more test

LICENSE-APACHE

@@ -0,0 +1,176 @@
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+
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+END OF TERMS AND CONDITIONS

LICENSE-MIT

@@ -0,0 +1,23 @@
+Permission is hereby granted, free of charge, to any
+person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the
+Software without restriction, including without
+limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software
+is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice
+shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
+ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.

README.md

@@ -1,4 +1,9 @@
-This respository uses git lfs for large file storage.  You will need to run `git lfs pull` after cloning.
+How to clone this repository:
+```
+git clone https://git.itzana.me/StrafesNET/roblox-bot-player
+cd roblox-bot-player
+git lfs pull
+```
 
 How to build the wasm module:
 ```
@@ -18,3 +23,22 @@ cd native-player
 cargo run --release -- ../web-demo/bhop_marble_5692093612.snfm ../web-demo/bhop_marble_7cf33a64-7120-4514-b9fa-4fe29d9523d.qbot
 ```
 You can drag and drop map files and bot files to load them.
+
+#### License
+
+This code depends on a proprietary module, [strafesnet_graphics](https://git.itzana.me/StrafesNET/strafe-project/src/branch/master/engine/graphics).  The resulting binary is
+not redistributable without the express permission of Rhys Lloyd.  The code in this repository
+is MIT & Apache 2.0 dual licensed, and is free to use.
+
+<sup>
+Licensed under either of <a href="LICENSE-APACHE">Apache License, Version
+2.0</a> or <a href="LICENSE-MIT">MIT license</a> at your option.
+</sup>
+
+<br>
+
+<sub>
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in this crate by you, as defined in the Apache-2.0 license, shall
+be dual licensed as above, without any additional terms or conditions.
+</sub>

lib/src/head.rs

@@ -50,20 +50,29 @@ impl PlaybackHead{
 	pub fn set_paused(&mut self,time:SessionTime,paused:bool){
 		_=self.timer.set_paused(time,paused);
 	}
-	pub fn seek_backward(&mut self,time:SessionTime){
+	pub fn seek_to(&mut self,time:SessionTime,new_time:PhysicsTime){
+		self.timer.set_time(time,new_time);
+		self.loop_offset=PhysicsTime::ZERO;
+		// reset head
+		self.head=HEAD_NO_CRASH;
+	}
+	pub fn seek_backward(&mut self,time_offset:SessionTime){
 		let (mut state,paused)=self.timer.clone().into_state();
-		let offset=state.get_offset()-time.coerce();
+		let offset=state.get_time(-time_offset).coerce();
 		state.set_offset(offset);
 		self.timer=Timer::from_state(state,paused);
 		// reset head
 		self.head=HEAD_NO_CRASH;
 	}
-	pub fn seek_forward(&mut self,time:SessionTime){
+	pub fn seek_forward(&mut self,time_offset:SessionTime){
 		let (mut state,paused)=self.timer.clone().into_state();
-		let offset=state.get_offset()+time.coerce();
+		let offset=state.get_time(time_offset).coerce();
 		state.set_offset(offset);
 		self.timer=Timer::from_state(state,paused);
 	}
+	pub fn set_scale(&mut self,time:SessionTime,new_scale:strafesnet_common::integer::Ratio64){
+		self.timer.set_scale(time,new_scale);
+	}
 	pub fn advance_time(&mut self,bot:&CompleteBot,time:SessionTime){
 		let mut simulation_time=self.time(bot,time);
 		let mut time_float=simulation_time.get() as f64/PhysicsTime::ONE_SECOND.get() as f64;

native-player/Cargo.toml

@@ -4,12 +4,12 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
+glam = "0.31.0"
 pollster = "0.4.0"
-strafesnet_roblox_bot_player = { version = "0.1.0", path = "../lib" }
 wgpu = "28.0.0"
 winit = "0.30.12"
+strafesnet_roblox_bot_player = { version = "0.1.0", path = "../lib" }
 strafesnet_common.workspace = true
 strafesnet_graphics.workspace = true
 strafesnet_roblox_bot_file.workspace = true
 strafesnet_snf.workspace = true
-glam = "0.31.0"

native-player/src/player.rs

@@ -1,9 +1,11 @@
 use strafesnet_common::instruction::TimedInstruction;
 use strafesnet_common::session::Time as SessionTime;
+use strafesnet_common::physics::Time as PhysicsTime;
 use strafesnet_roblox_bot_player::{bot::CompleteBot,graphics::Graphics,head::PlaybackHead};
 
 pub enum SessionControlInstruction{
 	SetPaused(bool),
+	Restart,
 	SkipForward,
 	SkipBack,
 	DecreaseTimescale,
@@ -18,11 +20,20 @@ pub enum Instruction{
 	LoadReplay(strafesnet_roblox_bot_file::v0::Block),
 }
 
