(svn r15875) -Add: AIBridge::GetBridgeID() so AIs can get the type of bridge that are already build.

src/ai/api/ai_bridge.cpp

@@ -23,6 +23,12 @@
 	return ::IsBridgeTile(tile);
 }
 
+/* static */ BridgeID AIBridge::GetBridgeID(TileIndex tile)
+{
+	if (!IsBridgeTile(tile)) return -1;
+	return (BridgeID)::GetBridgeType(tile);
+}
+
 static void _DoCommandReturnBuildBridge2(class AIInstance *instance)
 {
 	if (!AIBridge::_BuildBridgeRoad2()) {

src/ai/api/ai_bridge.hpp

@@ -51,6 +51,14 @@ public:
 	 */
 	static bool IsBridgeTile(TileIndex tile);
 
+	/**
+	 * Get the BridgeID of a bridge at a given tile.
+	 * @param tile The tile to get the BridgeID from.
+	 * @pre IsBridgeTile(tile).
+	 * @return The BridgeID from the bridge at tile 'tile'.
+	 */
+	static BridgeID GetBridgeID(TileIndex tile);
+
 	/**
 	 * Get the name of a bridge.
 	 * @param bridge_id The bridge to get the name of.

src/ai/api/ai_bridge.hpp.sq

@@ -36,6 +36,7 @@ void SQAIBridge_Register(Squirrel *engine) {
 
 	SQAIBridge.DefSQStaticMethod(engine, &AIBridge::IsValidBridge,     "IsValidBridge",     2, ".i");
 	SQAIBridge.DefSQStaticMethod(engine, &AIBridge::IsBridgeTile,      "IsBridgeTile",      2, ".i");
+	SQAIBridge.DefSQStaticMethod(engine, &AIBridge::GetBridgeID,       "GetBridgeID",       2, ".i");
 	SQAIBridge.DefSQStaticMethod(engine, &AIBridge::GetName,           "GetName",           2, ".i");
 	SQAIBridge.DefSQStaticMethod(engine, &AIBridge::GetMaxSpeed,       "GetMaxSpeed",       2, ".i");
 	SQAIBridge.DefSQStaticMethod(engine, &AIBridge::GetPrice,          "GetPrice",          3, ".ii");