通过将操纵杆值发送到数组来通过套接字流式传输 pygame 操纵杆输入

Question

我正在尝试构建一个机器人，它将通过在 python 中使用套接字和操纵杆来控制。我一直在尝试将 Pygame 的示例代码中的操纵杆读数发送到一个数组中，但是当我打印数组时，我在移动轴并按下按钮后得到了空白值。这些值出现在数组之外，但显然没有存储在数组中。下面的代码将在用于向机器人传输命令的计算机上运行。我已经引用了会导致看不到服务器错误的行。请帮我弄清楚为什么我不能从操纵杆中获取读数到一个数组中，并请发布代码 sn-ps，而不仅仅是单词描述。

import socket      #send data between server and client
import os          #gain control of command prompt features
import keyboard    #read keystrokes
import pygame       #Read Joystick data


os.system('title client')  #rename command prompt
os.system('cls')           #clear command prompt screen

# client = socket.socket()   #constructor

# hostname = '127.0.0.1'  #server ip

# port = 8080   #server open communication port

# client.connect((hostname,port))  #create connection



# Define some colors.
BLACK = pygame.Color('black')
WHITE = pygame.Color('white')


# This is a simple class that will help us print to the screen.
# It has nothing to do with the joysticks, just outputting the
# information.
class TextPrint(object):
    def __init__(self):
        self.reset()
        self.font = pygame.font.Font(None, 20)

    def tprint(self, screen, textString):
        textBitmap = self.font.render(textString, True, BLACK)
        screen.blit(textBitmap, (self.x, self.y))
        self.y += self.line_height

    def reset(self):
        self.x = 10
        self.y = 10
        self.line_height = 15

    def indent(self):
        self.x += 10

    def unindent(self):
        self.x -= 10


pygame.init()

# Set the width and height of the screen (width, height).
screen = pygame.display.set_mode((500, 700))

pygame.display.set_caption("My Game")

# Loop until the user clicks the close button.
done = False

# Used to manage how fast the screen updates.
clock = pygame.time.Clock()

# Initialize the joysticks.
pygame.joystick.init()

# Get ready to print.
textPrint = TextPrint()

message = []

# -------- Main Program Loop -----------
while not done:
    #
    # EVENT PROCESSING STEP
    #
    # Possible joystick actions: JOYAXISMOTION, JOYBALLMOTION, JOYBUTTONDOWN,
    # JOYBUTTONUP, JOYHATMOTION
    for event in pygame.event.get(): # User did something.
        if event.type == pygame.QUIT: # If user clicked close.
            done = True # Flag that we are done so we exit this loop.
        elif event.type == pygame.JOYBUTTONDOWN:
            print("Joystick button pressed.")
        elif event.type == pygame.JOYBUTTONUP:
            print("Joystick button released.")

    #
    # DRAWING STEP
    #
    # First, clear the screen to white. Don't put other drawing commands
    # above this, or they will be erased with this command.
    screen.fill(WHITE)
    textPrint.reset()

    # Get count of joysticks.
    joystick_count = pygame.joystick.get_count()

    textPrint.tprint(screen, "Number of joysticks: {}".format(joystick_count))
    textPrint.indent()

    # For each joystick:
    for i in range(joystick_count):
        joystick = pygame.joystick.Joystick(i)
        joystick.init()

        try:
            jid = joystick.get_instance_id()
        except AttributeError:
            # get_instance_id() is an SDL2 method
            jid = joystick.get_id()
        textPrint.tprint(screen, "Joystick {}".format(jid))
        textPrint.indent()

        # Get the name from the OS for the controller/joystick.
        name = joystick.get_name()
        textPrint.tprint(screen, "Joystick name: {}".format(name))

        # try:
        #     guid = joystick.get_guid()
        # except AttributeError:
        #     # get_guid() is an SDL2 method
        #     pass
        # else:
        #     textPrint.tprint(screen, "GUID: {}".format(guid))

