Basic packet system done.

src/client/client.c

@@ -50,6 +50,7 @@ errorret_t clientConnect(const clientconnect_t connect) {
   }
 
   CLIENT.type = connect.type;
+  packetQueueInit(&CLIENT.packetQueue);
 
   switch(connect.type) {
     case CLIENT_TYPE_NETWORKED:
@@ -64,6 +65,38 @@ errorret_t clientConnect(const clientconnect_t connect) {
   return ret;
 }
 
+void clientUpdate() {
+  packet_t packet;
+  int32_t ret;
+  errorret_t err;
+
+  if(CLIENT.state == CLIENT_STATE_DISCONNECTED) return;
+  
+  do {
+    ret = packetQueuePopIn(
+      &CLIENT.packetQueue,
+      &packet
+    );
+
+    if(ret == 0) break;
+
+    if(ret < 0) {
+      clientDisconnect();
+      consolePrint("Failed to pop packet");
+      return;
+    }
+
+    err = packetClientProcess(&packet, &CLIENT);
+    
+    if(err != ERROR_OK) {
+      clientDisconnect();
+      consolePrint("Failed to process packet %s", errorString());
+      errorFlush();
+      return;
+    }
+  } while(true);
+}
+
 void clientDisconnect() {
   if(CLIENT.state == CLIENT_STATE_DISCONNECTED) return;
 

src/client/client.h

@@ -55,6 +55,11 @@ void clientInit();
  */
 errorret_t clientConnect(const clientconnect_t connect);
 
+/**
+ * Updates the client state.
+ */
+void clientUpdate();
+
 /**
  * Disconnects the client from the server.
  */

src/client/networked/networkedclient.c

@@ -18,7 +18,6 @@ errorret_t networkedClientConnect(
   errorret_t err;
   char_t *ip = "127.0.0.1";
 
-
   assertNotNull(client, "Client is NULL");
   assertTrue(client->type == CLIENT_TYPE_NETWORKED, "Client is not networked");
   assertIsMainThread("Client connect must be on main thread");
@@ -328,7 +327,6 @@ void * networkedClientReadThread(void *arg) {
   pthread_cond_signal(&client->networked.cond);
   pthread_mutex_unlock(&client->networked.lock);
 
-  // Main loop
   while(client->state == CLIENT_STATE_CONNECTED) {
     pthread_mutex_lock(&client->networked.readLock);
     
@@ -340,7 +338,10 @@ void * networkedClientReadThread(void *arg) {
       break;
     }
 
-    printf("Received packet type: %d, length: %d\n", packet.type, packet.length);
+    packetQueuePushIn(
+      &client->packetQueue,
+      &packet
+    );
 
     pthread_mutex_unlock(&client->networked.readLock);
   }
@@ -353,7 +354,11 @@ void * networkedClientReadThread(void *arg) {
   pthread_mutex_unlock(&client->networked.lock);
 }
 
-void * networkedClientWriteThread(void *arg) { // Renamed from networkedClientRightThread
+void * networkedClientWriteThread(void *arg) {
+  packet_t packet;
+  int32_t ret;
+  errorret_t err;
+
   assertNotNull(arg, "Write thread argument is NULL");
   assertNotMainThread("Write thread must not be on main thread");
 
@@ -363,13 +368,35 @@ void * networkedClientWriteThread(void *arg) { // Renamed from networkedClientRi
     "Write thread argument is not networked"
   );
 
-  // Perform additional operations
   while(client->state == CLIENT_STATE_CONNECTED) {
-    pthread_mutex_lock(&client->networked.writeLock); // Lock before writing
+    pthread_mutex_lock(&client->networked.writeLock);
 
-    // Add logic for the write thread here
+    ret = packetQueuePopOut(
-    // Example: Writing packets to the client
+      &client->packetQueue,
-    // networkedClientWritePacket(client, &somePacket);
+      &packet
+    );
+    
+    if(ret == 0) {
+      pthread_mutex_unlock(&client->networked.writeLock);
+      continue;
+    }
+
+    if(ret < 0) {
+      consolePrint("Failed to pop packet from queue %s", errorString());
+      errorFlush();
+      client->state = CLIENT_STATE_DISCONNECTING;
+      pthread_mutex_unlock(&client->networked.writeLock);
+      break;
+    }
+
+    err = networkedClientWritePacket(client, &packet);
+    if(err) {
+      consolePrint("Failed to write packet %s", errorString());
+      errorFlush();
+      client->state = CLIENT_STATE_DISCONNECTING;
+      pthread_mutex_unlock(&client->networked.writeLock);
+      break;
+    }
 
