Stop the analysis pass in Loopy's redraw routine from being
[sgt/puzzles] / netslide.c
index 1962d92..8d18652 100644 (file)
@@ -84,7 +84,7 @@ struct game_params {
 
 struct game_state {
     int width, height, cx, cy, wrapping, completed;
-    int used_solve, just_used_solve;
+    int used_solve;
     int move_count, movetarget;
 
     /* position (row or col number, starting at 0) of last move. */
@@ -159,15 +159,15 @@ static game_params *default_params(void)
 
 static const struct { int x, y, wrap, bprob; const char* desc; }
 netslide_presets[] = {
-    {3, 3, FALSE, 1.0, " easy"},
-    {3, 3, FALSE, 0.0, " medium"},
-    {3, 3, TRUE,  0.0, " hard"},
-    {4, 4, FALSE, 1.0, " easy"},
-    {4, 4, FALSE, 0.0, " medium"},
-    {4, 4, TRUE,  0.0, " hard"},
-    {5, 5, FALSE, 1.0, " easy"},
-    {5, 5, FALSE, 0.0, " medium"},
-    {5, 5, TRUE,  0.0, " hard"},
+    {3, 3, FALSE, 1, " easy"},
+    {3, 3, FALSE, 0, " medium"},
+    {3, 3, TRUE,  0, " hard"},
+    {4, 4, FALSE, 1, " easy"},
+    {4, 4, FALSE, 0, " medium"},
+    {4, 4, TRUE,  0, " hard"},
+    {5, 5, FALSE, 1, " easy"},
+    {5, 5, FALSE, 0, " medium"},
+    {5, 5, TRUE,  0, " hard"},
 };
 
 static int game_fetch_preset(int i, char **name, game_params **params)
@@ -182,7 +182,7 @@ static int game_fetch_preset(int i, char **name, game_params **params)
     ret->width = netslide_presets[i].x;
     ret->height = netslide_presets[i].y;
     ret->wrapping = netslide_presets[i].wrap;
-    ret->barrier_probability = netslide_presets[i].bprob;
+    ret->barrier_probability = (float)netslide_presets[i].bprob;
     ret->movetarget = 0;
 
     sprintf(str, "%dx%d%s", ret->width, ret->height, netslide_presets[i].desc);
@@ -213,16 +213,16 @@ static void decode_params(game_params *ret, char const *string)
     ret->movetarget = 0;
 
     ret->width = atoi(p);
-    while (*p && isdigit(*p)) p++;
+    while (*p && isdigit((unsigned char)*p)) p++;
     if (*p == 'x') {
         p++;
         ret->height = atoi(p);
-        while (*p && isdigit(*p)) p++;
+        while (*p && isdigit((unsigned char)*p)) p++;
         if ( (ret->wrapping = (*p == 'w')) != 0 )
             p++;
         if (*p == 'b') {
-            ret->barrier_probability = atof(++p);
-            while (*p && (isdigit(*p) || *p == '.')) p++;
+            ret->barrier_probability = (float)atof(++p);
+            while (*p && (isdigit((unsigned char)*p) || *p == '.')) p++;
         }
         if (*p == 'm') {
             ret->movetarget = atoi(++p);
@@ -726,7 +726,7 @@ static char *validate_desc(game_params *params, char *desc)
  * Construct an initial game state, given a description and parameters.
  */
 
-static game_state *new_game(midend_data *me, game_params *params, char *desc)
+static game_state *new_game(midend *me, game_params *params, char *desc)
 {
     game_state *state;
     int w, h, x, y;
@@ -745,7 +745,7 @@ static game_state *new_game(midend_data *me, game_params *params, char *desc)
     state->wrapping = params->wrapping;
     state->movetarget = params->movetarget;
     state->completed = 0;
-    state->used_solve = state->just_used_solve = FALSE;
+    state->used_solve = FALSE;
     state->move_count = 0;
     state->last_move_row = -1;
     state->last_move_col = -1;
@@ -865,7 +865,6 @@ static game_state *dup_game(game_state *state)
     ret->movetarget = state->movetarget;
     ret->completed = state->completed;
     ret->used_solve = state->used_solve;
-    ret->just_used_solve = state->just_used_solve;
     ret->move_count = state->move_count;
     ret->last_move_row = state->last_move_row;
     ret->last_move_col = state->last_move_col;
@@ -896,6 +895,11 @@ static char *solve_game(game_state *state, game_state *currstate,
     return dupstr(aux);
 }
 
