#include <stdlib.h>
#include <string.h>
#include <assert.h>
+#include <ctype.h>
#include <math.h>
#include "puzzles.h"
-const char *const game_name = "Fifteen";
-
#define TILE_SIZE 48
#define BORDER (TILE_SIZE / 2)
#define HIGHLIGHT_WIDTH (TILE_SIZE / 20)
#define COORD(x) ( (x) * TILE_SIZE + BORDER )
#define FROMCOORD(x) ( ((x) - BORDER + TILE_SIZE) / TILE_SIZE - 1 )
-#define ANIM_TIME 0.1F
-#define FLASH_FRAME 0.1F
+#define ANIM_TIME 0.13F
+#define FLASH_FRAME 0.13F
#define X(state, i) ( (i) % (state)->w )
#define Y(state, i) ( (i) / (state)->w )
int *tiles;
int gap_pos;
int completed;
+ int movecount;
};
-game_params *default_params(void)
+static game_params *default_params(void)
{
game_params *ret = snew(game_params);
return ret;
}
-int game_fetch_preset(int i, char **name, game_params **params)
+static int game_fetch_preset(int i, char **name, game_params **params)
{
return FALSE;
}
-void free_params(game_params *params)
+static void free_params(game_params *params)
{
sfree(params);
}
-game_params *dup_params(game_params *params)
+static game_params *dup_params(game_params *params)
{
game_params *ret = snew(game_params);
*ret = *params; /* structure copy */
return ret;
}
-int perm_parity(int *perm, int n)
+static game_params *decode_params(char const *string)
+{
+ game_params *ret = default_params();
+
+ ret->w = ret->h = atoi(string);
+ while (*string && isdigit(*string)) string++;
+ if (*string == 'x') {
+ string++;
+ ret->h = atoi(string);
+ }
+
+ return ret;
+}
+
+static char *encode_params(game_params *params)
+{
+ char data[256];
+
+ sprintf(data, "%dx%d", params->w, params->h);
+
+ return dupstr(data);
+}
+
+static config_item *game_configure(game_params *params)
+{
+ config_item *ret;
+ char buf[80];
+
+ ret = snewn(3, config_item);
+
+ ret[0].name = "Width";
+ ret[0].type = C_STRING;
+ sprintf(buf, "%d", params->w);
+ ret[0].sval = dupstr(buf);
+ ret[0].ival = 0;
+
+ ret[1].name = "Height";
+ ret[1].type = C_STRING;
+ sprintf(buf, "%d", params->h);
+ ret[1].sval = dupstr(buf);
+ ret[1].ival = 0;
+
+ ret[2].name = NULL;
+ ret[2].type = C_END;
+ ret[2].sval = NULL;
+ ret[2].ival = 0;
+
+ return ret;
+}
+
+static game_params *custom_params(config_item *cfg)
+{
+ game_params *ret = snew(game_params);
+
+ ret->w = atoi(cfg[0].sval);
+ ret->h = atoi(cfg[1].sval);
+
+ return ret;
+}
+
+static char *validate_params(game_params *params)
+{
+ if (params->w < 2 && params->h < 2)
+ return "Width and height must both be at least two";
+
+ return NULL;
+}
+
+static int perm_parity(int *perm, int n)
{
int i, j, ret;
return ret;
}
-char *new_game_seed(game_params *params)
+static char *new_game_seed(game_params *params, random_state *rs)
{
int gap, n, i, x;
int x1, x2, p1, p2, parity;
used[i] = FALSE;
}
- gap = rand_upto(n);
+ gap = random_upto(rs, n);
tiles[gap] = 0;
used[0] = TRUE;
* Place everything else except the last two tiles.
*/
for (x = 0, i = n-1; i > 2; i--) {
- int k = rand_upto(i);
+ int k = random_upto(rs, i);
int j;
for (j = 0; j < n; j++)
* Determine the required parity of the overall permutation.
* This is the XOR of:
*
- * - The chessboard parity ((x^y)&1) of the gap square. The
- * bottom right, and therefore also the top left, count as
- * even.
+ * - The chessboard parity ((x^y)&1) of the gap square. The
+ * bottom right counts as even.
*
* - The parity of n. (The target permutation is 1,...,n-1,0
* rather than 0,...,n-1; this is a cyclic permutation of
* the starting point and hence is odd iff n is even.)
