winit: Use user event

src/core/app/mod.rs

@@ -6,8 +6,9 @@ use super::scene::SceneContext;
 use crate::core::input::InputManager;
 use crate::core::scene::SceneManager;
 use crate::core::timer::Timer;
-use crate::game::main_scene::MainScene;
+use crate::game::scenes::test_scene::TestScene;
 use egui_winit_vulkano::{Gui, GuiConfig};
+use user_event::UserEvent;
 use vulkano::format::Format;
 use vulkano::image::ImageUsage;
 use vulkano::swapchain::PresentMode;
@@ -15,34 +16,42 @@ use vulkano_util::context::VulkanoContext;
 use vulkano_util::window::{VulkanoWindows, WindowDescriptor};
 use winit::application::ApplicationHandler;
 use winit::event::WindowEvent;
-use winit::event_loop::ActiveEventLoop;
+use winit::event_loop::{ActiveEventLoop, EventLoopProxy};
 use winit::window::WindowId;
 
+pub mod user_event;
+
 pub const DEPTH_IMAGE_ID: usize = 0;
 
 pub struct App {
     vulkan_context: Arc<VulkanContext>,
     vulkano_windows: Arc<VulkanoWindows>,
     gui: HashMap<WindowId, Gui>,
-    scene_manager: SceneManager,
+    scene_manager: HashMap<WindowId, SceneManager>,
     input_manager: Arc<InputManager>,
     timer: Arc<Timer>,
+    event_loop_proxy: EventLoopProxy<UserEvent>,
 }
 
 impl App {
-    pub fn new(vulkano_context: VulkanoContext, input_manager: InputManager) -> Self {
+    pub fn new(
+        vulkano_context: VulkanoContext,
+        input_manager: InputManager,
+        event_loop_proxy: EventLoopProxy<UserEvent>,
+    ) -> Self {
         Self {
             vulkan_context: Arc::new(VulkanContext::new(vulkano_context)),
             vulkano_windows: Arc::new(VulkanoWindows::default()),
             gui: HashMap::new(),
             input_manager: Arc::new(input_manager),
-            scene_manager: SceneManager::new(),
+            scene_manager: HashMap::new(),
             timer: Arc::new(Timer::new()),
+            event_loop_proxy,
         }
     }
 }
 
-impl ApplicationHandler for App {
+impl ApplicationHandler<UserEvent> for App {
     fn resumed(&mut self, event_loop: &ActiveEventLoop) {
         if let Some(vulkano_windows) = Arc::get_mut(&mut self.vulkano_windows) {
             let window_id = vulkano_windows.create_window(
@@ -81,10 +90,12 @@ impl ApplicationHandler for App {
                 )
             };
             self.gui.insert(window_id, gui);
-        }
 
-        self.scene_manager
-            .load_scene(Box::new(MainScene::default()));
+            let mut scene_manager = SceneManager::new();
+            scene_manager.load_scene(Box::new(TestScene::default()));
+
+            self.scene_manager.insert(window_id, scene_manager);
+        }
     }
 
     fn device_event(
@@ -139,13 +150,16 @@ impl ApplicationHandler for App {
                     &self.vulkan_context,
                     &self.input_manager,
                     &self.timer,
+                    id,
+                    &self.event_loop_proxy,
                 ));
 
-                self.scene_manager
+                let scene_manager = self.scene_manager.get_mut(&id).unwrap();
+                scene_manager
                     .load_scene_if_not_loaded(&scene_context)
                     .unwrap();
 
-                if let Some(scene) = self.scene_manager.current_scene_mut() {
+                if let Some(scene) = scene_manager.current_scene_mut() {
                     scene.update(&scene_context).unwrap();
 
                     let acquire_future = renderer.acquire(None, |_| {}).unwrap();
@@ -164,4 +178,23 @@ impl ApplicationHandler for App {
         let window = self.vulkano_windows.get_primary_window().unwrap();
         window.request_redraw();
     }
+
+    fn user_event(&mut self, event_loop: &ActiveEventLoop, event: UserEvent) {
+        match event {
+            UserEvent::CursorGrabMode(window_id, grab) => {
+                let window = self.vulkano_windows.get_window(window_id).unwrap();
+                if let Err(e) = window.set_cursor_grab(grab) {
+                    log::error!("Failed to set cursor grab: {}", e);
+                }
+            }
+            UserEvent::CursorVisible(window_id, visible) => {
+                let window = self.vulkano_windows.get_window(window_id).unwrap();
+                window.set_cursor_visible(visible);
+            }
+            UserEvent::ChangeScene(window_id, scene) => {
+                let scene_manager = self.scene_manager.get_mut(&window_id).unwrap();
+                scene_manager.load_scene(scene);
+            }
+        }
+    }
 }

src/core/app/user_event.rs

@@ -0,0 +1,9 @@
+use winit::window::{CursorGrabMode, WindowId};
+
+use crate::core::scene::Scene;
+
+pub enum UserEvent {
+    CursorGrabMode(WindowId, CursorGrabMode),
+    CursorVisible(WindowId, bool),
+    ChangeScene(WindowId, Box<dyn Scene>),
+}

src/core/scene/context.rs

@@ -9,12 +9,19 @@ use vulkano::{
     memory::allocator::StandardMemoryAllocator,
 };
 use vulkano_util::renderer::VulkanoWindowRenderer;
-
-use crate::core::{
-    app::DEPTH_IMAGE_ID, input::InputManager, render::vulkan_context::VulkanContext, timer::Timer,
+use winit::{
+    event_loop::EventLoopProxy,
+    window::{Window, WindowId},
 };
 
