Refactor project for easier extension

build.rs

@@ -10,8 +10,8 @@ const VK_HEADER: &[&str] = &[
 const FN_PREFIX: &str = "PFN_";
 
 const SHADER: &[&str] = &[
-    "src/overlay/shader/single_color.vert",
-    "src/overlay/shader/single_color.frag",
+    "src/overlay/elements/shader/single_color.vert",
+    "src/overlay/elements/shader/single_color.frag",
 ];
 
 fn query_vulkan_function_typedefs() {

src/overlay/elements/mod.rs

@@ -0,0 +1,6 @@
+mod pedals;
+mod pipeline;
+mod radar;
+
+pub use pedals::*;
+pub use radar::*;

src/overlay/elements/pedals.rs

@@ -0,0 +1,66 @@
+use std::sync::Arc;
+
+use anyhow::Result;
+use rfactor_sm_reader::{rF2VehicleTelemetry, VehicleScoringInfoV01};
+use ui::prelude::*;
+
+use crate::overlay::{rfactor_data::DataReceiver, UiOverlay};
+
+pub struct Pedals {
+    gui: Arc<GuiBuilder>,
+
+    brake: Arc<ProgressBar>,
+    throttle: Arc<ProgressBar>,
+}
+
+impl Pedals {
+    pub fn new(gui_handler: &Arc<GuiHandler>) -> Result<Self> {
+        const DESC: &str = include_str!("ui_files/pedals.xml");
+
+        let gui = GuiBuilder::from_str(gui_handler, DESC)?;
+
+        let brake = gui.element("brake")?;
+        let throttle = gui.element("throttle")?;
+
+        Ok(Self {
+            gui,
+            brake,
+            throttle,
+        })
+    }
+}
+
+impl Drop for Pedals {
+    fn drop(&mut self) {
+        self.gui.disable().unwrap();
+    }
+}
+
+impl UiOverlay for Pedals {
+    fn enable_ui(&mut self) -> Result<()> {
+        self.gui.enable()
+    }
+}
+
+impl DataReceiver for Pedals {
+    fn scoring_update(&mut self, _vehicle_scoring: &[VehicleScoringInfoV01]) -> Result<()> {
+        Ok(())
+    }
+
+    fn telemetry_update(
+        &mut self,
+        player_id: Option<i32>,
+        telemetries: &[rF2VehicleTelemetry],
+    ) -> Result<()> {
+        if let Some(id) = player_id {
+            if let Some(telemetry) = telemetries.iter().find(|telemetry| telemetry.id == id) {
+                self.brake
+                    .set_progress(telemetry.unfiltered_throttle as f32)?;
+                self.throttle
+                    .set_progress(telemetry.unfiltered_throttle as f32)?;
+            }
+        }
+
+        Ok(())
+    }
+}

src/overlay/elements/pipeline.rs

@@ -3,7 +3,7 @@ use vulkan_rs::prelude::*;
 
 use std::{mem, sync::Arc};
 
-use super::rendering::PositionOnlyVertex;
+use super::radar::PositionOnlyVertex;
 
 pub struct SingleColorPipeline {
     pipeline: Arc<Pipeline>,
@@ -11,7 +11,12 @@ pub struct SingleColorPipeline {
 }
 
 impl SingleColorPipeline {
-    pub fn new(device: Arc<Device>, renderpass: &Arc<RenderPass>) -> Result<Self> {
+    pub fn new(
+        device: Arc<Device>,
+        renderpass: &Arc<RenderPass>,
+        width: u32,
+        height: u32,
+    ) -> Result<Self> {
         let vertex_shader = ShaderModule::from_slice(
             device.clone(),
             include_bytes!("shader/single_color.vert.spv"),
@@ -36,6 +41,23 @@ impl SingleColorPipeline {
             .add_descriptor_set_layout(&descriptor_layout)
             .build(device.clone())?;
 
+        let viewport = VkViewport {
+            x: 0.0,
+            y: 0.0,
+            width: width as f32,
+            height: height as f32,
+            minDepth: 0.0,
+            maxDepth: 1.0,
+        };
+
+        let scissor = VkRect2D {
+            offset: VkOffset2D { x: 0, y: 0 },
+            extent: VkExtent2D {
+                width: width,
+                height: height,
+            },
+        };
+
         let pipeline = Pipeline::new_graphics()
             .set_vertex_shader(
                 vertex_shader.clone(),
@@ -60,6 +82,8 @@ impl SingleColorPipeline {
             .default_color_blend(vec![VkPipelineColorBlendAttachmentState::default()])
             .default_rasterization(VK_CULL_MODE_NONE, VK_FRONT_FACE_COUNTER_CLOCKWISE)
             .default_multisample(VK_SAMPLE_COUNT_1_BIT)
+            .add_viewport(viewport)
+            .add_scissor(scissor)
             .build(device, &pipeline_layout, &renderpass, 0)?;
 
