v0.4.7 RBXScriptSignal + RunService

.cargo/config.toml

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

Cargo.lock

@@ -32,6 +32,12 @@ version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
+[[package]]
+name = "bitflags"
+version = "2.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b048fb63fd8b5923fc5aa7b340d8e156aec7ec02f0c78fa8a6ddc2613f6f71de"
+
 [[package]]
 name = "blake3"
 version = "1.5.4"
@@ -121,6 +127,16 @@ dependencies = [
  "windows-targets",
 ]
 
+[[package]]
+name = "lock_api"
+version = "0.4.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "07af8b9cdd281b7915f413fa73f29ebd5d55d0d3f0155584dade1ff18cea1b17"
+dependencies = [
+ "autocfg",
+ "scopeguard",
+]
+
 [[package]]
 name = "luau0-src"
 version = "0.10.3+luau640"
@@ -138,15 +154,15 @@ checksum = "78ca9ab1a0babb1e7d5695e3530886289c18cf2f87ec19a575a0abdce112e3a3"
 
 [[package]]
 name = "mlua"
-version = "0.9.9"
+version = "0.10.0-beta.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d111deb18a9c9bd33e1541309f4742523bfab01d276bfa9a27519f6de9c11dc7"
+checksum = "200dd4c8e5f81416d43a023b9921c3cbf01d828094b23a90b26826c3840ba4f3"
 dependencies = [
  "bstr",
  "libloading",
  "mlua-sys",
  "num-traits",
- "once_cell",
+ "parking_lot",
  "rustc-hash",
 ]
 
@@ -172,10 +188,27 @@ dependencies = [
 ]
 
 [[package]]
-name = "once_cell"
+name = "parking_lot"
-version = "1.19.0"
+version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
+checksum = "f1bf18183cf54e8d6059647fc3063646a1801cf30896933ec2311622cc4b9a27"
+dependencies = [
+ "lock_api",
+ "parking_lot_core",
+]
+
+[[package]]
+name = "parking_lot_core"
+version = "0.9.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e401f977ab385c9e4e3ab30627d6f26d00e2c73eef317493c4ec6d468726cf8"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "redox_syscall",
+ "smallvec",
+ "windows-targets",
+]
 
 [[package]]
 name = "paste"
@@ -328,7 +361,7 @@ source = "sparse+https://git.itzana.me/api/packages/strafesnet/cargo/"
 checksum = "d7a390c44034fa448c53bd0983dfc2d70d8d6b2f65be4f164d4bec8b6a2a2d09"
 dependencies = [
  "base64",
- "bitflags",
+ "bitflags 1.3.2",
  "blake3",
  "lazy_static",
  "rand",
@@ -336,6 +369,15 @@ dependencies = [
  "thiserror",
 ]
 
+[[package]]
+name = "redox_syscall"
+version = "0.5.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9b6dfecf2c74bce2466cabf93f6664d6998a69eb21e39f4207930065b27b771f"
+dependencies = [
+ "bitflags 2.6.0",
+]
+
 [[package]]
 name = "rmp"
 version = "0.8.14"
@@ -360,7 +402,7 @@ dependencies = [
 
 [[package]]
 name = "roblox_emulator"
-version = "0.4.1"
+version = "0.4.7"
 dependencies = [
  "glam",
  "mlua",
@@ -377,6 +419,12 @@ version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "583034fd73374156e66797ed8e5b0d5690409c9226b22d87cb7f19821c05d152"
 
+[[package]]
+name = "scopeguard"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
+
 [[package]]
 name = "serde"
 version = "1.0.210"
@@ -409,6 +457,12 @@ version = "0.3.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "38b58827f4464d87d377d175e90bf58eb00fd8716ff0a62f80356b5e61555d0d"
 
+[[package]]
+name = "smallvec"
+version = "1.13.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c5e1a9a646d36c3599cd173a41282daf47c44583ad367b8e6837255952e5c67"
+
 [[package]]
 name = "syn"
 version = "2.0.77"

Cargo.toml

@@ -1,15 +1,19 @@
 [package]
 name = "roblox_emulator"
-version = "0.4.1"
+version = "0.4.7"
 edition = "2021"
 repository = "https://git.itzana.me/StrafesNET/roblox_emulator"
 license = "MIT OR Apache-2.0"
 description = "Run embedded Luau scripts which manipulate the DOM."
 authors = ["Rhys Lloyd <krakow20@gmail.com>"]
 
+[features]
+default=["run-service"]
+run-service=[]
+
 [dependencies]
 glam = "0.29.0"
-mlua = { version = "0.9.9", features = ["luau"] }
+mlua = { version = "0.10.0-beta", features = ["luau"] }
 phf = { version = "0.11.2", features = ["macros"] }
 rbx_dom_weak = { version = "2.7.0", registry = "strafesnet" }
 rbx_reflection = { version = "4.7.0", registry = "strafesnet" }

src/context.rs

@@ -60,10 +60,19 @@ impl Context{
 
 		//insert services
 		let game=self.dom.root_ref();
+		let terrain_bldr=InstanceBuilder::new("Terrain");
 		let workspace=self.dom.insert(game,
 			InstanceBuilder::new("Workspace")
-			.with_child(InstanceBuilder::new("Terrain"))
+				//Set Workspace.Terrain property equal to Terrain
+				.with_property("Terrain",terrain_bldr.referent())
+				.with_child(terrain_bldr)
 		);
+		{
+			//Lowercase and upper case workspace property!
+			let game=self.dom.root_mut();
+			game.properties.insert("workspace".to_owned(),rbx_types::Variant::Ref(workspace));
+			game.properties.insert("Workspace".to_owned(),rbx_types::Variant::Ref(workspace));
+		}
 		self.dom.insert(game,InstanceBuilder::new("Lighting"));
 
 		//transfer original root instances into workspace

src/lib.rs

@@ -1,5 +1,7 @@
 pub mod runner;
 pub mod context;
+#[cfg(feature="run-service")]
+pub(crate) mod scheduler;
 
 #[cfg(test)]
 mod tests;

src/runner/cframe.rs

@@ -59,7 +59,7 @@ impl From<rbx_types::CFrame> for CFrame{
 	}
 }
 
-pub fn set_globals(lua:&mlua::Lua,globals:&mlua::Table<'_>)->Result<(),mlua::Error>{
+pub fn set_globals(lua:&mlua::Lua,globals:&mlua::Table)->Result<(),mlua::Error>{
 	let cframe_table=lua.create_table()?;
 
 	//CFrame.new
@@ -126,12 +126,12 @@ pub fn set_globals(lua:&mlua::Lua,globals:&mlua::Table<'_>)->Result<(),mlua::Err
 }
 
 impl mlua::UserData for CFrame{
-	fn add_fields<'lua,F:mlua::UserDataFields<'lua,Self>>(fields:&mut F){
+	fn add_fields<F:mlua::UserDataFields<Self>>(fields:&mut F){
 		//CFrame.p
 		fields.add_field_method_get("p",|_,this|Ok(Vector3(this.0.translation)));
 	}
 
-	fn add_methods<'lua,M:mlua::UserDataMethods<'lua,Self>>(methods:&mut M){
+	fn add_methods<M:mlua::UserDataMethods<Self>>(methods:&mut M){
 		methods.add_method("components",|_,this,()|Ok((
 			this.0.translation.x,
 			this.0.translation.y,

src/runner/color3.rs

@@ -15,7 +15,7 @@ impl Into<rbx_types::Color3> for Color3{
 	}
 }
 
-pub fn set_globals(lua:&mlua::Lua,globals:&mlua::Table<'_>)->Result<(),mlua::Error>{
+pub fn set_globals(lua:&mlua::Lua,globals:&mlua::Table)->Result<(),mlua::Error>{
 	let color3_table=lua.create_table()?;
 
 	color3_table.raw_set("new",
@@ -38,7 +38,7 @@ fn lerp(lhs:f32,rhs:f32,t:f32)->f32{
 }
 
 impl mlua::UserData for Color3{
-	fn add_fields<'lua,F:mlua::UserDataFields<'lua,Self>>(fields:&mut F){
+	fn add_fields<F:mlua::UserDataFields<Self>>(fields:&mut F){
 		fields.add_field_method_get("r",|_,this|Ok(this.r));
 		fields.add_field_method_set("r",|_,this,val|{
 			this.r=val;
@@ -55,7 +55,7 @@ impl mlua::UserData for Color3{
 			Ok(())
 		});
 	}
-	fn add_methods<'lua,M:mlua::UserDataMethods<'lua,Self>>(methods:&mut M){
+	fn add_methods<M:mlua::UserDataMethods<Self>>(methods:&mut M){
 		methods.add_method("Lerp",|_,this,(other,t):(Self,f32)|
 			Ok(Color3::new(
 				lerp(this.r,other.r,t),

src/runner/color_sequence.rs

@@ -0,0 +1,31 @@
+#[derive(Clone,Copy)]
+pub struct ColorSequence{}
+impl ColorSequence{
+	pub const fn new()->Self{
+		Self{}
+	}
+}
+impl Into<rbx_types::ColorSequence> for ColorSequence{
+	fn into(self)->rbx_types::ColorSequence{
+		rbx_types::ColorSequence{
+			keypoints:Vec::new()
+		}
+	}
+}
+
+pub fn set_globals(lua:&mlua::Lua,globals:&mlua::Table)->Result<(),mlua::Error>{
+	let number_sequence_table=lua.create_table()?;
+
+	number_sequence_table.raw_set("new",
+		lua.create_function(|_,_:mlua::MultiValue|
+			Ok(ColorSequence::new())
+		)?
+	)?;
+
+	globals.set("ColorSequence",number_sequence_table)?;
+
+	Ok(())
+}
+
+impl mlua::UserData for ColorSequence{}
+type_from_lua_userdata!(ColorSequence);

src/runner/enum.rs

@@ -2,7 +2,9 @@ use mlua::IntoLua;
 
