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feat(wasm): added working examples for bevy_gltf_components & bevy_gltf_blueprints (#90) 

closes #88
This commit is contained in:
Mark Moissette 2024-01-02 14:03:29 +01:00 committed by GitHub
parent af94e49976
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@ -821,6 +821,18 @@ dependencies = [
"rand",
]
[[package]]
name = "bevy_gltf_blueprints_basic_wasm_example"
version = "0.3.0"
dependencies = [
"bevy",
"bevy_asset_loader",
"bevy_editor_pls",
"bevy_gltf_blueprints",
"bevy_rapier3d",
"rand",
]
[[package]]
name = "bevy_gltf_blueprints_basic_xpbd_physics_example"
version = "0.3.0"
@ -911,6 +923,16 @@ dependencies = [
"bevy_rapier3d",
]
[[package]]
name = "bevy_gltf_components_basic_wasm_example"
version = "0.3.0"
dependencies = [
"bevy",
"bevy_editor_pls",
"bevy_gltf_components 0.2.0",
"bevy_rapier3d",
]
[[package]]
name = "bevy_hierarchy"
version = "0.12.1"

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Cargo.toml
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@ -3,7 +3,9 @@ members = [
"crates/bevy_gltf_components",
"crates/bevy_gltf_blueprints",
"examples/bevy_gltf_components/basic/",
"examples/bevy_gltf_components/basic_wasm/",
"examples/bevy_gltf_blueprints/basic/",
"examples/bevy_gltf_blueprints/basic_wasm/",
"examples/bevy_gltf_blueprints/basic_scene_components/",
"examples/bevy_gltf_blueprints/basic_xpbd_physics/",
"examples/bevy_gltf_blueprints/nested_blueprints/",

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[package]
name = "bevy_gltf_blueprints_basic_wasm_example"
version = "0.3.0"
edition = "2021"
license = "MIT OR Apache-2.0"
[dependencies]
bevy="0.12"
bevy_gltf_blueprints = { path = "../../../crates/bevy_gltf_blueprints" }
bevy_rapier3d = { version = "0.23.0", features = [ "serde-serialize", "debug-render-3d", "enhanced-determinism"] }
bevy_asset_loader = { version = "0.18", features = ["standard_dynamic_assets" ]}
bevy_editor_pls = { version = "0.6" }
rand = "0.8.5"

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# Basic wasm example/demo
This example showcases various components & blueprints extracted from the gltf files, including physics colliders & rigid bodies, in wasm
## Setup
as per the bevy documentation:
```shell
rustup target add wasm32-unknown-unknown
cargo install wasm-bindgen-cli
```
## Building this example
navigate to the current folder , and then
```shell
cargo build --release --target wasm32-unknown-unknown --target-dir ./target
wasm-bindgen --out-name wasm_example \
--out-dir ./target/wasm \
--target web target/wasm32-unknown-unknown/release/bevy_gltf_blueprints_basic_wasm_example.wasm
```
## Running this example
run a web server in the current folder, and navigate to the page, you should see the example in your browser

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({})

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({
"world":File (path: "models/World.glb"),
/*"models": Files (
paths: [
"models/library/Container.glb",
"models/library/Health_Pickup.glb",
"models/library/MagicTeapot.glb",
"models/library/Pillar.glb",
"models/library/Player.glb",
"models/library/Unused_in_level_test.glb"
],
)*/
})

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<html>
<head>
<meta charset="UTF-8" />
<style>
body {
background: linear-gradient(
135deg,
white 0%,
white 49%,
black 49%,
black 51%,
white 51%,
white 100%
);
background-repeat: repeat;
background-size: 20px 20px;
}
canvas {
background-color: white;
}
</style>
</head>
<script type="module">
import init from './target/wasm/wasm_example.js'
init()
</script>
</html>

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use bevy::prelude::*;
use bevy_asset_loader::prelude::*;
#[derive(AssetCollection, Resource)]
pub struct CoreAssets {}

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use bevy::gltf::Gltf;
use bevy::prelude::*;
use bevy::utils::HashMap;
use bevy_asset_loader::prelude::*;
#[derive(AssetCollection, Resource)]
pub struct GameAssets {
#[asset(key = "world")]
pub world: Handle<Gltf>,
#[asset(paths("models/library/Container.glb", "models/library/Health_Pickup.glb", "models/library/MagicTeapot.glb",
"models/library/Pillar.glb",
"models/library/Player.glb",
"models/library/Unused_in_level_test.glb"), collection(typed))]
pub models: Vec<Handle<Gltf>>,
/*
#[asset(key = "models", collection(typed, mapped))]
pub models: HashMap<String, Handle<Gltf>>,
#[asset(key = "models", collection(typed))]
pub models: Vec<Handle<Gltf>>,*/
}

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pub mod assets_core;
pub use assets_core::*;
pub mod assets_game;
pub use assets_game::*;
use bevy::prelude::*;
use bevy_asset_loader::prelude::*;
use crate::state::AppState;
pub struct AssetsPlugin;
impl Plugin for AssetsPlugin {
fn build(&self, app: &mut App) {
app
// load core assets (ie assets needed in the main menu, and everywhere else before loading more assets in game)
.add_loading_state(
LoadingState::new(AppState::CoreLoading).continue_to_state(AppState::MenuRunning),
)
.add_dynamic_collection_to_loading_state::<_, StandardDynamicAssetCollection>(
AppState::CoreLoading,
"assets_core.assets.ron",
)
.add_collection_to_loading_state::<_, CoreAssets>(AppState::CoreLoading)
// load game assets
.add_loading_state(
LoadingState::new(AppState::AppLoading).continue_to_state(AppState::AppRunning),
)
.add_dynamic_collection_to_loading_state::<_, StandardDynamicAssetCollection>(
AppState::AppLoading,
"assets_game.assets.ron",
)
.add_collection_to_loading_state::<_, GameAssets>(AppState::AppLoading);
}
}

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use bevy::core_pipeline::bloom::{BloomCompositeMode, BloomSettings};
use bevy::core_pipeline::tonemapping::{DebandDither, Tonemapping};
use bevy::prelude::*;
use super::CameraTrackingOffset;
pub fn camera_replace_proxies(
mut commands: Commands,
mut added_cameras: Query<(Entity, &mut Camera), (Added<Camera>, With<CameraTrackingOffset>)>,
) {
for (entity, mut camera) in added_cameras.iter_mut() {
info!("detected added camera, updating proxy");
camera.hdr = true;
commands
.entity(entity)
.insert(DebandDither::Enabled)
.insert(Tonemapping::BlenderFilmic)
.insert(BloomSettings {
intensity: 0.01,
composite_mode: BloomCompositeMode::Additive,
..default()
});
}
}

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use bevy::prelude::*;
#[derive(Component, Reflect, Debug)]
#[reflect(Component)]
/// Component for cameras, with an offset from the Trackable target
///
pub struct CameraTracking {
pub offset: Vec3,
}
impl Default for CameraTracking {
fn default() -> Self {
CameraTracking {
offset: Vec3::new(0.0, 6.0, 8.0),
}
}
}
#[derive(Component, Reflect, Debug, Deref, DerefMut)]
#[reflect(Component)]
/// Component for cameras, with an offset from the Trackable target
pub struct CameraTrackingOffset(Vec3);
impl Default for CameraTrackingOffset {
fn default() -> Self {
CameraTrackingOffset(Vec3::new(0.0, 6.0, 8.0))
}
}
impl CameraTrackingOffset {
fn new(input: Vec3) -> Self {
CameraTrackingOffset(input)
}
}
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
/// Add this component to an entity if you want it to be tracked by a Camera
pub struct CameraTrackable;
pub fn camera_track(
mut tracking_cameras: Query<
(&mut Transform, &CameraTrackingOffset),
(
With<Camera>,
With<CameraTrackingOffset>,
Without<CameraTrackable>,
),
>,
camera_tracked: Query<&Transform, With<CameraTrackable>>,
) {
for (mut camera_transform, tracking_offset) in tracking_cameras.iter_mut() {
for tracked_transform in camera_tracked.iter() {
let target_position = tracked_transform.translation + tracking_offset.0;
let eased_position = camera_transform.translation.lerp(target_position, 0.1);
camera_transform.translation = eased_position; // + tracking.offset;// tracked_transform.translation + tracking.offset;
*camera_transform = camera_transform.looking_at(tracked_transform.translation, Vec3::Y);
}
}
}

