// Written by Duncan McCreanor, started February 2003.
// duncan.mccreanor@airservicesaustralia.com
//
+// With minor additions be Vivian Meazza, January 2006
+//
// Copyright (C) 2003 Airservices Australia
//
// This program is free software; you can redistribute it and/or
*
******************************************************************/
-#include <stdint.h>
#include <plib/sg.h>
+#include <simgear/compiler.h>
+#include "tiny_xdr.hxx"
-// Message identifiers
-#define CHAT_MSG_ID 1
-#define UNUSABLE_POS_DATA_ID 2
-#define POS_DATA_ID 3
-/* should be a multiple of 8! */
-#define MAX_CALLSIGN_LEN 8
-/** Header for use with all messages sent */
-typedef struct {
-
- /** Message identifier, multiple of 8! */
- uint32_t MsgId;
-
- /** Length of the message inclusive of this header */
- uint32_t iMsgLen;
-
- /** IP address for reply to message (player's receiver address) */
- uint32_t lReplyAddress;
-
- /** Port for replies (player's receiver port) */
- uint32_t iReplyPort;
-
- /** Callsign used by the player */
- char sCallsign[MAX_CALLSIGN_LEN];
-
-} T_MsgHdr;
+// magic value for messages
+const uint32_t MSG_MAGIC = 0x46474653; // "FGFS"
+// protocoll version
+const uint32_t PROTO_VER = 0x00010001; // 1.1
-#define MAX_CHAT_MSG_LEN 48
-/** Chat message */
-typedef struct {
-
- /** Text of chat message */
- char sText[MAX_CHAT_MSG_LEN];
-
-} T_ChatMsg;
+// Message identifiers
+#define CHAT_MSG_ID 1
+#define UNUSABLE_POS_DATA_ID 2
+#define OLD_POS_DATA_ID 3
+#define POS_DATA_ID 4
+#define PROP_MSG_ID 5
+
+// XDR demands 4 byte alignment, but some compilers use8 byte alignment
+// so it's safe to let the overall size of a network message be a
+// multiple of 8!
+#define MAX_CALLSIGN_LEN 8
+#define MAX_CHAT_MSG_LEN 256
+#define MAX_MODEL_NAME_LEN 96
+#define MAX_PROPERTY_LEN 52
-/* should be a multiple of 8! */
-#define MAX_MODEL_NAME_LEN 48
/** Aircraft position message */
-typedef struct {
-
- /** Name of the aircraft model */
- char sModel[MAX_MODEL_NAME_LEN];
-
- /** Position data for the aircraft */
- sgdVec3 PlayerPosition;
- sgQuat PlayerOrientation;
-
-} T_PositionMsg;
-
+typedef xdr_data2_t xdrPosition[3];
+typedef xdr_data_t xdrOrientation[4];
+
+// Header for use with all messages sent
+class T_MsgHdr {
+public:
+ xdr_data_t Magic; // Magic Value
+ xdr_data_t Version; // Protocoll version
+ xdr_data_t MsgId; // Message identifier
+ xdr_data_t MsgLen; // absolute length of message
+ xdr_data_t ReplyAddress; // (player's receiver address
+ xdr_data_t ReplyPort; // player's receiver port
+ char Callsign[MAX_CALLSIGN_LEN]; // Callsign used by the player
+};
+
+// Chat message
+class T_ChatMsg {
+public:
+ char Text[MAX_CHAT_MSG_LEN]; // Text of chat message
+};
+
+// Position message
+class T_PositionMsg {
+public:
+ char Model[MAX_MODEL_NAME_LEN]; // Name of the aircraft model
+ xdr_data_t time; // Time when this packet was generated
+ xdr_data_t timeusec; // Microsecs when this packet was generated
+ xdr_data2_t lat; // Position, orientation, speed
+ xdr_data2_t lon; // ...
+ xdr_data2_t alt; // ...
+ xdr_data2_t hdg; // ...
+ xdr_data2_t roll; // ...
+ xdr_data2_t pitch; // ...
+ xdr_data2_t speedN; // ...
+ xdr_data2_t speedE; // ...
+ xdr_data2_t speedD; // ...
+ xdr_data_t accN; // acceleration N
+ xdr_data_t accE; // acceleration E
+ xdr_data_t accD; // acceleration D
+ xdr_data_t left_aileron; // control positions
+ xdr_data_t right_aileron; // control positions
+ xdr_data_t elevator; // ...
+ xdr_data_t rudder; // ...
+// xdr_data_t rpms[6]; // RPMs of all of the motors
+ xdr_data_t rateH; // Rate of change of heading
+ xdr_data_t rateR; // roll
+ xdr_data_t rateP; // and pitch
+// xdr_data_t dummy; // pad message length
+};
+
+// Property message
+class T_PropertyMsg {
+public:
+ char property[MAX_PROPERTY_LEN]; // the property name
+ xdr_data_t type; // the type
+ xdr_data2_t val; // and value
+// xdr_data2_t dummy; // pad message length
+
+};
#endif
projects / flightgear.git / blobdiff