+ * Does a fadeout for the specified number of seconds before next screenchange
+ */
+void fadeout_screen(float seconds);
+
+/**
+ * Does a shrinking fade towards the destposition for the specified number of
+ * seconds before next screenchange
+ */
+void shrink_screen(float dest_x, float dest_y, float seconds);
+
+/**
+ * Aborts any kind of previous screen fade; the screenchange will happen
+ * anyway.
+ */
+void abort_screenfade();
+
+/**