diff --git a/src/component.zig b/src/component.zig
new file mode 100644
index 0000000..6874478
--- /dev/null
+++ b/src/component.zig
@@ -0,0 +1,59 @@
+const std = @import("std");
+const w4 = @import("wasm4.zig");
+const util = @import("util.zig");
+const Vec2 = util.Vec2;
+const Vec2f = util.Vec2f;
+const AABB = util.AABB;
+const Anim = @import("anim.zig");
+
+const approxEqAbs = std.math.approxEqAbs;
+const AnimData = []const Anim.Ops;
+
+// Components
+pub const Pos = struct {
+    pos: Vec2f,
+    last: Vec2f,
+    pinned: bool = false,
+    pub fn init(pos: Vec2f) @This() {
+        return @This(){ .pos = pos, .last = pos };
+    }
+    pub fn initVel(pos: Vec2f, vel: Vec2f) @This() {
+        return @This(){ .pos = pos, .last = pos - vel };
+    }
+};
+pub const Control = struct {
+    controller: enum { player },
+    state: enum { stand, walk, jump, fall, wallSlide },
+    facing: enum { left, right, up, down } = .right,
+    grabbing: ?struct { id: usize, which: usize } = null,
+};
+pub const Sprite = struct {
+    offset: Vec2 = Vec2{ 0, 0 },
+    size: w4.Vec2,
+    index: usize,
+    flags: w4.BlitFlags,
+};
+pub const StaticAnim = Anim;
+pub const ControlAnim = struct { anims: []AnimData, state: Anim };
+pub const Kinematic = struct {
+    col: AABB,
+    move: Vec2f = Vec2f{ 0, 0 },
+    lastCol: Vec2f = Vec2f{ 0, 0 },
+
+    pub fn inAir(this: @This()) bool {
+        return approxEqAbs(f32, this.lastCol[1], 0, 0.01);
+    }
+
+    pub fn onFloor(this: @This()) bool {
+        return approxEqAbs(f32, this.move[1], 0, 0.01) and this.lastCol[1] > 0;
+    }
+
+    pub fn isFalling(this: @This()) bool {
+        return this.move[1] > 0 and approxEqAbs(f32, this.lastCol[1], 0, 0.01);
+    }
+
+    pub fn onWall(this: @This()) bool {
+        return this.isFalling() and !approxEqAbs(f32, this.lastCol[0], 0, 0.01);
+    }
+};
+pub const Physics = struct { gravity: Vec2f, friction: Vec2f };
diff --git a/src/disk.zig b/src/disk.zig
new file mode 100644
index 0000000..e1f6b84
--- /dev/null
+++ b/src/disk.zig
@@ -0,0 +1,243 @@
+const assets = @import("assets");
+const std = @import("std");
+const util = @import("util.zig");
+const w4 = @import("wasm4.zig");
+const game = @import("game.zig");
+const comp = @import("component.zig");
+const Anim = @import("anim.zig");
+
+const Pos = comp.Pos;
+const Vec2 = util.Vec2;
+
+const SaveObj = enum(u4) {
+    Player,
+    Coin,
+    WireBeginPinned,
+    WireBeginLoose,
+    WireEndPinned,
+    WireEndLoose,
+};
+
+fn cell2u8(cell: util.Cell) [2]u8 {
+    return [_]u8{ @intCast(u8, cell[0]), @intCast(u8, cell[1]) };
+}
+
+fn vec2u16(vec2: util.Vec2) [2]u16 {
+    return [_]u16{ @intCast(u16, vec2[0]), @intCast(u16, vec2[1]) };
+}
+
+fn write_diff(writer: anytype, stride: usize, initial: []const u8, mapBuf: []const u8) !u8 {
+    var written: u8 = 0;
+    for (initial) |init_tile, i| {
+        if (mapBuf[i] != init_tile) {
+            const x = @intCast(u8, i % @intCast(usize, stride));
+            const y = @intCast(u8, @divTrunc(i, @intCast(usize, stride)));
+            const temp = [3]u8{ x, y, mapBuf[i] };
+            try writer.writeAll(&temp);
+            written += 1;
+        }
+    }
+    return written;
+}
+
+fn load_diff(mapBuf: []u8, stride: usize, diff: []const u8) void {
+    var i: usize = 0;
+    while (i < diff.len) : (i += 3) {
+        const x = diff[i];
+        const y = diff[i + 1];
+        const tile = diff[i + 2];
+        const a = x + y * stride;
+        mapBuf[a] = tile;
+        // this.set_cell(Cell{ x, y }, tile);
+    }
+}
+
+pub fn reset() void {
+    // TODO: implement reset
+    // This function should reset the game world without clearing the scores list,
+    // so a player can see how well they've done with the game in the past.