+static int game_can_format_as_text_now(game_params *params)
+{
+    return TRUE;
+}
+
 static char *game_text_format(game_state *state)
 {
     return NULL;
@@ -975,8 +979,8 @@ struct game_ui {
 static game_ui *new_ui(game_state *state)
 {
     game_ui *ui = snew(game_ui);
-    ui->cur_x = state->width / 2;
-    ui->cur_y = state->height / 2;
+    ui->cur_x = 0;
+    ui->cur_y = -1;
     ui->cur_visible = FALSE;
 
     return ui;
@@ -1048,29 +1052,55 @@ struct game_drawstate {
     int width, height;
     int tilesize;
     unsigned char *visible;
+    int cur_x, cur_y;
 };
 
 static char *interpret_move(game_state *state, game_ui *ui,
-                           game_drawstate *ds, int x, int y, int button)
+                           const game_drawstate *ds, int x, int y, int button)
 {
     int cx, cy;
-    int n, dx, dy;
+    int dx, dy;
     char buf[80];
 
     button &= ~MOD_MASK;
 
-    if (button != LEFT_BUTTON && button != RIGHT_BUTTON)
-        return NULL;
+    if (IS_CURSOR_MOVE(button)) {
+        int cpos, diff = 0;
+        cpos = c2pos(state->width, state->height, ui->cur_x, ui->cur_y);
+        diff = c2diff(state->width, state->height, ui->cur_x, ui->cur_y, button);
+
+        if (diff != 0) {
+            do { /* we might have to do this more than once to skip missing arrows */
+                cpos += diff;
+                pos2c(state->width, state->height, cpos, &ui->cur_x, &ui->cur_y);
+            } while (ui->cur_x == state->cx || ui->cur_y == state->cy);
+        }
 
-    cx = (x - (BORDER + WINDOW_OFFSET + TILE_BORDER) + 2*TILE_SIZE) / TILE_SIZE - 2;
-    cy = (y - (BORDER + WINDOW_OFFSET + TILE_BORDER) + 2*TILE_SIZE) / TILE_SIZE - 2;
+        ui->cur_visible = 1;
+        return "";
+    }
+
+    if (button == LEFT_BUTTON || button == RIGHT_BUTTON) {
+        cx = (x - (BORDER + WINDOW_OFFSET + TILE_BORDER) + 2*TILE_SIZE) / TILE_SIZE - 2;
+        cy = (y - (BORDER + WINDOW_OFFSET + TILE_BORDER) + 2*TILE_SIZE) / TILE_SIZE - 2;
+        ui->cur_visible = 0;
+    } else if (IS_CURSOR_SELECT(button)) {
+        if (ui->cur_visible) {
+            cx = ui->cur_x;
+            cy = ui->cur_y;
+        } else {
+            /* 'click' when cursor is invisible just makes cursor visible. */
+            ui->cur_visible = 1;
+            return "";
+        }
+    } else
+        return NULL;
 
     if (cy >= 0 && cy < state->height && cy != state->cy)
     {
         if (cx == -1) dx = +1;
         else if (cx == state->width) dx = -1;
         else return NULL;
-        n = state->width;
         dy = 0;
     }
     else if (cx >= 0 && cx < state->width && cx != state->cx)
@@ -1078,7 +1108,6 @@ static char *interpret_move(game_state *state, game_ui *ui,
         if (cy == -1) dy = +1;
         else if (cy == state->height) dy = -1;
         else return NULL;
-        n = state->height;
         dx = 0;
     }
     else
@@ -1111,7 +1140,7 @@ static game_state *execute_move(game_state *from, char *move)
               strlen(move) == from->width * from->height + 1) {
        int i;
        ret = dup_game(from);
-       ret->used_solve = ret->just_used_solve = TRUE;
+       ret->used_solve = TRUE;
        ret->completed = ret->move_count = 1;
 
        for (i = 0; i < from->width * from->height; i++) {
@@ -1133,7 +1162,6 @@ static game_state *execute_move(game_state *from, char *move)
        return NULL;                   /* can't parse move string */
 
     ret = dup_game(from);
-    ret->just_used_solve = FALSE;
 
     if (col)
        slide_col(ret, d, c);
@@ -1174,7 +1202,7 @@ static game_state *execute_move(game_state *from, char *move)
  * Routines for drawing the game position on the screen.
  */
 
