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d732c869c2
Add the names of the main widgets as keywords to our demos, but also things like "game". This helps finding relevant demos in our growing list. You can now for example type "label", and find the "error states" and "links" demos showing GtkLabel features.
474 lines
11 KiB
C
474 lines
11 KiB
C
/* Lists/Minesweeper
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* #Keywords: GtkGridView, GListModel, game
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*
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* This demo shows how to develop a user interface for small game using a
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* grid view.
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*
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* It demonstrates how to use the activate signal and single-press behavior
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* to implement rather different interaction behavior to a typical list.
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*/
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#include <glib/gi18n.h>
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#include <gtk/gtk.h>
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/*** The cell object ***/
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/* Create an object that holds the data for a cell in the game */
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typedef struct _SweeperCell SweeperCell;
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struct _SweeperCell
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{
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GObject parent_instance;
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gboolean is_mine;
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gboolean is_visible;
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guint neighbor_mines;
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};
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enum {
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CELL_PROP_0,
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CELL_PROP_LABEL,
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N_CELL_PROPS
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};
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#define SWEEPER_TYPE_CELL (sweeper_cell_get_type ())
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G_DECLARE_FINAL_TYPE (SweeperCell, sweeper_cell, SWEEPER, CELL, GObject);
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G_DEFINE_TYPE (SweeperCell, sweeper_cell, G_TYPE_OBJECT);
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static GParamSpec *cell_properties[N_CELL_PROPS] = { NULL, };
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static const char *
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sweeper_cell_get_label (SweeperCell *self)
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{
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static const char *minecount_labels[10] = { "", "1", "2", "3", "4", "5", "6", "7", "8", "9" };
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if (!self->is_visible)
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return "?";
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if (self->is_mine)
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return "💣";
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return minecount_labels[self->neighbor_mines];
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}
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static void
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sweeper_cell_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec)
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{
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SweeperCell *self = SWEEPER_CELL (object);
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switch (property_id)
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{
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case CELL_PROP_LABEL:
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g_value_set_string (value, sweeper_cell_get_label (self));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static void
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sweeper_cell_class_init (SweeperCellClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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gobject_class->get_property = sweeper_cell_get_property;
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cell_properties[CELL_PROP_LABEL] =
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g_param_spec_string ("label",
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"label",
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"label to display for this row",
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NULL,
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G_PARAM_READABLE);
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g_object_class_install_properties (gobject_class, N_CELL_PROPS, cell_properties);
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}
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static void
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sweeper_cell_init (SweeperCell *self)
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{
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}
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static void
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sweeper_cell_reveal (SweeperCell *self)
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{
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if (self->is_visible)
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return;
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self->is_visible = TRUE;
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g_object_notify_by_pspec (G_OBJECT (self), cell_properties[CELL_PROP_LABEL]);
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}
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static SweeperCell *
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sweeper_cell_new (void)
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{
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return g_object_new (SWEEPER_TYPE_CELL, NULL);
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}
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/*** The board object ***/
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/* Create an object that holds the data for the game */
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typedef struct _SweeperGame SweeperGame;
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struct _SweeperGame
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{
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GObject parent_instance;
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GPtrArray *cells;
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guint width;
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guint height;
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gboolean playing;
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gboolean win;
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};
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enum {
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GAME_PROP_0,
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GAME_PROP_HEIGHT,
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GAME_PROP_PLAYING,
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GAME_PROP_WIDTH,
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GAME_PROP_WIN,
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N_GAME_PROPS
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};
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#define SWEEPER_TYPE_GAME (sweeper_game_get_type ())
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G_DECLARE_FINAL_TYPE (SweeperGame, sweeper_game, SWEEPER, GAME, GObject);
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static GType
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sweeper_game_list_model_get_item_type (GListModel *model)
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{
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return SWEEPER_TYPE_GAME;
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}
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static guint
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sweeper_game_list_model_get_n_items (GListModel *model)
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{
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SweeperGame *self = SWEEPER_GAME (model);
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return self->width * self->height;
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}
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static gpointer
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sweeper_game_list_model_get_item (GListModel *model,
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guint position)
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{
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SweeperGame *self = SWEEPER_GAME (model);
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return g_object_ref (g_ptr_array_index (self->cells, position));