-pub struct SceneContext {
+use crate::core::{
+    app::{DEPTH_IMAGE_ID, user_event::UserEvent},
+    input::InputManager,
+    render::vulkan_context::VulkanContext,
+    timer::Timer,
+};
+
+pub struct SceneContext<'a> {
     pub instance: Arc<Instance>,
     pub device: Arc<Device>,
     pub graphics_queue: Arc<Queue>,
@@ -29,22 +36,28 @@ pub struct SceneContext {
     pub depth_stencil_image_view: Arc<ImageView>,
     pub input_manager: Arc<InputManager>,
     pub timer: Arc<Timer>,
+    pub event_loop_proxy: &'a EventLoopProxy<UserEvent>,
+    pub window_id: WindowId,
 }
 
-impl
+impl<'a>
     From<(
         &mut VulkanoWindowRenderer,
         &Arc<VulkanContext>,
         &Arc<InputManager>,
         &Arc<Timer>,
-    )> for SceneContext
+        WindowId,
+        &'a EventLoopProxy<UserEvent>,
+    )> for SceneContext<'a>
 {
     fn from(
-        (renderer, vulkan_context, input_manager, timer): (
+        (renderer, vulkan_context, input_manager, timer, window_id, event_loop_proxy): (
             &mut VulkanoWindowRenderer,
             &Arc<VulkanContext>,
             &Arc<InputManager>,
             &Arc<Timer>,
+            WindowId,
+            &'a EventLoopProxy<UserEvent>,
         ),
     ) -> Self {
         let (command_buffer_allocator, descriptor_set_allocator) = {
@@ -81,6 +94,8 @@ impl
             depth_stencil_image_view: renderer.get_additional_image_view(DEPTH_IMAGE_ID),
             input_manager: input_manager.clone(),
             timer: timer.clone(),
+            event_loop_proxy,
+            window_id,
         }
     }
 }

src/game/mod.rs

@@ -1,2 +1,2 @@
 pub mod assets;
-pub mod main_scene;
+pub mod scenes;

src/game/scenes/main_scene.rs

@@ -1,31 +1,26 @@
 use std::{error::Error, sync::Arc};
 
+use crate::core::app::user_event::UserEvent;
 use crate::core::render::primitives::camera::Camera3D;
 use crate::core::render::primitives::transform::Transform;
 use crate::core::render::texture::Texture;
 use crate::core::scene::Scene;
 use crate::core::scene::SceneContext;
+use crate::game::assets::square::Square;
 use egui_winit_vulkano::{Gui, egui};
 use glam::EulerRot;
 use glam::Quat;
 use glam::Vec3;
-use vulkano::format::Format;
-use vulkano::image::Image;
-use vulkano::image::ImageCreateInfo;
-use vulkano::image::ImageUsage;
-use vulkano::memory::allocator::AllocationCreateInfo;
 use vulkano::{
     command_buffer::{
         AutoCommandBufferBuilder, CommandBufferUsage, PrimaryCommandBufferAbstract,
         RenderingAttachmentInfo, RenderingInfo,
     },
-    image::view::ImageView,
     pipeline::graphics::viewport::Viewport,
     render_pass::{AttachmentLoadOp, AttachmentStoreOp},
     sync::GpuFuture,
 };
-
-use super::assets::square::Square;
+use winit::window::CursorGrabMode;
 
 pub struct MainSceneState {
     square: Square,
@@ -119,6 +114,38 @@ impl Scene for MainScene {
             scene_context.aspect_ratio,
         );
 
+        if scene_context
+            .input_manager
+            .get_virtual_input_state("mouse_left")
+            > 0.0
+        {
+            let _ = scene_context
+                .event_loop_proxy
+                .send_event(UserEvent::CursorVisible(scene_context.window_id, false));
+            let _ = scene_context
+                .event_loop_proxy
+                .send_event(UserEvent::CursorGrabMode(
+                    scene_context.window_id,
+                    CursorGrabMode::Locked,
+                ));
+        }
+
+        if scene_context
+            .input_manager
+            .get_virtual_input_state("mouse_right")
+            > 0.0
+        {
+            let _ = scene_context
+                .event_loop_proxy
+                .send_event(UserEvent::CursorVisible(scene_context.window_id, true));
+            let _ = scene_context
+                .event_loop_proxy
+                .send_event(UserEvent::CursorGrabMode(
+                    scene_context.window_id,
+                    CursorGrabMode::None,
+                ));
+        }
+
         Ok(())
     }
 

