我想在一张图片周围绘制一个红色边框,但是不知道该怎么做。
我尝试了对Hero
精灵的图像进行填充,并将颜色键设置为红色self.image.set_colorkey(red)
,但这使得图像变得不可见。
在图像上绘制红色矩形只会完全填充它:pygame.draw.rect(self.image, red, [0, 0, width, height])
。
我只想要一个红色边框,以便于未来的碰撞检测。
main.py中的代码:
import pygame
from pygame import *
import sprites
from sprites import *
pygame.init()
width = 640
height = 480
color = (255, 255, 255) #white
x = 0
y = 0
speed = 3
screen = pygame.display.set_mode((width, height))
pygame.display.set_caption("Mushroom")
icon = pygame.image.load('icon.bmp')
pygame.display.set_icon(icon)
sprites_list = pygame.sprite.Group()
hero = Hero('mushroom.png', 48, 48)
hero.rect.x = 200;
hero.rect.y = 300;
sprites_list.add(hero)
running = True
clock = pygame.time.Clock()
while running:
sprites_list.update()
screen.fill((color))
sprites_list.draw(screen)
hero.draw(screen)
pygame.display.flip()
pygame.display.update()
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
key = pygame.key.get_pressed()
if key[pygame.K_LEFT]:
hero.left(speed)
if key[pygame.K_RIGHT]:
hero.right(speed)
if key[pygame.K_UP]:
hero.up(speed)
if key[pygame.K_DOWN]:
hero.down(speed)
clock.tick(60)
sprites.py中的代码:
import pygame
from pygame import *
red = (255, 0, 0)
class Hero(pygame.sprite.Sprite):
def __init__(self, color, width, height):
super().__init__()
self.image = pygame.image.load('mushroom.png')
self.image = pygame.Surface((width, height))
self.image.fill(red)
self.image.set_colorkey(red)
pygame.draw.rect(self.image, red, [0, 0, width, height])
self.rect = self.image.get_rect()
def draw(self, screen):
screen.blit(self.image, self.rect)
def right(self, pixels):
self.rect.x += pixels
def left(self, pixels):
self.rect.x -= pixels
def up(self, pixels):
self.rect.y -= pixels
def down(self, pixels):
self.rect.y += pixels
self.image.fill(red)
然后设置颜色键self.image.set_colorkey(red)
?这会使图像变得不可见。你是想让'mushroom.png'
图像的背景透明吗?还是想在图像周围画一个红色边框? - skrx