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

1 files changed, 24 insertions, 0 deletions

diff --git a/games/rstnode/rst-client/src/error.rs b/games/rstnode/rst-client/src/error.rs
new file mode 100644
index 000000000000..08266bd5e591
--- /dev/null
+++ b/games/rstnode/rst-client/src/error.rs
@@ -0,0 +1,24 @@
+//! Various errors that can occur
+
+use std::{
+    error::Error,
+    fmt::{self, Display, Formatter},
+};
+
+/// Error loading an asset
+#[derive(Clone, Debug)]
+pub struct LoadError(String);
+
+impl<'s> From<&'s str> for LoadError {
+    fn from(s: &'s str) -> Self {
+        Self(s.into())
+    }
+}
+
+impl Display for LoadError {
+    fn fmt(&self, f: &mut Formatter) -> fmt::Result {
+        write!(f, "{}", self.0)
+    }
+}
+
+impl Error for LoadError {}