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pub mod camera_tracking;
pub use camera_tracking::*;
pub mod camera_replace_proxies;
pub use camera_replace_proxies::*;
use bevy::prelude::*;
use bevy_gltf_blueprints::GltfBlueprintsSet;
pub struct CameraPlugin;
impl Plugin for CameraPlugin {
fn build(&self, app: &mut App) {
app.register_type::<CameraTrackable>()
.register_type::<CameraTracking>()
.register_type::<CameraTrackingOffset>()
.add_systems(
Update,
(
camera_replace_proxies.after(GltfBlueprintsSet::AfterSpawn),
camera_track,
),
);
}
}

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use bevy::prelude::*;
use bevy::pbr::{CascadeShadowConfig, CascadeShadowConfigBuilder};
// fixme might be too specific to might needs, should it be moved out ? also these are all for lights, not models
pub fn lighting_replace_proxies(
mut added_dirights: Query<(Entity, &mut DirectionalLight), Added<DirectionalLight>>,
mut added_spotlights: Query<&mut SpotLight, Added<SpotLight>>,
mut commands: Commands,
) {
for (entity, mut light) in added_dirights.iter_mut() {
light.illuminance *= 5.0;
light.shadows_enabled = true;
let shadow_config: CascadeShadowConfig = CascadeShadowConfigBuilder {
first_cascade_far_bound: 15.0,
maximum_distance: 135.0,
..default()
}
.into();
commands.entity(entity).insert(shadow_config);
}
for mut light in added_spotlights.iter_mut() {
light.shadows_enabled = true;
}
}

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mod lighting_replace_proxies;
use lighting_replace_proxies::*;
use bevy::pbr::{DirectionalLightShadowMap, NotShadowCaster};
use bevy::prelude::*;
pub struct LightingPlugin;
impl Plugin for LightingPlugin {
fn build(&self, app: &mut App) {
app
.insert_resource(DirectionalLightShadowMap { size: 4096 })
// FIXME: adding these since they are missing
.register_type::<NotShadowCaster>()
.add_systems(PreUpdate, lighting_replace_proxies) // FIXME: you should actually run this in a specific state most likely
;
}
}

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pub mod camera;
pub use camera::*;
pub mod lighting;
pub use lighting::*;
pub mod relationships;
pub use relationships::*;
pub mod physics;
pub use physics::*;
use bevy::prelude::*;
use bevy_gltf_blueprints::*;
pub struct CorePlugin;
impl Plugin for CorePlugin {
fn build(&self, app: &mut App) {
app.add_plugins((
LightingPlugin,
CameraPlugin,
PhysicsPlugin,
BlueprintsPlugin {
library_folder: "models/library".into(),
format: GltfFormat::GLB,
aabbs: true,
..Default::default()
},
));
}
}

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use bevy::prelude::{info, ResMut};
use bevy_rapier3d::prelude::RapierConfiguration;
pub fn pause_physics(mut physics_config: ResMut<RapierConfiguration>) {
info!("pausing physics");
physics_config.physics_pipeline_active = false;
}
pub fn resume_physics(mut physics_config: ResMut<RapierConfiguration>) {
info!("unpausing physics");
physics_config.physics_pipeline_active = true;
}

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pub mod physics_replace_proxies;
use bevy_rapier3d::{
prelude::{NoUserData, RapierPhysicsPlugin},
render::RapierDebugRenderPlugin,
};
pub use physics_replace_proxies::*;
pub mod utils;
pub mod controls;
pub use controls::*;
use crate::state::GameState;
use bevy::prelude::*;
// use super::blueprints::GltfBlueprintsSet;
use bevy_gltf_blueprints::GltfBlueprintsSet;
// use crate::Collider;
pub struct PhysicsPlugin;
impl Plugin for PhysicsPlugin {
fn build(&self, app: &mut App) {
app.add_plugins((
RapierPhysicsPlugin::<NoUserData>::default(),
RapierDebugRenderPlugin::default(),
))
.register_type::<AutoAABBCollider>()
.register_type::<physics_replace_proxies::Collider>()
// find a way to make serde's stuff serializable
// .register_type::<bevy_rapier3d::dynamics::CoefficientCombineRule>()
//bevy_rapier3d::dynamics::CoefficientCombineRule
.add_systems(
Update,
physics_replace_proxies.after(GltfBlueprintsSet::AfterSpawn),
)
.add_systems(OnEnter(GameState::InGame), resume_physics)
.add_systems(OnExit(GameState::InGame), pause_physics);
}
}

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use bevy::prelude::*;
// use bevy::render::primitives::Aabb;
use bevy_rapier3d::geometry::Collider as RapierCollider;
use bevy_rapier3d::prelude::{ActiveCollisionTypes, ActiveEvents, ComputedColliderShape};
use super::utils::*;
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
pub enum Collider {
Ball(f32),
Cuboid(Vec3),
Capsule(Vec3, Vec3, f32),
#[default]
Mesh,
}
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
pub enum AutoAABBCollider {
#[default]
Cuboid,
Ball,
Capsule,
}
// replaces all physics stand-ins with the actual rapier types
pub fn physics_replace_proxies(
meshes: Res<Assets<Mesh>>,
mesh_handles: Query<&Handle<Mesh>>,
mut proxy_colliders: Query<
(Entity, &Collider, &Name, &mut Visibility),
(Without<RapierCollider>, Added<Collider>),
>,
// needed for tri meshes
children: Query<&Children>,
mut commands: Commands,
) {
for proxy_colider in proxy_colliders.iter_mut() {
let (entity, collider_proxy, name, mut visibility) = proxy_colider;
// we hide the collider meshes: perhaps they should be removed altogether once processed ?
if name.ends_with("_collider") || name.ends_with("_sensor") {
*visibility = Visibility::Hidden;
}
let mut rapier_collider: RapierCollider;
match collider_proxy {
Collider::Ball(radius) => {
info!("generating collider from proxy: ball");
rapier_collider = RapierCollider::ball(*radius);
commands.entity(entity)
.insert(rapier_collider)
.insert(ActiveEvents::COLLISION_EVENTS) // FIXME: this is just for demo purposes !!!
;
}
Collider::Cuboid(size) => {
info!("generating collider from proxy: cuboid");
rapier_collider = RapierCollider::cuboid(size.x, size.y, size.z);
commands.entity(entity)
.insert(rapier_collider)
.insert(ActiveEvents::COLLISION_EVENTS) // FIXME: this is just for demo purposes !!!
;
}
Collider::Capsule(a, b, radius) => {
info!("generating collider from proxy: capsule");
rapier_collider = RapierCollider::capsule(*a, *b, *radius);
commands.entity(entity)
.insert(rapier_collider)
.insert(ActiveEvents::COLLISION_EVENTS) // FIXME: this is just for demo purposes !!!
;
}
Collider::Mesh => {
info!("generating collider from proxy: mesh");
for (_, collider_mesh) in
Mesh::search_in_children(entity, &children, &meshes, &mesh_handles)
{
rapier_collider = RapierCollider::from_bevy_mesh(
collider_mesh,
&ComputedColliderShape::TriMesh,
)
.unwrap();
commands
.entity(entity)
.insert(rapier_collider)
// FIXME: this is just for demo purposes !!!
.insert(
ActiveCollisionTypes::default()
| ActiveCollisionTypes::KINEMATIC_STATIC
| ActiveCollisionTypes::STATIC_STATIC
| ActiveCollisionTypes::DYNAMIC_STATIC,
)
.insert(ActiveEvents::COLLISION_EVENTS);
// .insert(ActiveEvents::COLLISION_EVENTS)
// break;
// RapierCollider::convex_hull(points)
}
}
}
}
}

