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level.rs
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206 lines (181 loc) · 5.79 KB
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//! Implements level.dat file loading.
use std::collections::HashMap;
use std::io::{Read, Write};
use serde::Deserialize;
use feather_items::Item;
use crate::Biome;
/// Root level tag
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct Root {
#[serde(rename = "Data")]
pub data: LevelData,
}
/// Represents the contents of a level file.
#[derive(Default, Debug, Clone, Serialize, Deserialize)]
pub struct LevelData {
#[serde(rename = "allowCommands")]
pub allow_commands: bool,
#[serde(default)]
#[serde(rename = "BorderCenterX")]
pub border_center_x: f64,
#[serde(default)]
#[serde(rename = "BorderCenterZ")]
pub border_center_z: f64,
#[serde(default)]
#[serde(rename = "BorderDamagePerBlock")]
pub border_damage_per_block: f64,
#[serde(rename = "BorderSafeZone")]
pub border_safe_zone: f64,
#[serde(rename = "BorderSize")]
pub border_size: f64,
#[serde(rename = "clearWeatherTime")]
pub clear_weather_time: i32,
#[serde(rename = "DataVersion")]
pub data_version: i32,
#[serde(rename = "DayTime")]
pub day_time: i64,
#[serde(rename = "Difficulty")]
pub difficulty: i8,
#[serde(rename = "DifficultyLocked")]
pub difficulty_locked: i8,
#[serde(rename = "GameType")]
pub game_type: i32,
pub hardcore: bool,
pub initialized: bool,
#[serde(rename = "LastPlayed")]
pub last_played: i64,
pub raining: bool,
#[serde(rename = "rainTime")]
pub rain_time: i32,
#[serde(rename = "RandomSeed")]
pub seed: i64,
#[serde(rename = "SpawnX")]
pub spawn_x: i32,
#[serde(rename = "SpawnY")]
pub spawn_y: i32,
#[serde(rename = "SpawnZ")]
pub spawn_z: i32,
pub thundering: bool,
#[serde(rename = "thunderTime")]
pub thunder_time: i32,
#[serde(rename = "Time")]
pub time: i64,
#[serde(rename = "Version")]
pub version: LevelVersion,
#[serde(rename = "generatorName")]
pub generator_name: String,
#[serde(rename = "generatorOptions")]
pub generator_options: Option<SuperflatGeneratorOptions>,
}
/// Represents level version data.
#[derive(Default, Debug, Clone, Serialize, Deserialize)]
pub struct LevelVersion {
#[serde(rename = "Id")]
id: i32,
#[serde(rename = "Name")]
name: String,
}
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SuperflatGeneratorOptions {
pub structures: HashMap<String, nbt::Value>,
pub layers: Vec<SuperflatLayer>,
pub biome: String,
}
impl Default for SuperflatGeneratorOptions {
fn default() -> Self {
let mut default_structures = HashMap::new();
default_structures.insert(
String::from("village"),
nbt::Value::Compound(HashMap::new()),
);
// Default superflat world layers
Self {
structures: default_structures,
layers: vec![
SuperflatLayer {
block: Item::Bedrock.identifier().to_string(),
height: 1,
},
SuperflatLayer {
block: Item::Dirt.identifier().to_string(),
height: 2,
},
SuperflatLayer {
block: Item::GrassBlock.identifier().to_string(),
height: 1,
},
],
biome: Biome::Plains.identifier().to_string(),
}
}
}
#[derive(Default, Debug, Clone, Serialize, Deserialize)]
pub struct SuperflatLayer {
pub block: String, // TODO: Use "Block" enum and implement (de)serialization
pub height: u8,
}
/// The type of world generator for a level.
#[derive(Debug, PartialEq)]
pub enum LevelGeneratorType {
Default,
Flat,
LargeBiomes,
Amplified,
Buffet,
Debug,
}
impl LevelData {
pub fn generator_type(&self) -> LevelGeneratorType {
match self.generator_name.to_lowercase().as_str() {
"default" => LevelGeneratorType::Default,
"flat" => LevelGeneratorType::Flat,
"largeBiomes" => LevelGeneratorType::LargeBiomes,
"amplified" => LevelGeneratorType::Amplified,
"buffet" => LevelGeneratorType::Buffet,
"debug_all_block_states" => LevelGeneratorType::Debug,
_ => LevelGeneratorType::Default,
}
}
}
/// Deserializes a level.dat file from the given reader.
pub fn deserialize_level_file<R: Read>(reader: R) -> Result<LevelData, nbt::Error> {
match nbt::from_gzip_reader::<_, Root>(reader) {
Ok(root) => Ok(root.data),
Err(e) => Err(e),
}
}
pub fn save_level_file<W: Write>(level: &Root, writer: &mut W) -> Result<(), nbt::Error> {
match nbt::to_gzip_writer::<_, Root>(writer, level, None) {
Ok(_) => Ok(()),
Err(e) => Err(e),
}
}
#[cfg(test)]
mod tests {
use super::*;
use std::io::Cursor;
#[test]
fn test_deserialize_level_file() {
let cursor = Cursor::new(include_bytes!("level.dat").to_vec());
let level = deserialize_level_file(cursor).unwrap();
assert!(!level.allow_commands);
assert_eq!(level.clear_weather_time, 0);
assert_eq!(level.data_version, 1631);
assert_eq!(level.day_time, 302_885);
assert_eq!(level.difficulty, 1);
assert_eq!(level.difficulty_locked, 0);
assert_eq!(level.game_type, 0);
assert!(!level.hardcore);
assert!(level.initialized);
assert_eq!(level.last_played, 1_560_968_104_655);
assert_eq!(level.raining, false);
assert_eq!(level.rain_time, 61872);
assert_eq!(level.spawn_x, 0);
assert_eq!(level.spawn_y, 70);
assert_eq!(level.spawn_z, 0);
assert!(level.thundering);
assert_eq!(level.thunder_time, 5252);
assert_eq!(level.generator_name, "default");
assert!(level.generator_options.is_none());
}
}