+}
+
+pub fn load() bool {
+    var load_buf: [1024]u8 = undefined;
+    const read = w4.diskr(&load_buf, 1024);
+    w4.tracef("%d bytes read", read);
+
+    // if (true) return false;
+    if (read <= 0) return false;
+    // for (load_buf[0 .. read - 1]) |byte| w4.tracef("%d", byte);
+
+    var stream = std.io.fixedBufferStream(load_buf[0..read]);
+    var reader = stream.reader();
+
+    var header: [5]u8 = undefined;
+    _ = reader.read(&header) catch w4.tracef("couldn't load header");
+    w4.tracef("%s", &header);
+    if (!std.mem.eql(u8, "wired", &header)) return false; // w4.tracef("did not load, incorrect header bytes");
+
+    game.score = reader.readByte() catch return false;
+
+    const obj_len = reader.readByte() catch return false;
+    // const map_len = reader.readByte() catch return false;
+    const conduit_len = reader.readByte() catch return false;
+
+    var i: usize = 0;
+    while (i < obj_len) : (i += 1) {
+        const b = reader.readByte() catch return false;
+        const obj = @intToEnum(SaveObj, @truncate(u4, b));
+        const id = @truncate(u4, b >> 4);
+        const x = reader.readIntBig(u16) catch return false;
+        const y = reader.readIntBig(u16) catch return false;
+        var pos = Pos.init(util.vec2ToVec2f(Vec2{ x, y }));
+        switch (obj) {
+            .Player => {
+                w4.tracef("player at %d, %d", x, y);
+                game.player.pos = pos;
+                // player.pos.pos += Vec2f{ 4, 6 };
+            },
+            .Coin => {
+                game.coins.append(.{
+                    .pos = pos,
+                    .sprite = .{ .offset = .{ 0, 0 }, .size = .{ 8, 8 }, .index = 4, .flags = .{ .bpp = .b2 } },
+                    .anim = Anim{ .anim = &game.anim_store.coin },
+                    .area = .{ .pos = .{ 0, 0 }, .size = .{ 8, 8 } },
+                }) catch unreachable;
+            },
+            .WireBeginPinned => {
+                var begin = game.wires.slice()[id].begin();
+                begin.* = pos;
+                begin.pinned = true;
+                game.wires.slice()[id].straighten();
+            },
+            .WireBeginLoose => {
+                var begin = game.wires.slice()[id].begin();
+                begin.* = pos;
+                begin.pinned = false;
+                game.wires.slice()[id].straighten();
+            },
+            .WireEndPinned => {
+                var end = game.wires.slice()[id].end();
+                end.* = pos;
+                end.pinned = true;
+                game.wires.slice()[id].straighten();
+            },
+            .WireEndLoose => {
+                var end = game.wires.slice()[id].end();
+                end.* = pos;
+                end.pinned = false;
+                game.wires.slice()[id].straighten();
+            },
+        }
+    }
+
+    // Load map
+    var buf: [256]u8 = undefined;
+    // const len = reader.readByte() catch return;
+    // const bytes_map = reader.read(buf[0 .. map_len * 3]) catch return false;
+    // w4.tracef("loading %d map diffs... %d bytes", map_len, bytes_map);
+    // load_diff(&solids_mutable, assets.solid_size[0], buf[0..bytes_map]);
+
+    // Load conduit
+    // const conduit_len = reader.readByte() catch return;
+    const bytes_conduit = reader.read(buf[0 .. conduit_len * 3]) catch return false;
+    w4.tracef("loading %d conduit diffs... %d bytes", conduit_len, bytes_conduit);
