X-Git-Url: http://git.draconx.ca/gitweb/rrace.git/blobdiff_plain/b39d19918b63b80d1f3b068d158fe43415b9d1b6..3ac1945c3a0006d33a90a0c2dbee2f2e96e8907d:/src/x11.c?ds=sidebyside

diff --git a/src/x11.c b/src/x11.c
index f572616..caf3518 100644
--- a/src/x11.c
+++ b/src/x11.c
@@ -134,7 +134,7 @@ redraw_goal_tile(struct app_state *state, Display *display, Drawable d,
 	return redraw_tile(state, display, d, gp[0], gp[1], gp[2], x, y, w, h);
 }
 
-void x11_redraw_goal(struct app_state *state)
+void x11_redraw_goal(struct app_state *state, uint_fast32_t mask)
 {
 	Display *display = XtDisplay(state->goal);
 	Window window = XtWindow(state->goal);
@@ -142,8 +142,20 @@ void x11_redraw_goal(struct app_state *state)
 	int i;
 
 	XtVaGetValues(state->goal, XmNwidth, &w, XmNheight, &h, (char *)NULL);
-	for (i = 0; i < 9; i++)
-		redraw_goal_tile(state, display, window, i%3, i/3, w/3, h/3);
+	for (i = 0; i < 9; i++) {
+		int x = i%3, y = i/3;
+
+		if (mask & 1) {
+			redraw_goal_tile(state, display, window,
+			                        x, y, w/3, h/3);
+		}
+
+		/*
+		 * Goal bitmaps have a gap of 2 tiles between each row.
+		 * This funny shift will accomodate that.
+		 */
+		mask >>= 1|x;
+	}
 }
 
 /* Render the goal area as the window's icon */