Dock

src/graphics.zig

@@ -372,7 +372,7 @@ pub fn beginDraw() bool {
     // Window is probably hidden
     if (Graphics.render_target == null) return false;
 
-    Graphics.render_pass = sdl.BeginGPURenderPass(Graphics.command_buffer, &.{
+    Graphics.render_pass = sdl.BeginGPURenderPass(Graphics.command_buffer.?, &.{
         .clear_color = .{ .r = 0.0, .g = 0.0, .b = 0.0, .a = 1.0 },
         .cycle = false,
         .load_op = sdl.GPU_LOADOP_CLEAR,
@@ -396,11 +396,35 @@ pub fn beginDraw() bool {
     return true;
 }
 
-pub fn drawMesh(mesh: Mesh, texture: Assets.Texture, matrix: Transform.TMatrix) void {
+pub fn clearDepth() void {
+    sdl.EndGPURenderPass(Graphics.render_pass.?);
+
+    Graphics.render_pass = sdl.BeginGPURenderPass(Graphics.command_buffer.?, &.{
+        .clear_color = .{ .r = 0.0, .g = 0.0, .b = 0.0, .a = 1.0 },
+        .cycle = false,
+        .load_op = sdl.GPU_LOADOP_LOAD,
+        .store_op = sdl.GPU_STOREOP_STORE,
+        .mip_level = 0,
+        .texture = Graphics.fsaa_target,
+    }, 1, &.{
+        .clear_depth = 1.0,
+        .load_op = sdl.GPU_LOADOP_CLEAR,
+        .store_op = sdl.GPU_STOREOP_DONT_CARE,
+        .stencil_load_op = sdl.GPU_STOREOP_DONT_CARE,
+        .stencil_store_op = sdl.GPU_STOREOP_DONT_CARE,
+        .texture = Graphics.depth_texture,
+    }) orelse err.sdl();
+
+    sdl.BindGPUGraphicsPipeline(Graphics.render_pass, Graphics.pipeline);
+    sdl.BindGPUVertexBuffers(Graphics.render_pass, 0, &.{ .offset = 0, .buffer = Graphics.vertex_buffer }, 1);
+    sdl.PushGPUVertexUniformData(Graphics.command_buffer, 0, &Graphics.camera.matrix, 16 * 4);
+}
+
+pub fn drawMesh(mesh: Mesh, texture: Assets.Texture, transform: Transform) void {
     if (Graphics.render_pass == null) return;
     const asset_texture = Assets.get(texture) orelse return;
 
-    sdl.PushGPUVertexUniformData(Graphics.command_buffer, 1, &matrix, 16 * 4);
+    sdl.PushGPUVertexUniformData(Graphics.command_buffer, 1, &transform.matrix(), 16 * 4);
     sdl.BindGPUFragmentSamplers(Graphics.render_pass, 0, &sdl.GPUTextureSamplerBinding{
         .texture = asset_texture.texture,
         .sampler = asset_texture.sampler,
@@ -496,13 +520,15 @@ pub fn getHeight() u32 {
     return @max(1, Graphics.window_size[1]);
 }
 
-pub fn generatePlane(x0: f32, y0: f32, x1: f32, y1: f32) [30]f32 {
+pub fn generatePlane(x0: f32, y0: f32, x1: f32, y1: f32, w: f32, h: f32) [30]f32 {
+    const hw = w * 0.5;
+    const hh = h * 0.5;
     return .{
-        -0.5, -0.5, 0, x0, y1,
-        0.5,  0.5,  0, x1, y0,
-        -0.5, 0.5,  0, x0, y0,
-        0.5,  0.5,  0, x1, y0,
-        -0.5, -0.5, 0, x0, y1,
-        0.5,  -0.5, 0, x1, y1,
+        -hw, -hh, 0, x0, y1,
+        hw,  hh,  0, x1, y0,
+        -hw, hh,  0, x0, y0,
+        hw,  hh,  0, x1, y0,
+        -hw, -hh, 0, x0, y1,
+        hw,  -hh, 0, x1, y1,
     };
 }

src/graphics/camera.zig

@@ -52,16 +52,18 @@ pub fn to_screen(camera: Camera, position: Transform.Position) @Vector(2, f32) {
     return .{ x * wmod, y * wmod };
 }
 
