diff options
author | Darkvater <Darkvater@openttd.org> | 2007-01-04 17:23:55 +0000 |
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committer | Darkvater <Darkvater@openttd.org> | 2007-01-04 17:23:55 +0000 |
commit | ffa7673aaa867e2cdafdff968f1b7196c030ce36 (patch) | |
tree | b2d5f3705a98db7f28fb1319057c4745bf9349f4 /src | |
parent | 81235fc16b6b3151d51317c00646d70b801be0ec (diff) | |
download | openttd-ffa7673aaa867e2cdafdff968f1b7196c030ce36.tar.xz |
(svn r7823) -Fix (r7384 / r7368 / r3757 / r7388): News windows could still cause crashes because
DeleteVehicleNews shuffles around _news_items which can wreak havoc with the NewsItem*
of a currently open news window. While here also correctly update _current_news and
_forced_news for the same reasons. Should really work now.
Diffstat (limited to 'src')
-rw-r--r-- | src/news_gui.c | 39 |
1 files changed, 29 insertions, 10 deletions
diff --git a/src/news_gui.c b/src/news_gui.c index 7400ac1e4..77098744d 100644 --- a/src/news_gui.c +++ b/src/news_gui.c @@ -287,6 +287,9 @@ void AddNewsItem(StringID string, uint32 flags, uint data_a, uint data_b) _oldest_news = increaseIndex(_oldest_news); } + /*DEBUG(misc, 0) ("+cur %3d, old %2d, lat %3d, for %3d, tot %2d", + _current_news, _oldest_news, _latest_news, _forced_news, _total_news); */ + { /* Add news to _latest_news */ Window *w; NewsItem *ni = &_news_items[_latest_news]; @@ -314,7 +317,7 @@ void AddNewsItem(StringID string, uint32 flags, uint data_a, uint data_b) } -// don't show item if it's older than x days +/* Don't show item if it's older than x days, corresponds with NewsType in news.h */ static const byte _news_items_age[] = {60, 60, 90, 60, 90, 30, 150, 30, 90, 180}; static const Widget _news_type13_widgets[] = { @@ -438,6 +441,10 @@ static void ShowNewspaper(NewsItem *ni) break; } } + + /*DEBUG(misc, 0) (" cur %3d, old %2d, lat %3d, for %3d, tot %2d", + _current_news, _oldest_news, _latest_news, _forced_news, _total_news); */ + WP(w, news_d).ni = &_news_items[_forced_news == INVALID_NEWS ? _current_news : _forced_news]; w->flags4 |= WF_DISABLE_VP_SCROLL; } @@ -885,9 +892,9 @@ void DeleteVehicleNews(VehicleID vid, StringID news) if (_forced_news == n || _current_news == n) MoveToNextItem(); _total_news--; - // If this is the last news item, invalidate _latest_news - if (_latest_news == _oldest_news) { - assert(_total_news == 0); + /* If this is the last news item, invalidate _latest_news */ + if (_total_news == 0) { + assert(_latest_news == _oldest_news); _latest_news = INVALID_NEWS; } @@ -898,18 +905,30 @@ void DeleteVehicleNews(VehicleID vid, StringID news) * [------O--------n-----L--] * will become (change dramatized to make clear) * [---------O-----------L--] - * Also update the current news item in case it was pointing to the - * oldest, now shifted item */ + * We also need an update of the current, forced and visible (open window) + * news's as this shifting could change the items they were pointing to */ if (_total_news != 0) { - NewsID i; - for (i = n; i != _oldest_news; i = decreaseIndex(i)) { + NewsID i, visible_news; + w = FindWindowById(WC_NEWS_WINDOW, 0); + visible_news = (w != NULL) ? (NewsID)(WP(w, news_d).ni - _news_items) : INVALID_NEWS; + + i = n; + do { _news_items[i] = _news_items[decreaseIndex(i)]; - } - if (_current_news == _oldest_news) _current_news = increaseIndex(_current_news); + if (i == _current_news) _current_news = increaseIndex(_current_news); + if (i == _forced_news) _forced_news = increaseIndex(_forced_news); + if (i == visible_news) WP(w, news_d).ni = &_news_items[increaseIndex(visible_news)]; + + i = decreaseIndex(i); + } while (i != _oldest_news); + _oldest_news = increaseIndex(_oldest_news); } + /*DEBUG(misc, 0) ("-cur %3d, old %2d, lat %3d, for %3d, tot %2d", + _current_news, _oldest_news, _latest_news, _forced_news, _total_news); */ + w = FindWindowById(WC_MESSAGE_HISTORY, 0); if (w != NULL) { SetWindowDirty(w); |