106 lines
3.1 KiB
Rust
106 lines
3.1 KiB
Rust
// Copyright 2022 ModZero.
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// SPDX-License-Identifier: AGPL-3.0-or-later
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use bevy::{
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diagnostic::{FrameTimeDiagnosticsPlugin, LogDiagnosticsPlugin},
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input::mouse::MouseMotion,
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prelude::*,
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render::texture::ImageSettings,
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};
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use bevy_ecs_tilemap::prelude::*;
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use rand::{thread_rng, Rng};
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mod defs;
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fn make_ground_layer(
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commands: &mut Commands,
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tilemap_size: TilemapSize,
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texture_handle: Handle<Image>,
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tile_size: TilemapTileSize,
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) {
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let mut tile_storage = TileStorage::empty(tilemap_size);
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let tilemap_entity = commands.spawn().id();
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let mut random = thread_rng();
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for x in 0..tilemap_size.x {
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for y in 0..tilemap_size.y {
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let tile_pos = TilePos { x, y };
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let tile_entity = commands
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.spawn()
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.insert_bundle(TileBundle {
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position: tile_pos,
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tilemap_id: TilemapId(tilemap_entity),
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texture: TileTexture(random.gen_range(13..=19)),
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..Default::default()
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})
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.id();
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tile_storage.set(&tile_pos, Some(tile_entity));
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}
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}
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commands
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.entity(tilemap_entity)
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.insert_bundle(TilemapBundle {
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grid_size: tile_size.into(),
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size: tilemap_size,
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storage: tile_storage.clone(),
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texture: TilemapTexture(texture_handle),
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tile_size,
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transform: bevy_ecs_tilemap::helpers::get_centered_transform_2d(
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&tilemap_size,
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&tile_size,
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0.0,
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),
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..Default::default()
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});
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}
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fn startup(mut commands: Commands, asset_server: Res<AssetServer>) {
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commands.spawn_bundle(Camera2dBundle::default());
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let texture_handle = asset_server.load("tileset.png");
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let tilemap_size = TilemapSize { x: 320, y: 320 };
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let tile_size = TilemapTileSize { x: 32.0, y: 32.0 };
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make_ground_layer(
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&mut commands,
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tilemap_size,
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texture_handle,
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tile_size,
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);
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}
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fn mouse_motion(
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mut motion_evr: EventReader<MouseMotion>,
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buttons: Res<Input<MouseButton>>,
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mut query: Query<(&mut Transform, &mut OrthographicProjection), With<Camera>>,
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) {
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if buttons.pressed(MouseButton::Middle) {
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for ev in motion_evr.iter() {
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for (mut transform, mut _ortho) in query.iter_mut() {
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let direction = Vec3::new(ev.delta.x, ev.delta.y * -1.0, 0.0);
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transform.translation += direction;
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}
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}
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}
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}
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fn main() {
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App::new()
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.insert_resource(WindowDescriptor {
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width: 1270.0,
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height: 720.0,
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title: String::from("Monstrous"),
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..Default::default()
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})
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.insert_resource(ImageSettings::default_nearest())
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.add_plugins(DefaultPlugins)
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.add_plugin(LogDiagnosticsPlugin::default())
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.add_plugin(FrameTimeDiagnosticsPlugin::default())
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.add_plugin(TilemapPlugin)
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.add_startup_system(startup)
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.add_system(mouse_motion)
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.run();
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}
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