spinners and gems

kiln-core/src/builtin_scripts.rs

@@ -26,6 +26,10 @@ const PUSHER: &str = include_str!("scripts/pusher.rhai");
 /// direction comes from the object's tag, so all spinners share one compiled AST.
 const SPINNER: &str = include_str!("scripts/spinner.rhai");
 
+/// The gem behavior, embedded into the binary: a `grab()` hook that adds a gem to
+/// the player and removes the object.
+const GEM: &str = include_str!("scripts/gem.rhai");
+
 /// The tag identifying an object as the expanded form of `arch`, e.g.
 /// `"BUILTIN_pusher_east"`.
 pub(crate) fn builtin_tag(arch: Archetype) -> String {
@@ -46,6 +50,19 @@ pub(crate) fn archetype_script(arch: Archetype) -> Option<&'static str> {
     match arch {
         Archetype::Pusher(_) => Some(PUSHER),
         Archetype::Spinner(_) => Some(SPINNER),
+        Archetype::Gem => Some(GEM),
+        _ => None,
+    }
+}
+
+/// Returns the embedded script implementing `arch` as an object, or `None` if the
+/// archetype is a plain terrain cell. The one place script-backed archetypes are
+/// declared.
+pub(crate) fn archetype_script_key(arch: Archetype) -> Option<&'static str> {
+    match arch {
+        Archetype::Pusher(_) => Some("BUILTIN_pusher"),
+        Archetype::Spinner(_) => Some("BUILTIN_spinner"),
+        Archetype::Gem => Some("BUILTIN_gem"),
         _ => None,
     }
 }