pyglet 中的平滑运动

Question

因此，在我们的游戏使用 Tkinter 之后，我们决定转向 Pyglet。但是我遇到的问题之一是运动，在 Tkinter 中我能够制作一个平滑的运动系统，但在 pyglet 中我所能做的就是让角色以一种紧张的方式移动。

import pyglet
from pyglet.window import key, Window
from pyglet import clock
from threading import Timer

X = 5 #Speed of the player
w = 0 #Controls +y movement
a = 0 #Controls -x movement
s = 0 #Controls -y movement
d = 0 #Controls +x movement

window = Window(width = 500, height = 500) #Defines window

MainChar = pyglet.image.load("Mainchar.png") #Loads the Mainchar.png
Player = pyglet.sprite.Sprite(MainChar, x = 0, y = 0) #Makes MainChar into a sprite

@window.event
def on_key_press(symbol, modifiers): #Looks for a keypress
    print("keypress")
    if symbol == key.W:
        global w
        global a
        global s
        global d
        w = True
    elif symbol == key.A:
        a = True
    elif symbol == key.S:
        s = True
    elif symbol == key.D:
        d = True

@window.event
def on_key_release(symbol, modifiers):
    print("keyup")
    if symbol == key.W:
        w = False
    elif symbol == key.A:
        a = False
    elif symbol == key.S:
        s = False
    elif symbol == key.D:
        d = False
@window.event
def moveT():
    print("cycle")
    def moveD():
        if w == True:
            Player.y += 0.1
        elif a == True:
            Player.x -= 5
        elif s == True:
            Player.y -= 5
        elif d == True:
            Player.x += 5
        moveT()
    moveTimer = Timer(0.01, moveD)
    moveTimer.start()

@window.event
def on_draw():
    window.clear()
    Player.draw()

moveT()
pyglet.app.run()

我将 w、a、s 和 d 作为布尔值的原因是这样我可以通过按住键而不是按键来移动角色。

任何帮助都会很棒，提前致谢！

Answer 1

问题是您使用了 python threading。这不会触发 pyglet window 被重绘。
您必须使用 pyglet.clock 并安排一个函数在每次时钟滴答时调用。这会导致 pyglet window 也被更新并触发 on_draw() 事件。例如：

@window.event
def moveT(dt):

    if w == True:
        Player.y += 0.1
    elif s == True:
        Player.y -= 5

    if a == True:
        Player.x -= 5
    elif d == True:
        Player.x += 5

pyglet.clock.schedule_interval(moveT, 1 / 60)

此外 w、a、s 和 d 也必须在 on_key_release 中声明 global。

import pyglet
from pyglet.window import key, Window
from pyglet import clock

X = 5 #Speed of the player
w, a, s, d = False, False, False, False 

window = Window(width = 500, height = 500) #Defines window

MainChar = pyglet.image.load("Mainchar.png")
Player = pyglet.sprite.Sprite(MainChar, x = 0, y = 0)

@window.event
def on_key_press(symbol, modifiers): #Looks for a keypress
    global w, a, s, d
    if symbol == key.W:
        w = True
    elif symbol == key.A:
        a = True
    elif symbol == key.S:
        s = True
    elif symbol == key.D:
        d = True

@window.event
def on_key_release(symbol, modifiers):
    global w, a, s, d
    if symbol == key.W:
        w = False
    elif symbol == key.A:
        a = False
    elif symbol == key.S:
        s = False
    elif symbol == key.D:
        d = False

@window.event
def moveT(dt):

    if w == True:
        Player.y += 0.1
    elif s == True:
        Player.y -= 5

    if a == True:
        Player.x -= 5
    elif d == True:
        Player.x += 5

@window.event
def on_draw():
    window.clear()
    Player.draw()

pyglet.clock.schedule_interval(moveT, 1 / 60)
pyglet.app.run()

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