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explosion_example.rs
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explosion_example.rs
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use bevy::prelude::*;
use bevy_flycam::*;
use bevy_inspector_egui::WorldInspectorPlugin;
use bevy_tickles::components::modifiers::ParticleGravity;
use bevy_tickles::prelude::modifiers::{ColorOverLifeTime, RotationOverVelocity, SizeOverTime};
use bevy_tickles::prelude::shapes::{Circle, Sphere};
use bevy_tickles::prelude::*;
fn main() {
App::new()
.add_plugins(DefaultPlugins)
.add_plugin(ParticlesPlugin)
.add_plugin(WorldInspectorPlugin::default())
.add_plugin(NoCameraPlayerPlugin)
.add_startup_system(spawn_particle_system)
.add_startup_system(spawn_cubes)
.run();
}
fn spawn_particle_system(
mut commands: Commands,
asset_server: Res<AssetServer>,
mut atlases: ResMut<Assets<TextureAtlas>>,
) {
commands
.spawn_bundle(PerspectiveCameraBundle {
transform: Transform::from_xyz(0.0, 5.0, 20.0).looking_at(Vec3::ZERO, Vec3::Y),
..PerspectiveCameraBundle::new_3d()
})
.insert(FlyCam);
commands.spawn_bundle(DirectionalLightBundle::default());
let scorch_texture = asset_server.load("kenney/scorch_01.png");
let smoke_texture = asset_server.load("smoke.png");
let explosion_texture = asset_server.load("explosion.png");
let explosion_texture_atlas = atlases.add(TextureAtlas::from_grid(
explosion_texture,
Vec2::splat(256.0),
8,
6,
));
let duration = EmitterDuration::FixedDuration {
duration: 5.0,
looping: true,
};
commands
.spawn_bundle(ParticleSystemBundle {
transform: Transform::from_xyz(0., 1., 0.),
material: ParticleTextureSheet {
texture_atlas: explosion_texture_atlas.clone(),
mode: TextureSheetMode::AnimateOverLifetime(TextureSheetAnimation {
looping_mode: TextureSheetLoopingMode::None,
..Default::default()
}),
}
.into(),
particle_params: ParticleParams {
start_size: 10.0.into(),
start_speed: 0.0.into(),
start_lifetime: 1.0.into(),
..Default::default()
},
particle_emitter: ParticleEmitter {
rate: 0.0,
shape: EmitterShape {
shape: Shape::Sphere(Sphere {
radius: 0.0,
..Default::default()
}),
..Default::default()
},
bursts: vec![Burst {
time: 0.0,
count: RangeOrFixed::Fixed(1),
}],
duration,
..Default::default()
},
..Default::default()
})
.insert(Name::new("Explosion System"));
commands
.spawn_bundle(ParticleSystemBundle {
transform: Transform::from_xyz(0., 0., 0.),
material: ParticleMaterial::Image(smoke_texture),
particle_params: ParticleParams {
start_size: 0.1.into(),
start_speed: 6.0.into(),
start_lifetime: 2.0.into(),
rotation: RotationMode::FreeRotation {
start_rotation: (-6.0..=6.0).into(),
start_angular_velocity: 0.0.into(),
},
..Default::default()
},
particle_emitter: ParticleEmitter {
rate: 0.0,
shape: EmitterShape {
shape: Shape::Circle(Circle { radius: 1.0 }),
thickness: 0.0,
mode: EmissionMode::Spread(EmissionSpread {
spreads: [
AxisSpread::none(),
AxisSpread {
amount: 1.0 / 50.0,
uniform: true,
..Default::default()
},
AxisSpread::none(),
],
..Default::default()
}),
..Default::default()
},
bursts: vec![Burst {
time: 0.0,
count: RangeOrFixed::Fixed(50),
}],
duration,
..Default::default()
},
..Default::default()
})
.insert(ColorOverLifeTime(
ColorGradient::empty()
.add_point(0.0, Color::NONE)
.add_point(0.5, Color::GRAY)
.add_point(1.0, Color::NONE),
))
.insert(SizeOverTime(1.5))
.insert(RotationOverVelocity {
value: 1.0,
abs: false,
})
.insert(Name::new("Smoke System"));
commands
.spawn_bundle(ParticleSystemBundle {
transform: Transform::from_xyz(0., 0., 0.),
material: ParticleMaterial::Image(scorch_texture),
particle_params: ParticleParams {
start_size: 1.0.into(),
start_speed: (5.0..=6.0).into(),
start_lifetime: 3.0.into(),
rotation: RotationMode::AlignToDirection { offset: 0.0 },
..Default::default()
},
particle_emitter: ParticleEmitter {
rate: 0.0,
shape: EmitterShape {
shape: Shape::Sphere(Sphere {
radius: 2.0,
hemisphere: true,
}),
thickness: 0.0,
..Default::default()
},
bursts: vec![Burst {
time: 0.0,
count: RangeOrFixed::Fixed(50),
}],
duration,
..Default::default()
},
..Default::default()
})
.insert(ColorOverLifeTime(
ColorGradient::empty()
.add_point(0.0, Color::ORANGE_RED)
.add_point(1.0, Color::NONE),
))
.insert(ParticleGravity(Vec3::Y * -1.5))
.insert(Name::new("Fire balls System"));
}
fn spawn_cubes(
mut commands: Commands,
mut meshes: ResMut<Assets<Mesh>>,
mut materials: ResMut<Assets<StandardMaterial>>,
) {
let mesh = meshes.add(shape::Cube::new(1.).into());
commands.spawn_bundle(PbrBundle {
mesh: mesh.clone(),
material: materials.add(Color::WHITE.into()),
transform: Transform::from_xyz(0., 0., 0.),
..Default::default()
});
commands.spawn_bundle(PbrBundle {
mesh: mesh.clone(),
material: materials.add(Color::RED.into()),
transform: Transform::from_xyz(-5., 0., 0.),
..Default::default()
});
commands.spawn_bundle(PbrBundle {
mesh: mesh.clone(),
material: materials.add(Color::BLUE.into()),
transform: Transform::from_xyz(5., 0., 0.),
..Default::default()
});
commands.spawn_bundle(PbrBundle {
mesh: mesh.clone(),
material: materials.add(Color::GREEN.into()),
transform: Transform::from_xyz(0., 0., 5.),
..Default::default()
});
commands.spawn_bundle(PbrBundle {
mesh,
material: materials.add(Color::YELLOW.into()),
transform: Transform::from_xyz(0., 0., -5.),
..Default::default()
});
}