Rotate camera with mouse

examples/testbed/src/free_fly_camera.rs

@@ -1,14 +1,21 @@
 use std::ops::Deref;
 
-use edict::{World, Component};
-use lyra_engine::{math::{Vec3, Angle, Quat}, input::{InputButtons, KeyCode, MouseMotion}, ecs::{SimpleSystem, components::camera::CameraComponent, EventQueue}, game::Game, plugin::Plugin};
+use edict::{Component, World};
+use lyra_engine::{
+    ecs::{components::camera::CameraComponent, EventQueue, SimpleSystem},
+    game::Game,
+    input::{InputButtons, KeyCode, MouseMotion},
+    math::{Angle, Quat, Vec3},
+    plugin::Plugin,
+};
 use tracing::debug;
 
 #[derive(Clone, Component)]
 pub struct FreeFlyCamera {
     pub speed: f32,
     pub look_speed: f32,
-    pub look_with_keys: bool
+    pub mouse_sensitivity: f32,
+    pub look_with_keys: bool,
 }
 
 impl Default for FreeFlyCamera {
@@ -16,17 +23,19 @@ impl Default for FreeFlyCamera {
         Self {
             speed: 0.07,
             look_speed: 0.01,
-            look_with_keys: false
+            mouse_sensitivity: 0.03,
+            look_with_keys: false,
         }
     }
 }
 
 impl FreeFlyCamera {
-    pub fn new(speed: f32, look_speed: f32, look_with_keys: bool) -> Self {
+    pub fn new(speed: f32, look_speed: f32, mouse_sensitivity: f32, look_with_keys: bool) -> Self {
         Self {
             speed,
             look_speed,
-            look_with_keys
+            mouse_sensitivity,
+            look_with_keys,
         }
     }
 }
@@ -37,13 +46,15 @@ impl SimpleSystem for FreeFlyCameraController {
     fn execute_mut(&mut self, world: &mut World) -> anyhow::Result<()> {
         let mut camera_rot = Vec3::default();
 
-        let keys = world.get_resource::<InputButtons<KeyCode>>()
-            .map(|r| r.deref().clone());
-        if keys.is_none() {
-            return Ok(());
-        }
-        let keys = keys.unwrap();
+        let events = world
+            .get_resource_mut::<EventQueue>()
+            .and_then(|q| q.read_events::<MouseMotion>());
 
+        let keys = world
+            .get_resource::<InputButtons<KeyCode>>()
+            .map(|r| r.deref().clone());
+
+        if let Some(keys) = keys.as_ref() {
             if keys.is_pressed(KeyCode::Left) {
                 camera_rot.y += 1.0;
             }
@@ -67,16 +78,19 @@ impl SimpleSystem for FreeFlyCameraController {
             if keys.is_pressed(KeyCode::Q) {
                 camera_rot.z += 1.0;
             }
+        }
 
-        let camera_rot = camera_rot.normalize();
-        
-        for (cam, fly) in world.query_mut::<(&mut CameraComponent, &mut FreeFlyCamera)>().iter_mut() {
+        for (cam, fly) in world
+            .query_mut::<(&mut CameraComponent, &mut FreeFlyCamera)>()
+            .iter_mut()
+        {
             let forward = cam.transform.forward();
             let left = cam.transform.left();
             let up = cam.transform.up();
 
+            // handle camera movement
+            if let Some(keys) = keys.as_ref() {
                 let mut velocity = Vec3::ZERO;
-
                 if keys.is_pressed(KeyCode::A) {
                     velocity -= left;
                 }
@@ -104,10 +118,21 @@ impl SimpleSystem for FreeFlyCameraController {
                 if velocity != Vec3::ZERO {
                     cam.transform.translation += velocity.normalize() * fly.speed;
                 }
+            }
 
-            if !camera_rot.is_nan() {
-                let look_velocity = camera_rot.normalize() * fly.look_speed;
-                cam.transform.rotation *= Quat::from_rotation_x(look_velocity.x) * Quat::from_rotation_y(look_velocity.y) * Quat::from_rotation_z(look_velocity.z);
+            // handle camera rotation
+            if let Some(mut events) = events.clone() {
+                while let Some(motion) = events.pop_front() {
+                    camera_rot.x -= motion.delta.y * fly.mouse_sensitivity;
+                    camera_rot.y -= motion.delta.x * fly.mouse_sensitivity;
+                }
+            }
+
+            if camera_rot != Vec3::ZERO {
+                let look_velocity = camera_rot * fly.look_speed;
+                cam.transform.rotation *= Quat::from_rotation_x(look_velocity.x)
+                    * Quat::from_rotation_y(look_velocity.y)
+                    * Quat::from_rotation_z(look_velocity.z);
             }
         }
 