         Ok(Self {

src/overlay/elements/radar.rs

@@ -0,0 +1,495 @@
+use anyhow::Result;
+use cgmath::{ortho, vec2, vec3, vec4, Deg, InnerSpace, Matrix4, Rad, Vector2, Vector3, Vector4};
+use rfactor_sm_reader::*;
+use serde::{Deserialize, Serialize};
+use vulkan_rs::prelude::*;
+
+use std::sync::{Arc, Mutex};
+
+use super::pipeline::SingleColorPipeline;
+
+use crate::{
+    overlay::{rendering::Rendering, rfactor_data::DataReceiver, UiOverlay},
+    write_log,
+};
+
+#[derive(Clone)]
+pub struct PositionOnlyVertex {
+    pub position: Vector4<f32>,
+}
+
+impl PositionOnlyVertex {
+    ///
+    /// corners[0]  -  bottom left
+    /// corners[1]  -  top left
+    /// corners[2]  -  top right
+    /// corners[3]  -  bottom right
+    ///
+    pub fn from_2d_corners(ortho: Matrix4<f32>, corners: [Vector2<f32>; 4]) -> [Self; 6] {
+        [
+            Self {
+                position: ortho * corners[0].extend(0.0).extend(1.0),
+            },
+            Self {
+                position: ortho * corners[1].extend(0.0).extend(1.0),
+            },
+            Self {
+                position: ortho * corners[2].extend(0.0).extend(1.0),
+            },
+            Self {
+                position: ortho * corners[2].extend(0.0).extend(1.0),
+            },
+            Self {
+                position: ortho * corners[3].extend(0.0).extend(1.0),
+            },
+            Self {
+                position: ortho * corners[0].extend(0.0).extend(1.0),
+            },
+        ]
+    }
+}
+
+fn convert_vec(v: rF2Vec3) -> Vector3<f32> {
+    vec3(v.x as f32, v.y as f32, v.z as f32)
+}
+
+#[derive(Deserialize, Serialize, Clone, Copy, Debug)]
+pub struct RadarConfig {
+    pub radar_scale: f32,
+    pub radar_center_factor: f32,
+    pub radar_transparency: f32,
+    pub height_scale: f32,
+    pub width_scale: f32,
+    pub radar_car_distance: f32,
+    pub safe_color: Vector3<f32>,
+    pub danger_color: Vector3<f32>,
+}
+
+impl RadarConfig {
+    pub const fn new() -> Self {
+        Self {
+            radar_scale: 1.0,
+            radar_center_factor: 0.25,
+            radar_transparency: 0.5,
+            height_scale: 0.15,
+            width_scale: 0.4,
+            radar_car_distance: 20.0,
+            safe_color: vec3(0.0, 0.75, 0.0),
+            danger_color: vec3(0.75, 0.0, 0.0),
+        }
+    }
+}
+
+pub struct Radar {
+    // config
+    config: RadarConfig,
+
+    // radar objects
+    background: Option<RadarObject>,
+    player_car: RadarObject,
+    cars: Vec<RadarObject>,
+
+    // buffer car objects, to prevent recreating them every update
+    car_handles: Vec<RadarObject>,
+
+    // game info
+    player_id: Option<i32>,
+
+    // math objects
+    radar_center: Vector2<f32>,
+    ortho: Matrix4<f32>,
+    _window_width: u32,
+    _window_height: u32,
+    radar_extent: f32,
+    car_width: f32,
+    car_height: f32,
+
+    device: Arc<Device>,
+    queue: Arc<Mutex<Queue>>,
+
+    pipeline: SingleColorPipeline,
+    render_target: RenderTarget,
+
+    enabled: bool,
+}
+
+impl Radar {
+    pub fn new(
+        config: RadarConfig,
+        device: Arc<Device>,
+        queue: Arc<Mutex<Queue>>,
+        rendering: &Rendering,
+    ) -> Result<Self> {
+        write_log!(" =================== create RFactorData ===================");
+
+        let radar_extent = rendering.swapchain().width() as f32 * 0.075 * config.radar_scale;
+        let car_height = radar_extent * config.height_scale;
+        let car_width = car_height * config.width_scale;
+        let radar_center = vec2(
+            rendering.swapchain().width() as f32 / 2.0,
+            rendering.swapchain().height() as f32 / 2.0
+                - rendering.swapchain().height() as f32 * config.radar_center_factor,
+        );
+
+        let flip_y = matrix4_from_diagonal(vec3(1.0, -1.0, 1.0));
+        let ortho = flip_y
+            * ortho(
+                0.0,
+                rendering.swapchain().width() as f32,
+                0.0,
+                rendering.swapchain().height() as f32,
+                -1.0,
+                1.0,
+            );
+
+        let render_target = RenderTarget::builder()
+            .add_sub_pass(
+                SubPass::builder(
+                    rendering.swapchain().width(),
+                    rendering.swapchain().height(),
+                )
+                .set_prepared_targets(&rendering.images(), 0, [0.0, 0.0, 0.0, 1.0], false)
+                .build(&device, &queue)?,
+            )
+            .build(&device)?;
+
+        let pipeline = SingleColorPipeline::new(
+            device.clone(),
+            render_target.render_pass(),
+            rendering.swapchain().width(),
+            rendering.swapchain().height(),
+        )?;
+
+        Ok(Self {
+            config,
+
+            background: if config.radar_transparency == 0.0 {
+                None
+            } else {
+                Some(RadarObject::new(
+                    device.clone(),
+                    pipeline.descriptor_layout(),
+                    PositionOnlyVertex::from_2d_corners(
+                        ortho * Matrix4::from_translation(radar_center.extend(0.0)),
+                        [
+                            vec2(-radar_extent, -radar_extent),
+                            vec2(-radar_extent, radar_extent),
+                            vec2(radar_extent, radar_extent),
+                            vec2(radar_extent, -radar_extent),
+                        ],
+                    ),
+                    [0.5, 0.5, 0.5, config.radar_transparency],
+                )?)
+            },
+            player_car: RadarObject::new(
+                device.clone(),
+                pipeline.descriptor_layout(),
+                PositionOnlyVertex::from_2d_corners(
+                    ortho * Matrix4::from_translation(radar_center.extend(0.0)),
+                    [
+                        vec2(-car_width, -car_height),
+                        vec2(-car_width, car_height),
+                        vec2(car_width, car_height),
+                        vec2(car_width, -car_height),
+                    ],
+                ),
+                [0.0, 0.9, 0.0, 0.9],
+            )?,
+            cars: Vec::new(),
+            car_handles: Vec::new(),
+
+            player_id: None,
+
+            radar_center,
+            ortho,
+            _window_width: rendering.swapchain().width(),
+            _window_height: rendering.swapchain().height(),
+            radar_extent,
+            car_width,
+            car_height,
+
+            device,
+            queue,
+
+            render_target,
+            pipeline,
+
+            enabled: false,
+        })
+    }
+
+    fn create_car_object(&self, offset: Vector2<f32>, color: [f32; 4]) -> Result<RadarObject> {
+        write_log!(" =================== create car object ===================");
+
+        RadarObject::new(
+            self.device.clone(),
+            &self.pipeline.descriptor_layout(),
+            Self::create_car_vertices(
+                self.ortho
+                    * Matrix4::from_translation(self.radar_center.extend(0.0))
+                    * Matrix4::from_translation(offset.extend(0.0)),
+                self.car_width,
+                self.car_height,
+            ),
+            color,
+        )
+    }
+
+    fn create_car_vertices(
+        mvp: Matrix4<f32>,
+        car_width: f32,
+        car_height: f32,
+    ) -> [PositionOnlyVertex; 6] {
+        PositionOnlyVertex::from_2d_corners(
+            mvp,
+            [
+                vec2(-car_width, -car_height),
+                vec2(-car_width, car_height),
+                vec2(car_width, car_height),
