X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?a=blobdiff_plain;f=rect.c;h=465e1436fac50b2cfc8b125224011316f3b83178;hb=a0a581c8b5422bf0c5ed3fde6aa25811e4eb89fc;hp=72a00e14ec1a60f978568b572ef319497f4fc48a;hpb=ed63f9c50efeb26f3decade7dc50c7b0efa008ae;p=sgt-puzzles.git

diff --git a/rect.c b/rect.c
index 72a00e1..465e143 100644
--- a/rect.c
+++ b/rect.c
@@ -129,7 +129,7 @@ static void free_params(game_params *params)
     sfree(params);
 }
 
-static game_params *dup_params(game_params *params)
+static game_params *dup_params(const game_params *params)
 {
     game_params *ret = snew(game_params);
     *ret = *params;		       /* structure copy */
@@ -157,7 +157,7 @@ static void decode_params(game_params *ret, char const *string)
     }
 }
 
-static char *encode_params(game_params *params, int full)
+static char *encode_params(const game_params *params, int full)
 {
     char data[256];
 
@@ -170,7 +170,7 @@ static char *encode_params(game_params *params, int full)
     return dupstr(data);
 }
 
-static config_item *game_configure(game_params *params)
+static config_item *game_configure(const game_params *params)
 {
     config_item *ret;
     char buf[80];
@@ -208,7 +208,7 @@ static config_item *game_configure(game_params *params)
     return ret;
 }
 
-static game_params *custom_params(config_item *cfg)
+static game_params *custom_params(const config_item *cfg)
 {
     game_params *ret = snew(game_params);
 
@@ -220,7 +220,7 @@ static game_params *custom_params(config_item *cfg)
     return ret;
 }
 
-static char *validate_params(game_params *params, int full)
+static char *validate_params(const game_params *params, int full)
 {
     if (params->w <= 0 || params->h <= 0)
 	return "Width and height must both be greater than zero";
@@ -1146,9 +1146,11 @@ static void display_grid(game_params *params, int *grid, int *numbers, int all)
 }
 #endif
 
-static char *new_game_desc(game_params *params, random_state *rs,
+static char *new_game_desc(const game_params *params_in, random_state *rs,
 			   char **aux, int interactive)
 {
+    game_params params_copy = *params_in; /* structure copy */
+    game_params *params = &params_copy;
     int *grid, *numbers = NULL;
     int x, y, y2, y2last, yx, run, i, nsquares;
     char *desc, *p;
@@ -1315,7 +1317,8 @@ static char *new_game_desc(game_params *params, random_state *rs,
                     if (ndirs > 0) {
                         int which, dir;
                         struct rect r1, r2;
-
+                        memset(&r1, 0, sizeof(struct rect));
+                        memset(&r2, 0, sizeof(struct rect));
                         which = random_upto(rs, ndirs);
                         dir = dirs[which];
 
@@ -1776,7 +1779,7 @@ static char *new_game_desc(game_params *params, random_state *rs,
     return desc;
 }
 
-static char *validate_desc(game_params *params, char *desc)
+static char *validate_desc(const game_params *params, const char *desc)
 {
     int area = params->w * params->h;
     int squares = 0;
@@ -1897,7 +1900,8 @@ static unsigned char *get_correct(game_state *state)
     return ret;
 }
 
-static game_state *new_game(midend *me, game_params *params, char *desc)
+static game_state *new_game(midend *me, const game_params *params,
+                            const char *desc)
 {
     game_state *state = snew(game_state);
     int x, y, i, area;
@@ -1942,7 +1946,7 @@ static game_state *new_game(midend *me, game_params *params, char *desc)
     return state;
 }
 
-static game_state *dup_game(game_state *state)
+static game_state *dup_game(const game_state *state)
 {
     game_state *ret = snew(game_state);
 
@@ -1975,8 +1979,8 @@ static void free_game(game_state *state)
     sfree(state);
 }
 
-static char *solve_game(game_state *state, game_state *currstate,
-			char *ai, char **error)
+static char *solve_game(const game_state *state, const game_state *currstate,
+                        const char *ai, char **error)
 {
     unsigned char *vedge, *hedge;
     int x, y, len;
@@ -2044,12 +2048,12 @@ static char *solve_game(game_state *state, game_state *currstate,
     return ret;
 }
 
-static int game_can_format_as_text_now(game_params *params)
+static int game_can_format_as_text_now(const game_params *params)
 {
     return TRUE;
 }
 
-static char *game_text_format(game_state *state)
+static char *game_text_format(const game_state *state)
 {
     char *ret, *p, buf[80];
     int i, x, y, col, maxlen;
@@ -2184,18 +2188,24 @@ struct game_ui {
     int cur_x, cur_y, cur_visible, cur_dragging;
 };
 
