Setup a layer trait

src/layer.rs

@@ -0,0 +1,19 @@
+use eframe::{egui, Frame};
+use egui::Context;
+use egui::Ui;
+use crate::app::Application;
+
+#[allow(unused_variables)]
+pub trait Layer {
+    fn logic(&mut self, application: &mut Application, ctx: &Context, frame: &mut Frame) {
+
+    }
+
+    fn ui(&mut self, application: &mut Application, ui: &mut Ui, frame: &mut Frame) {
+
+    }
+
+    fn on_exit(&mut self, application: &mut Application) {
+
+    }
+}