young current
I am trying to assign a new custom material to an GLTF grass mesh yet I couldn't even achieve assigning a StandartMaterial. Whenever I insert or remove an MeshMaterial3d component the becomes invisible.
How I spawn GLTF
#[derive(Component)]
struct WillGetCustomMaterial;
fn setup(mut commands: Commands, asset_server: Res<AssetServer>) { commands.spawn((SceneRoot(asset_server.load(GltfAssetLabel::Scene(0).from_asset("grass/MeshGrass.gltf"))),
WillGetCustomMaterial,
));
}
My observer;
fn change_material(
scene_ready: On<SceneInstanceReady>,
mut commands: Commands,
will_get_material_q: Query<&WillGetCustomMaterial>,
children_q: Query<&Children>,
mesh_entities_q: Query<(&MeshMaterial3d<StandardMaterial>, &GltfMaterialName)>,
mut standard_materials: ResMut<Assets<StandardMaterial>>,
) {
if will_get_material_q.get(scene_ready.entity).is_err() {
return;
}
for child_entity in children_q.iter_descendants(scene_ready.entity) {
dbg!(child_entity);
if let Ok((id, material_name)) = mesh_entities_q.get(child_entity) {
match material_name.0.as_str() {
"InstancedGrassMat" => {
// Reaches here
info!("Found mesh child {:?}, changing material...", child_entity);
// Uncommenting any of these two make gltf mesh disappear
// commands
// .entity(child_entity)
// .remove::<MeshMaterial3d<StandardMaterial>>();
// commands.entity(child_entity).insert(MeshMaterial3d(
// standard_materials.add(Color::srgb(0.4, 0.4, 0.1)),
// ));
}
name => {
info!("not replacing: {name}");
}
}
}
}
commands
.entity(scene_ready.entity)
.remove::<WillGetCustomMaterial>();
}
glass mango