 #[derive(Clone,Copy)]
 pub struct Enum(u32);
+#[derive(Clone,Copy)]
 pub struct EnumItems;
+#[derive(Clone,Copy)]
 pub struct EnumItem<'a>{
 	ed:&'a rbx_reflection::EnumDescriptor<'a>,
 }
@@ -19,16 +21,16 @@ impl<'a> EnumItem<'a>{
 	}
 }
 
-pub fn set_globals(_lua:&mlua::Lua,globals:&mlua::Table<'_>)->Result<(),mlua::Error>{
+pub fn set_globals(_lua:&mlua::Lua,globals:&mlua::Table)->Result<(),mlua::Error>{
 	globals.set("Enum",EnumItems)
 }
 
 impl mlua::UserData for EnumItem<'_>{
-	fn add_fields<'lua,F:mlua::UserDataFields<'lua,Self>>(_fields:&mut F){
+	fn add_fields<F:mlua::UserDataFields<Self>>(_fields:&mut F){
 	}
-	fn add_methods<'lua,M:mlua::UserDataMethods<'lua,Self>>(methods:&mut M){
+	fn add_methods<M:mlua::UserDataMethods<Self>>(methods:&mut M){
-		methods.add_meta_function(mlua::MetaMethod::Index,|lua,(this,val):(EnumItem<'lua>,mlua::String)|{
+		methods.add_meta_function(mlua::MetaMethod::Index,|lua,(this,val):(EnumItem<'_>,mlua::String)|{
-			match this.ed.items.get(val.to_str()?){
+			match this.ed.items.get(&*val.to_str()?){
 				Some(&id)=>Enum(id).into_lua(lua),
 				None=>mlua::Value::Nil.into_lua(lua),
 			}
@@ -38,12 +40,12 @@ impl mlua::UserData for EnumItem<'_>{
 type_from_lua_userdata_lua_lifetime!(EnumItem);
 
 impl mlua::UserData for EnumItems{
-	fn add_fields<'lua,F:mlua::UserDataFields<'lua,Self>>(_fields:&mut F){
+	fn add_fields<F:mlua::UserDataFields<Self>>(_fields:&mut F){
 	}
-	fn add_methods<'lua,M:mlua::UserDataMethods<'lua,Self>>(methods:&mut M){
+	fn add_methods<M:mlua::UserDataMethods<Self>>(methods:&mut M){
 		methods.add_meta_function(mlua::MetaMethod::Index,|lua,(_,val):(Self,mlua::String)|{
 			let db=rbx_reflection_database::get();
-			match db.enums.get(val.to_str()?){
+			match db.enums.get(&*val.to_str()?){
 				Some(ed)=>EnumItem::new(ed).into_lua(lua),
 				None=>mlua::Value::Nil.into_lua(lua),
 			}
@@ -53,9 +55,9 @@ impl mlua::UserData for EnumItems{
 type_from_lua_userdata!(EnumItems);
 
 impl mlua::UserData for Enum{
-	fn add_fields<'lua,F:mlua::UserDataFields<'lua,Self>>(_fields:&mut F){
+	fn add_fields<F:mlua::UserDataFields<Self>>(_fields:&mut F){
 	}
-	fn add_methods<'lua,M:mlua::UserDataMethods<'lua,Self>>(_methods:&mut M){
+	fn add_methods<M:mlua::UserDataMethods<Self>>(_methods:&mut M){
 	}
 }
 type_from_lua_userdata!(Enum);

