Implement Particle Trails

-Enable the trails and set the length in seconds
-Provide a mesh with a skeleton and a skin
-Or, alternatively use one of the built-in TubeTrailMesh/RibbonTrailMesh
-Works deterministically
-Fixed particle collisions (were broken)
-Not working in 2D yet (that will happen next)

2 files changed, 9 insertions, 0 deletions

diff --git a/core/io/resource.cpp b/core/io/resource.cpp
index 8560e2abc7..d46e9edafa 100644
--- a/core/io/resource.cpp
+++ b/core/io/resource.cpp
@@ -110,6 +110,12 @@ String Resource::get_name() const {
 	return name;
 }
 
+void Resource::update_configuration_warning() {
+	if (_update_configuration_warning) {
+		_update_configuration_warning();
+	}
+}
+
 bool Resource::editor_can_reload_from_file() {
 	return true; //by default yes
 }
@@ -320,6 +326,7 @@ void Resource::setup_local_to_scene() {
 }
 
 Node *(*Resource::_get_local_scene_func)() = nullptr;
+void (*Resource::_update_configuration_warning)() = nullptr;
 
 void Resource::set_as_translation_remapped(bool p_remapped) {
 	if (remapped_list.in_list() == p_remapped) {
diff --git a/core/io/resource.h b/core/io/resource.h
index ae18ac0c8a..75a9f928f8 100644
--- a/core/io/resource.h
+++ b/core/io/resource.h
@@ -88,7 +88,9 @@ protected:
 
 public:
 	static Node *(*_get_local_scene_func)(); //used by editor
+	static void (*_update_configuration_warning)(); //used by editor
 
+	void update_configuration_warning();
 	virtual bool editor_can_reload_from_file();
 	virtual void reset_state(); //for resources that use variable amount of properties, either via _validate_property or _get_property_list, this function needs to be implemented to correctly clear state
 	virtual Error copy_from(const Ref<Resource> &p_resource);