RBXScriptSignal

.cargo/config.toml

@@ -0,0 +1,2 @@
+[registries.strafesnet]
+index = "sparse+https://git.itzana.me/api/packages/strafesnet/cargo/"

Cargo.lock

@@ -402,7 +402,7 @@ dependencies = [
 
 [[package]]
 name = "roblox_emulator"
-version = "0.4.5"
+version = "0.4.6"
 dependencies = [
  "glam",
  "mlua",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "roblox_emulator"
-version = "0.4.5"
+version = "0.4.6"
 edition = "2021"
 repository = "https://git.itzana.me/StrafesNET/roblox_emulator"
 license = "MIT OR Apache-2.0"

src/runner/instance.rs

@@ -369,12 +369,13 @@ static CLASS_FUNCTION_DATABASE:CFD=phf::phf_map!{
 		"GetService"=>cf!(|lua,_this,service:mlua::String|{
 			dom_mut(lua,|dom|{
 				//dom.root_ref()==this.referent ?
-				match &*service.to_str()?{
-					"Lighting"=>{
-						let referent=find_first_child_of_class(dom,dom.root(),"Lighting")
+				let service=&*service.to_str()?;
+				match service{
+					"Lighting"|"RunService"=>{
+						let referent=find_first_child_of_class(dom,dom.root(),service)
         				.map(|instance|instance.referent())
 						.unwrap_or_else(||
-							dom.insert(dom.root_ref(),InstanceBuilder::new("Lighting"))
+							dom.insert(dom.root_ref(),InstanceBuilder::new(service))
 						);
 						Ok(Instance::new(referent))
 					},

src/runner/mod.rs

@@ -7,7 +7,8 @@ mod color3;
 mod cframe;
 mod vector3;
 pub mod instance;
-mod number_sequence;
+mod script_signal;
 mod color_sequence;
+mod number_sequence;
 
-pub use runner::{Runner,Error};
+pub use runner::{Runner,Runnable,Error};

src/runner/script_signal.rs

@@ -0,0 +1,72 @@
+use std::{cell::RefCell,rc::Rc};
+
+#[derive(Clone)]
+pub struct ScriptSignal{
+	// Emulate the garbage roblox api.
+	// ScriptConnection should not exist.
+	// :Disconnect should be a method on ScriptSignal, and this would be avoided entirely.
+	callbacks:Rc<RefCell<Vec<mlua::Function>>>,
+}
+pub struct ScriptConnection{
+	signal:ScriptSignal,
+	function:mlua::Function,
+}
+impl ScriptSignal{
+	pub fn new()->Self{
+		Self{
+			callbacks:Rc::new(RefCell::new(Vec::new())),
+		}
+	}
+	// This eats the Lua error
+	pub fn fire(&self,args:mlua::MultiValue){
+		// Make a copy of the list in case Lua attempts to modify it during the loop
+		let allocate_twice=self.callbacks.borrow().clone();
+		for function in allocate_twice{
+			//wee let's allocate for our function calls
+			if let Err(e)=function.call::<mlua::MultiValue>(args.clone()){
+				println!("Script Signal Error: {e}");
+			}
+		}
+	}
+	pub fn connect(&self,function:mlua::Function)->ScriptConnection{
+		self.callbacks.borrow_mut().push(function.clone());
+		ScriptConnection{
+			signal:self.clone(),
+			function,
+		}
+	}
+}
+impl ScriptConnection{
+	pub fn position(&self)->Option<usize>{
+		self.signal.callbacks.borrow().iter().position(|function|function==&self.function)
+	}
+}
+
+impl mlua::UserData for ScriptSignal{
+	fn add_methods<M:mlua::UserDataMethods<Self>>(methods:&mut M){
+		methods.add_method("Connect",|_lua,this,f:mlua::Function|
+			Ok(this.connect(f))
+		);
+		// Fire is not allowed to be called from Lua
+		// methods.add_method("Fire",|_lua,this,args:mlua::MultiValue|
+		// 	Ok(this.fire(args))
+		// );
+	}
+}
+//type_from_lua_userdata!(ScriptSignal);
+
+impl mlua::UserData for ScriptConnection{
+	fn add_fields<F:mlua::UserDataFields<Self>>(fields:&mut F){
+		fields.add_field_method_get("Connected",|_,this|{
+			Ok(this.position().is_some())
+		});
+	}
+	fn add_methods<M:mlua::UserDataMethods<Self>>(methods:&mut M){
+		methods.add_method("Disconnect",|_,this,_:()|{
+			if let Some(index)=this.position(){
+				this.signal.callbacks.borrow_mut().remove(index);
+			}
+			Ok(())
+		});
+	}
+}

src/scheduler.rs

@@ -57,27 +57,34 @@ impl Scheduler{
 	}
 }
 
-fn coerce_float64(value:&mlua::Value)->Option<f64>{
-	match value{
-		&mlua::Value::Integer(i)=>Some(i as f64),
-		&mlua::Value::Number(f)=>Some(f),
-		_=>None,
-	}
-}
 pub fn scheduler_mut<T>(lua:&mlua::Lua,mut f:impl FnMut(&mut crate::scheduler::Scheduler)->mlua::Result<T>)->mlua::Result<T>{
 	let mut scheduler=lua.app_data_mut::<crate::scheduler::Scheduler>().ok_or(mlua::Error::runtime("Scheduler missing"))?;
 	f(&mut *scheduler)
 }
 pub fn set_globals(lua:&mlua::Lua,globals:&mlua::Table)->Result<(),mlua::Error>{
-	let schedule_thread=lua.create_function(move|lua,dt:mlua::Value|{
-		let delay=coerce_float64(&dt).ok_or(mlua::Error::runtime("Expected float"))?.max(0.0)*60.0;
-		if delay<u64::MAX as f64{
-			scheduler_mut(lua,|scheduler|{
-				scheduler.schedule_thread((delay as u64).max(2),lua.current_thread());
-				Ok(())
-			}).unwrap();
+	let schedule_thread=lua.create_function(|lua,dt:mlua::Value|{
+		let delay=match dt{
+			mlua::Value::Integer(i)=>i.max(0) as u64*60,
+			mlua::Value::Number(f)=>{
+				let delay=f.max(0.0)*60.0;
+				match delay.classify(){
+					std::num::FpCategory::Nan=>Err(mlua::Error::runtime("NaN"))?,
+					// cases where the number is too large to schedule
+					std::num::FpCategory::Infinite=>return Ok(()),
+					std::num::FpCategory::Normal=>if (u64::MAX as f64)<delay{
+						return Ok(());
+					},
+					_=>(),
 				}
+				delay as u64
+			},
+			mlua::Value::Nil=>0,
+			_=>Err(mlua::Error::runtime("Expected float"))?,
+		};
+		scheduler_mut(lua,|scheduler|{
+			scheduler.schedule_thread(delay.max(2),lua.current_thread());
 			Ok(())
+		})
 	})?;
 	let wait_env=lua.create_table()?;
 	wait_env.raw_set("coroutine",globals.get::<mlua::Table>("coroutine")?)?;