如何在pygame中调整图像的大小以达到屏幕的顶部/底部？

Question

我正在翻拍pygame中的flappy bird，但以星球大战为主题。我已经完成了艺术和游戏的一般格式，但现在我需要调整的细节。我一直在切换数字，试图让光剑完全到达屏幕的顶部和底部，因为目前有些间隙不是预期的空间通过。

import pygame
from random import randint
from pygame.locals import *

#Define Colors - RGB
black = (0,0,0)
white = (255,255,255)
green = (0,255,0)
red = (255,0,0)

pygame.init()

#Screen Size
size = 700,500
screen = pygame.display.set_mode(size)
pygame.display.set_caption("Flappy Bird in Python")

done = False
clock = pygame.time.Clock()

def ball(x,y):
    #Radius of 20 px
    ballImg1 = pygame.image.load('PlayerFrame1.png')
    ballImg1 = pygame.transform.scale(ballImg1,(50,50))
    screen.blit(ballImg1, (x,y))
    ballImg2 = pygame.image.load('PlayerFrame2.png')
    ballImg2 = pygame.transform.scale(ballImg2,(50,50))
    screen.blit(ballImg2, (x,y))

def gameover():
    font = pygame.font.SysFont(None,55)
    text = font.render("Game Over! Try Again?",True,red)
    screen.blit(text, [150,250])

def obstacle(xloc,yloc,xsize,ysize):
    pipe = pygame.image.load('blade.png')
    pipe1 = pygame.transform.scale(pipe,(xsize,ysize))
    pipe2 = pygame.transform.scale(pipe,(xsize,500))
    screen.blit(pipe1,[xloc,yloc,xsize,ysize])
    screen.blit(pipe2,[xloc,int(yloc+ysize+space),xsize,ysize+500]))

#If the ball is between 2 points on the screen, increment score
def Score(score):
    font = pygame.font.SysFont(None,55)
    text = font.render("Score: "+str(score),True,white)
    screen.blit(text, [0,0])

x = 350
y = 250
x_speed = 0
y_speed = 0
ground = 477
xloc = 700
yloc = 0
xsize = 70
ysize = randint(0,350)
#Size of space between 2 blocks
space = 150
obspeed = 2
score = 0


while not done:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            done = True

        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_UP:
                y_speed = -5

        if event.type == pygame.KEYUP:
            if event.key == pygame.K_UP:
                y_speed = 4


    screen.fill(black)
    obstacle(xloc,yloc,xsize,ysize)
    ball(x,y)
    Score(score)

    y += y_speed
    xloc -= obspeed

    if y > ground:
        gameover()
        y_speed = 0
        obspeed = 0

    if x+20 > xloc and y-20 < ysize and x-15 < xsize+xloc:
        gameover()
        y_speed = 0
        obspeed = 0

    if x+20 > xloc and y+20 < ysize and x-15 < xsize+xloc:
        gameover()
        y_speed = 0
        obspeed = 0

    if xloc < -80:
        xloc = 700
        ysize = randint(0,350)

    if x > xloc and x < xloc+3:
        score = score + 1

    pygame.display.flip()
    clock.tick(60)

pygame.quit()

Answer 1

如果我理解您的变量名，可以在函数的第四行中尝试：

screen.blit(pipe,[xloc,int(yloc+space),xsize,ysize+500])