upd: error notification gui

src/gui/windows/_windowlist.zig

@@ -20,6 +20,7 @@ pub const invite = @import("invite.zig");
 pub const main = @import("main.zig");
 pub const manage_players = @import("manage_players.zig");
 pub const multiplayer = @import("multiplayer.zig");
+pub const notification = @import("notification.zig");
 pub const pause = @import("pause.zig");
 pub const pause_gear = @import("pause_gear.zig");
 pub const performance_graph = @import("performance_graph.zig");

src/gui/windows/multiplayer.zig

@@ -56,17 +56,28 @@ fn join(_: usize) void {
 		ipAddress = "";
 	}
 	if(connection) |_connection| {
+		if (ipAddressEntry.currentString.items.len == 0) {
+			std.log.err("IP address cannot be empty", .{});
+			main.gui.windowlist.notification.raiseNotification("IP address cannot be empty");
+			return;
+		}
 		_connection.world = &main.game.testWorld;
 		main.globalAllocator.free(settings.lastUsedIPAddress);
 		settings.lastUsedIPAddress = main.globalAllocator.dupe(u8, ipAddressEntry.currentString.items);
 		settings.save();
 		main.game.world = &main.game.testWorld;
+		std.log.info("Connecting to server: {s}", .{ipAddressEntry.currentString.items});
 		main.game.testWorld.init(ipAddressEntry.currentString.items, _connection) catch |err| {
-			std.log.err("Encountered error while opening world: {s}", .{@errorName(err)});
+			const formattedError = std.fmt.allocPrint(main.stackAllocator.allocator, "Encountered error while opening world: {s}", .{@errorName(err)}) catch unreachable;
+			defer main.stackAllocator.free(formattedError);
+			std.log.err("{s}", .{formattedError});
+			main.gui.windowlist.notification.raiseNotification(formattedError);
+			return;
 		};
 		connection = null;
 	} else {
 		std.log.err("No connection found. Cannot connect.", .{});
+		main.gui.windowlist.notification.raiseNotification("No connection found. Cannot connect.");
 	}
 	for(gui.openWindows.items) |openWindow| {
 		gui.closeWindowFromRef(openWindow);

src/gui/windows/notification.zig

@@ -0,0 +1,55 @@
+const std = @import("std");
+
+const main = @import("root");
+const Vec2f = main.vec.Vec2f;
+
+const gui = @import("../gui.zig");
+const GuiWindow = gui.GuiWindow;
+const Button = @import("../components/Button.zig");
+const VerticalList = @import("../components/VerticalList.zig");
+const Label = @import("../components/Label.zig");
+
+pub var window: GuiWindow = GuiWindow {
+	.contentSize = Vec2f{128, 256},
+};
+
+const padding: f32 = 16;
+const width: f32 = 256;
+
+var text: []const u8 = "";
+
+pub fn deinit() void {
+	main.stackAllocator.free(text);
+}
+
+fn setNotificationText(newText: []const u8) void {
+	main.stackAllocator.free(text);
+	text = main.stackAllocator.dupe(u8, newText);
+}
+
+pub fn raiseNotification(notifText: []const u8) void {
+	main.gui.closeWindow("notification");
+	setNotificationText(notifText);
+	main.gui.openWindow("notification");
+}
+
+
+fn ack(_: usize) void {
+	gui.closeWindowFromRef(&window);
+}
+
+pub fn onOpen() void {
+	const list = VerticalList.init(.{padding, 16 + padding}, 300, 16);
+	list.add(Label.init(.{0, 0}, width, text, .center));
+	list.add(Button.initText(.{0, 0}, 100, "OK", .{ .callback = &ack }));
+	list.finish(.center);
+	window.rootComponent = list.toComponent();
+	window.contentSize = window.rootComponent.?.pos() + window.rootComponent.?.size() + @as(Vec2f, @splat(padding));
+	gui.updateWindowPositions();
+}
+
+pub fn onClose() void {
+	if(window.rootComponent) |*comp| {
+		comp.deinit();
+	}
+}