*/
- parity = (X(params, gap) ^ Y(params, gap) ^ (n+1)) & 1;
+ parity = ((X(params, gap) - (params->w-1)) ^
+ (Y(params, gap) - (params->h-1)) ^
+ (n+1)) & 1;
/*
* Try the last two tiles one way round. If that fails, swap
return ret;
}
-game_state *new_game(game_params *params, char *seed)
+static char *validate_seed(game_params *params, char *seed)
+{
+ char *p, *err;
+ int i, area;
+ int *used;
+
+ area = params->w * params->h;
+ p = seed;
+ err = NULL;
+
+ used = snewn(area, int);
+ for (i = 0; i < area; i++)
+ used[i] = FALSE;
+
+ for (i = 0; i < area; i++) {
+ char *q = p;
+ int n;
+
+ if (*p < '0' || *p > '9') {
+ err = "Not enough numbers in string";
+ goto leave;
+ }
+ while (*p >= '0' && *p <= '9')
+ p++;
+ if (i < area-1 && *p != ',') {
+ err = "Expected comma after number";
+ goto leave;
+ }
+ else if (i == area-1 && *p) {
+ err = "Excess junk at end of string";
+ goto leave;
+ }
+ n = atoi(q);
+ if (n < 0 || n >= area) {
+ err = "Number out of range";
+ goto leave;
+ }
+ if (used[n]) {
+ err = "Number used twice";
+ goto leave;
+ }
+ used[n] = TRUE;
+
+ if (*p) p++; /* eat comma */
+ }
+
+ leave:
+ sfree(used);
+ return err;
+}
+
+static game_state *new_game(game_params *params, char *seed)
{
game_state *state = snew(game_state);
int i;
assert(!*p);
assert(state->tiles[state->gap_pos] == 0);
- state->completed = FALSE;
+ state->completed = state->movecount = 0;
return state;
}
-game_state *dup_game(game_state *state)
+static game_state *dup_game(game_state *state)
{
game_state *ret = snew(game_state);
memcpy(ret->tiles, state->tiles, state->w * state->h * sizeof(int));
ret->gap_pos = state->gap_pos;
ret->completed = state->completed;
+ ret->movecount = state->movecount;
return ret;
}
-void free_game(game_state *state)
+static void free_game(game_state *state)
{
sfree(state);
}
-game_state *make_move(game_state *from, int x, int y, int button)
+static game_ui *new_ui(game_state *state)
+{
+ return NULL;
+}
+
+static void free_ui(game_ui *ui)
+{
+}
+
+static game_state *make_move(game_state *from, game_ui *ui,
+ int x, int y, int button)
{
int gx, gy, dx, dy, ux, uy, up, p;
game_state *ret;
for (p = from->gap_pos; p != ret->gap_pos; p += up) {
assert(p >= 0 && p < from->n);
ret->tiles[p] = from->tiles[p + up];
+ ret->movecount++;
}
/*
* See if the game has been completed.
*/
if (!ret->completed) {
- ret->completed = TRUE;
+ ret->completed = ret->movecount;
for (p = 0; p < ret->n; p++)
if (ret->tiles[p] != (p < ret->n-1 ? p+1 : 0))
- ret->completed = FALSE;
+ ret->completed = 0;
}
return ret;
int *tiles;
};
-void game_size(game_params *params, int *x, int *y)
+static void game_size(game_params *params, int *x, int *y)
{
*x = TILE_SIZE * params->w + 2 * BORDER;
*y = TILE_SIZE * params->h + 2 * BORDER;
}
-float *game_colours(frontend *fe, game_state *state, int *ncolours)
+static float *game_colours(frontend *fe, game_state *state, int *ncolours)
{
float *ret = snewn(3 * NCOLOURS, float);
int i;
return ret;
}
-game_drawstate *game_new_drawstate(game_state *state)
+static game_drawstate *game_new_drawstate(game_state *state)
{
struct game_drawstate *ds = snew(struct game_drawstate);
int i;
return ds;
}
-void game_free_drawstate(game_drawstate *ds)
+static void game_free_drawstate(game_drawstate *ds)
{
sfree(ds->tiles);
sfree(ds);
draw_update(fe, x, y, TILE_SIZE, TILE_SIZE);
}
-void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
- game_state *state, float animtime, float flashtime)
+static void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
+ game_state *state, int dir, game_ui *ui,
+ float animtime, float flashtime)
{
int i, pass, bgcolour;
}
}
ds->bgcolour = bgcolour;
+
+ /*
+ * Update the status bar.
+ */
+ {
+ char statusbuf[256];
+
+ /*
+ * Don't show the new status until we're also showing the
+ * new _state_ - after the game animation is complete.
+ */
+ if (oldstate)
+ state = oldstate;
+
+ sprintf(statusbuf, "%sMoves: %d",
+ (state->completed ? "COMPLETED! " : ""),
+ (state->completed ? state->completed : state->movecount));
+
+ status_bar(fe, statusbuf);
+ }
}
-float game_anim_length(game_state *oldstate, game_state *newstate)
+static float game_anim_length(game_state *oldstate,
+ game_state *newstate, int dir)
{
return ANIM_TIME;
}
-float game_flash_length(game_state *oldstate, game_state *newstate)
+static float game_flash_length(game_state *oldstate,
+ game_state *newstate, int dir)
{
if (!oldstate->completed && newstate->completed)
return 2 * FLASH_FRAME;
else
return 0.0F;
}
+
+static int game_wants_statusbar(void)
+{
+ return TRUE;
+}
+
+#ifdef COMBINED
+#define thegame fifteen
+#endif
+
+const struct game thegame = {
+ "Fifteen", "games.fifteen",
+ default_params,
+ game_fetch_preset,
+ decode_params,
+ encode_params,
+ free_params,
+ dup_params,
+ TRUE, game_configure, custom_params,
+ validate_params,
+ new_game_seed,
+ validate_seed,
+ new_game,
+ dup_game,
+ free_game,
+ new_ui,
+ free_ui,
+ make_move,
+ game_size,
+ game_colours,
+ game_new_drawstate,
+ game_free_drawstate,
+ game_redraw,
+ game_anim_length,
+ game_flash_length,
+ game_wants_statusbar,
+};
~mdw / sgt / puzzles / blobdiff