feat: web: write win count to disk

build.zig.zon

@@ -16,8 +16,8 @@
     // internet connectivity.
     .dependencies = .{
         .seizer = .{
-            .url = "https://github.com/leroycep/seizer/archive/c66b5e5f1148a1f6ce37560ed1b8bc883520541e.tar.gz",
-            .hash = "122051972ed81522b6d1a8e1306f0cd3848a81180781794dce80fefcf1e42dc00d30",
+            .url = "https://github.com/leroycep/seizer/archive/8fbc262657f505a11505d12eb277ff5736821769.tar.gz",
+            .hash = "1220b6df5a68c8c918d92befcfbe379010c7ddbe25fded0a2e103c4514012ad48b97",
         },
     },
     .paths = .{

src/main.zig

@@ -1,7 +1,10 @@
 pub const main = seizer.main;
 
+const APPNAME = "seizer-solitaire";
+
 var gpa: std.mem.Allocator = undefined;
 var prng: std.rand.DefaultPrng = undefined;
+var context_global: *seizer.Context = undefined;
 var window_global: seizer.Window = undefined;
 var canvas: seizer.Canvas = undefined;
 var card_tilemap: ?DeckSprites = null;
@@ -35,6 +38,8 @@ var win_count: u32 = 0;
 var win_triggered: bool = false;
 
 pub fn init(context: *seizer.Context) !void {
+    context_global = context;
+
     gpa = context.gpa;
     prng = std.rand.DefaultPrng.init(@bitCast(std.time.timestamp()));
 
@@ -106,6 +111,7 @@ pub fn init(context: *seizer.Context) !void {
         .on_event = toggleMenu,
         .default_bindings = &.{
             .{ .gamepad = .start },
+            .{ .keyboard = .esc },
         },
     });
     try context.addButtonInput(.{
@@ -113,50 +119,35 @@ pub fn init(context: *seizer.Context) !void {
         .on_event = undo,
         .default_bindings = &.{
             .{ .gamepad = .x },
+            .{ .keyboard = .a },
         },
     });
 
-    win_count = try loadWinCount(gpa);
+    const read_buffer = try gpa.alloc(u8, @sizeOf(u32));
+    context.readFile(.{
+        .appname = APPNAME,
+        .path = "win_count.bin",
+        .buffer = read_buffer,
+        .callback = onWinCountRead,
+        .userdata = read_buffer.ptr,
+    });
 }
 
-fn loadWinCount(allocator: std.mem.Allocator) !u32 {
-    if (builtin.target.os.tag == .wasi) return 0;
+fn onWinCountRead(userdata: ?*anyopaque, result: seizer.Context.FileError![]const u8) void {
+    const buffer: *[4]u8 = @ptrCast(userdata);
+    defer gpa.free(buffer);
 
-    const app_data_dir_path = try std.fs.getAppDataDir(allocator, "seizer-solitaire");
-    defer allocator.free(app_data_dir_path);
-
-    var app_data_dir = try std.fs.cwd().makeOpenPath(app_data_dir_path, .{});
-    defer app_data_dir.close();
-
-    var win_count_file = try app_data_dir.createFile("win_count.bin", .{ .read = true, .truncate = false });
-    defer win_count_file.close();
-
-    var buffer: [4]u8 = undefined;
-    const bytes_read = try win_count_file.preadAll(&buffer, 0);
-    if (bytes_read < buffer.len) {
-        std.mem.writeInt(u32, &buffer, 0, .little);
-        try win_count_file.pwriteAll(&buffer, 0);
-        return 0;
-    } else {
-        return std.mem.readInt(u32, &buffer, .little);
+    if (result) |bytes| {
+        if (bytes.len >= @sizeOf(@TypeOf(win_count))) {
+            win_count = std.mem.readInt(u32, bytes[0..4], .little);
         }
+    } else |_| {}
 }
 
-fn saveWinCount(allocator: std.mem.Allocator, count: u32) !void {
-    if (builtin.target.os.tag == .wasi) return;
-
-    const app_data_dir_path = try std.fs.getAppDataDir(allocator, "seizer-solitaire");
-    defer allocator.free(app_data_dir_path);
-
-    var app_data_dir = try std.fs.cwd().makeOpenPath(app_data_dir_path, .{});
-    defer app_data_dir.close();
-
-    var win_count_file = try app_data_dir.createFile("win_count.bin", .{ .read = true, .truncate = false });
-    defer win_count_file.close();
-
-    var buffer: [4]u8 = undefined;
-    std.mem.writeInt(u32, &buffer, count, .little);
-    try win_count_file.pwriteAll(&buffer, 0);
+fn onWinCountWritten(userdata: ?*anyopaque, result: seizer.Context.FileError!void) void {
+    const buffer: *u32 = @ptrCast(@alignCast(userdata));
+    defer gpa.destroy(buffer);
+    _ = result catch {};
 }
 
 fn resetGame() !void {
@@ -226,7 +217,15 @@ fn render(window: seizer.Window) !void {
     if (haveWon() and !win_triggered) {
         win_count += 1;
 
-        try saveWinCount(gpa, win_count);
+        const win_count_write_buffer = try gpa.create(u32);
+        std.mem.writeInt(u32, std.mem.asBytes(win_count_write_buffer), win_count, .little);
+        context_global.writeFile(.{
+            .appname = APPNAME,
+            .path = "win_count.bin",
+            .data = std.mem.asBytes(win_count_write_buffer),
+            .callback = onWinCountWritten,
+            .userdata = win_count_write_buffer,
+        });
 
         resetHistory();
         win_triggered = true;