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Fix potential crashes with TileMap navmesh baking 

Fixes potential crashes with TileMap navmesh baking.
This commit is contained in:
smix8 2023-10-24 14:50:14 +02:00
parent e8d57afaec
commit 5e4ff965cc
1 changed files with 25 additions and 4 deletions
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29
modules/navigation/nav_mesh_generator_2d.cpp
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@ -587,6 +587,9 @@ void NavMeshGenerator2D::generator_parse_tilemap_node(const Ref<NavigationPolygo
const Vector2i &cell = used_cells[used_cell_index];
const TileData *tile_data = tilemap->get_cell_tile_data(tilemap_layer, cell, false);
if (tile_data == nullptr) {
continue;
}
Transform2D tile_transform;
tile_transform.set_origin(tilemap->map_to_local(cell));
@ -597,10 +600,19 @@ void NavMeshGenerator2D::generator_parse_tilemap_node(const Ref<NavigationPolygo
Ref<NavigationPolygon> navigation_polygon = tile_data->get_navigation_polygon(tilemap_layer);
if (navigation_polygon.is_valid()) {
for (int outline_index = 0; outline_index < navigation_polygon->get_outline_count(); outline_index++) {
Vector<Vector2> traversable_outline = navigation_polygon->get_outline(outline_index);
const Vector<Vector2> &navigation_polygon_outline = navigation_polygon->get_outline(outline_index);
if (navigation_polygon_outline.size() == 0) {
continue;
}
Vector<Vector2> traversable_outline;
traversable_outline.resize(navigation_polygon_outline.size());
const Vector2 *navigation_polygon_outline_ptr = navigation_polygon_outline.ptr();
Vector2 *traversable_outline_ptrw = traversable_outline.ptrw();
for (int traversable_outline_index = 0; traversable_outline_index < traversable_outline.size(); traversable_outline_index++) {
traversable_outline.write[traversable_outline_index] = tile_transform_offset.xform(traversable_outline[traversable_outline_index]);
traversable_outline_ptrw[traversable_outline_index] = tile_transform_offset.xform(navigation_polygon_outline_ptr[traversable_outline_index]);
}
p_source_geometry_data->_add_traversable_outline(traversable_outline);
@ -610,10 +622,19 @@ void NavMeshGenerator2D::generator_parse_tilemap_node(const Ref<NavigationPolygo
if (physics_layers_count > 0 && (parsed_geometry_type == NavigationPolygon::PARSED_GEOMETRY_STATIC_COLLIDERS || parsed_geometry_type == NavigationPolygon::PARSED_GEOMETRY_BOTH) && (tile_set->get_physics_layer_collision_layer(tilemap_layer) & parsed_collision_mask)) {
for (int collision_polygon_index = 0; collision_polygon_index < tile_data->get_collision_polygons_count(tilemap_layer); collision_polygon_index++) {
Vector<Vector2> obstruction_outline = tile_data->get_collision_polygon_points(tilemap_layer, collision_polygon_index);
const Vector<Vector2> &collision_polygon_points = tile_data->get_collision_polygon_points(tilemap_layer, collision_polygon_index);
if (collision_polygon_points.size() == 0) {
continue;
}
Vector<Vector2> obstruction_outline;
obstruction_outline.resize(collision_polygon_points.size());
const Vector2 *collision_polygon_points_ptr = collision_polygon_points.ptr();
Vector2 *obstruction_outline_ptrw = obstruction_outline.ptrw();
for (int obstruction_outline_index = 0; obstruction_outline_index < obstruction_outline.size(); obstruction_outline_index++) {
obstruction_outline.write[obstruction_outline_index] = tile_transform_offset.xform(obstruction_outline[obstruction_outline_index]);
obstruction_outline_ptrw[obstruction_outline_index] = tile_transform_offset.xform(collision_polygon_points_ptr[obstruction_outline_index]);
}
p_source_geometry_data->_add_obstruction_outline(obstruction_outline);