+    for (buf[0..bytes_conduit]) |byte| w4.tracef("%d", byte);
+    load_diff(&game.conduit_mutable, assets.conduit_size[0], buf[0..bytes_conduit]);
+
+    return true;
+}
+
+pub fn save() void {
+    var save_buf: [1024]u8 = undefined;
+    var save_stream = std.io.fixedBufferStream(&save_buf);
+    var save_writer = save_stream.writer();
+    save_writer.writeAll("wired") catch return w4.tracef("Couldn't write header");
+    save_writer.writeByte(game.score) catch return w4.tracef("Couldn't save score");
+    w4.tracef("score %d written", game.score);
+
+    // Write temporary length values
+    const lengths_start = save_stream.getPos() catch return w4.tracef("Couldn't get pos");
+    save_writer.writeByte(0) catch return w4.tracef("Couldn't write obj length");
+    // save_writer.writeByte(0) catch return w4.tracef("Couldn't write map length");
+    save_writer.writeByte(0) catch return w4.tracef("Couldn't write conduit length");
+
+    // Write player
+    const playerPos = vec2u16(util.vec2fToVec2(game.player.pos.pos));
+    save_writer.writeByte(@enumToInt(SaveObj.Player)) catch return w4.tracef("Player");
+    save_writer.writeIntBig(u16, playerPos[0]) catch return;
+    save_writer.writeIntBig(u16, playerPos[1]) catch return;
+    // save_writer.writeAll(&[_]u8{ @enumToInt(SaveObj.Player), @intCast(u8, player
+    var obj_len: u8 = 1;
+
+    for (game.coins.slice()) |coin, i| {
+        obj_len += 1;
+        const id = @intCast(u8, @truncate(u4, i)) << 4;
+        // const cell = util.world2cell(coin.pos.pos);
+        save_writer.writeByte(@enumToInt(SaveObj.Coin) | id) catch return w4.tracef("Couldn't save coin");
+        const pos = vec2u16(util.vec2fToVec2(coin.pos.pos));
+        save_writer.writeIntBig(u16, pos[0]) catch return;
+        save_writer.writeIntBig(u16, pos[1]) catch return;
+        // save_writer.writeInt(&) catch return;
+    }
+
+    // Write wires
+    for (game.wires.slice()) |*wire, i| {
+        const id = @intCast(u8, @truncate(u4, i)) << 4;
+        const begin = wire.begin();
+        const end = wire.end();
+        obj_len += 1;
+        if (begin.pinned) {
+            // const cell = util.world2cell(begin.pos);
+            save_writer.writeByte(@enumToInt(SaveObj.WireBeginPinned) | id) catch return w4.tracef("Couldn't save wire");
+            // const pos = cell2u16(cell);
+            const pos = vec2u16(util.vec2fToVec2(begin.pos));
+            save_writer.writeIntBig(u16, pos[0]) catch return;
+            save_writer.writeIntBig(u16, pos[1]) catch return;
+            // save_writer.writeAll(&cell2u8(cell)) catch return;
+        } else {
+            // const cell = util.world2cell(begin.pos);
+            save_writer.writeByte(@enumToInt(SaveObj.WireBeginLoose) | id) catch return w4.tracef("Couldn't save wire");
+            // const pos = cell2u16(cell);
+            const pos = vec2u16(util.vec2fToVec2(begin.pos));
+            save_writer.writeIntBig(u16, pos[0]) catch return;
+            save_writer.writeIntBig(u16, pos[1]) catch return;
+            // save_writer.writeAll(&cell2u8(cell)) catch return;
+        }
+        obj_len += 1;
+        if (end.pinned) {
+            // const cell = util.world2cell(end.pos);
+            save_writer.writeByte(@enumToInt(SaveObj.WireEndPinned) | id) catch return w4.tracef("Couldn't save wire");
+            // const pos = cell2u16(cell);