-pub fn mouse_in_quad(camera: Camera, mouse: @Vector(2, f32), quad_transform: Transform) bool {
+pub fn mouse_in_quad(camera: Camera, mouse: @Vector(2, f32), quad_transform: Transform, width: f32, height: f32) bool {
     @setFloatMode(.optimized);
 
     const matrix = Transform.multiplyMatrix(camera.matrix, quad_transform.matrix());
 
+    const hw = width * 0.5;
+    const hh = height * 0.5;
     const pi: [4]@Vector(2, f32) = .{
-        .{ -0.5, -0.5 },
-        .{ -0.5, 0.5 },
-        .{ 0.5, 0.5 },
-        .{ 0.5, -0.5 },
+        .{ -hw, -hh },
+        .{ -hw,  hh },
+        .{  hw,  hh },
+        .{  hw, -hh },
     };
     var po: [4]@Vector(2, f32) = undefined;
     for (0..4) |i| {

src/graphics/transform.zig

@@ -1,25 +1,25 @@
 const std = @import("std");
+const math = @import("../math.zig");
 const Transform = @This();
 
 pub const TMatrix = @Vector(16, f32);
 
 pub const Position = @Vector(3, f32);
 pub const Rotation = @Vector(4, f32);
-pub const Scale = @Vector(3, f32);
+pub const Scale = f32;
 
 position: Position = @splat(0.0),
 rotation: Rotation = .{ 1.0, 0.0, 0.0, 0.0 },
-scale: Scale = @splat(1.0),
+scale: Scale = 1.0,
 
 pub fn matrix(transform: Transform) TMatrix {
     @setFloatMode(.optimized);
 
-    const r = rotationMatrix(transform.rotation);
-    const sx, const sy, const sz = transform.scale;
+    const r = rotationMatrix(transform.rotation) * @as(@Vector(9, f32), @splat(transform.scale));
     return .{
-        sx * r[0], sy * r[1], sz * r[2], transform.position[0],
-        sx * r[3], sy * r[4], sz * r[5], transform.position[1],
-        sx * r[6], sy * r[7], sz * r[8], transform.position[2],
+        r[0], r[1], r[2], transform.position[0],
+        r[3], r[4], r[5], transform.position[1],
+        r[6], r[7], r[8], transform.position[2],
         0.0,  0.0,  0.0,  1.0,
     };
 }
@@ -27,24 +27,12 @@ pub fn matrix(transform: Transform) TMatrix {
 pub fn inverseMatrix(transform: Transform) TMatrix {
     @setFloatMode(.optimized);
 
-    const r = rotationMatrix(flipRotation(transform.rotation));
+    const r = rotationMatrix(flipRotation(transform.rotation)) * @as(@Vector(9, f32), @splat(1.0 / transform.scale));
     const tx, const ty, const tz = transform.position;
-    const sx = 1.0 / transform.scale[0];
-    const sy = 1.0 / transform.scale[1];
-    const sz = 1.0 / transform.scale[2];
-    const r0 = r[0] * sx;
-    const r1 = r[1] * sx;
-    const r2 = r[2] * sx;
-    const r3 = r[3] * sy;
-    const r4 = r[4] * sy;
-    const r5 = r[5] * sy;
-    const r6 = r[6] * sz;
-    const r7 = r[7] * sz;
-    const r8 = r[8] * sz;
     return .{
-        r0,  r1,  r2,  -(r0 * tx + r1 * ty + r2 * tz),
-        r3,  r4,  r5,  -(r3 * tx + r4 * ty + r5 * tz),
-        r6,  r7,  r8,  -(r6 * tx + r7 * ty + r8 * tz),
+        r[0], r[1], r[2], -(r[0] * tx + r[1] * ty + r[2] * tz),
+        r[3], r[4], r[5], -(r[3] * tx + r[4] * ty + r[5] * tz),
+        r[6], r[7], r[8], -(r[6] * tx + r[7] * ty + r[8] * tz),
         0.0,  0.0,  0.0,  1.0,
     };
 }
@@ -94,6 +82,7 @@ pub fn rotateVector(vector: Position, rotation: Rotation) Position {
 pub fn rotate(transform: *Transform, rotation: Rotation) void {
     @setFloatMode(.optimized);
 