examples/testbed/src/main.rs

@@ -23,11 +23,11 @@ pub const INDICES: &[u16] = &[
 #[async_std::main]
 async fn main() {
     let setup_sys = |world: &mut World| -> anyhow::Result<()> {
-        /* {
+        {
             let mut window_options = world.get_resource_mut::<Ct<WindowOptions>>().unwrap();
             window_options.cursor_grab = CursorGrabMode::Confined;
             window_options.cursor_visible = false;
-        } */
+        }
 
         let mut resman = world.get_resource_mut::<ResourceManager>().unwrap();
         //let diffuse_texture = resman.request::<Texture>("assets/happy-tree.png").unwrap();

src/ecs/components/free_fly_camera.rs

@@ -0,0 +1,28 @@
+use edict::Component;
+
+use crate::{math::{Angle, Transform}, render::camera::CameraProjectionMode};
+
+#[derive(Clone, Component)]
+pub struct FreeFlyCamera {
+    pub transform: Transform,
+    pub fov: Angle,
+    pub mode: CameraProjectionMode,
+    pub speed: f32,
+}
+
+impl Default for FreeFlyCamera {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl FreeFlyCamera {
+    pub fn new() -> Self {
+        Self {
+            transform: Transform::default(),
+            fov: Angle::Degrees(45.0),
+            mode: CameraProjectionMode::Perspective,
+            speed: 1.5,
+        }
+    }
+}

src/ecs/components/mod.rs

@@ -2,3 +2,4 @@ pub mod mesh;
 pub mod model;
 pub mod transform;
 pub mod camera;
+pub mod free_fly_camera;

src/game.rs

@@ -2,7 +2,7 @@ use std::{sync::Arc, collections::VecDeque};
 
 use async_std::task::block_on;
 
-use tracing::{info, error, Level};
+use tracing::{info, error, Level, debug};
 use tracing_appender::non_blocking;
 use tracing_subscriber::{
     layer::SubscriberExt,
@@ -12,7 +12,7 @@ use tracing_subscriber::{
 
 use winit::{window::{WindowBuilder, Window}, event::{Event, WindowEvent, KeyboardInput, ElementState, VirtualKeyCode, DeviceEvent}, event_loop::{EventLoop, ControlFlow}};
 
-use crate::{render::renderer::{Renderer, BasicRenderer}, input_event::InputEvent, ecs::{SimpleSystem, SystemDispatcher, EventQueue, Events}, plugin::Plugin};
+use crate::{render::{renderer::{Renderer, BasicRenderer}, window::WindowOptions}, input_event::InputEvent, ecs::{SimpleSystem, SystemDispatcher, EventQueue, Events}, plugin::Plugin, change_tracker::Ct};
 
 pub struct Controls<'a> {
     pub world: &'a mut edict::World,
@@ -91,21 +91,6 @@ impl GameLoop {
                 Some(ControlFlow::Exit)
             },
 
-            // TODO: Create system for this? or maybe merge into input system, idk
-            InputEvent::CursorEntered { .. } => {
-                let state = self.world.with_resource(WindowState::new);
-                state.is_cursor_inside_window = true;
-                
-                None
-            },
-
-            InputEvent::CursorLeft { .. } => {
-                let state = self.world.with_resource(WindowState::new);
-                state.is_cursor_inside_window = false;
-                
-                None
-            }
-
             _ => {
                 //debug!("Got unhandled input event: \"{:?}\"", event);
 
@@ -122,16 +107,20 @@ impl GameLoop {
         *control_flow = ControlFlow::Poll;
         match event {
             Event::DeviceEvent { device_id, event: DeviceEvent::MouseMotion { delta } } => {
+                //debug!("motion: {delta:?}");
                 // convert a MouseMotion event to an InputEvent
                 // make sure that the mouse is inside the window and the mouse has focus before reporting mouse motion
-                let trigger = matches!(self.world.get_resource::<WindowState>(), Some(window_state)
-                    if window_state.is_focused && window_state.is_cursor_inside_window);
+                /* let trigger = matches!(self.world.get_resource::<WindowState>(), Some(window_state)
+                    if window_state.is_focused && window_state.is_cursor_inside_window); */
+
+                let trigger = matches!(self.world.get_resource::<Ct<WindowOptions>>(), Some(window)
+                    if window.focused && window.cursor_inside_window);
 
                 if trigger {
-                    let event_queue = self.world.with_resource(Events::<InputEvent>::new);
+                    let mut event_queue = self.world.get_resource_mut::<EventQueue>().unwrap();
 
                     let input_event = InputEvent::MouseMotion { device_id, delta, };
-                    event_queue.push_back(input_event);
+                    event_queue.trigger_event(input_event);
                 }
             },
             Event::WindowEvent {

src/input.rs

@@ -258,8 +258,6 @@ impl InputSystem {
                     delta: Vec2::new(delta.0 as f32, delta.1 as f32)
                 };
 