+                vec2(car_width, -car_height),
+            ],
+        )
+    }
+
+    pub fn render(&self, image_index: u32) -> Result<Arc<CommandBuffer>> {
+        let command_buffer =
+            CommandBuffer::new_primary().build(self.device.clone(), self.queue.clone())?;
+
+        {
+            let mut recorder = command_buffer.begin(VkCommandBufferBeginInfo::new(
+                VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT
+                    | VK_COMMAND_BUFFER_USAGE_SIMULTANEOUS_USE_BIT,
+            ))?;
+
+            self.render_target
+                .begin(&recorder, VK_SUBPASS_CONTENTS_INLINE, image_index as usize);
+
+            recorder.bind_pipeline(self.pipeline.pipeline())?;
+
+            for object in self.objects() {
+                let buffer = &object.position_buffer;
+
+                recorder.bind_descriptor_sets_minimal(&[&object.descriptor_set]);
+                recorder.bind_vertex_buffer(buffer);
+                recorder.draw_complete_single_instance(buffer.size() as u32);
+            }
+
+            self.render_target.end(&recorder);
+        }
+
+        Ok(command_buffer)
+    }
+
+    fn objects(&self) -> Vec<&RadarObject> {
+        write_log!(" =================== get objects of radar ===================");
+
+        let mut objects = Vec::new();
+
+        // only draw radar when player is loaded into a map
+        if let Some(_player_id) = &self.player_id {
+            // only draw radar when any car is near enough
+            if !self.cars.is_empty() {
+                if let Some(background) = &self.background {
+                    objects.push(background);
+                }
+
+                for other_player_cars in &self.cars {
+                    objects.push(other_player_cars);
+                }
+
+                objects.push(&self.player_car);
+            }
+        }
+
+        objects
+    }
+}
+
+impl UiOverlay for Radar {
+    fn enable_ui(&mut self) -> Result<()> {
+        self.enabled = true;
+
+        Ok(())
+    }
+}
+
+impl DataReceiver for Radar {
+    fn scoring_update(&mut self, _vehicle_scoring: &[VehicleScoringInfoV01]) -> Result<()> {
+        Ok(())
+    }
+
+    fn telemetry_update(
+        &mut self,
+        player_id: Option<i32>,
+        telemetries: &[rF2VehicleTelemetry],
+    ) -> Result<()> {
+        self.cars.clear();
+
+        if !self.enabled {
+            return Ok(());
+        }
+
+        if let Some(player_id) = player_id {
+            // make sure there are enough cars in buffer
+            if self.car_handles.len() < telemetries.len() {
+                let size_diff = telemetries.len() - self.car_handles.len();
+
+                for _ in 0..size_diff {
+                    self.car_handles
+                        .push(self.create_car_object(vec2(0.0, 0.0), [0.0, 0.0, 0.0, 0.0])?);
+                }
+            }
+
+            let mut player_position = CarPosition::default();
+            let mut other_positions = Vec::new();
+
+            for telemetry in telemetries {
+                let car = CarPosition::new(
+                    convert_vec(telemetry.position),
+                    [
+                        convert_vec(telemetry.orientation[0]),
+                        convert_vec(telemetry.orientation[1]),
+                        convert_vec(telemetry.orientation[2]),
+                    ],
+                );
+
+                if telemetry.id == player_id {
+                    player_position = car
+                } else {
+                    other_positions.push(car);
+                }
+            }
+
+            // update radar objects
+            let mut buffer_car_index = 0;
+
+            for other_position in other_positions {
+                let diff = player_position.position - other_position.position;
+                let distance = diff.magnitude();
+
+                // check if car is close enough to the players car
+                if distance < self.config.radar_car_distance {
+                    let offset = diff.xz() * (self.radar_extent / self.config.radar_car_distance);
+
+                    let buffered_car = self.car_handles[buffer_car_index].clone();
+                    buffer_car_index += 1;
+                    buffered_car.update(
+                        self.ortho,
+                        offset,
+                        player_position.rotation,
+                        other_position.rotation,
+                        self.radar_center,
+                        self.car_width,
+                        self.car_height,
+                        [0.9, 0.9, 0.0, 0.9],
+                    )?;
+
+                    self.cars.push(buffered_car);
+                }
+            }
+        }
+
+        Ok(())
+    }
+}
+
+#[derive(Clone)]
+struct RadarObject {
+    descriptor_set: Arc<DescriptorSet>,
+
+    // uniform buffer
+    color_buffer: Arc<Buffer<f32>>,
+
+    // vertex buffer
+    position_buffer: Arc<Buffer<PositionOnlyVertex>>,
+}
+
+impl RadarObject {
+    fn new(
+        device: Arc<Device>,
+        descriptor_layout: &Arc<DescriptorSetLayout>,
+        positions: [PositionOnlyVertex; 6],
+        color: [f32; 4],
+    ) -> Result<Self> {
+        let color_buffer = Buffer::builder()
+            .set_usage(VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT)
+            .set_memory_usage(MemoryUsage::CpuOnly)
+            .set_data(&color)
+            .build(device.clone())?;
+
+        let position_buffer = Buffer::builder()
+            .set_usage(VK_BUFFER_USAGE_VERTEX_BUFFER_BIT)
+            .set_memory_usage(MemoryUsage::CpuOnly)
+            .set_data(&positions)
+            .build(device.clone())?;
+
+        let descriptor_pool = DescriptorPool::builder()
+            .set_layout(descriptor_layout.clone())
+            .build(device.clone())?;
+
+        let descriptor_set = descriptor_pool.prepare_set().allocate()?;
+        descriptor_set.update(&[DescriptorWrite::uniform_buffers(0, &[&color_buffer])])?;
+
+        Ok(Self {
+            descriptor_set,
+            color_buffer,
+            position_buffer,
+        })
+    }
+
+    pub fn update(
+        &self,
+
+        ortho: Matrix4<f32>,
+        offset: Vector2<f32>,
+        player_rotation: impl Into<Deg<f32>>,
+        rotation: impl Into<Deg<f32>>,
+        radar_center: Vector2<f32>,
+        car_width: f32,
+        car_height: f32,
+        color: [f32; 4],
+    ) -> Result<()> {
+        self.position_buffer.fill(&Radar::create_car_vertices(
+            ortho
+                * Matrix4::from_translation(radar_center.extend(0.0))
+                * Matrix4::from_angle_z(-player_rotation.into())
+                * Matrix4::from_translation(offset.extend(0.0))
+                * Matrix4::from_angle_z(rotation.into()),
+            car_width,
+            car_height,
+        ))?;
+        self.color_buffer.fill(&color)
+    }
+}
+
+struct CarPosition {
+    pub position: Vector3<f32>,
+    pub rotation: Rad<f32>,
+}
+
+impl CarPosition {
+    fn new(position: Vector3<f32>, orientation: [Vector3<f32>; 3]) -> Self {
+        Self {
+            position,
+            rotation: Rad(orientation[2].x.atan2(orientation[2].z)),
+        }
+    }
+}
+
+impl Default for CarPosition {
+    fn default() -> Self {
+        Self {
+            position: vec3(0.0, 0.0, 0.0),
+            rotation: Rad(0.0),
+        }
+    }
+}
+
+const fn matrix4_from_diagonal(diagonal: Vector3<f32>) -> Matrix4<f32> {
+    Matrix4::from_cols(
+        vec4(diagonal.x, 0.0, 0.0, 0.0),
+        vec4(0.0, diagonal.y, 0.0, 0.0),
+        vec4(0.0, 0.0, diagonal.z, 0.0),
+        vec4(0.0, 0.0, 0.0, 1.0),
+    )
+}

