feat: add key-controlled sliding animation for helicopter door

src/main.rs

@@ -376,6 +376,7 @@ fn main() {
         // The main rendering loop
         let first_frame_time = std::time::Instant::now();
         let mut previous_frame_time = first_frame_time;
+        let mut door_slide = 0.0f32;
         loop {
             // Compute time passed since the previous frame and since the start of the program
             let now = std::time::Instant::now();
@@ -428,6 +429,7 @@ fn main() {
                 // clamp pitch to avoid flipping
                 let pitch_limit = std::f32::consts::FRAC_PI_2 - 0.01;
                 cam_pitch = cam_pitch.clamp(-pitch_limit, pitch_limit);
+                door_slide = if keys.contains(&O) { 2.0 } else { 0.0 };
             }
             // Handle mouse movement. delta contains the x and y movement of the mouse since last frame in pixels
             if let Ok(mut delta) = mouse_delta.lock() {
@@ -474,6 +476,14 @@ fn main() {
                             (&mut (*node.children[3]).rotation).x = elapsed * 10.0;
                         }
                     }
+                    // Animate door sliding
+                    {
+                        let mut pin = root.as_mut();
+                        let node = unsafe { pin.get_unchecked_mut() };
+                        unsafe {
+                            (*node.children[1]).position.z = door_slide;
+                        }
+                    }
                 }
 
                 // Draw scene via scene graph