FFI for dynamic libraries

src/dynamic_data/libraries/script_resolver.rs

@@ -3,12 +3,12 @@ use std::sync::Arc;
 
 use crate::dynamic_data::{ItemScript, Script, ScriptOwnerData};
 use crate::static_data::Item;
-use crate::{PkmnResult, StringKey};
+use crate::{PkmnResult, StringKey, ValueIdentifiable, ValueIdentifier};
 
 /// A script resolver deals with the resolving of scripts. These scripts are non-hardcoded
 /// implementations of different effects in Pokemon. This allows for things such as generational
 /// differences, and custom implementations.
-pub trait ScriptResolver: Debug {
+pub trait ScriptResolver: Debug + ValueIdentifiable {
     /// Loads a standard script with a given unique combination of category and key. If no script
     /// can be created with this combination, returns None.
     fn load_script(
@@ -55,7 +55,16 @@ pub enum ScriptCategory {
 
 /// A basic empty script resolver, that always returns None.
 #[derive(Debug)]
-pub struct EmptyScriptResolver {}
+pub struct EmptyScriptResolver {
+    /// A unique identifier so we know what value this is.
+    pub identifier: ValueIdentifier,
+}
+
+impl ValueIdentifiable for EmptyScriptResolver {
+    fn value_identifier(&self) -> ValueIdentifier {
+        self.identifier
+    }
+}
 
 impl ScriptResolver for EmptyScriptResolver {
     fn load_script(