mittens-engine 0.6.0

A Vulkan and OpenXR scene engine with ECS, reactive signals, and Meow Meow scripting
Documentation 
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// vtuber-mirror-example scene
//
// XR-first temple scene for mirror/render-view validation.
// Derived from bisket-vr-demo but without the Rust-side bone debug harness.
//
// To run:
//   cargo run --release --example vtuber-mirror-example

RendererSettings {
    window_size(640, 480)
}

BGC {
    C.rgba(0.90, 0.93, 0.98, 1.0)
}

AL.rgb(0.20, 0.20, 0.24)

Clock.bpm(60) {}

RenderGraph {
    EmissivePass {
        BlurPass {
            radius_ndc(0.06)
            half_res(true)
        }
    }
    Bloom {
        intensity(0.90)
        radius_ndc(0.06)
        emissive_scale(1.2)
        half_res(true)
    }
}

T.position(0.15, -0.45, 1.0) {
    DL {
        intensity(1.0)
        color(1.0, 0.98, 0.95)
    }
}

T.position(-0.85, 0.55, 0.35) {
    DL {
        intensity(0.95)
        color(0.90, 0.94, 1.0)
    }
}

T.position(0.75, 0.35, -0.75) {
    DL {
        intensity(0.85)
        color(1.0, 1.0, 1.0)
    }
}

// --- Temple shell and floor collision ---
ED {
    T.position(0.0, -0.75, 0.0).scale(120.0, 0.12, 120.0) {
        Collision.static() {
            CollisionShape.cube([60.0, 0.06, 60.0])
        }
        R.cube() { C.rgba(0.75, 0.75, 0.75, 1.0) }
    }

    T.position(0.0, -0.55, -0.2).scale(8.0, 0.18, 10.5) {
        R.cube() { C.rgba(0.86, 0.84, 0.82, 1.0) }
    }

    T.position(0.0, -1.28, 1.55).scale(4.4, 0.14, 1.3) {
        R.cube() { C.rgba(0.90, 0.88, 0.86, 1.0) }
    }

    

    T.position(0.0, 3.35, -1.9).scale(8.2, 0.34, 5.8) {
        R.cube() { C.rgba(0.90, 0.89, 0.87, 1.0) }
    }

    // rear columns
    T.position(-2.7, 0.50, -3.2) {
        T.scale(0.42, 1.95, 0.42) {
            R.cube() { C.rgba(0.98, 0.98, 0.97, 1.0) }
        }
        T.position(0.0, 2.15, 0.0).scale(0.52, 0.12, 0.52) {
            R.circle2d() { C.rgba(0.93, 0.92, 0.90, 1.0) }
        }
        T.position(0.0, -2.15, 0.0).scale(0.56, 0.14, 0.56) {
            R.circle2d() { C.rgba(0.90, 0.89, 0.87, 1.0) }
        }
    }
    T.position(2.7, 0.50, -3.2) {
        T.scale(0.42, 1.95, 0.42) {
            R.cube() { C.rgba(0.98, 0.98, 0.97, 1.0) }
        }
        T.position(0.0, 2.15, 0.0).scale(0.52, 0.12, 0.52) {
            R.circle2d() { C.rgba(0.93, 0.92, 0.90, 1.0) }
        }
        T.position(0.0, -2.15, 0.0).scale(0.56, 0.14, 0.56) {
            R.circle2d() { C.rgba(0.90, 0.89, 0.87, 1.0) }
        }
    }

    // front columns
    T.position(-2.7, 0.50, 0.55) {
        T.scale(0.42, 1.95, 0.42) {
            R.cube() { C.rgba(0.98, 0.98, 0.97, 1.0) }
        }
        T.position(0.0, 2.15, 0.0).scale(0.52, 0.12, 0.52) {
            R.circle2d() { C.rgba(0.93, 0.92, 0.90, 1.0) }
        }
        T.position(0.0, -2.15, 0.0).scale(0.56, 0.14, 0.56) {
            R.circle2d() { C.rgba(0.90, 0.89, 0.87, 1.0) }
        }
    }
    T.position(2.7, 0.50, 0.55) {
        T.scale(0.42, 1.95, 0.42) {
            R.cube() { C.rgba(0.98, 0.98, 0.97, 1.0) }
        }
        T.position(0.0, 2.15, 0.0).scale(0.52, 0.12, 0.52) {
            R.circle2d() { C.rgba(0.93, 0.92, 0.90, 1.0) }
        }
        T.position(0.0, -2.15, 0.0).scale(0.56, 0.14, 0.56) {
            R.circle2d() { C.rgba(0.90, 0.89, 0.87, 1.0) }
        }
    }

