Create GDExtension clases for PhysicsServer3D

* Allows creating a GDExtension based 3D Physics Server (for Bullet, PhysX, etc. support)
* Some changes on native struct binding for PhysicsServer

This allows a 3D Physics server created entirely from GDExtension. Once it works, the idea is to port the 2D one to it.

2 files changed, 10 insertions, 8 deletions

diff --git a/scene/3d/soft_dynamic_body_3d.cpp b/scene/3d/soft_dynamic_body_3d.cpp
index 8ee777bcbf..eafb74f203 100644
--- a/scene/3d/soft_dynamic_body_3d.cpp
+++ b/scene/3d/soft_dynamic_body_3d.cpp
@@ -417,8 +417,8 @@ void SoftDynamicBody3D::_draw_soft_mesh() {
 		PhysicsServer3D::get_singleton()->soft_body_set_mesh(physics_rid, mesh_rid);
 	}
 
-	if (!rendering_server_handler.is_ready(mesh_rid)) {
-		rendering_server_handler.prepare(mesh_rid, 0);
+	if (!rendering_server_handler->is_ready(mesh_rid)) {
+		rendering_server_handler->prepare(mesh_rid, 0);
 
 		/// Necessary in order to render the mesh correctly (Soft body nodes are in global space)
 		simulation_started = true;
@@ -428,11 +428,11 @@ void SoftDynamicBody3D::_draw_soft_mesh() {
 
 	_update_physics_server();
 
-	rendering_server_handler.open();
-	PhysicsServer3D::get_singleton()->soft_body_update_rendering_server(physics_rid, &rendering_server_handler);
-	rendering_server_handler.close();
+	rendering_server_handler->open();
+	PhysicsServer3D::get_singleton()->soft_body_update_rendering_server(physics_rid, rendering_server_handler);
+	rendering_server_handler->close();
 
-	rendering_server_handler.commit_changes();
+	rendering_server_handler->commit_changes();
 }
 
 void SoftDynamicBody3D::_prepare_physics_server() {
@@ -688,10 +688,12 @@ bool SoftDynamicBody3D::is_ray_pickable() const {
 
 SoftDynamicBody3D::SoftDynamicBody3D() :
 		physics_rid(PhysicsServer3D::get_singleton()->soft_body_create()) {
+	rendering_server_handler = memnew(SoftDynamicBodyRenderingServerHandler);
 	PhysicsServer3D::get_singleton()->body_attach_object_instance_id(physics_rid, get_instance_id());
 }
 
 SoftDynamicBody3D::~SoftDynamicBody3D() {
+	memdelete(rendering_server_handler);
 	PhysicsServer3D::get_singleton()->free(physics_rid);
 }
 
diff --git a/scene/3d/soft_dynamic_body_3d.h b/scene/3d/soft_dynamic_body_3d.h
index c30ec701c7..e11e5c73df 100644
--- a/scene/3d/soft_dynamic_body_3d.h
+++ b/scene/3d/soft_dynamic_body_3d.h
@@ -36,7 +36,7 @@
 
 class SoftDynamicBody3D;
 
-class SoftDynamicBodyRenderingServerHandler : public RenderingServerHandler {
+class SoftDynamicBodyRenderingServerHandler : public PhysicsServer3DRenderingServerHandler {
 	friend class SoftDynamicBody3D;
 
 	RID mesh;
@@ -84,7 +84,7 @@ public:
 	};
 
 private:
-	SoftDynamicBodyRenderingServerHandler rendering_server_handler;
+	SoftDynamicBodyRenderingServerHandler *rendering_server_handler = nullptr;
 
 	RID physics_rid;