Make error sets explicit

src/main.zig

@@ -31,7 +31,7 @@ const FCoords = struct {
 
 const State = struct {
     period: f64,
-    timer: *mfb.Timer,
+    timer: mfb.Timer,
     active: bool = true,
     alloc: std.mem.Allocator,
     cursor_pos: Coords = undefined,
@@ -45,19 +45,16 @@ const State = struct {
     cheat_code: []const u8 = "rave",
     cheat_code_progress: usize = 0,
 
-    pub fn init(alloc: std.mem.Allocator, period: f64) !State {
-        var timer = try alloc.create(mfb.Timer);
-        timer.* = try mfb.Timer.init();
+    pub fn init(alloc: std.mem.Allocator, period: f64) std.mem.Allocator.Error!State {
         return State{
             .period = period,
-            .timer = timer,
+            .timer = try mfb.Timer.init(),
             .alloc = alloc,
         };
     }
 
     pub fn deinit(self: State) void {
-        self.timer.*.deinit();
-        self.alloc.destroy(self.timer);
+        self.timer.deinit();
     }
 
     pub fn cheatInput(self: *State, char: u32) void {
@@ -77,7 +74,7 @@ const State = struct {
 
     pub fn render(self: State, buf: Buffer) void {
         const period = if (!self.isCheating()) self.period else self.period / 10;
-        var bgValue = @rem(self.timer.*.now(), period) / period * 512;
+        var bgValue = @rem(self.timer.now(), period) / period * 512;
         if (bgValue >= 256) {
             bgValue = 512 - bgValue;
         }
@@ -112,7 +109,7 @@ const Buffer = struct {
     width: u32,
     height: u32,
 
-    pub fn init(alloc: std.mem.Allocator, width: u32, height: u32) !Buffer {
+    pub fn init(alloc: std.mem.Allocator, width: u32, height: u32) std.mem.Allocator.Error!Buffer {
         const slice = try alloc.alloc(mfb.Rgb, width * height);
         return Buffer{
             .alloc = alloc,