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}
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static void
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sweeper_game_list_model_init (GListModelInterface *iface)
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{
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iface->get_item_type = sweeper_game_list_model_get_item_type;
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iface->get_n_items = sweeper_game_list_model_get_n_items;
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iface->get_item = sweeper_game_list_model_get_item;
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}
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G_DEFINE_TYPE_WITH_CODE (SweeperGame, sweeper_game, G_TYPE_OBJECT,
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G_IMPLEMENT_INTERFACE (G_TYPE_LIST_MODEL, sweeper_game_list_model_init))
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static GParamSpec *game_properties[N_GAME_PROPS] = { NULL, };
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static void
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sweeper_game_dispose (GObject *object)
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{
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SweeperGame *self = SWEEPER_GAME (object);
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g_clear_pointer (&self->cells, g_ptr_array_unref);
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G_OBJECT_CLASS (sweeper_game_parent_class)->dispose (object);
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}
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static void
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sweeper_game_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec)
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{
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SweeperGame *self = SWEEPER_GAME (object);
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switch (property_id)
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{
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case GAME_PROP_HEIGHT:
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g_value_set_uint (value, self->height);
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break;
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case GAME_PROP_PLAYING:
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g_value_set_boolean (value, self->playing);
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break;
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case GAME_PROP_WIDTH:
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g_value_set_uint (value, self->width);
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break;
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case GAME_PROP_WIN:
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g_value_set_boolean (value, self->win);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static void
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sweeper_game_class_init (SweeperGameClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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gobject_class->dispose = sweeper_game_dispose;
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gobject_class->get_property = sweeper_game_get_property;
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game_properties[GAME_PROP_HEIGHT] =
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g_param_spec_uint ("height",
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"height",
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"height of the game grid",
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1, G_MAXUINT, 8,
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G_PARAM_READABLE);
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game_properties[GAME_PROP_PLAYING] =
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g_param_spec_boolean ("playing",
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"playing",
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"if the game is still going on",
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FALSE,
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G_PARAM_READABLE);
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game_properties[GAME_PROP_WIDTH] =
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g_param_spec_uint ("width",
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"width",
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"width of the game grid",
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1, G_MAXUINT, 8,
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G_PARAM_READABLE);
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game_properties[GAME_PROP_WIN] =
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g_param_spec_boolean ("win",
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"win",
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"if the game was won",
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FALSE,
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G_PARAM_READABLE);
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g_object_class_install_properties (gobject_class, N_GAME_PROPS, game_properties);
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}
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static void
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sweeper_game_reset_board (SweeperGame *self,
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guint width,
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guint height)
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{
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guint i;
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g_ptr_array_set_size (self->cells, 0);
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for (i = 0; i < width * height; i++)
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{
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g_ptr_array_add (self->cells, sweeper_cell_new ());
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}
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if (self->width != width)
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{
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self->width = width;
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g_object_notify_by_pspec (G_OBJECT (self), game_properties[GAME_PROP_WIDTH]);
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}
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if (self->height != height)
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{
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self->height = height;
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g_object_notify_by_pspec (G_OBJECT (self), game_properties[GAME_PROP_HEIGHT]);
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}
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if (!self->playing)
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{
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self->playing = TRUE;
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g_object_notify_by_pspec (G_OBJECT (self), game_properties[GAME_PROP_PLAYING]);
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}
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if (self->win)
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{
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self->win = FALSE;
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g_object_notify_by_pspec (G_OBJECT (self), game_properties[GAME_PROP_WIN]);
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}
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}
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static void
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sweeper_game_place_mines (SweeperGame *self,
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guint n_mines)
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{
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guint i;
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for (i = 0; i < n_mines; i++)
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{
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SweeperCell *cell;
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do {
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cell = g_ptr_array_index (self->cells, g_random_int_range (0, self->cells->len));
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} while (cell->is_mine);
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cell->is_mine = TRUE;
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}
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}
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static SweeperCell *
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get_cell (SweeperGame *self,
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guint x,
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guint y)
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{
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return g_ptr_array_index (self->cells, y * self->width + x);
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}
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static void
