forked from StrafesNET/strafe-project
124 lines
4.0 KiB
Rust
124 lines
4.0 KiB
Rust
use crate::context::Context;
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#[cfg(feature="run-service")]
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use crate::scheduler::scheduler_mut;
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pub struct Runner{
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lua:mlua::Lua,
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}
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#[derive(Debug)]
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pub enum Error{
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Lua{
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source:String,
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error:mlua::Error
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},
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RustLua(mlua::Error),
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NoServices,
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}
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impl std::fmt::Display for Error{
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fn fmt(&self,f:&mut std::fmt::Formatter<'_>)->std::fmt::Result{
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match self{
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Self::Lua{source,error}=>write!(f,"lua error: source:\n{source}\n{error}"),
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Self::RustLua(error)=>write!(f,"rust-side lua error: {error}"),
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other=>write!(f,"{other:?}"),
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}
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}
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}
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impl std::error::Error for Error{}
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fn init(lua:&mlua::Lua)->mlua::Result<()>{
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lua.sandbox(true)?;
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//global environment
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let globals=lua.globals();
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#[cfg(feature="run-service")]
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crate::scheduler::set_globals(lua,&globals)?;
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super::r#enum::set_globals(lua,&globals)?;
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super::color3::set_globals(lua,&globals)?;
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super::vector3::set_globals(lua,&globals)?;
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super::cframe::set_globals(lua,&globals)?;
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super::instance::set_globals(lua,&globals)?;
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super::number_sequence::set_globals(lua,&globals)?;
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super::color_sequence::set_globals(lua,&globals)?;
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Ok(())
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}
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impl Runner{
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pub fn new()->Result<Self,Error>{
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let runner=Self{
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lua:mlua::Lua::new(),
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};
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init(&runner.lua).map_err(Error::RustLua)?;
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Ok(runner)
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}
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pub fn runnable_context<'a>(self,context:&'a mut Context)->Result<Runnable<'a>,Error>{
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let services=context.find_services().ok_or(Error::NoServices)?;
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self.runnable_context_with_services(context,&services)
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}
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pub fn runnable_context_with_services<'a>(self,context:&'a mut Context,services:&crate::context::Services)->Result<Runnable<'a>,Error>{
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{
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let globals=self.lua.globals();
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globals.set("game",super::instance::Instance::new(services.game)).map_err(Error::RustLua)?;
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globals.set("workspace",super::instance::Instance::new(services.workspace)).map_err(Error::RustLua)?;
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}
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//this makes set_app_data shut up about the lifetime
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self.lua.set_app_data::<&'static mut rbx_dom_weak::WeakDom>(unsafe{core::mem::transmute(&mut context.dom)});
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#[cfg(feature="run-service")]
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self.lua.set_app_data::<crate::scheduler::Scheduler>(crate::scheduler::Scheduler::default());
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Ok(Runnable{
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lua:self.lua,
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_lifetime:&std::marker::PhantomData
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})
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}
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}
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//Runnable is the same thing but has context set, which it holds the lifetime for.
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pub struct Runnable<'a>{
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lua:mlua::Lua,
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_lifetime:&'a std::marker::PhantomData<()>
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}
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impl Runnable<'_>{
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pub fn drop_context(self)->Runner{
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self.lua.remove_app_data::<&'static mut rbx_dom_weak::WeakDom>();
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#[cfg(feature="run-service")]
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self.lua.remove_app_data::<crate::scheduler::Scheduler>();
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Runner{
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lua:self.lua,
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}
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}
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pub fn run_script(&self,script:super::instance::Instance)->Result<(),Error>{
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let (name,source)=super::instance::get_name_source(&self.lua,script).map_err(Error::RustLua)?;
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self.lua.globals().raw_set("script",script).map_err(Error::RustLua)?;
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let f=self.lua.load(source.as_str())
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.set_name(name).into_function().map_err(Error::RustLua)?;
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// TODO: set_environment without losing the ability to print from Lua
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let thread=self.lua.create_thread(f).map_err(Error::RustLua)?;
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thread.resume::<mlua::MultiValue>(()).map_err(|error|Error::Lua{source,error})?;
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// wait() is called from inside Lua and goes to a rust function that schedules the thread and then yields
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// No need to schedule the thread here
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Ok(())
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}
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#[cfg(feature="run-service")]
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pub fn has_scheduled_threads(&self)->Result<bool,mlua::Error>{
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scheduler_mut(&self.lua,|scheduler|
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Ok(scheduler.has_scheduled_threads())
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)
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}
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#[cfg(feature="run-service")]
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pub fn game_tick(&self)->Result<(),mlua::Error>{
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if let Some(threads)=scheduler_mut(&self.lua,|scheduler|Ok(scheduler.tick_threads()))?{
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for thread in threads{
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//TODO: return dt and total run time
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let result=thread.resume::<mlua::MultiValue>((1.0/30.0,0.0))
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.map_err(|error|Error::Lua{source:"source unavailable".to_owned(),error});
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match result{
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Ok(_)=>(),
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Err(e)=>println!("game_tick Error: {e}"),
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}
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}
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}
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Ok(())
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}
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}
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