-static game_ui *new_ui(game_state *state)
+static void reset_ui(game_ui *ui)
 {
-    game_ui *ui = snew(game_ui);
     ui->drag_start_x = -1;
     ui->drag_start_y = -1;
     ui->drag_end_x = -1;
     ui->drag_end_y = -1;
-    ui->dragged = ui->erasing = FALSE;
     ui->x1 = -1;
     ui->y1 = -1;
     ui->x2 = -1;
     ui->y2 = -1;
+    ui->dragged = FALSE;
+}
+
+static game_ui *new_ui(const game_state *state)
+{
+    game_ui *ui = snew(game_ui);
+    reset_ui(ui);
+    ui->erasing = FALSE;
     ui->cur_x = ui->cur_y = ui->cur_visible = ui->cur_dragging = 0;
     return ui;
 }
@@ -2205,12 +2215,12 @@ static void free_ui(game_ui *ui)
     sfree(ui);
 }
 
-static char *encode_ui(game_ui *ui)
+static char *encode_ui(const game_ui *ui)
 {
     return NULL;
 }
 
-static void decode_ui(game_ui *ui, char *encoding)
+static void decode_ui(game_ui *ui, const char *encoding)
 {
 }
 
@@ -2301,7 +2311,7 @@ static void coord_round(float x, float y, int *xr, int *yr)
 /*
  * Returns TRUE if it has made any change to the grid.
  */
-static int grid_draw_rect(game_state *state,
+static int grid_draw_rect(const game_state *state,
 			  unsigned char *hedge, unsigned char *vedge,
 			  int c, int really, int outline,
 			  int x1, int y1, int x2, int y2)
@@ -2346,7 +2356,7 @@ static int grid_draw_rect(game_state *state,
     return changed;
 }
 
-static int ui_draw_rect(game_state *state, game_ui *ui,
+static int ui_draw_rect(const game_state *state, const game_ui *ui,
 			unsigned char *hedge, unsigned char *vedge, int c,
 			int really, int outline)
 {
@@ -2354,8 +2364,8 @@ static int ui_draw_rect(game_state *state, game_ui *ui,
 			  ui->x1, ui->y1, ui->x2, ui->y2);
 }
 
-static void game_changed_state(game_ui *ui, game_state *oldstate,
-                               game_state *newstate)
+static void game_changed_state(game_ui *ui, const game_state *oldstate,
+                               const game_state *newstate)
 {
 }
 
@@ -2365,8 +2375,9 @@ struct game_drawstate {
     unsigned long *visible;
 };
 
-static char *interpret_move(game_state *from, game_ui *ui, game_drawstate *ds,
-			    int x, int y, int button)
+static char *interpret_move(const game_state *from, game_ui *ui,
+                            const game_drawstate *ds,
+                            int x, int y, int button)
 {
     int xc, yc;
     int startdrag = FALSE, enddrag = FALSE, active = FALSE, erasing = FALSE;
@@ -2377,21 +2388,8 @@ static char *interpret_move(game_state *from, game_ui *ui, game_drawstate *ds,
     coord_round(FROMCOORD((float)x), FROMCOORD((float)y), &xc, &yc);
 
     if (button == LEFT_BUTTON || button == RIGHT_BUTTON) {
-        if (ui->drag_start_x >= 0 && ui->cur_dragging) {
-            /*
-             * If a keyboard drag is in progress, unceremoniously
-             * cancel it.
-             */
-            ui->drag_start_x = -1;
-            ui->drag_start_y = -1;
-            ui->drag_end_x = -1;
-            ui->drag_end_y = -1;
-            ui->x1 = -1;
-            ui->y1 = -1;
-            ui->x2 = -1;
-            ui->y2 = -1;
-            ui->dragged = FALSE;
-        }
+        if (ui->drag_start_x >= 0 && ui->cur_dragging)
+            reset_ui(ui); /* cancel keyboard dragging */
         startdrag = TRUE;
         ui->cur_visible = ui->cur_dragging = FALSE;
         active = TRUE;
@@ -2435,6 +2433,15 @@ static char *interpret_move(game_state *from, game_ui *ui, game_drawstate *ds,
             startdrag = TRUE;
             active = TRUE;
         }
+    } else if (button == '\b' || button == 27) {
+        if (!ui->cur_dragging) {
+            ui->cur_visible = FALSE;
+        } else {
+            assert(ui->cur_visible);
+            reset_ui(ui); /* cancel keyboard dragging */
+            ui->cur_dragging = FALSE;
+        }
+        return "";
     } else if (button != LEFT_DRAG && button != RIGHT_DRAG) {
         return NULL;
     }
@@ -2511,15 +2518,7 @@ static char *interpret_move(game_state *from, game_ui *ui, game_drawstate *ds,
 	    }
 	}
 
-	ui->drag_start_x = -1;
-	ui->drag_start_y = -1;
-	ui->drag_end_x = -1;
-	ui->drag_end_y = -1;
-	ui->x1 = -1;
-	ui->y1 = -1;
-	ui->x2 = -1;
-	ui->y2 = -1;
-	ui->dragged = FALSE;
+        reset_ui(ui);
 	active = TRUE;
     }
 
@@ -2531,13 +2530,13 @@ static char *interpret_move(game_state *from, game_ui *ui, game_drawstate *ds,
 	return NULL;
 }
 
