allow passing more arguments than needed

Author: makspll

crates/bevy_mod_scripting_core/src/bindings/function/script_function.rs

@@ -417,7 +417,7 @@ macro_rules! impl_script_function {
                 let func = (move |caller_context: CallerContext, world: WorldCallbackAccess, args: Vec<ScriptValue> | {
                     let res: Result<ScriptValue, InteropError> = (|| {
                         let expected_arg_count = count!($($param )*);
-                        if args.len() != expected_arg_count {
+                        if args.len() < expected_arg_count {
                             return Err(InteropError::function_call_error(FunctionError::ArgCountMismatch{
                                 expected: expected_arg_count,
                                 received: args.len()

crates/bevy_mod_scripting_functions/src/core.rs

@@ -304,7 +304,7 @@ pub fn register_reflect_reference_functions(
         .register("iter", |w: WorldCallbackAccess, s: ReflectReference| {
             let mut infinite_iter = s.into_iter_infinite();
             let world = w.try_read().expect("stale world");
-            let iter_function = move |w: WorldCallbackAccess| {
+            let iter_function = move || {
                 let (next_ref, idx) = infinite_iter.next_ref();
                 let allocator = world.allocator();
                 let mut allocator = allocator.write();

crates/languages/bevy_mod_scripting_lua/src/bindings/reference.rs

@@ -310,10 +310,15 @@ impl UserData for LuaReflectReference {
             feature = "luajit52",
         ))]
         m.add_meta_function(MetaMethod::Pairs, |l, s: LuaReflectReference| {
-            let iter_func = lookup_function_typed::<ReflectReference>(l, "iter")
+            let mut iter_func = lookup_dynamic_function_typed::<ReflectReference>(l, "iter")
                 .expect("No iter function registered");
+            let world = l.get_world();
 
-            Ok(iter_func)
+            Ok(LuaScriptValue::from(iter_func.call_script_function(
+                vec![ScriptValue::Reference(s.into())],
+                world,
+                lua_caller_context(),
+            )?))
         });
 
         // #[cfg(any(

crates/languages/bevy_mod_scripting_lua/tests/data/iter/vec.lua

@@ -2,7 +2,7 @@ local res_type = world.get_type_by_name("TestResourceWithVariousFields")
 local res = world.get_resource(res_type)
 
 iterated_vals = {}
-for i,v in pairs(res.vec_usize)
+for i,v in pairs(res.vec_usize) do
     interated_vals[i] = v
 end