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use bevy::prelude::*;
use bevy::render::mesh::{MeshVertexAttributeId, PrimitiveTopology, VertexAttributeValues};
// TAKEN VERBATIB FROM https://github.com/janhohenheim/foxtrot/blob/src/util/trait_extension.rs
pub(crate) trait Vec3Ext: Copy {
fn is_approx_zero(self) -> bool;
fn split(self, up: Vec3) -> SplitVec3;
}
impl Vec3Ext for Vec3 {
#[inline]
fn is_approx_zero(self) -> bool {
self.length_squared() < 1e-5
}
#[inline]
fn split(self, up: Vec3) -> SplitVec3 {
let vertical = up * self.dot(up);
let horizontal = self - vertical;
SplitVec3 {
vertical,
horizontal,
}
}
}
#[derive(Debug, Clone, Copy, PartialEq)]
pub(crate) struct SplitVec3 {
pub(crate) vertical: Vec3,
pub(crate) horizontal: Vec3,
}
pub(crate) trait Vec2Ext: Copy {
fn is_approx_zero(self) -> bool;
fn x0y(self) -> Vec3;
}
impl Vec2Ext for Vec2 {
#[inline]
fn is_approx_zero(self) -> bool {
self.length_squared() < 1e-5
}
#[inline]
fn x0y(self) -> Vec3 {
Vec3::new(self.x, 0., self.y)
}
}
pub(crate) trait MeshExt {
fn transform(&mut self, transform: Transform);
fn transformed(&self, transform: Transform) -> Mesh;
fn read_coords_mut(&mut self, id: impl Into<MeshVertexAttributeId>) -> &mut Vec<[f32; 3]>;
fn search_in_children<'a>(
parent: Entity,
children: &'a Query<&Children>,
meshes: &'a Assets<Mesh>,
mesh_handles: &'a Query<&Handle<Mesh>>,
) -> Vec<(Entity, &'a Mesh)>;
}
impl MeshExt for Mesh {
fn transform(&mut self, transform: Transform) {
for coords in self.read_coords_mut(Mesh::ATTRIBUTE_POSITION.clone()) {
let vec3 = (*coords).into();
let transformed = transform.transform_point(vec3);
*coords = transformed.into();
}
for normal in self.read_coords_mut(Mesh::ATTRIBUTE_NORMAL.clone()) {
let vec3 = (*normal).into();
let transformed = transform.rotation.mul_vec3(vec3);
*normal = transformed.into();
}
}
fn transformed(&self, transform: Transform) -> Mesh {
let mut mesh = self.clone();
mesh.transform(transform);
mesh
}
fn read_coords_mut(&mut self, id: impl Into<MeshVertexAttributeId>) -> &mut Vec<[f32; 3]> {
// Guaranteed by Bevy for the current usage
match self
.attribute_mut(id)
.expect("Failed to read unknown mesh attribute")
{
VertexAttributeValues::Float32x3(values) => values,
// Guaranteed by Bevy for the current usage
_ => unreachable!(),
}
}
fn search_in_children<'a>(
parent: Entity,
children_query: &'a Query<&Children>,
meshes: &'a Assets<Mesh>,
mesh_handles: &'a Query<&Handle<Mesh>>,
) -> Vec<(Entity, &'a Mesh)> {
if let Ok(children) = children_query.get(parent) {
let mut result: Vec<_> = children
.iter()
.filter_map(|entity| mesh_handles.get(*entity).ok().map(|mesh| (*entity, mesh)))
.map(|(entity, mesh_handle)| {
(
entity,
meshes
.get(mesh_handle)
.expect("Failed to get mesh from handle"),
)
})
.map(|(entity, mesh)| {
assert_eq!(mesh.primitive_topology(), PrimitiveTopology::TriangleList);
(entity, mesh)
})
.collect();
let mut inner_result = children
.iter()
.flat_map(|entity| {
Self::search_in_children(*entity, children_query, meshes, mesh_handles)
})
.collect();
result.append(&mut inner_result);
result
} else {
Vec::new()
}
}
}
pub(crate) trait F32Ext: Copy {
fn is_approx_zero(self) -> bool;
fn squared(self) -> f32;
fn lerp(self, other: f32, ratio: f32) -> f32;
}
impl F32Ext for f32 {
#[inline]
fn is_approx_zero(self) -> bool {
self.abs() < 1e-5
}
#[inline]
fn squared(self) -> f32 {
self * self
}
#[inline]
fn lerp(self, other: f32, ratio: f32) -> f32 {
self.mul_add(1. - ratio, other * ratio)
}
}
pub(crate) trait TransformExt: Copy {
fn horizontally_looking_at(self, target: Vec3, up: Vec3) -> Transform;
fn lerp(self, other: Transform, ratio: f32) -> Transform;
}
impl TransformExt for Transform {
fn horizontally_looking_at(self, target: Vec3, up: Vec3) -> Transform {
let direction = target - self.translation;
let horizontal_direction = direction - up * direction.dot(up);
let look_target = self.translation + horizontal_direction;
self.looking_at(look_target, up)
}
fn lerp(self, other: Transform, ratio: f32) -> Transform {
let translation = self.translation.lerp(other.translation, ratio);
let rotation = self.rotation.slerp(other.rotation, ratio);
let scale = self.scale.lerp(other.scale, ratio);
Transform {
translation,
rotation,
scale,
}
}
}

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pub mod relationships_insert_dependant_components;
pub use relationships_insert_dependant_components::*;
use bevy::prelude::*;
pub struct EcsRelationshipsPlugin;
impl Plugin for EcsRelationshipsPlugin {
fn build(&self, app: &mut App) {
app;
}
}

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use bevy::prelude::*;
pub fn insert_dependant_component<
Dependant: Component,
Dependency: Component + std::default::Default,
>(
mut commands: Commands,
entities_without_depency: Query<(Entity, &Name), (With<Dependant>, Without<Dependency>)>,
) {
for (entity, name) in entities_without_depency.iter() {
let name = name.clone().to_string();
commands.entity(entity).insert(Dependency::default());
warn!("found an entity called {} with a {} component but without an {}, please check your assets", name.clone(), std::any::type_name::<Dependant>(), std::any::type_name::<Dependency>());
}
}

