python - 在 pygame 中旋转图像，使其看起来像在旋转

Question

我正在创建一个游戏，玩家的攻击方式是旋转 360 度。我已经做到了，所以它确实做到了这一点，但是我遇到的问题是它每次旋转时都会回到原始图像。关于如何使图像不断旋转的任何想法

这是我的旋转代码片段:

self.rotate += 10
self.image_type = self.image
self.image = pygame.transform.rotate(self.image_type, self.rotate)

更新

这是我的大部分代码。我的程序分为两部分；主循环和类程序

我的类(class)代码:

import pygame
from pygame import *
import random
import time
import math as maths
pygame.init()

class character(pygame.sprite.Sprite):
    def __init__(self):
        super().__init__()
        self.image1 = pygame.image.load("Knight_front.png").convert_alpha()
        self.image_type = self.image1
        self.image = self.image1
        self.rect = self.image.get_rect()
        self.rect.x, self.rect.y = 300,215
        self.st = 0
        self.dir = 0
        self.stab = False
        self.rotate = 0

    def update(self,keypress):
        self.prevx,self.prevy = self.rect.x,self.rect.y
        if keypress[K_w]:
            self.image = self.image_type
            self.rect.y -= 3
            self.dir = 0
        if keypress[K_s]:
            self.image = pygame.transform.rotate(self.image_type, 180)
            self.rect.y += 3
            self.dir = 180
        if keypress[K_a]:
            self.image = pygame.transform.rotate(self.image_type, 90)
            self.rect.x -= 3
            self.dir = 90
        if keypress[K_d]:
            self.image = pygame.transform.rotate(self.image_type, -90)
            self.rect.x += 3
            self.dir = -90
        if keypress[K_SPACE] and self.stab == False and time.time()>self.st+0.5:
            self.rotate += 10
            self.image_type = self.image
            self.image = pygame.transform.rotate(self.image_type, self.rotate)
            self.st = time.time()
            self.stab = True
        if time.time() > self.st + 0.25 and self.stab == True:
            self.image_type = self.image1
            self.image = pygame.transform.rotate(self.image_type, self.dir)
            self.stab = False
            if self.rotate == 360:
                self.rotate = 0

我的主循环代码:

import pygame
from pygame import *

width, height = 640, 480
screen = pygame.display.set_mode((width,height))#,FULLSCREEN)

from classes import *
import random

spriteList = pygame.sprite.Group()
player = character()
spriteList.add(player)


Clock = pygame.time.Clock()

    while True:

        keypress = pygame.key.get_pressed()
        screen.fill((255,255,255))
        spriteList.draw(screen)
        player.update(keypress)

        pygame.event.pump()
        Clock.tick(30)
        pygame.display.update()

        for event in pygame.event.get():
            if event.type == QUIT:
                pygame.quit()
                quit()
            if keypress[K_ESCAPE]:
                pygame.quit()

Answer 1

如果按下空格键，我会将 self.stab 变量设置为 True，然后增加角度 (self.rotate) ，旋转图像并每帧获取一个新的矩形，当超过 360 度时，重置 self.stab 和 self.rotate 变量。

if keypress[K_SPACE]:
    self.stab = True

if self.stab:
    self.rotate += 10
    if self.rotate >= 360:
        self.rotate = 0
        self.stab = False
    # Rotate the image and get a new rect with the old center.
    self.image = pygame.transform.rotate(self.image_type, self.rotate)
    self.rect = self.image.get_rect(center=self.rect.center)