-static game_drawstate *game_new_drawstate(game_state *state)
+static game_drawstate *game_new_drawstate(drawing *dr, game_state *state)
 {
     game_drawstate *ds = snew(game_drawstate);
 
@@ -1184,11 +1212,12 @@ static game_drawstate *game_new_drawstate(game_state *state)
     ds->visible = snewn(state->width * state->height, unsigned char);
     ds->tilesize = 0;                  /* not decided yet */
     memset(ds->visible, 0xFF, state->width * state->height);
+    ds->cur_x = ds->cur_y = -1;
 
     return ds;
 }
 
-static void game_free_drawstate(game_drawstate *ds)
+static void game_free_drawstate(drawing *dr, game_drawstate *ds)
 {
     sfree(ds->visible);
     sfree(ds);
@@ -1205,13 +1234,13 @@ static void game_compute_size(game_params *params, int tilesize,
     *y = BORDER * 2 + WINDOW_OFFSET * 2 + TILE_SIZE * params->height + TILE_BORDER;
 }
 
-static void game_set_size(game_drawstate *ds, game_params *params,
-                         int tilesize)
+static void game_set_size(drawing *dr, game_drawstate *ds,
+                         game_params *params, int tilesize)
 {
     ds->tilesize = tilesize;
 }
 
-static float *game_colours(frontend *fe, game_state *state, int *ncolours)
+static float *game_colours(frontend *fe, int *ncolours)
 {
     float *ret;
 
@@ -1276,17 +1305,17 @@ static float *game_colours(frontend *fe, game_state *state, int *ncolours)
     return ret;
 }
 
-static void draw_thick_line(frontend *fe, int x1, int y1, int x2, int y2,
-                            int colour)
+static void draw_filled_line(drawing *dr, int x1, int y1, int x2, int y2,
+                            int colour)
 {
-    draw_line(fe, x1-1, y1, x2-1, y2, COL_WIRE);
-    draw_line(fe, x1+1, y1, x2+1, y2, COL_WIRE);
-    draw_line(fe, x1, y1-1, x2, y2-1, COL_WIRE);
-    draw_line(fe, x1, y1+1, x2, y2+1, COL_WIRE);
-    draw_line(fe, x1, y1, x2, y2, colour);
+    draw_line(dr, x1-1, y1, x2-1, y2, COL_WIRE);
+    draw_line(dr, x1+1, y1, x2+1, y2, COL_WIRE);
+    draw_line(dr, x1, y1-1, x2, y2-1, COL_WIRE);
+    draw_line(dr, x1, y1+1, x2, y2+1, COL_WIRE);
+    draw_line(dr, x1, y1, x2, y2, colour);
 }
 
-static void draw_rect_coords(frontend *fe, int x1, int y1, int x2, int y2,
+static void draw_rect_coords(drawing *dr, int x1, int y1, int x2, int y2,
                              int colour)
 {
     int mx = (x1 < x2 ? x1 : x2);
@@ -1294,10 +1323,10 @@ static void draw_rect_coords(frontend *fe, int x1, int y1, int x2, int y2,
     int dx = (x2 + x1 - 2*mx + 1);
     int dy = (y2 + y1 - 2*my + 1);
 
-    draw_rect(fe, mx, my, dx, dy, colour);
+    draw_rect(dr, mx, my, dx, dy, colour);
 }
 
