rstnode: basic asset loading and prototype sprite rendering

* restructure assets directory
* implement asset loading and dynamic conversion to sprites
* reload sprites with unique URIs to load at runtime
* provide an updated renderer API to give access to client state
* use new APIs to draw a single node frame on screen
* use colour APIs to dynamically change node frame colour

2 files changed, 30 insertions, 6 deletions

diff --git a/games/rstnode/rst-client/src/graphics/entities/mod.rs b/games/rstnode/rst-client/src/graphics/entities/mod.rs
index d3536d4f5fc2..17f26a8e5a70 100644
--- a/games/rstnode/rst-client/src/graphics/entities/mod.rs
+++ b/games/rstnode/rst-client/src/graphics/entities/mod.rs
@@ -22,20 +22,28 @@ pub struct NodeRndr {
     pub inner: Arc<Node>,
 }
 
-impl EventHandler for NodeRndr {
-    fn update(&mut self, _: &mut Context) -> GameResult<()> {
+impl Renderer for NodeRndr {
+    fn update(&mut self, _: &mut ClientState, _: &mut Context) -> GameResult<()> {
         Ok(())
     }
 
-    fn draw(&mut self, ctx: &mut Context) -> GameResult<()> {
+    fn draw(&self, s: &ClientState, ctx: &mut Context) -> GameResult<()> {
+        let frame = s.assets().find("frame/frame_s").unwrap();
+
+        frame.draw(
+            ctx,
+            DrawParam::new().dest([256.0, 256.0]).color(graphics::RED),
+        )?;
+
         let circ = Mesh::new_circle(
             ctx,
             DrawMode::fill(),
             Point2::from(&self.loc),
-            128.0,
+            64.0,
             0.1,
             graphics::WHITE,
-        ).unwrap();
+        )
+        .unwrap();
 
         circ.draw(ctx, DrawParam::new()).unwrap();
         Ok(())
diff --git a/games/rstnode/rst-client/src/graphics/mod.rs b/games/rstnode/rst-client/src/graphics/mod.rs
index 8118207d70af..095e66f1ad1f 100644
--- a/games/rstnode/rst-client/src/graphics/mod.rs
+++ b/games/rstnode/rst-client/src/graphics/mod.rs
@@ -8,9 +8,25 @@
 pub mod entities;
 pub mod ui;
 
+use crate::state::ClientState;
+use ggez::{Context, GameResult};
+
 /// A utility module to include everything required to implement a
 /// graphics entity
 pub(self) mod prelude {
-    pub use ggez::{event::EventHandler, graphics::{self, Drawable, DrawParam, Mesh, DrawMode}, Context, GameResult};
+    pub use ggez::{
+        event::EventHandler,
+        graphics::{self, DrawMode, DrawParam, Drawable, Mesh},
+        Context, GameResult,
+    };
     pub use mint::Point2;
+
+    pub use super::Renderer;
+    pub use crate::state::ClientState;
+}
+
+/// A rendering trait which is given graphics context, and game state
+pub trait Renderer {
+    fn update(&mut self, _state: &mut ClientState, _ctx: &mut Context) -> GameResult<()>;
+    fn draw(&self, _state: &ClientState, _ctx: &mut Context) -> GameResult<()>;
 }