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//! An example showcasing how to create colliders for meshes and scenes
//! using `ColliderConstructor` and `ColliderConstructorHierarchy` respectively.
use avian3d::prelude::*;
use bevy::prelude::*;
use examples_common_3d::ExampleCommonPlugin;
fn main() {
App::new()
.add_plugins((
DefaultPlugins,
ExampleCommonPlugin,
PhysicsPlugins::default(),
))
.add_systems(Startup, setup)
.run();
}
fn setup(
mut commands: Commands,
mut materials: ResMut<Assets<StandardMaterial>>,
mut meshes: ResMut<Assets<Mesh>>,
assets: ResMut<AssetServer>,
) {
// Spawn ground and generate a collider for the mesh using ColliderConstructor
commands.spawn((
Mesh3d(meshes.add(Plane3d::default().mesh().size(8.0, 8.0))),
MeshMaterial3d(materials.add(Color::srgb(0.3, 0.5, 0.3))),
ColliderConstructor::TrimeshFromMesh,
RigidBody::Static,
));
// Spawn Ferris the crab and generate colliders for the scene using ColliderConstructorHierarchy
commands.spawn((
// The model was made by RayMarch, licenced under CC0-1.0, and can be found here:
// https://github.com/RayMarch/ferris3d
SceneRoot(assets.load("ferris.glb#Scene0")),
Transform::from_xyz(0.0, 1.0, 0.0).with_scale(Vec3::splat(2.0)),
// Create colliders using convex decomposition.
// This takes longer than creating a trimesh or convex hull collider,
// but is more performant for collision detection.
ColliderConstructorHierarchy::new(ColliderConstructor::ConvexDecompositionFromMesh)
// Make the arms heavier to make it easier to stand upright
// Note: Bevy uses the format `MeshName.MaterialName` for the `Name` of glTF mesh primitives.
.with_density_for_name("armL_mesh.ferris_material", 3.0)
.with_density_for_name("armR_mesh.ferris_material", 3.0),
RigidBody::Dynamic,
));
// Light
commands.spawn((
PointLight {
intensity: 1_000_000.0,
shadows_enabled: true,
..default()
},
Transform::from_xyz(2.0, 8.0, 2.0),
));
// Camera
commands.spawn((
Camera3d::default(),
Transform::from_xyz(-5.0, 3.5, 5.5).looking_at(Vec3::ZERO, Vec3::Y),
));
}