Files
strafe-project/lib/roblox_emulator/src/context.rs

122 lines
3.9 KiB
Rust

use crate::util::static_ustr;
use rbx_dom_weak::{types::Ref,InstanceBuilder,WeakDom};
#[derive(Debug)]
pub enum ServicesError{
WorkspaceNotFound,
}
impl std::fmt::Display for ServicesError{
fn fmt(&self,f:&mut std::fmt::Formatter<'_>)->std::fmt::Result{
write!(f,"{self:?}")
}
}
impl std::error::Error for ServicesError{}
pub struct Services{
pub(crate) game:Ref,
pub(crate) workspace:Ref,
}
impl Services{
fn find_services(dom:&WeakDom)->Result<Services,ServicesError>{
Ok(Services{
workspace:*dom.root().children().iter().find(|&&r|
dom.get_by_ref(r).is_some_and(|instance|instance.class=="Workspace")
).ok_or(ServicesError::WorkspaceNotFound)?,
game:dom.root_ref(),
})
}
}
pub type LuaAppData=&'static mut WeakDom;
pub struct Context{
pub(crate)dom:WeakDom,
pub(crate)services:Services,
}
impl Context{
pub fn from_place(dom:WeakDom)->Result<Context,ServicesError>{
let services=Services::find_services(&dom)?;
Ok(Self{dom,services})
}
pub fn script_singleton(source:String)->(Context,crate::runner::instance::Instance){
let script=InstanceBuilder::new("Script")
.with_property("Source",rbx_types::Variant::String(source));
let script_ref=script.referent();
let dom=WeakDom::new(
InstanceBuilder::new("DataModel")
.with_child(script)
);
let context=Self::from_model(dom);
(context,crate::runner::instance::Instance::new_unchecked(script_ref))
}
/// Creates an iterator over all items of a particular class.
pub fn superclass_iter<'a>(&'a self,superclass:&'a str)->impl Iterator<Item=Ref>+'a{
let db=rbx_reflection_database::get();
let Some(superclass)=db.classes.get(superclass)else{
panic!("Invalid class");
};
self.dom.descendants().filter_map(|instance|{
let class=db.classes.get(instance.class.as_str())?;
db.has_superclass(class,superclass).then(||instance.referent())
})
}
pub fn scripts(&self)->Vec<crate::runner::instance::Instance>{
self.superclass_iter("Script")
.filter_map(|script_ref|{
let script=self.dom.get_by_ref(script_ref)?;
if let None|Some(rbx_dom_weak::types::Variant::Bool(false))=script.properties.get(&static_ustr("Disabled")){
return Some(crate::runner::instance::Instance::new_unchecked(script_ref));
}
None
})
.collect()
}
pub fn from_model(mut dom:WeakDom)->Context{
//snapshot root instances
let children=dom.root().children().to_owned();
//insert services
let game=dom.root_ref();
let terrain_bldr=InstanceBuilder::new("Terrain")
.with_properties([
("CFrame",rbx_dom_weak::types::Variant::CFrame(rbx_dom_weak::types::CFrame::new(rbx_dom_weak::types::Vector3::new(0.0,0.0,0.0),rbx_dom_weak::types::Matrix3::identity()))),
("Size",rbx_dom_weak::types::Variant::Vector3(rbx_dom_weak::types::Vector3::new(1.0,1.0,1.0))),
("Velocity",rbx_dom_weak::types::Variant::Vector3(rbx_dom_weak::types::Vector3::new(0.0,0.0,0.0))),
("Transparency",rbx_dom_weak::types::Variant::Float32(0.0)),
("Color",rbx_dom_weak::types::Variant::Color3uint8(rbx_dom_weak::types::Color3uint8::new(255,255,255))),
("CanCollide",rbx_dom_weak::types::Variant::Bool(true)),
]);
let workspace=dom.insert(game,
InstanceBuilder::new("Workspace")
//Set Workspace.Terrain property equal to Terrain
.with_property("Terrain",terrain_bldr.referent())
.with_child(terrain_bldr)
);
//transfer original root instances into workspace
for instance in children{
dom.transfer_within(instance,workspace);
}
{
//Lowercase and upper case workspace property!
let game=dom.root_mut();
// TODO: DELETE THIS!
game.properties.insert(static_ustr("workspace"),rbx_types::Variant::Ref(workspace));
game.properties.insert(static_ustr("Workspace"),rbx_types::Variant::Ref(workspace));
}
dom.insert(game,InstanceBuilder::new("Lighting"));
let services=Services{game,workspace};
Self{dom,services}
}
}
impl AsRef<WeakDom> for Context{
fn as_ref(&self)->&WeakDom{
&self.dom
}
}