bevy-parallax

A parallax plugin for the Bevy Engine. This plugin allows you to easily create scrolling parallax backgrounds for your games.

cyberpunk

fishy

Usage

```rust use bevy::prelude::*; use bevy_parallax::{ LayerSpeed, LayerData, ParallaxCameraComponent, ParallaxMoveEvent, ParallaxPlugin, ParallaxResource, ParallaxSystems };

fn main() { let primarywindow = Window { title: "Window Name".tostring(), resolution: (1280.0, 720.0).into(), resizable: false, ..Default::default() };

App::new()
    .insert_resource(ParallaxResource {
        layer_data: vec![
            LayerData {
                speed: LayerSpeed::Horizontal(0.9),
                path: "back.png".to_string(),
                tile_size: Vec2::new(96.0, 160.0),
                cols: 1,
                rows: 1,
                scale: 4.5,
                z: 0.0,
                ..Default::default()
            },
            LayerData {
                speed: LayerSpeed::Horizontal(0.6),
                path: "middle.png".to_string(),
                tile_size: Vec2::new(144.0, 160.0),
                cols: 1,
                rows: 1,
                scale: 4.5,
                z: 1.0,
                ..Default::default()
            },
            LayerData {
                speed: LayerSpeed::Horizontal(0.1),
                path: "front.png".to_string(),
                tile_size: Vec2::new(272.0, 160.0),
                cols: 1,
                rows: 1,
                scale: 4.5,
                z: 2.0,
                ..Default::default()
            },
        ],
        ..Default::default()
    })
    .add_plugins(
        DefaultPlugins
            .set(WindowPlugin {
                primary_window: Some(primary_window),
                ..default()
            })
            // Use nearest filtering so our pixel art renders clear
            .set(ImagePlugin::default_nearest()),
    )
    .add_plugin(ParallaxPlugin)
    .add_startup_system(initialize_camera_system)
    .add_system(move_camera_system.before(ParallaxSystems))
    .run();

}

pub fn initializecamerasystem(mut commands: Commands) { commands .spawn_bundle(Camera2dBundle::default()) .insert(ParallaxCameraComponent); }

pub fn movecamerasystem( keyboardinput: Res>, mut moveeventwriter: EventWriter, ) { if keyboardinput.pressed(KeyCode::D) || keyboardinput.pressed(KeyCode::Right) { moveeventwriter.send(ParallaxMoveEvent { cameramovespeed: Vec2::new(3.0, 0.0), }); } else if keyboardinput.pressed(KeyCode::A) || keyboardinput.pressed(KeyCode::Left) { moveeventwriter.send(ParallaxMoveEvent { cameramove_speed: Vec2::new(-3.0, 0.0), }); } } ```

Credits