+            const pos = vec2u16(util.vec2fToVec2(end.pos));
+            save_writer.writeIntBig(u16, pos[0]) catch return;
+            save_writer.writeIntBig(u16, pos[1]) catch return;
+            // save_writer.writeAll(&cell2u8(cell)) catch return;
+        } else {
+            // const cell = util.world2cell(end.pos);
+            save_writer.writeByte(@enumToInt(SaveObj.WireEndLoose) | id) catch return w4.tracef("Couldn't save wire");
+            // const pos = cell2u16(cell);
+            const pos = vec2u16(util.vec2fToVec2(end.pos));
+            save_writer.writeIntBig(u16, pos[0]) catch return;
+            save_writer.writeIntBig(u16, pos[1]) catch return;
+            // save_writer.writeAll(&cell2u8(cell)) catch return;
+        }
+    }
+
+    // Write map
+    // const map_len =  write_diff(save_writer, assets.solid_size[0], &assets.solid, &solids_mutable) catch return w4.tracef("Couldn't save map diff");
+
+    // Write conduit
+    const conduit_len = write_diff(save_writer, assets.conduit_size[0], &assets.conduit, &game.conduit_mutable) catch return w4.tracef("Couldn't save map diff");
+
+    const endPos = save_stream.getPos() catch return;
+    save_stream.seekTo(lengths_start) catch w4.tracef("Couldn't seek");
+    save_writer.writeByte(obj_len) catch return w4.tracef("Couldn't write obj length");
+    // save_writer.writeByte(map_len) catch return w4.tracef("Couldn't write map length");
+    save_writer.writeByte(conduit_len) catch return w4.tracef("Couldn't write conduit length");
+
+    save_stream.seekTo(endPos) catch return;
+    const save_slice = save_stream.getWritten();
+    const written = w4.diskw(save_slice.ptr, save_slice.len);
+    w4.tracef("%d bytes written", written);
+    for (save_buf[0..written]) |byte| w4.tracef("%d", byte);
+}
diff --git a/src/game.zig b/src/game.zig
index 49e097d..fa4d32e 100644
--- a/src/game.zig
+++ b/src/game.zig
@@ -7,59 +7,24 @@ const Circuit = @import("circuit.zig");
 const Map = @import("map.zig");
 const Music = @import("music.zig");
 const State = @import("main.zig").State;
+const Disk = @import("disk.zig");
 
 const Vec2 = util.Vec2;
 const Vec2f = util.Vec2f;
 const AABB = util.AABB;
 const Anim = @import("anim.zig");
 
-// Components
-const Pos = struct {
-    pos: Vec2f,
-    last: Vec2f,
-    pinned: bool = false,
-    pub fn init(pos: Vec2f) @This() {
-        return @This(){ .pos = pos, .last = pos };
-    }
-    pub fn initVel(pos: Vec2f, vel: Vec2f) @This() {
-        return @This(){ .pos = pos, .last = pos - vel };
-    }
-};
-const Control = struct {
-    controller: enum { player },
-    state: enum { stand, walk, jump, fall, wallSlide },
-    facing: enum { left, right, up, down } = .right,
-    grabbing: ?struct { id: usize, which: usize } = null,
-};
-const Sprite = struct {
-    offset: Vec2 = Vec2{ 0, 0 },
-    size: w4.Vec2,
-    index: usize,
-    flags: w4.BlitFlags,
-};
-const StaticAnim = Anim;
-const ControlAnim = struct { anims: []AnimData, state: Anim };
-const Kinematic = struct {
-    col: AABB,
-    move: Vec2f = Vec2f{ 0, 0 },
-    lastCol: Vec2f = Vec2f{ 0, 0 },
+const comp = @import("component.zig");
 
-    pub fn inAir(this: @This()) bool {
-        return approxEqAbs(f32, this.lastCol[1], 0, 0.01);
-    }
+const Pos = comp.Pos;
+const Control = comp.Control;
+const Sprite = comp.Sprite;
+const ControlAnim = comp.ControlAnim;
+const StaticAnim = comp.StaticAnim;