    T.position(0.0, 2.45, 0.55).scale(6.35, 0.24, 0.62) {
        R.cube() { C.rgba(0.92, 0.91, 0.89, 1.0) }
    }

    
    
    T.position(0.0, 0.55, -4.5).scale(3.0, 3.0, 0.08) {
        R.cube() {
            Mirror.quality(2048) {}
        }
    }

    T.position(-1.1, -0.95, -1.7).scale(0.45, 0.9, 0.45) {
        R.cube() { C.rgba(0.75, 0.28, 0.26, 1.0) EM.on() Raycastable.enabled() }
    }
    T.position(0.0, -0.75, -1.25).scale(0.40, 1.3, 0.40) {
        R.cube() { C.rgba(0.15, 0.70, 0.98, 1.0) EM.on() Raycastable.enabled() }
    }
    T.position(1.1, -0.95, -1.7).scale(0.45, 0.9, 0.45) {
        R.cube() { C.rgba(1.0, 0.84, 0.18, 1.0) EM.on() Raycastable.enabled() }
    }
}

// --- bisket avatar — VR pose stays owned by the runtime; thumbstick locomotion moves an outer rig ---
// ED {
//     I.speed(1.0) {
//         InputTransformMode.forward_z() {
//             roll_axis_y()
//             fps_rotation()
//         }
//         T.position(3.0, 1.2, 3.5) {
//             name = "desktop_camera_rig"
//             Collision.kinematic() {
//                 CollisionShape.sphere(0.22)
//                 KineticResponse.slide() {}
//             }
//             T {
//                 AVC {
//                     head_bone("J_Bip_C_Head")
//                     camera_bone("J_Bip_C_Head")

//                     T {
//                         GLTF.new("assets/models/bisket.11.0.glb") {
//                             EM.on()
//                             PoseCapture { label("BisketDesktop") }
//                         }
//                     }

//                     T.position(0.0, 0.08, 0.12) {
//                         name = "desktop_camera_wrapper"
//                         C3D { Pointer {} }
//                     }
//                 }
//             }
//         }
//     }
// }

T {
    InputXR.on() {
        InputXRGamepad {
            locomotion()
            speed(1.5)
        }
        T {
            name = "xr_pose"
            AVC {
                    head_bone("J_Bip_C_Head")
                    camera_bone("J_Bip_C_Head")
                    left_hand_bone("J_Bip_L_Hand")
                    right_hand_bone("J_Bip_R_Hand")
                    ik_debug()

                    // Match bisket-vr-demo: body-local elbow hints that bias the
                    // bend downward and slightly outward from the torso.
                    left_arm_pole_direction([  1, -0.35, -1])
                    right_arm_pole_direction([-1, -0.35, -1])

                    hand_rotation_smoothing(220.0)
                    //hand_grip_rotation_left([-0.6408564, 0.29883623, 0.29883623, 0.6408564])
                    //hand_grip_rotation_right([-0.6408564, -0.29883623, -0.29883623, 0.6408564])


                    T {
                        GLTF.new("assets/models/bisket.11.0.glb") {
                            EM.on()
                            PoseCapture { label("Bisket") }
                        }
                    }

                    T.position(0.0, 0.08, 0.12) {
                        name = "xr_camera_wrapper"
                        Collision.kinematic() {
                            CollisionShape.sphere(0.18)
                            KineticResponse.slide() {}
                        }
                        CXR { Pointer {} }
                    }

                    XRHand.new(true, Left,  Grip) { T { Pointer {} } }
                    XRHand.new(true, Right, Grip) { T { Pointer {} } }
            }

            OV {
                T.scale(0.06, 0.06, 0.12) {
                    R.cube() {
                        C.rgba(0.00, 1.0, 1.0, 0.5)
                        EM.on()
                    }
                }
            }
        }
    }
}

XR.on()