src/runner/instance.rs

@@ -1,369 +0,0 @@
-use std::collections::{hash_map::Entry,HashMap};
-
-use mlua::{IntoLua,IntoLuaMulti};
-use rbx_types::Ref;
-use rbx_dom_weak::{InstanceBuilder,WeakDom};
-
-use super::vector3::Vector3;
-
-/// A store of created functions for each Roblox class.
-/// Functions are created the first time they are accessed and stored in this data structure.
-#[derive(Default)]
-struct ClassFunctions<'a>{
-	classes:HashMap<&'static str,//ClassName
-		HashMap<&'static str,//Function name
-			mlua::Function<'a>
-		>
-	>
-}
-
-fn place_id<'lua>(lua:&'lua mlua::Lua,tuple:mlua::MultiValue<'lua>)->mlua::Result<mlua::MultiValue<'lua>>{
-	0.into_lua_multi(lua)
-}
-type FPointer=for<'lua> fn(&'lua mlua::Lua,mlua::MultiValue<'lua>)->mlua::Result<mlua::MultiValue<'lua>>;
-static CLASS_FUNCTION_DATABASE:phf::Map<&str,phf::Map<&str,FPointer>>=phf::phf_map!{
-	"DataModel"=>phf::phf_map!{
-		"GetService"=>place_id as FPointer,
-	}
-};
-
-pub fn set_globals(lua:&mlua::Lua,globals:&mlua::Table<'_>)->Result<(),mlua::Error>{
-	//class functions store
-	lua.set_app_data::<ClassFunctions<'static>>(ClassFunctions::default());
-
-	let instance_table=lua.create_table()?;
-
-	//Instance.new
-	instance_table.raw_set("new",
-		lua.create_function(|lua,(class_name,parent):(mlua::String,Option<Instance>)|{
-			let class_name_str=class_name.to_str()?;
-			let parent=parent.ok_or(mlua::Error::runtime("Nil Parent not yet supported"))?;
-			dom_mut(lua,|dom|{
-				//TODO: Nil instances
-				Ok(Instance::new(dom.insert(parent.referent,InstanceBuilder::new(class_name_str))))
-			})
-		})?
-	)?;
-
-	globals.set("Instance",instance_table)?;
-
-	Ok(())
-}
-
-// LMAO look at this function!
-fn dom_mut<T>(lua:&mlua::Lua,mut f:impl FnMut(&mut WeakDom)->mlua::Result<T>)->mlua::Result<T>{
-	let mut dom=lua.app_data_mut::<&'static mut WeakDom>().ok_or(mlua::Error::runtime("DataModel missing"))?;
-	f(&mut *dom)
-}
-fn class_functions_mut<T>(lua:&mlua::Lua,mut f:impl FnMut(&mut ClassFunctions<'_>)->mlua::Result<T>)->mlua::Result<T>{
-	let mut dom=lua.app_data_mut::<ClassFunctions<'static>>().ok_or(mlua::Error::runtime("ClassFunctions missing"))?;
-	f(&mut *dom)
-}
-
-fn coerce_float32(value:&mlua::Value)->Option<f32>{
-	match value{
-		&mlua::Value::Integer(i)=>Some(i as f32),
-		&mlua::Value::Number(f)=>Some(f as f32),
-		_=>None,
-	}
-}
-
-fn get_full_name(dom:&rbx_dom_weak::WeakDom,instance:&rbx_dom_weak::Instance)->String{
-	let mut full_name=instance.name.clone();
-	let mut pref=instance.parent();
-	while let Some(parent)=dom.get_by_ref(pref){
-		full_name.insert(0,'.');
-		full_name.insert_str(0,parent.name.as_str());
-		pref=parent.parent();
-	}
-	full_name
-}
-//helper function for script
-pub fn get_name_source(lua:&mlua::Lua,script:Instance)->Result<(String,String),mlua::Error>{
-	dom_mut(lua,|dom|{
-		let instance=script.get(dom)?;
-		let source=match instance.properties.get("Source"){
-			Some(rbx_dom_weak::types::Variant::String(s))=>s.clone(),
-			_=>Err(mlua::Error::external("Missing script.Source"))?,
-		};
-		Ok((get_full_name(dom,instance),source))
-	})
-}
-
-pub fn find_first_child<'a>(dom:&'a rbx_dom_weak::WeakDom,instance:&rbx_dom_weak::Instance,name:&str)->Option<&'a rbx_dom_weak::Instance>{
-	instance.children().iter().filter_map(|&r|dom.get_by_ref(r)).find(|inst|inst.name==name)
-}
-pub fn find_first_descendant<'a>(dom:&'a rbx_dom_weak::WeakDom,instance:&rbx_dom_weak::Instance,name:&str)->Option<&'a rbx_dom_weak::Instance>{
-	dom.descendants_of(instance.referent()).find(|&inst|inst.name==name)
-}
-
-pub fn find_first_child_of_class<'a>(dom:&'a rbx_dom_weak::WeakDom,instance:&rbx_dom_weak::Instance,class:&str)->Option<&'a rbx_dom_weak::Instance>{
-	instance.children().iter().filter_map(|&r|dom.get_by_ref(r)).find(|inst|inst.class==class)
-}
-pub fn find_first_descendant_of_class<'a>(dom:&'a rbx_dom_weak::WeakDom,instance:&rbx_dom_weak::Instance,class:&str)->Option<&'a rbx_dom_weak::Instance>{
-	dom.descendants_of(instance.referent()).find(|&inst|inst.class==class)
-}
-
-#[derive(Clone,Copy)]
-pub struct Instance{
-	referent:Ref,
-}
-impl Instance{
-	pub const fn new(referent:Ref)->Self{
-		Self{referent}
-	}
-	pub fn get<'a>(&self,dom:&'a WeakDom)->mlua::Result<&'a rbx_dom_weak::Instance>{
-		dom.get_by_ref(self.referent).ok_or(mlua::Error::runtime("Instance missing"))
-	}
-	pub fn get_mut<'a>(&self,dom:&'a mut WeakDom)->mlua::Result<&'a mut rbx_dom_weak::Instance>{
-		dom.get_by_ref_mut(self.referent).ok_or(mlua::Error::runtime("Instance missing"))
-	}
-}
-type_from_lua_userdata!(Instance);
-
-//TODO: update rbx_reflection and use dom.superclasses_iter
-pub struct SuperClassIter<'a> {
-    database: &'a rbx_reflection::ReflectionDatabase<'a>,
-    descriptor: Option<&'a rbx_reflection::ClassDescriptor<'a>>,
-}
-impl<'a> SuperClassIter<'a> {
-    fn next_descriptor(&self) -> Option<&'a rbx_reflection::ClassDescriptor<'a>> {
-        let superclass = self.descriptor?.superclass.as_ref()?;
-        self.database.classes.get(superclass)
-    }
-}
-impl<'a> Iterator for SuperClassIter<'a> {
-    type Item = &'a rbx_reflection::ClassDescriptor<'a>;
-    fn next(&mut self) -> Option<Self::Item> {
-        let next_descriptor = self.next_descriptor();
-        std::mem::replace(&mut self.descriptor, next_descriptor)
-    }
-}
-
-impl mlua::UserData for Instance{
-	fn add_fields<'lua,F:mlua::UserDataFields<'lua,Self>>(fields:&mut F){
-		fields.add_field_method_get("Parent",|lua,this|{
-			dom_mut(lua,|dom|{
-				let instance=this.get(dom)?;
-				Ok(Instance::new(instance.parent()))
-			})
-		});
-		fields.add_field_method_set("Parent",|lua,this,val:Option<Instance>|{
-			let parent=val.ok_or(mlua::Error::runtime("Nil Parent not yet supported"))?;
-			dom_mut(lua,|dom|{
-				dom.transfer_within(this.referent,parent.referent);
-				Ok(())
-			})
-		});
-		fields.add_field_method_get("Name",|lua,this|{
-			dom_mut(lua,|dom|{
-				let instance=this.get(dom)?;
-				Ok(instance.name.clone())
-			})
-		});
-		fields.add_field_method_set("Name",|lua,this,val:mlua::String|{
-			dom_mut(lua,|dom|{
-				let instance=this.get_mut(dom)?;
-				//Why does this need to be cloned?
-				instance.name=val.to_str()?.to_owned();
-				Ok(())
-			})
-		});
-		fields.add_field_method_get("ClassName",|lua,this|{
-			dom_mut(lua,|dom|{
-				let instance=this.get(dom)?;
-				Ok(instance.class.clone())
-			})
-		});
-	}
-	fn add_methods<'lua,M:mlua::UserDataMethods<'lua,Self>>(methods:&mut M){
-		methods.add_method("GetChildren",|lua,this,_:()|
-			dom_mut(lua,|dom|{
-				let instance=this.get(dom)?;
-				let children:Vec<_>=instance
-					.children()
-					.iter()
-					.copied()
-					.map(Instance::new)
-					.collect();
-				Ok(children)
-			})
-		);
-		let ffc=|lua,this:&Self,(name,search_descendants):(mlua::String,Option<bool>)|{
-			let name_str=name.to_str()?;
-			dom_mut(lua,|dom|{
-				let instance=this.get(dom)?;
-				Ok(
-					match search_descendants.unwrap_or(false){