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use bevy::prelude::*;
use crate::{
assets::GameAssets,
state::{GameState, InAppRunning},
};
use bevy_gltf_blueprints::{BluePrintBundle, BlueprintName, GameWorldTag};
use bevy_rapier3d::prelude::Velocity;
use rand::Rng;
pub fn setup_game(
mut commands: Commands,
game_assets: Res<GameAssets>,
models: Res<Assets<bevy::gltf::Gltf>>,
mut next_game_state: ResMut<NextState<GameState>>,
) {
println!("setting up all stuff");
commands.insert_resource(AmbientLight {
color: Color::WHITE,
brightness: 0.2,
});
// here we actually spawn our game world/level
commands.spawn((
SceneBundle {
// note: because of this issue https://github.com/bevyengine/bevy/issues/10436, "world" is now a gltf file instead of a scene
scene: models
.get(game_assets.world.id())
.expect("main level should have been loaded")
.scenes[0]
.clone(),
..default()
},
bevy::prelude::Name::from("world"),
GameWorldTag,
InAppRunning,
));
next_game_state.set(GameState::InGame)
}
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
struct UnregisteredComponent;
pub fn spawn_test(
keycode: Res<Input<KeyCode>>,
mut commands: Commands,
mut game_world: Query<(Entity, &Children), With<GameWorldTag>>,
) {
if keycode.just_pressed(KeyCode::T) {
let world = game_world.single_mut();
let world = world.1[0];
let mut rng = rand::thread_rng();
let range = 5.5;
let x: f32 = rng.gen_range(-range..range);
let y: f32 = rng.gen_range(-range..range);
let mut rng = rand::thread_rng();
let range = 0.8;
let vel_x: f32 = rng.gen_range(-range..range);
let vel_y: f32 = rng.gen_range(2.0..2.5);
let vel_z: f32 = rng.gen_range(-range..range);
let name_index: u64 = rng.gen();
let new_entity = commands
.spawn((
BluePrintBundle {
blueprint: BlueprintName("Health_Pickup".to_string()),
transform: TransformBundle::from_transform(Transform::from_xyz(x, 2.0, y)),
..Default::default()
},
bevy::prelude::Name::from(format!("test{}", name_index)),
// BlueprintName("Health_Pickup".to_string()),
// SpawnHere,
// TransformBundle::from_transform(Transform::from_xyz(x, 2.0, y)),
Velocity {
linvel: Vec3::new(vel_x, vel_y, vel_z),
angvel: Vec3::new(0.0, 0.0, 0.0),
},
))
.id();
commands.entity(world).add_child(new_entity);
}
}
pub fn spawn_test_failing(
keycode: Res<Input<KeyCode>>,
mut commands: Commands,
mut game_world: Query<(Entity, &Children), With<GameWorldTag>>,
) {
if keycode.just_pressed(KeyCode::U) {
let world = game_world.single_mut();
let world = world.1[0];
let mut rng = rand::thread_rng();
let range = 5.5;
let x: f32 = rng.gen_range(-range..range);
let y: f32 = rng.gen_range(-range..range);
let mut rng = rand::thread_rng();
let range = 0.8;
let vel_x: f32 = rng.gen_range(-range..range);
let vel_y: f32 = rng.gen_range(2.0..2.5);
let vel_z: f32 = rng.gen_range(-range..range);
let name_index: u64 = rng.gen();
let new_entity = commands
.spawn((
BluePrintBundle {
blueprint: BlueprintName("Health_Pickup".to_string()),
transform: TransformBundle::from_transform(Transform::from_xyz(x, 2.0, y)),
..Default::default()
},
bevy::prelude::Name::from(format!("test{}", name_index)),
// BlueprintName("Health_Pickup".to_string()),
// SpawnHere,
// TransformBundle::from_transform(Transform::from_xyz(x, 2.0, y)),
Velocity {
linvel: Vec3::new(vel_x, vel_y, vel_z),
angvel: Vec3::new(0.0, 0.0, 0.0),
},
UnregisteredComponent,
))
.id();
commands.entity(world).add_child(new_entity);
}
}

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use bevy::prelude::*;
use crate::state::{AppState, GameState, InMainMenu};
pub fn setup_main_menu(mut commands: Commands) {
commands.spawn((Camera2dBundle::default(), InMainMenu));
commands.spawn((
TextBundle::from_section(
"SOME GAME TITLE !!",
TextStyle {
//font: asset_server.load("fonts/FiraMono-Medium.ttf"),
font_size: 18.0,
color: Color::WHITE,
..Default::default()
},
)
.with_style(Style {
position_type: PositionType::Absolute,
top: Val::Px(100.0),
left: Val::Px(200.0),
..default()
}),
InMainMenu,
));
commands.spawn((
TextBundle::from_section(
"New Game (press Enter to start, press T once the game is started for demo spawning)",
TextStyle {
//font: asset_server.load("fonts/FiraMono-Medium.ttf"),
font_size: 18.0,
color: Color::WHITE,
..Default::default()
},
)
.with_style(Style {
position_type: PositionType::Absolute,
top: Val::Px(200.0),
left: Val::Px(200.0),
..default()
}),
InMainMenu,
));
/*
commands.spawn((
TextBundle::from_section(
"Load Game",
TextStyle {
//font: asset_server.load("fonts/FiraMono-Medium.ttf"),
font_size: 18.0,
color: Color::WHITE,
..Default::default()
},
)
.with_style(Style {
position_type: PositionType::Absolute,
top: Val::Px(250.0),
left: Val::Px(200.0),
..default()
}),
InMainMenu
));
commands.spawn((
TextBundle::from_section(
"Exit Game",
TextStyle {
//font: asset_server.load("fonts/FiraMono-Medium.ttf"),
font_size: 18.0,
color: Color::WHITE,
..Default::default()
},
)
.with_style(Style {
position_type: PositionType::Absolute,
top: Val::Px(300.0),
left: Val::Px(200.0),
..default()
}),
InMainMenu
));*/
}
pub fn teardown_main_menu(bla: Query<Entity, With<InMainMenu>>, mut commands: Commands) {
for bli in bla.iter() {
commands.entity(bli).despawn_recursive();
}
}
pub fn main_menu(
keycode: Res<Input<KeyCode>>,
mut next_app_state: ResMut<NextState<AppState>>,
// mut next_game_state: ResMut<NextState<GameState>>,
// mut save_requested_events: EventWriter<SaveRequest>,
// mut load_requested_events: EventWriter<LoadRequest>,
) {
if keycode.just_pressed(KeyCode::Return) {
next_app_state.set(AppState::AppLoading);
// next_game_state.set(GameState::None);
}
if keycode.just_pressed(KeyCode::L) {
next_app_state.set(AppState::AppLoading);
// load_requested_events.send(LoadRequest { path: "toto".into() })
}
if keycode.just_pressed(KeyCode::S) {
// save_requested_events.send(SaveRequest { path: "toto".into() })
}
}

