add block info and modify permission checking to use it

src/level.rs

@@ -1,3 +1,4 @@
+pub mod block;
 pub mod generation;
 
 /// a classic level

src/level/block.rs

@@ -0,0 +1,156 @@
+use std::{collections::BTreeMap, sync::LazyLock};
+
+use crate::player::PlayerType;
+
+/// information about all blocks implemented
+pub static BLOCK_INFO: LazyLock<BTreeMap<u8, BlockInfo>> = LazyLock::new(|| {
+	[
+		(0x00, BlockInfo::new("air").block_type(BlockType::NonSolid)),
+		(0x01, BlockInfo::new("stone")),
+		(0x02, BlockInfo::new("grass")),
+		(0x03, BlockInfo::new("dirt")),
+		(0x04, BlockInfo::new("cobblestone")),
+		(0x05, BlockInfo::new("planks")),
+		(
+			0x06,
+			BlockInfo::new("sapling").block_type(BlockType::NonSolid),
+		),
+		(
+			0x07,
+			BlockInfo::new("bedrock").perm(PlayerType::Operator, PlayerType::Operator),
+		),
+		(
+			0x08,
+			BlockInfo::new("water_flowing")
+				.block_type(BlockType::FluidFlowing { stationary: 0x09 })
+				.perm(PlayerType::Operator, PlayerType::Normal),
+		),
+		(
+			0x09,
+			BlockInfo::new("water_stationary")
+				.block_type(BlockType::FluidStationary { moving: 0x08 })
+				.perm(PlayerType::Operator, PlayerType::Normal),
+		),
+		(
+			0x0a,
+			BlockInfo::new("lava_flowing")
+				.block_type(BlockType::FluidFlowing { stationary: 0x0b })
+				.perm(PlayerType::Operator, PlayerType::Normal),
+		),
+		(
+			0x0b,
+			BlockInfo::new("lava_stationary")
+				.block_type(BlockType::FluidStationary { moving: 0x0a })
+				.perm(PlayerType::Operator, PlayerType::Normal),
+		),
+		(0x0c, BlockInfo::new("sand")),
+		(0x0d, BlockInfo::new("gravel")),
+		(0x0e, BlockInfo::new("gold_ore")),
+		(0x0f, BlockInfo::new("iron_ore")),
+		(0x10, BlockInfo::new("coal_ore")),
+		(0x11, BlockInfo::new("wood")),
+		(0x12, BlockInfo::new("leaves")),
+		(0x13, BlockInfo::new("sponge")),
+		(0x14, BlockInfo::new("glass")),
+		(0x15, BlockInfo::new("cloth_red")),
+		(0x16, BlockInfo::new("cloth_orange")),
+		(0x17, BlockInfo::new("cloth_yellow")),
+		(0x18, BlockInfo::new("cloth_chartreuse")),
+		(0x19, BlockInfo::new("cloth_green")),
+		(0x1a, BlockInfo::new("cloth_spring_green")),
+		(0x1b, BlockInfo::new("cloth_cyan")),
+		(0x1c, BlockInfo::new("cloth_capri")),
+		(0x1d, BlockInfo::new("cloth_ultramarine")),
+		(0x1e, BlockInfo::new("cloth_violet")),
+		(0x1f, BlockInfo::new("cloth_purple")),
+		(0x20, BlockInfo::new("cloth_magenta")),
+		(0x21, BlockInfo::new("cloth_rose")),
+		(0x22, BlockInfo::new("cloth_dark_gray")),
+		(0x23, BlockInfo::new("cloth_light_gray")),
+		(0x24, BlockInfo::new("cloth_white")),
+		(
+			0x25,
+			BlockInfo::new("flower").block_type(BlockType::NonSolid),
+		),
+		(0x26, BlockInfo::new("rose").block_type(BlockType::NonSolid)),
+		(
+			0x27,
+			BlockInfo::new("brown_mushroom").block_type(BlockType::NonSolid),
+		),
+		(
+			0x28,
+			BlockInfo::new("red_mushroom").block_type(BlockType::NonSolid),
+		),
+		(0x29, BlockInfo::new("gold_block")),
+		(0x2a, BlockInfo::new("iron_block")),
+		(0x2b, BlockInfo::new("double_slab")),
+		(0x2c, BlockInfo::new("slab").block_type(BlockType::Slab)),
+		(0x2d, BlockInfo::new("bricks")),
+		(0x2e, BlockInfo::new("tnt")),
+		(0x2f, BlockInfo::new("bookshelf")),
+		(0x30, BlockInfo::new("mossy_cobblestone")),
+		(0x31, BlockInfo::new("obsidian")),
+	]
+	.into()
+});
+
+/// map of block string ids to their byte ids
+pub static BLOCK_STRING_ID_MAP: LazyLock<BTreeMap<&'static str, u8>> = LazyLock::new(|| {
+	BLOCK_INFO
+		.iter()
+		.map(|(id, info)| (info.str_id, *id))
+		.collect()
+});
+
+/// information about a block type
+#[derive(Debug)]
+pub struct BlockInfo {
+	/// the block's string id
+	pub str_id: &'static str,
+	/// the type of block
+	pub block_type: BlockType,
+	/// permissions needed to place this block
+	pub place_permissions: PlayerType,
+	/// permissions needed to break this block (includes replacing fluids)
+	pub break_permissions: PlayerType,
+}
+
+impl BlockInfo {
+	/// creates a new block info
+	pub const fn new(str_id: &'static str) -> Self {
+		Self {
+			str_id,
+			block_type: BlockType::Solid,
+			place_permissions: PlayerType::Normal,
+			break_permissions: PlayerType::Normal,
+		}
+	}
+
+	/// sets the info's block type
+	pub const fn block_type(mut self, block_type: BlockType) -> Self {
+		self.block_type = block_type;
+		self
+	}
+
+	/// sets placement and breaking permissions for the info
+	pub const fn perm(mut self, place: PlayerType, brk: PlayerType) -> Self {
+		self.place_permissions = place;
+		self.break_permissions = brk;
+		self
+	}
+}
+
+/// types of blocks
+#[derive(Debug)]
+pub enum BlockType {
+	/// a regular solid block
+	Solid,
+	/// a block which has no collision
+	NonSolid,
+	/// a slab
+	Slab,
+	/// fluid which is actively flowing
+	FluidFlowing { stationary: u8 },
+	/// fluid which is stationary
+	FluidStationary { moving: u8 },
+}