+    // Also rotate `Position` around the origin?
     transform.rotation = normalizeRotation(combineRotations(transform.rotation, rotation));
 }
 
@@ -148,6 +137,8 @@ pub fn normalizeRotation(r: Rotation) Rotation {
     }
 }
 
+/// a: Child `Rotation`
+/// b: Parent `Rotation`
 pub fn combineRotations(a: Rotation, b: Rotation) Rotation {
     @setFloatMode(.optimized);
 
@@ -230,3 +221,31 @@ pub fn multiplyMatrix(a: TMatrix, b: TMatrix) TMatrix {
     }
     return output;
 }
+
+/// a: Child `Transform`
+/// b: Parent `Transform`
+pub fn combineTransforms(a: Transform, b: Transform) Transform {
+    @setFloatMode(.optimized);
+
+    return Transform{
+        .position = rotateVector(a.position, b.rotation) * @as(Position, @splat(b.scale)) + b.position,
+        .rotation = combineRotations(a.rotation, b.rotation),
+        .scale = a.scale * b.scale,
+    };
+}
+
+pub fn lerpTransformTimeLn(a: Transform, b: Transform, t: f32, lnf: f32) Transform {
+    return lerpTransform(b, a, @exp(lnf * t));
+}
+
+pub fn lerpTransform(a: Transform, b: Transform, f: f32) Transform {
+    @setFloatMode(.optimized);
+
+    return Transform{
+        .position = math.lerp(a.position, b.position, f),
+        .rotation = math.slerp(a.rotation, b.rotation, f),
+        .scale = math.lerp(a.scale, b.scale, f),
+    };
+}
+
+pub const ZERO = Transform{};

src/math.zig

@@ -36,15 +36,21 @@ pub inline fn slerpTime(a: anytype, b: anytype, t: f32, comptime f: f32) @TypeOf
 pub fn slerpTimeLn(a: anytype, b: anytype, t: f32, lnf: f32) @TypeOf(a, b) {
     @setFloatMode(.optimized);
 
+    return slerp(b, a, @exp(lnf * t));
+}
+
+pub fn slerp(a: anytype, b: anytype, f: f32) @TypeOf(a, b) {
+    @setFloatMode(.optimized);
+
     const cos = @reduce(.Add, a * b);
     if (cos > 0.999) {
-        return lerpTimeLn(a, b, t, lnf);
+        return lerp(a, b, f);
     }
 
     const angle = std.math.acos(cos);
 
-    const a_angle_factor = @exp(lnf * t);
-    const b_angle_factor = 1.0 - a_angle_factor;
+    const a_angle_factor = 1 - f;
+    const b_angle_factor = f;
 
     const rev_angle_sin = 1.0 / std.math.sin(angle);
     const a_sin = std.math.sin(a_angle_factor * angle);
@@ -165,3 +171,14 @@ pub fn limit(vector: anytype, value: f32) @TypeOf(vector) {
     else
         return vector;
 }
+
+pub fn norm(vector: anytype) @TypeOf(vector) {
+    const len = length(vector);
+    if (len < 1.01 and len > 0.99) return vector;
+    if (len < 1e-10) {
+        var output = @as(@TypeOf(vector), @splat(0));
+        output[@typeInfo(@TypeOf(vector)).vector.len - 1] = 1;
+        return output;
+    }
+    return vector * @as(@TypeOf(vector), @splat(1.0 / len));
+}