+fn speed_ratio(speed:i8)->strafesnet_common::integer::Ratio64{
+	if speed.is_negative(){
+		strafesnet_common::integer::Ratio64::new(4i64.pow(-speed as u32),5u64.pow(-speed as u32)).unwrap()
+	}else{
+		strafesnet_common::integer::Ratio64::new(5i64.pow(speed as u32),4u64.pow(speed as u32)).unwrap()
+	}
+}
+
 pub struct PlayerWorker<'a>{
 	surface:wgpu::Surface<'a>,
 	graphics_thread:Graphics,
 	bot:Option<CompleteBot>,
 	playback_head:PlaybackHead,
+	playback_speed:i8,
 }
 impl<'a> PlayerWorker<'a>{
 	pub fn new(
@@ -35,6 +46,7 @@ impl<'a> PlayerWorker<'a>{
 			graphics_thread,
 			bot:None,
 			playback_head,
+			playback_speed:0,
 		}
 	}
 	pub fn send(&mut self,ins:TimedInstruction<Instruction,SessionTime>){
@@ -42,13 +54,23 @@ impl<'a> PlayerWorker<'a>{
 			Instruction::SessionControl(SessionControlInstruction::SetPaused(paused))=>{
 				self.playback_head.set_paused(ins.time,paused);
 			},
+			Instruction::SessionControl(SessionControlInstruction::Restart)=>{
+				self.playback_head.seek_to(ins.time,PhysicsTime::ZERO);
+			},
 			Instruction::SessionControl(SessionControlInstruction::SkipForward)=>{
-				self.playback_head.seek_forward(SessionTime::from_secs(5));
+				self.playback_head.seek_forward(SessionTime::from_secs(2));
 			},
 			Instruction::SessionControl(SessionControlInstruction::SkipBack)=>{
-				self.playback_head.seek_backward(SessionTime::from_secs(5));
+				self.playback_head.seek_backward(SessionTime::from_secs(2));
+			},
+			Instruction::SessionControl(SessionControlInstruction::DecreaseTimescale)=>{
+				self.playback_speed=self.playback_speed.saturating_sub(1).max(-27);
+				self.playback_head.set_scale(ins.time,speed_ratio(self.playback_speed));
+			},
+			Instruction::SessionControl(SessionControlInstruction::IncreaseTimescale)=>{
+				self.playback_speed=self.playback_speed.saturating_add(1).min(27);
+				self.playback_head.set_scale(ins.time,speed_ratio(self.playback_speed));
 			},
-			Instruction::SessionControl(session_control_instruction)=>{},
 			Instruction::Render=>if let Some(bot)=&self.bot{
 				self.playback_head.advance_time(bot,ins.time);
 				let (pos,angles)=self.playback_head.get_position_angles(bot,ins.time);

native-player/src/window.rs

@@ -1,6 +1,5 @@
 use strafesnet_common::instruction::TimedInstruction;
 use strafesnet_common::session::Time as SessionTime;
-use strafesnet_common::physics::{MiscInstruction,SetControlInstruction};
 use crate::file::LoadFormat;
 use crate::player::{PlayerWorker,Instruction as PhysicsWorkerInstruction,SessionControlInstruction};
 
@@ -12,7 +11,6 @@ pub enum Instruction{
 //holds thread handles to dispatch to
 pub struct WindowContext<'a>{
 	simulation_paused:bool,
-	screen_size:glam::UVec2,
 	window:&'a winit::window::Window,
 	physics_thread:PlayerWorker<'a>,
 }
@@ -70,6 +68,10 @@ impl WindowContext<'_>{
 							winit::keyboard::Key::Named(winit::keyboard::NamedKey::ArrowDown)=>session_ctrl!(DecreaseTimescale,s),
 							winit::keyboard::Key::Named(winit::keyboard::NamedKey::ArrowLeft)=>session_ctrl!(SkipBack,s),
 							winit::keyboard::Key::Named(winit::keyboard::NamedKey::ArrowRight)=>session_ctrl!(SkipForward,s),
+							winit::keyboard::Key::Character(key)=>match key.as_str(){
+								"R"|"r"=>session_ctrl!(Restart,s),
+								_=>None,
+							},
 							_=>None,
 						}{
 							self.physics_thread.send(TimedInstruction{
@@ -101,7 +103,7 @@ impl WindowContext<'_>{
 		}
 	}
 
