feat: add About menu with version info

src/main.zig

@@ -255,16 +255,6 @@ fn render(window: seizer.Window) !void {
         @floor((canvas.window_size[1] - space_taken_by_board[1]) / 2),
     };
 
-    _ = canvas.printText(
-        .{
-            0,
-            canvas.window_size[1],
-        },
-        "{s}",
-        .{build_options.version},
-        .{ .@"align" = .left, .baseline = .bottom, .scale = scalef },
-    );
-
     if (win_count) |w| {
         _ = canvas.printText(
             .{
@@ -892,6 +882,7 @@ var main_menu_item_selected: u32 = 0;
 const MAIN_MENU_ITEMS = [_][]const u8{
     "Continue",
     "New Game",
+    "About",
     "Quit",
 };
 fn menuMain(event: MenuEvent) !void {
@@ -911,6 +902,8 @@ fn menuMain(event: MenuEvent) !void {
             } else if (std.mem.eql(u8, menu_item, "New Game")) {
                 try resetGame();
                 current_menu_fn = null;
+            } else if (std.mem.eql(u8, menu_item, "About")) {
+                current_menu_fn = menuAbout;
             } else if (std.mem.eql(u8, menu_item, "Quit")) {
                 window_global.setShouldClose(true);
             }
@@ -939,6 +932,34 @@ fn menuMain(event: MenuEvent) !void {
     }
 }
 
+fn menuAbout(event: MenuEvent) !void {
+    switch (event) {
+        .up => {},
+        .down => {},
+        .select => {},
+        .deselect => {
+            current_menu_fn = menuMain;
+        },
+        .draw => |d| {
+            const version_text_size = canvas.font.fmtTextSize("version = {s}", .{build_options.version}, d.scalef);
+
+            const margin = [2]f32{ d.scalef * 10, d.scalef * 10 };
+            const menu_size = [2]f32{ version_text_size[0] + 2 * margin[0], version_text_size[1] + 2 * margin[1] };
+            const menu_offset = [2]f32{ @floor((canvas.window_size[0] - menu_size[0]) / 2), @floor((canvas.window_size[1] - menu_size[1]) / 2) };
+
+            canvas.rect(
+                menu_offset,
+                menu_size,
+                .{ .color = .{ 0, 0, 0, 0xFF } },
+            );
+            const x: f32 = canvas.window_size[0] / 2;
+            const y: f32 = menu_offset[1] + margin[1];
+
+            _ = canvas.printText(.{ x, y }, "version = {s}", .{build_options.version}, .{ .@"align" = .center, .scale = d.scalef });
+        },
+    }
+}
+
 const DeckSprites = assets.DeckSprites;
 const Card = assets.Card;