-						true=>find_first_descendant(dom,instance,name_str),
-						false=>find_first_child(dom,instance,name_str),
-					}
-					.map(|instance|
-						Instance::new(instance.referent())
-					)
-				)
-			})
-		};
-		methods.add_method("FindFirstChild",ffc);
-		methods.add_method("WaitForChild",ffc);
-		methods.add_method("FindFirstChildOfClass",|lua,this,(class,search_descendants):(mlua::String,Option<bool>)|{
-			let class_str=class.to_str()?;
-			dom_mut(lua,|dom|{
-				Ok(
-					match search_descendants.unwrap_or(false){
-						true=>find_first_descendant_of_class(dom,this.get(dom)?,class_str),
-						false=>find_first_child_of_class(dom,this.get(dom)?,class_str),
-					}
-					.map(|instance|
-						Instance::new(instance.referent())
-					)
-				)
-			})
-		});
-		methods.add_method("GetDescendants",|lua,this,_:()|
-			dom_mut(lua,|dom|{
-				let children:Vec<_>=dom
-					.descendants_of(this.referent)
-					.map(|instance|
-						Instance::new(instance.referent())
-					)
-					.collect();
-				Ok(children)
-			})
-		);
-		methods.add_method("IsA",|lua,this,classname:mlua::String|
-			dom_mut(lua,|dom|{
-				let instance=this.get(dom)?;
-				Ok(crate::context::class_is_a(instance.class.as_str(),classname.to_str()?))
-			})
-		);
-		methods.add_method("Destroy",|lua,this,()|
-			dom_mut(lua,|dom|{
-				dom.destroy(this.referent);
-				Ok(())
-			})
-		);
-		methods.add_meta_function(mlua::MetaMethod::Index,|lua,(this,index):(Instance,mlua::String)|{
-			let index_str=index.to_str()?;
-			dom_mut(lua,|dom|{
-				let instance=this.get(dom)?;
-				//Find existing property
-				match instance.properties.get(index_str)
-					//Find default value
-					.or_else(||{
-						let db=rbx_reflection_database::get();
-						db.classes.get(instance.class.as_str()).and_then(|cd|
-							db.find_default_property(cd,index_str)
-						)
-					})
-				{
-					Some(&rbx_types::Variant::CFrame(cf))=>return Ok(Into::<super::cframe::CFrame>::into(cf).into_lua(lua)),
-					Some(&rbx_types::Variant::Vector3(v))=>return Ok(Into::<super::vector3::Vector3>::into(v).into_lua(lua)),
-					_=>(),
-				}
-				//find a function with a matching name
-				if let Some(ret)=class_functions_mut(lua,|cf|{
-					let class_str=instance.class.as_str();
-					let f=match CLASS_FUNCTION_DATABASE.get_entry(class_str){
-						Some((&static_class_str,class_functions))=>{
-							match cf.classes.entry(static_class_str){
-								Entry::Occupied(mut occupied_entry)=>{
-									match class_functions.get_entry(index_str){
-										Some((&static_index_str,function_pointer))=>{
-											match occupied_entry.get_mut().entry(static_index_str){
-												Entry::Occupied(occupied_entry)=>{
-													Some(occupied_entry.get().clone())
-												},
-												Entry::Vacant(vacant_entry)=>{
-													Some(vacant_entry.insert(unsafe{core::mem::transmute(lua.create_function(function_pointer)?)}).clone())
-												},
-											}
-										},
-										None=>None,
-									}
-								},
-								Entry::Vacant(vacant_entry)=>{
-									match class_functions.get_entry(index_str){
-										Some((&static_index_str,function_pointer))=>{
-											let mut h=HashMap::new();
-											h.entry(static_index_str).or_insert(unsafe{core::mem::transmute(lua.create_function(function_pointer)?)});
-											vacant_entry.insert(h).get(static_index_str).map(|f|f.clone())
-										},
-										None=>None,
-									}
-								},
-							}
-						},
-						None=>None,
-					};
-					Ok(f.map(|f|{
-						let f_static:mlua::Function::<'static>=unsafe{core::mem::transmute(f)};
-						f_static
-					}))
-				})?{
-					return Ok(ret.into_lua(lua));
-				}
-				//find a child with a matching name
-				Ok(
-					find_first_child(dom,instance,index_str)
-					.map(|instance|Instance::new(instance.referent()))
-					.into_lua(lua)
-				)
-			})
-		});
-		methods.add_meta_function(mlua::MetaMethod::NewIndex,|lua,(this,index,value):(Instance,mlua::String,mlua::Value)|{
-			dom_mut(lua,|dom|{
-				let instance=this.get_mut(dom)?;
-				//println!("__newindex t={} i={index:?} v={value:?}",instance.name);
-				let index_str=index.to_str()?;
-				let db=rbx_reflection_database::get();
-				let class=db.classes.get(instance.class.as_str()).ok_or(mlua::Error::runtime("Class missing"))?;
-				let mut iter=SuperClassIter{
-					database:db,
-					descriptor:Some(class),
-				};
-				let property=iter.find_map(|cls|cls.properties.get(index_str)).ok_or(mlua::Error::runtime(format!("Property '{index_str}' missing on class '{}'",class.name)))?;
-				match &property.data_type{
-					rbx_reflection::DataType::Value(rbx_types::VariantType::Vector3)=>{
-						let typed_value:Vector3=value.as_userdata().ok_or(mlua::Error::runtime("Expected Userdata"))?.take()?;
-						instance.properties.insert(index_str.to_owned(),rbx_types::Variant::Vector3(typed_value.into()));
-					},
-					rbx_reflection::DataType::Value(rbx_types::VariantType::Float32)=>{
-						let typed_value:f32=coerce_float32(&value).ok_or(mlua::Error::runtime("Expected f32"))?;
-						instance.properties.insert(index_str.to_owned(),rbx_types::Variant::Float32(typed_value));
-					},
-					rbx_reflection::DataType::Enum(enum_name)=>{
-						let typed_value=match &value{
-							&mlua::Value::Integer(int)=>Ok(rbx_types::Enum::from_u32(int as u32)),
-							&mlua::Value::Number(num)=>Ok(rbx_types::Enum::from_u32(num as u32)),
-							mlua::Value::String(s)=>{
-								let e=db.enums.get(enum_name).ok_or(mlua::Error::runtime("Database DataType Enum name  does not exist"))?;
-								Ok(rbx_types::Enum::from_u32(*e.items.get(s.to_str()?).ok_or(mlua::Error::runtime("Invalid enum item"))?))
-							},
-							mlua::Value::UserData(any_user_data)=>{
-								let e:super::r#enum::Enum=any_user_data.take()?;
-								Ok(e.into())
-							},
-							_=>Err(mlua::Error::runtime("Expected Enum")),
-						}?;
-						instance.properties.insert(index_str.to_owned(),rbx_types::Variant::Enum(typed_value));
-					},
-					rbx_reflection::DataType::Value(rbx_types::VariantType::Color3)=>{
-						let typed_value:super::color3::Color3=value.as_userdata().ok_or(mlua::Error::runtime("Expected Color3"))?.take()?;
-						instance.properties.insert(index_str.to_owned(),rbx_types::Variant::Color3(typed_value.into()));
-					},
-					rbx_reflection::DataType::Value(rbx_types::VariantType::Bool)=>{
-						let typed_value=value.as_boolean().ok_or(mlua::Error::runtime("Expected boolean"))?;
-						instance.properties.insert(index_str.to_owned(),rbx_types::Variant::Bool(typed_value));
-					},
-					rbx_reflection::DataType::Value(rbx_types::VariantType::String)=>{
-						let typed_value=value.as_str().ok_or(mlua::Error::runtime("Expected boolean"))?;
-						instance.properties.insert(index_str.to_owned(),rbx_types::Variant::String(typed_value.to_owned()));
-					},
-					other=>return Err(mlua::Error::runtime(format!("Unimplemented property type: {other:?}"))),
-				}
-				Ok(())
-			})
-		});
-	}
-}