src/overlay/elements/ui_files/gui.xsd

@@ -0,0 +1,235 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
+
+    <!-- definition of attributes -->
+    <xs:attribute name="id" type="xs:string"></xs:attribute>
+    <xs:attribute name="x_slot" type="xs:nonNegativeInteger"></xs:attribute>
+    <xs:attribute name="y_slot" type="xs:nonNegativeInteger"></xs:attribute>
+    <xs:attribute name="x_dim" type="xs:nonNegativeInteger"></xs:attribute>
+    <xs:attribute name="y_dim" type="xs:nonNegativeInteger"></xs:attribute>
+    <xs:attribute name="x_size" type="xs:nonNegativeInteger"></xs:attribute>
+    <xs:attribute name="y_size" type="xs:nonNegativeInteger"></xs:attribute>
+    <xs:attribute name="normal" type="xs:string"></xs:attribute>
+    <xs:attribute name="selected" type="xs:string"></xs:attribute>
+    <xs:attribute name="click_sound" type="xs:string"></xs:attribute>
+    <xs:attribute name="hover_sound" type="xs:string"></xs:attribute>
+    <xs:attribute name="select_mode">
+        <xs:simpleType>
+            <xs:restriction base="xs:string">
+                <xs:enumeration value="none"></xs:enumeration>
+                <xs:enumeration value="bigger"></xs:enumeration>
+            </xs:restriction>
+        </xs:simpleType>
+    </xs:attribute>
+    <xs:attribute name="icon" type="xs:string"></xs:attribute>
+    <xs:attribute name="icon_margin" type="xs:nonNegativeInteger"></xs:attribute>
+    <xs:attribute name="text_color" type="xs:string"></xs:attribute>
+    <xs:attribute name="text_ratio" type="xs:decimal"></xs:attribute>
+    <xs:attribute name="text_alignment">
+        <xs:simpleType>
+            <xs:restriction base="xs:string">
+                <xs:enumeration value="left"></xs:enumeration>
+                <xs:enumeration value="right"></xs:enumeration>
+                <xs:enumeration value="top"></xs:enumeration>
+                <xs:enumeration value="bottom"></xs:enumeration>
+                <xs:enumeration value="center"></xs:enumeration>
+            </xs:restriction>
+        </xs:simpleType>
+    </xs:attribute>
+    <xs:attribute name="select" type="xs:boolean"></xs:attribute>
+    <xs:attribute name="x_offset" type="xs:integer"></xs:attribute>
+    <xs:attribute name="y_offset" type="xs:integer"></xs:attribute>
+    <xs:attribute name="width" type="xs:integer"></xs:attribute>
+    <xs:attribute name="height" type="xs:integer"></xs:attribute>
+    <xs:attribute name="padding" type="xs:nonNegativeInteger"></xs:attribute>
+    <xs:attribute name="margin" type="xs:nonNegativeInteger"></xs:attribute>
+    <xs:attribute name="vert_align">
+        <xs:simpleType>
+            <xs:restriction base="xs:string">
+                <xs:enumeration value="top"></xs:enumeration>
+                <xs:enumeration value="middle"></xs:enumeration>
+                <xs:enumeration value="bottom"></xs:enumeration>
+            </xs:restriction>
+        </xs:simpleType>
+    </xs:attribute>
+    <xs:attribute name="hori_align">
+        <xs:simpleType>
+            <xs:restriction base="xs:string">
+                <xs:enumeration value="left"></xs:enumeration>
+                <xs:enumeration value="middle"></xs:enumeration>
+                <xs:enumeration value="right"></xs:enumeration>
+            </xs:restriction>
+        </xs:simpleType>
+    </xs:attribute>
+    <xs:attribute name="background" type="xs:string"></xs:attribute>
+    <xs:attribute name="foreground" type="xs:string"></xs:attribute>
+    <xs:attribute name="button_normal" type="xs:string"></xs:attribute>
+    <xs:attribute name="button_selected" type="xs:string"></xs:attribute>
+    <xs:attribute name="reference_width" type="xs:nonNegativeInteger"></xs:attribute>
+    <xs:attribute name="reference_height" type="xs:nonNegativeInteger"></xs:attribute>
+    <xs:attribute name="layer" type="xs:nonNegativeInteger"></xs:attribute>
+    <xs:attribute name="line_count" type="xs:nonNegativeInteger"></xs:attribute>
+    <xs:attribute name="west_neighbour" type="xs:string"></xs:attribute>
+    <xs:attribute name="east_neighbour" type="xs:string"></xs:attribute>
+    <xs:attribute name="north_neighbour" type="xs:string"></xs:attribute>
+    <xs:attribute name="south_neighbour" type="xs:string"></xs:attribute>
+
+    <!-- definition of complex elements -->
+    <xs:element name="root">
+        <xs:complexType>
+            <xs:choice maxOccurs="unbounded">
+                <xs:element name="grid" />
+            </xs:choice>
+            <xs:attribute ref="reference_width"></xs:attribute>
+            <xs:attribute ref="reference_height"></xs:attribute>
+            <xs:attribute ref="layer"></xs:attribute>
+        </xs:complexType>
+    </xs:element>
+
+    <xs:element name="grid">
+        <xs:complexType>
+            <xs:choice minOccurs="0" maxOccurs="unbounded">
+                <xs:element name="grid" />
+                <xs:element name="button" />
+                <xs:element name="label" />
+                <xs:element name="progressbar" />
+                <xs:element name="textfield" />
+                <xs:element name="icon" />
+            </xs:choice>
+            <xs:attribute ref="id"></xs:attribute>
+            <xs:attribute ref="x_slot"></xs:attribute>
+            <xs:attribute ref="y_slot"></xs:attribute>
+            <xs:attribute ref="x_dim"></xs:attribute>
+            <xs:attribute ref="y_dim"></xs:attribute>
+            <xs:attribute ref="x_size"></xs:attribute>
+            <xs:attribute ref="y_size"></xs:attribute>
+            <xs:attribute ref="x_offset"></xs:attribute>
+            <xs:attribute ref="y_offset"></xs:attribute>
+            <xs:attribute ref="width"></xs:attribute>
+            <xs:attribute ref="height"></xs:attribute>
+            <xs:attribute ref="padding"></xs:attribute>
+            <xs:attribute ref="margin"></xs:attribute>
+            <xs:attribute ref="vert_align"></xs:attribute>
+            <xs:attribute ref="hori_align"></xs:attribute>
+            <xs:attribute ref="background"></xs:attribute>
+            <xs:attribute ref="button_normal"></xs:attribute>
+            <xs:attribute ref="button_selected"></xs:attribute>
+            <xs:attribute ref="click_sound"></xs:attribute>
+            <xs:attribute ref="hover_sound"></xs:attribute>
+        </xs:complexType>
+    </xs:element>
+
+    <xs:element name="button">
+        <xs:complexType mixed="true">
+            <xs:attribute ref="id"></xs:attribute>
+            <xs:attribute ref="x_slot"></xs:attribute>
+            <xs:attribute ref="y_slot"></xs:attribute>
+            <xs:attribute ref="x_size"></xs:attribute>
+            <xs:attribute ref="y_size"></xs:attribute>
+            <xs:attribute ref="select"></xs:attribute>
+            <xs:attribute ref="normal"></xs:attribute>
+            <xs:attribute ref="selected"></xs:attribute>
+            <xs:attribute ref="click_sound"></xs:attribute>
+            <xs:attribute ref="hover_sound"></xs:attribute>
+            <xs:attribute ref="select_mode"></xs:attribute>
+            <xs:attribute ref="icon"></xs:attribute>
+            <xs:attribute ref="icon_margin"></xs:attribute>
+            <xs:attribute ref="text_color"></xs:attribute>
+            <xs:attribute ref="text_ratio"></xs:attribute>
+            <xs:attribute ref="text_alignment"></xs:attribute>
+            <xs:attribute ref="west_neighbour"></xs:attribute>
+            <xs:attribute ref="east_neighbour"></xs:attribute>
+            <xs:attribute ref="north_neighbour"></xs:attribute>
+            <xs:attribute ref="south_neighbour"></xs:attribute>
+        </xs:complexType>
+    </xs:element>
+
+    <xs:element name="label">
+        <xs:complexType mixed="true">
+            <xs:attribute ref="id"></xs:attribute>
+            <xs:attribute ref="x_slot"></xs:attribute>
+            <xs:attribute ref="y_slot"></xs:attribute>
+            <xs:attribute ref="x_size"></xs:attribute>
+            <xs:attribute ref="y_size"></xs:attribute>
+            <xs:attribute ref="text_color"></xs:attribute>
+            <xs:attribute ref="text_ratio"></xs:attribute>
+            <xs:attribute ref="text_alignment"></xs:attribute>
+            <xs:attribute ref="background"></xs:attribute>
+        </xs:complexType>
+    </xs:element>
+
+    <xs:element name="multi_line_label">
+        <xs:complexType mixed="true">
+            <xs:attribute ref="id"></xs:attribute>
+            <xs:attribute ref="x_slot"></xs:attribute>
+            <xs:attribute ref="y_slot"></xs:attribute>
+            <xs:attribute ref="x_size"></xs:attribute>
+            <xs:attribute ref="y_size"></xs:attribute>
+            <xs:attribute ref="line_count"></xs:attribute>
+            <xs:attribute ref="text_color"></xs:attribute>
+            <xs:attribute ref="text_ratio"></xs:attribute>
+            <xs:attribute ref="text_alignment"></xs:attribute>
+            <xs:attribute ref="background"></xs:attribute>
+        </xs:complexType>
+    </xs:element>
+
+    <xs:element name="multi_line_textfield">
+        <xs:complexType mixed="true">
+            <xs:attribute ref="id"></xs:attribute>
+            <xs:attribute ref="x_slot"></xs:attribute>
+            <xs:attribute ref="y_slot"></xs:attribute>
+            <xs:attribute ref="x_size"></xs:attribute>
+            <xs:attribute ref="y_size"></xs:attribute>
+            <xs:attribute ref="line_count"></xs:attribute>
+            <xs:attribute ref="text_color"></xs:attribute>
+            <xs:attribute ref="text_ratio"></xs:attribute>
+            <xs:attribute ref="text_alignment"></xs:attribute>
+            <xs:attribute ref="background"></xs:attribute>
+        </xs:complexType>
+    </xs:element>
+
+    <xs:element name="progressbar">
+        <xs:complexType mixed="true">
+            <xs:attribute ref="id"></xs:attribute>
+            <xs:attribute ref="x_slot"></xs:attribute>
+            <xs:attribute ref="y_slot"></xs:attribute>
+            <xs:attribute ref="x_size"></xs:attribute>
+            <xs:attribute ref="y_size"></xs:attribute>
+            <xs:attribute ref="text_color"></xs:attribute>
+            <xs:attribute ref="text_ratio"></xs:attribute>
+            <xs:attribute ref="text_alignment"></xs:attribute>
+            <xs:attribute ref="background"></xs:attribute>
+            <xs:attribute ref="foreground"></xs:attribute>
+        </xs:complexType>
+    </xs:element>
+
+    <xs:element name="textfield">
+        <xs:complexType mixed="true">
+            <xs:attribute ref="id"></xs:attribute>
+            <xs:attribute ref="x_slot"></xs:attribute>
+            <xs:attribute ref="y_slot"></xs:attribute>
+            <xs:attribute ref="x_size"></xs:attribute>
+            <xs:attribute ref="y_size"></xs:attribute>
+            <xs:attribute ref="text_color"></xs:attribute>
+            <xs:attribute ref="text_ratio"></xs:attribute>
+            <xs:attribute ref="text_alignment"></xs:attribute>
+            <xs:attribute ref="background"></xs:attribute>
+        </xs:complexType>
+    </xs:element>
+
+    <xs:element name="icon">
+        <xs:complexType>
+            <xs:attribute ref="id"></xs:attribute>
+            <xs:attribute ref="x_slot"></xs:attribute>
+            <xs:attribute ref="y_slot"></xs:attribute>
+            <xs:attribute ref="x_size"></xs:attribute>
+            <xs:attribute ref="y_size"></xs:attribute>
+            <xs:attribute ref="icon"></xs:attribute>
+            <xs:attribute ref="margin"></xs:attribute>
+            <xs:attribute ref="background"></xs:attribute>
+            <xs:attribute ref="text_color"></xs:attribute>
+            <xs:attribute ref="text_ratio"></xs:attribute>
+        </xs:complexType>
+    </xs:element>
+
+</xs:schema>

