diff options
Diffstat (limited to 'src/engine.cpp')
| -rw-r--r-- | src/engine.cpp | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/engine.cpp b/src/engine.cpp index fa9b1dcff..b09332c0f 100644 --- a/src/engine.cpp +++ b/src/engine.cpp @@ -30,6 +30,7 @@ #include "company_base.h" #include "vehicle_func.h" #include "articulated_vehicles.h" +#include "error.h" #include "table/strings.h" #include "table/engines.h" @@ -1098,3 +1099,25 @@ bool IsEngineRefittable(EngineID engine) CargoID default_cargo = e->GetDefaultCargoType(); return default_cargo != CT_INVALID && ei->refit_mask != 1U << default_cargo; } + +/** + * Check for engines that have an appropriate availability. + */ +void CheckEngines() +{ + const Engine *e; + Date min_date = INT32_MAX; + + FOR_ALL_ENGINES(e) { + if (!e->IsEnabled()) continue; + + /* We have an available engine... yay! */ + if (e->flags & ENGINE_AVAILABLE && e->company_avail != 0) return; + + /* Okay, try to find the earliest date. */ + min_date = min(min_date, e->info.base_intro); + } + + SetDParam(0, min_date); + ShowErrorMessage(STR_ERROR_NO_VEHICLES_AVAILABLE, STR_ERROR_NO_VEHICLES_AVAILABLE_EXPLANATION, WL_WARNING); +} |