        # Usually axis run in pairs, up/down for one, and left/right for
        # the other.
        axes = joystick.get_numaxes()
        textPrint.tprint(screen, "Number of axes: {}".format(axes))
        textPrint.indent()

        for i in range(axes):
            axis = joystick.get_axis(i)
            textPrint.tprint(screen, "Axis {} value: {:>6.3f}".format(i, axis))
            message.append(joystick.get_axis(i))
        textPrint.unindent()

        buttons = joystick.get_numbuttons()
        textPrint.tprint(screen, "Number of buttons: {}".format(buttons))
        textPrint.indent()

        for i in range(buttons):
            button = joystick.get_button(i)
            textPrint.tprint(screen, "Button {:>2} value: {}".format(i, button))
            message.append(button)
        textPrint.unindent()

        hats = joystick.get_numhats()
        textPrint.tprint(screen, "Number of hats: {}".format(hats))
        textPrint.indent()

        # Hat position. All or nothing for direction, not a float like
        # get_axis(). Position is a tuple of int values (x, y).
        for i in range(hats):
            hat = joystick.get_hat(i)
            textPrint.tprint(screen, "Hat {} value: {}".format(i, str(hat)))
        textPrint.unindent()

        textPrint.unindent()

        
        #Display values recorded in array
        for i in message:
        value = message[int(i)]
        textPrint.tprint(screen,"values: {}".format(value))

    #
    # ALL CODE TO DRAW SHOULD GO ABOVE THIS COMMENT
    #

    # Go ahead and update the screen with what we've drawn.
    pygame.display.flip()

    # Limit to 20 frames per second.
    clock.tick(20)

# Close the window and quit.
# If you forget this line, the program will 'hang'
# on exit if running from IDLE.
pygame.quit()




    # Send to server
    # x = keyboard.read_key()  #read key on keyboard
    # client.send(x.encode())  #send recorded key to server
    # print("You Pressed ", x) #print on client screen the key they pressed 

Answer 1

问题解决了！问题是由于“消息”数组不断添加到自身而导致的无限循环，因为它在循环之外。通过在“while not done:”循环中声明数组，它会自行擦除并在需要的地方添加值。代码现在可以工作了。现在我唯一担心的是值“hat”不会引起问题，因为它返回 2 个值而不是 1 个。我会将这个案例标记为已解决！固定代码如下，以防有人想知道我到目前为止的位置！

import socket      #send data between server and client
import os          #gain control of command prompt features
import keyboard    #read keystrokes
import pygame       #Read Joystick data
import array


os.system('title client')  #rename command prompt
os.system('cls')           #clear command prompt screen

# client = socket.socket()   #constructor

# hostname = '127.0.0.1'  #server ip

# port = 8080   #server open communication port

# client.connect((hostname,port))  #create connection



# Define some colors.
BLACK = pygame.Color('black')
WHITE = pygame.Color('white')


# This is a simple class that will help us print to the screen.
# It has nothing to do with the joysticks, just outputting the
# information.
class TextPrint(object):
    def __init__(self):
        self.reset()
        self.font = pygame.font.Font(None, 20)

    def tprint(self, screen, textString):
        textBitmap = self.font.render(textString, True, BLACK)
        screen.blit(textBitmap, (self.x, self.y))
        self.y += self.line_height

    def reset(self):
        self.x = 10
        self.y = 10
        self.line_height = 15

    def indent(self):
        self.x += 10

    def unindent(self):
        self.x -= 10


pygame.init()

# Set the width and height of the screen (width, height).
screen = pygame.display.set_mode((500, 700))

pygame.display.set_caption("My Game")

# Loop until the user clicks the close button.
done = False

# Used to manage how fast the screen updates.
clock = pygame.time.Clock()

# Initialize the joysticks.
pygame.joystick.init()

# Get ready to print.
textPrint = TextPrint()

#message = array.array('d',[])