src/overlay/elements/ui_files/pedals.xml

@@ -0,0 +1,11 @@
+<?xml-model href="gui.xsd" type="application/xml" schematypens="http://www.w3.org/2001/XMLSchema"?>
+<root reference_width="2560" reference_height="1440">
+    <grid x_dim="5" y_dim="2" x_offset="-600" y_offset="-350" width="250" height="300"
+        vert_align="bottom" hori_align="right" margin="10" padding="10" background="#686868">
+        <progressbar id="brake" x_slot="0" y_slot="0" y_size="2" background="#f44444"
+            foreground="#e30000"></progressbar>
+        <progressbar id="throttle" x_slot="1" y_slot="0"
+            y_size="2" background="#51fd51"
+            foreground="#00b900"></progressbar>
+    </grid>
+</root>

src/overlay/mod.rs

@@ -2,21 +2,31 @@ use crate::write_log;
 
 use self::{
     rendering::Rendering,
-    rfactor_data::{RFactorData, RadarConfig},
+    rfactor_data::{DataReceiver, RFactorData},
 };
 
-mod pipeline;
+mod elements;
 mod rendering;
 mod rfactor_data;
 
 use anyhow::Result;
 use assetpath::AssetPath;
-use std::sync::{Arc, Mutex};
+use std::{
+    cell::RefCell,
+    rc::Rc,
+    sync::{Arc, Mutex},
+};
 use ui::prelude::*;
 use vulkan_rs::prelude::*;
 
+use elements::*;
+
 use serde::{Deserialize, Serialize};
 
+pub trait UiOverlay: DataReceiver {
+    fn enable_ui(&mut self) -> Result<()>;
+}
+
 #[derive(Deserialize, Serialize)]
 pub struct OverlayConfig {
     pub radar_config: RadarConfig,
@@ -41,6 +51,8 @@ pub struct Overlay {
     rendering: Option<Rendering>,
     gui_handler: Option<Arc<GuiHandler>>,
 
+    ui_elements: Vec<Rc<RefCell<dyn UiOverlay>>>,
+
     rfactor_data: Option<RFactorData>,
 }
 
@@ -54,6 +66,7 @@ impl Overlay {
             queue: None,
             rendering: None,
             gui_handler: None,
+            ui_elements: Vec::new(),
 
             rfactor_data: None,
         }
@@ -104,13 +117,16 @@ impl Overlay {
 
         write_log!("-> create rendering: old cleared");
 
-        let rendering = Rendering::new(self.device(), self.queue(), swapchain.clone())?;
+        let mut rendering = Rendering::new(self.queue(), swapchain.clone())?;
+
+        write_log!("-> create rendering: new created");
 
         // only font is used
         let mut create_info = GuiHandlerCreateInfo::default();
         create_info.font_path = AssetPath::from(self.config.font_path.clone());
         create_info.font_path.assume_prefix_free();
 
+        // provide trait required by GuiHandler
         let ctx = Arc::new(ContextImpl::new(
             self.device(),
             self.queue(),
@@ -118,38 +134,75 @@ impl Overlay {
             rendering.images().clone(),
         ));
 
-        self.gui_handler = Some(GuiHandler::new(
-            create_info,
-            &(ctx as Arc<dyn ContextInterface>),
-        )?);
+        // create GuiHandler
+        let gui_handler = GuiHandler::new(create_info, &(ctx as Arc<dyn ContextInterface>))?;
 
-        self.rendering = Some(rendering);
+        // create ui elements
 
-        write_log!("-> create rendering: new created");
+        // create radar
+        let radar = Rc::new(RefCell::new(Radar::new(
+            self.config.radar_config,
+            self.device(),
+            self.queue(),
+            &rendering,
+        )?));
+
+        // create pedals
+        let pedals = Rc::new(RefCell::new(Pedals::new(&gui_handler)?));
+
+        // add rendering callbacks
+        rendering.add_render_callback({
+            let radar = radar.clone();
+
+            move |index| radar.borrow().render(index)
+        });
+
+        rendering.add_render_callback({
+            let gui_handler = gui_handler.clone();
+            let device = self.device();
+            let queue = self.queue();
+
+            move |index| {
+                let command_buffer =
+                    CommandBuffer::new_primary().build(device.clone(), queue.clone())?;
+
+                {
+                    let mut recorder = command_buffer.begin(VkCommandBufferBeginInfo::new(
+                        VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT
+                            | VK_COMMAND_BUFFER_USAGE_SIMULTANEOUS_USE_BIT,
+                    ))?;
+
+                    gui_handler.process(&mut recorder, &TargetMode::Mono(index as usize))?;
+                }
+
+                Ok(command_buffer)
+            }
+        });
+
+        // add ui elements to local list
+        self.ui_elements.push(radar);
+        self.ui_elements.push(pedals);
 
         write_log!("-> create rendering: end");
 
