Architecture

.gitignore

@@ -0,0 +1 @@
+build/

CMakeLists.txt

@@ -0,0 +1,14 @@
+cmake_minimum_required(VERSION 3.22)
+project(Battleship VERSION 0.1.0 LANGUAGES C)
+
+# Binary
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+
+# Libs
+add_library(game_logic STATIC source/game_logic.c)
+add_library(utils STATIC source/utils.c)
+
+# Projects
+add_subdirectory(client)
+add_subdirectory(server)
+

README.md

@@ -40,3 +40,13 @@ cmake ..
 ```
 cmake --build .
 ```
+
+3. Start the program 
+- client:
+```
+./bin/client
+```
+- server:
+```
+./bin/server
+```

client/CMakeLists.txt

@@ -0,0 +1,2 @@
+# Project: Client
+add_executable(client client.c)

client/client.c

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+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <string.h>
+
+#define PORT 8080
+#define SERVER_IP "127.0.0.1" //localhost
+
+int initialize_client() {
+    int sock;
+    struct sockaddr_in server_addr;
+
+    // Create socket
+    if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
+        perror("IC: Socket creation failed");
+        exit(EXIT_FAILURE);
+    }
+
+    // Set server address
+    server_addr.sin_family = AF_INET;
+    server_addr.sin_port = htons(PORT);
+
+    if (inet_pton(AF_INET, SERVER_IP, &server_addr.sin_addr) <= 0) {
+        perror("IC: Invalid address or address not supported");
+        exit(EXIT_FAILURE);
+    }
+
+    // Connect to server
+    if (connect(sock, (struct sockaddr *)&server_addr, sizeof(server_addr)) < 0) {
+        perror("IC: Connection failed");
+        exit(EXIT_FAILURE);
+    }
+
+    return sock;
+}
+
+void communicate(int sock) {
+    char *message = "Hello from client!";
+    char buffer[1024] = {0};
+
+    // Send message to server
+    send(sock, message, strlen(message), 0);
+    printf("Client: Message sent to server: %s\n", message);
+
+    // Receive response from server
+    read(sock, buffer, 1024);
+    printf("Client: Message from server: %s\n", buffer);
+}
+
+int main() {
+    int sock = initialize_client();
+    communicate(sock);
+    close(sock);
+    return 0;
+}

server/CMakeLists.txt

@@ -0,0 +1,2 @@
+# Project: Server
+add_executable(server server.c)

server/server.c

@@ -0,0 +1,71 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <string.h>
+
+#define PORT 8080
+
+int initialize_server() {
+    int server_fd;
+    struct sockaddr_in address;
+    int opt = 1;
+
+    // Create socket
+    if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0) {
+        perror("IS: Socket failed");
+        exit(EXIT_FAILURE);
+    }
+
+    // Set server address
+    address.sin_family = AF_INET;
+    address.sin_addr.s_addr = INADDR_ANY;
+    address.sin_port = htons(PORT);
+
+    // Binds the socket to the address
+    if (bind(server_fd, (struct sockaddr *)&address, sizeof(address)) < 0) {
+        perror("IS: Bind failed");
+        exit(EXIT_FAILURE);
+    }
+
+    // Server starts listening for connections
+    if (listen(server_fd, 3) < 0) {
+        perror("IS: Listen failed");
+        exit(EXIT_FAILURE);
+    }
+
+    return server_fd;
+}
+
+void handle_client(int client_socket) {
+    char buffer[1024] = {0};
+
+    // Read message from client
+    read(client_socket, buffer, 1024);
+    printf("HC: Message from client: %s\n", buffer);
+
+    // Send response to client
+    send(client_socket, "Hello from server", strlen("Hello from server"), 0);
+    printf("HC: Message sent to client\n");
+
+    close(client_socket);
+}
+
+int main() {
+    int server_fd = initialize_server();
+    int new_socket;
+    struct sockaddr_in address;
+    int addrlen = sizeof(address);
+
+    // Accept connection from client
+    if ((new_socket = accept(server_fd, (struct sockaddr *)&address, (socklen_t*)&addrlen)) < 0) {
+        perror("Server: Accept failed");
+        exit(EXIT_FAILURE);
+    }
+
+    handle_client(new_socket);
+
+    close(server_fd);
+    return 0;
+}

source/game_logic.c

@@ -0,0 +1 @@
+//TODO Waffle: implement

source/utils.c

@@ -0,0 +1 @@
+//TODO Adam: is it needed?