# -------- Main Program Loop -----------
while not done:
    



    #clear message
    message = array.array('d',[])
    #
    # EVENT PROCESSING STEP
    #
    # Possible joystick actions: JOYAXISMOTION, JOYBALLMOTION, JOYBUTTONDOWN,
    # JOYBUTTONUP, JOYHATMOTION
    for event in pygame.event.get(): # User did something.
        if event.type == pygame.QUIT: # If user clicked close.
            done = True # Flag that we are done so we exit this loop.
        elif event.type == pygame.JOYBUTTONDOWN:
            print("Joystick button pressed.")
        elif event.type == pygame.JOYBUTTONUP:
            print("Joystick button released.")

    #
    # DRAWING STEP
    #
    # First, clear the screen to white. Don't put other drawing commands
    # above this, or they will be erased with this command.
    screen.fill(WHITE)
    textPrint.reset()

    # Get count of joysticks.
    joystick_count = pygame.joystick.get_count()

    textPrint.tprint(screen, "Number of joysticks: {}".format(joystick_count))
    textPrint.indent()

    # For each joystick:
    for i in range(joystick_count):
        joystick = pygame.joystick.Joystick(i)
        joystick.init()

        try:
            jid = joystick.get_instance_id()
        except AttributeError:
            # get_instance_id() is an SDL2 method
            jid = joystick.get_id()
        textPrint.tprint(screen, "Joystick {}".format(jid))
        textPrint.indent()

        # Get the name from the OS for the controller/joystick.
        name = joystick.get_name()
        textPrint.tprint(screen, "Joystick name: {}".format(name))

        # try:
        #     guid = joystick.get_guid()
        # except AttributeError:
        #     # get_guid() is an SDL2 method
        #     pass
        # else:
        #     textPrint.tprint(screen, "GUID: {}".format(guid))

        # Usually axis run in pairs, up/down for one, and left/right for
        # the other.
        axes = joystick.get_numaxes()
        textPrint.tprint(screen, "Number of axes: {}".format(axes))
        textPrint.indent()

        for i in range(axes):
            axis = joystick.get_axis(i)
            textPrint.tprint(screen, "Axis {} value: {:>6.3f}".format(i, axis))
            message.append(joystick.get_axis(i))
        textPrint.unindent()

        buttons = joystick.get_numbuttons()
        textPrint.tprint(screen, "Number of buttons: {}".format(buttons))
        textPrint.indent()

        for i in range(buttons):
            button = joystick.get_button(i)
            textPrint.tprint(screen, "Button {:>2} value: {}".format(i, button))
            message.append(button)
        textPrint.unindent()

        hats = joystick.get_numhats()
        textPrint.tprint(screen, "Number of hats: {}".format(hats))
        textPrint.indent()

        # Hat position. All or nothing for direction, not a float like
        # get_axis(). Position is a tuple of int values (x, y).
        for i in range(hats):
            hat = joystick.get_hat(i)
            textPrint.tprint(screen, "Hat {} value: {}".format(i, str(hat)))
        textPrint.unindent()

        textPrint.unindent()

        i = range(len(message))

        textPrint.tprint(screen, "array length {}".format(i))


        for i in range(len(message)):
            value = message[int(i)]
            textPrint.tprint(screen, "value {}: {}".format(i, value))

    #
    # ALL CODE TO DRAW SHOULD GO ABOVE THIS COMMENT
    #

    # Go ahead and update the screen with what we've drawn.
    pygame.display.flip()

    # Limit to 20 frames per second.
    clock.tick(20)

# Close the window and quit.
# If you forget this line, the program will 'hang'
# on exit if running from IDLE.
pygame.quit()




    # Send to server
    # x = keyboard.read_key()  #read key on keyboard
    # client.send(x.encode())  #send recorded key to server
    # print("You Pressed ", x) #print on client screen the key they pressed