Provide default Tween values for transition and easing types

TRANS_LINEAR and EASE_IN_OUT are chosen as defaults for
interpolation and follow methods.

scene/animation/tween.cpp

@@ -239,14 +239,14 @@ void Tween::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_runtime"), &Tween::get_runtime);
 
 	// Bind interpolation and follow methods
-	ClassDB::bind_method(D_METHOD("interpolate_property", "object", "property", "initial_val", "final_val", "duration", "trans_type", "ease_type", "delay"), &Tween::interpolate_property, DEFVAL(0));
-	ClassDB::bind_method(D_METHOD("interpolate_method", "object", "method", "initial_val", "final_val", "duration", "trans_type", "ease_type", "delay"), &Tween::interpolate_method, DEFVAL(0));
+	ClassDB::bind_method(D_METHOD("interpolate_property", "object", "property", "initial_val", "final_val", "duration", "trans_type", "ease_type", "delay"), &Tween::interpolate_property, DEFVAL(TRANS_LINEAR), DEFVAL(EASE_IN_OUT), DEFVAL(0));
+	ClassDB::bind_method(D_METHOD("interpolate_method", "object", "method", "initial_val", "final_val", "duration", "trans_type", "ease_type", "delay"), &Tween::interpolate_method, DEFVAL(TRANS_LINEAR), DEFVAL(EASE_IN_OUT), DEFVAL(0));
 	ClassDB::bind_method(D_METHOD("interpolate_callback", "object", "duration", "callback", "arg1", "arg2", "arg3", "arg4", "arg5"), &Tween::interpolate_callback, DEFVAL(Variant()), DEFVAL(Variant()), DEFVAL(Variant()), DEFVAL(Variant()), DEFVAL(Variant()));
 	ClassDB::bind_method(D_METHOD("interpolate_deferred_callback", "object", "duration", "callback", "arg1", "arg2", "arg3", "arg4", "arg5"), &Tween::interpolate_deferred_callback, DEFVAL(Variant()), DEFVAL(Variant()), DEFVAL(Variant()), DEFVAL(Variant()), DEFVAL(Variant()));
-	ClassDB::bind_method(D_METHOD("follow_property", "object", "property", "initial_val", "target", "target_property", "duration", "trans_type", "ease_type", "delay"), &Tween::follow_property, DEFVAL(0));
-	ClassDB::bind_method(D_METHOD("follow_method", "object", "method", "initial_val", "target", "target_method", "duration", "trans_type", "ease_type", "delay"), &Tween::follow_method, DEFVAL(0));
-	ClassDB::bind_method(D_METHOD("targeting_property", "object", "property", "initial", "initial_val", "final_val", "duration", "trans_type", "ease_type", "delay"), &Tween::targeting_property, DEFVAL(0));
-	ClassDB::bind_method(D_METHOD("targeting_method", "object", "method", "initial", "initial_method", "final_val", "duration", "trans_type", "ease_type", "delay"), &Tween::targeting_method, DEFVAL(0));
+	ClassDB::bind_method(D_METHOD("follow_property", "object", "property", "initial_val", "target", "target_property", "duration", "trans_type", "ease_type", "delay"), &Tween::follow_property, DEFVAL(TRANS_LINEAR), DEFVAL(EASE_IN_OUT), DEFVAL(0));
+	ClassDB::bind_method(D_METHOD("follow_method", "object", "method", "initial_val", "target", "target_method", "duration", "trans_type", "ease_type", "delay"), &Tween::follow_method, DEFVAL(TRANS_LINEAR), DEFVAL(EASE_IN_OUT), DEFVAL(0));
+	ClassDB::bind_method(D_METHOD("targeting_property", "object", "property", "initial", "initial_val", "final_val", "duration", "trans_type", "ease_type", "delay"), &Tween::targeting_property, DEFVAL(TRANS_LINEAR), DEFVAL(EASE_IN_OUT), DEFVAL(0));
+	ClassDB::bind_method(D_METHOD("targeting_method", "object", "method", "initial", "initial_method", "final_val", "duration", "trans_type", "ease_type", "delay"), &Tween::targeting_method, DEFVAL(TRANS_LINEAR), DEFVAL(EASE_IN_OUT), DEFVAL(0));
 
