diff options
| -rw-r--r-- | src/smallmap_gui.cpp | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/src/smallmap_gui.cpp b/src/smallmap_gui.cpp index 56ce1378b..535b72072 100644 --- a/src/smallmap_gui.cpp +++ b/src/smallmap_gui.cpp @@ -562,7 +562,9 @@ class SmallMapWindow : public Window int32 scroll_x; int32 scroll_y; int32 subscroll; - uint8 refresh; + + static const uint8 FORCE_REFRESH_PERIOD = 0x1F; ///< map is redrawn after that many ticks + uint8 refresh; ///< refresh counter, zeroed every FORCE_REFRESH_PERIOD ticks static const int COLUMN_WIDTH = 119; static const int MIN_LEGEND_HEIGHT = 6 * 7; @@ -874,7 +876,7 @@ public: } } - SmallMapWindow(const WindowDesc *desc, int window_number) : Window(desc, window_number) + SmallMapWindow(const WindowDesc *desc, int window_number) : Window(desc, window_number), refresh(FORCE_REFRESH_PERIOD) { this->LowerWidget(this->map_type + SM_WIDGET_CONTOUR); this->SetWidgetLoweredState(SM_WIDGET_TOGGLETOWNNAME, this->show_towns); @@ -1050,7 +1052,10 @@ public: virtual void OnTick() { /* update the window every now and then */ - if ((++this->refresh & 0x1F) == 0) this->SetDirty(); + if (--this->refresh != 0) return; + + this->refresh = FORCE_REFRESH_PERIOD; + this->SetDirty(); } virtual void OnScroll(Point delta) |