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pub mod in_game;
pub use in_game::*;
pub mod in_main_menu;
pub use in_main_menu::*;
pub mod picking;
pub use picking::*;
use crate::{
insert_dependant_component,
state::{AppState, GameState},
};
use bevy::prelude::*;
use bevy_rapier3d::prelude::*;
// this file is just for demo purposes, contains various types of components, systems etc
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
pub enum SoundMaterial {
Metal,
Wood,
Rock,
Cloth,
Squishy,
#[default]
None,
}
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
/// Demo marker component
pub struct Player;
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
/// Demo component showing auto injection of components
pub struct ShouldBeWithPlayer;
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
/// Demo marker component
pub struct Interactible;
fn player_move_demo(
keycode: Res<Input<KeyCode>>,
mut players: Query<&mut Transform, With<Player>>,
) {
let speed = 0.2;
if let Ok(mut player) = players.get_single_mut() {
if keycode.pressed(KeyCode::Left) {
player.translation.x += speed;
}
if keycode.pressed(KeyCode::Right) {
player.translation.x -= speed;
}
if keycode.pressed(KeyCode::Up) {
player.translation.z += speed;
}
if keycode.pressed(KeyCode::Down) {
player.translation.z -= speed;
}
}
}
// collision tests/debug
pub fn test_collision_events(
mut collision_events: EventReader<CollisionEvent>,
mut contact_force_events: EventReader<ContactForceEvent>,
) {
for collision_event in collision_events.read() {
println!("collision");
match collision_event {
CollisionEvent::Started(_entity1, _entity2, _) => {
println!("collision started")
}
CollisionEvent::Stopped(_entity1, _entity2, _) => {
println!("collision ended")
}
}
}
for contact_force_event in contact_force_events.read() {
println!("Received contact force event: {:?}", contact_force_event);
}
}
pub struct GamePlugin;
impl Plugin for GamePlugin {
fn build(&self, app: &mut App) {
app.add_plugins(PickingPlugin)
.register_type::<Interactible>()
.register_type::<SoundMaterial>()
.register_type::<Player>()
// little helper utility, to automatically inject components that are dependant on an other component
// ie, here an Entity with a Player component should also always have a ShouldBeWithPlayer component
// you get a warning if you use this, as I consider this to be stop-gap solution (usually you should have either a bundle, or directly define all needed components)
.add_systems(
Update,
(
// insert_dependant_component::<Player, ShouldBeWithPlayer>,
player_move_demo, //.run_if(in_state(AppState::Running)),
// test_collision_events
spawn_test,
spawn_test_failing,
)
.run_if(in_state(GameState::InGame)),
)
.add_systems(OnEnter(AppState::MenuRunning), setup_main_menu)
.add_systems(OnExit(AppState::MenuRunning), teardown_main_menu)
.add_systems(Update, main_menu.run_if(in_state(AppState::MenuRunning)))
.add_systems(OnEnter(AppState::AppRunning), setup_game);
}
}

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use super::Player;
use bevy::prelude::*;
use bevy_gltf_blueprints::GltfBlueprintsSet;
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
pub struct Pickable;
// very simple, crude picking (as in picking up objects) implementation
pub fn picking(
players: Query<&GlobalTransform, With<Player>>,
pickables: Query<(Entity, &GlobalTransform), With<Pickable>>,
mut commands: Commands,
) {
for player_transforms in players.iter() {
for (pickable, pickable_transforms) in pickables.iter() {
let distance = player_transforms
.translation()
.distance(pickable_transforms.translation());
if distance < 2.5 {
commands.entity(pickable).despawn_recursive();
}
}
}
}
pub struct PickingPlugin;
impl Plugin for PickingPlugin {
fn build(&self, app: &mut App) {
app.register_type::<Pickable>()
.add_systems(Update, (picking.after(GltfBlueprintsSet::AfterSpawn),));
}
}

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use bevy::prelude::*;
use bevy_editor_pls::prelude::*;
mod core;
use crate::core::*;
pub mod assets;
use assets::*;
pub mod state;
use state::*;
mod game;
use game::*;
mod test_components;
use test_components::*;
fn main() {
App::new()
.add_plugins((
DefaultPlugins.set(AssetPlugin::default()),
// editor
EditorPlugin::default(),
// our custom plugins
StatePlugin,
AssetsPlugin,
CorePlugin, // reusable plugins
GamePlugin, // specific to our game
ComponentsTestPlugin, // Showcases different type of components /structs
))
.run();
}

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use bevy::app::AppExit;
use bevy::prelude::*;
#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash, Default, States)]
pub enum AppState {
#[default]
CoreLoading,
MenuRunning,
AppLoading,
AppRunning,
AppEnding,
// FIXME: not sure
LoadingGame,
}
#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash, Default, States)]
pub enum GameState {
#[default]
None,
InMenu,
InGame,
InGameOver,
InSaving,
InLoading,
}
// tag components for all entities within a certain state (for despawning them if needed) , FIXME: seems kinda hack-ish
#[derive(Component)]
pub struct InCoreLoading;
#[derive(Component, Default)]
pub struct InMenuRunning;
#[derive(Component)]
pub struct InAppLoading;
#[derive(Component)]
pub struct InAppRunning;
// components for tagging in game vs in game menu stuff
#[derive(Component, Default)]
pub struct InMainMenu;
#[derive(Component, Default)]
pub struct InMenu;
#[derive(Component, Default)]
pub struct InGame;
pub struct StatePlugin;
impl Plugin for StatePlugin {
fn build(&self, app: &mut App) {
app.add_state::<AppState>().add_state::<GameState>();
}
}

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use bevy::prelude::*;
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
struct UnitTest;
#[derive(Component, Reflect, Default, Debug, Deref, DerefMut)]
#[reflect(Component)]
struct TuppleTestF32(f32);
#[derive(Component, Reflect, Default, Debug, Deref, DerefMut)]
#[reflect(Component)]
struct TuppleTestU64(u64);
#[derive(Component, Reflect, Default, Debug, Deref, DerefMut)]
#[reflect(Component)]
pub struct TuppleTestStr(String);
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
struct TuppleTest2(f32, u64, String);
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
struct TuppleTestBool(bool);
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
struct TuppleVec2(Vec2);
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
struct TuppleVec3(Vec3);
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
struct TuppleVec(Vec<String>);
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
struct TuppleTestColor(Color);
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
struct BasicTest {
a: f32,
b: u64,
c: String,
}
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
pub enum EnumTest {
Metal,
Wood,
Rock,
Cloth,
Squishy,
#[default]
None,
}
pub struct ComponentsTestPlugin;
impl Plugin for ComponentsTestPlugin {
fn build(&self, app: &mut App) {
app.register_type::<BasicTest>()
.register_type::<UnitTest>()
.register_type::<TuppleTestF32>()
.register_type::<TuppleTestU64>()
.register_type::<TuppleTestStr>()
.register_type::<TuppleTestBool>()
.register_type::<TuppleTest2>()
.register_type::<TuppleVec2>()
.register_type::<TuppleVec3>()
.register_type::<EnumTest>()
.register_type::<TuppleTestColor>()
.register_type::<TuppleVec>()
.register_type::<Vec<String>>();
}
}

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{"rustc_fingerprint":14672523188090023269,"outputs":{"4614504638168534921":{"success":true,"status":"","code":0,"stdout":"rustc 1.70.0 (90c541806 2023-05-31)\nbinary: rustc\ncommit-hash: 90c541806f23a127002de5b4038be731ba1458ca\ncommit-date: 2023-05-31\nhost: x86_64-unknown-linux-gnu\nrelease: 1.70.0\nLLVM version: 16.0.2\n","stderr":""}},"successes":{}}

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27
examples/bevy_gltf_components/basic_wasm/Cargo.toml Normal file
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[package]
name = "bevy_gltf_components_basic_wasm_example"
version = "0.3.0"
edition = "2021"
license = "MIT OR Apache-2.0"
[dependencies]
bevy="0.12"
bevy_gltf_components = { path = "../../../crates/bevy_gltf_components" }
bevy_rapier3d = { version = "0.23.0", features = [ "serde-serialize", "debug-render-3d", "enhanced-determinism"] }
bevy_editor_pls = { version = "0.6" }
[profile.wasm-release]
# Use release profile as default values
inherits = "release"
# Optimize with size in mind, also try "s", sometimes it is better.
# This doesn't increase compilation times compared to -O3, great improvements
opt-level = "z"
# Do a second optimization pass removing duplicate or unused code from dependencies.
# Slows compile times, marginal improvements
lto = "fat"
# When building crates, optimize larger chunks at a time
# Slows compile times, marginal improvements
codegen-units = 1