     pthread_mutex_unlock(&client->networked.writeLock); // Unlock after writing
   }

src/client/networked/networkedclient.h

@@ -8,7 +8,7 @@
 #pragma once
 #include "error/error.h"
 #include <arpa/inet.h>
-#include "packet/packet.h"
+#include "packet/packetqueue.h"
 
 typedef struct client_s client_t;
 typedef struct clientconnect_s clientconnect_t;

src/main.c

@@ -34,9 +34,14 @@ int32_t main(const int32_t argc, const char **argv) {
 
   entityInit(&GAME.entities[GAME.entityCount++], ENTITY_TYPE_PLAYER);
 
+  float_t lastPing = -1;
+  float_t time = 0;
+
   while(true) {
     inputUpdate();
     consoleUpdate();
+    serverUpdate();
+    clientUpdate();
 
     if(!CONSOLE.open) {
       for(uint32_t i = 0; i < GAME.entityCount; i++) {
@@ -47,8 +52,18 @@ int32_t main(const int32_t argc, const char **argv) {
     
     renderresult_t result = renderDraw();
     if(result != RENDER_OK) break;
-
     if(exitRequested) break;
+
+    time += GetFrameTime();
+    if(time - lastPing > 1.0f) {
+      lastPing = time;
+      
+      if(CLIENT.state != CLIENT_STATE_CONNECTED) continue;
+      packet_t packet;
+      packetPingCreate(&packet);
+      packetQueuePushOut(&CLIENT.packetQueue, &packet);
+      lastPing = time;
+    }
   }
 
   serverDispose();

src/packet/packet.c

@@ -8,6 +8,8 @@
 #include "packet.h"
 #include "assert/assert.h"
 #include "util/memory.h"
+#include "client/client.h"
+#include "server/server.h"
 
 void packetInit(
   packet_t *packet,
@@ -26,4 +28,46 @@ void packetInit(
 
   packet->type = type;
   packet->length = length;
+}
+
+errorret_t packetClientProcess(
+  const packet_t *packet,
+  client_t *client
+) {
+  assertNotNull(packet, "Packet is NULL");
+  assertNotNull(client, "Client is NULL");
+  assertTrue(
+    client->type == CLIENT_TYPE_NETWORKED,
+    "Client is not networked"
+  );
+  assertIsMainThread("Client process must be on main thread");
+
+  switch(packet->type) {
+    case PACKET_TYPE_PING:
+      return packetPingClientProcess(packet, client);
+      
+    default:
+      return error("Unknown packet type %d", packet->type);
+  }
+}
+
+errorret_t packetServerProcess(
+  const packet_t *packet,
+  serverclient_t *client
+) {
+  assertNotNull(packet, "Packet is NULL");
+  assertNotNull(client, "Client is NULL");
+  assertTrue(
+    client->server->type == SERVER_TYPE_NETWORKED,
+    "Server is not networked"
+  );
+  assertIsMainThread("Server client process must be on main thread");
+
+  switch(packet->type) {
+    case PACKET_TYPE_PING:
+      return packetPingServerProcess(packet, client);
+      
+    default:
+      return error("Unknown packet type %d", packet->type);
+  }
 }

src/packet/packet.h

@@ -42,4 +42,30 @@ void packetInit(
   packet_t *packet,
   const packettype_t type,
   const uint32_t length
+);
+
+/**
+ * Processes a packet for a given client. Will auto-decide the correct method to
+ * handle the process
+ * 
+ * @param packet Pointer to the packet structure to process.
+ * @param client Pointer to the client structure.
+ * @return ERROR_OK on success, or an error code on failure.
+ */
+errorret_t packetClientProcess(
+  const packet_t *packet,
+  client_t *client
+);
+
+/**
+ * Processes a packet for a given server client. Will auto-decide the correct
+ * method to handle the process
+ * 
+ * @param packet Pointer to the packet structure to process.
+ * @param client Pointer to the server client structure.
+ * @return ERROR_OK on success, or an error code on failure.
+ */
+errorret_t packetServerProcess(
+  const packet_t *packet,
+  serverclient_t *client
 );

src/packet/packetping.c

@@ -8,19 +8,33 @@
 #include "packet.h"
 #include "util/memory.h"
 #include "assert/assert.h"
+#include "server/server.h"
 
 void packetPingCreate(packet_t *packet) {
   packetInit(packet, PACKET_TYPE_PING, sizeof(packetping_t));
   packet->data.ping.number = GetRandomValue(0, INT32_MAX);
 }
 