src/runner/instance/instance.rs

@@ -0,0 +1,557 @@
+use std::collections::{hash_map::Entry,HashMap};
+
+use mlua::{FromLua,FromLuaMulti,IntoLua,IntoLuaMulti};
+use rbx_types::Ref;
+use rbx_dom_weak::{InstanceBuilder,WeakDom};
+
+use crate::runner::vector3::Vector3;
+
+pub fn set_globals(lua:&mlua::Lua,globals:&mlua::Table)->Result<(),mlua::Error>{
+	//class functions store
+	lua.set_app_data(ClassMethodsStore::default());
+	lua.set_app_data(InstanceValueStore::default());
+
+	let instance_table=lua.create_table()?;
+
+	//Instance.new
+	instance_table.raw_set("new",
+		lua.create_function(|lua,(class_name,parent):(mlua::String,Option<Instance>)|{
+			let class_name_str=&*class_name.to_str()?;
+			let parent=parent.ok_or_else(||mlua::Error::runtime("Nil Parent not yet supported"))?;
+			dom_mut(lua,|dom|{
+				//TODO: Nil instances
+				Ok(Instance::new(dom.insert(parent.referent,InstanceBuilder::new(class_name_str))))
+			})
+		})?
+	)?;
+
+	globals.set("Instance",instance_table)?;
+
+	Ok(())
+}
+
+// LMAO look at this function!
+pub fn dom_mut<T>(lua:&mlua::Lua,mut f:impl FnMut(&mut WeakDom)->mlua::Result<T>)->mlua::Result<T>{
+	let mut dom=lua.app_data_mut::<&'static mut WeakDom>().ok_or_else(||mlua::Error::runtime("DataModel missing"))?;
+	f(&mut *dom)
+}
+
+fn coerce_float32(value:&mlua::Value)->Option<f32>{
+	match value{
+		&mlua::Value::Integer(i)=>Some(i as f32),
+		&mlua::Value::Number(f)=>Some(f as f32),
+		_=>None,
+	}
+}
+
+fn get_full_name(dom:&rbx_dom_weak::WeakDom,instance:&rbx_dom_weak::Instance)->String{
+	let mut full_name=instance.name.clone();
+	let mut pref=instance.parent();
+	while let Some(parent)=dom.get_by_ref(pref){
+		full_name.insert(0,'.');
+		full_name.insert_str(0,parent.name.as_str());
+		pref=parent.parent();
+	}
+	full_name
+}
+//helper function for script
+pub fn get_name_source(lua:&mlua::Lua,script:Instance)->Result<(String,String),mlua::Error>{
+	dom_mut(lua,|dom|{
+		let instance=script.get(dom)?;
+		let source=match instance.properties.get("Source"){
+			Some(rbx_dom_weak::types::Variant::String(s))=>s.clone(),
+			_=>Err(mlua::Error::external("Missing script.Source"))?,
+		};
+		Ok((get_full_name(dom,instance),source))
+	})
+}
+
+pub fn find_first_child<'a>(dom:&'a rbx_dom_weak::WeakDom,instance:&rbx_dom_weak::Instance,name:&str)->Option<&'a rbx_dom_weak::Instance>{
+	instance.children().iter().filter_map(|&r|dom.get_by_ref(r)).find(|inst|inst.name==name)
+}
+pub fn find_first_descendant<'a>(dom:&'a rbx_dom_weak::WeakDom,instance:&rbx_dom_weak::Instance,name:&str)->Option<&'a rbx_dom_weak::Instance>{
+	dom.descendants_of(instance.referent()).find(|&inst|inst.name==name)
+}
+
+pub fn find_first_child_of_class<'a>(dom:&'a rbx_dom_weak::WeakDom,instance:&rbx_dom_weak::Instance,class:&str)->Option<&'a rbx_dom_weak::Instance>{
+	instance.children().iter().filter_map(|&r|dom.get_by_ref(r)).find(|inst|inst.class==class)
+}
+pub fn find_first_descendant_of_class<'a>(dom:&'a rbx_dom_weak::WeakDom,instance:&rbx_dom_weak::Instance,class:&str)->Option<&'a rbx_dom_weak::Instance>{
+	dom.descendants_of(instance.referent()).find(|&inst|inst.class==class)
+}
+
+#[derive(Clone,Copy)]
+pub struct Instance{
+	referent:Ref,
+}
+impl Instance{
+	pub const fn new(referent:Ref)->Self{
+		Self{referent}
+	}
+	pub fn get<'a>(&self,dom:&'a WeakDom)->mlua::Result<&'a rbx_dom_weak::Instance>{
+		dom.get_by_ref(self.referent).ok_or_else(||mlua::Error::runtime("Instance missing"))
+	}
+	pub fn get_mut<'a>(&self,dom:&'a mut WeakDom)->mlua::Result<&'a mut rbx_dom_weak::Instance>{
+		dom.get_by_ref_mut(self.referent).ok_or_else(||mlua::Error::runtime("Instance missing"))
+	}
+}
+type_from_lua_userdata!(Instance);
+
+//TODO: update rbx_reflection and use dom.superclasses_iter
+pub struct SuperClassIter<'a> {
+    database: &'a rbx_reflection::ReflectionDatabase<'a>,
+    descriptor: Option<&'a rbx_reflection::ClassDescriptor<'a>>,
+}
+impl<'a> SuperClassIter<'a> {
+    fn next_descriptor(&self) -> Option<&'a rbx_reflection::ClassDescriptor<'a>> {
+        let superclass = self.descriptor?.superclass.as_ref()?;
+        self.database.classes.get(superclass)
+    }
+}
+impl<'a> Iterator for SuperClassIter<'a> {
+    type Item = &'a rbx_reflection::ClassDescriptor<'a>;
+    fn next(&mut self) -> Option<Self::Item> {
+        let next_descriptor = self.next_descriptor();
+        std::mem::replace(&mut self.descriptor, next_descriptor)
+    }
+}
+
+impl mlua::UserData for Instance{
+	fn add_fields<F:mlua::UserDataFields<Self>>(fields:&mut F){
+		fields.add_field_method_get("Parent",|lua,this|{
+			dom_mut(lua,|dom|{
+				let instance=this.get(dom)?;
+				Ok(Instance::new(instance.parent()))
+			})
+		});
+		fields.add_field_method_set("Parent",|lua,this,val:Option<Instance>|{
+			let parent=val.ok_or_else(||mlua::Error::runtime("Nil Parent not yet supported"))?;
+			dom_mut(lua,|dom|{
+				dom.transfer_within(this.referent,parent.referent);
+				Ok(())
+			})
+		});
+		fields.add_field_method_get("Name",|lua,this|{
+			dom_mut(lua,|dom|{
+				let instance=this.get(dom)?;
+				Ok(instance.name.clone())
+			})
+		});
+		fields.add_field_method_set("Name",|lua,this,val:mlua::String|{
+			dom_mut(lua,|dom|{
+				let instance=this.get_mut(dom)?;
+				//Why does this need to be cloned?
+				instance.name=val.to_str()?.to_owned();
+				Ok(())
+			})
+		});
+		fields.add_field_method_get("ClassName",|lua,this|{
+			dom_mut(lua,|dom|{
+				let instance=this.get(dom)?;
+				Ok(instance.class.clone())
+			})
+		});
+	}
+	fn add_methods<M:mlua::UserDataMethods<Self>>(methods:&mut M){
+		methods.add_method("GetChildren",|lua,this,_:()|
+			dom_mut(lua,|dom|{
+				let instance=this.get(dom)?;
+				let children:Vec<_>=instance
+					.children()
+					.iter()
+					.copied()
+					.map(Instance::new)
+					.collect();
+				Ok(children)
+			})
+		);
+		fn ffc(lua:&mlua::Lua,this:&Instance,(name,search_descendants):(mlua::String,Option<bool>))->mlua::Result<Option<Instance>>{
+			let name_str=&*name.to_str()?;
+			dom_mut(lua,|dom|{
+				let instance=this.get(dom)?;
+				Ok(
+					match search_descendants.unwrap_or(false){
+						true=>find_first_descendant(dom,instance,name_str),
+						false=>find_first_child(dom,instance,name_str),
+					}
+					.map(|instance|
+						Instance::new(instance.referent())
+					)
+				)
+			})
+		}
+		methods.add_method("FindFirstChild",ffc);
+		methods.add_method("WaitForChild",ffc);
+		methods.add_method("FindFirstChildOfClass",|lua,this,(class,search_descendants):(mlua::String,Option<bool>)|{
+			let class_str=&*class.to_str()?;
+			dom_mut(lua,|dom|{
+				Ok(
+					match search_descendants.unwrap_or(false){
+						true=>find_first_descendant_of_class(dom,this.get(dom)?,class_str),
+						false=>find_first_child_of_class(dom,this.get(dom)?,class_str),
+					}
+					.map(|instance|
+						Instance::new(instance.referent())
+					)
+				)
+			})
+		});
+		methods.add_method("GetDescendants",|lua,this,_:()|
+			dom_mut(lua,|dom|{
+				let children:Vec<_>=dom
+					.descendants_of(this.referent)
+					.map(|instance|
+						Instance::new(instance.referent())
+					)
+					.collect();
+				Ok(children)
+			})
+		);
+		methods.add_method("IsA",|lua,this,classname:mlua::String|
+			dom_mut(lua,|dom|{
+				let instance=this.get(dom)?;
+				Ok(crate::context::class_is_a(instance.class.as_str(),&*classname.to_str()?))
+			})
+		);
+		methods.add_method("Destroy",|lua,this,()|
+			dom_mut(lua,|dom|{
+				dom.destroy(this.referent);
+				Ok(())
+			})
+		);
+		methods.add_meta_function(mlua::MetaMethod::ToString,|lua,this:Instance|{
+			dom_mut(lua,|dom|{
+				let instance=this.get(dom)?;
+				Ok(instance.name.clone())
+			})
+		});
+		methods.add_meta_function(mlua::MetaMethod::Index,|lua,(this,index):(Instance,mlua::String)|{
+			let index_str=&*index.to_str()?;
+			dom_mut(lua,|dom|{
+				let instance=this.get(dom)?;
+				//println!("__index t={} i={index:?}",instance.name);
+				let db=rbx_reflection_database::get();
+				let class=db.classes.get(instance.class.as_str()).ok_or_else(||mlua::Error::runtime("Class missing"))?;
+				//Find existing property
+				match instance.properties.get(index_str)
+					.cloned()
+					//Find default value
+					.or_else(||db.find_default_property(class,index_str).cloned())
+					//Find virtual property
+					.or_else(||{
+						SuperClassIter{
+							database:db,
+							descriptor:Some(class),
+						}
+						.find_map(|class|
+							find_virtual_property(&instance.properties,class,index_str)
+						)
+					})
+				{
+					Some(rbx_types::Variant::Int32(val))=>return val.into_lua(lua),
+					Some(rbx_types::Variant::Int64(val))=>return val.into_lua(lua),
+					Some(rbx_types::Variant::Float32(val))=>return val.into_lua(lua),
+					Some(rbx_types::Variant::Float64(val))=>return val.into_lua(lua),
+					Some(rbx_types::Variant::Ref(val))=>return Instance::new(val).into_lua(lua),
+					Some(rbx_types::Variant::CFrame(cf))=>return Into::<crate::runner::cframe::CFrame>::into(cf).into_lua(lua),
+					Some(rbx_types::Variant::Vector3(v))=>return Into::<crate::runner::vector3::Vector3>::into(v).into_lua(lua),
+					None=>(),
+					other=>return Err(mlua::Error::runtime(format!("Instance.__index Unsupported property type instance={} index={index_str} value={other:?}",instance.name))),
+				}
+				//find a function with a matching name
+				if let Some(function)=class_methods_store_mut(lua,|cf|{
+					let mut iter=SuperClassIter{
+						database:db,
+						descriptor:Some(class),
+					};
+					iter.find_map(|class|{
+						let mut class_methods=cf.get_or_create_class_methods(&class.name)?;
+						class_methods.get_or_create_function(lua,index_str)
+							.transpose()
+					}).transpose()
+				})?{
+					return function.into_lua(lua);
+				}
+
+				//find or create an associated userdata object
+				if let Some(value)=instance_value_store_mut(lua,|ivs|{
+					//TODO: walk class tree somehow
+					match ivs.get_or_create_instance_values(&instance){
+						Some(mut instance_values)=>instance_values.get_or_create_value(lua,index_str),
+						None=>Ok(None)
+					}
+				})?{
+					return value.into_lua(lua);
+				}
+				//find a child with a matching name
+				find_first_child(dom,instance,index_str)
+				.map(|instance|Instance::new(instance.referent()))
+				.into_lua(lua)
+			})
+		});