+const Kinematic = comp.Kinematic;
+const Physics = comp.Physics;
+const AnimData = []const Anim.Ops;
 
-    pub fn onFloor(this: @This()) bool {
-        return approxEqAbs(f32, this.move[1], 0, 0.01) and this.lastCol[1] > 0;
-    }
-
-    pub fn isFalling(this: @This()) bool {
-        return this.move[1] > 0 and approxEqAbs(f32, this.lastCol[1], 0, 0.01);
-    }
-
-    pub fn onWall(this: @This()) bool {
-        return this.isFalling() and !approxEqAbs(f32, this.lastCol[0], 0, 0.01);
-    }
-};
 const Wire = struct {
     nodes: std.BoundedArray(Pos, 32) = std.BoundedArray(Pos, 32).init(0),
     enabled: bool = false,
@@ -82,7 +47,7 @@ const Wire = struct {
         }
     }
 };
-const Physics = struct { gravity: Vec2f, friction: Vec2f };
+
 const Player = struct {
     pos: Pos,
     control: Control,
@@ -91,7 +56,6 @@ const Player = struct {
     kinematic: Kinematic,
     physics: Physics,
 };
-// const World = ecs.World(Component);
 
 const Particle = struct {
     pos: Pos,
@@ -176,14 +140,14 @@ var circuit: Circuit = undefined;
 var particles: ParticleSystem = undefined;
 var prng = std.rand.DefaultPrng.init(0);
 var random = prng.random();
-var player: Player = undefined;
+pub var player: Player = undefined;
 var music = Music.Procedural.init(.C3, &Music.Minor, 83);
-var wires = std.BoundedArray(Wire, 10).init(0) catch unreachable;
+pub var wires = std.BoundedArray(Wire, 10).init(0) catch unreachable;
 var camera = Vec2{ 0, 0 };
 
 const Coin = struct { pos: Pos, sprite: Sprite, anim: Anim, area: AABB };
-var coins = std.BoundedArray(Coin, 20).init(0) catch unreachable;
-var score: u8 = 0;
+pub var coins = std.BoundedArray(Coin, 20).init(0) catch unreachable;
+pub var score: u8 = 0;
 var ScoreCoin = Sprite{
     .size = Map.tile_size,
     .index = 4,
@@ -191,20 +155,18 @@ var ScoreCoin = Sprite{
 };
 
 var solids_mutable = assets.solid;
-var conduit_mutable = assets.conduit;
+pub var conduit_mutable = assets.conduit;
 var conduitLevels_mutable: [conduit_mutable.len]u8 = undefined;
 
-const anim_store = struct {
+pub const anim_store = struct {
     const stand = Anim.frame(8);
     const walk = Anim.simple(4, &[_]usize{ 9, 10, 11, 12 });
     const jump = Anim.frame(13);
     const fall = Anim.frame(14);
     const wallSlide = Anim.frame(15);
-    const coin = Anim.simple(15, &[_]usize{ 4, 5, 6 });
+    pub const coin = Anim.simple(15, &[_]usize{ 4, 5, 6 });
 };
 
-const AnimData = []const Anim.Ops;
-
 const playerAnim = pac: {
     var animArr = std.BoundedArray(AnimData, 100).init(0) catch unreachable;
     animArr.append(&anim_store.stand) catch unreachable;
@@ -269,7 +231,7 @@ pub fn start() void {
     }
 
     // _ = w4.diskw("", 0);
-    if (!load()) {
+    if (!Disk.load()) {
         for (assets.coins) |coin| {
             coins.append(.{
                 .pos = Pos.init(util.vec2ToVec2f(coin * tile_size)),
@@ -326,12 +288,12 @@ pub fn update(time: usize) State {
             _ = coins.swapRemove(i);
         }
         // We save here to prevent duplicate coins
-        if (shouldSave) save();
+        if (shouldSave) Disk.save();
     }
 
     const newCamera = @divTrunc(util.world2cell(player.pos.pos), @splat(2, @as(i32, 20))) * @splat(2, @as(i32, 20));
     if (!@reduce(.And, newCamera == camera)) {
-        save();
+        Disk.save();
     }
     camera = newCamera;
 
@@ -417,233 +379,6 @@ pub fn update(time: usize) State {
