params2, grid, x-1, y) !=
+ index(params2, grid, x, y) &&
+ index(params2, grid, x-1, y+1) !=
+ index(params2, grid, x, y+1))) {
+ /*
+ * Here we have the chance to make a new
+ * decision.
+ */
+ yx = random_upto(rs, expand[y]+1);
+ } else {
+ /*
+ * Here we just reuse the previous value of
+ * yx.
+ */
+ }
+ } else
+ yx = -1;
+ where[x] = yx;
+ }
+
+ for (yx = 0; yx < expand[y]; yx++) {
+ /*
+ * Invent a single row. For each square in the row,
+ * we copy the grid entry from the square above it,
+ * unless we're starting the new rectangle here.
+ */
+ for (x = 0; x < params2->w; x++) {
+ if (yx == where[x]) {
+ int val = index(params2, grid, x, y+1);
+ val %= params2->w;
+ val = INDEX(params3, val, y2);
+ index(params3, grid2, x, y2) = val;
+ } else
+ index(params3, grid2, x, y2) =
+ index(params3, grid2, x, y2-1);
+ }
+
+ y2++;
+ }
+ }
+
+ sfree(expand);
+ sfree(where);
+
+#ifdef GENERATION_DIAGNOSTICS
+ printf("after expansion:\n");
+ display_grid(params3, grid2, NULL, TRUE);
+#endif
+ /*
+ * Transpose.
+ */
+ params2->w = params3->h;
+ params2->h = params3->w;
+ sfree(grid);
+ grid = snewn(params2->w * params2->h, int);
+ for (x = 0; x < params2->w; x++)
+ for (y = 0; y < params2->h; y++) {
+ int idx1 = INDEX(params2, x, y);
+ int idx2 = INDEX(params3, y, x);
+ int tmp;
+
+ tmp = grid2[idx2];
+ tmp = (tmp % params3->w) * params2->w + (tmp / params3->w);
+ grid[idx1] = tmp;
+ }
+
+ sfree(grid2);
+
+ {
+ int tmp;
+ tmp = params->w;
+ params->w = params->h;
+ params->h = tmp;
+ }
+
+#ifdef GENERATION_DIAGNOSTICS
+ printf("after transposition:\n");
+ display_grid(params2, grid, NULL, TRUE);
+#endif
+ }
+
+ /*
* Place numbers.
*/
+ numbers = snewn(params->w * params->h, int);
+
+ for (y = 0; y < params->h; y++)
+ for (x = 0; x < params->w; x++) {
+ index(params, numbers, x, y) = 0;
+ }
+
for (x = 0; x < params->w; x++) {
for (y = 0; y < params->h; y++) {
int idx = INDEX(params, x, y);
}
#ifdef GENERATION_DIAGNOSTICS
- display_grid(params, grid, numbers);
+ display_grid(params, grid, numbers, FALSE);
#endif
seed = snewn(11 * params->w * params->h, char);
~mdw / sgt / puzzles / blobdiff