+		methods.add_meta_function(mlua::MetaMethod::NewIndex,|lua,(this,index,value):(Instance,mlua::String,mlua::Value)|{
+			dom_mut(lua,|dom|{
+				let instance=this.get_mut(dom)?;
+				//println!("__newindex t={} i={index:?} v={value:?}",instance.name);
+				let index_str=&*index.to_str()?;
+				let db=rbx_reflection_database::get();
+				let class=db.classes.get(instance.class.as_str()).ok_or_else(||mlua::Error::runtime("Class missing"))?;
+				let mut iter=SuperClassIter{
+					database:db,
+					descriptor:Some(class),
+				};
+				let property=iter.find_map(|cls|cls.properties.get(index_str)).ok_or_else(||mlua::Error::runtime(format!("Property '{index_str}' missing on class '{}'",class.name)))?;
+				match &property.data_type{
+					rbx_reflection::DataType::Value(rbx_types::VariantType::Vector3)=>{
+						let typed_value:Vector3=*value.as_userdata().ok_or_else(||mlua::Error::runtime("Expected Userdata"))?.borrow()?;
+						instance.properties.insert(index_str.to_owned(),rbx_types::Variant::Vector3(typed_value.into()));
+					},
+					rbx_reflection::DataType::Value(rbx_types::VariantType::Float32)=>{
+						let typed_value:f32=coerce_float32(&value).ok_or_else(||mlua::Error::runtime("Expected f32"))?;
+						instance.properties.insert(index_str.to_owned(),rbx_types::Variant::Float32(typed_value));
+					},
+					rbx_reflection::DataType::Enum(enum_name)=>{
+						let typed_value=match &value{
+							&mlua::Value::Integer(int)=>Ok(rbx_types::Enum::from_u32(int as u32)),
+							&mlua::Value::Number(num)=>Ok(rbx_types::Enum::from_u32(num as u32)),
+							mlua::Value::String(s)=>{
+								let e=db.enums.get(enum_name).ok_or_else(||mlua::Error::runtime("Database DataType Enum name  does not exist"))?;
+								Ok(rbx_types::Enum::from_u32(*e.items.get(&*s.to_str()?).ok_or_else(||mlua::Error::runtime("Invalid enum item"))?))
+							},
+							mlua::Value::UserData(any_user_data)=>{
+								let e:crate::runner::r#enum::Enum=*any_user_data.borrow()?;
+								Ok(e.into())
+							},
+							_=>Err(mlua::Error::runtime("Expected Enum")),
+						}?;
+						instance.properties.insert(index_str.to_owned(),rbx_types::Variant::Enum(typed_value));
+					},
+					rbx_reflection::DataType::Value(rbx_types::VariantType::Color3)=>{
+						let typed_value:crate::runner::color3::Color3=*value.as_userdata().ok_or_else(||mlua::Error::runtime("Expected Color3"))?.borrow()?;
+						instance.properties.insert(index_str.to_owned(),rbx_types::Variant::Color3(typed_value.into()));
+					},
+					rbx_reflection::DataType::Value(rbx_types::VariantType::Bool)=>{
+						let typed_value=value.as_boolean().ok_or_else(||mlua::Error::runtime("Expected boolean"))?;
+						instance.properties.insert(index_str.to_owned(),rbx_types::Variant::Bool(typed_value));
+					},
+					rbx_reflection::DataType::Value(rbx_types::VariantType::String)=>{
+						let typed_value=value.as_str().ok_or_else(||mlua::Error::runtime("Expected boolean"))?;
+						instance.properties.insert(index_str.to_owned(),rbx_types::Variant::String(typed_value.to_owned()));
+					},
+					rbx_reflection::DataType::Value(rbx_types::VariantType::NumberSequence)=>{
+						let typed_value:crate::runner::number_sequence::NumberSequence=*value.as_userdata().ok_or_else(||mlua::Error::runtime("Expected NumberSequence"))?.borrow()?;
+						instance.properties.insert(index_str.to_owned(),rbx_types::Variant::NumberSequence(typed_value.into()));
+					},
+					rbx_reflection::DataType::Value(rbx_types::VariantType::ColorSequence)=>{
+						let typed_value:crate::runner::color_sequence::ColorSequence=*value.as_userdata().ok_or_else(||mlua::Error::runtime("Expected ColorSequence"))?.borrow()?;
+						instance.properties.insert(index_str.to_owned(),rbx_types::Variant::ColorSequence(typed_value.into()));
+					},
+					other=>return Err(mlua::Error::runtime(format!("Unimplemented property type: {other:?}"))),
+				}
+				Ok(())
+			})
+		});
+	}
+}
+
+/// A class function definition shorthand.
+macro_rules! cf{
+	($f:expr)=>{
+		|lua,mut args|{
+			let this=Instance::from_lua(args.pop_front().unwrap_or(mlua::Value::Nil),lua)?;
+			$f(lua,this,FromLuaMulti::from_lua_multi(args,lua)?)?.into_lua_multi(lua)
+		}
+	};
+}
+type ClassFunctionPointer=fn(&mlua::Lua,mlua::MultiValue)->mlua::Result<mlua::MultiValue>;
+// TODO: use macros to define these with better organization
+/// A double hash map of function pointers.
+/// The class tree is walked by the Instance.__index metamethod to find available class methods.
+type CFD=phf::Map<&'static str,// Class name
+	phf::Map<&'static str,// Method name
+		ClassFunctionPointer
+	>
+>;
+static CLASS_FUNCTION_DATABASE:CFD=phf::phf_map!{
+	"DataModel"=>phf::phf_map!{
+		"GetService"=>cf!(|lua,_this,service:mlua::String|{
+			dom_mut(lua,|dom|{
+				//dom.root_ref()==this.referent ?
+				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(service))
+						);
+						Ok(Instance::new(referent))
+					},
+					other=>Err::<Instance,_>(mlua::Error::runtime(format!("Service '{other}' not supported"))),
+				}
+			})
+		}),
+	},
+	"Terrain"=>phf::phf_map!{
+		"FillBlock"=>cf!(|_lua,_,_:(crate::runner::cframe::CFrame,Vector3,crate::runner::r#enum::Enum)|mlua::Result::Ok(()))
+	},
+};
+
+/// A store of created functions for each Roblox class.
+/// Functions are created the first time they are accessed and stored in this data structure.
+#[derive(Default)]
+struct ClassMethodsStore{
+	classes:HashMap<&'static str,//ClassName
+		HashMap<&'static str,//Method name
+			mlua::Function
+		>
+	>
+}
+impl ClassMethodsStore{
+	/// return self.classes[class] or create the ClassMethods and then return it
+	fn get_or_create_class_methods(&mut self,class:&str)->Option<ClassMethods>{
+		// Use get_entry to get the &'static str keys of the database
+		// and use it as a key for the classes hashmap
+		CLASS_FUNCTION_DATABASE.get_entry(class)
+			.map(|(&static_class_str,method_pointers)|
+				ClassMethods{
+					method_pointers,
+					methods:self.classes.entry(static_class_str)
+					.or_insert_with(||HashMap::new()),
+				}
+			)
+	}
+}
+struct ClassMethods<'a>{
+	method_pointers:&'static phf::Map<&'static str,ClassFunctionPointer>,
+	methods:&'a mut HashMap<&'static str,mlua::Function>,
+}
+impl ClassMethods<'_>{
+	/// return self.methods[index] or create the function in the hashmap and then return it
+	fn get_or_create_function(&mut self,lua:&mlua::Lua,index:&str)->mlua::Result<Option<mlua::Function>>{
+		Ok(match self.method_pointers.get_entry(index){
+			Some((&static_index_str,&function_pointer))=>Some(
+				match self.methods.entry(static_index_str){
+					Entry::Occupied(entry)=>entry.get().clone(),
+					Entry::Vacant(entry)=>entry.insert(
+						lua.create_function(function_pointer)?
+					).clone(),
+				}
+			),
+			None=>None,
+		})
+	}
+}
+fn class_methods_store_mut<T>(lua:&mlua::Lua,mut f:impl FnMut(&mut ClassMethodsStore)->mlua::Result<T>)->mlua::Result<T>{
+	let mut cf=lua.app_data_mut::<ClassMethodsStore>().ok_or_else(||mlua::Error::runtime("ClassMethodsStore missing"))?;
+	f(&mut *cf)
+}
+
+/// A virtual property pointer definition shorthand.
+type VirtualPropertyFunctionPointer=fn(&rbx_types::Variant)->Option<rbx_types::Variant>;
+const fn vpp(
+	property:&'static str,
+	pointer:VirtualPropertyFunctionPointer,
+)->VirtualProperty{
+	VirtualProperty{
+		property,
+		pointer,
+	}
+}
+struct VirtualProperty{
+	property:&'static str,// Source property name
+	pointer:VirtualPropertyFunctionPointer,
+}
+type VPD=phf::Map<&'static str,// Class name
+	phf::Map<&'static str,// Virtual property name
+		VirtualProperty
+	>
+>;
+static VIRTUAL_PROPERTY_DATABASE:VPD=phf::phf_map!{
+	"BasePart"=>phf::phf_map!{
+		"Position"=>vpp("CFrame",|c:&rbx_types::Variant|{
+			let c=match c{
+				rbx_types::Variant::CFrame(c)=>c,
+				_=>return None,//fail silently and ungracefully
+			};
+			Some(rbx_types::Variant::Vector3(c.position))
+		}),
+	},
+};
+
+fn find_virtual_property(
+	properties:&HashMap<String,rbx_types::Variant>,
+	class:&rbx_reflection::ClassDescriptor,
+	index:&str
+)->Option<rbx_types::Variant>{
+	//Find virtual property
+	let class_virtual_properties=VIRTUAL_PROPERTY_DATABASE.get(&class.name)?;
+	let virtual_property=class_virtual_properties.get(index)?;
+
+	//Get source property
+	let variant=properties.get(virtual_property.property)?;
+
+	//Transform Source property with provided function
+	(virtual_property.pointer)(variant)
+}
+
+// lazy-loaded per-instance userdata values
+// This whole thing is a bad idea and a garbage collection nightmare.
+// TODO: recreate rbx_dom_weak with my own instance type that owns this data.
+type CreateUserData=fn(&mlua::Lua)->mlua::Result<mlua::AnyUserData>;
+type LUD=phf::Map<&'static str,// Class name
+	phf::Map<&'static str,// Value name
+		CreateUserData
+	>
+>;
+static LAZY_USER_DATA:LUD=phf::phf_map!{
+	"RunService"=>phf::phf_map!{
+		"RenderStepped"=>|lua|{
+			lua.create_any_userdata(crate::runner::script_signal::ScriptSignal::new())
+		},
+	},
+};
+#[derive(Default)]
+pub struct InstanceValueStore{
+	values:HashMap<Ref,
+		HashMap<&'static str,
+			mlua::AnyUserData
+		>
+	>,
+}
+pub struct InstanceValues<'a>{
+	named_values:&'static phf::Map<&'static str,CreateUserData>,
+	values:&'a mut HashMap<&'static str,mlua::AnyUserData>,
+}
+impl InstanceValueStore{
+	pub fn get_or_create_instance_values(&mut self,instance:&rbx_dom_weak::Instance)->Option<InstanceValues>{
+		LAZY_USER_DATA.get(instance.class.as_str())
+			.map(|named_values|
+				InstanceValues{
+					named_values,
+					values:self.values.entry(instance.referent())
+					.or_insert_with(||HashMap::new()),
+				}
+			)
+	}
+}
+impl InstanceValues<'_>{
+	pub fn get_or_create_value(&mut self,lua:&mlua::Lua,index:&str)->mlua::Result<Option<mlua::AnyUserData>>{
+		Ok(match self.named_values.get_entry(index){
+			Some((&static_index_str,&function_pointer))=>Some(
+				match self.values.entry(static_index_str){
+					Entry::Occupied(entry)=>entry.get().clone(),
+					Entry::Vacant(entry)=>entry.insert(
+						function_pointer(lua)?
+					).clone(),
+				}
+			),
+			None=>None,
+		})
+	}
+}
+
+pub fn instance_value_store_mut<T>(lua:&mlua::Lua,mut f:impl FnMut(&mut InstanceValueStore)->mlua::Result<T>)->mlua::Result<T>{
+	let mut cf=lua.app_data_mut::<InstanceValueStore>().ok_or_else(||mlua::Error::runtime("InstanceValueStore missing"))?;
+	f(&mut *cf)
+}

