Started working on better error handling, by throwing exceptions and displaying error messages in the GUI

check_input.cpp

@@ -1,38 +1,32 @@
 #include <iostream>
-#include "includes/easysock.hpp"
+#include "includes/easysock.h"
 #include "includes/connect_code.hpp"
 #include "includes/server.hpp"
 #include "includes/client.hpp"
 #include "includes/check_input.hpp"
 #include "includes/raygui/raygui.h"
 #include "includes/exception_consts.hpp"
+#include "includes/raygui_helpers.hpp"
 #include "includes/timer.h"
 
-/* Display the given text, centered on the screen, as a label */
-void display_text_centered(std::string to_disp) {
-	const char* to_disp_cstr = to_disp.c_str();
-	Vector2 label_size = MeasureTextEx(GetFontDefault(), to_disp_cstr, GuiGetStyle(DEFAULT, TEXT_SIZE)+1, GuiGetStyle(DEFAULT, TEXT_SPACING)+1); // The '+1' is there to account for any rounding errors
-	
-	BeginDrawing();
-		ClearBackground(BLACK);
-		GuiLabel(Rectangle{(GetScreenWidth()/2) - (label_size.x/2), (GetScreenHeight()/2) - (label_size.y/2), label_size.x, label_size.y}, to_disp_cstr);
-	EndDrawing();	
-	return;
-}
-
 GameType check_server(char* ip_text, char* port_text) {
 	GameType type;
 	std::string addr;
 	uint16_t port;
 
+	/* Check if IP address and port are in valid forms */
+	if (check_ip_ver(ip_text) < 0) {
+		throw std::invalid_argument("Invalid IP address");
+	}
+	if (port_to_num(port_text) < 0) {
+		throw std::invalid_argument("Invalid port");
+	}
+
+	/* From here on, we assume that the IP and port are valid */
+
 	addr = std::string(ip_text);
 	port = std::stoi(std::string(port_text));
 
-	/* Check if IP is valid */
-	if (check_ip_ver(addr.data()) < 0) {
-		throw EXCEPT_INVALIDIP;
-	}
-
 	std::string code = connect_code::encode(addr, std::to_string(port));
 
 	/* Create server socket and wait for client to connect */

main.cpp

@@ -26,11 +26,12 @@
 #include "includes/paddle.hpp"
 #include "includes/ball.hpp"
 #include "includes/connect_code.hpp"
-#include "includes/easysock.hpp"
 #include "includes/client.hpp"
 #include "includes/server.hpp"
 #include "includes/exception_consts.hpp"
 #include "includes/check_input.hpp"
+#include "includes/raygui_helpers.hpp"
+#include "includes/easysock.h"
 #include "includes/serialization.h"
 #include "includes/timer.h"
 
@@ -272,7 +273,7 @@ int main(int argc, char** argv) {
 		/* Server mode, ask user to input IP address and port */
 		if (selected_item == M_SERVER) {
 			button_pressed = false; // Whether submit button is pressed
-			char* ip_text = (char *)calloc(100, sizeof(char)); // Holds input of IP text box
+			char* ip_text = (char *)calloc(150, sizeof(char)); // Holds input of IP text box
 			char* port_text = (char *)calloc(20, sizeof(char)); // Holds input of port text box
 			const char* ip_label = "Local IP address";
 			const char* port_label = "Port number (1024 - 65535)";
@@ -303,14 +304,22 @@ int main(int argc, char** argv) {
 				EndDrawing();
 			}
 			
-			type = check_server(ip_text, port_text);
+			try {
+				type = check_server(ip_text, port_text);
+			} catch (std::invalid_argument& inv) {
+				display_text_centered(std::string(inv.what()) + "\nClosing game...");
+				Timer timer = timer_init(2); // Wait for two seconds
+				while (!timer_done(timer));
+				CloseWindow(); // Close and exit
+				return -1;
+			}
 			free(ip_text);
 			free(port_text);
 		}
 		
 		if (selected_item == M_CLIENT) {
 			button_pressed = false; // Whether submit button is pressed
-			char* code_text = (char *)calloc(100, sizeof(char)); // Holds the connect code
+			char* code_text = (char *)calloc(150, sizeof(char)); // Holds the connect code
 			const char* code_label = "Enter code:";
 			bool editing_code = false; // Indicates whether the port text box is being edited
 			while (button_pressed == false || ((strlen(code_text) == 0))) {