//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
#ifndef MPMESSAGES_H
*
******************************************************************/
-#ifdef HAVE_STDINT_H
-# include <stdint.h>
-#elif defined( _MSC_VER ) || defined(__MINGW32__) || defined(sun)
-typedef signed short int16_t;
-typedef signed int int32_t;
-typedef unsigned short uint16_t;
-typedef unsigned int uint32_t;
-#else
-# error "Port me! Platforms that don't have <stdint.h> need to define int8_t, et. al."
-#endif
-#include <plib/sg.h>
-
-// 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;
+#include <vector>
-#define MAX_CHAT_MSG_LEN 48
-/** Chat message */
-typedef struct {
+#include <simgear/compiler.h>
+#include <simgear/props/props.hxx>
+#include <simgear/math/SGMath.hxx>
+#include "tiny_xdr.hxx"
- /** Text of chat message */
- char sText[MAX_CHAT_MSG_LEN];
-
-} T_ChatMsg;
-
-/* 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;
+// magic value for messages
+const uint32_t MSG_MAGIC = 0x46474653; // "FGFS"
+// protocoll version
+const uint32_t PROTO_VER = 0x00010001; // 1.1
+// Message identifiers
+#define CHAT_MSG_ID 1
+#define UNUSABLE_POS_DATA_ID 2
+#define OLD_OLD_POS_DATA_ID 3
+#define OLD_POS_DATA_ID 4
+#define OLD_PROP_MSG_ID 5
+#define RESET_DATA_ID 6
+#define POS_DATA_ID 7
+
+// 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
+
+// Header for use with all messages sent
+struct T_MsgHdr {
+ 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
+struct T_ChatMsg {
+ char Text[MAX_CHAT_MSG_LEN]; // Text of chat message
+};
+
+// Position message
+struct T_PositionMsg {
+ char Model[MAX_MODEL_NAME_LEN]; // Name of the aircraft model
+
+ // Time when this packet was generated
+ xdr_data2_t time;
+ xdr_data2_t lag;
+
+ // position wrt the earth centered frame
+ xdr_data2_t position[3];
+ // orientation wrt the earth centered frame, stored in the angle axis
+ // representation where the angle is coded into the axis length
+ xdr_data_t orientation[3];
+
+ // linear velocity wrt the earth centered frame measured in
+ // the earth centered frame
+ xdr_data_t linearVel[3];
+ // angular velocity wrt the earth centered frame measured in
+ // the earth centered frame
+ xdr_data_t angularVel[3];
+
+ // linear acceleration wrt the earth centered frame measured in
+ // the earth centered frame
+ xdr_data_t linearAccel[3];
+ // angular acceleration wrt the earth centered frame measured in
+ // the earth centered frame
+ xdr_data_t angularAccel[3];
+ // Padding. The alignment is 8 bytes on x86_64 because there are
+ // 8-byte types in the message, so the size should be explicitly
+ // rounded out to a multiple of 8. Of course, it's a bad idea to
+ // put a C struct directly on the wire, but that's a fight for
+ // another day...
+ xdr_data_t pad;
+};
+
+struct FGPropertyData {
+ unsigned id;
+
+ // While the type isn't transmitted, it is needed for the destructor
+ SGPropertyNode::Type type;
+ union {
+ int int_value;
+ float float_value;
+ char* string_value;
+ };
+
+ ~FGPropertyData() {
+ if ((type == SGPropertyNode::STRING) || (type == SGPropertyNode::UNSPECIFIED))
+ {
+ delete [] string_value;
+ }
+ }
+};
+
+
+
+// Position message
+struct FGExternalMotionData {
+ // simulation time when this packet was generated
+ double time;
+ // the artificial lag the client should stay behind the average
+ // simulation time to arrival time diference
+ // FIXME: should be some 'per model' instead of 'per packet' property
+ double lag;
+
+ // position wrt the earth centered frame
+ SGVec3d position;
+ // orientation wrt the earth centered frame
+ SGQuatf orientation;
+
+ // linear velocity wrt the earth centered frame measured in
+ // the earth centered frame
+ SGVec3f linearVel;
+ // angular velocity wrt the earth centered frame measured in
+ // the earth centered frame
+ SGVec3f angularVel;
+
+ // linear acceleration wrt the earth centered frame measured in
+ // the earth centered frame
+ SGVec3f linearAccel;
+ // angular acceleration wrt the earth centered frame measured in
+ // the earth centered frame
+ SGVec3f angularAccel;
+
+ // The set of properties recieved for this timeslot
+ std::vector<FGPropertyData*> properties;
+};
#endif
-
-
projects / flightgear.git / blobdiff