src/runner/instance/mod.rs

@@ -0,0 +1,2 @@
+pub mod instance;
+pub use instance::Instance;

src/runner/macros.rs

@@ -1,9 +1,9 @@
 macro_rules! type_from_lua_userdata{
 	($asd:ident)=>{
-		impl<'lua> mlua::FromLua<'lua> for $asd{
+		impl mlua::FromLua for $asd{
-			fn from_lua(value:mlua::Value<'lua>,_lua:&'lua mlua::Lua)->Result<Self,mlua::Error>{
+			fn from_lua(value:mlua::Value,_lua:&mlua::Lua)->Result<Self,mlua::Error>{
 				match value{
-					mlua::Value::UserData(ud)=>ud.take(),
+					mlua::Value::UserData(ud)=>Ok(*ud.borrow::<Self>()?),
 					other=>Err(mlua::Error::runtime(format!("Expected {} got {:?}",stringify!($asd),other))),
 				}
 			}
@@ -12,10 +12,10 @@ macro_rules! type_from_lua_userdata{
 }
 macro_rules! type_from_lua_userdata_lua_lifetime{
 	($asd:ident)=>{
-		impl<'lua> mlua::FromLua<'lua> for $asd<'lua>{
+		impl mlua::FromLua for $asd<'static>{
-			fn from_lua(value:mlua::Value<'lua>,_lua:&'lua mlua::Lua)->Result<Self,mlua::Error>{
+			fn from_lua(value:mlua::Value,_lua:&mlua::Lua)->Result<Self,mlua::Error>{
 				match value{
-					mlua::Value::UserData(ud)=>ud.take(),
+					mlua::Value::UserData(ud)=>Ok(*ud.borrow::<Self>()?),
 					other=>Err(mlua::Error::runtime(format!("Expected {} got {:?}",stringify!($asd),other))),
 				}
 			}

src/runner/mod.rs

@@ -7,5 +7,8 @@ mod color3;
 mod cframe;
 mod vector3;
 pub mod instance;
+mod script_signal;
+mod color_sequence;
+mod number_sequence;
 
-pub use runner::{Runner,Error};
+pub use runner::{Runner,Runnable,Error};

src/runner/number_sequence.rs

@@ -0,0 +1,31 @@
+#[derive(Clone,Copy)]
+pub struct NumberSequence{}
+impl NumberSequence{
+	pub const fn new()->Self{
+		Self{}
+	}
+}
+impl Into<rbx_types::NumberSequence> for NumberSequence{
+	fn into(self)->rbx_types::NumberSequence{
+		rbx_types::NumberSequence{
+			keypoints:Vec::new()
+		}
+	}
+}
+
+pub fn set_globals(lua:&mlua::Lua,globals:&mlua::Table)->Result<(),mlua::Error>{
+	let number_sequence_table=lua.create_table()?;
+
+	number_sequence_table.raw_set("new",
+		lua.create_function(|_,_:mlua::MultiValue|
+			Ok(NumberSequence::new())
+		)?
+	)?;
+
+	globals.set("NumberSequence",number_sequence_table)?;
+
+	Ok(())
+}
+
+impl mlua::UserData for NumberSequence{}
+type_from_lua_userdata!(NumberSequence);

src/runner/runner.rs

@@ -1,4 +1,6 @@
 use crate::context::Context;
+#[cfg(feature="run-service")]
+use crate::scheduler::scheduler_mut;
 
 pub struct Runner{
 	lua:mlua::Lua,
@@ -29,11 +31,16 @@ fn init(lua:&mlua::Lua)->mlua::Result<()>{
 	//global environment
 	let globals=lua.globals();
 
+	#[cfg(feature="run-service")]
+	crate::scheduler::set_globals(lua,&globals)?;
+	super::script_signal::set_globals(lua,&globals)?;
 	super::r#enum::set_globals(lua,&globals)?;
 	super::color3::set_globals(lua,&globals)?;
 	super::vector3::set_globals(lua,&globals)?;
 	super::cframe::set_globals(lua,&globals)?;
-	super::instance::set_globals(lua,&globals)?;
+	super::instance::instance::set_globals(lua,&globals)?;
+	super::number_sequence::set_globals(lua,&globals)?;
+	super::color_sequence::set_globals(lua,&globals)?;
 
 	Ok(())
 }
@@ -58,6 +65,8 @@ impl Runner{
 		}
 		//this makes set_app_data shut up about the lifetime
 		self.lua.set_app_data::<&'static mut rbx_dom_weak::WeakDom>(unsafe{core::mem::transmute(&mut context.dom)});
+		#[cfg(feature="run-service")]
+		self.lua.set_app_data::<crate::scheduler::Scheduler>(crate::scheduler::Scheduler::default());
 		Ok(Runnable{
 			lua:self.lua,
 			_lifetime:&std::marker::PhantomData
@@ -73,15 +82,62 @@ pub struct Runnable<'a>{
 impl Runnable<'_>{
 	pub fn drop_context(self)->Runner{
 		self.lua.remove_app_data::<&'static mut rbx_dom_weak::WeakDom>();
+		#[cfg(feature="run-service")]
+		self.lua.remove_app_data::<crate::scheduler::Scheduler>();
 		Runner{
 			lua:self.lua,
 		}
 	}
 	pub fn run_script(&self,script:super::instance::Instance)->Result<(),Error>{
-		let (name,source)=super::instance::get_name_source(&self.lua,script).map_err(Error::RustLua)?;
+		let (name,source)=super::instance::instance::get_name_source(&self.lua,script).map_err(Error::RustLua)?;
-		self.lua.globals().set("script",script).map_err(Error::RustLua)?;
+		self.lua.globals().raw_set("script",script).map_err(Error::RustLua)?;
-		self.lua.load(source.as_str())
+		let f=self.lua.load(source.as_str())
-		.set_name(name)
+		.set_name(name).into_function().map_err(Error::RustLua)?;
-		.exec().map_err(|error|Error::Lua{source,error})
+		// TODO: set_environment without losing the ability to print from Lua
+		let thread=self.lua.create_thread(f).map_err(Error::RustLua)?;
+		thread.resume::<mlua::MultiValue>(()).map_err(|error|Error::Lua{source,error})?;
+		// wait() is called from inside Lua and goes to a rust function that schedules the thread and then yields
+		// No need to schedule the thread here
+		Ok(())
+	}
+	#[cfg(feature="run-service")]
+	pub fn has_scheduled_threads(&self)->Result<bool,mlua::Error>{
+		scheduler_mut(&self.lua,|scheduler|
+			Ok(scheduler.has_scheduled_threads())
+		)
+	}
+	#[cfg(feature="run-service")]
+	pub fn game_tick(&self)->Result<(),mlua::Error>{
+		if let Some(threads)=scheduler_mut(&self.lua,|scheduler|Ok(scheduler.tick_threads()))?{
+			for thread in threads{
+				//TODO: return dt and total run time
+				let result=thread.resume::<mlua::MultiValue>((1.0/30.0,0.0))
+					.map_err(|error|Error::Lua{source:"source unavailable".to_owned(),error});
+				match result{
+					Ok(_)=>(),
+					Err(e)=>println!("game_tick Error: {e}"),
+				}
+			}
+		}
+		Ok(())
+	}
+	#[cfg(feature="run-service")]
+	pub fn run_service_step(&self)->Result<(),mlua::Error>{
+		let render_stepped=super::instance::instance::dom_mut(&self.lua,|dom|{
+			let run_service=super::instance::instance::find_first_child_of_class(dom,dom.root(),"RunService").ok_or_else(||mlua::Error::runtime("RunService missing"))?;
+			super::instance::instance::instance_value_store_mut(&self.lua,|instance_value_store|{
+				//unwrap because I trust my find_first_child_of_class function to
+				let mut instance_values=instance_value_store.get_or_create_instance_values(run_service).ok_or_else(||mlua::Error::runtime("RunService InstanceValues missing"))?;
+				let render_stepped=instance_values.get_or_create_value(&self.lua,"RenderStepped")?;
+				//let stepped=instance_values.get_or_create_value(&self.lua,"Stepped")?;
+				//let heartbeat=instance_values.get_or_create_value(&self.lua,"Heartbeat")?;
+				Ok(render_stepped)
+			})
+		})?;
+		if let Some(render_stepped)=render_stepped{
+			let signal:&super::script_signal::ScriptSignal=&*render_stepped.borrow()?;
+			signal.fire(&mlua::MultiValue::new());
+		}
+		Ok(())
 	}
 }