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# Basic bevy_gltf_components wasm demo
## Setup
as per the bevy documentation:
```shell
rustup target add wasm32-unknown-unknown
cargo install wasm-bindgen-cli
```
## Building this example
navigate to the current folder , and then
```shell
cargo build --release --target wasm32-unknown-unknown --target-dir ./target
wasm-bindgen --out-name wasm_example \
--out-dir ./target/wasm \
--target web target/wasm32-unknown-unknown/release/bevy_gltf_components_basic_wasm_example.wasm
```
## Running this example
run a web server in the current folder, and navigate to the page, you should see the example in your browser
### Additional notes
## Information
- the Bevy/ Rust code is [here](./src/main.rs)
- the Blender file is [here](./assets/basic.blend)
- I added [bevy_editor_pls](https://github.com/jakobhellermann/bevy_editor_pls) as a dependency for convenience so you can inspect your level/components

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<html>
<head>
<meta charset="UTF-8" />
<style>
body {
background: linear-gradient(
135deg,
white 0%,
white 49%,
black 49%,
black 51%,
white 51%,
white 100%
);
background-repeat: repeat;
background-size: 20px 20px;
}
canvas {
background-color: white;
}
</style>
</head>
<script type="module">
import init from './target/wasm/wasm_example.js'
init()
</script>
</html>

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examples/bevy_gltf_components/basic_wasm/src/core/camera/camera_replace_proxies.rs Normal file
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use bevy::core_pipeline::bloom::{BloomCompositeMode, BloomSettings};
use bevy::core_pipeline::tonemapping::{DebandDither, Tonemapping};
use bevy::prelude::*;
use super::CameraTrackingOffset;
pub fn camera_replace_proxies(
mut commands: Commands,
mut added_cameras: Query<(Entity, &mut Camera), (Added<Camera>, With<CameraTrackingOffset>)>,
) {
for (entity, mut camera) in added_cameras.iter_mut() {
info!("detected added camera, updating proxy");
camera.hdr = true;
commands
.entity(entity)
.insert(DebandDither::Enabled)
.insert(Tonemapping::BlenderFilmic)
.insert(BloomSettings {
intensity: 0.01,
composite_mode: BloomCompositeMode::Additive,
..default()
});
}
}

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use bevy::prelude::*;
#[derive(Component, Reflect, Debug)]
#[reflect(Component)]
/// Component for cameras, with an offset from the Trackable target
///
pub struct CameraTracking {
pub offset: Vec3,
}
impl Default for CameraTracking {
fn default() -> Self {
CameraTracking {
offset: Vec3::new(0.0, 6.0, 8.0),
}
}
}
#[derive(Component, Reflect, Debug, Deref, DerefMut)]
#[reflect(Component)]
/// Component for cameras, with an offset from the Trackable target
pub struct CameraTrackingOffset(Vec3);
impl Default for CameraTrackingOffset {
fn default() -> Self {
CameraTrackingOffset(Vec3::new(0.0, 6.0, 8.0))
}
}
impl CameraTrackingOffset {
fn new(input: Vec3) -> Self {
CameraTrackingOffset(input)
}
}
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
/// Add this component to an entity if you want it to be tracked by a Camera
pub struct CameraTrackable;
pub fn camera_track(
mut tracking_cameras: Query<
(&mut Transform, &CameraTrackingOffset),
(
With<Camera>,
With<CameraTrackingOffset>,
Without<CameraTrackable>,
),
>,
camera_tracked: Query<&Transform, With<CameraTrackable>>,
) {
for (mut camera_transform, tracking_offset) in tracking_cameras.iter_mut() {
for tracked_transform in camera_tracked.iter() {
let target_position = tracked_transform.translation + tracking_offset.0;
let eased_position = camera_transform.translation.lerp(target_position, 0.1);
camera_transform.translation = eased_position; // + tracking.offset;// tracked_transform.translation + tracking.offset;
*camera_transform = camera_transform.looking_at(tracked_transform.translation, Vec3::Y);
}
}
}

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pub mod camera_tracking;
pub use camera_tracking::*;
pub mod camera_replace_proxies;
pub use camera_replace_proxies::*;
use bevy::prelude::*;
pub struct CameraPlugin;
impl Plugin for CameraPlugin {
fn build(&self, app: &mut App) {
app.register_type::<CameraTrackable>()
.register_type::<CameraTracking>()
.register_type::<CameraTrackingOffset>()
.add_systems(Update, (camera_replace_proxies, camera_track));
}
}

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use bevy::prelude::*;
use bevy::pbr::{CascadeShadowConfig, CascadeShadowConfigBuilder};
// fixme might be too specific to might needs, should it be moved out ? also these are all for lights, not models
pub fn lighting_replace_proxies(
mut added_dirights: Query<(Entity, &mut DirectionalLight), Added<DirectionalLight>>,
mut added_spotlights: Query<&mut SpotLight, Added<SpotLight>>,
mut commands: Commands,
) {
for (entity, mut light) in added_dirights.iter_mut() {
light.illuminance *= 5.0;
light.shadows_enabled = true;
let shadow_config: CascadeShadowConfig = CascadeShadowConfigBuilder {
first_cascade_far_bound: 15.0,
maximum_distance: 135.0,
..default()
}
.into();
commands.entity(entity).insert(shadow_config);
}
for mut light in added_spotlights.iter_mut() {
light.shadows_enabled = true;
}
}

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mod lighting_replace_proxies;
use lighting_replace_proxies::*;
use bevy::pbr::{DirectionalLightShadowMap, NotShadowCaster};
use bevy::prelude::*;
pub struct LightingPlugin;
impl Plugin for LightingPlugin {
fn build(&self, app: &mut App) {
app
.insert_resource(DirectionalLightShadowMap { size: 4096 })
// FIXME: adding these since they are missing
.register_type::<NotShadowCaster>()
.add_systems(PreUpdate, lighting_replace_proxies) // FIXME: you should actually run this in a specific state most likely
;
}
}

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pub mod camera;
pub use camera::*;
pub mod lighting;
pub use lighting::*;
pub mod relationships;
pub use relationships::*;
pub mod physics;
pub use physics::*;
use bevy::prelude::*;
pub struct CorePlugin;
impl Plugin for CorePlugin {
fn build(&self, app: &mut App) {
app.add_plugins((LightingPlugin, CameraPlugin, PhysicsPlugin));
}
}

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use bevy::prelude::ResMut;
use bevy_rapier3d::prelude::RapierConfiguration;
pub fn pause_physics(mut physics_config: ResMut<RapierConfiguration>) {
physics_config.physics_pipeline_active = false;
}
pub fn resume_physics(mut physics_config: ResMut<RapierConfiguration>) {
physics_config.physics_pipeline_active = true;
}

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pub mod physics_replace_proxies;
pub use physics_replace_proxies::*;
pub mod utils;
pub mod controls;
pub use controls::*;
use bevy::prelude::*;
// use crate::Collider;
pub struct PhysicsPlugin;
impl Plugin for PhysicsPlugin {
fn build(&self, app: &mut App) {
app
.register_type::<AutoAABBCollider>()
.register_type::<physics_replace_proxies::Collider>()
// find a way to make serde's stuff serializable
// .register_type::<bevy_rapier3d::dynamics::CoefficientCombineRule>()
//bevy_rapier3d::dynamics::CoefficientCombineRule
.add_systems(Update, physics_replace_proxies)
//.add_system(pause_physics.in_schedule(OnEnter(GameState::InMenu)))
//.add_system(resume_physics.in_schedule(OnEnter(GameState::InGame)))
;
}
}

