Merge pull request #49792 from EricEzaM/improve-object-errors

Improved some error messages (from ERR_FAIL_*) in Object.

core/object/object.cpp

@@ -920,7 +920,7 @@ void Object::set_meta(const String &p_name, const Variant &p_value) {
 }
 
 Variant Object::get_meta(const String &p_name) const {
-	ERR_FAIL_COND_V(!metadata.has(p_name), Variant());
+	ERR_FAIL_COND_V_MSG(!metadata.has(p_name), Variant(), "The object does not have any 'meta' values with the key '" + p_name + "'.");
 	return metadata[p_name];
 }
 
@@ -1287,10 +1287,10 @@ void Object::get_signals_connected_to_this(List<Connection> *p_connections) cons
 }
 
 Error Object::connect(const StringName &p_signal, const Callable &p_callable, const Vector<Variant> &p_binds, uint32_t p_flags) {
-	ERR_FAIL_COND_V(p_callable.is_null(), ERR_INVALID_PARAMETER);
+	ERR_FAIL_COND_V_MSG(p_callable.is_null(), ERR_INVALID_PARAMETER, "Cannot connect to '" + p_signal + "': the provided callable is null.");
 
 	Object *target_object = p_callable.get_object();
-	ERR_FAIL_COND_V(!target_object, ERR_INVALID_PARAMETER);
+	ERR_FAIL_COND_V_MSG(!target_object, ERR_INVALID_PARAMETER, "Cannot connect to '" + p_signal + "' to callable '" + p_callable + "': the callable object is null.");
 
 	SignalData *s = signal_map.getptr(p_signal);
 	if (!s) {
@@ -1348,7 +1348,7 @@ Error Object::connect(const StringName &p_signal, const Callable &p_callable, co
 }
 
 bool Object::is_connected(const StringName &p_signal, const Callable &p_callable) const {
-	ERR_FAIL_COND_V(p_callable.is_null(), false);
+	ERR_FAIL_COND_V_MSG(p_callable.is_null(), false, "Cannot determine if connected to '" + p_signal + "': the provided callable is null.");
 	const SignalData *s = signal_map.getptr(p_signal);
 	if (!s) {
 		bool signal_is_valid = ClassDB::has_signal(get_class_name(), p_signal);
@@ -1375,10 +1375,10 @@ void Object::disconnect(const StringName &p_signal, const Callable &p_callable)
 }
 
 void Object::_disconnect(const StringName &p_signal, const Callable &p_callable, bool p_force) {
-	ERR_FAIL_COND(p_callable.is_null());
+	ERR_FAIL_COND_MSG(p_callable.is_null(), "Cannot disconnect from '" + p_signal + "': the provided callable is null.");
 
 	Object *target_object = p_callable.get_object();
-	ERR_FAIL_COND(!target_object);
+	ERR_FAIL_COND_MSG(!target_object, "Cannot disconnect '" + p_signal + "' from callable '" + p_callable + "': the callable object is null.");
 
 	SignalData *s = signal_map.getptr(p_signal);
 	if (!s) {