-static game_state *execute_move(game_state *from, char *move)
+static game_state *execute_move(const game_state *from, const char *move)
 {
     game_state *ret;
     int x1, y1, x2, y2, mode;
 
     if (move[0] == 'S') {
-	char *p = move+1;
+	const char *p = move+1;
 	int x, y;
 
 	ret = dup_game(from);
@@ -2618,8 +2617,8 @@ static game_state *execute_move(game_state *from, char *move)
 #define COLOUR(k) ( (k)==1 ? COL_LINE : (k)==2 ? COL_DRAG : COL_DRAGERASE )
 #define MAX4(x,y,z,w) ( max(max(x,y),max(z,w)) )
 
-static void game_compute_size(game_params *params, int tilesize,
-			      int *x, int *y)
+static void game_compute_size(const game_params *params, int tilesize,
+                              int *x, int *y)
 {
     /* Ick: fake up `ds->tilesize' for macro expansion purposes */
     struct { int tilesize; } ads, *ds = &ads;
@@ -2630,7 +2629,7 @@ static void game_compute_size(game_params *params, int tilesize,
 }
 
 static void game_set_size(drawing *dr, game_drawstate *ds,
-			  game_params *params, int tilesize)
+                          const game_params *params, int tilesize)
 {
     ds->tilesize = tilesize;
 }
@@ -2673,7 +2672,7 @@ static float *game_colours(frontend *fe, int *ncolours)
     return ret;
 }
 
-static game_drawstate *game_new_drawstate(drawing *dr, game_state *state)
+static game_drawstate *game_new_drawstate(drawing *dr, const game_state *state)
 {
     struct game_drawstate *ds = snew(struct game_drawstate);
     int i;
@@ -2695,7 +2694,7 @@ static void game_free_drawstate(drawing *dr, game_drawstate *ds)
     sfree(ds);
 }
 
-static void draw_tile(drawing *dr, game_drawstate *ds, game_state *state,
+static void draw_tile(drawing *dr, game_drawstate *ds, const game_state *state,
                       int x, int y, unsigned char *hedge, unsigned char *vedge,
                       unsigned char *corners, unsigned long bgflags)
 {
@@ -2752,9 +2751,10 @@ static void draw_tile(drawing *dr, game_drawstate *ds, game_state *state,
     draw_update(dr, cx, cy, TILE_SIZE+1, TILE_SIZE+1);
 }
 
-static void game_redraw(drawing *dr, game_drawstate *ds, game_state *oldstate,
-                 game_state *state, int dir, game_ui *ui,
-                 float animtime, float flashtime)
+static void game_redraw(drawing *dr, game_drawstate *ds,
+                        const game_state *oldstate, const game_state *state,
+                        int dir, const game_ui *ui,
+                        float animtime, float flashtime)
 {
     int x, y;
     unsigned char *hedge, *vedge, *corners;
@@ -2865,14 +2865,14 @@ static void game_redraw(drawing *dr, game_drawstate *ds, game_state *oldstate,
     sfree(corners);
 }
 
-static float game_anim_length(game_state *oldstate,
-			      game_state *newstate, int dir, game_ui *ui)
+static float game_anim_length(const game_state *oldstate,
+                              const game_state *newstate, int dir, game_ui *ui)
 {
     return 0.0F;
 }
 
-static float game_flash_length(game_state *oldstate,
-			       game_state *newstate, int dir, game_ui *ui)
+static float game_flash_length(const game_state *oldstate,
+                               const game_state *newstate, int dir, game_ui *ui)
 {
     if (!oldstate->completed && newstate->completed &&
 	!oldstate->cheated && !newstate->cheated)
@@ -2880,17 +2880,17 @@ static float game_flash_length(game_state *oldstate,
     return 0.0F;
 }
 
-static int game_status(game_state *state)
+static int game_status(const game_state *state)
 {
     return state->completed ? +1 : 0;
 }
 
-static int game_timing_state(game_state *state, game_ui *ui)
+static int game_timing_state(const game_state *state, game_ui *ui)
 {
     return TRUE;
 }
 
-static void game_print_size(game_params *params, float *x, float *y)
+static void game_print_size(const game_params *params, float *x, float *y)
 {
     int pw, ph;
 
@@ -2902,7 +2902,7 @@ static void game_print_size(game_params *params, float *x, float *y)
     *y = ph / 100.0F;
 }
 
-static void game_print(drawing *dr, game_state *state, int tilesize)
+static void game_print(drawing *dr, const game_state *state, int tilesize)
 {
     int w = state->w, h = state->h;
     int ink = print_mono_colour(dr, 0);
@@ -2960,9 +2960,9 @@ static void game_print(drawing *dr, game_state *state, int tilesize)
 #endif
 
 const struct game thegame = {
-    "Rectangles", "games.rectangles", "rectangles",
+    "Rectangles", "games.rectangles", "rect",
     default_params,
-    game_fetch_preset,
+    game_fetch_preset, NULL,
     decode_params,
     encode_params,
     free_params,