Infrastructure change which I've been thinking about for a while:

[sgt/puzzles] / fifteen.c

diff --git a/fifteen.c b/fifteen.c
index bf2cdf1..d8ba3b0 100644 (file)
--- a/fifteen.c
+++ b/fifteen.c
@@ -11,7 +11,8 @@
 
 #include "puzzles.h"
 
-#define TILE_SIZE 48
+#define PREFERRED_TILE_SIZE 48
+#define TILE_SIZE (ds->tilesize)
 #define BORDER    (TILE_SIZE / 2)
 #define HIGHLIGHT_WIDTH (TILE_SIZE / 20)
 #define COORD(x)  ( (x) * TILE_SIZE + BORDER )
@@ -378,8 +379,8 @@ static void free_game(game_state *state)
     sfree(state);
 }
 
-static game_state *solve_game(game_state *state, game_aux_info *aux,
-                             char **error)
+static game_state *solve_game(game_state *state, game_state *currstate,
+                             game_aux_info *aux, char **error)
 {
     game_state *ret = dup_game(state);
     int i;
@@ -451,6 +452,18 @@ static void free_ui(game_ui *ui)
 {
 }
 
+static void game_changed_state(game_ui *ui, game_state *oldstate,
+                               game_state *newstate)
+{
+}
+
+struct game_drawstate {
+    int started;
+    int w, h, bgcolour;
+    int *tiles;
+    int tilesize;
+};
+
 static game_state *make_move(game_state *from, game_ui *ui, game_drawstate *ds,
                              int x, int y, int button) {
     int gx, gy, dx, dy, ux, uy, up, p;
@@ -522,14 +535,23 @@ static game_state *make_move(game_state *from, game_ui *ui, game_drawstate *ds,
  * Drawing routines.
  */
 
-struct game_drawstate {
-    int started;
-    int w, h, bgcolour;
-    int *tiles;
-};
-
-static void game_size(game_params *params, int *x, int *y)
+static void game_size(game_params *params, game_drawstate *ds,
+                      int *x, int *y, int expand)
 {
+    int tsx, tsy, ts;
+    /*
+     * Each window dimension equals the tile size times one more
+     * than the grid dimension (the border is half the width of the
+     * tiles).
+     */
+    tsx = *x / (params->w + 1);
+    tsy = *y / (params->h + 1);
+    ts = min(tsx, tsy);
+    if (expand)
+        ds->tilesize = ts;
+    else
+        ds->tilesize = min(ts, PREFERRED_TILE_SIZE);
+
     *x = TILE_SIZE * params->w + 2 * BORDER;
     *y = TILE_SIZE * params->h + 2 * BORDER;
 }
@@ -575,6 +597,7 @@ static game_drawstate *game_new_drawstate(game_state *state)
     ds->h = state->h;
     ds->bgcolour = COL_BACKGROUND;
     ds->tiles = snewn(ds->w*ds->h, int);
+    ds->tilesize = 0;                  /* haven't decided yet */
     for (i = 0; i < ds->w*ds->h; i++)
         ds->tiles[i] = -1;
 
@@ -587,8 +610,8 @@ static void game_free_drawstate(game_drawstate *ds)
     sfree(ds);
 }
 
-static void draw_tile(frontend *fe, game_state *state, int x, int y,
-                      int tile, int flash_colour)
+static void draw_tile(frontend *fe, game_drawstate *ds, game_state *state,
+                      int x, int y, int tile, int flash_colour)
 {
     if (tile == 0) {
         draw_rect(fe, x, y, TILE_SIZE, TILE_SIZE,
@@ -749,7 +772,7 @@ static void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
                     y = COORD(Y(state, i));
                 }
 
-                draw_tile(fe, state, x, y, t, bgcolour);
+                draw_tile(fe, ds, state, x, y, t, bgcolour);
             }
             ds->tiles[i] = t0;
         }
@@ -835,6 +858,7 @@ const struct game thegame = {
     TRUE, game_text_format,
     new_ui,
     free_ui,
+    game_changed_state,
     make_move,
     game_size,
     game_colours,