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iso_diamond.rs
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iso_diamond.rs
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use bevy::prelude::*;
use bevy_ecs_tilemap::prelude::*;
use rand::{thread_rng, Rng};
mod helpers;
fn startup(mut commands: Commands, asset_server: Res<AssetServer>, mut map_query: MapQuery) {
commands.spawn_bundle(OrthographicCameraBundle::new_2d());
let texture_handle = asset_server.load("iso_color.png");
// Create map entity and component:
let map_entity = commands.spawn().id();
let mut map = Map::new(0u16, map_entity);
let mut map_settings = LayerSettings::new(
MapSize(2, 2),
ChunkSize(32, 32),
TileSize(64.0, 32.0),
TextureSize(384.0, 32.0),
);
map_settings.mesh_type = TilemapMeshType::Isometric(IsoType::Diamond);
// Layer 0
let (mut layer_0, layer_0_entity) =
LayerBuilder::<TileBundle>::new(&mut commands, map_settings.clone(), 0u16, 0u16);
map.add_layer(&mut commands, 0u16, layer_0_entity);
layer_0.fill(
TilePos(0, 0),
TilePos(32, 32),
Tile {
texture_index: 0,
..Default::default()
}
.into(),
);
layer_0.fill(
TilePos(32, 0),
TilePos(64, 32),
Tile {
texture_index: 1,
..Default::default()
}
.into(),
);
layer_0.fill(
TilePos(0, 32),
TilePos(32, 64),
Tile {
texture_index: 2,
..Default::default()
}
.into(),
);
layer_0.fill(
TilePos(32, 32),
TilePos(64, 64),
Tile {
texture_index: 3,
..Default::default()
}
.into(),
);
map_query.build_layer(&mut commands, layer_0, texture_handle.clone());
// Make 2 layers on "top" of the base map.
for z in 0..5 {
let mut new_settings = map_settings.clone();
new_settings.layer_id = z + 1;
let (mut layer_builder, layer_entity) = LayerBuilder::new(
&mut commands,
new_settings.clone(),
0u16,
new_settings.layer_id,
);
map.add_layer(&mut commands, new_settings.layer_id, layer_entity);
let mut random = thread_rng();
for _ in 0..1000 {
let position = TilePos(random.gen_range(0..128), random.gen_range(0..128));
// Ignore errors for demo sake.
let _ = layer_builder.set_tile(
position,
TileBundle {
tile: Tile {
texture_index: 0 + z + 1,
..Default::default()
},
..Default::default()
},
);
}
map_query.build_layer(&mut commands, layer_builder, texture_handle.clone());
}
// Spawn Map
// Required in order to use map_query to retrieve layers/tiles.
commands
.entity(map_entity)
.insert(map)
.insert(Transform::from_xyz(0.0, 1024.0, 0.0))
.insert(GlobalTransform::default());
}
fn main() {
App::new()
.insert_resource(WindowDescriptor {
width: 1270.0,
height: 720.0,
title: String::from("Iso diamond Map"),
..Default::default()
})
.add_plugins(DefaultPlugins)
.add_plugin(TilemapPlugin)
.add_startup_system(startup)
.add_system(helpers::camera::movement)
.add_system(helpers::texture::set_texture_filters_to_nearest)
.run();
}