 	// Add the Tween signals
 	ADD_SIGNAL(MethodInfo("tween_started", PropertyInfo(Variant::OBJECT, "object"), PropertyInfo(Variant::NODE_PATH, "key")));

scene/animation/tween.h

@@ -179,21 +179,14 @@ public:
 	real_t tell() const;
 	real_t get_runtime() const;
 
-	bool interpolate_property(Object *p_object, NodePath p_property, Variant p_initial_val, Variant p_final_val, real_t p_duration, TransitionType p_trans_type, EaseType p_ease_type, real_t p_delay = 0);
-
-	bool interpolate_method(Object *p_object, StringName p_method, Variant p_initial_val, Variant p_final_val, real_t p_duration, TransitionType p_trans_type, EaseType p_ease_type, real_t p_delay = 0);
-
+	bool interpolate_property(Object *p_object, NodePath p_property, Variant p_initial_val, Variant p_final_val, real_t p_duration, TransitionType p_trans_type = TRANS_LINEAR, EaseType p_ease_type = EASE_IN_OUT, real_t p_delay = 0);
+	bool interpolate_method(Object *p_object, StringName p_method, Variant p_initial_val, Variant p_final_val, real_t p_duration, TransitionType p_trans_type = TRANS_LINEAR, EaseType p_ease_type = EASE_IN_OUT, real_t p_delay = 0);
 	bool interpolate_callback(Object *p_object, real_t p_duration, String p_callback, VARIANT_ARG_DECLARE);
-
 	bool interpolate_deferred_callback(Object *p_object, real_t p_duration, String p_callback, VARIANT_ARG_DECLARE);
-
-	bool follow_property(Object *p_object, NodePath p_property, Variant p_initial_val, Object *p_target, NodePath p_target_property, real_t p_duration, TransitionType p_trans_type, EaseType p_ease_type, real_t p_delay = 0);
-
-	bool follow_method(Object *p_object, StringName p_method, Variant p_initial_val, Object *p_target, StringName p_target_method, real_t p_duration, TransitionType p_trans_type, EaseType p_ease_type, real_t p_delay = 0);
-
-	bool targeting_property(Object *p_object, NodePath p_property, Object *p_initial, NodePath p_initial_property, Variant p_final_val, real_t p_duration, TransitionType p_trans_type, EaseType p_ease_type, real_t p_delay = 0);
-
-	bool targeting_method(Object *p_object, StringName p_method, Object *p_initial, StringName p_initial_method, Variant p_final_val, real_t p_duration, TransitionType p_trans_type, EaseType p_ease_type, real_t p_delay = 0);
+	bool follow_property(Object *p_object, NodePath p_property, Variant p_initial_val, Object *p_target, NodePath p_target_property, real_t p_duration, TransitionType p_trans_type = TRANS_LINEAR, EaseType p_ease_type = EASE_IN_OUT, real_t p_delay = 0);
+	bool follow_method(Object *p_object, StringName p_method, Variant p_initial_val, Object *p_target, StringName p_target_method, real_t p_duration, TransitionType p_trans_type = TRANS_LINEAR, EaseType p_ease_type = EASE_IN_OUT, real_t p_delay = 0);
+	bool targeting_property(Object *p_object, NodePath p_property, Object *p_initial, NodePath p_initial_property, Variant p_final_val, real_t p_duration, TransitionType p_trans_type = TRANS_LINEAR, EaseType p_ease_type = EASE_IN_OUT, real_t p_delay = 0);
+	bool targeting_method(Object *p_object, StringName p_method, Object *p_initial, StringName p_initial_method, Variant p_final_val, real_t p_duration, TransitionType p_trans_type = TRANS_LINEAR, EaseType p_ease_type = EASE_IN_OUT, real_t p_delay = 0);
 
 	Tween();
 	~Tween();