asgardius/virtualx-engine
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Fix crash on node duplication

Browse source 
That happened when an instanced scene was being duplicated while it also contained nodes added to it in the scene holding the instance.

Plus:
- Add comments about the logic behind all this.
- Move the null guard to where it can protect the most, but consider it a runtime error rather that a situation we expect.

Fixes #13282.
This commit is contained in:
Pedro J. Estébanez 2017-11-25 21:13:52 +01:00
parent 9738ebcda0
commit 922cf9fbb0
1 changed files with 9 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
scene/main/node.cpp
View file

@ -2114,8 +2114,16 @@ Node *Node::_duplicate(int p_flags, Map<const Node *, Node *> *r_duplimap) const
node_tree.push_front(this);
if (instanced) {
// Since nodes in the instanced hierarchy won't be duplicated explicitly, we need to make an inventory
// of all the nodes in the tree of the instanced scene in order to transfer the values of the properties
for (List<const Node *>::Element *N = node_tree.front(); N; N = N->next()) {
for (int i = 0; i < N->get()->get_child_count(); ++i) {
// Skip nodes not really belonging to the instanced hierarchy; they'll be processed normally later
if (get_child(i)->data.owner != this)
continue;
node_tree.push_back(N->get()->get_child(i));
}
}
@ -2124,6 +2132,7 @@ Node *Node::_duplicate(int p_flags, Map<const Node *, Node *> *r_duplimap) const
for (List<const Node *>::Element *N = node_tree.front(); N; N = N->next()) {
Node *current_node = node->get_node(get_path_to(N->get()));
ERR_CONTINUE(!current_node);
if (p_flags & DUPLICATE_SCRIPTS) {
bool is_valid = false;
@ -2136,9 +2145,6 @@ Node *Node::_duplicate(int p_flags, Map<const Node *, Node *> *r_duplimap) const
List<PropertyInfo> plist;
N->get()->get_property_list(&plist);
if (!current_node)
continue;
for (List<PropertyInfo>::Element *E = plist.front(); E; E = E->next()) {
if (!(E->get().usage & PROPERTY_USAGE_STORAGE))