working on loading screen

game/src/scenes/loading_screen.rs

@@ -1,28 +1,62 @@
-use dirty_fsm::Action;
+use chrono::{DateTime, Utc};
+use dirty_fsm::{Action, ActionFlag};
 
-use crate::context::GameContext;
+use crate::{context::GameContext, gfx::render_layer::ScreenSpaceRender};
 
 use super::{Scenes, ScreenError};
+use tracing::{debug, error, info, trace};
 
 #[derive(Debug)]
 pub struct LoadingScreen {
+    start_timestamp: Option<DateTime<Utc>>
+}
 
+impl LoadingScreen {
+    /// Construct a new LoadingScreen
+    pub fn new() -> Self {
+        Self {
+            start_timestamp: None
+        }
+    }
 }
 
 impl Action<Scenes, ScreenError, GameContext> for LoadingScreen {
     fn on_register(&mut self) -> Result<(), ScreenError> {
-        todo!()
+        debug!("Registered");
+        Ok(())
     }
 
-    fn on_first_run(&mut self, context: &mut GameContext) -> Result<(), ScreenError> {
-        todo!()
+    fn on_first_run(&mut self, context: &GameContext) -> Result<(), ScreenError> {
+        debug!("Running LoadingScreen for the first time");
+
+        // Keep track of when this screen is opened
+        self.start_timestamp = Some(Utc::now());
+
+        Ok(())
     }
 
-    fn execute(&mut self, delta: &chrono::Duration, context: &mut GameContext) -> Result<dirty_fsm::ActionFlag<Scenes>, ScreenError> {
-        todo!()
+    fn execute(
+        &mut self,
+        delta: &chrono::Duration,
+        context: &GameContext,
+    ) -> Result<dirty_fsm::ActionFlag<Scenes>, ScreenError> {
+        trace!("execute() called on LoadingScreen");
+        self.render_screen_space(&mut context.renderer.borrow_mut());
+        Ok(ActionFlag::Continue)
     }
 
     fn on_finish(&mut self, interrupted: bool) -> Result<(), ScreenError> {
+        debug!("Finished LoadingScreen");
+
+        // Reset the start timestamp
+        self.start_timestamp = None;
+
+        Ok(())
+    }
+}
+
+impl ScreenSpaceRender for LoadingScreen {
+    fn render_screen_space(&self, raylib: &mut crate::utilities::non_ref_raylib::HackedRaylibHandle) {
         todo!()
     }
 }

game/src/scenes/mod.rs

@@ -1,24 +1,9 @@
-use std::{
-    borrow::Borrow,
-    cell::{Cell, RefCell, RefMut},
-    rc::Rc,
-};
-
-use dirty_fsm::{Action, StateMachine};
-use raylib::{
-    prelude::{RaylibDraw, RaylibDrawHandle},
-    RaylibHandle,
-};
-
-use crate::{context::GameContext, gfx::render_layer::{FrameUpdate, ScreenSpaceRender, WorldSpaceRender}, utilities::non_ref_raylib::HackedRaylibHandle};
-
-use self::fsm_error_screen::FsmErrorScreen;
+use dirty_fsm::StateMachine;
+use crate::context::GameContext;
+use self::{fsm_error_screen::FsmErrorScreen, loading_screen::LoadingScreen};
 
 pub mod fsm_error_screen;
-// pub mod loading_screen;
-
-/// Data passed to all scenes upon render
-// pub type RenderContext<'a, 'b> = (&'b mut RaylibDrawHandle<'a>, &'b mut GameContext);
+pub mod loading_screen;
 
 /// Defines all scenes
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Default, Hash)]
@@ -40,5 +25,6 @@ pub fn build_screen_state_machine() -> Result<
 > {
     let mut machine = StateMachine::new();
     machine.add_action(Scenes::FsmErrorScreen, FsmErrorScreen::new())?;
+    machine.add_action(Scenes::LoadingScreen, LoadingScreen::new())?;
     Ok(machine)
 }