Worked on further implementation of game mode selection.

I added code to display a help text after the user selects a mode. Currently,
this text is only displayed in single player mode. Additionally, I added a rudimentary
'form' to input IP address and port, if the user selects server mode.

main.cpp

@@ -33,6 +33,7 @@
 #include "includes/server.hpp"
 #include "includes/exception_consts.hpp"
 #include "includes/serialization.h"
+#include "includes/timer.h"
 
 /* Global variables used to instantiate structs */
 const int WIDTH = 1500;
@@ -235,9 +236,9 @@ int main(int argc, char** argv) {
 
 	/* Set variables to position objects on screen */
 	int selected_item = 0; 	// variable to hold the index of the selected item
-	char* game_mode_txt = "Select Game Mode"; // Text to display
+	char* text_to_display = "Select Game Mode"; // Text to display
 	/* Size of the label, drop down box and button */
-	Vector2 label_size = MeasureTextEx(GetFontDefault(), game_mode_txt, font_size, font_spacing); // Set the size based on the width of the string to print, the font size and the text spacing. I added 1 to font_size and font_spacing, to account for any possible rounding errors, since the function expects floats.
+	Vector2 label_size = MeasureTextEx(GetFontDefault(), text_to_display, font_size, font_spacing); // Set the size based on the width of the string to print, the font size and the text spacing. I added 1 to font_size and font_spacing, to account for any possible rounding errors, since the function expects floats.
 	Vector2 box_size = (Vector2){label_size.x, HEIGHT / 20};
 	bool is_being_edited = false; // Indicates whether the drop-down menu is being 'edited' i.e. whether an option is being selected
 	bool button_pressed = false; // Indicates whether the submit button has been pressed
@@ -245,9 +246,10 @@ int main(int argc, char** argv) {
 	while (button_pressed == false) {
 		BeginDrawing();
 			ClearBackground(BLACK);
-		GuiLabel((Rectangle){(WIDTH/2)-(label_size.x/2), (HEIGHT/8), label_size.x, label_size.y}, game_mode_txt);
+			GuiLabel((Rectangle){(WIDTH/2)-(label_size.x/2), (HEIGHT/8), label_size.x, label_size.y}, text_to_display); // Label to display text on top
+
 			if (is_being_edited) {
-			GuiLock();
+				GuiLock(); // If the drop-down menu is being 'edited', we need to prevent the user from modifying any other aspect of the UI
 			}
 
 			/* Button that allows user to proceed */
@@ -258,13 +260,55 @@ int main(int argc, char** argv) {
 				is_being_edited = !is_being_edited; // If the dropdown menu was selected, then it is being edited (or not being edited, if it previously was).
 			}
 			
-//		printf("%d\n", selected_item);	
 			GuiUnlock();
 		EndDrawing();
 	}
 	
+	/* Single player mode */
+	if (selected_item == M_SINGLE) {	
+		GuiSetStyle(DEFAULT, TEXT_WRAP_MODE, TEXT_WRAP_WORD); // Enable text wrapping so that the long text, displayed below, will be wrapped
+		BeginDrawing();
+			ClearBackground(BLACK);
+			GuiLabel((Rectangle){(WIDTH/2)-(WIDTH/8), (HEIGHT/2)-(HEIGHT/8), WIDTH/4, HEIGHT/4}, "W and S control left paddle, Up and Down arrow keys control right paddle. Good luck!");
+		EndDrawing();
+		Timer timer = timer_init(5);
+		while (!timer_done(timer));
+	}
+	
+	/* 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* port_text = (char *)calloc(20, sizeof(char)); // Holds input of port text box
+		char* ip_label = "Local IP address";
+		char* port_label = "Port number (1024 - 65535)";
+		int port_label_x_size = MeasureTextEx(GetFontDefault(), port_label, font_size, font_spacing).x; // Custom size for port label, because it's long
+		bool editing_ip = false; // Indicates whether the IP address text box is being edited
+		bool editing_port = false; // Indicates whether the port text box is being edited
+		while (button_pressed == false) {
+			BeginDrawing();
+				ClearBackground(BLACK);
+				/* Label and text box for IP address */
+				GuiLabel((Rectangle){(WIDTH/2)-(label_size.x/2), (HEIGHT/2) - (HEIGHT/6) - label_size.y - 10, label_size.x, label_size.y}, ip_label); // Label to display text on top
+				/* The reason this if statement exists, is largely the same as the reasoning for the drop-down menu. We want to make the text box editable 
+				if it has been clicked. If it is already editable, we want to make it read-only if the user clicks outside the box. This functionality
+				is mostly handled in the GuiTextBox function. If the text box is in edit mode, this function returns nonzero if the user clicks INSIDE
+				the box. If the text box is in editable mode, this function returns nonzero if the user clicks OUTSIDE the box. */
+				if (GuiTextBox((Rectangle){(WIDTH/2) - (box_size.x/2), (HEIGHT/2) - (HEIGHT/6), box_size.x, box_size.y}, ip_text, 100, editing_ip)) {
+					editing_ip = !editing_ip;
+				}
+				
+				/* Label and text box for port. See above for explanation of if statement. */
+				GuiLabel((Rectangle){(WIDTH/2)-(label_size.x/2), (HEIGHT/2) - label_size.y, port_label_x_size }, port_label); // Label to display text on top
+				if (GuiTextBox((Rectangle){(WIDTH/2) - (box_size.x/2), (HEIGHT/2), box_size.x, box_size.y}, port_text, 100, editing_port)) {
+					editing_port = !editing_port;
+				}
 			
+				button_pressed = GuiButton((Rectangle){(WIDTH/2) - (box_size.x/2), (HEIGHT/2) + (HEIGHT/6), box_size.x, box_size.y}, "Start Server");
 				
+			EndDrawing();
+		}
+	}
 
 	/* Variable to store the response given by the other player */
 	std::string response;