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Fix heap-use-after-free when closing a scene with 2D particle nodes selected

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This commit is contained in:
Haoyu Qiu
2025-05-23 12:15:01 +08:00
parent 7a0ab9d561
commit f16378a8de
2 changed files with 43 additions and 16 deletions
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57
editor/plugins/particles_editor_plugin.cpp
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@@ -293,33 +293,58 @@ Particles2DEditorPlugin::Particles2DEditorPlugin() {
emission_mask->connect(SceneStringName(confirmed), callable_mp(this, &Particles2DEditorPlugin::_generate_emission_mask));
}
void Particles2DEditorPlugin::_set_show_gizmos(Node *p_node, bool p_show) {
GPUParticles2D *gpu_particles = Object::cast_to<GPUParticles2D>(p_node);
if (gpu_particles) {
gpu_particles->set_show_gizmos(p_show);
}
CPUParticles2D *cpu_particles = Object::cast_to<CPUParticles2D>(p_node);
if (cpu_particles) {
cpu_particles->set_show_gizmos(p_show);
}
// The `selection_changed` signal is deferred. A node could be deleted before the signal is emitted.
if (p_show) {
p_node->connect(SceneStringName(tree_exiting), callable_mp(this, &Particles2DEditorPlugin::_node_removed).bind(p_node));
} else {
p_node->disconnect(SceneStringName(tree_exiting), callable_mp(this, &Particles2DEditorPlugin::_node_removed));
}
}
void Particles2DEditorPlugin::_selection_changed() {
List<Node *> selected_nodes = EditorNode::get_singleton()->get_editor_selection()->get_top_selected_node_list();
if (selected_particles.is_empty() && selected_nodes.is_empty()) {
List<Node *> current_selection = EditorNode::get_singleton()->get_editor_selection()->get_top_selected_node_list();
if (selected_particles.is_empty() && current_selection.is_empty()) {
return;
}
for (Node *particles : selected_particles) {
if (GPUParticles2D *gpu_particles = Object::cast_to<GPUParticles2D>(particles)) {
gpu_particles->set_show_gizmos(false);
} else if (CPUParticles2D *cpu_particles = Object::cast_to<CPUParticles2D>(particles)) {
cpu_particles->set_show_gizmos(false);
// Turn gizmos off for nodes that are no longer selected.
for (List<Node *>::Element *E = selected_particles.front(); E;) {
Node *node = E->get();
List<Node *>::Element *N = E->next();
if (current_selection.find(node) == nullptr) {
_set_show_gizmos(node, false);
selected_particles.erase(E);
}
E = N;
}
selected_particles.clear();
for (Node *node : selected_nodes) {
if (GPUParticles2D *selected_gpu_particle = Object::cast_to<GPUParticles2D>(node)) {
selected_gpu_particle->set_show_gizmos(true);
selected_particles.push_back(selected_gpu_particle);
} else if (CPUParticles2D *selected_cpu_particle = Object::cast_to<CPUParticles2D>(node)) {
selected_cpu_particle->set_show_gizmos(true);
selected_particles.push_back(selected_cpu_particle);
// Turn gizmos on for nodes that are newly selected.
for (Node *node : current_selection) {
if (selected_particles.find(node) == nullptr) {
_set_show_gizmos(node, true);
selected_particles.push_back(node);
}
}
}
void Particles2DEditorPlugin::_node_removed(Node *p_node) {
List<Node *>::Element *E = selected_particles.find(p_node);
if (E) {
_set_show_gizmos(E->get(), false);
selected_particles.erase(E);
}
}
void GPUParticles2DEditorPlugin::_generate_visibility_rect() {
GPUParticles2D *particles = Object::cast_to<GPUParticles2D>(edited_node);