-static void draw_barrier_corner(frontend *fe, game_drawstate *ds,
+static void draw_barrier_corner(drawing *dr, game_drawstate *ds,
                                 int x, int y, int dir, int phase)
 {
     int bx = BORDER + WINDOW_OFFSET + TILE_SIZE * x;
@@ -1313,20 +1342,20 @@ static void draw_barrier_corner(frontend *fe, game_drawstate *ds,
     y1 = (dy > 0 ? TILE_SIZE+TILE_BORDER-1 : 0);
 
     if (phase == 0) {
-        draw_rect_coords(fe, bx+x1, by+y1,
+        draw_rect_coords(dr, bx+x1, by+y1,
                          bx+x1-TILE_BORDER*dx, by+y1-(TILE_BORDER-1)*dy,
                          COL_WIRE);
-        draw_rect_coords(fe, bx+x1, by+y1,
+        draw_rect_coords(dr, bx+x1, by+y1,
                          bx+x1-(TILE_BORDER-1)*dx, by+y1-TILE_BORDER*dy,
                          COL_WIRE);
     } else {
-        draw_rect_coords(fe, bx+x1, by+y1,
+        draw_rect_coords(dr, bx+x1, by+y1,
                          bx+x1-(TILE_BORDER-1)*dx, by+y1-(TILE_BORDER-1)*dy,
                          COL_BARRIER);
     }
 }
 
-static void draw_barrier(frontend *fe, game_drawstate *ds,
+static void draw_barrier(drawing *dr, game_drawstate *ds,
                          int x, int y, int dir, int phase)
 {
     int bx = BORDER + WINDOW_OFFSET + TILE_SIZE * x;
@@ -1339,17 +1368,17 @@ static void draw_barrier(frontend *fe, game_drawstate *ds,
     h = (Y(dir) ? TILE_BORDER : TILE_SIZE - TILE_BORDER);
 
     if (phase == 0) {
-        draw_rect(fe, bx+x1-X(dir), by+y1-Y(dir), w, h, COL_WIRE);
+        draw_rect(dr, bx+x1-X(dir), by+y1-Y(dir), w, h, COL_WIRE);
     } else {
-        draw_rect(fe, bx+x1, by+y1, w, h, COL_BARRIER);
+        draw_rect(dr, bx+x1, by+y1, w, h, COL_BARRIER);
     }
 }
 
-static void draw_tile(frontend *fe, game_drawstate *ds, game_state *state,
+static void draw_tile(drawing *dr, game_drawstate *ds, game_state *state,
                       int x, int y, int tile, float xshift, float yshift)
 {
-    int bx = BORDER + WINDOW_OFFSET + TILE_SIZE * x + (xshift * TILE_SIZE);
-    int by = BORDER + WINDOW_OFFSET + TILE_SIZE * y + (yshift * TILE_SIZE);
+    int bx = BORDER + WINDOW_OFFSET + TILE_SIZE * x + (int)(xshift * TILE_SIZE);
+    int by = BORDER + WINDOW_OFFSET + TILE_SIZE * y + (int)(yshift * TILE_SIZE);
     float cx, cy, ex, ey;
     int dir, col;
 
@@ -1374,9 +1403,9 @@ static void draw_tile(frontend *fe, game_drawstate *ds, game_state *state,
      * rectangle in border colour, and a smaller rectangle in
      * background colour to fill it in.
      */
-    draw_rect(fe, bx, by, TILE_SIZE+TILE_BORDER, TILE_SIZE+TILE_BORDER,
+    draw_rect(dr, bx, by, TILE_SIZE+TILE_BORDER, TILE_SIZE+TILE_BORDER,
               COL_BORDER);
-    draw_rect(fe, bx+TILE_BORDER, by+TILE_BORDER,
+    draw_rect(dr, bx+TILE_BORDER, by+TILE_BORDER,
               TILE_SIZE-TILE_BORDER, TILE_SIZE-TILE_BORDER,
               tile & FLASHING ? COL_FLASHING : COL_BACKGROUND);
 
