46 lines
1.3 KiB
Rust
46 lines
1.3 KiB
Rust
use bevy::prelude::*;
|
|
|
|
fn main() {
|
|
App::build()
|
|
.add_default_plugins()
|
|
.add_startup_system(setup.system())
|
|
.add_system(placement_system.system())
|
|
.add_plugin(DiagnosticsPlugin::default())
|
|
.run();
|
|
}
|
|
|
|
fn placement_system(
|
|
time: Res<Time>,
|
|
materials: Res<Assets<ColorMaterial>>,
|
|
mut node: ComMut<Node>,
|
|
material_handle: Com<Handle<ColorMaterial>>,
|
|
) {
|
|
let material = materials.get(&material_handle).unwrap();
|
|
if material.color.r > 0.2 {
|
|
node.position += Vec2::new(0.1 * time.delta_seconds, 0.0);
|
|
}
|
|
}
|
|
|
|
fn setup(command_buffer: &mut CommandBuffer, mut materials: ResMut<Assets<ColorMaterial>>) {
|
|
let mut builder = command_buffer.build();
|
|
builder.add_entity(Camera2dEntity::default());
|
|
|
|
let mut prev = Vec2::default();
|
|
let count = 1000;
|
|
for i in 0..count {
|
|
// 2d camera
|
|
let cur = Vec2::new(1.0, 1.0) * 1.0 + prev;
|
|
builder.add_entity(UiEntity {
|
|
node: Node::new(
|
|
math::vec2(75.0, 75.0) + cur,
|
|
Anchors::new(0.5, 0.5, 0.5, 0.5),
|
|
Margins::new(0.0, 100.0, 0.0, 100.0),
|
|
),
|
|
material: materials.add(Color::rgb(0.0 + i as f32 / count as f32, 0.1, 0.1).into()),
|
|
..Default::default()
|
|
});
|
|
|
|
prev = cur;
|
|
}
|
|
}
|