src/world.zig

@@ -11,40 +11,69 @@ const Order = i32;
 
 pub var object_map: std.AutoHashMapUnmanaged(Id, usize) = .{};
 pub var objects: std.ArrayListUnmanaged(Object) = .{};
+
 pub var plane_mesh: Graphics.Mesh = undefined;
 pub var cube_mesh: Graphics.Mesh = undefined;
 pub var table_mesh: Graphics.Mesh = undefined;
 pub var texture: Assets.Texture = undefined;
 pub var hand_texture: Assets.Texture = undefined;
+
 pub var camera_position: @Vector(2, f32) = @splat(0);
-pub var hover: ?Id = null;
 pub var hand_transform: Graphics.Transform = .{};
-pub var panning = false;
+pub var dock_transform: Graphics.Transform = .{};
 pub var zoom: i32 = 0;
+
+pub var hover: ?Id = null;
+pub var panning = false;
 pub var hand_objects: u32 = 0;
+pub var hand_scale: f32 = 0;
+pub var dock_objects: u32 = 0;
+pub var dock_last_width: f32 = 0;
+pub var dock_focused: bool = false;
+pub var dock_spacing: f32 = 0;
 pub var min_order: Order = undefined;
 pub var max_order: Order = undefined;
 
 const Object = struct {
     transform: Graphics.Transform = .{},
     target_transform: Graphics.Transform = .{},
-    scale: Graphics.Transform.Scale,
+    width: f32,
+    height: f32,
     mesh: Graphics.Mesh,
     texture: Assets.Texture,
     order: Order,
     id: Id,
     index: u32,
-    parent: enum {
-        none,
-        hand,
-    } = .none,
-    hand_index: u32 = 0,
+    parent: Parent = .none,
+    parent_index: u32 = 0,
     influence: f32 = 0,
 
+    const Parent = enum {
+        none,
+        hand,
+        dock,
+    };
+
+    pub fn reparent(self: *@This(), new_parent: Parent) void {
+        self.transform = self.drawingTransform();
+        self.influence = 0;
+        self.parent = new_parent;
+    }
     pub fn drawingTransform(self: @This()) Graphics.Transform {
-        var transform = self.transform;
-        transform.position += @as(@Vector(3, f32), @splat(self.influence)) * World.hand_transform.position;
-        return transform;
+        const transform = self.transform;
+        const parent_transform = switch (self.parent) {
+            .hand => World.hand_transform,
+            .dock => World.dock_transform,
+            else => return transform,
+        };
+        return Graphics.Transform.combineTransforms(
+            transform,
+            Graphics.Transform.lerpTransform(
+                .{},
+                parent_transform,
+                self.influence,
+            ),
+        );
     }
 };
 