@@ -1389,16 +1418,16 @@ static void draw_tile(frontend *fe, game_drawstate *ds, game_state *state,
         if (tile & dir) {
             ex = (TILE_SIZE - TILE_BORDER - 1.0F) / 2.0F * X(dir);
             ey = (TILE_SIZE - TILE_BORDER - 1.0F) / 2.0F * Y(dir);
-            draw_thick_line(fe, bx+(int)cx, by+(int)cy,
-                           bx+(int)(cx+ex), by+(int)(cy+ey),
-                            COL_WIRE);
+            draw_filled_line(dr, bx+(int)cx, by+(int)cy,
+                            bx+(int)(cx+ex), by+(int)(cy+ey),
+                            COL_WIRE);
         }
     }
     for (dir = 1; dir < 0x10; dir <<= 1) {
         if (tile & dir) {
             ex = (TILE_SIZE - TILE_BORDER - 1.0F) / 2.0F * X(dir);
             ey = (TILE_SIZE - TILE_BORDER - 1.0F) / 2.0F * Y(dir);
-            draw_line(fe, bx+(int)cx, by+(int)cy,
+            draw_line(dr, bx+(int)cx, by+(int)cy,
                      bx+(int)(cx+ex), by+(int)(cy+ey), col);
         }
     }
@@ -1430,7 +1459,7 @@ static void draw_tile(frontend *fe, game_drawstate *ds, game_state *state,
             points[i+1] = by+(int)(cy+ey);
         }
 
-        draw_polygon(fe, points, 4, col, COL_WIRE);
+        draw_polygon(dr, points, 4, col, COL_WIRE);
     }
 
     /*
@@ -1467,8 +1496,8 @@ static void draw_tile(frontend *fe, game_drawstate *ds, game_state *state,
              * in: if we are fully connected to the other tile then
              * the two ACTIVE states will be the same.)
              */
-            draw_rect_coords(fe, px-vx, py-vy, px+lx+vx, py+ly+vy, COL_WIRE);
-            draw_rect_coords(fe, px, py, px+lx, py+ly,
+            draw_rect_coords(dr, px-vx, py-vy, px+lx+vx, py+ly+vy, COL_WIRE);
+            draw_rect_coords(dr, px, py, px+lx, py+ly,
                              (tile & ACTIVE) ? COL_POWERED : COL_WIRE);
         } else {
             /*
@@ -1476,14 +1505,14 @@ static void draw_tile(frontend *fe, game_drawstate *ds, game_state *state,
              * actually connected to us. Just draw a single black
              * dot.
              */
-            draw_rect_coords(fe, px, py, px, py, COL_WIRE);
+            draw_rect_coords(dr, px, py, px, py, COL_WIRE);
         }
     }
 
-    draw_update(fe, bx, by, TILE_SIZE+TILE_BORDER, TILE_SIZE+TILE_BORDER);
+    draw_update(dr, bx, by, TILE_SIZE+TILE_BORDER, TILE_SIZE+TILE_BORDER);
 }
 
-static void draw_tile_barriers(frontend *fe, game_drawstate *ds,
+static void draw_tile_barriers(drawing *dr, game_drawstate *ds,
                                game_state *state, int x, int y)
 {
     int phase;
@@ -1496,17 +1525,17 @@ static void draw_tile_barriers(frontend *fe, game_drawstate *ds,
     for (phase = 0; phase < 2; phase++) {
         for (dir = 1; dir < 0x10; dir <<= 1)
             if (barrier(state, x, y) & (dir << 4))
-                draw_barrier_corner(fe, ds, x, y, dir << 4, phase);
+                draw_barrier_corner(dr, ds, x, y, dir << 4, phase);
         for (dir = 1; dir < 0x10; dir <<= 1)
             if (barrier(state, x, y) & dir)
-                draw_barrier(fe, ds, x, y, dir, phase);
+                draw_barrier(dr, ds, x, y, dir, phase);
     }
 
-    draw_update(fe, bx, by, TILE_SIZE+TILE_BORDER, TILE_SIZE+TILE_BORDER);
+    draw_update(dr, bx, by, TILE_SIZE+TILE_BORDER, TILE_SIZE+TILE_BORDER);
 }
 
-static void draw_arrow(frontend *fe, game_drawstate *ds,
-                       int x, int y, int xdx, int xdy)
+static void draw_arrow(drawing *dr, game_drawstate *ds,
+                       int x, int y, int xdx, int xdy, int cur)
 {
     int coords[14];
     int ydy = -xdx, ydx = xdy;
@@ -1526,16 +1555,39 @@ static void draw_arrow(frontend *fe, game_drawstate *ds,
     POINT(5, 3 * TILE_SIZE / 8, TILE_SIZE / 2);   /* left concave */
     POINT(6,     TILE_SIZE / 4, TILE_SIZE / 2);   /* left corner */
 