     return .Game;
 }
 
-fn write_diff(writer: anytype, stride: usize, initial: []const u8, mapBuf: []const u8) !u8 {
-    var written: u8 = 0;
-    for (initial) |init_tile, i| {
-        if (mapBuf[i] != init_tile) {
-            const x = @intCast(u8, i % @intCast(usize, stride));
-            const y = @intCast(u8, @divTrunc(i, @intCast(usize, stride)));
-            const temp = [3]u8{ x, y, mapBuf[i] };
-            try writer.writeAll(&temp);
-            written += 1;
-        }
-    }
-    return written;
-}
-
-pub fn load_diff(mapBuf: []u8, stride: usize, diff: []const u8) void {
-    var i: usize = 0;
-    while (i < diff.len) : (i += 3) {
-        const x = diff[i];
-        const y = diff[i + 1];
-        const tile = diff[i + 2];
-        const a = x + y * stride;
-        mapBuf[a] = tile;
-        // this.set_cell(Cell{ x, y }, tile);
-    }
-}
-
-fn load() bool {
-    var load_buf: [1024]u8 = undefined;
-    const read = w4.diskr(&load_buf, 1024);
-    w4.tracef("%d bytes read", read);
-
-    // if (true) return false;
-    if (read <= 0) return false;
-    // for (load_buf[0 .. read - 1]) |byte| w4.tracef("%d", byte);
-
-    var stream = std.io.fixedBufferStream(load_buf[0..read]);
-    var reader = stream.reader();
-
-    var header: [5]u8 = undefined;
-    _ = reader.read(&header) catch w4.tracef("couldn't load header");
-    w4.tracef("%s", &header);
-    if (!std.mem.eql(u8, "wired", &header)) return false; // w4.tracef("did not load, incorrect header bytes");
-
-    score = reader.readByte() catch return false;
-
-    const obj_len = reader.readByte() catch return false;
-    // const map_len = reader.readByte() catch return false;
-    const conduit_len = reader.readByte() catch return false;
-
-    var i: usize = 0;
-    while (i < obj_len) : (i += 1) {
-        const b = reader.readByte() catch return false;
-        const obj = @intToEnum(SaveObj, @truncate(u4, b));
-        const id = @truncate(u4, b >> 4);
-        const x = reader.readIntBig(u16) catch return false;
-        const y = reader.readIntBig(u16) catch return false;
-        var pos = Pos.init(util.vec2ToVec2f(Vec2{ x, y }));
-        switch (obj) {
-            .Player => {
-                w4.tracef("player at %d, %d", x, y);
-                player.pos = pos;
-                // player.pos.pos += Vec2f{ 4, 6 };
-            },
-            .Coin => {
-                coins.append(.{
-                    .pos = pos,
-                    .sprite = .{ .offset = .{ 0, 0 }, .size = .{ 8, 8 }, .index = 4, .flags = .{ .bpp = .b2 } },
-                    .anim = Anim{ .anim = &anim_store.coin },
-                    .area = .{ .pos = .{ 0, 0 }, .size = .{ 8, 8 } },
-                }) catch unreachable;
-            },
-            .WireBeginPinned => {
-                var begin = wires.slice()[id].begin();
-                begin.* = pos;
-                begin.pinned = true;
-                wires.slice()[id].straighten();
-            },
-            .WireBeginLoose => {
-                var begin = wires.slice()[id].begin();
-                begin.* = pos;
-                begin.pinned = false;
-                wires.slice()[id].straighten();
-            },
-            .WireEndPinned => {
-                var end = wires.slice()[id].end();
-                end.* = pos;
-                end.pinned = true;
-                wires.slice()[id].straighten();
