3 files changed, 15 insertions, 18 deletions

diff --git a/core/variant/array.cpp b/core/variant/array.cpp
index 48916f941e..9a2922a777 100644
--- a/core/variant/array.cpp
+++ b/core/variant/array.cpp
@@ -35,6 +35,7 @@
 #include "core/object/script_language.h"
 #include "core/templates/hashfuncs.h"
 #include "core/templates/vector.h"
+#include "core/variant/callable.h"
 #include "core/variant/variant.h"
 
 class ArrayPrivate {
@@ -371,25 +372,22 @@ void Array::sort() {
 }
 
 struct _ArrayVariantSortCustom {
-	Object *obj = nullptr;
-	StringName func;
+	Callable func;
 
 	_FORCE_INLINE_ bool operator()(const Variant &p_l, const Variant &p_r) const {
 		const Variant *args[2] = { &p_l, &p_r };
 		Callable::CallError err;
-		bool res = obj->call(func, args, 2, err);
-		if (err.error != Callable::CallError::CALL_OK) {
-			res = false;
-		}
+		Variant res;
+		func.call(args, 2, res, err);
+		ERR_FAIL_COND_V_MSG(err.error != Callable::CallError::CALL_OK, false,
+				"Error calling sorting method: " + Variant::get_callable_error_text(func, args, 1, err));
 		return res;
 	}
 };
-void Array::sort_custom(Object *p_obj, const StringName &p_function) {
-	ERR_FAIL_NULL(p_obj);
 
+void Array::sort_custom(Callable p_callable) {
 	SortArray<Variant, _ArrayVariantSortCustom, true> avs;
-	avs.compare.obj = p_obj;
-	avs.compare.func = p_function;
+	avs.compare.func = p_callable;
 	avs.sort(_p->array.ptrw(), _p->array.size());
 }
 
@@ -438,13 +436,11 @@ int Array::bsearch(const Variant &p_value, bool p_before) {
 	return bisect(_p->array, p_value, p_before, _ArrayVariantSort());
 }
 
-int Array::bsearch_custom(const Variant &p_value, Object *p_obj, const StringName &p_function, bool p_before) {
+int Array::bsearch_custom(const Variant &p_value, Callable p_callable, bool p_before) {
 	ERR_FAIL_COND_V(!_p->typed.validate(p_value, "custom binary search"), -1);
-	ERR_FAIL_NULL_V(p_obj, 0);
 
 	_ArrayVariantSortCustom less;
-	less.obj = p_obj;
-	less.func = p_function;
+	less.func = p_callable;
 
 	return bisect(_p->array, p_value, p_before, less);
 }
diff --git a/core/variant/array.h b/core/variant/array.h
index 26de5477b4..d8f2402330 100644
--- a/core/variant/array.h
+++ b/core/variant/array.h
@@ -37,6 +37,7 @@ class Variant;
 class ArrayPrivate;
 class Object;
 class StringName;
+class Callable;
 
 class Array {
 	mutable ArrayPrivate *_p;
@@ -78,10 +79,10 @@ public:
 	Variant back() const;
 
 	void sort();
-	void sort_custom(Object *p_obj, const StringName &p_function);
+	void sort_custom(Callable p_callable);
 	void shuffle();
 	int bsearch(const Variant &p_value, bool p_before = true);
-	int bsearch_custom(const Variant &p_value, Object *p_obj, const StringName &p_function, bool p_before = true);
+	int bsearch_custom(const Variant &p_value, Callable p_callable, bool p_before = true);
 	void invert();
 
 	int find(const Variant &p_value, int p_from = 0) const;
diff --git a/core/variant/variant_call.cpp b/core/variant/variant_call.cpp
index 2fd8134fbd..8f2cba138b 100644
--- a/core/variant/variant_call.cpp
+++ b/core/variant/variant_call.cpp
@@ -1298,10 +1298,10 @@ static void _register_variant_builtin_methods() {
 	bind_method(Array, pop_back, sarray(), varray());
 	bind_method(Array, pop_front, sarray(), varray());
 	bind_method(Array, sort, sarray(), varray());
-	bind_method(Array, sort_custom, sarray("obj", "func"), varray());
+	bind_method(Array, sort_custom, sarray("func"), varray());
 	bind_method(Array, shuffle, sarray(), varray());
 	bind_method(Array, bsearch, sarray("value", "before"), varray(true));
-	bind_method(Array, bsearch_custom, sarray("value", "obj", "func", "before"), varray(true));
+	bind_method(Array, bsearch_custom, sarray("value", "func", "before"), varray(true));
 	bind_method(Array, invert, sarray(), varray());
 	bind_method(Array, duplicate, sarray("deep"), varray(false));
 	bind_method(Array, slice, sarray("begin", "end", "step", "deep"), varray(1, false));