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sweeper_game_count_neighbor_mines (SweeperGame *self,
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guint width,
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guint height)
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{
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guint x, y, x2, y2;
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for (y = 0; y < height; y++)
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{
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for (x = 0; x < width; x++)
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{
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SweeperCell *cell = get_cell (self, x, y);
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for (y2 = MAX (1, y) - 1; y2 < MIN (height, y + 2); y2++)
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{
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for (x2 = MAX (1, x) - 1; x2 < MIN (width, x + 2); x2++)
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{
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SweeperCell *other = get_cell (self, x2, y2);
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if (other->is_mine)
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cell->neighbor_mines++;
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}
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}
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}
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}
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}
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static void
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sweeper_game_new_game (SweeperGame *self,
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guint width,
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guint height,
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guint n_mines)
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{
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guint n_items_before;
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g_return_if_fail (n_mines <= width * height);
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n_items_before = self->width * self->height;
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g_object_freeze_notify (G_OBJECT (self));
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sweeper_game_reset_board (self, width, height);
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sweeper_game_place_mines (self, n_mines);
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sweeper_game_count_neighbor_mines (self, width, height);
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g_list_model_items_changed (G_LIST_MODEL (self), 0, n_items_before, width * height);
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g_object_thaw_notify (G_OBJECT (self));
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}
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static void
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sweeper_game_init (SweeperGame *self)
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{
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self->cells = g_ptr_array_new_with_free_func (g_object_unref);
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sweeper_game_new_game (self, 8, 8, 10);
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}
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static void
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sweeper_game_end (SweeperGame *self,
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gboolean win)
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{
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if (self->playing)
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{
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self->playing = FALSE;
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g_object_notify_by_pspec (G_OBJECT (self), game_properties[GAME_PROP_PLAYING]);
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}
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if (self->win != win)
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{
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self->win = win;
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g_object_notify_by_pspec (G_OBJECT (self), game_properties[GAME_PROP_WIN]);
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}
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}
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static void
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sweeper_game_check_finished (SweeperGame *self)
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{
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guint i;
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if (!self->playing)
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return;
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for (i = 0; i < self->cells->len; i++)
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{
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SweeperCell *cell = g_ptr_array_index (self->cells, i);
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/* There's still a non-revealed cell that isn't a mine */
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if (!cell->is_visible && !cell->is_mine)
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return;
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}
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sweeper_game_end (self, TRUE);
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}
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static void
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sweeper_game_reveal_cell (SweeperGame *self,
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guint position)
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{
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SweeperCell *cell;
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if (!self->playing)
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return;
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cell = g_ptr_array_index (self->cells, position);
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sweeper_cell_reveal (cell);
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if (cell->is_mine)
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sweeper_game_end (self, FALSE);
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sweeper_game_check_finished (self);
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}
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void
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minesweeper_cell_clicked_cb (GtkGridView *gridview,
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guint pos,
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SweeperGame *game)
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{
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sweeper_game_reveal_cell (game, pos);
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}
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void
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minesweeper_new_game_cb (GtkButton *button,
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SweeperGame *game)
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{
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sweeper_game_new_game (game, 8, 8, 10);
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}
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static GtkWidget *window = NULL;
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GtkWidget *
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do_listview_minesweeper (GtkWidget *do_widget)
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{
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if (window == NULL)
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{
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GtkBuilder *builder;
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g_type_ensure (SWEEPER_TYPE_GAME);
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builder = gtk_builder_new_from_resource ("/listview_minesweeper/listview_minesweeper.ui");
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window = GTK_WIDGET (gtk_builder_get_object (builder, "window"));
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gtk_window_set_display (GTK_WINDOW (window),
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gtk_widget_get_display (do_widget));
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g_object_add_weak_pointer (G_OBJECT (window), (gpointer *) &window);
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g_object_unref (builder);
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}
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if (!gtk_widget_get_visible (window))
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gtk_widget_show (window);
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else
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gtk_window_destroy (GTK_WINDOW (window));
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return window;
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}
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