-            },
-            .WireEndLoose => {
-                var end = wires.slice()[id].end();
-                end.* = pos;
-                end.pinned = false;
-                wires.slice()[id].straighten();
-            },
-        }
-    }
-
-    // Load map
-    var buf: [256]u8 = undefined;
-    // const len = reader.readByte() catch return;
-    // const bytes_map = reader.read(buf[0 .. map_len * 3]) catch return false;
-    // w4.tracef("loading %d map diffs... %d bytes", map_len, bytes_map);
-    // load_diff(&solids_mutable, assets.solid_size[0], buf[0..bytes_map]);
-
-    // Load conduit
-    // const conduit_len = reader.readByte() catch return;
-    const bytes_conduit = reader.read(buf[0 .. conduit_len * 3]) catch return false;
-    w4.tracef("loading %d conduit diffs... %d bytes", conduit_len, bytes_conduit);
-    for (buf[0..bytes_conduit]) |byte| w4.tracef("%d", byte);
-    load_diff(&conduit_mutable, assets.conduit_size[0], buf[0..bytes_conduit]);
-
-    return true;
-}
-
-const SaveObj = enum(u4) {
-    Player,
-    Coin,
-    WireBeginPinned,
-    WireBeginLoose,
-    WireEndPinned,
-    WireEndLoose,
-};
-
-fn cell2u8(cell: util.Cell) [2]u8 {
-    return [_]u8{ @intCast(u8, cell[0]), @intCast(u8, cell[1]) };
-}
-
-fn vec2u16(vec2: util.Vec2) [2]u16 {
-    return [_]u16{ @intCast(u16, vec2[0]), @intCast(u16, vec2[1]) };
-}
-
-fn save() void {
-    var save_buf: [1024]u8 = undefined;
-    var save_stream = std.io.fixedBufferStream(&save_buf);
-    var save_writer = save_stream.writer();
-    save_writer.writeAll("wired") catch return w4.tracef("Couldn't write header");
-    save_writer.writeByte(score) catch return w4.tracef("Couldn't save score");
-    w4.tracef("score %d written", score);
-
-    // Write temporary length values
-    const lengths_start = save_stream.getPos() catch return w4.tracef("Couldn't get pos");
-    save_writer.writeByte(0) catch return w4.tracef("Couldn't write obj length");
-    // save_writer.writeByte(0) catch return w4.tracef("Couldn't write map length");
-    save_writer.writeByte(0) catch return w4.tracef("Couldn't write conduit length");
-
-    // Write player
-    const playerPos = vec2u16(util.vec2fToVec2(player.pos.pos));
-    save_writer.writeByte(@enumToInt(SaveObj.Player)) catch return w4.tracef("Player");
-    save_writer.writeIntBig(u16, playerPos[0]) catch return;
-    save_writer.writeIntBig(u16, playerPos[1]) catch return;
-    // save_writer.writeAll(&[_]u8{ @enumToInt(SaveObj.Player), @intCast(u8, player
-    var obj_len: u8 = 1;
-
-    for (coins.slice()) |coin, i| {
-        obj_len += 1;
-        const id = @intCast(u8, @truncate(u4, i)) << 4;
-        // const cell = util.world2cell(coin.pos.pos);
-        save_writer.writeByte(@enumToInt(SaveObj.Coin) | id) catch return w4.tracef("Couldn't save coin");
-        const pos = vec2u16(util.vec2fToVec2(coin.pos.pos));
-        save_writer.writeIntBig(u16, pos[0]) catch return;
-        save_writer.writeIntBig(u16, pos[1]) catch return;
-        // save_writer.writeInt(&) catch return;
-    }
-
-    // Write wires
-    for (wires.slice()) |*wire, i| {
-        const id = @intCast(u8, @truncate(u4, i)) << 4;
-        const begin = wire.begin();
-        const end = wire.end();
-        obj_len += 1;
-        if (begin.pinned) {
-            // const cell = util.world2cell(begin.pos);
