SDLPP: Save texture before rendering

In some cases texture might be changed after render() has been called
but before renderer presented the render, causing errors.

sdlpp/sdlpp_renderobject.cpp

@@ -104,10 +104,10 @@ std::shared_ptr< Renderer > RenderObject::getRenderer() const {
 void RenderObject::setSceneID( int id ) {
     scene_id = id;
 }
-void RenderObject::copyTo(std::shared_ptr<RenderObject> other) {
+void RenderObject::copyTo( std::shared_ptr< RenderObject > other ) {
     other->collisions.clear();
     for ( auto &colider : collisions ) {
-        other->collisions.push_back(colider->copySelf());
+        other->collisions.push_back( colider->copySelf() );
     }
     other->texture.reset();
     if ( texture ) {
@@ -119,4 +119,7 @@ void RenderObject::copyTo(std::shared_ptr<RenderObject> other) {
     }
     other->colidedWith.clear();
 }
+void RenderObject::saveCurTexture() {
+    cur_texture = texture;
+}
 } // namespace SDLPP