--- a/src/ai/api/ai_cargo.hpp	Mon Mar 19 00:19:42 2007 +0000
+++ b/src/ai/api/ai_cargo.hpp	Mon Mar 19 10:08:18 2007 +0000
@@ -13,6 +13,13 @@
 class AICargo : public AIObject {
 public:
 	/**
+	 * Checks whether the given cargo type is valid.
+	 * @param cargo_type the cargo to check.
+	 * @return true if and only if the cargo type is valid.
+	 */
+	bool IsValidCargo(CargoID cargo_type);
+
+	/**
 	 * Gets the string representation of the cargo label.
 	 * @param cargo_type to get the string representation of.
 	 * @return the cargo label.
@@ -43,6 +50,7 @@
 	DefSQClass <AICargo> SQAICargo("AICargo");
 	SQAICargo.PreRegister(engine);
 	SQAICargo.AddConstructor(engine);
+	SQAICargo.DefSQFunction(engine, &AICargo::IsValidCargo,   "IsValidCargo");
 	SQAICargo.DefSQFunction(engine, &AICargo::GetCargoLabel,  "GetCargoLabel");
 	SQAICargo.DefSQFunction(engine, &AICargo::IsFreight,      "IsFreight");
 	SQAICargo.DefSQFunction(engine, &AICargo::GetCargoIncome, "GetCargoIncome");