Moai:通过套接字对命令作出反应的图形

时间:2012-07-12 15:54:06

标签: sockets lua luasocket moai

我需要一个程序,可以根据我通过TCP发送给它的命令在屏幕上创建预定义的形状。 我正在尝试收听端口,以便我可以使用它们。在等待命令之前(通过网络)我有创建方块所需的命令(我计划通过网络命令更改其属性)

问题是它不是应该创建任何图形或打开窗口..

require "socket"
require "mime"
require "ltn12"

host = "localhost"
port = "8080"
server, error = socket.bind(host, port)
if not server then print("server: " .. tostring(error)) os.exit() end


screen=MOAISim.openWindow ( "test", 640, 640 )

viewport = MOAIViewport.new (screen)
viewport:setSize ( 640, 640 )
viewport:setScale ( 640, 640 )

layer = MOAILayer2D.new ()
layer:setViewport ( viewport )
MOAISim.pushRenderPass ( layer )

function fillSquare (x,y,radius,red,green,blue)
a = red/255
b = green/255
c = blue/255
MOAIGfxDevice.setPenColor ( a, b, c) -- green
MOAIGfxDevice.setPenWidth ( 2 )
MOAIDraw.fillCircle ( x, y, radius, 4 ) -- x,y,r,steps
end
function onDraw (  )

fillSquare(0,64,64, 0,0,255)
end

scriptDeck = MOAIScriptDeck.new ()
scriptDeck:setRect ( -64, -64, 64, 64 )
scriptDeck:setDrawCallback (    onDraw)


prop = MOAIProp2D.new ()
prop:setDeck ( scriptDeck )
layer:insertProp ( prop )


while 1 do
   print("server: waiting for client command...")
   control = server:accept()
    command, error = control:receive()
    print(command,error)
    error = control:send("hi from Moai\n")

end

它正在等待来自客户端的命令在control = server:accept()但它没有打开它应该的图形窗口..是否有任何命令强制它打开或渲染

谢谢

3 个答案:

答案 0 :(得分:2)

MOAI不会在单独的线程中运行脚本。阻止调用(server:accept)或永久循环(while true do)将阻止您的MOAI应用程序,它会在您的脚本中永久存在时冻结。

所以你必须做两件事:

  1. 使用非阻止呼叫。在这种情况下,您需要将服务器的超时设置为0.这使得server:accept立即返回。检查它的返回值,看看你是否有连接。
  2. 将你的while循环放在一个协程中,每次迭代产生一次。
  3. 你需要以同样的方式处理客户端,在协程循环中使用非阻塞调用。

    function clientProc(client)
      print('client connected:', client)
    
      client:settimeout(0) -- make client socket reads non-blocking
    
      while true do
        local command, err = client:receive('*l')
        if command then 
          print('received command:', command) 
          err = client:send("hi from Moai\n")
        elseif err == 'closed' then
          print('client disconnected:', client)
          break
        elseif err ~= 'timeout' then
          print('error: ', err)
          break
        end
        coroutine.yield()
      end
      client:close()
    end
    
    function serverProc()
        print("server: waiting for client connections...")
    
        server:settimeout(0) -- make server:accept call non-blocking
    
        while true do
            local client = server:accept()
            if client then
                MOAICoroutine.new():run(clientProc, client)
            end
            coroutine.yield()
        end
    end
    
    MOAICoroutine.new():run(serverProc)
    

答案 1 :(得分:0)

设置服务器套接字的超时,因为accept是阻塞调用。

server:settimeout(1)

答案 2 :(得分:0)

谢谢泥...我发现在你回复之前,以下的协同工作

function threadFunc()
    local action
    while 1 do

    stat, control = server:accept()
    --print(control,stat)
    while 1 do
        if stat then
            command, error = stat:receive()
            print("Comm: ", command, error)
            if command then

                stat:close()
                print("server: closing connection...")
                break
            else
                break
            end
            --[[
          error = stat:send("hi")
          if error then
              stat:close()
              print("server: closing connection...",error)
              break
          end  ]] --
        else
            break
        end

    end
    coroutine.yield()
end
end

虽然

非常有帮助