Added vector renderer util, broadcast packets now reaching agents

agent.cpp

@@ -18,7 +18,9 @@ struct AgentList {
 } agents[MAX_AGENTS];
 int num_agents = 0; 
 
-// Process an incoming packet that lists the other agents in the area
+//
+// Process an incoming spaceserver packet telling you about other nearby agents 
+//
 void update_agents(char * data, int length) {
     std::string packet(data, length);
     //std::string packet("127.0.0.1,");
@@ -39,6 +41,9 @@ void update_agents(char * data, int length) {
     }
 }
 
+//
+//  Look for an agent by it's IP number, add if it does not exist in local list 
+//
 int add_agent(std::string * IP) {
     in_addr_t addr = inet_addr(IP->c_str());
     //std::cout << "Checking for " << IP->c_str() << "  ";
@@ -55,12 +60,14 @@ int add_agent(std::string * IP) {
         num_agents++;
         return 1;
     } else {
-        std::cout << "Max agents reached!\n";
+        std::cout << "Max agents reached fail!\n";
         return 0;
     } 
 }
 
+//
 //  Broadcast data to all the other agents you are aware of, returns 1 for success 
+//
 int broadcast(int handle, char * data, int length) {
     sockaddr_in dest_address;
     dest_address.sin_family = AF_INET;

agent.h

@@ -19,5 +19,6 @@
 
 void update_agents(char * data, int length);
 int add_agent(std::string * IP);
+int broadcast(int handle, char * data, int length);
 
 #endif

interface.xcodeproj/project.pbxproj

@@ -235,6 +235,7 @@
 			isa = PBXProject;
 			attributes = {
 				LastUpgradeCheck = 0430;
+				ORGANIZATIONNAME = "Rosedale Lab";
 			};
 			buildConfigurationList = 1DEB923508733DC60010E9CD /* Build configuration list for PBXProject "interface" */;
 			compatibilityVersion = "Xcode 3.2";

main.cpp

@@ -455,6 +455,10 @@ void update_pos(float frametime)
     //  Update head and manipulator objects with object with current location
     myHead.setPos(glm::vec3(location[0], location[1], location[2]));
     balls.updateHand(myHead.getPos() + myHand.getPos(), glm::vec3(0,0,0), myHand.getRadius());
+    
+    //  Update all this stuff to any agents that are nearby and need to see it!
+    char test[] = "BXXX";
+    broadcast(UDP_socket, test, strlen(test));
 }
 
 void display(void)
@@ -508,6 +512,9 @@ void display(void)
         //  Render the world box 
         if (!display_head) render_world_box();
     
+        glm::vec3 test(0.5, 0.5, 0.5); 
+        render_vector(&test);
+
     glPopMatrix();
 
     
@@ -630,6 +637,9 @@ void key(unsigned char k, int x, int y)
     }
 }
 
+// 
+//  Check for and process incoming network packets 
+// 
 void read_network()
 {
     //  Receive packets 
@@ -640,19 +650,29 @@ void read_network()
         bytescount += bytes_recvd;
         //  If packet is a Mouse data packet, copy it over 
         if (incoming_packet[0] == 'M') {
+            // 
+            //  mouse location packet 
+            //
             sscanf(incoming_packet, "M %d %d", &target_x, &target_y);
             target_display = 1;
             printf("X = %d Y = %d\n", target_x, target_y);
         } else if (incoming_packet[0] == 'P') {
+            // 
             //  Ping packet - check time and record
+            //
             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);
             update_agents(&incoming_packet[1], bytes_recvd - 1);
+        } else if (incoming_packet[0] == 'B') {
+            //
+            //  Broadcast packet from another agent 
+            //
+            //std::cout << "Got broadcast from agent\n";
         }
     }
 }

util.cpp

@@ -20,6 +20,44 @@ float randFloat () {
     return (rand()%10000)/10000.f;
 }
 
+void render_vector(glm::vec3 * vec)
+{
+    //  Show edge of world 
+    glDisable(GL_LIGHTING);
+    glColor4f(1.0, 1.0, 1.0, 1.0);
+    glLineWidth(1.0);
+    glBegin(GL_LINES);
+    //  Draw axes
+    glColor3f(1,0,0);
+    glVertex3f(-1,0,0);
+    glVertex3f(1,0,0);
+    glColor3f(0,1,0);
+    glVertex3f(0,-1,0);
+    glVertex3f(0, 1, 0);
+    glColor3f(0,0,1);
+    glVertex3f(0,0,-1);
+    glVertex3f(0, 0, 1);
+    // Draw vector
+    glColor3f(1,1,1);
+    glVertex3f(0,0,0);
+    glVertex3f(vec->x, vec->y, vec->z);
+    // Draw marker dots for magnitude    
+    glEnd();
+    float particle_attenuation_quadratic[] =  { 0.0f, 0.0f, 2.0f }; // larger Z = smaller particles
+    glPointParameterfvARB( GL_POINT_DISTANCE_ATTENUATION_ARB, particle_attenuation_quadratic );
+    glEnable(GL_POINT_SMOOTH);
+    glPointSize(10.0);
+    glBegin(GL_POINTS);
+    glColor3f(1,0,0);
+    glVertex3f(vec->x,0,0);
+    glColor3f(0,1,0);
+    glVertex3f(0,vec->y,0);
+    glColor3f(0,0,1);
+    glVertex3f(0,0,vec->z);
+    glEnd();
+
+}
+
 void render_world_box()
 {
     //  Show edge of world 

util.h

@@ -13,6 +13,7 @@
 void outstring(char * string, int length);
 float randFloat();
 void render_world_box();
+void render_vector(glm::vec3 * vec);
 void drawtext(int x, int y, float scale, float rotate, float thick, int mono, char *string, 
               float r=1.0, float g=1.0, float b=1.0);
 void drawvec3(int x, int y, float scale, float rotate, float thick, int mono, glm::vec3 vec,