feat(engine): add support for text keyboard input

1 files changed, 22 insertions, 0 deletions

diff --git a/engine/src/windowing.rs b/engine/src/windowing.rs
index 3163869..53e7bc3 100644
--- a/engine/src/windowing.rs
+++ b/engine/src/windowing.rs
@@ -58,6 +58,8 @@ const MESSAGE_FROM_APP_QUEUE_SIZE: usize = 512;
 
 const MESSAGE_TO_APP_QUEUE_SIZE: usize = 16; // Increase if more messages are added
 
+const TEXT_KEY_QUEUE_SIZE: usize = 255;
+
 static CONTEXT_CREATED: AtomicBool = AtomicBool::new(false);
 
 declare_entity!(
@@ -181,6 +183,8 @@ fn update_stuff(
         .load(Ordering::Relaxed)
         .into();
 
+    keyboard.set_text_keys(iter_array_queue(&context.shared_state.text_keys));
+
     let Context {
         ref message_from_app_queue,
         ref mut display_handle,
@@ -542,6 +546,7 @@ struct SharedState
 {
     relative_mouse_pos_delta: AtomicTwoF64,
     absolute_mouse_pos: AtomicTwoF64,
+    text_keys: ArrayQueue<char>,
     is_dropped: AtomicBool,
 }
 
@@ -552,6 +557,7 @@ impl Default for SharedState
         Self {
             relative_mouse_pos_delta: AtomicTwoF64::new((0.0, 0.0)),
             absolute_mouse_pos: AtomicTwoF64::new((0.0, 0.0)),
+            text_keys: ArrayQueue::new(TEXT_KEY_QUEUE_SIZE),
             is_dropped: AtomicBool::new(false),
         }
     }
@@ -692,6 +698,22 @@ impl ApplicationHandler for App
                 event: keyboard_event,
                 is_synthetic: _,
             } => {
+                if let Some(key_text) = keyboard_event
+                    .text
+                    .filter(|_| keyboard_event.state.is_pressed())
+                {
+                    for character in key_text.chars() {
+                        if self.shared_state.text_keys.is_full() {
+                            cold_path();
+                            tracing::warn!(
+                                "Text key queue is full. Dropping oldest character"
+                            );
+                        }
+
+                        self.shared_state.text_keys.force_push(character);
+                    }
+                }
+
                 if keyboard_event.repeat {
                     return;
                 }