src/runner/script_signal.rs

@@ -0,0 +1,172 @@
+use std::{cell::RefCell,rc::Rc};
+
+use mlua::UserDataFields;
+
+#[derive(Clone)]
+struct FunctionList{
+	functions:Vec<mlua::Function>,
+}
+impl FunctionList{
+	pub fn new()->Self{
+		Self{
+			functions: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
+		for function in self.functions{
+			//wee let's allocate for our function calls
+			if let Err(e)=function.call::<mlua::MultiValue>(args.clone()){
+				println!("Script Signal Error: {e}");
+			}
+		}
+	}
+}
+#[derive(Clone)]
+struct RcFunctionList{
+	functions:Rc<RefCell<FunctionList>>,
+}
+impl RcFunctionList{
+	pub fn new()->Self{
+		Self{
+			functions:Rc::new(RefCell::new(FunctionList::new())),
+		}
+	}
+	pub fn fire(&self,args:&mlua::MultiValue){
+		// Make a copy of the list in case Lua attempts to modify it during the loop
+		self.functions.borrow().clone().fire(args)
+	}
+}
+#[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.
+	connections:RcFunctionList,
+	once:RcFunctionList,
+	wait:Rc<RefCell<Vec<mlua::Thread>>>,
+}
+pub struct ScriptConnection{
+	connection:RcFunctionList,
+	function:mlua::Function,
+}
+impl ScriptSignal{
+	pub fn new()->Self{
+		Self{
+			connections:RcFunctionList::new(),
+			once:RcFunctionList::new(),
+			wait:Rc::new(RefCell::new(Vec::new())),
+		}
+	}
+	pub fn fire(&self,args:&mlua::MultiValue){
+		self.connections.fire(args);
+		//Replace the FunctionList with an empty one and drop the borrow
+		let once=std::mem::replace(&mut *self.once.functions.borrow_mut(),FunctionList::new());
+		once.fire(args);
+		//resume threads waiting for this signal
+		let threads=std::mem::replace(&mut *self.wait.borrow_mut(),Vec::new());
+		for thread in threads{
+			if let Err(e)=thread.resume::<mlua::MultiValue>(args.clone()){
+				println!("Script Signal thread resume Error: {e}");
+			}
+		}
+	}
+	pub fn connect(&self,function:mlua::Function)->ScriptConnection{
+		self.connections.functions.borrow_mut().functions.push(function.clone());
+		ScriptConnection{
+			connection:self.connections.clone(),
+			function,
+		}
+	}
+	pub fn once(&self,function:mlua::Function)->ScriptConnection{
+		self.once.functions.borrow_mut().functions.push(function.clone());
+		ScriptConnection{
+			connection:self.once.clone(),
+			function,
+		}
+	}
+	pub fn wait(&self,thread:mlua::Thread){
+		self.wait.borrow_mut().push(thread);
+	}
+}
+impl ScriptConnection{
+	pub fn position(&self)->Option<usize>{
+		self.connection.functions.borrow().functions.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))
+		);
+		methods.add_method("Once",|_lua,this,f:mlua::Function|
+			Ok(this.once(f))
+		);
+		// Fire is not allowed to be called from Lua
+		// methods.add_method("Fire",|_lua,this,args:mlua::MultiValue|
+		// 	Ok(this.fire(args))
+		// );
+	}
+}
+impl mlua::FromLua for ScriptSignal{
+	fn from_lua(value:mlua::Value,_lua:&mlua::Lua)->Result<Self,mlua::Error>{
+		match value{
+			mlua::Value::UserData(ud)=>Ok(ud.borrow::<Self>()?.clone()),
+			other=>Err(mlua::Error::runtime(format!("Expected {} got {:?}",stringify!(ScriptSignal),other))),
+		}
+	}
+}
+
+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.connection.functions.borrow_mut().functions.remove(index);
+			}
+			Ok(())
+		});
+	}
+}
+
+fn wait_thread(lua:&mlua::Lua,this:ScriptSignal)->Result<(),mlua::Error>{
+	Ok(this.wait(lua.current_thread()))
+}
+
+// This is used to avoid calling coroutine.yield from the rust side.
+const LUA_WAIT:&str=
+"local coroutine_yield=coroutine.yield
+local wait_thread=wait_thread
+return function(signal)
+	wait_thread(signal)
+	return coroutine_yield()
+end";
+
+pub fn set_globals(lua:&mlua::Lua,globals:&mlua::Table)->Result<(),mlua::Error>{
+	let coroutine_table=globals.get::<mlua::Table>("coroutine")?;
+	let wait_thread=lua.create_function(wait_thread)?;
+
+	//create wait function environment
+	let wait_env=lua.create_table()?;
+	wait_env.raw_set("coroutine",coroutine_table)?;
+	wait_env.raw_set("wait_thread",wait_thread)?;
+
+	//construct wait function from Lua code
+	let wait=lua.load(LUA_WAIT)
+	.set_name("wait")
+	.set_environment(wait_env)
+	.call::<mlua::Function>(())?;
+
+	lua.register_userdata_type::<ScriptSignal>(|reg|{
+		reg.add_field("Wait",wait);
+		mlua::UserData::register(reg);
+	})?;
+
+	Ok(())
+}

src/runner/vector3.rs

@@ -7,7 +7,7 @@ impl Vector3{
 	}
 }
 
-pub fn set_globals(lua:&mlua::Lua,globals:&mlua::Table<'_>)->Result<(),mlua::Error>{
+pub fn set_globals(lua:&mlua::Lua,globals:&mlua::Table)->Result<(),mlua::Error>{
 	let vector3_table=lua.create_table()?;
 
 	//Vector3.new
@@ -35,7 +35,7 @@ impl From<rbx_types::Vector3> for Vector3{
 }
 
 impl mlua::UserData for Vector3{
-	fn add_fields<'lua,F: mlua::UserDataFields<'lua,Self>>(fields: &mut F){
+	fn add_fields<F:mlua::UserDataFields<Self>>(fields:&mut F){
 		fields.add_field_method_get("magnitude",|_,this|Ok(this.0.length()));
 		fields.add_field_method_get("x",|_,this|Ok(this.0.x));
 		fields.add_field_method_set("x",|_,this,val|{
@@ -54,7 +54,7 @@ impl mlua::UserData for Vector3{
 		});
 	}
 
-	fn add_methods<'lua,M: mlua::UserDataMethods<'lua,Self>>(methods:&mut M){
+	fn add_methods<M:mlua::UserDataMethods<Self>>(methods:&mut M){
 		//methods.add_method("area",|_,this,()| Ok(this.length * this.width));
 
 		methods.add_meta_function(mlua::MetaMethod::Add,|_,(this,val):(Self,Self)|Ok(Self(this.0+val.0)));

src/scheduler.rs

@@ -0,0 +1,106 @@
+pub use tick::Tick;
+mod tick{
+	#[derive(Clone,Copy,Default,Hash,PartialEq,Eq,PartialOrd,Ord)]
+	pub struct Tick(u64);
+	impl std::ops::Add<u64> for Tick{
+		type Output=Self;
+		fn add(self,rhs:u64)->Self::Output{
+			Self(self.0+rhs)
+		}
+	}
+	impl std::ops::Sub<u64> for Tick{
+		type Output=Self;
+		fn sub(self,rhs:u64)->Self::Output{
+			Self(self.0-rhs)
+		}
+	}
+	impl std::ops::AddAssign<u64> for Tick{
+		fn add_assign(&mut self,rhs:u64){
+			self.0+=rhs;
+		}
+	}
+	impl std::ops::SubAssign<u64> for Tick{
+		fn sub_assign(&mut self,rhs:u64){
+			self.0-=rhs;
+		}
+	}
+}
+#[derive(Default)]
+pub struct Scheduler{
+	tick:Tick,
+	schedule:std::collections::HashMap<Tick,Vec<mlua::Thread>>,
+}
+
+impl Scheduler{
+	pub fn has_scheduled_threads(&self)->bool{
+		!self.schedule.is_empty()
+	}
+	pub fn schedule_thread(&mut self,delay:u64,thread:mlua::Thread){
+		self.schedule.entry(self.tick+delay.max(1))
+		.or_insert(Vec::new())
+		.push(thread);
+	}
+	pub fn tick_threads(&mut self)->Option<Vec<mlua::Thread>>{
+		self.tick+=1;
+		self.schedule.remove(&self.tick)
+	}
+}
+
+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_else(||mlua::Error::runtime("Scheduler missing"))?;
+	f(&mut *scheduler)
+}
+
+fn schedule_thread(lua:&mlua::Lua,dt:mlua::Value)->Result<(),mlua::Error>{
+	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(())
+	})
+}
+
+// This is used to avoid calling coroutine.yield from the rust side.
+const LUA_WAIT:&str=
+"local coroutine_yield=coroutine.yield
+local schedule_thread=schedule_thread
+return function(dt)
+	schedule_thread(dt)
+	return coroutine_yield()
+end";
+
+pub fn set_globals(lua:&mlua::Lua,globals:&mlua::Table)->Result<(),mlua::Error>{
+	let coroutine_table=globals.get::<mlua::Table>("coroutine")?;
+	let schedule_thread=lua.create_function(schedule_thread)?;
+
+	//create wait function environment
+	let wait_env=lua.create_table()?;
+	wait_env.raw_set("coroutine",coroutine_table)?;
+	wait_env.raw_set("schedule_thread",schedule_thread)?;
+
+	//construct wait function from Lua code
+	let wait=lua.load(LUA_WAIT)
+	.set_name("wait")
+	.set_environment(wait_env)
+	.call::<mlua::Function>(())?;
+
+	globals.raw_set("wait",wait)?;
+
+	Ok(())
+}