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use bevy::prelude::*;
// use bevy::render::primitives::Aabb;
use bevy_rapier3d::geometry::Collider as RapierCollider;
use bevy_rapier3d::prelude::{ActiveCollisionTypes, ActiveEvents, ComputedColliderShape};
use super::utils::*;
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
pub enum Collider {
Ball(f32),
Cuboid(Vec3),
Capsule(Vec3, Vec3, f32),
#[default]
Mesh,
}
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
pub enum AutoAABBCollider {
#[default]
Cuboid,
Ball,
Capsule,
}
// replaces all physics stand-ins with the actual rapier types
pub fn physics_replace_proxies(
meshes: Res<Assets<Mesh>>,
mesh_handles: Query<&Handle<Mesh>>,
mut proxy_colliders: Query<
(Entity, &Collider, &Name, &mut Visibility),
(Without<RapierCollider>, Added<Collider>),
>,
// needed for tri meshes
children: Query<&Children>,
mut commands: Commands,
) {
for proxy_colider in proxy_colliders.iter_mut() {
let (entity, collider_proxy, name, mut visibility) = proxy_colider;
// we hide the collider meshes: perhaps they should be removed altogether once processed ?
if name.ends_with("_collider") || name.ends_with("_sensor") {
*visibility = Visibility::Hidden;
}
let mut rapier_collider: RapierCollider;
match collider_proxy {
Collider::Ball(radius) => {
println!("proxy: ball");
rapier_collider = RapierCollider::ball(*radius);
commands.entity(entity)
.insert(rapier_collider)
.insert(ActiveEvents::COLLISION_EVENTS) // FIXME: this is just for demo purposes !!!
;
}
Collider::Cuboid(size) => {
println!("proxy: cuboid");
rapier_collider = RapierCollider::cuboid(size.x, size.y, size.z);
commands.entity(entity)
.insert(rapier_collider)
.insert(ActiveEvents::COLLISION_EVENTS) // FIXME: this is just for demo purposes !!!
;
}
Collider::Capsule(a, b, radius) => {
println!("proxy: capsule");
rapier_collider = RapierCollider::capsule(*a, *b, *radius);
commands.entity(entity)
.insert(rapier_collider)
.insert(ActiveEvents::COLLISION_EVENTS) // FIXME: this is just for demo purposes !!!
;
}
Collider::Mesh => {
println!("proxy: mesh");
for (_, collider_mesh) in
Mesh::search_in_children(entity, &children, &meshes, &mesh_handles)
{
rapier_collider = RapierCollider::from_bevy_mesh(
collider_mesh,
&ComputedColliderShape::TriMesh,
)
.unwrap();
commands
.entity(entity)
.insert(rapier_collider)
// FIXME: this is just for demo purposes !!!
.insert(
ActiveCollisionTypes::default()
| ActiveCollisionTypes::KINEMATIC_STATIC
| ActiveCollisionTypes::STATIC_STATIC
| ActiveCollisionTypes::DYNAMIC_STATIC,
)
.insert(ActiveEvents::COLLISION_EVENTS);
// .insert(ActiveEvents::COLLISION_EVENTS)
// break;
// RapierCollider::convex_hull(points)
}
}
}
}
}

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use bevy::prelude::*;
use bevy::render::mesh::{MeshVertexAttributeId, PrimitiveTopology, VertexAttributeValues};
// TAKEN VERBATIB FROM https://github.com/janhohenheim/foxtrot/blob/src/util/trait_extension.rs
pub(crate) trait Vec3Ext: Copy {
fn is_approx_zero(self) -> bool;
fn split(self, up: Vec3) -> SplitVec3;
}
impl Vec3Ext for Vec3 {
#[inline]
fn is_approx_zero(self) -> bool {
self.length_squared() < 1e-5
}
#[inline]
fn split(self, up: Vec3) -> SplitVec3 {
let vertical = up * self.dot(up);
let horizontal = self - vertical;
SplitVec3 {
vertical,
horizontal,
}
}
}
#[derive(Debug, Clone, Copy, PartialEq)]
pub(crate) struct SplitVec3 {
pub(crate) vertical: Vec3,
pub(crate) horizontal: Vec3,
}
pub(crate) trait Vec2Ext: Copy {
fn is_approx_zero(self) -> bool;
fn x0y(self) -> Vec3;
}
impl Vec2Ext for Vec2 {
#[inline]
fn is_approx_zero(self) -> bool {
self.length_squared() < 1e-5
}
#[inline]
fn x0y(self) -> Vec3 {
Vec3::new(self.x, 0., self.y)
}
}
pub(crate) trait MeshExt {
fn transform(&mut self, transform: Transform);
fn transformed(&self, transform: Transform) -> Mesh;
fn read_coords_mut(&mut self, id: impl Into<MeshVertexAttributeId>) -> &mut Vec<[f32; 3]>;
fn search_in_children<'a>(
parent: Entity,
children: &'a Query<&Children>,
meshes: &'a Assets<Mesh>,
mesh_handles: &'a Query<&Handle<Mesh>>,
) -> Vec<(Entity, &'a Mesh)>;
}
impl MeshExt for Mesh {
fn transform(&mut self, transform: Transform) {
for coords in self.read_coords_mut(Mesh::ATTRIBUTE_POSITION.clone()) {
let vec3 = (*coords).into();
let transformed = transform.transform_point(vec3);
*coords = transformed.into();
}
for normal in self.read_coords_mut(Mesh::ATTRIBUTE_NORMAL.clone()) {
let vec3 = (*normal).into();
let transformed = transform.rotation.mul_vec3(vec3);
*normal = transformed.into();
}
}
fn transformed(&self, transform: Transform) -> Mesh {
let mut mesh = self.clone();
mesh.transform(transform);
mesh
}
fn read_coords_mut(&mut self, id: impl Into<MeshVertexAttributeId>) -> &mut Vec<[f32; 3]> {
// Guaranteed by Bevy for the current usage
match self
.attribute_mut(id)
.expect("Failed to read unknown mesh attribute")
{
VertexAttributeValues::Float32x3(values) => values,
// Guaranteed by Bevy for the current usage
_ => unreachable!(),
}
}
fn search_in_children<'a>(
parent: Entity,
children_query: &'a Query<&Children>,
meshes: &'a Assets<Mesh>,
mesh_handles: &'a Query<&Handle<Mesh>>,
) -> Vec<(Entity, &'a Mesh)> {
if let Ok(children) = children_query.get(parent) {
let mut result: Vec<_> = children
.iter()
.filter_map(|entity| mesh_handles.get(*entity).ok().map(|mesh| (*entity, mesh)))
.map(|(entity, mesh_handle)| {
(
entity,
meshes
.get(mesh_handle)
.expect("Failed to get mesh from handle"),
)
})
.map(|(entity, mesh)| {
assert_eq!(mesh.primitive_topology(), PrimitiveTopology::TriangleList);
(entity, mesh)
})
.collect();
let mut inner_result = children
.iter()
.flat_map(|entity| {
Self::search_in_children(*entity, children_query, meshes, mesh_handles)
})
.collect();
result.append(&mut inner_result);
result
} else {
Vec::new()
}
}
}
pub(crate) trait F32Ext: Copy {
fn is_approx_zero(self) -> bool;
fn squared(self) -> f32;
fn lerp(self, other: f32, ratio: f32) -> f32;
}
impl F32Ext for f32 {
#[inline]
fn is_approx_zero(self) -> bool {
self.abs() < 1e-5
}
#[inline]
fn squared(self) -> f32 {
self * self
}
#[inline]
fn lerp(self, other: f32, ratio: f32) -> f32 {
self.mul_add(1. - ratio, other * ratio)
}
}
pub(crate) trait TransformExt: Copy {
fn horizontally_looking_at(self, target: Vec3, up: Vec3) -> Transform;
fn lerp(self, other: Transform, ratio: f32) -> Transform;
}
impl TransformExt for Transform {
fn horizontally_looking_at(self, target: Vec3, up: Vec3) -> Transform {
let direction = target - self.translation;
let horizontal_direction = direction - up * direction.dot(up);
let look_target = self.translation + horizontal_direction;
self.looking_at(look_target, up)
}
fn lerp(self, other: Transform, ratio: f32) -> Transform {
let translation = self.translation.lerp(other.translation, ratio);
let rotation = self.rotation.slerp(other.rotation, ratio);
let scale = self.scale.lerp(other.scale, ratio);
Transform {
translation,
rotation,
scale,
}
}
}