@@ -52,13 +81,9 @@ const World = @This();
 pub fn initDebug() void {
     for (0..10) |i| {
         (World.objects.addOne(Game.alloc) catch err.oom()).* = .{
-            .scale = @splat(0.5),
-            .mesh = Graphics.loadMesh(@ptrCast(&Graphics.generatePlane(
-                15.0 / 16.0,
-                @as(f32, @floatFromInt(i)) / 16.0,
-                16.0 / 16.0,
-                @as(f32, @floatFromInt(i + 1)) / 16.0,
-            ))),
+            .width = 0.5,
+            .height = 0.5,
+            .mesh = Graphics.loadMesh(@ptrCast(&Graphics.generatePlane(15.0 / 16.0, @as(f32, @floatFromInt(i)) / 16.0, 16.0 / 16.0, @as(f32, @floatFromInt(i + 1)) / 16.0, 0.5, 0.5))),
             .texture = Assets.load(.texture, "data/yakuza.png"),
             .order = @intCast(i),
             .id = @intCast(i),
@@ -66,18 +91,24 @@ pub fn initDebug() void {
         };
         World.object_map.put(Game.alloc, @intCast(i), i) catch err.oom();
     }
+
     World.plane_mesh = Graphics.loadMesh(@ptrCast(&PLANE_MESH_DATA));
     World.cube_mesh = Graphics.loadMesh(@ptrCast(&CUBE_MESH_DATA));
-    World.table_mesh = Graphics.loadMesh(@ptrCast(&Graphics.generatePlane(0, 0, 0.5, 0.5)));
+    World.table_mesh = Graphics.loadMesh(@ptrCast(&Graphics.generatePlane(0, 0, 0.5, 0.5, 8, 8)));
     World.texture = Assets.load(.texture, "data/yakuza.png");
     World.hand_texture = Assets.load(.texture, "data/hand.png");
+
     World.camera_position = @splat(0);
-    World.hover = null;
-    World.hand_transform = .{
-        .scale = @splat(0.5),
+    World.hand_transform = .{};
+    World.hand_scale = 0.5;
+    World.dock_transform = .{
+        .position = .{ 0, 0, 4 },
     };
-    World.panning = false;
+    World.dock_spacing = 0.2;
     World.zoom = 0;
+
+    World.panning = false;
+    World.dock_focused = false;
     World.min_order = 0;
     World.max_order = 9;
 }
@@ -97,16 +128,34 @@ pub fn deinit() void {
 }
 
 pub fn update(delta: f32) void {
-    World.updateOrder();
+    World.updateCamera(delta);
+    {
+        World.dock_transform = Graphics.Transform.lerpTransformTimeLn(
+            World.dock_transform,
+            Graphics.Transform.combineTransforms(.{ .position = .{
+                0,
+                -1,
+                -1 / Graphics.camera.lens,
+            } }, Graphics.camera.transform),
+            delta,
+            -128,
+        );
+    }
+    {
         const hand_target = Graphics.camera.raycast(.{ Game.mouse.x_norm, Game.mouse.y_norm }, .{ 0, 0, 1, 0 });
         World.hand_transform.position = math.lerpTimeLn(
             World.hand_transform.position,
-        hand_target + @Vector(3, f32){ World.hand_transform.scale[0] * 0.5, -World.hand_transform.scale[1] * 0.5, 0.2 },
+            hand_target + @Vector(3, f32){ 0, 0, 0.2 },
             delta,
             -24,
         );
+    }
+
+    World.updateOrder();
+
     World.hover = null;
     World.hand_objects = 0;
+    World.dock_objects = 0;
     for (World.objects.items) |*object| {
         updateHover(object);
     }
@@ -114,7 +163,6 @@ pub fn update(delta: f32) void {
         updateObject(object, delta);
     }
     World.updateControls();
-    World.updateCamera(delta);
 }
 
 pub fn updateControls() void {
@@ -151,104 +199,154 @@ pub fn updateControls() void {
         }
         World.zoom = std.math.clamp(World.zoom + Game.mouse.wheel, -4, 8);
     }
+    if (Game.mouse.y_norm <= -0.8) {
+        World.dock_focused = true;
+    }
+    if (Game.mouse.y_norm >= -0.6) {
+        World.dock_focused = false;
+    }
 }
 
