added initial server structure

common.h

@@ -0,0 +1,18 @@
+#ifndef common_H_
+#define common_H_
+
+// Position structure
+typedef struct
+{
+    float x;
+    float y;
+    float z;
+} playerPosition;
+
+typedef struct
+{
+    playerPosition position;
+    int Socket;
+} communicationData;
+
+#endif

handle_communication/handle_communication.c

@@ -0,0 +1,44 @@
+#include "handle_communication.h";
+#include "../common.h";
+#include <string.h>
+#include <netinet/in.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+
+void handle_communication(void *player_data)
+{
+
+    communicationData *playerData = (communicationData *)player_data;
+
+    struct sockaddr_in client_address;
+    socklen_t c_addrlen = sizeof(client_address);
+
+    //Receive data from the client
+    int Socket_receive = recvfrom(
+        playerData->Socket,
+        &playerData->position, sizeof(playerPosition),
+        0,
+        (const struct sockaddr *)&client_address,
+        c_addrlen);
+
+    if(Socket_receive < 0) {
+    	printf("Error while receiving a package\n");
+    	return;
+    }
+
+    //Send updated position back
+    int Socket_send = sendto(
+        playerData->Socket,
+        &playerData->position,
+        sizeof(playerPosition),
+        0,
+        (const struct sockaddr *)&client_address,
+        c_addrlen);
+
+    if(Socket_send < 0) {
+    	printf("Error while sending a package\n");
+    	return;
+    }
+}

handle_communication/handle_communication.h

@@ -0,0 +1,8 @@
+#ifndef handle_communication_H_
+#define handle_communication_H_
+
+#include "../common.h"
+
+void handle_communication(void *player_data);
+
+#endif

main.c

@@ -0,0 +1,64 @@
+#include <stdio.h>
+#include <string.h>
+#include <netinet/in.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <pthread.h>
+#include <sys/types.h>
+#include <limits.h>
+
+#include "common.h"
+#include "handle_communication/handle_communication.h"
+
+#define PORT 8080
+
+int main()
+{
+    // Players' positions
+    playerPosition player_one_position;
+    playerPosition player_two_position;
+
+    //Threads
+    pthread_t thread1, thread2;
+
+    /* Defining players' address structures */
+    struct sockaddr_in address_server;
+
+    communicationData com_data_playerOne;
+    communicationData com_data_playerTwo;
+
+    // Create a socket for communication
+    int Socket = socket(PF_INET, SOCK_DGRAM, 0);
+
+    if(Socket < 0) {
+     	printf("Error while creating a socket\n");
+     	return -1;
+     }
+
+    /* Setting the server structures */
+    address_server.sin_port = PORT;
+    address_server.sin_family = AF_INET;
+    address_server.sin_addr.s_addr = htonl(INADDR_ANY);
+
+    //Bind it to the address
+    int Socket_bind = bind(
+        Socket,
+        (const struct sockaddr *)&address_server,
+        sizeof(address_server));
+
+    if(Socket_bind < 0) {
+    	printf("Error while binding a socket\n");
+    	return -1;
+    }
+
+    com_data_playerOne.position = player_one_position;
+    com_data_playerTwo.position = player_two_position;
+
+    com_data_playerOne.Socket = Socket;
+    com_data_playerTwo.Socket = Socket;
+
+    int thread_desc_one = pthread_create(&thread1, NULL, handle_communication, (void *)&com_data_playerOne);
+    int thread_desc_two = pthread_create(&thread2, NULL, handle_communication, (void *)&com_data_playerTwo);
+}