-                debug!("delta: {:?}", delta);
-
                 event_queue.trigger_event(delta);
             },
             InputEvent::CursorMoved { position, .. } => {

src/render/window.rs

@@ -1,4 +1,4 @@
-use std::sync::Arc;
+use std::{sync::Arc, collections::VecDeque};
 
 use glam::{Vec2, IVec2};
 use tracing::{warn, error};
@@ -6,7 +6,7 @@ use winit::{window::{Window, Fullscreen}, dpi::{LogicalPosition, LogicalSize, Ph
 
 pub use winit::window::{CursorGrabMode, CursorIcon, Icon, Theme, WindowButtons, WindowLevel};
 
-use crate::{plugin::Plugin, change_tracker::Ct};
+use crate::{plugin::Plugin, change_tracker::Ct, ecs::EventQueue, input_event::InputEvent};
 
 #[derive(Default, Clone)]
 pub enum WindowMode {
@@ -171,6 +171,12 @@ pub struct WindowOptions {
     /// Change the window level.
     /// This is just a hint to the OS, and the system could ignore it.
     pub level: WindowLevel,
+
+    /// Get/set the window's focused state.
+    pub focused: bool,
+
+    /// Get whether or not the cursor is inside the window.
+    pub cursor_inside_window: bool,
 }
 
 impl Default for WindowOptions {
@@ -198,6 +204,8 @@ impl Default for WindowOptions {
             title: "Lyra Engine Game".to_string(),
             icon: None,
             level: WindowLevel::Normal,
+            focused: false,
+            cursor_inside_window: false,
         }
     }
 }
@@ -252,10 +260,11 @@ fn set_cursor_grab(window: &Window, grab: &mut CursorGrabMode) -> anyhow::Result
     Ok(())
 }
 
-/// if the window is set to confine the cursor, and the cursor is invisible,
-/// set the cursor position to the center of the screen.
+/// if the window is set to confine the cursor, the cursor is invisible,
+/// and the window is focused, set the cursor position to the center of the screen.
 fn center_mouse(window: &Window, options: &WindowOptions) {
-    if options.cursor_grab == CursorGrabMode::Confined && !options.cursor_visible {
+    if options.cursor_grab == CursorGrabMode::Confined && !options.cursor_visible
+            && options.focused {
         let size = window.inner_size();
         let middle = PhysicalPosition {
             x: size.width / 2,
@@ -269,11 +278,14 @@ fn window_updater_system(world: &mut edict::World) -> anyhow::Result<()> {
     if let (Some(window), Some(opts)) = (world.get_resource::<Arc<Window>>(), world.get_resource::<Ct<WindowOptions>>()) {
         // if the options changed, update the window
         if opts.peek_changed() {
-            drop(opts); // avoid attempting to get a RefMut when we already have a Ref out.
+            drop(opts); // drop the Ref, we're about to get a RefMut
 
             // now we can get it mutable, this will trigger the ChangeTracker, so it will be reset at the end of this scope.
             let mut opts = world.get_resource_mut::<Ct<WindowOptions>>().unwrap();
 
+            if opts.focused {
+                window.focus_window();
+            }
             window.set_content_protected(opts.content_protected);
             set_cursor_grab(&window, &mut opts.cursor_grab)?;
             match window.set_cursor_hittest(opts.cursor_hittest) {
@@ -324,6 +336,31 @@ fn window_updater_system(world: &mut edict::World) -> anyhow::Result<()> {
 
             center_mouse(&window, &opts);
         } else {
+            drop(opts); // drop the Ref, we're about to get a RefMut
+            let mut opts = world.get_resource_mut::<Ct<WindowOptions>>().unwrap();
+
+            if let Some(event_queue) = world.get_resource_mut::<EventQueue>() {
+                if let Some(mut events) = event_queue.read_events::<InputEvent>() {
+                    while let Some(ev) = events.pop_front() {
+                        match ev {
+                            InputEvent::CursorEntered { .. } => {
+                                opts.cursor_inside_window = true;
+                            },
+                            InputEvent::CursorLeft { .. } => {
+                                opts.cursor_inside_window = false;
+                            },
+                            _ => {},
+                        }
+                    }
+                }
+            }
+
+            // update the stored state of the window to match the actual window
+
+            opts.focused = window.has_focus();
+
+            opts.reset();
+
             center_mouse(&window, &opts);
         }
     }