-	fn device_event(&mut self,time:SessionTime,event:winit::event::DeviceEvent){
+	fn device_event(&mut self,_time:SessionTime,_event:winit::event::DeviceEvent){
 	}
 
 	pub fn send(&mut self,ins:TimedInstruction<Instruction,SessionTime>){
@@ -122,12 +124,9 @@ impl WindowContext<'_>{
 		surface:wgpu::Surface<'a>,
 		config:wgpu::SurfaceConfiguration,
 	)->WindowContext<'a>{
-		let screen_size=glam::uvec2(config.width,config.height);
 		let graphics=strafesnet_roblox_bot_player::graphics::Graphics::new(device,queue,config);
 		WindowContext{
 			simulation_paused:false,
-			//make sure to update this!!!!!
-			screen_size,
 			window,
 			physics_thread:crate::player::PlayerWorker::new(
 				surface,

wasm-module/src/lib.rs

@@ -5,6 +5,8 @@ use strafesnet_roblox_bot_player::{bot,head,time,graphics};
 use strafesnet_graphics::setup;
 use strafesnet_common::physics::Time as PhysicsTime;
 
+mod ratio;
+
 // Hack to keep the code compiling,
 // SurfaceTarget::Canvas is not available in IDE for whatever reason.
 struct ToSurfaceTarget(web_sys::HtmlCanvasElement);
@@ -135,4 +137,31 @@ impl PlaybackHead{
 		let mode=v0::ModeID(mode_id);
 		Some(self.head.state().get_run(mode)?.is_finished())
 	}
+	#[wasm_bindgen]
+	pub fn set_paused(&mut self,time:f64,paused:bool){
+		let time=time::from_float(time).unwrap();
+		self.head.set_paused(time,paused);
+	}
+	#[wasm_bindgen]
+	pub fn set_scale(&mut self,time:f64,scale:f64){
+		let time=time::from_float(time).unwrap();
+		let scale=crate::ratio::ratio_from_float(scale).unwrap();
+		self.head.set_scale(time,scale);
+	}
+	#[wasm_bindgen]
+	pub fn seek_to(&mut self,time:f64,new_time:f64){
+		let time=time::from_float(time).unwrap();
+		let new_time=time::from_float(new_time).unwrap();
+		self.head.seek_to(time,new_time);
+	}
+	#[wasm_bindgen]
+	pub fn seek_forward(&mut self,time_offset:f64){
+		let time_offset=time::from_float(time_offset).unwrap();
+		self.head.seek_forward(time_offset);
+	}
+	#[wasm_bindgen]
+	pub fn seek_backward(&mut self,time_offset:f64){
+		let time_offset=time::from_float(time_offset).unwrap();
+		self.head.seek_backward(time_offset);
+	}
 }

