Pygame 流畅的动作

Question

我怎样才能让 pygame 矩形平滑移动？就像我将 x 位置更新为 2 它看起来很平滑但是如果我将它更新为更大的数字如 25 它会传送到该位置。另外，如果可能的话，这也适用于小数吗？

Visual Representation

import pygame
import math

GREEN = (20, 255, 140)
GREY = (210, 210 ,210)
WHITE = (255, 255, 255)
RED = (255, 0, 0)
PURPLE = (255, 0, 255)
BLUE = (0, 0, 255)
BLACK = (0, 0, 0)

class Dot(pygame.sprite.Sprite):
    # This class represents a car. It derives from the "Sprite" class in Pygame.
    def __init__(self, color, width, height):

        # Call the parent class (Sprite) constructor
        super().__init__()

        # Pass in the color of the car, and its x and y position, width and height.
        # Set the background color and set it to be transparent
        self.image = pygame.Surface([width, height])
        self.image.fill(WHITE)
        self.image.set_colorkey(WHITE)
        self.color = color
        self.width = width
        self.height = height
        pygame.draw.rect(self.image, self.color, [0, 0, self.width, self.height])
        self.rect = self.image.get_rect()

Answer 1

How can I get a pygame rect to move smoothly?

如果您的矩形必须每帧移动 25px，那么在中间位置绘制矩形就没有意义。显示每帧更新一次，在中间位置绘制矩形完全没有意义。
可能你每秒必须减少帧数。在那种情况下，您必须增加帧率，并且可以减少运动。请注意，人眼每秒只能处理一定数量的图像。诀窍在于您生成了足够多的帧，这样运动对于人眼来说就显得平滑了。

pygame.Rect 只能存储整数值。如果你想以非常高的帧率和浮动精度进行操作，那么你必须将对象的位置存储在单独的浮点属性中。将圆角位置同步到矩形属性。请注意，您不能在 window 的 "half" 像素上绘制（至少在 pygame 中）。

例如：

class Dot(pygame.sprite.Sprite):
    # This class represents a car. It derives from the "Sprite" class in Pygame.
    def __init__(self, color, x, y, width, height):

        # Call the parent class (Sprite) constructor
        super().__init__()

        # Pass in the color of the car, and its x and y position, width and height.
        # Set the background color and set it to be transparent
        self.x = x
        self.y = y
        self.image = pygame.Surface([width, height])
        self.image.fill(self.color)
        self.rect = self.image.get_rect(center = (round(x), round(y)))

    def update(self):
        # update position of object (change `self.x`,  ``self.y``)
        # [...]

        # synchronize position to `.rect`
        self.rect.center = (round(x), round(y))

Pygame 流畅的动作

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