save level on stop (loading soon)

Cargo.lock

@@ -56,6 +56,25 @@ dependencies = [
  "rustc-demangle",
 ]
 
+[[package]]
+name = "bincode"
+version = "2.0.0-rc.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f11ea1a0346b94ef188834a65c068a03aec181c94896d481d7a0a40d85b0ce95"
+dependencies = [
+ "bincode_derive",
+ "serde",
+]
+
+[[package]]
+name = "bincode_derive"
+version = "2.0.0-rc.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7e30759b3b99a1b802a7a3aa21c85c3ded5c28e1c83170d82d70f08bbf7f3e4c"
+dependencies = [
+ "virtue",
+]
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -84,6 +103,7 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 name = "classics"
 version = "0.1.0"
 dependencies = [
+ "bincode",
  "bytes",
  "flate2",
  "half",
@@ -535,6 +555,12 @@ version = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
 
+[[package]]
+name = "virtue"
+version = "0.0.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9dcc60c0624df774c82a0ef104151231d37da4962957d691c011c852b2473314"
+
 [[package]]
 name = "wasi"
 version = "0.11.0+wasi-snapshot-preview1"

Cargo.toml

@@ -4,6 +4,7 @@ name = "classics"
 version = "0.1.0"
 
 [dependencies]
+bincode = "2.0.0-rc.3"
 bytes = "1"
 flate2 = "1"
 half = "2"

src/level.rs

@@ -1,5 +1,7 @@
 use std::collections::BTreeSet;
 
+use bincode::{Decode, Encode};
+
 use crate::{packet::server::ServerPacket, util::neighbors};
 
 use self::block::BLOCK_INFO;
@@ -8,7 +10,7 @@ pub mod block;
 pub mod generation;
 
 /// a classic level
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, Encode, Decode)]
 pub struct Level {
 	/// the size of the level in the X direction
 	pub x_size: usize,
@@ -91,7 +93,7 @@ impl Level {
 }
 
 /// struct describing a block update for the level to handle
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, Encode, Decode)]
 pub struct BlockUpdate {
 	/// the index of the block to be updated
 	pub index: usize,

src/server.rs

@@ -94,12 +94,20 @@ impl Server {
 				});
 			}
 		});
-		handle_ticks(self.data).await;
+		handle_ticks(self.data.clone()).await;
 		tokio::time::sleep(std::time::Duration::from_millis(1)).await;
 
 		// TODO: cancel pending tasks/send out "Server is stopping" messages *here* instead of elsewhere
 		// rn the message isn't guaranteed to actually go out........
 
+		let data = self.data.read().await;
+		let mut encoder = flate2::write::GzEncoder::new(Vec::new(), flate2::Compression::best());
+		bincode::encode_into_std_write(&data.level, &mut encoder, bincode::config::standard())
+			.unwrap();
+		tokio::fs::write("level.clw", encoder.finish().unwrap())
+			.await
+			.unwrap();
+
 		Ok(())
 	}
 }