src/main.rs

@@ -1,3 +1,5 @@
+#![feature(lazy_cell)]
+
 use std::path::PathBuf;
 
 use server::{config::ServerConfig, Server};

src/player.rs

@@ -31,7 +31,7 @@ pub struct Player {
 }
 
 /// enum describing types of players
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
 #[repr(u8)]
 pub enum PlayerType {
 	/// a normal player

src/server/network.rs

@@ -9,7 +9,7 @@ use tokio::{
 };
 
 use crate::{
-	level::Level,
+	level::{block::BLOCK_INFO, Level},
 	packet::{
 		client::ClientPacket, server::ServerPacket, PacketReader, PacketWriter, ARRAY_LENGTH,
 	},
@@ -226,19 +226,41 @@ async fn handle_stream_inner(
 								} => {
 									let block_type = if mode == 0x00 { 0 } else { block_type };
 									let mut data = data.write().await;
+									let new_block_info = BLOCK_INFO.get(&block_type);
+									let mut cancel = new_block_info.is_none();
 									let block =
 										data.level.get_block(x as usize, y as usize, z as usize);
-									// check if bedrock
+									let block_info = BLOCK_INFO
-									// TODO: genericize this
+										.get(&block)
-									if (block == 0x07 || block_type == 0x07)
+										.expect("missing block information for block!");
-										&& data
+
+									// check if player has ability to place/break these blocks
+									if let Some(new_block_info) = new_block_info {
+										let player_type = data
 											.players
 											.iter()
 											.find_map(|p| {
 												(p.id == *own_id).then_some(p.player_type)
 											})
-											.unwrap_or_default() != PlayerType::Operator
+											.unwrap_or_default();
-									{
+										if player_type < new_block_info.place_permissions {
+											cancel = true;
+											reply_queue.push_back(ServerPacket::Message {
+												player_id: -1,
+												message: "Not allowed to place this block."
+													.to_string(),
+											});
+										} else if player_type < block_info.break_permissions {
+											cancel = true;
+											reply_queue.push_back(ServerPacket::Message {
+												player_id: -1,
+												message: "Not allowed to break this block."
+													.to_string(),
+											});
+										}
+									}
+
+									if cancel {
 										reply_queue.push_back(ServerPacket::SetBlock {
 											x,
 											y,