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Avoid aircraft leaving the state machine in the event of a breakdown.

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This can result in airport state machine blocks being left
erroneously occupied, blocking the airport.
This commit is contained in:
Jonathan G Rennison
2016-03-22 22:08:26 +00:00
parent 5b2dc8bcd8
commit 7caebc2a77
1 changed files with 13 additions and 1 deletions
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12
src/aircraft_cmd.cpp
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@@ -1124,11 +1124,23 @@ void FindBreakdownDestination(Aircraft *v)
if(destination != INVALID_STATION) { if(destination != INVALID_STATION) {
if(destination != v->current_order.GetDestination()) { if(destination != v->current_order.GetDestination()) {
v->current_order.MakeGoToDepot(destination, ODTFB_BREAKDOWN); v->current_order.MakeGoToDepot(destination, ODTFB_BREAKDOWN);
if (v->state == FLYING) {
/* Do not change airport if in the middle of another airport's state machine,
* as this can result in the airport being left in a blocked state */
AircraftNextAirportPos_and_Order(v); AircraftNextAirportPos_and_Order(v);
}
} else { } else {
v->current_order.MakeGoToDepot(destination, ODTFB_BREAKDOWN); v->current_order.MakeGoToDepot(destination, ODTFB_BREAKDOWN);
} }
} else { } else {
if (v->state != FLYING && v->targetairport != INVALID_STATION) {
/* Crashing whilst in an airport state machine is inconvenient
* as any blocks would need to then be marked unoccupied.
* Change the breakdown type to a speed reduction. */
v->breakdown_type = BREAKDOWN_AIRCRAFT_SPEED;
v->breakdown_severity = 15; /* very slow */
return;
}
/* If no hangar was found, crash */ /* If no hangar was found, crash */
v->targetairport = INVALID_STATION; v->targetairport = INVALID_STATION;
CrashAirplane(v); CrashAirplane(v);