+        self.rendering = Some(rendering);
+        self.gui_handler = Some(gui_handler);
+
         Ok(())
     }
 
     pub fn render(&mut self) -> Result<()> {
-        let swapchain = self.rendering.as_ref().unwrap().swapchain().clone();
-
         if self.rfactor_data.is_none() {
-            self.rfactor_data = RFactorData::new(
-                self.config.radar_config,
-                self.device(),
-                self.rendering
-                    .as_mut()
-                    .unwrap()
-                    .single_color_pipeline()
-                    .descriptor_layout(),
-                swapchain.width(),
-                swapchain.height(),
-            )
-            .ok();
+            self.rfactor_data = RFactorData::new().ok();
 
-            write_log!("created RFactorData");
+            if let Some(data) = &mut self.rfactor_data {
+                write_log!("created RFactorData");
+
+                for receiver in self.ui_elements.iter() {
+                    receiver.borrow_mut().enable_ui()?;
+                    data.add_receiver(receiver.clone());
+                }
+            }
         }
 
         // check twice for rfactor data, because of borrowing rules
@@ -157,12 +210,7 @@ impl Overlay {
             rfactor.update()?;
         }
 
-        let objects = match &self.rfactor_data {
-            Some(rfactor) => rfactor.objects(),
-            None => Vec::new(),
-        };
-
-        self.rendering.as_mut().unwrap().render(swapchain, &objects)
+        self.rendering.as_ref().unwrap().render()
     }
 }
 

src/overlay/rendering.rs

@@ -1,5 +1,4 @@
 use anyhow::Result;
-use cgmath::{Matrix4, Vector2, Vector4};
 use vulkan_rs::prelude::*;
 
 use std::{
@@ -7,61 +6,19 @@ use std::{
     time::Duration,
 };
 
-use super::{pipeline::SingleColorPipeline, rfactor_data::RenderObject};
 use crate::write_log;
 
-#[derive(Clone)]
-pub struct PositionOnlyVertex {
-    pub position: Vector4<f32>,
-}
-
-impl PositionOnlyVertex {
-    ///
-    /// corners[0]  -  bottom left
-    /// corners[1]  -  top left
-    /// corners[2]  -  top right
-    /// corners[3]  -  bottom right
-    ///
-    pub fn from_2d_corners(ortho: Matrix4<f32>, corners: [Vector2<f32>; 4]) -> [Self; 6] {
-        [
-            Self {
-                position: ortho * corners[0].extend(0.0).extend(1.0),
-            },
-            Self {
-                position: ortho * corners[1].extend(0.0).extend(1.0),
-            },
-            Self {
-                position: ortho * corners[2].extend(0.0).extend(1.0),
-            },
-            Self {
-                position: ortho * corners[2].extend(0.0).extend(1.0),
-            },
-            Self {
-                position: ortho * corners[3].extend(0.0).extend(1.0),
-            },
-            Self {
-                position: ortho * corners[0].extend(0.0).extend(1.0),
-            },
-        ]
-    }
-}
-
 pub struct Rendering {
     swapchain: Arc<Swapchain>,
-    pipeline: SingleColorPipeline,
-    render_target: RenderTarget,
-    command_buffer: Arc<CommandBuffer>,
     images: Vec<Arc<Image>>,
 
     queue: Arc<Mutex<Queue>>,
+
+    render_callbacks: Vec<Box<dyn Fn(u32) -> Result<Arc<CommandBuffer>>>>,
 }
 
 impl Rendering {
-    pub fn new(
-        device: Arc<Device>,
-        queue: Arc<Mutex<Queue>>,
-        swapchain: Arc<Swapchain>,
-    ) -> Result<Self> {
+    pub fn new(queue: Arc<Mutex<Queue>>, swapchain: Arc<Swapchain>) -> Result<Self> {
         crate::write_log!("-> Rendering ctor: begin");
         let vk_images = swapchain.vk_images()?;
         write_log!(format!(
@@ -77,14 +34,6 @@ impl Rendering {
         };
         write_log!("-> Rendering ctor: wrapped images");
 
-        let render_target = RenderTarget::builder()
-            .add_sub_pass(
-                SubPass::builder(swapchain.width(), swapchain.height())
-                    .set_prepared_targets(&images, 0, [0.0, 0.0, 0.0, 1.0], false)
-                    .build(&device, &queue)?,
-            )
-            .build(&device)?;
-
         write_log!("-> Rendering ctor: created render_target");
 
         write_log!(format!(
@@ -95,12 +44,11 @@ impl Rendering {
 
         Ok(Self {
             swapchain,
-            pipeline: SingleColorPipeline::new(device.clone(), render_target.render_pass())?,
-            render_target,
-            command_buffer: CommandBuffer::new_primary().build(device.clone(), queue.clone())?,
             images,
 
             queue,
+
+            render_callbacks: Vec::new(),
         })
     }
 
@@ -108,62 +56,24 @@ impl Rendering {
         &self.swapchain
     }
 
-    pub fn single_color_pipeline(&self) -> &SingleColorPipeline {
-        &self.pipeline
+    pub fn add_render_callback<F>(&mut self, f: F)
+    where
+        F: Fn(u32) -> Result<Arc<CommandBuffer>> + 'static,
+    {
+        self.render_callbacks.push(Box::new(f));
     }
 
-    pub fn render(
-        &mut self,
-        swapchain: Arc<Swapchain>,
-        objects: &[&dyn RenderObject],
-    ) -> Result<()> {
+    pub fn render(&self) -> Result<()> {
         let image_index = self.swapchain.current_index();
 
-        let viewport = [VkViewport {
-            x: 0.0,
-            y: 0.0,
-            width: swapchain.width() as f32,
-            height: swapchain.height() as f32,
-            minDepth: 0.0,
-            maxDepth: 1.0,
-        }];
-
-        let scissor = [VkRect2D {
-            offset: VkOffset2D { x: 0, y: 0 },
-            extent: VkExtent2D {
-                width: swapchain.width(),
-                height: swapchain.height(),
-            },
-        }];
-
-        {
-            let mut recorder = self.command_buffer.begin(VkCommandBufferBeginInfo::new(
-                VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT
-                    | VK_COMMAND_BUFFER_USAGE_SIMULTANEOUS_USE_BIT,
-            ))?;
-
-            self.render_target
-                .begin(&recorder, VK_SUBPASS_CONTENTS_INLINE, image_index as usize);
-
-            recorder.bind_pipeline(self.pipeline.pipeline())?;
-            recorder.set_scissor(&scissor);
-            recorder.set_viewport(&viewport);
-
-            write_log!(format!("-> Rendering {} objects", objects.len()));
-
-            for object in objects {
-                let buffer = object.buffer();
-
-                recorder.bind_descriptor_sets_minimal(&[object.descriptor()]);
-                recorder.bind_vertex_buffer(buffer);
-                recorder.draw_complete_single_instance(buffer.size() as u32);
-            }
-
-            self.render_target.end(&recorder);
-        }
+        let command_buffers: Vec<Arc<CommandBuffer>> = self
+            .render_callbacks
+            .iter()
+            .map(|c| c(image_index))
+            .collect::<Result<Vec<Arc<CommandBuffer>>>>()?;
 
         let queue = self.queue.lock().unwrap();
-        queue.minimal_submit(Duration::from_secs(10), &[self.command_buffer.clone()])?;
+        queue.minimal_submit(Duration::from_secs(10), &command_buffers)?;
 
