X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/puzzles/blobdiff_plain/edf63745d9f5a4432e05eb6cb27b9c69b7caf237..f1359c5e1495fa1a5dddd60cdf8046ac7c0f5462:/solo.c

diff --git a/solo.c b/solo.c
index 97acf76..d564ad2 100644
--- a/solo.c
+++ b/solo.c
@@ -107,8 +107,9 @@ int solver_show_working;
 typedef unsigned char digit;
 #define ORDER_MAX 255
 
-#define TILE_SIZE 32
-#define BORDER 18
+#define PREFERRED_TILE_SIZE 32
+#define TILE_SIZE (ds->tilesize)
+#define BORDER (TILE_SIZE / 2)
 
 #define FLASH_TIME 0.4F
 
@@ -1853,6 +1854,33 @@ static void free_ui(game_ui *ui)
     sfree(ui);
 }
 
+static void game_changed_state(game_ui *ui, game_state *oldstate,
+                               game_state *newstate)
+{
+    int c = newstate->c, r = newstate->r, cr = c*r;
+    /*
+     * We prevent pencil-mode highlighting of a filled square. So
+     * if the user has just filled in a square which we had a
+     * pencil-mode highlight in (by Undo, or by Redo, or by Solve),
+     * then we cancel the highlight.
+     */
+    if (ui->hx >= 0 && ui->hy >= 0 && ui->hpencil &&
+        newstate->grid[ui->hy * cr + ui->hx] != 0) {
+        ui->hx = ui->hy = -1;
+    }
+}
+
+struct game_drawstate {
+    int started;
+    int c, r, cr;
+    int tilesize;
+    digit *grid;
+    unsigned char *pencil;
+    unsigned char *hl;
+    /* This is scratch space used within a single call to game_redraw. */
+    int *entered_items;
+};
+
 static game_state *make_move(game_state *from, game_ui *ui, game_drawstate *ds,
                              int x, int y, int button)
 {
@@ -1956,25 +1984,23 @@ static game_state *make_move(game_state *from, game_ui *ui, game_drawstate *ds,
  * Drawing routines.
  */
 
-struct game_drawstate {
-    int started;
-    int c, r, cr;
-    digit *grid;
-    unsigned char *pencil;
-    unsigned char *hl;
-    /* This is scratch space used within a single call to game_redraw. */
-    int *entered_items;
-};
-
-#define XSIZE(cr) ((cr) * TILE_SIZE + 2*BORDER + 1)
-#define YSIZE(cr) ((cr) * TILE_SIZE + 2*BORDER + 1)
+#define SIZE(cr) ((cr) * TILE_SIZE + 2*BORDER + 1)
+#define GETTILESIZE(cr, w) ( (w-1) / (cr+1) )
 
-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 c = params->c, r = params->r, cr = c*r;
+    int ts;
+
+    ts = min(GETTILESIZE(cr, *x), GETTILESIZE(cr, *y));
+    if (expand)
+        ds->tilesize = ts;
+    else
+        ds->tilesize = min(ts, PREFERRED_TILE_SIZE);
 
-    *x = XSIZE(cr);
-    *y = YSIZE(cr);
+    *x = SIZE(cr);
+    *y = SIZE(cr);
 }
 
 static float *game_colours(frontend *fe, game_state *state, int *ncolours)
@@ -2027,6 +2053,7 @@ static game_drawstate *game_new_drawstate(game_state *state)
     ds->hl = snewn(cr*cr, unsigned char);
     memset(ds->hl, 0, cr*cr);
     ds->entered_items = snewn(cr*cr, int);
+    ds->tilesize = 0;                  /* not decided yet */
     return ds;
 }
 
@@ -2158,7 +2185,7 @@ static void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
 	 * all games should start by drawing a big
 	 * background-colour rectangle covering the whole window.
 	 */
-	draw_rect(fe, 0, 0, XSIZE(cr), YSIZE(cr), COL_BACKGROUND);
+	draw_rect(fe, 0, 0, SIZE(cr), SIZE(cr), COL_BACKGROUND);
 
 	/*
 	 * Draw the grid.
@@ -2211,9 +2238,9 @@ static void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
 
 	    /* Mark obvious errors (ie, numbers which occur more than once
 	     * in a single row, column, or box). */
-	    if ((ds->entered_items[x*cr+d-1] & 2) ||
-		(ds->entered_items[y*cr+d-1] & 8) ||
-		(ds->entered_items[((x/r)+(y/c)*c)*cr+d-1] & 32))
+	    if (d && ((ds->entered_items[x*cr+d-1] & 2) ||
+		      (ds->entered_items[y*cr+d-1] & 8) ||
+		      (ds->entered_items[((x/r)+(y/c)*c)*cr+d-1] & 32)))
 		highlight |= 16;
 
 	    draw_number(fe, ds, state, x, y, highlight);
@@ -2224,7 +2251,7 @@ static void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
      * Update the _entire_ grid if necessary.
      */
     if (!ds->started) {
-	draw_update(fe, 0, 0, XSIZE(cr), YSIZE(cr));
+	draw_update(fe, 0, 0, SIZE(cr), SIZE(cr));
 	ds->started = TRUE;
     }
 }
@@ -2278,6 +2305,7 @@ const struct game thegame = {
     TRUE, game_text_format,
     new_ui,
     free_ui,
+    game_changed_state,
     make_move,
     game_size,
     game_colours,