-errorret_t packetPingClient(packet_t *packet) {
+errorret_t packetPingClientProcess(
-  assertNotNull(packet, "Packet is NULL");
+  const packet_t *packet,
-  assertTrue(packet->type == PACKET_TYPE_PING, "Packet type is not PING");
+  client_t *client
+) {
+  printf("Client got Pong!\n");
+  return ERROR_OK;
+}
 
+errorret_t packetPingServerProcess(
+  const packet_t *packet,
+  serverclient_t *client
+) {
   if(packet->length != sizeof(packetping_t)) {
     return error("Ping packet length is not %d", sizeof(packetping_t));
   }
 
+  printf("Server got Ping!\n");
+
+  packet_t pong;
+  packetPingCreate(&pong);
+  packetQueuePushOut(&client->packetQueue, &pong);
   return ERROR_OK;
 }

src/packet/packetping.h

@@ -8,6 +8,9 @@
 #pragma once
 #include "error/error.h"
 
+typedef struct client_s client_t;
+typedef struct serverclient_s serverclient_t;
+
 typedef struct {
   int32_t number;
 } packetping_t;
@@ -20,9 +23,25 @@ typedef struct {
 void packetPingCreate(packet_t *packet);
 
 /**
- * Handles a ping packet received FROM a server INTO a client.
+ * Validates a ping packet received FROM a client INTO a server.
  * 
- * @param packet Pointer to the packet structure to handle.
+ * @param packet Pointer to the packet structure to validate.
+ * @param client Pointer to the server client structure.
  * @return ERROR_OK on success, or an error code on failure.
  */
-errorret_t packetPingClient(packet_t *packet);
+errorret_t packetPingClientProcess(
+  const packet_t *packet,
+  client_t *client
+);
+
+/**
+ * Handles a ping packet received FROM a client INTO a server.
+ * 
+ * @param packet Pointer to the packet structure to handle.
+ * @param client Pointer to the server client structure.
+ * @return ERROR_OK on success, or an error code on failure.
+ */
+errorret_t packetPingServerProcess(
+  const packet_t *packet,
+  serverclient_t *client
+);

src/packet/packetqueue.c

@@ -12,52 +12,75 @@
 void packetQueueInit(packetqueue_t *queue) {
   assertNotNull(queue, "Packet queue is NULL");
   memoryZero(queue, sizeof(packetqueue_t));
+  pthread_mutex_init(&queue->lock, NULL);
 }
 
 void packetQueuePushIn(packetqueue_t *queue, const packet_t *packet) {
   assertNotNull(queue, "Packet queue is NULL");
   assertNotNull(packet, "Packet is NULL");
+  pthread_mutex_lock(&queue->lock);
   assertTrue(
     queue->packetsInCount < PACKET_QUEUE_MAX_SIZE, "Inbound packet queue is full"
   );
 
   queue->packetsIn[queue->packetsInCount++] = *packet;
+  pthread_mutex_unlock(&queue->lock);
 }
 
 void packetQueuePushOut(packetqueue_t *queue, const packet_t *packet) {
   assertNotNull(queue, "Packet queue is NULL");
   assertNotNull(packet, "Packet is NULL");
+  pthread_mutex_lock(&queue->lock);
   assertTrue(
     queue->packetsOutCount < PACKET_QUEUE_MAX_SIZE, "Outbound packet queue is full"
   );
 
   queue->packetsOut[queue->packetsOutCount++] = *packet;
+  pthread_mutex_unlock(&queue->lock);
 }
 
-int packetQueuePopIn(packetqueue_t *queue, packet_t *packet) {
+int32_t packetQueuePopIn(packetqueue_t *queue, packet_t *packet) {
   assertNotNull(queue, "Packet queue is NULL");
   assertNotNull(packet, "Packet is NULL");
 