wasm-module/src/ratio.rs

@@ -0,0 +1,130 @@
+use strafesnet_common::integer::Ratio64;
+
+#[derive(Debug)]
+pub enum RatioFromFloatError{
+	Nan,
+	Overflow,
+	Underflow,
+}
+
+fn f64_into_parts(f: f64) -> (u64, i16, i8) {
+	let bits: u64 = f.to_bits();
+	let sign: i8 = if bits >> 63 == 0 { 1 } else { -1 };
+	let mut exponent: i16 = ((bits >> 52) & 0x7ff) as i16;
+	let mantissa = if exponent == 0 {
+		(bits & 0xfffffffffffff) << 1
+	} else {
+		(bits & 0xfffffffffffff) | 0x10000000000000
+	};
+	// Exponent bias + mantissa shift
+	exponent -= 1023 + 52;
+	(mantissa, exponent, sign)
+}
+
+pub fn ratio_from_float(value:f64)->Result<Ratio64,RatioFromFloatError>{
+	// Handle special values first
+	match value.classify(){
+		core::num::FpCategory::Nan=>return Err(RatioFromFloatError::Nan),
+		core::num::FpCategory::Zero=>return Ok(Ratio64::ZERO),
+		core::num::FpCategory::Subnormal
+		|core::num::FpCategory::Normal
+		|core::num::FpCategory::Infinite=>{
+			if value<i64::MIN as f64{
+				return Err(RatioFromFloatError::Underflow);
+			}
+			if (i64::MAX as f64)<value{
+				return Err(RatioFromFloatError::Overflow);
+			}
+		}
+	}
+
+	// value = sign * mantissa * 2 ^ exponent
+	let (mantissa,exponent,sign)=f64_into_parts(value);
+
+	if 0<=exponent{
+		// we know value < i64::MIN, so it must just be an integer.
+		return Ok(Ratio64::new((sign as i64*mantissa as i64)<<exponent,1).unwrap());
+	}
+
+	if exponent< -62-52{
+		// very small number is not representable
+		return Ok(Ratio64::ZERO);
+	}
+
+	if -63<exponent{
+		// exactly representable
+		return Ok(Ratio64::new(sign as i64*mantissa as i64,1<<-exponent).unwrap());
+	}
+
+	// the denominator is necessarily bigger than the numerator at this point.
+
+	// create exact float num/den ratio
+	let mut in_num=mantissa as u128;
+	let mut in_den=1u128<<-exponent;
+
+	// a+b*c
+	fn ma(a:i64,b:i64,c:i64)->Option<i64>{
+		a.checked_add(b.checked_mul(c)?)
+	}
+
+	let mut p_prev=1i64;
+	let mut q_prev=0i64;
+	let mut p_cur=0i64;
+	let mut q_cur=1i64;
+
+	// compute continued fraction
+	loop{
+		let whole=in_den/in_num;
+
+		if whole==0{
+			// we have depleted the input fraction and created an exact representation
+			break;
+		}
+
+		if (i64::MAX as u128)<whole{
+			// cannot continue fraction
+			break;
+		}
+
+		let Some(p_next)=ma(p_prev,p_cur,whole as i64)else{
+			// overflow
+			break;
+		};
+		let Some(q_next)=ma(q_prev,q_cur,whole as i64)else{
+			// overflow
+			break;
+		};
+
+		p_prev=p_cur;
+		q_prev=q_cur;
+		p_cur=p_next;
+		q_cur=q_next;
+		(in_num,in_den)=(in_den-in_num*whole,in_num);
+	}
+
+	Ok(Ratio64::new(p_cur,q_cur as u64).unwrap())
+}
+
+#[cfg(test)]
+fn req(r0:Ratio64,r1:Ratio64){
+	println!("r0={r0:?} r1={r1:?}");
+	assert_eq!(r0.num(),r1.num(),"Nums not eq");
+	assert_eq!(r0.den(),r1.den(),"Dens not eq");
+}
+
+#[test]
+fn test(){
+	req(ratio_from_float(2.0).unwrap(),Ratio64::new(2,1).unwrap());
+	req(ratio_from_float(1.0).unwrap(),Ratio64::new(1,1).unwrap());
+	req(ratio_from_float(0.5).unwrap(),Ratio64::new(1,2).unwrap());
+	req(ratio_from_float(1.1).unwrap(),Ratio64::new(2476979795053773,2251799813685248).unwrap());
+	req(ratio_from_float(0.8).unwrap(),Ratio64::new(3602879701896397,4503599627370496).unwrap());
+	req(ratio_from_float(0.61).unwrap(),Ratio64::new(5494391545392005,9007199254740992).unwrap());
+	req(ratio_from_float(0.01).unwrap(),Ratio64::new(5764607523034235,576460752303423488).unwrap());
+	req(ratio_from_float(0.001).unwrap(),Ratio64::new(1152921504606847,1152921504606846976).unwrap());
+	req(ratio_from_float(0.00001).unwrap(),Ratio64::new(89605456633725,8960545663372499267).unwrap());
+	req(ratio_from_float(0.00000000001).unwrap(),Ratio64::new(35204848,3520484800000000213).unwrap());
+	req(ratio_from_float(0.000000000000000001).unwrap(),Ratio64::new(2,1999999999999999857).unwrap());
+	req(ratio_from_float(2222222222222.0).unwrap(),Ratio64::new(2222222222222,1).unwrap());
+	req(ratio_from_float(core::f64::consts::PI).unwrap(),Ratio64::new(884279719003555,281474976710656).unwrap());
+}

