winit: Use user event

src/game/scenes/main_scene.rs

@@ -0,0 +1,251 @@
+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::{
+    command_buffer::{
+        AutoCommandBufferBuilder, CommandBufferUsage, PrimaryCommandBufferAbstract,
+        RenderingAttachmentInfo, RenderingInfo,
+    },
+    pipeline::graphics::viewport::Viewport,
+    render_pass::{AttachmentLoadOp, AttachmentStoreOp},
+    sync::GpuFuture,
+};
+use winit::window::CursorGrabMode;
+
+pub struct MainSceneState {
+    square: Square,
+    instances: Vec<Transform>,
+    camera: Camera3D,
+    texture: Texture,
+    speed: f32,
+}
+
+#[derive(Default)]
+pub struct MainScene {
+    state: Option<MainSceneState>,
+}
+
+impl Scene for MainScene {
+    fn loaded(&self) -> bool {
+        self.state.is_some()
+    }
+
+    fn load(&mut self, scene_context: &SceneContext) -> Result<(), Box<dyn Error>> {
+        let square = Square::new(
+            &scene_context.device,
+            &scene_context.memory_allocator,
+            scene_context.swapchain_image_view.format(),
+            scene_context.depth_stencil_image_view.format(),
+        )?;
+
+        let num_instances = 100;
+        let instance_size = 10.0;
+        let instance_spacing = 10.0;
+        let num_instances_per_row = (num_instances as f32 / instance_spacing as f32).ceil() as u32;
+        let instances: Vec<Transform> = (0..num_instances)
+            .map(|i| Transform {
+                position: Vec3::new(
+                    (i % num_instances_per_row) as f32 * (instance_spacing + instance_size),
+                    0.0,
+                    (i / num_instances_per_row) as f32 * (instance_spacing + instance_size),
+                ),
+                rotation: Quat::from_euler(
+                    EulerRot::XYZ,
+                    0.0,
+                    rand::random_range(0.0..=360.0),
+                    0.0,
+                ),
+                scale: Vec3::new(instance_size, instance_size, instance_size),
+            })
+            .collect();
+
+        let camera = Camera3D::new(
+            scene_context.aspect_ratio,
+            std::f32::consts::FRAC_PI_2,
+            0.01,
+            1000.0,
+        );
+
+        let mut uploads = AutoCommandBufferBuilder::primary(
+            scene_context.command_buffer_allocator.clone(),
+            scene_context.graphics_queue.queue_family_index(),
+            CommandBufferUsage::OneTimeSubmit,
+        )?;
+
+        let texture = Texture::from_file(
+            &scene_context.device,
+            &scene_context.memory_allocator,
+            &mut uploads,
+            "res/textures/wooden-crate.jpg",
+        )?;
+
+        let _ = uploads
+            .build()?
+            .execute(scene_context.graphics_queue.clone())?;
+
+        self.state = Some(MainSceneState {
+            square,
+            instances,
+            camera,
+            texture,
+            speed: 50.0,
+        });
+
+        Ok(())
+    }
+
+    fn update(&mut self, scene_context: &SceneContext) -> Result<(), Box<dyn Error>> {
+        let state = self.state.as_mut().ok_or("State not found")?;
+        state.camera.update(
+            &scene_context.input_manager,
+            &scene_context.timer,
+            state.speed,
+            10.0,
+            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(())
+    }
+
+    fn render(
+        &mut self,
+        acquire_future: Box<dyn GpuFuture>,
+        scene_context: &SceneContext,
+        gui: &mut Gui,
+    ) -> Result<Box<dyn GpuFuture>, Box<dyn Error>> {
+        let state = self.state.as_ref().ok_or("State not found")?;
+
+        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())?;
+        }
+
+        let camera_uniform = state
+            .camera
+            .create_buffer(&scene_context.memory_allocator)?;
+
+        let transform_uniform =
+            Transform::create_buffer(&scene_context.memory_allocator, &state.instances)?;
+
+        state
+            .square
+            .render(
+                &mut builder,
+                &scene_context.descriptor_set_allocator,
+                &camera_uniform,
+                &transform_uniform,
+                &state.texture,
+            )
+            .unwrap();
+
+        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::Window::new("Informations")
+                .vscroll(true)
+                .show(&ctx, |ui| {
+                    ui.label(format!("Resolution: {:?}", scene_context.window_size));
+
+                    ui.label(format!("{:#?}", scene_context.input_manager));
+
+                    ui.label(format!(
+                        "Delta time: {:?}",
+                        scene_context.timer.delta_time()
+                    ));
+
+                    ui.label(format!(
+                        "Position: {:?}, Rotation: {:?}",
+                        state.camera.get_position(),
+                        state.camera.get_rotation()
+                    ));
+                });
+        });
+
+        let render_future =
+            gui.draw_on_image(render_future, scene_context.swapchain_image_view.clone());
+
+        Ok(render_future)
+    }
+
+    fn unload(&mut self) {}
+}