-  if(queue->packetsInCount == 0) return 0;
+  pthread_mutex_lock(&queue->lock);
+  if(queue->packetsInCount == 0) {
+    pthread_mutex_unlock(&queue->lock);
+    return 0;
+  }
 
   *packet = queue->packetsIn[0];
-  for(uint32_t i = 1; i < queue->packetsInCount; i++) {
+  if(queue->packetsInCount > 1) {
-    queue->packetsIn[i - 1] = queue->packetsIn[i];
+    memoryCopy(
+      &queue->packetsIn[0],
+      &queue->packetsIn[1],
+      (queue->packetsInCount - 1) * sizeof(packet_t)
+    );
   }
   queue->packetsInCount--;
+  pthread_mutex_unlock(&queue->lock);
   return 1;
 }
 
-int packetQueuePopOut(packetqueue_t *queue, packet_t *packet) {
+int32_t packetQueuePopOut(packetqueue_t *queue, packet_t *packet) {
   assertNotNull(queue, "Packet queue is NULL");
   assertNotNull(packet, "Packet is NULL");
 
-  if(queue->packetsOutCount == 0) return 0;
+  pthread_mutex_lock(&queue->lock);
+  if(queue->packetsOutCount == 0) {
+    pthread_mutex_unlock(&queue->lock);
+    return 0;
+  }
 
   *packet = queue->packetsOut[0];
-  for(uint32_t i = 1; i < queue->packetsOutCount; i++) {
+  if(queue->packetsOutCount > 1) {
-    queue->packetsOut[i - 1] = queue->packetsOut[i];
+    memoryCopy(
+      &queue->packetsOut[0],
+      &queue->packetsOut[1],
+      (queue->packetsOutCount - 1) * sizeof(packet_t)
+    );
   }
   queue->packetsOutCount--;
+  pthread_mutex_unlock(&queue->lock);
   return 1;
 }

src/packet/packetqueue.h

@@ -7,6 +7,7 @@
 
 #pragma once
 #include "packet/packet.h"
+#include <pthread.h>
 
 #define PACKET_QUEUE_MAX_SIZE 512
 
@@ -15,6 +16,7 @@ typedef struct {
   uint32_t packetsInCount;
   packet_t packetsOut[PACKET_QUEUE_MAX_SIZE];
   uint32_t packetsOutCount;
+  pthread_mutex_t lock;
 } packetqueue_t;
 
 /**
@@ -47,7 +49,7 @@ void packetQueuePushOut(packetqueue_t *queue, const packet_t *packet);
  * @param packet Pointer to the packet to store the popped packet.
  * @return 1 if a packet was popped, 0 otherwise.
  */
-int packetQueuePopIn(packetqueue_t *queue, packet_t *packet);
+int32_t packetQueuePopIn(packetqueue_t *queue, packet_t *packet);
 
 /**
  * Pops a packet from the outbound packet queue.
@@ -56,4 +58,4 @@ int packetQueuePopIn(packetqueue_t *queue, packet_t *packet);
  * @param packet Pointer to the packet to store the popped packet.
  * @return 1 if a packet was popped, 0 otherwise.
  */
-int packetQueuePopOut(packetqueue_t *queue, packet_t *packet);
+int32_t packetQueuePopOut(packetqueue_t *queue, packet_t *packet);

src/server/networked/networkedserverclient.c

@@ -26,7 +26,7 @@ errorret_t networkedServerClientAccept(
   client->networked.socket = accept.networked.socket;
 
   // Set timeout to 8 seconds
-  client->networked.timeout.tv_sec = 8;
+  client->networked.timeout.tv_sec = 4;
   client->networked.timeout.tv_usec = 0;
 
   // Initialize mutexs
@@ -282,7 +282,9 @@ void * networkedServerClientReadThread(void *arg) {
   packetWelcomeCreate(&packet);
   err = networkedServerClientWritePacket(client, &packet);
   if(err != ERROR_OK) {
-    networkedServerClientCloseOnThread(client, "Failed to send welcome message");
+    networkedServerClientCloseOnThread(
+      client, "Failed to send welcome message"
+    );
     return NULL;
   }
 
@@ -305,6 +307,16 @@ void * networkedServerClientReadThread(void *arg) {
   while(client->state == SERVER_CLIENT_STATE_CONNECTED) {
     pthread_mutex_lock(&client->networked.readLock);
 