src/game/scenes/mod.rs

@@ -0,0 +1,2 @@
+pub mod main_scene;
+pub mod test_scene;

src/game/scenes/test_scene.rs

@@ -0,0 +1,111 @@
+use std::error::Error;
+
+use crate::core::app::user_event::UserEvent;
+use crate::core::scene::Scene;
+use crate::core::scene::SceneContext;
+use egui_winit_vulkano::{Gui, egui};
+use vulkano::command_buffer::AutoCommandBufferBuilder;
+use vulkano::command_buffer::CommandBufferUsage;
+use vulkano::command_buffer::RenderingAttachmentInfo;
+use vulkano::command_buffer::RenderingInfo;
+use vulkano::pipeline::graphics::viewport::Viewport;
+use vulkano::render_pass::AttachmentLoadOp;
+use vulkano::render_pass::AttachmentStoreOp;
+use vulkano::sync::GpuFuture;
+
+use super::main_scene::MainScene;
+
+pub struct MainSceneState {}
+
+#[derive(Default)]
+pub struct TestScene {
+    state: Option<MainSceneState>,
+}
+
+impl Scene for TestScene {
+    fn loaded(&self) -> bool {
+        self.state.is_some()
+    }
+
+    fn load(&mut self, scene_context: &SceneContext) -> Result<(), Box<dyn Error>> {
+        self.state = Some(MainSceneState {});
+
+        Ok(())
+    }
+
+    fn update(&mut self, scene_context: &SceneContext) -> Result<(), Box<dyn Error>> {
+        Ok(())
+    }
+
+    fn render(
+        &mut self,
+        acquire_future: Box<dyn GpuFuture>,
+        scene_context: &SceneContext,
+        gui: &mut Gui,
+    ) -> Result<Box<dyn GpuFuture>, Box<dyn Error>> {
+        let mut builder = AutoCommandBufferBuilder::primary(
+            scene_context.command_buffer_allocator.clone(),
+            scene_context.graphics_queue.queue_family_index(),
+            CommandBufferUsage::OneTimeSubmit,
+        )?;
+
+        {
+            let viewport = Viewport {
+                offset: [0.0, 0.0],
+                extent: scene_context.window_size,
+                depth_range: 0.0..=1.0,
+            };
+
+            builder
+                .begin_rendering(RenderingInfo {
+                    color_attachments: vec![Some(RenderingAttachmentInfo {
+                        load_op: AttachmentLoadOp::Clear,
+                        store_op: AttachmentStoreOp::Store,
+                        clear_value: Some([0.0, 0.0, 0.0, 1.0].into()),
+                        ..RenderingAttachmentInfo::image_view(
+                            scene_context.swapchain_image_view.clone(),
+                        )
+                    })],
+                    depth_attachment: Some(RenderingAttachmentInfo {
+                        load_op: AttachmentLoadOp::Clear,
+                        store_op: AttachmentStoreOp::DontCare,
+                        clear_value: Some([1.0].into()),
+                        ..RenderingAttachmentInfo::image_view(
+                            scene_context.depth_stencil_image_view.clone(),
+                        )
+                    }),
+                    ..Default::default()
+                })?
+                .set_viewport(0, [viewport].into_iter().collect())?;
+        }
+
+        builder.end_rendering()?;
+
+        let command_buffer = builder.build()?;
+
+        let render_future =
+            acquire_future.then_execute(scene_context.graphics_queue.clone(), command_buffer)?;
+
+        gui.immediate_ui(|gui| {
+            let ctx = gui.context();
+
+            egui::CentralPanel::default().show(&ctx, |ui| {
+                if ui.button("Start Game").clicked() {
+                    let _ = scene_context
+                        .event_loop_proxy
+                        .send_event(UserEvent::ChangeScene(
+                            scene_context.window_id,
+                            Box::new(MainScene::default()),
+                        ));
+                }
+            });
+        });
+
+        let render_future =
+            gui.draw_on_image(render_future, scene_context.swapchain_image_view.clone());
+
+        Ok(render_future)
+    }
+
+    fn unload(&mut self) {}
+}

src/main.rs

@@ -77,10 +77,11 @@ fn main() {
 
     let vulkano_context = VulkanoContext::new(vulkano_config);
 
-    let event_loop = EventLoop::new().unwrap();
+    let event_loop = EventLoop::with_user_event().build().unwrap();
     event_loop.set_control_flow(ControlFlow::Poll);
+    let proxy = event_loop.create_proxy();
 
-    let mut app = core::app::App::new(vulkano_context, input_manager);
+    let mut app = core::app::App::new(vulkano_context, input_manager, proxy);
 
     match event_loop.run_app(&mut app) {
         Ok(_) => {}