         Ok(())
     }

src/overlay/rfactor_data.rs

@@ -1,196 +1,52 @@
 use anyhow::Result;
-use cgmath::{ortho, vec2, vec3, vec4, Deg, InnerSpace, Matrix4, Rad, Vector2, Vector3};
 use rfactor_sm_reader::*;
-use vulkan_rs::prelude::*;
 
-use serde::{Deserialize, Serialize};
+use std::{cell::RefCell, rc::Rc, time::Instant};
 
-use std::{sync::Arc, time::Instant};
-
-use super::rendering::PositionOnlyVertex;
 use crate::write_log;
 
-fn convert_vec(v: rF2Vec3) -> Vector3<f32> {
-    vec3(v.x as f32, v.y as f32, v.z as f32)
-}
+use super::UiOverlay;
 
-pub trait RenderObject {
-    fn descriptor(&self) -> &Arc<DescriptorSet>;
-    fn buffer(&self) -> &Arc<Buffer<PositionOnlyVertex>>;
-}
+pub trait DataReceiver {
+    fn scoring_update(&mut self, vehicle_scoring: &[VehicleScoringInfoV01]) -> Result<()>;
 
-#[derive(Deserialize, Serialize, Clone, Copy, Debug)]
-pub struct RadarConfig {
-    pub radar_scale: f32,
-    pub radar_center_factor: f32,
-    pub radar_transparency: f32,
-    pub height_scale: f32,
-    pub width_scale: f32,
-    pub radar_car_distance: f32,
-    pub safe_color: Vector3<f32>,
-    pub danger_color: Vector3<f32>,
-}
-
-impl RadarConfig {
-    pub const fn new() -> Self {
-        Self {
-            radar_scale: 1.0,
-            radar_center_factor: 0.25,
-            radar_transparency: 0.5,
-            height_scale: 0.15,
-            width_scale: 0.4,
-            radar_car_distance: 20.0,
-            safe_color: vec3(0.0, 0.75, 0.0),
-            danger_color: vec3(0.75, 0.0, 0.0),
-        }
-    }
+    fn telemetry_update(
+        &mut self,
+        player_id: Option<i32>,
+        telemetries: &[rF2VehicleTelemetry],
+    ) -> Result<()>;
 }
 
 pub struct RFactorData {
-    // config
-    config: RadarConfig,
-
     // rf2 memory mapped data
     telemetry_reader: TelemetryReader,
     scoring_reader: ScoringReader,
 
-    // radar objects
-    background: Option<RadarObject>,
-    player_car: RadarObject,
-    cars: Vec<RadarObject>,
-
-    // buffer car objects, to prevent recreating them every update
-    car_handles: Vec<RadarObject>,
-
-    // game info
+    start_time: Instant,
     player_id: Option<i32>,
 
-    // math objects
-    radar_center: Vector2<f32>,
-    ortho: Matrix4<f32>,
-    _window_width: u32,
-    _window_height: u32,
-    radar_extent: f32,
-    car_width: f32,
-    car_height: f32,
-
-    start_time: Instant,
-
-    device: Arc<Device>,
-    descriptor_layout: Arc<DescriptorSetLayout>,
+    receivers: Vec<Rc<RefCell<dyn UiOverlay>>>,
 }
 
 impl RFactorData {
-    pub fn new(
-        config: RadarConfig,
-        device: Arc<Device>,
-        descriptor_layout: &Arc<DescriptorSetLayout>,
-        width: u32,
-        height: u32,
-    ) -> Result<Self> {
+    pub fn new() -> Result<Self> {
         write_log!(" =================== create RFactorData ===================");
 
-        let radar_extent = width as f32 * 0.075 * config.radar_scale;
-        let car_height = radar_extent * config.height_scale;
-        let car_width = car_height * config.width_scale;
-        let radar_center = vec2(
-            width as f32 / 2.0,
-            height as f32 / 2.0 - height as f32 * config.radar_center_factor,
-        );
-
-        let flip_y = matrix4_from_diagonal(vec3(1.0, -1.0, 1.0));
-        let ortho = flip_y * ortho(0.0, width as f32, 0.0, height as f32, -1.0, 1.0);
         let start_time = Instant::now();
 
         Ok(Self {
-            config,
-
             telemetry_reader: TelemetryReader::new(start_time.elapsed().as_secs_f32())?,
             scoring_reader: ScoringReader::new(start_time.elapsed().as_secs_f32())?,
 
-            background: if config.radar_transparency == 0.0 {
-                None
-            } else {
-                Some(RadarObject::new(
-                    device.clone(),
-                    descriptor_layout,
-                    PositionOnlyVertex::from_2d_corners(
-                        ortho * Matrix4::from_translation(radar_center.extend(0.0)),
-                        [
-                            vec2(-radar_extent, -radar_extent),
-                            vec2(-radar_extent, radar_extent),
-                            vec2(radar_extent, radar_extent),
-                            vec2(radar_extent, -radar_extent),
-                        ],
-                    ),
-                    [0.5, 0.5, 0.5, config.radar_transparency],
-                )?)
-            },
-            player_car: RadarObject::new(
-                device.clone(),
-                descriptor_layout,
-                PositionOnlyVertex::from_2d_corners(
-                    ortho * Matrix4::from_translation(radar_center.extend(0.0)),
-                    [
-                        vec2(-car_width, -car_height),
-                        vec2(-car_width, car_height),
-                        vec2(car_width, car_height),
-                        vec2(car_width, -car_height),
-                    ],
-                ),
-                [0.0, 0.9, 0.0, 0.9],
-            )?,
-            cars: Vec::new(),
-            car_handles: Vec::new(),
-
+            start_time,
             player_id: None,
 
-            radar_center,
-            ortho,
-            _window_width: width,
-            _window_height: height,
-            radar_extent,
-            car_width,
-            car_height,
-
-            start_time,
-
-            device,
-            descriptor_layout: descriptor_layout.clone(),
+            receivers: Vec::new(),
         })
     }
 
-    fn create_car_object(&self, offset: Vector2<f32>, color: [f32; 4]) -> Result<RadarObject> {
-        write_log!(" =================== create car object ===================");
-
-        RadarObject::new(
-            self.device.clone(),
-            &self.descriptor_layout,
-            Self::create_car_vertices(
-                self.ortho
-                    * Matrix4::from_translation(self.radar_center.extend(0.0))
-                    * Matrix4::from_translation(offset.extend(0.0)),
-                self.car_width,
-                self.car_height,
-            ),
-            color,
-        )
-    }
-
-    fn create_car_vertices(
-        mvp: Matrix4<f32>,
-        car_width: f32,
-        car_height: f32,
-    ) -> [PositionOnlyVertex; 6] {
-        PositionOnlyVertex::from_2d_corners(
-            mvp,
-            [
-                vec2(-car_width, -car_height),
-                vec2(-car_width, car_height),
-                vec2(car_width, car_height),
-                vec2(car_width, -car_height),
-            ],
-        )
+    pub fn add_receiver(&mut self, receiver: Rc<RefCell<dyn UiOverlay>>) {
+        self.receivers.push(receiver);
     }
 
     fn now(&self) -> f32 {
@@ -200,8 +56,6 @@ impl RFactorData {
     pub fn update(&mut self) -> Result<()> {
         write_log!(" =================== update RFactorData ===================");
 