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pub mod relationships_insert_dependant_components;
pub use relationships_insert_dependant_components::*;
use bevy::prelude::*;
pub struct EcsRelationshipsPlugin;
impl Plugin for EcsRelationshipsPlugin {
fn build(&self, app: &mut App) {
app;
}
}

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use bevy::prelude::*;
pub fn insert_dependant_component<
Dependant: Component,
Dependency: Component + std::default::Default,
>(
mut commands: Commands,
entities_without_depency: Query<(Entity, &Name), (With<Dependant>, Without<Dependency>)>,
) {
for (entity, name) in entities_without_depency.iter() {
let name = name.clone().to_string();
commands.entity(entity).insert(Dependency::default());
warn!("found an entity called {} with a {} component but without an {}, please check your assets", name.clone(), std::any::type_name::<Dependant>(), std::any::type_name::<Dependency>());
}
}

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use crate::insert_dependant_component;
use bevy::prelude::*;
use bevy_rapier3d::prelude::*;
// this file is just for demo purposes, contains various types of components, systems etc
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
pub enum SoundMaterial {
Metal,
Wood,
Rock,
Cloth,
Squishy,
#[default]
None,
}
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
/// Demo marker component
pub struct Player;
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
/// Demo component showing auto injection of components
pub struct ShouldBeWithPlayer;
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
/// Demo marker component
pub struct Interactible;
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
/// Demo marker component
pub struct Pickable;
fn player_move_demo(
keycode: Res<Input<KeyCode>>,
mut players: Query<&mut Transform, With<Player>>,
) {
let speed = 0.2;
if let Ok(mut player) = players.get_single_mut() {
if keycode.pressed(KeyCode::Left) {
player.translation.x += speed;
}
if keycode.pressed(KeyCode::Right) {
player.translation.x -= speed;
}
if keycode.pressed(KeyCode::Up) {
player.translation.z += speed;
}
if keycode.pressed(KeyCode::Down) {
player.translation.z -= speed;
}
}
}
// collision tests/debug
pub fn test_collision_events(
mut collision_events: EventReader<CollisionEvent>,
mut contact_force_events: EventReader<ContactForceEvent>,
) {
for collision_event in collision_events.read() {
println!("collision");
match collision_event {
CollisionEvent::Started(_entity1, _entity2, _) => {
println!("collision started")
}
CollisionEvent::Stopped(_entity1, _entity2, _) => {
println!("collision ended")
}
}
}
for contact_force_event in contact_force_events.read() {
println!("Received contact force event: {:?}", contact_force_event);
}
}
pub struct DemoPlugin;
impl Plugin for DemoPlugin {
fn build(&self, app: &mut App) {
app.register_type::<Interactible>()
.register_type::<Pickable>()
.register_type::<SoundMaterial>()
.register_type::<Player>()
// little helper utility, to automatically inject components that are dependant on an other component
// ie, here an Entity with a Player component should also always have a ShouldBeWithPlayer component
// you get a warning if you use this, as I consider this to be stop-gap solution (usually you should have either a bundle, or directly define all needed components)
.add_systems(
Update,
(
insert_dependant_component::<Player, ShouldBeWithPlayer>,
player_move_demo, //.run_if(in_state(AppState::Running)),
test_collision_events,
),
);
}
}

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use bevy::{gltf::Gltf, prelude::*};
use bevy_editor_pls::prelude::*;
use bevy_gltf_components::ComponentsFromGltfPlugin;
use bevy_rapier3d::prelude::*;
mod core;
use crate::core::*;
mod game;
use game::*;
mod test_components;
use test_components::*;
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
/// helper marker component
pub struct LoadedMarker;
#[derive(Debug, Clone, Copy, Default, Eq, PartialEq, Hash, States)]
enum AppState {
#[default]
Loading,
Running,
}
fn main() {
App::new()
.add_plugins((
DefaultPlugins.set(AssetPlugin::default()),
// editor
EditorPlugin::default(),
// physics
RapierPhysicsPlugin::<NoUserData>::default(),
RapierDebugRenderPlugin::default(),
// our custom plugins
ComponentsFromGltfPlugin,
CorePlugin, // reusable plugins
DemoPlugin, // specific to our game
ComponentsTestPlugin, // Showcases different type of components /structs
))
.add_state::<AppState>()
.add_systems(Startup, setup)
.add_systems(Update, (spawn_level.run_if(in_state(AppState::Loading)),))
.run();
}
#[derive(Resource)]
pub struct MyGltf(pub Handle<Gltf>);
// we preload the data here, but this is for DEMO PURPOSES ONLY !! Please use https://github.com/NiklasEi/bevy_asset_loader or a similar logic to seperate loading / pre processing
// of assets from the spawning
// MyGltf is also just for the same purpose, you do not need it in a real scenario
// the states here are also for demo purposes only,
fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
commands.insert_resource(MyGltf(asset_server.load("models/level1.glb")));
}
fn spawn_level(
mut commands: Commands,
scene_markers: Query<&LoadedMarker>,
mut asset_event_reader: EventReader<AssetEvent<Gltf>>,
mut next_state: ResMut<NextState<AppState>>,
models: Res<Assets<bevy::gltf::Gltf>>,
) {
if let Some(asset_event) = asset_event_reader.read().next() {
match asset_event {
AssetEvent::Added { id } => {
info!("GLTF loaded/ added {:?}", asset_event);
let my_gltf = models.get(*id).unwrap();
if scene_markers.is_empty() {
info!("spawning scene");
commands.spawn((
SceneBundle {
scene: my_gltf.scenes[0].clone(),
..default()
},
LoadedMarker,
Name::new("Level1"),
));
next_state.set(AppState::Running);
}
}
_ => (),
}
}
}

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use bevy::prelude::*;
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
struct UnitTest;
#[derive(Component, Reflect, Default, Debug, Deref, DerefMut)]
#[reflect(Component)]
struct TuppleTestF32(f32);
#[derive(Component, Reflect, Default, Debug, Deref, DerefMut)]
#[reflect(Component)]
struct TuppleTestU64(u64);
#[derive(Component, Reflect, Default, Debug, Deref, DerefMut)]
#[reflect(Component)]
pub struct TuppleTestStr(String);
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
struct TuppleTest2(f32, u64, String);
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
struct TuppleTestBool(bool);
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
struct TuppleVec2(Vec2);
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
struct TuppleVec3(Vec3);
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
struct TuppleVec(Vec<String>);
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
struct TuppleTestColor(Color);
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
struct BasicTest {
a: f32,
b: u64,
c: String,
}
#[derive(Component, Reflect, Default, Debug)]
#[reflect(Component)]
pub enum EnumTest {
Metal,
Wood,
Rock,
Cloth,
Squishy,
#[default]
None,
}
pub struct ComponentsTestPlugin;
impl Plugin for ComponentsTestPlugin {
fn build(&self, app: &mut App) {
app.register_type::<BasicTest>()
.register_type::<UnitTest>()
.register_type::<TuppleTestF32>()
.register_type::<TuppleTestU64>()
.register_type::<TuppleTestStr>()
.register_type::<TuppleTestBool>()
.register_type::<TuppleTest2>()
.register_type::<TuppleVec2>()
.register_type::<TuppleVec3>()
.register_type::<EnumTest>()
.register_type::<TuppleTestColor>()
.register_type::<TuppleVec>()
.register_type::<Vec<String>>();
}
}