web-demo/index.html

@@ -40,6 +40,15 @@
 				font-size: 14px;
 				border-radius: 3px;
 			}
+
+			.controls {
+				position: fixed;
+				bottom: 10px;
+				left: 120px;
+				display: flex;
+				flex-direction: row; /* stack horizontally */
+				gap: 4px; /* space between timers */
+			}
 		</style>
 		<script defer src="player.js" type="module"></script>
 		<script defer type="module" src="iframe-helper.js"></script>
@@ -47,8 +56,17 @@
 	<body>
 		<canvas id="viewport"> </canvas>
 		<div class="hud">
-			<div id="duration" class="timer">00:00:00</div>
-			<div id="timer" class="timer">00:00:00</div>
+			<div id="hud_duration" class="timer">00:00:00</div>
+			<div id="hud_timer" class="timer">00:00:00</div>
+		</div>
+		<div class="controls">
+			<button id="control_reset">↪️</button>
+			<button id="control_pause">⏯</button>
+			<button id="control_backward">⬅️</button>
+			<button id="control_forward">➡️</button>
+			<button id="control_slower">⏪</button>
+			<input type="text" id="control_speed" value="1.00x"></>
+			<button id="control_faster">⏩</button>
 		</div>
 	</body>
 </html>

web-demo/player.js

@@ -5,6 +5,7 @@ import init, {
 	PlaybackHead,
 } from "./pkg/strafesnet_roblox_bot_player_wasm_module.js";
 
+// Loading
 await init(); // load the wasm module
 
 const b = await fetch("bhop_marble_7cf33a64-7120-4514-b9fa-4fe29d9523d.qbot");
@@ -19,9 +20,9 @@ const playback = new PlaybackHead(0);
 
 graphics.change_map(map);
 
-const startTime = performance.now();
-const timer = document.getElementById("timer");
-const duration = document.getElementById("duration");
+// HUD
+const hud_timer = document.getElementById("hud_timer");
+const hud_duration = document.getElementById("hud_duration");
 const MODE_MAIN = 0;
 
 function timer_text(t) {
@@ -32,8 +33,60 @@ function timer_text(t) {
 	return `${String(h).padStart(2, "0")}:${String(m).padStart(2, "0")}:${String(s).padStart(2, "0")}.${String(ms).padStart(3, "0")}`;
 }
 
-duration.textContent = timer_text(bot.run_duration(MODE_MAIN));
+hud_duration.textContent = timer_text(bot.run_duration(MODE_MAIN));
 
+// Stuff
+const startTime = document.timeline.currentTime;
+function elapsed() {
+	return (document.timeline.currentTime - startTime) / 1000;
+}
+
+const control_speed = document.getElementById("control_speed");
+
+var paused = false;
+var scale = 1;
+function set_scale(new_scale) {
+	scale = new_scale;
+	playback.set_scale(elapsed(), scale);
+	control_speed.value = `${scale.toPrecision(3)}x`;
+}
+
+// Controls
+document.getElementById("control_reset").addEventListener("click", (e) => {
+	playback.seek_to(elapsed(), 0.0);
+});
+document.getElementById("control_pause").addEventListener("click", (e) => {
+	paused = !paused;
+	playback.set_paused(elapsed(), paused);
+});
+document.getElementById("control_forward").addEventListener("click", (e) => {
+	playback.seek_forward(2.0);
+});
+document.getElementById("control_backward").addEventListener("click", (e) => {
+	playback.seek_backward(2.0);
+});
+document.getElementById("control_slower").addEventListener("click", (e) => {
+	set_scale((scale * 4) / 5);
+});
+const regex = new RegExp("^([^x]*)x?$");
+control_speed.addEventListener("change", (e) => {
+	const parsed = regex.exec(e.target.value);
+	if (!parsed) {
+		set_scale(1);
+		return;
+	}
+	const input = Number(parsed.at(1));
+	if (Number.isNaN(input)) {
+		set_scale(1);
+		return;
+	}
+	set_scale(input);
+});
+document.getElementById("control_faster").addEventListener("click", (e) => {
+	set_scale((scale * 5) / 4);
+});
+
+// Rendering
 function animate(now) {
 	const elapsedMs = now - startTime;
 	const elapsedSec = elapsedMs / 1000; // wasm expects seconds
@@ -43,7 +96,7 @@ function animate(now) {
 
 	// update the timer text
 	const time = playback.get_run_time(bot, elapsedSec, MODE_MAIN);
-	timer.textContent = timer_text(time);
+	hud_timer.textContent = timer_text(time);
 
 	// Render the frame that the bot is at that time
 	graphics.render(bot, playback, elapsedSec);
@@ -54,6 +107,7 @@ function animate(now) {
 
 requestAnimationFrame(animate);
 
+// Resizing
 function resize() {
 	canvas.width = canvas.clientWidth;
 	canvas.height = canvas.clientHeight;