RBXScriptSignal
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43ab764b18
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@ -7,7 +7,8 @@ mod color3;
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mod cframe;
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mod vector3;
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pub mod instance;
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mod number_sequence;
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mod script_signal;
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mod color_sequence;
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mod number_sequence;
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pub use runner::{Runner,Runnable,Error};
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72
src/runner/script_signal.rs
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72
src/runner/script_signal.rs
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@ -0,0 +1,72 @@
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use std::{cell::RefCell,rc::Rc};
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#[derive(Clone)]
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pub struct ScriptSignal{
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// Emulate the garbage roblox api.
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// ScriptConnection should not exist.
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// :Disconnect should be a method on ScriptSignal, and this would be avoided entirely.
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callbacks:Rc<RefCell<Vec<mlua::Function>>>,
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}
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pub struct ScriptConnection{
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signal:ScriptSignal,
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function:mlua::Function,
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}
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impl ScriptSignal{
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pub fn new()->Self{
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Self{
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callbacks:Rc::new(RefCell::new(Vec::new())),
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}
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}
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// This eats the Lua error
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pub fn fire(&self,args:mlua::MultiValue){
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// Make a copy of the list in case Lua attempts to modify it during the loop
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let functions=self.callbacks.borrow().clone();
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for function in functions{
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//wee let's allocate for our function calls
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if let Err(e)=function.call::<mlua::MultiValue>(args.clone()){
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println!("Script Signal Error: {e}");
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}
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}
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}
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pub fn connect(&self,function:mlua::Function)->ScriptConnection{
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self.callbacks.borrow_mut().push(function.clone());
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ScriptConnection{
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signal:self.clone(),
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function,
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}
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}
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}
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impl ScriptConnection{
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pub fn position(&self)->Option<usize>{
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self.signal.callbacks.borrow().iter().position(|function|function==&self.function)
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}
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}
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impl mlua::UserData for ScriptSignal{
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fn add_methods<M:mlua::UserDataMethods<Self>>(methods:&mut M){
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methods.add_method("Connect",|_lua,this,f:mlua::Function|
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Ok(this.connect(f))
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);
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// Fire is not allowed to be called from Lua
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// methods.add_method("Fire",|_lua,this,args:mlua::MultiValue|
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// Ok(this.fire(args))
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// );
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}
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}
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//type_from_lua_userdata!(ScriptSignal);
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impl mlua::UserData for ScriptConnection{
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fn add_fields<F:mlua::UserDataFields<Self>>(fields:&mut F){
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fields.add_field_method_get("Connected",|_,this|{
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Ok(this.position().is_some())
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});
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}
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fn add_methods<M:mlua::UserDataMethods<Self>>(methods:&mut M){
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methods.add_method("Disconnect",|_,this,_:()|{
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if let Some(index)=this.position(){
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this.signal.callbacks.borrow_mut().remove(index);
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}
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Ok(())
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});
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}
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}
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