 pub fn tryPick() bool {
     const hover_id = World.hover orelse return false;
     const object = World.getObject(hover_id) orelse return false;
     World.panning = false;
-    object.parent = .hand;
+    object.reparent(.hand);
     World.bringToTop(object);
     return true;
 }
 pub fn tryRelease() bool {
-    var last: ?*Object = null;
-    for (World.objects.items) |*object| {
-        if (object.parent != .hand) continue;
-        last = object;
-    }
-    if (last) |object| {
-        object.transform = object.drawingTransform();
-        object.target_transform.position = World.hand_transform.position + @Vector(3, f32){
-            -World.hand_transform.scale[0] * 0.5,
-            World.hand_transform.scale[1] * 0.5,
-            0,
-        };
-        object.influence = 0;
-        object.parent = .none;
-        return true;
+    const object = blk: {
+        var i = World.objects.items.len - 1;
+        while (true) {
+            const object = &World.objects.items[i];
+            if (object.parent == .hand) {
+                break :blk object;
             }
+            if (i > 0)
+                i -= 1
+            else
                 return false;
+        }
+    };
+    object.target_transform.position = World.hand_transform.position;
+    World.bringToTop(object);
+    if (World.dock_focused)
+        object.reparent(.dock)
+    else
+        object.reparent(.none);
+    return true;
 }
 
 pub fn updateHover(object: *Object) void {
-    if (object.parent == .hand) {
-        object.hand_index = World.hand_objects;
-        World.hand_objects += 1;
-        return;
-    }
-    if (Graphics.camera.mouse_in_quad(.{ Game.mouse.x_norm, Game.mouse.y_norm }, object.target_transform)) {
+    switch (object.parent) {
+        .none => {
+            if (!World.dock_focused and Graphics.camera.mouse_in_quad(.{ Game.mouse.x_norm, Game.mouse.y_norm }, object.transform, object.width, object.height)) {
                 if (World.hover == null or World.getObject(World.hover.?).?.index < object.index) {
                     World.hover = object.id;
                 }
             }
+        },
+        .hand => {
+            object.parent_index = World.hand_objects;
+            World.hand_objects += 1;
+        },
+        .dock => {
+            object.parent_index = World.dock_objects;
+            World.dock_last_width = object.width * object.target_transform.scale;
+            World.dock_objects += 1;
+            if (World.dock_focused and Graphics.camera.mouse_in_quad(.{ Game.mouse.x_norm, Game.mouse.y_norm }, object.transform.combineTransforms(World.dock_transform), object.width, object.height)) {
+                if (World.hover == null or World.getObject(World.hover.?).?.index < object.index) {
+                    World.hover = object.id;
+                }
+            }
+        },
+    }
 }
 