-        let mut should_render = false;
-
         // get scoring info
         if let Some((scoring_info, vehicle_scorings)) =
             self.scoring_reader.vehicle_scoring(self.now())
@@ -224,223 +78,23 @@ impl RFactorData {
                 }
             }
 
-            if let Some(id) = &self.player_id {
-                if let Some(vehicle_scoring) =
-                    vehicle_scorings.iter().find(|scoring| scoring.mID == *id)
-                {
-                    should_render = vehicle_scoring.mInPits != 0;
-                }
+            for receiver in self.receivers.iter() {
+                receiver.borrow_mut().scoring_update(&vehicle_scorings)?;
             }
         }
 
-        // if player id is set (a map is loaded), check telemetry data
-        if let Some(player_id) = &self.player_id {
-            write_log!("before telemetry update");
-            if let Some(telemetries) = self.telemetry_reader.query_telemetry(self.now()) {
-                write_log!("new telemetry update");
+        // check telemetry data
+        write_log!("before telemetry update");
+        if let Some(telemetries) = self.telemetry_reader.query_telemetry(self.now()) {
+            write_log!("new telemetry update");
 
-                self.cars.clear();
-
-                if should_render {
-                    // make sure there are enough cars in buffer
-                    if self.car_handles.len() < telemetries.len() {
-                        let size_diff = telemetries.len() - self.car_handles.len();
-
-                        for _ in 0..size_diff {
-                            self.car_handles.push(
-                                self.create_car_object(vec2(0.0, 0.0), [0.0, 0.0, 0.0, 0.0])?,
-                            );
-                        }
-                    }
-
-                    let mut player_position = CarPosition::default();
-                    let mut other_positions = Vec::new();
-
-                    for telemetry in telemetries {
-                        let car = CarPosition::new(
-                            convert_vec(telemetry.position),
-                            [
-                                convert_vec(telemetry.orientation[0]),
-                                convert_vec(telemetry.orientation[1]),
-                                convert_vec(telemetry.orientation[2]),
-                            ],
-                        );
-
-                        if telemetry.id == *player_id {
-                            player_position = car
-                        } else {
-                            other_positions.push(car);
-                        }
-                    }
-
-                    // update radar objects
-                    let mut buffer_car_index = 0;
-
-                    for other_position in other_positions {
-                        let diff = player_position.position - other_position.position;
-                        let distance = diff.magnitude();
-
-                        // check if car is close enough to the players car
-                        if distance < self.config.radar_car_distance {
-                            let offset =
-                                diff.xz() * (self.radar_extent / self.config.radar_car_distance);
-
-                            let buffered_car = self.car_handles[buffer_car_index].clone();
-                            buffer_car_index += 1;
-                            buffered_car.update(
-                                self.ortho,
-                                offset,
-                                player_position.rotation,
-                                other_position.rotation,
-                                self.radar_center,
-                                self.car_width,
-                                self.car_height,
-                                [0.9, 0.9, 0.0, 0.9],
-                            )?;
-
-                            self.cars.push(buffered_car);
-                        }
-                    }
-                }
+            for receiver in self.receivers.iter() {
+                receiver
+                    .borrow_mut()
+                    .telemetry_update(self.player_id, &telemetries)?;
             }
         }
 
         Ok(())
     }
-
-    pub fn objects(&self) -> Vec<&dyn RenderObject> {
-        write_log!(" =================== get objects of RFactorData ===================");
-
-        let mut objects: Vec<&dyn RenderObject> = Vec::new();
-
-        // only draw radar when player is loaded into a map
-        if let Some(_player_id) = &self.player_id {
-            // only draw radar when any car is near enough
-            if !self.cars.is_empty() {
-                if let Some(background) = &self.background {
-                    objects.push(background);
-                }
-
-                for other_player_cars in &self.cars {
-                    objects.push(other_player_cars);
-                }
-
-                objects.push(&self.player_car);
-            }
-        }
-
-        objects
-    }
-}
-
-#[derive(Clone)]
-struct RadarObject {
-    descriptor_set: Arc<DescriptorSet>,
-
-    // uniform buffer
-    color_buffer: Arc<Buffer<f32>>,
-
-    // vertex buffer
-    position_buffer: Arc<Buffer<PositionOnlyVertex>>,
-}
-
-impl RadarObject {
-    fn new(
-        device: Arc<Device>,
-        descriptor_layout: &Arc<DescriptorSetLayout>,
-        positions: [PositionOnlyVertex; 6],
-        color: [f32; 4],
-    ) -> Result<Self> {
-        let color_buffer = Buffer::builder()
-            .set_usage(VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT)
-            .set_memory_usage(MemoryUsage::CpuOnly)
-            .set_data(&color)
-            .build(device.clone())?;
-
-        let position_buffer = Buffer::builder()
-            .set_usage(VK_BUFFER_USAGE_VERTEX_BUFFER_BIT)
-            .set_memory_usage(MemoryUsage::CpuOnly)
-            .set_data(&positions)
-            .build(device.clone())?;
-
-        let descriptor_pool = DescriptorPool::builder()
-            .set_layout(descriptor_layout.clone())
-            .build(device.clone())?;
-
-        let descriptor_set = descriptor_pool.prepare_set().allocate()?;
-        descriptor_set.update(&[DescriptorWrite::uniform_buffers(0, &[&color_buffer])])?;
-
-        Ok(Self {
-            descriptor_set,
-            color_buffer,
-            position_buffer,
-        })
-    }
-
-    pub fn update(
-        &self,
-
-        ortho: Matrix4<f32>,
-        offset: Vector2<f32>,
-        player_rotation: impl Into<Deg<f32>>,
-        rotation: impl Into<Deg<f32>>,
-        radar_center: Vector2<f32>,
-        car_width: f32,
-        car_height: f32,
-        color: [f32; 4],
-    ) -> Result<()> {
-        self.position_buffer
-            .fill(&RFactorData::create_car_vertices(
-                ortho
-                    * Matrix4::from_translation(radar_center.extend(0.0))
-                    * Matrix4::from_angle_z(-player_rotation.into())
-                    * Matrix4::from_translation(offset.extend(0.0))
-                    * Matrix4::from_angle_z(rotation.into()),
-                car_width,
-                car_height,
-            ))?;
-        self.color_buffer.fill(&color)
-    }
-}
-
-impl RenderObject for RadarObject {
-    fn descriptor(&self) -> &Arc<DescriptorSet> {
-        &self.descriptor_set
-    }
-
-    fn buffer(&self) -> &Arc<Buffer<PositionOnlyVertex>> {
-        &self.position_buffer
-    }
-}
-
-struct CarPosition {
-    pub position: Vector3<f32>,
-    pub rotation: Rad<f32>,
-}
-
-impl CarPosition {
-    fn new(position: Vector3<f32>, orientation: [Vector3<f32>; 3]) -> Self {
-        Self {
-            position,
-            rotation: Rad(orientation[2].x.atan2(orientation[2].z)),
-        }
-    }
-}
-
-impl Default for CarPosition {
-    fn default() -> Self {
-        Self {
-            position: vec3(0.0, 0.0, 0.0),
-            rotation: Rad(0.0),
-        }
-    }
-}
-
-const fn matrix4_from_diagonal(diagonal: Vector3<f32>) -> Matrix4<f32> {
-    Matrix4::from_cols(
-        vec4(diagonal.x, 0.0, 0.0, 0.0),
-        vec4(0.0, diagonal.y, 0.0, 0.0),
-        vec4(0.0, 0.0, diagonal.z, 0.0),
-        vec4(0.0, 0.0, 0.0, 1.0),
-    )
 }