问题描述
https://github.com/mthelm85/game
在 assets/textures
中,我有一个名为 pitch.png
的文件,我想将其用作窗口的背景。我找不到有关如何执行此操作的任何信息。
谢谢!
解决方法
您不需要设置 z-translation
。 Bevy 将在顶部呈现最后添加的项目。因此,如果您想将图像用作背景,只需像这样先生成相应的精灵:
fn setup(
commands: &mut Commands,asset_server: Res<AssetServer>,mut materials: ResMut<Assets<ColorMaterial>>,) {
let background_image: Handle<Texture> = asset_server.load("textures/pitch.png");
let texture_handle = asset_server.load("sprites/sprite_max.png");
commands
.spawn(Camera2dBundle::default())
.spawn(SpriteBundle {
material: materials.add(background_image.into()),..Default::default()
})
.spawn(SpriteBundle {
material: materials.add(texture_handle.into()),..Default::default()
})
.with(Max);
}
如果您希望图像最初覆盖整个屏幕,则必须相应地对其进行缩放,例如:
use bevy::prelude::*;
fn main() {
App::build()
.add_resource(WindowDescriptor {
title: "Game".to_string(),width: 900.0,height: 900.0,vsync: true,resizable: false,..Default::default()
})
.add_system(move_max.system())
.add_plugins(DefaultPlugins)
.add_startup_system(setup.system())
.run();
}
fn setup(
commands: &mut Commands,transform: Transform::from_scale(Vec3::new(1.5,1.5,0.0)),..Default::default()
})
.with(Max);
}
struct Max;
fn move_max(
keyboard_input: Res<Input<KeyCode>>,mut max_positions: Query<&mut Transform,With<Max>>,) {
for mut transform in max_positions.iter_mut() {
if keyboard_input.pressed(KeyCode::Left) {
transform.translation.x -= 1.0;
}
if keyboard_input.pressed(KeyCode::Right) {
transform.translation.x += 1.0;
}
if keyboard_input.pressed(KeyCode::Down) {
transform.translation.y -= 1.0;
}
if keyboard_input.pressed(KeyCode::Up) {
transform.translation.y += 1.0;
}
}
}