Create basic Game struct

Cargo.toml

@@ -6,3 +6,4 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+sdl2 = "0.35.2"

src/lib.rs

@@ -1,8 +1,59 @@
-#[cfg(test)]
-mod tests {
-    #[test]
-    fn it_works() {
-        let result = 2 + 2;
-        assert_eq!(result, 4);
+use sdl2::{video::{WindowBuildError, Window}, IntegerOrSdlError, render::Canvas, EventPump};
+
+pub struct CatboxError(String);
+
+impl From<WindowBuildError> for CatboxError {
+    fn from(e: WindowBuildError) -> Self {
+        CatboxError(format!("{}", e))
     }
 }
+
+impl From<String> for CatboxError {
+    fn from(e: String) -> Self {
+        CatboxError(e)
+    }
+}
+
+impl From<IntegerOrSdlError> for CatboxError {
+    fn from(e: IntegerOrSdlError) -> Self {
+        CatboxError(format!("{}", e))
+    }
+}
+
+pub type Result<T> = std::result::Result<T, CatboxError>;
+
+pub struct Game {
+    title: String,
+    width: u32,
+    height: u32,
+}
+
+impl Game {
+    pub fn new(title: &str, width: u32, height: u32) -> Self {
+        Self {
+            title: title.to_string(),
+            width,
+            height
+        }
+    }
+
+    pub fn run<F: Fn(&Canvas<Window>, &EventPump)>(&self, func: F) -> Result<()> {
+        let sdl_context = sdl2::init()?;
+        let video_subsystem = sdl_context.video()?;
+
+        let window = video_subsystem.window(&self.title, self.width, self.height)
+            .position_centered()
+            .build()?;
+
+        let mut canvas = window.into_canvas().build()?;
+
+        let mut event_pump = sdl_context.event_pump()?;
+
+        loop {
+            func(&canvas, &event_pump);
+            canvas.present();
+        }
+
+        Ok(())
+    }
+}