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Improve `Node.get_child()` error messages 

- Mention node path (if inside tree) or node name (if not in tree),
  attempted node index and actual child count.
- Mention whether internal children were considered during the search.
This commit is contained in:
Hugo Locurcio 2024-08-15 17:45:36 +02:00
parent 96be44c0ec
commit 7994f73dc2
1 changed files with 11 additions and 3 deletions
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14
scene/main/node.cpp
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@ -1711,13 +1711,21 @@ Node *Node::get_child(int p_index, bool p_include_internal) const {
if (p_index < 0) {
p_index += data.children_cache.size();
}
ERR_FAIL_INDEX_V(p_index, (int)data.children_cache.size(), nullptr);
ERR_FAIL_INDEX_V_MSG(p_index, (int)data.children_cache.size(), nullptr,
vformat("%s: Can't get child node at index %d, since the node only has %d children (including internal children).",
is_inside_tree() ? String(get_path()) : String(get_name()) + " (out-of-tree)",
p_index,
(int)data.children_cache.size()));
return data.children_cache[p_index];
} else {
if (p_index < 0) {
p_index += (int)data.children_cache.size() - data.internal_children_front_count_cache - data.internal_children_back_count_cache;
}
ERR_FAIL_INDEX_V(p_index, (int)data.children_cache.size() - data.internal_children_front_count_cache - data.internal_children_back_count_cache, nullptr);
ERR_FAIL_INDEX_V_MSG(p_index, (int)data.children_cache.size() - data.internal_children_front_count_cache - data.internal_children_back_count_cache, nullptr,
vformat("%s: Can't get child node at index %d, since the node only has %d children.",
is_inside_tree() ? String(get_path()) : String(get_name()) + " (out-of-tree)",
p_index,
(int)data.children_cache.size()));
p_index += data.internal_children_front_count_cache;
return data.children_cache[p_index];
}
@ -1750,7 +1758,7 @@ Node *Node::get_node_or_null(const NodePath &p_path) const {
return nullptr;
}
ERR_FAIL_COND_V_MSG(!data.inside_tree && p_path.is_absolute(), nullptr, "Can't use get_node() with absolute paths from outside the active scene tree.");
ERR_FAIL_COND_V_MSG(!data.inside_tree && p_path.is_absolute(), nullptr, vformat("Can't use get_node() with absolute path \"%s\" from outside the active scene tree.", p_path));
Node *current = nullptr;
Node *root = nullptr;