-    draw_polygon(fe, coords, 7, COL_LOWLIGHT, COL_TEXT);
+    draw_polygon(dr, coords, 7, cur ? COL_POWERED : COL_LOWLIGHT, COL_TEXT);
 }
 
-static void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
+static void draw_arrow_for_cursor(drawing *dr, game_drawstate *ds,
+                                  int cur_x, int cur_y, int cur)
+{
+    if (cur_x == -1 && cur_y == -1)
+        return; /* 'no cursur here */
+    else if (cur_x == -1) /* LH column. */
+        draw_arrow(dr, ds, 0, cur_y+1, 0, -1, cur);
+    else if (cur_x == ds->width) /* RH column */
+        draw_arrow(dr, ds, ds->width, cur_y, 0, +1, cur);
+    else if (cur_y == -1) /* Top row */
+        draw_arrow(dr, ds, cur_x, 0, +1, 0, cur);
+    else if (cur_y == ds->height) /* Bottom row */
+        draw_arrow(dr, ds, cur_x+1, ds->height, -1, 0, cur);
+    else
+        assert(!"Invalid cursor position");
+
+    draw_update(dr,
+                cur_x * TILE_SIZE + BORDER + WINDOW_OFFSET,
+                cur_y * TILE_SIZE + BORDER + WINDOW_OFFSET,
+                TILE_SIZE, TILE_SIZE);
+}
+
+static void game_redraw(drawing *dr, game_drawstate *ds, game_state *oldstate,
                  game_state *state, int dir, game_ui *ui, float t, float ft)
 {
-    int x, y, tx, ty, frame;
+    int x, y, frame;
     unsigned char *active;
     float xshift = 0.0;
     float yshift = 0.0;
+    int cur_x = -1, cur_y = -1;
 
     /*
      * Clear the screen and draw the exterior barrier lines if this
@@ -1546,11 +1598,11 @@ static void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
 
         ds->started = TRUE;
 
-        draw_rect(fe, 0, 0, 
+        draw_rect(dr, 0, 0, 
                   BORDER * 2 + WINDOW_OFFSET * 2 + TILE_SIZE * state->width + TILE_BORDER,
                   BORDER * 2 + WINDOW_OFFSET * 2 + TILE_SIZE * state->height + TILE_BORDER,
                   COL_BACKGROUND);
-        draw_update(fe, 0, 0, 
+        draw_update(dr, 0, 0, 
                     BORDER * 2 + WINDOW_OFFSET*2 + TILE_SIZE*state->width + TILE_BORDER,
                     BORDER * 2 + WINDOW_OFFSET*2 + TILE_SIZE*state->height + TILE_BORDER);
 
@@ -1558,32 +1610,32 @@ static void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
 
             for (x = 0; x < ds->width; x++) {
                 if (barrier(state, x, 0) & UL)
-                    draw_barrier_corner(fe, ds, x, -1, LD, phase);
+                    draw_barrier_corner(dr, ds, x, -1, LD, phase);
                 if (barrier(state, x, 0) & RU)
-                    draw_barrier_corner(fe, ds, x, -1, DR, phase);
+                    draw_barrier_corner(dr, ds, x, -1, DR, phase);
                 if (barrier(state, x, 0) & U)
-                    draw_barrier(fe, ds, x, -1, D, phase);
+                    draw_barrier(dr, ds, x, -1, D, phase);
                 if (barrier(state, x, ds->height-1) & DR)
-                    draw_barrier_corner(fe, ds, x, ds->height, RU, phase);
+                    draw_barrier_corner(dr, ds, x, ds->height, RU, phase);
                 if (barrier(state, x, ds->height-1) & LD)
-                    draw_barrier_corner(fe, ds, x, ds->height, UL, phase);
+                    draw_barrier_corner(dr, ds, x, ds->height, UL, phase);
                 if (barrier(state, x, ds->height-1) & D)
-                    draw_barrier(fe, ds, x, ds->height, U, phase);
+                    draw_barrier(dr, ds, x, ds->height, U, phase);
             }
 
