Added an option to ParallaxLayer to add an extra scroll offset, helps if you want to make clouds to move by themselves and animate that, for example.

1 files changed, 30 insertions, 1 deletions

diff --git a/scene/2d/parallax_layer.cpp b/scene/2d/parallax_layer.cpp
index bf559deb09..ec7189ff93 100644
--- a/scene/2d/parallax_layer.cpp
+++ b/scene/2d/parallax_layer.cpp
@@ -32,6 +32,15 @@
 void ParallaxLayer::set_motion_scale(const Size2& p_scale) {
 
 	motion_scale=p_scale;
+
+
+	ParallaxBackground *pb = get_parent()->cast_to<ParallaxBackground>();
+	if (is_inside_tree() && pb) {
+		Vector2 ofs = pb->get_final_offset();
+		float scale = pb->get_scroll_scale();
+		set_base_offset_and_scale(ofs,scale);
+	}
+
 }
 
 Size2 ParallaxLayer::get_motion_scale() const {
@@ -40,6 +49,23 @@ Size2 ParallaxLayer::get_motion_scale() const {
 
 }
 
+void ParallaxLayer::set_motion_offset(const Size2& p_offset) {
+
+	motion_offset=p_offset;
+
+	ParallaxBackground *pb = get_parent()->cast_to<ParallaxBackground>();
+	if (is_inside_tree() && pb) {
+		Vector2 ofs = pb->get_final_offset();
+		float scale = pb->get_scroll_scale();
+		set_base_offset_and_scale(ofs,scale);
+	}
+}
+
+Size2 ParallaxLayer::get_motion_offset() const {
+
+	return motion_offset;
+
+}
 
 void ParallaxLayer::_update_mirroring() {
 
@@ -89,7 +115,7 @@ void ParallaxLayer::set_base_offset_and_scale(const Point2& p_offset,float p_sca
 		return;
 	if (get_tree()->is_editor_hint())
 		return;
-	Point2 new_ofs = ((orig_offset+p_offset)*motion_scale)*p_scale;
+	Point2 new_ofs = ((orig_offset+p_offset)*motion_scale)*p_scale+motion_offset;
 
 	if (mirroring.x) {
 
@@ -132,10 +158,13 @@ void ParallaxLayer::_bind_methods() {
 
 	ObjectTypeDB::bind_method(_MD("set_motion_scale","scale"),&ParallaxLayer::set_motion_scale);
 	ObjectTypeDB::bind_method(_MD("get_motion_scale"),&ParallaxLayer::get_motion_scale);
+	ObjectTypeDB::bind_method(_MD("set_motion_offset","offset"),&ParallaxLayer::set_motion_offset);
+	ObjectTypeDB::bind_method(_MD("get_motion_offset"),&ParallaxLayer::get_motion_offset);
 	ObjectTypeDB::bind_method(_MD("set_mirroring","mirror"),&ParallaxLayer::set_mirroring);
 	ObjectTypeDB::bind_method(_MD("get_mirroring"),&ParallaxLayer::get_mirroring);
 
 	ADD_PROPERTY( PropertyInfo(Variant::VECTOR2,"motion/scale"),_SCS("set_motion_scale"),_SCS("get_motion_scale"));
+	ADD_PROPERTY( PropertyInfo(Variant::VECTOR2,"motion/offset"),_SCS("set_motion_offset"),_SCS("get_motion_offset"));
 	ADD_PROPERTY( PropertyInfo(Variant::VECTOR2,"motion/mirroring"),_SCS("set_mirroring"),_SCS("get_mirroring"));
 
 }