chatlaser

modules = peripheral.wrap("back")
modules.capture("^!")
rednet.open("right")
targets = {}
id = 0

function addTargets(msg)
	local point = string.find(msg, ",")
	if point and point > 2 then
		table.insert(targets, #targets + 1, string.sub(msg,1, point-1))
		print(string.sub(msg,1, point-1))
		addTargets(string.sub(msg, point + 1))
	else
		table.insert(targets, #targets + 1, msg)
		print(msg)
	end
end

function chat()
	while true do
		local _, message, pattern = os.pullEvent("chat_capture")
		if string.sub(message, 1,8) == "!onsight" then
			if string.sub(message,10) == "default" then
				rednet.send(id, {"Skeleton","Creeper","Zombie","Spider","Witch"})
				rednet.send(id, 0.5)
			elseif string.len(string.sub(message,10)) > 0 then
				for i = 1, #targets do
					targets[i] = nil
				end
				addTargets(string.sub(message,10))
				rednet.send(id, targets)
			end
		elseif string.sub(message, 1,6) == "!power" then
			rednet.send(id, tonumber(string.sub(message, 8)))
		elseif string.sub(message, 1,3) == "!id" then
			id = tonumber(string.sub(message,4))
		elseif string.sub(message, 1,9) == "!offsight" then
			rednet.send(id, {})
		end
	end
end

chat()