feat: add engine library base

1 files changed, 74 insertions, 0 deletions

diff --git a/engine/src/lib.rs b/engine/src/lib.rs
new file mode 100644
index 0000000..618bc75
--- /dev/null
+++ b/engine/src/lib.rs
@@ -0,0 +1,74 @@
+#![deny(clippy::all, clippy::pedantic)]
+
+use glfw::Window;
+pub use glfw::WindowSize;
+
+mod renderer;
+
+pub mod vector;
+
+pub struct Engine
+{
+    window: Window,
+}
+
+impl Engine
+{
+    /// Creates and initializes a new engine.
+    ///
+    /// # Errors
+    /// Will return `Err` if window creation or window configuration fails.
+    pub fn new(window_size: &WindowSize, window_title: &str) -> Result<Self, Error>
+    {
+        let window = Window::create(window_size, window_title)
+            .map_err(Error::CreateWindowFailed)?;
+
+        window
+            .make_context_current()
+            .map_err(Error::ConfigureWindowFailed)?;
+
+        crate::renderer::initialize(&window).map_err(Error::InitializeRendererFailed)?;
+
+        Ok(Self { window })
+    }
+
+    /// Starts the engine.
+    ///
+    /// # Errors
+    /// Will return `Err` if updating the window fails.
+    pub fn start(&self, mut func: impl FnMut()) -> Result<(), Error>
+    {
+        while !self.window.should_close() {
+            func();
+
+            crate::renderer::render();
+
+            self.window
+                .swap_buffers()
+                .map_err(Error::UpdateWindowFailed)?;
+
+            self.window
+                .poll_events()
+                .map_err(Error::UpdateWindowFailed)?;
+        }
+
+        Ok(())
+    }
+}
+
+/// Engine Error
+#[derive(Debug, thiserror::Error)]
+pub enum Error
+{
+    #[error("Failed to create window")]
+    CreateWindowFailed(#[source] glfw::Error),
+
+    #[error("Failed to configure window")]
+    ConfigureWindowFailed(#[source] glfw::Error),
+
+    #[error("Failed to initialize renderer")]
+    InitializeRendererFailed(#[source] renderer::Error),
+
+    #[error("Failed to update window")]
+    UpdateWindowFailed(#[source] glfw::Error),
+}