Function UpdateDisableElrailSettingState

src/elrail.cpp:581–624

}

void UpdateDisableElrailSettingState(bool disable, bool update_vehicles)
{
	/* walk through all train engines */
	for (Engine *e : Engine::IterateType(VEH_TRAIN)) {
		RailVehicleInfo *rv_info = &e->VehInfo<RailVehicleInfo>();
		/* update railtype of engines intended to use elrail */
		if (rv_info->intended_railtypes.Test(RAILTYPE_ELECTRIC)) {
			rv_info->railtypes.Set(RAILTYPE_ELECTRIC, !disable);
			rv_info->railtypes.Set(RAILTYPE_RAIL, disable || rv_info->intended_railtypes.Test(RAILTYPE_RAIL));
		}
	}

	/* when disabling elrails, make sure that all existing trains can run on
	 *  normal rail too */
	if (disable) {
		for (Train *t : Train::Iterate()) {
			if (t->railtypes.Test(RAILTYPE_ELECTRIC)) {
				/* this railroad vehicle is now compatible only with elrail,
				 *  so add there also normal rail compatibility */
				t->compatible_railtypes.Set(RAILTYPE_RAIL);
				t->railtypes.Reset(RAILTYPE_ELECTRIC);
				t->railtypes.Set(RAILTYPE_RAIL);
				t->flags.Set(VehicleRailFlag::AllowedOnNormalRail);
			}
		}
	}

	/* Fix the total power and acceleration for trains */
	if (update_vehicles) {
		for (Train *t : Train::Iterate()) {
			/* power and acceleration is cached only for front engines */
			if (t->IsFrontEngine()) {
				t->ConsistChanged(CCF_TRACK);
			}
		}
	}

	for (Company *c : Company::Iterate()) c->avail_railtypes = GetCompanyRailTypes(c->index);

	/* This resets the _last_built_railtype, which will be invalid for electric
	 * rails. It may have unintended consequences if that function is ever
	 * extended, though. */
	ReinitGuiAfterToggleElrail(disable);
}