Initial commit

.gitignore

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+/target

Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "snf"
+version = "0.1.0"

Cargo.toml

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+[package]
+name = "snf"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

src/bot.rs

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+pub enum Error{
+	
+}
+
+/* block types
+
+BLOCK_BOT_HEADER:
+u128 map_resource_uuid //which map is this bot running
+u128 time_resource_uuid //resource database time
+//don't include style info in bot header because it's in the simulation state
+//blocks are laid out in chronological order, but indices may jump around.
+u64 num_segments
+for _ in 0..num_segments{
+	i64 time //simulation_state timestamp
+	u64 block_id
+}
+
+BLOCK_BOT_SEGMENT:
+//format version indicates what version of these structures to use
+SimulationState simulation_state //SimulationState is just under ClientState which includes Play/Pause events that the simulation doesn't know about.
+//to read, greedily decode instructions until eof
+loop{
+	//delta encode as much as possible (time,mousepos)
+	//strafe ticks are implied
+	//physics can be implied in an input-only bot file
+	TimedInstruction<SimulationInstruction> instruction
+}
+
+*/
+
+pub struct Bot{
+	//
+}

src/demo.rs

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+pub enum Error{
+	
+}
+
+/*
+BLOCK_DEMO_HEADER:
+//timeline of loading maps, bots
+*/
+
+pub struct Demo{
+	map:Box<crate::map::Map>,
+	bots:Vec<crate::bot::Bot>,
+}

src/file.rs

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+//file format "sniff"
+
+pub enum Error{
+	Header(HeaderError),
+	Map(crate::map::Error),
+	Bot(crate::bot::Error),
+	Demo(crate::demo::Error),
+}
+
+pub enum MissingData{
+	NeedExactly(usize),//missing exactly this many bytes
+	NeedAtLeast(usize),//missing at least this many bytes
+}
+
+pub enum HeaderError{
+	InvalidMagic,
+	InvalidVersion,
+	UnexpectedEOF{
+		eof:usize,
+		missing_data:MissingData,
+	},//file ends in the middle of the header
+}
+
+/* spec
+
+//begin global header
+
+//global metadata (32 bytes)
+b"SNFB"
+u32 format_version
+u64 priming_bytes
+	//how many bytes of the file must be read to guarantee all of the expected
+	//format-specific metadata is available to facilitate streaming the remaining contents
+	//used by the database to guarantee that it serves at least the bare minimum
+u128 resource_uuid
+	//identifies the file from anywhere for any other file
+
+//global block layout (variable size)
+u64 num_blocks
+for block_id in 0..num_blocks{
+	u64 first_byte
+}
+
+//end global header
+
+//begin blocks
+
+//each block is compressed with zstd or gz or something
+
+*/
+
+pub enum Magic{
+	Map,	//"SNFM"
+	Bot,	//"SNFB"
+	Demo,	//"SNFD"
+	PlaylistDemo,
+}
+
+pub struct Header{
+	/// Type of file
+	magic:Magic,
+	/// Type version
+	version:u32,
+	/// Minimum data required to know the location of all streamable resources for this specific file
+	priming:u64,
+	/// uuid for this file
+	resource:u128,
+}
+
+pub struct BlockLayout{
+	count:u64,
+	location:Vec<u64>,
+}
+
+pub enum SNF{
+	Map(crate::map::Map),
+	Bot(crate::bot::Bot),
+	Demo(crate::demo::Demo),
+}

src/lib.rs

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+use std::io::Read;
+
+mod file;
+mod map;
+mod bot;
+mod demo;
+
+pub fn read<R:Read>(input:R)->Result<crate::file::SNF,crate::file::Error>{
+	Err(file::Error::Header(file::HeaderError::InvalidMagic))
+}
+
+#[cfg(test)]
+mod tests {
+	//use super::*;
+
+	#[test]
+	fn test() {
+	}
+}

src/map.rs

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+pub enum Error{
+	
+}
+
+/* block types
+
+BLOCK_MAP_HEADER:
+DefaultStyleInfo style_info
+//bvh goes here
+u64 num_nodes
+//node 0 parent node is implied to be None
+for node_id in 1..num_nodes{
+	u64 parent_node
+}
+u64 num_spacial_blocks
+for spacial_block_id in 0..num_spacial_blocks{
+	u64 node_id
+	u64 block_id //data block
+	Aabb block_extents
+}
+//ideally spacial blocks are sorted from distance to start zone
+//texture blocks are inserted before the first spacial block they are used in
+
+BLOCK_MAP_RESOURCE:
+//an individual one of the following:
+	- model (IndexedModel)
+	- shader (compiled SPIR-V)
+	- image (JpegXL)
+	- sound (Opus)
+	- video (AV1)
+	- animation (Trey thing)
+
+BLOCK_MAP_OBJECT:
+//an individual one of the following:
+	- model instance
+	- located resource
+//for a list of resources, parse the object.
+//alternatively, BLOCK_MAP_REGION lists a group of objects to be decoded all at once
+
+*/
+
+pub struct Map{
+	//
+}