From 2543158c8e0d105148bc38522fba43aa3428d76a Mon Sep 17 00:00:00 2001
From: dominik <dominik@openttd.org>
Date: Wed, 5 Jan 2005 13:15:27 +0000
Subject: (svn r1385) Fix: [ 1095020 ] When all stations in an aircraft's order
 list are demolished, the plane eventually crashes (running out of fuel)

---
 aircraft_cmd.c | 92 +++++++++++++++++++++++++++++++++++++++++-----------------
 1 file changed, 66 insertions(+), 26 deletions(-)

(limited to 'aircraft_cmd.c')

diff --git a/aircraft_cmd.c b/aircraft_cmd.c
index 37c4e56d3..7da3de8f1 100644
--- a/aircraft_cmd.c
+++ b/aircraft_cmd.c
@@ -18,6 +18,7 @@ static bool AirportHasBlock(Vehicle *v, AirportFTA *current_pos, const AirportFT
 static bool AirportFindFreeTerminal(Vehicle *v, const AirportFTAClass *Airport);
 static bool AirportFindFreeHelipad(Vehicle *v, const AirportFTAClass *Airport);
 static void AirportGoToNextPosition(Vehicle *v, const AirportFTAClass *Airport);
+static void CrashAirplane(Vehicle *v);
 
 static void AircraftNextAirportPos_and_Order(Vehicle *v);
 static byte GetAircraftFlyingAltitude(const Vehicle *v);
@@ -920,9 +921,20 @@ static void HandleCrashedAircraft(Vehicle *v)
 {
 	uint32 r;
 	Station *st;
+	int z;
 
 	v->u.air.crashed_counter++;
 
+	st = DEREF_STATION(v->u.air.targetairport);
+
+	// make aircraft crash down to the ground
+	if ( st->airport_tile==0 && ((v->u.air.crashed_counter % 3) == 0) ) {
+		z = GetSlopeZ(v->x_pos, v->y_pos) + 1;
+		v->z_pos -= 1;
+		if (v->z_pos < z)
+			DoDeleteAircraft(v);
+	}
+
 	if (v->u.air.crashed_counter < 650) {
 		if (CHANCE16R(1,32,r)) {
 			v->direction = (v->direction+_crashed_aircraft_moddir[(r >> 16)&3]) & 7;
@@ -935,7 +947,6 @@ static void HandleCrashedAircraft(Vehicle *v)
 				EV_DEMOLISH);
 		}
 	} else if (v->u.air.crashed_counter >= 10000) {
-		st = DEREF_STATION(v->u.air.targetairport);
 		// remove rubble of crashed airplane
 
 		// clear runway-in on all airports, set by crashing plane
@@ -989,13 +1000,25 @@ static void HandleAircraftSmoke(Vehicle *v)
 	}
 }
 
+// returns true if the vehicle does have valid orders
+// false if none are valid
+static bool CheckForValidOrders(Vehicle *v)
+{
+	int i;
+	for (i = 0; i < v->num_orders; i++) {
+		if( v->schedule_ptr[i].type != OT_DUMMY )
+			return true;
+	}
+	return false;
+}
+
 static void ProcessAircraftOrder(Vehicle *v)
 {
 	Order order;
 
 	// OT_GOTO_DEPOT, OT_LOADING
-	if (v->current_order.type >= OT_GOTO_DEPOT &&
-			v->current_order.type <= OT_LOADING) {
+	if (v->current_order.type == OT_GOTO_DEPOT ||
+			v->current_order.type == OT_LOADING) {
 		if (v->current_order.type != OT_GOTO_DEPOT ||
 				!(v->current_order.flags & OF_UNLOAD))
  			return;
@@ -1031,6 +1054,9 @@ static void ProcessAircraftOrder(Vehicle *v)
 		v->u.air.targetairport = order.station;
 	}
 
+	if ( order.type == OT_DUMMY && !CheckForValidOrders(v))
+		CrashAirplane(v);
+
 	InvalidateVehicleOrderWidget(v);
 }
 
@@ -1067,29 +1093,11 @@ static void HandleAircraftLoading(Vehicle *v, int mode)
 	InvalidateVehicleOrderWidget(v);
 }
 
-static void MaybeCrashAirplane(Vehicle *v)
+static void CrashAirplane(Vehicle *v)
 {
-	Station *st;
-	uint16 prob;
-	int i;
 	uint16 amt;
-
-	st = DEREF_STATION(v->u.air.targetairport);
-
-	//FIXME -- MaybeCrashAirplane -> increase crashing chances of very modern airplanes on smaller than AT_METROPOLITAN airports
-	prob = 0x10000 / 1500;
-	if (st->airport_type == AT_SMALL && (AircraftVehInfo(v->engine_type)->subtype & 2) && !_cheats.no_jetcrash.value) {
-		prob = 0x10000 / 20;
-	}
-
-	if ((uint16)Random() > prob)
-		return;
-
-	// Crash the airplane. Remove all goods stored at the station.
-	for(i=0; i!=NUM_CARGO; i++) {
-		st->goods[i].rating = 1;
-		st->goods[i].waiting_acceptance &= ~0xFFF;
-	}
+	Station *st;
+	StringID newsitem;
 
 	v->vehstatus |= VS_CRASHED;
 	v->u.air.crashed_counter = 0;
@@ -1104,17 +1112,49 @@ static void MaybeCrashAirplane(Vehicle *v)
 
 	v->cargo_count = 0;
 	v->next->cargo_count = 0,
+	st = DEREF_STATION(v->u.air.targetairport);
+	if(st->airport_tile==0) {
+		newsitem = STR_PLANE_CRASH_OUT_OF_FUEL;
+	} else {
+		SetDParam(1, st->index);
+		newsitem = STR_A034_PLANE_CRASH_DIE_IN_FIREBALL;
+	}
 
 	SetDParam(1, st->index);
-	AddNewsItem(STR_A034_PLANE_CRASH_DIE_IN_FIREBALL,
+	AddNewsItem(newsitem,
 		NEWS_FLAGS(NM_THIN, NF_VIEWPORT|NF_VEHICLE, NT_ACCIDENT, 0),
 		v->index,
 		0);
 
-	ModifyStationRatingAround(TILE_FROM_XY(v->x_pos, v->y_pos), v->owner, -160, 30);
 	SndPlayVehicleFx(SND_12_EXPLOSION, v);
 }
 
+static void MaybeCrashAirplane(Vehicle *v)
+{
+	Station *st;
+	uint16 prob;
+	int i;
+
+	st = DEREF_STATION(v->u.air.targetairport);
+
+	//FIXME -- MaybeCrashAirplane -> increase crashing chances of very modern airplanes on smaller than AT_METROPOLITAN airports
+	prob = 0x10000 / 1500;
+	if (st->airport_type == AT_SMALL && (AircraftVehInfo(v->engine_type)->subtype & 2) && !_cheats.no_jetcrash.value) {
+		prob = 0x10000 / 20;
+	}
+
+	if ((uint16)Random() > prob)
+		return;
+
+	// Crash the airplane. Remove all goods stored at the station.
+	for(i=0; i!=NUM_CARGO; i++) {
+		st->goods[i].rating = 1;
+		st->goods[i].waiting_acceptance &= ~0xFFF;
+	}
+
+	CrashAirplane(v);
+}
+
 // we've landed and just arrived at a terminal
 static void AircraftEntersTerminal(Vehicle *v)
 {
-- 
cgit v1.2.3-54-g00ecf