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use std::sync::Arc;
use anyhow::Result;
use async_trait::async_trait;
use mcproto_rs::nbt::Tag;
use mcproto_rs::Serializer;
use mcproto_rs::types::{BytesSerializer, NamedNbtTag};
use mcproto_rs::v1_19_3::{BitSet, BlobArray, ChunkDataAndUpdateLightSpec, ChunkDataSpec, ChunkSection, LightDataSpec, Packet761, PalettedContainer};
use crate::convention::Universe;
use crate::nbt;
use crate::player::Player;
#[async_trait]
pub trait World {
async fn send_chunk(&self, observer: &Player, chunk_x: i32, chunk_z: i32) -> Result<()>;
}
pub struct DebugWorld {
universe: Arc<Universe>,
}
impl DebugWorld {
pub fn new(universe: Arc<Universe>) -> DebugWorld {
DebugWorld { universe }
}
}
#[async_trait]
impl World for DebugWorld {
async fn send_chunk(&self, observer: &Player, chunk_x: i32, chunk_z: i32) -> Result<()> {
let mut heightmap = BlobArray::new(9);
for cx in 0..(16 * 16) {
heightmap.set_entry(cx, 2)
}
let mut chunk_dat_serializer = BytesSerializer::default();
for i in 0..(self.universe.max_world_section - self.universe.min_world_section) {
let section = ChunkSection {
block_count: if i < 4 { 16 * 16 * 16 } else { 0 },
block_state: PalettedContainer { singular_value: if i < 4 { 1.into() } else { 0.into() } },
biomes: PalettedContainer { singular_value: 0.into() },
};
chunk_dat_serializer.serialize_other(§ion)?;
}
let chunk_column_bytes = chunk_dat_serializer.into_bytes();
observer.send_packet(Packet761::ChunkDataAndUpdateLight(ChunkDataAndUpdateLightSpec {
chunk_x,
chunk_z,
chunk_data: ChunkDataSpec {
heightmaps: NamedNbtTag {
root: nbt! {
"MOTION_BLOCKING" :: (Tag::LongArray(heightmap.data.iter().map(|n| n.to_owned() as _).collect())),
"WORLD_SURFACE" :: (Tag::LongArray(heightmap.data.iter().map(|n| n.to_owned() as _).collect())),
}.with_name("root")
},
buffer: chunk_column_bytes.into(),
block_entities: vec![].into(),
},
light_data: LightDataSpec {
trust_edges: true,
sky_y_mask: BitSet::empty(),
block_y_mask: BitSet::empty(),
empty_sky_y_mask: BitSet::empty(),
empty_block_y_mask: BitSet::empty(),
sky_updates: vec![].into(),
block_updates: vec![].into(),
},
}))?;
Ok(())
}
}
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