-            save_writer.writeByte(@enumToInt(SaveObj.WireBeginPinned) | id) catch return w4.tracef("Couldn't save wire");
-            // const pos = cell2u16(cell);
-            const pos = vec2u16(util.vec2fToVec2(begin.pos));
-            save_writer.writeIntBig(u16, pos[0]) catch return;
-            save_writer.writeIntBig(u16, pos[1]) catch return;
-            // save_writer.writeAll(&cell2u8(cell)) catch return;
-        } else {
-            // const cell = util.world2cell(begin.pos);
-            save_writer.writeByte(@enumToInt(SaveObj.WireBeginLoose) | id) catch return w4.tracef("Couldn't save wire");
-            // const pos = cell2u16(cell);
-            const pos = vec2u16(util.vec2fToVec2(begin.pos));
-            save_writer.writeIntBig(u16, pos[0]) catch return;
-            save_writer.writeIntBig(u16, pos[1]) catch return;
-            // save_writer.writeAll(&cell2u8(cell)) catch return;
-        }
-        obj_len += 1;
-        if (end.pinned) {
-            // const cell = util.world2cell(end.pos);
-            save_writer.writeByte(@enumToInt(SaveObj.WireEndPinned) | id) catch return w4.tracef("Couldn't save wire");
-            // const pos = cell2u16(cell);
-            const pos = vec2u16(util.vec2fToVec2(end.pos));
-            save_writer.writeIntBig(u16, pos[0]) catch return;
-            save_writer.writeIntBig(u16, pos[1]) catch return;
-            // save_writer.writeAll(&cell2u8(cell)) catch return;
-        } else {
-            // const cell = util.world2cell(end.pos);
-            save_writer.writeByte(@enumToInt(SaveObj.WireEndLoose) | id) catch return w4.tracef("Couldn't save wire");
-            // const pos = cell2u16(cell);
-            const pos = vec2u16(util.vec2fToVec2(end.pos));
-            save_writer.writeIntBig(u16, pos[0]) catch return;
-            save_writer.writeIntBig(u16, pos[1]) catch return;
-            // save_writer.writeAll(&cell2u8(cell)) catch return;
-        }
-    }
-
-    // Write map
-    // const map_len =  write_diff(save_writer, assets.solid_size[0], &assets.solid, &solids_mutable) catch return w4.tracef("Couldn't save map diff");
-
-    // Write conduit
-    const conduit_len = write_diff(save_writer, assets.conduit_size[0], &assets.conduit, &conduit_mutable) catch return w4.tracef("Couldn't save map diff");
-
-    const endPos = save_stream.getPos() catch return;
-    save_stream.seekTo(lengths_start) catch w4.tracef("Couldn't seek");
-    save_writer.writeByte(obj_len) catch return w4.tracef("Couldn't write obj length");
-    // save_writer.writeByte(map_len) catch return w4.tracef("Couldn't write map length");
-    save_writer.writeByte(conduit_len) catch return w4.tracef("Couldn't write conduit length");
-
-    save_stream.seekTo(endPos) catch return;
-    const save_slice = save_stream.getWritten();
-    const written = w4.diskw(save_slice.ptr, save_slice.len);
-    w4.tracef("%d bytes written", written);
-    for (save_buf[0..written]) |byte| w4.tracef("%d", byte);
-}
-
 const Interaction = struct {
     pos: Vec2,
     details: union(enum) {
diff --git a/src/menu.zig b/src/menu.zig
index 3f2faa2..70316c8 100644
--- a/src/menu.zig
+++ b/src/menu.zig
@@ -15,7 +15,9 @@ pub fn start() void {
 }
 
 pub fn update() State {
-    w4.DRAW_COLORS.* = 0x0002;
+    w4.DRAW_COLORS.* = 0x0004;
+    w4.rect(Vec2{ 0, 0 }, Vec2{ 160, 160 });
+    w4.DRAW_COLORS.* = 0x0001;
     var i: i32 = 1;
     w4.text("WIRED", Vec2{ 16, i * 16 });
     i += 1;