             for (y = 0; y < ds->height; y++) {
                 if (barrier(state, 0, y) & UL)
-                    draw_barrier_corner(fe, ds, -1, y, RU, phase);
+                    draw_barrier_corner(dr, ds, -1, y, RU, phase);
                 if (barrier(state, 0, y) & LD)
-                    draw_barrier_corner(fe, ds, -1, y, DR, phase);
+                    draw_barrier_corner(dr, ds, -1, y, DR, phase);
                 if (barrier(state, 0, y) & L)
-                    draw_barrier(fe, ds, -1, y, R, phase);
+                    draw_barrier(dr, ds, -1, y, R, phase);
                 if (barrier(state, ds->width-1, y) & RU)
-                    draw_barrier_corner(fe, ds, ds->width, y, UL, phase);
+                    draw_barrier_corner(dr, ds, ds->width, y, UL, phase);
                 if (barrier(state, ds->width-1, y) & DR)
-                    draw_barrier_corner(fe, ds, ds->width, y, LD, phase);
+                    draw_barrier_corner(dr, ds, ds->width, y, LD, phase);
                 if (barrier(state, ds->width-1, y) & R)
-                    draw_barrier(fe, ds, ds->width, y, L, phase);
+                    draw_barrier(dr, ds, ds->width, y, L, phase);
             }
         }
 
@@ -1592,15 +1644,26 @@ static void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
          */
         for (x = 0; x < ds->width; x++) {
             if (x == state->cx) continue;
-            draw_arrow(fe, ds, x, 0, +1, 0);
-            draw_arrow(fe, ds, x+1, ds->height, -1, 0);
+            draw_arrow(dr, ds, x, 0, +1, 0, 0);
+            draw_arrow(dr, ds, x+1, ds->height, -1, 0, 0);
         }
         for (y = 0; y < ds->height; y++) {
             if (y == state->cy) continue;
-            draw_arrow(fe, ds, ds->width, y, 0, +1);
-            draw_arrow(fe, ds, 0, y+1, 0, -1);
+            draw_arrow(dr, ds, ds->width, y, 0, +1, 0);
+            draw_arrow(dr, ds, 0, y+1, 0, -1, 0);
         }
     }
+    if (ui->cur_visible) {
+        cur_x = ui->cur_x; cur_y = ui->cur_y;
+    }
+    if (cur_x != ds->cur_x || cur_y != ds->cur_y) {
+        /* Cursor has changed; redraw two (prev and curr) arrows. */
+        assert(cur_x != state->cx && cur_y != state->cy);
+
+        draw_arrow_for_cursor(dr, ds, cur_x, cur_y, 1);
+        draw_arrow_for_cursor(dr, ds, ds->cur_x, ds->cur_y, 0);
+        ds->cur_x = cur_x; ds->cur_y = cur_y;
+    }
 
     /* Check if this is an undo.  If so, we will need to run any animation
      * backwards.
@@ -1612,16 +1675,15 @@ static void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
         t = ANIM_TIME - t;
     }
 
-    tx = ty = -1;
     if (oldstate && (t < ANIM_TIME)) {
         /*
          * We're animating a slide, of row/column number
          * state->last_move_pos, in direction
          * state->last_move_dir
          */
-        xshift = state->last_move_row == -1 ? 0.0 :
+        xshift = state->last_move_row == -1 ? 0.0F :
                 (1 - t / ANIM_TIME) * state->last_move_dir;
-        yshift = state->last_move_col == -1 ? 0.0 :
+        yshift = state->last_move_col == -1 ? 0.0F :
                 (1 - t / ANIM_TIME) * state->last_move_dir;
     }
     
@@ -1644,7 +1706,7 @@ static void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
         active = compute_active(state, -1, -1);
     }
 
-    clip(fe,
+    clip(dr,
          BORDER + WINDOW_OFFSET, BORDER + WINDOW_OFFSET,
          TILE_SIZE * state->width + TILE_BORDER,
          TILE_SIZE * state->height + TILE_BORDER);
@@ -1675,18 +1737,18 @@ static void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
                 index(state, ds->visible, x, y) == 0xFF ||
                 (x == state->last_move_col || y == state->last_move_row))
             {
-                float xs = (y == state->last_move_row ? xshift : 0.0);
-                float ys = (x == state->last_move_col ? yshift : 0.0);
+                float xs = (y == state->last_move_row ? xshift : (float)0.0);
+                float ys = (x == state->last_move_col ? yshift : (float)0.0);
 
-                draw_tile(fe, ds, state, x, y, c, xs, ys);
+                draw_tile(dr, ds, state, x, y, c, xs, ys);
                 if (xs < 0 && x == 0)
-                    draw_tile(fe, ds, state, state->width, y, c, xs, ys);
+                    draw_tile(dr, ds, state, state->width, y, c, xs, ys);
                 else if (xs > 0 && x == state->width - 1)
-                    draw_tile(fe, ds, state, -1, y, c, xs, ys);
+                    draw_tile(dr, ds, state, -1, y, c, xs, ys);
                 else if (ys < 0 && y == 0)
-                    draw_tile(fe, ds, state, x, state->height, c, xs, ys);
+                    draw_tile(dr, ds, state, x, state->height, c, xs, ys);
                 else if (ys > 0 && y == state->height - 1)
-                    draw_tile(fe, ds, state, x, -1, c, xs, ys);
+                    draw_tile(dr, ds, state, x, -1, c, xs, ys);
 
                 if (x == state->last_move_col || y == state->last_move_row)
                     index(state, ds->visible, x, y) = 0xFF;
@@ -1697,9 +1759,9 @@ static void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
 
     for (x = 0; x < ds->width; x++)
         for (y = 0; y < ds->height; y++)
-            draw_tile_barriers(fe, ds, state, x, y);
+            draw_tile_barriers(dr, ds, state, x, y);
 
-    unclip(fe);
+    unclip(dr);
 
     /*
      * Update the status bar.
@@ -1727,7 +1789,7 @@ static void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
 
        sprintf(statusbuf + strlen(statusbuf), " Active: %d/%d", a, n);
 
-       status_bar(fe, statusbuf);
+       status_bar(dr, statusbuf);
     }
 
     sfree(active);
@@ -1736,13 +1798,6 @@ static void game_redraw(frontend *fe, game_drawstate *ds, game_state *oldstate,
 static float game_anim_length(game_state *oldstate,
                              game_state *newstate, int dir, game_ui *ui)
 {
-    /*
-     * Don't animate an auto-solve move.
-     */
-    if ((dir > 0 && newstate->just_used_solve) ||
-       (dir < 0 && oldstate->just_used_solve))
-       return 0.0F;
-
     return ANIM_TIME;
 }
 
@@ -1771,9 +1826,9 @@ static float game_flash_length(game_state *oldstate,
     return 0.0F;
 }
 
-static int game_wants_statusbar(void)
+static int game_status(game_state *state)
 {
-    return TRUE;
+    return state->completed ? +1 : 0;
 }
 
 static int game_timing_state(game_state *state, game_ui *ui)
@@ -1781,12 +1836,20 @@ static int game_timing_state(game_state *state, game_ui *ui)
     return FALSE;
 }
 
+static void game_print_size(game_params *params, float *x, float *y)
+{
+}
+
+static void game_print(drawing *dr, game_state *state, int tilesize)
+{
+}
+
 #ifdef COMBINED
 #define thegame netslide
 #endif
 
 const struct game thegame = {
-    "Netslide", "games.netslide",
+    "Netslide", "games.netslide", "netslide",
     default_params,
     game_fetch_preset,
     decode_params,
@@ -1801,7 +1864,7 @@ const struct game thegame = {
     dup_game,
     free_game,
     TRUE, solve_game,
-    FALSE, game_text_format,
+    FALSE, game_can_format_as_text_now, game_text_format,
     new_ui,
     free_ui,
     encode_ui,
@@ -1816,7 +1879,11 @@ const struct game thegame = {
     game_redraw,
     game_anim_length,
     game_flash_length,
-    game_wants_statusbar,
+    game_status,
+    FALSE, FALSE, game_print_size, game_print,
+    TRUE,                             /* wants_statusbar */
     FALSE, game_timing_state,
-    0,                                /* mouse_priorities */
+    0,                                /* flags */
 };
+
+/* vim: set shiftwidth=4 tabstop=8: */