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-rw-r--r--src/settings.cpp6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/settings.cpp b/src/settings.cpp
index 8a091816f..a136c3d75 100644
--- a/src/settings.cpp
+++ b/src/settings.cpp
@@ -58,6 +58,7 @@
#include "settings_func.h"
#include "ini_type.h"
#include "ai/ai_config.hpp"
+#include "ai/ai.hpp"
#include "newgrf.h"
#include "ship.h"
#include "company_base.h"
@@ -851,6 +852,11 @@ static bool DifficultyChange(int32)
_settings_game.difficulty.diff_level = 3;
}
+ if (((_game_mode == GM_MENU) ? _settings_newgame.difficulty : _settings_game.difficulty).max_no_competitors != 0 &&
+ AI::GetInfoList()->size() == 0 && (!_networking || _network_server)) {
+ ShowErrorMessage(STR_WARNING_NO_SUITABLE_AI, INVALID_STRING_ID, 0, 0, true);
+ }
+
/* If we are a network-client, update the difficult setting (if it is open).
* Use this instead of just dirtying the window because we need to load in
* the new difficulty settings */