Support for errors from scripts through separate script error handling.

src/ffi/dynamic_data/mod.rs

@@ -1,6 +1,17 @@
+use std::ffi::{c_char, CString};
+
 /// The foreign function interfaces for the turn choices
 mod choices;
 /// The foreign function interfaces for the dynamic data libraries
 mod libraries;
 /// The foreign function interfaces for the dynamic data models
 mod models;
+
+/// The library the battle uses for handling.
+#[no_mangle]
+#[allow(clippy::unwrap_used)]
+extern "C" fn set_script_error_handler(func: unsafe extern "C" fn(*mut c_char)) {
+    crate::dynamic_data::set_script_error_handler(Box::new(move |e: &anyhow_ext::Error| unsafe {
+        func(CString::new(e.to_string()).unwrap().into_raw())
+    }));
+}