feat(engine): add get keyboard input

1 files changed, 17 insertions, 0 deletions

diff --git a/engine/src/lib.rs b/engine/src/lib.rs
index bec1e30..cc629b2 100644
--- a/engine/src/lib.rs
+++ b/engine/src/lib.rs
@@ -3,6 +3,7 @@
 use std::collections::BTreeMap;
 use std::time::{Duration, Instant};
 
+use glfw::window::KeyState;
 use glfw::{Window, WindowBuilder};
 
 use crate::camera::Camera;
@@ -21,6 +22,7 @@ pub mod object;
 pub mod vector;
 pub mod vertex;
 
+pub use glfw::window::Key;
 pub use glfw::WindowSize;
 
 #[derive(Debug)]
@@ -134,6 +136,18 @@ impl Engine
         &self.delta_time
     }
 
+    /// Returns whether or not a keyboard key is currently pressed.
+    ///
+    /// # Errors
+    /// Will return `Err` if getting the key state fails.
+    pub fn is_key_pressed(&self, key: Key) -> Result<bool, Error>
+    {
+        self.window
+            .get_key(key)
+            .map(|key_state| matches!(key_state, KeyState::Pressed))
+            .map_err(Error::GetKeyStateFailed)
+    }
+
     fn update_delta_time(&mut self, prev_frame_start: &mut Option<Instant>)
     {
         let frame_start_time = Instant::now();
@@ -164,4 +178,7 @@ pub enum Error
 
     #[error("Failed to get window size")]
     GetWindowSizeFailed(#[source] glfw::Error),
+
+    #[error("Failed to get key state")]
+    GetKeyStateFailed(#[source] glfw::Error),
 }