residentsleeper/scripting/event/event.go

package event

import (
	lua "github.com/yuin/gopher-lua"
	luar "layeh.com/gopher-luar"
	"meow.tf/residentsleeper/events"
	"meow.tf/residentsleeper/scripting/eventloop"
)

func Loader(L *lua.LState) int {
	// register functions to the table
	mod := L.SetFuncs(L.NewTable(), exports)

	// returns the module
	L.Push(mod)
	return 1
}

var exports = map[string]lua.LGFunction{
	"on": onFunc,
}

func onFunc(L *lua.LState) int {
	name := L.CheckString(1)
	handler := L.CheckFunction(2)

	loop := eventloop.FromState(L)

	events.On(name, func(args ...interface{}) {
		loop.RunOnLoop(func(L *lua.LState) {
			L.Push(handler)

			for _, arg := range args {
				L.Push(luar.New(L, arg))
			}

			L.PCall(len(args), 0, handler)
		})
	})

	return 0
}