Added spaceserver messaging.

main.cpp

@@ -198,6 +198,9 @@ void Timer(int extra)
     
 	glutTimerFunc(1000,Timer,0);
     gettimeofday(&timer_start, NULL);
+    
+    //  Send a message to the spaceserver telling it we are ALIVE 
+    notify_spaceserver(UDP_socket, location[0], location[1], location[2]);
 }
 
 void display_stats(void)
@@ -301,11 +304,6 @@ void terminate () {
     exit(EXIT_SUCCESS);
 }
 
-const float SCALE_SENSORS = 0.3f;
-const float SCALE_X = 2.f;
-const float SCALE_Y = 1.f;
-
-
 void reset_sensors()
 {
     //  
@@ -512,6 +510,7 @@ void display(void)
 
     glPopMatrix();
 
+    
     //  Render 2D overlay:  I/O level bar graphs and text  
     glMatrixMode(GL_PROJECTION);
     glPushMatrix();
@@ -649,7 +648,10 @@ void read_network()
             timeval check; 
             gettimeofday(&check, NULL);
             ping_msecs = (float)diffclock(ping_start, check);
-
+        } else if (incoming_packet[0] == 'S') {
+            //  Message from Spaceserver 
+            std::cout << "Spaceserver: ";
+            outstring(incoming_packet, bytes_recvd);
         }
     }
 }

network.cpp

@@ -11,9 +11,13 @@
 #include "network.h"
  
 
-const int UDP_PORT = 30000; 
+const int UDP_PORT = 30001; 
 const char DESTINATION_IP[] = "127.0.0.1";
 
+//  Location of the spaceserver to talk to 
+const char SPACESERVER_IP[] = "127.0.0.1";
+const int SPACESERVER_PORT = 40000;
+
 //  Implementation of optional delay behavior using a ring buffer
 const int MAX_DELAY_PACKETS = 300;
 char delay_buffer[MAX_PACKET_SIZE*MAX_DELAY_PACKETS];
@@ -22,7 +26,7 @@ int delay_size_received[MAX_DELAY_PACKETS];
 int next_to_receive = 0;
 int next_to_send = 0;
 
-sockaddr_in address, dest_address, from;
+sockaddr_in address, dest_address, spaceserver_address, from;
 socklen_t fromLength = sizeof( from );
 
 int network_init()
@@ -67,7 +71,11 @@ int network_init()
     dest_address.sin_family = AF_INET;
     dest_address.sin_addr.s_addr = inet_addr(DESTINATION_IP);
     dest_address.sin_port = htons( (unsigned short) UDP_PORT );
-    
+
+    spaceserver_address.sin_family = AF_INET;
+    spaceserver_address.sin_addr.s_addr = inet_addr(SPACESERVER_IP);
+    spaceserver_address.sin_port = htons( (unsigned short) SPACESERVER_PORT );
+
     from.sin_family = AF_INET;
     //from.sin_addr.s_addr = htonl(ip_address);
     from.sin_port = htons( (unsigned short) UDP_PORT );
@@ -86,6 +94,22 @@ timeval network_send_ping(int handle) {
     return check; 
 }
 
+int notify_spaceserver(int handle, float x, float y, float z) {
+    char data[100];
+    sprintf(data, "%f,%f,%f", x, y, z);
+    std::cout << "sending: " << data << "\n";
+    int packet_size = strlen(data);
+    int sent_bytes = sendto( handle, (const char*)data, packet_size,
+                            0, (sockaddr*)&spaceserver_address, sizeof(sockaddr_in) );
+    
+    if ( sent_bytes != packet_size )
+    {
+        printf( "failed to send to spaceserver: return value = %d\n", sent_bytes );
+        return false;
+    }
+    return sent_bytes;
+}
+
 int network_send(int handle, char * packet_data, int packet_size)
 {
     int sent_bytes = sendto( handle, (const char*)packet_data, packet_size,

network.h

@@ -22,5 +22,6 @@ int network_init();
 int network_send(int handle, char * packet_data, int packet_size);
 int network_receive(int handle, char * packet_data, int delay /*msecs*/);
 timeval network_send_ping(int handle);
+int notify_spaceserver(int handle, float x, float y, float z);
 
 #endif

util.cpp

@@ -39,6 +39,11 @@ void render_world_box()
     glEnd();
 }
 
+void outstring(char * string, int length) {
+    char out[length];
+    memcpy(out, string, length); 
+    std::cout << out << "\n";
+}
 
 double diffclock(timeval clock1,timeval clock2)
 {

util.h

@@ -10,6 +10,7 @@
 #define interface_util_h
 #include "glm/glm.hpp"
 
+void outstring(char * string, int length);
 float randFloat();
 void render_world_box();
 void drawtext(int x, int y, float scale, float rotate, float thick, int mono, char *string,