 pub fn updateObject(object: *Object, delta: f32) void {
     switch (object.parent) {
         .none => {
             object.target_transform.position[2] = if (World.hover == object.id) @as(f32, 0.1) else @as(f32, 0.001) * @as(f32, @floatFromInt(object.index + 1));
-            object.target_transform.scale = object.scale;
+            object.target_transform.scale = 1.0;
         },
         .hand => {
             var target_position = @as(@Vector(3, f32), @splat(0));
-            var target_scale = object.scale;
+            var target_scale: f32 = 1.0;
             target_position[2] -= 0.001;
-            const hand_order = hand_objects - object.hand_index - 1;
+            const hand_order = hand_objects - object.parent_index - 1;
             switch (hand_order) {
-                0 => {
-                    target_position[0] -= World.hand_transform.scale[0] * 0.5;
-                    target_position[1] += World.hand_transform.scale[1] * 0.5;
-                },
+                0 => {},
                 else => |i| {
-                    target_position[0] += World.hand_transform.scale[0] * if (i & 2 == 0) @as(f32, 0.5) else @as(f32, 1);
-                    target_position[1] += World.hand_transform.scale[1] * if ((i - 1) & 2 == 0) @as(f32, 0.25) else @as(f32, -0.25);
+                    target_position[0] += World.hand_scale * if (i & 2 == 0) @as(f32, 1) else @as(f32, 1.5);
+                    target_position[1] += World.hand_scale * if ((i - 1) & 2 == 0) @as(f32, -0.25) else @as(f32, -0.75);
                     target_position[2] -= @as(f32, @floatFromInt((hand_order - 1) / 4)) * 0.001;
-                    target_scale = math.limit(target_scale, World.hand_transform.scale[1] * 0.5);
+                    target_scale = 0.5;
                 },
             }
             object.target_transform.position = target_position;
             object.target_transform.scale = target_scale;
         },
+        .dock => {
+            var topleft_x = -World.dock_last_width * 0.5 + World.dock_spacing * (@as(f32, @floatFromInt(object.parent_index)) - @as(f32, @floatFromInt(World.dock_objects - 1)) * 0.5);
+            const total_w = @as(f32, @floatFromInt(World.dock_objects - 1)) * World.dock_spacing + World.dock_last_width;
+            if (total_w > Graphics.camera.aspect * 2) {
+                topleft_x += math.lerp(0, Graphics.camera.aspect - total_w * 0.5, Game.mouse.x_norm);
             }
-    if (object.parent == .hand) {
+            const hit = World.hover == object.id;
+            const topleft_y = if (World.dock_focused) if (hit) @as(f32, 0.5) else @as(f32, 0.3) else @as(f32, 0.2);
+            object.target_transform.position = .{
+                topleft_x + object.width * 0.5 * object.target_transform.scale,
+                topleft_y - object.height * 0.5 * object.target_transform.scale,
+                if (hit) @as(f32, 0.02) else @as(f32, 0),
+            };
+            object.target_transform.rotation = if (hit)
+                Graphics.Transform.ZERO.rotation
+            else
+                Graphics.Transform.rotationByAxis(.{ 0, 1, 0 }, 0.001);
+        },
+    }
+    if (object.parent != .none) {
         object.influence = math.lerpTimeLn(
             object.influence,
             1.0,
             delta,
-            -8,
+            -24,
         );
     }
-    object.transform.position = math.lerpTimeLn(
-        object.transform.position,
-        object.target_transform.position,
+    object.transform = Graphics.Transform.lerpTransformTimeLn(
+        object.transform,
+        object.target_transform,
         delta,
-        -8,
-    );
-    object.transform.scale = math.lerpTimeLn(
-        object.transform.scale,
-        object.target_transform.scale,
-        delta,
-        -8,
+        -24,
     );
 }
 
 pub fn draw() void {
-    Graphics.drawMesh(World.table_mesh, World.texture, Graphics.Transform.matrix(.{ .scale = @splat(8) }));
+    Graphics.drawMesh(World.table_mesh, World.texture, .{});
+
     for (World.objects.items) |*object| {
-        Graphics.drawMesh(object.mesh, object.texture, object.drawingTransform().matrix());
+        if (object.parent != .dock)
+            Graphics.drawMesh(object.mesh, object.texture, object.drawingTransform());
+    }
+
+    Graphics.drawMesh(
+        World.plane_mesh,
+        World.hand_texture,
+        Graphics.Transform.combineTransforms(
+            .{
+                .position = .{ World.hand_scale * 0.5, -World.hand_scale * 0.5, 0 },
+                .scale = World.hand_scale,
+            },
+            World.hand_transform,
+        ),
+    );
+
+    Graphics.clearDepth();
+    for (World.objects.items) |*object| {
+        if (object.parent == .dock)
+            Graphics.drawMesh(object.mesh, object.texture, object.drawingTransform());
     }
-    Graphics.drawMesh(World.plane_mesh, World.hand_texture, World.hand_transform.matrix());
 }
 
 pub fn updateCamera(delta: f32) void {
@@ -381,3 +479,11 @@ const PLANE_MESH_DATA = [_]f32{
     -0.5, -0.5, 0, 0.0, 1.0,
     0.5,  -0.5, 0, 1.0, 1.0,
 };
+const PLANE_MESH_DATA_HALF = [_]f32{
+    -0.25, -0.25, 0, 0.0, 1.0,
+    0.25,  0.25,  0, 1.0, 0.0,
+    -0.25, 0.25,  0, 0.0, 0.0,
+    0.25,  0.25,  0, 1.0, 0.0,
+    -0.25, -0.25, 0, 0.0, 1.0,
+    0.25,  -0.25, 0, 1.0, 1.0,
+};