+    err = networkedServerClientReadPacket(client, &packet);
+    if(err != ERROR_OK) {
+      consolePrint("Failed to read packet %s", errorString());
+      errorFlush();
+      pthread_mutex_unlock(&client->networked.readLock);
+      break;
+    }
+    
+    packetQueuePushIn(&client->packetQueue, &packet);
+
     pthread_mutex_unlock(&client->networked.readLock);
   }
 
@@ -316,6 +328,10 @@ void * networkedServerClientReadThread(void *arg) {
 }
 
 void * networkedServerClientWriteThread(void *arg) {
+  packet_t packet;
+  int32_t ret;
+  errorret_t err;
+
   assertNotNull(arg, "Client is NULL");
   assertNotMainThread("Client thread must not be main thread");
   assertTrue(
@@ -332,6 +348,33 @@ void * networkedServerClientWriteThread(void *arg) {
   while(client->state == SERVER_CLIENT_STATE_CONNECTED) {
     pthread_mutex_lock(&client->networked.writeLock);
 
+    ret = packetQueuePopOut(
+      &client->packetQueue,
+      &packet
+    );
+    
+    if(ret == 0) {
+      pthread_mutex_unlock(&client->networked.writeLock);
+      continue;
+    }
+
+    if(ret < 0) {
+      consolePrint("Failed to pop packet %s", errorString());
+      errorFlush();
+      client->state = SERVER_CLIENT_STATE_DISCONNECTING;
+      pthread_mutex_unlock(&client->networked.writeLock);
+      break;
+    }
+
+    err = networkedServerClientWritePacket(client, &packet);
+    if(err != ERROR_OK) {
+      consolePrint("Failed to write packet %s", errorString());
+      errorFlush();
+      client->state = SERVER_CLIENT_STATE_DISCONNECTING;
+      pthread_mutex_unlock(&client->networked.writeLock);
+      break;
+    }
+
     pthread_mutex_unlock(&client->networked.writeLock);
   }
 

src/server/server.c

@@ -96,6 +96,16 @@ uint8_t serverGetClientCount() {
   return clientCount;
 }
 
+void serverUpdate() {
+  assertIsMainThread("Server update must be on main thread");
+  if(SERVER.state != SERVER_STATE_RUNNING) return;
+
+  // Update all clients
+  for(uint8_t i = 0; i < SERVER_MAX_CLIENTS; i++) {
+    serverClientUpdate(&SERVER.clients[i]);
+  }
+}
+
 void serverStop() {
   assertIsMainThread("Server stop must be on main thread");
   if(SERVER.state == SERVER_STATE_STOPPED) return;

src/server/server.h

@@ -72,6 +72,11 @@ errorret_t serverStart(const serverstart_t start);
  */
 uint8_t serverGetClientCount();
 
+/**
+ * Performs a (main thread) update to process clients on the server.
+ */
+void serverUpdate();
+
 /**
  * Stop the server
  * 

src/server/serverclient.c

@@ -35,6 +35,34 @@ errorret_t serverClientAccept(
   return ret;
 }
 
+void serverClientUpdate(serverclient_t *client) {
+  assertNotNull(client, "Client is NULL");
+  assertIsMainThread("Server client update must be on main thread");
+
+  if(client->state != SERVER_CLIENT_STATE_CONNECTED) return;
+
+  packet_t packet;
+  int32_t ret = 1;
+  
+  // Process packets
+  do {
+    ret = packetQueuePopIn(
+      &client->packetQueue,
+      &packet
+    );
+    
+    if(ret == 0) break;
+
+    if(ret < 0) {
+      serverClientClose(client);
+      consolePrint("Failed to pop packet");
+      return;
+    }
+    
+    packetServerProcess(&packet, client);
+  } while(true);
+}
+
 void serverClientClose(serverclient_t *client) {
   assertNotNull(client, "Client is NULL");
   assertIsMainThread("Server client close must be on main thread");

src/server/serverclient.h

@@ -48,6 +48,14 @@ errorret_t serverClientAccept(
   const serverclientaccept_t accept
 );
 
+/**
+ * Handles the main thread updating of this server client. This is where all
+ * the packets will be handled and processed.
+ * 
+ * @param client Pointer to the server client structure.
+ */
+void serverClientUpdate(serverclient_t *client);
+
 /**
  * Closes the connection to a server client. Waits for the thread to finish.
  *