X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=src%2Fgrr_board_view.c;h=8d85988f0cb2c414a19b94bded0d72b11454bec9;hb=7ee31401a35405ee700c8fab563cecc9f43db3a1;hp=66a261732e7f02793b21a5f1bca6a091b54b9d19;hpb=ef3b9b45ab4b9ac1638b21cbb049ebeba99629ae;p=grrobot

diff --git a/src/grr_board_view.c b/src/grr_board_view.c
index 66a2617..8d85988 100644
--- a/src/grr_board_view.c
+++ b/src/grr_board_view.c
@@ -130,6 +130,9 @@ grr_board_view_init (grr_board_view_t *view)
     view->client = NULL;
     
     view->button = 0;
+
+    view->time = 60.0;
+    view->drift_correct = 0.0;
     view->timer = 0;
 
     view->cell_width = 0;
@@ -481,6 +484,28 @@ grr_board_view_expose (GtkWidget      *widget,
 	cairo_fill (xrs);
 	grr_icon_draw (view->target_icon[rr_target_idx (goal_target)], xrs);
 	cairo_restore (xrs);
+
+	/* Draw clock */
+	if (view->time < 60.0) {
+	    cairo_save (xrs);
+	    cairo_new_path (xrs);
+	    cairo_move_to (xrs,
+			   (double) view->board_width / 2 * view->cell_width,
+			   (double) view->board_height / 2 * view->cell_height);
+	    cairo_arc (xrs,
+		       (double) view->board_width / 2 * view->cell_width,
+		       (double) view->board_height / 2 * view->cell_height,
+		       .9 * view->cell_width,
+		       - M_PI_2,
+		       2 * M_PI * (60.0 - view->time) / 60.0 - M_PI_2);
+	    cairo_close_path (xrs);
+
+	    cairo_set_rgb_color (xrs, 0.0, 0.0, 0.0);
+	    cairo_set_alpha (xrs, 0.5);
+	    cairo_fill (xrs);
+
+	    cairo_restore (xrs);
+	}
     }
 
     /* Draw walls */
@@ -670,3 +695,75 @@ grr_board_view_mark_damage (grr_board_view_t *view, int i, int j)
     grr_board_view_transform_cell_to_pixel (view, i, j, &x, &y);
     gtk_widget_queue_draw_area (GTK_WIDGET (view), x, y, view->cell_width, view->cell_height);
 }
+
+#define TIMER_INTERVAL_MS 100
+
+static void
+grr_board_view_refresh_timer (grr_board_view_t *view)
+{
+    int x, y;
+
+    grr_board_view_transform_cell_to_pixel (view,
+					    view->board_width / 2 - 1,
+					    view->board_height / 2 -1,
+					    &x, &y);
+    gtk_widget_queue_draw_area (GTK_WIDGET (view),
+				x, y,
+				2 * view->cell_width,
+				2 * view->cell_height);
+}
+
+static gboolean
+grr_board_view_decrement_timer (void *widget)
+{
+    grr_board_view_t *view = widget;
+
+    view->time -= TIMER_INTERVAL_MS / 1000.0;
+    view->time += view->drift_correct;
+
+    grr_board_view_refresh_timer (view);
+
+    return TRUE;
+}
+
+void
+grr_board_view_start_timer (grr_board_view_t *view, double time)
+{
+    /* XXX: It would be good to adjust the clock for latency somewhere... */
+    /* Correct any drift within the next 10 seconds, or half the
+       remaining time --- whichever is less. */
+    if (view->timer) {
+	double correction_time;
+	if (time >= 20.0)
+	    correction_time = 10.0;
+	else
+	    correction_time = time / 2.0;
+	view->drift_correct = (time - view->time) / (correction_time * TIMER_INTERVAL_MS);
+    } else {
+	view->time = time;
+
+	view->timer = gtk_timeout_add (TIMER_INTERVAL_MS, grr_board_view_decrement_timer, view);
+    }
+}
+
+void
+grr_board_view_stop_timer (grr_board_view_t *view)
+{
+    if (view->timer == 0)
+	return;
+
+    gtk_timeout_remove (view->timer);
+    view->timer = 0;
+    view->time = 0.0;
+
+    grr_board_view_refresh_timer (view);
+}
+
+void
+grr_board_view_reset_timer (grr_board_view_t *view)
+{
+    grr_board_view_stop_timer (view);
+
+    view->time = 60.0;
+    view->drift_correct = 0.0;
+}