(svn r22023) -Fix: verify we can allocate a CargoPacket and CargoPayment before we actually try to do so

-Codechange: increase the limit of number of CargoPayments to match the limit of Vehicles (Rubidium)

src/cargopacket.cpp

@@ -88,10 +88,12 @@ CargoPacket::CargoPacket(uint16 count, byte days_in_transit, StationID source, T
 /**
  * Split this packet in two and return the split off part.
  * @param new_size Size of the remaining part.
- * @return Split off part.
+ * @return Split off part, or NULL if no packet could be allocated!
  */
 FORCEINLINE CargoPacket *CargoPacket::Split(uint new_size)
 {
+	if (!CargoPacket::CanAllocateItem()) return NULL;
+
 	Money fs = this->feeder_share * new_size / static_cast<uint>(this->count);
 	CargoPacket *cp_new = new CargoPacket(new_size, this->days_in_transit, this->source, this->source_xy, this->loaded_at_xy, fs, this->source_type, this->source_id);
 	this->feeder_share -= fs;
@@ -315,6 +317,9 @@ bool CargoList<Tinst>::MoveTo(Tother_inst *dest, uint max_move, MoveToAction mta
 			/* But... the rest needs package splitting. */
 			CargoPacket *cp_new = cp->Split(max_move);
 
+			/* We could not allocate a CargoPacket? Is the map that full? */
+			if (cp_new == NULL) return false;
+
 			static_cast<Tinst *>(this)->RemoveFromCache(cp_new); // this reflects the changes in cp.
 
 			if (mta == MTA_TRANSFER) {

src/economy.cpp

@@ -1093,6 +1093,10 @@ void PrepareUnload(Vehicle *front_v)
 	}
 
 	assert(front_v->cargo_payment == NULL);
+	/* One CargoPayment per vehicle and the vehicle limit equals the
+	 * limit in number of CargoPayments. Can't go wrong. */
+	assert_compile(CargoPaymentPool::MAX_SIZE == VehiclePool::MAX_SIZE);
+	assert(CargoPayment::CanAllocateItem());
 	front_v->cargo_payment = new CargoPayment(front_v);
 }
 

src/economy_base.h

@@ -15,8 +15,8 @@
 #include "cargopacket.h"
 #include "company_type.h"
 
-/** Type of pool to store cargo payments in. */
+/** Type of pool to store cargo payments in; little over 1 million. */
-typedef Pool<CargoPayment, CargoPaymentID, 512, 64000> CargoPaymentPool;
+typedef Pool<CargoPayment, CargoPaymentID, 512, 0xFF000> CargoPaymentPool;
 /** The actual pool to store cargo payments in. */
 extern CargoPaymentPool _cargo_payment_pool;
 

src/station_cmd.cpp

@@ -3165,6 +3165,10 @@ void ModifyStationRatingAround(TileIndex tile, Owner owner, int amount, uint rad
 
 static uint UpdateStationWaiting(Station *st, CargoID type, uint amount, SourceType source_type, SourceID source_id)
 {
+	/* We can't allocate a CargoPacket? Then don't do anything
+	 * at all; i.e. just discard the incoming cargo. */
+	if (!CargoPacket::CanAllocateItem()) return 0;
+
 	GoodsEntry &ge = st->goods[type];
 	amount += ge.amount_fract;
 	ge.amount_fract = GB(amount, 0, 8);