// Default Scene - A simple scene with a floor and a tesseract
Scene(
    name: "Default Scene",
    entities: [
        EntityTemplate(
            name: Some("floor"),
            tags: ["static"],
            transform: Transform4D(
                // Entity transform positions the floor at y=-2.0 in world space
                // (Hyperplane visual mesh is created at y=0 in local space)
                position: Vec4(x: 0.0, y: -2.0, z: 0.0, w: 0.0),
                rotation: (s: 1.0, b_xy: 0.0, b_xz: 0.0, b_xw: 0.0, b_yz: 0.0, b_yw: 0.0, b_zw: 0.0, p: 0.0),
                scale: 1.0,
            ),
            shape: ShapeTemplate(
                type: "Hyperplane",
                // y is used for physics collider placement
                y: -2.0,
                size: 10.0,
                subdivisions: 10,
                cell_size: 5.0,
                thickness: 0.001,
            ),
            material: Material(base_color: (0.5, 0.5, 0.5, 1.0)),
        ),
        EntityTemplate(
            name: Some("tesseract"),
            tags: ["dynamic"],
            transform: Transform4D(
                position: Vec4(x: 0.0, y: 0.0, z: 0.0, w: 0.0),
                rotation: (s: 1.0, b_xy: 0.0, b_xz: 0.0, b_xw: 0.0, b_yz: 0.0, b_yw: 0.0, b_zw: 0.0, p: 0.0),
                scale: 1.0,
            ),
            shape: ShapeTemplate(
                type: "Tesseract",
                size: 2.0,
            ),
            material: Material(base_color: (1.0, 1.0, 1.0, 1.0)),
        ),
    ],
    gravity: Some(-20.0),
    player_spawn: Some((0.0, 0.0, 5.0, 0.0)),
)