+#if DEBUG_FRAME_TIME
+static void PrintFrameTimeDebugging()
+{
+ static unsigned int last_counter = 0;
+ unsigned int counter = Counter();
+ int diff_1 = counter - last_counter;
+ int diff_2 = diff_1 - GAME_FRAME_DELAY;
+ int diff_2_max = 20;
+ int diff_2_cut = MIN(ABS(diff_2), diff_2_max);
+ char diff_bar[2 * diff_2_max + 5];
+ int pos = 0;
+ int i;
+
+ diff_bar[pos++] = (diff_2 < -diff_2_max ? '<' : ' ');
+
+ for (i = 0; i < diff_2_max; i++)
+ diff_bar[pos++] = (diff_2 >= 0 ? ' ' :
+ i >= diff_2_max - diff_2_cut ? '-' : ' ');
+
+ diff_bar[pos++] = '|';
+
+ for (i = 0; i < diff_2_max; i++)
+ diff_bar[pos++] = (diff_2 <= 0 ? ' ' : i < diff_2_cut ? '+' : ' ');
+
+ diff_bar[pos++] = (diff_2 > diff_2_max ? '>' : ' ');
+
+ diff_bar[pos++] = '\0';
+
+ Error(ERR_INFO, "%06d [%02d] [%c%02d] %s",
+ counter,
+ diff_1,
+ (diff_2 < 0 ? '-' : diff_2 > 0 ? '+' : ' '), ABS(diff_2),
+ diff_bar);
+
+ last_counter = counter;
+}
+#endif
+
+static int unifiedRedrawMask(int mask)
+{
+ if (mask & REDRAW_ALL)
+ return REDRAW_ALL;
+
+ if (mask & REDRAW_FIELD && mask & REDRAW_DOORS)
+ return REDRAW_ALL;
+
+ return mask;
+}
+
+static boolean equalRedrawMasks(int mask_1, int mask_2)
+{
+ return unifiedRedrawMask(mask_1) == unifiedRedrawMask(mask_2);
+}
+