Question

我一直试图为绘图元素添加动画但没有成功。我可以为导入的图像设置动画，但是当我尝试为pygame生成的图形设置动画时，它们仍然是静态的。

编辑：通过“动画”我的意思是“移动”。就像在圆圈中沿x和y方向移动一样。

这是我的代码：

import pygame, sys
from pygame.locals import *

pygame.init()

FPS = 60
WIDTH = 600
HEIGHT = 500
fpsClock = pygame.time.Clock()
DISPLAYSURF = pygame.display.set_mode((WIDTH, HEIGHT), 0, 32)
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
ballx = WIDTH / 2
bally = HEIGHT / 2
ball_vel = [1, 1]
ball_pos =(ballx, bally)
RADIUS = 20

# Game Loop:
while True:
    # Check for quit event
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()

    # Erase the screen (I have tried with and without this step)
    DISPLAYSURF.fill(BLACK)

    # Update circle position
    ballx += ball_vel[0]
    bally += ball_vel[1]

    # Draw Circle (I have tried with and without locks/unlocks)
    DISPLAYSURF.lock()
    pygame.draw.circle(DISPLAYSURF, WHITE, ball_pos, RADIUS, 2)
    DISPLAYSURF.unlock()

    # Update the screen
    pygame.display.update()
    fpsClock.tick(FPS)

我已尝试使用和不使用锁定/解锁显示器表面（如文档所示）。在更新之前我已尝试过擦除和不擦除屏幕（正如一些教程所示）。我无法让它发挥作用。

我做错了什么？你如何为绘图元素设置动画？

感谢您的时间。

Answer 1

您没有更新ball_pos元组：您将其设置为起始坐标：

ballx = WIDTH / 2
bally = HEIGHT / 2
ball_vel = [1, 1]
ball_pos =(ballx, bally)

你稍后更新了ballx和bally，但是再也没有将ball_pos再次设置为ballx和bally。在while循环中，在设置ballx和bally后，执行以下操作：

ball_pos = (ballx,bally)

Answer 2

import pygame, sys
from pygame.locals import *

pygame.init()

FPS = 60
WIDTH = 600
HEIGHT = 500
fpsClock = pygame.time.Clock()
DISPLAYSURF = pygame.display.set_mode((WIDTH, HEIGHT), 0, 32)
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
ballx = WIDTH / 2
bally = HEIGHT / 2
ball_vel = [1, 1]
ball_pos =(ballx, bally)
RADIUS = 20

# Game Loop:
while True:
    # Check for quit event
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()

    # Erase the screen (I have tried with and without this step)
    DISPLAYSURF.fill(BLACK)

    # Update circle position
    ballx += ball_vel[0]
    bally += ball_vel[1]
    ball_pos =(ballx, bally)

    # Draw Circle (I have tried with and without locks/unlocks)
    pygame.draw.circle(DISPLAYSURF, WHITE, ball_pos, RADIUS, 2)

    # Update the screen
    pygame.display.flip()
    fpsClock.tick(FPS)

flip = update（）

如何在pygame（运动）中制作图纸动画

2 个答案: