我已经在这个小游戏上工作了一段时间，我遇到了头疼。下面你可以看到“square1”和“square2”是用pygame绘制的。我想用图像替换它们，但它弄乱了我所做的碰撞事情。是否可以将加载的.png图像“转换”为rect对象？
import pygame
import os
from test_menu import drawmenu
from game_over import player1wins
from game_over import player2wins
from game_over import tie
pygame.init()
while True:
screen_size = (1080, 400)
screen = pygame.display.set_mode(screen_size)
background = (255,255,255)
image = pygame.image.load("background(1).png")
imagerect = image.get_rect()
wall_left = pygame.Rect(0,0,1,950)
wall_right = pygame.Rect(1080,0,1,950)
square1 = pygame.Rect(750, 350, 20, 20)
square2 = pygame.Rect(330, 350, 20, 20)
x_movement = 0
y_movement = 0
x2_movement = 0
y2_movement = 0
accelx1 = 0
accely1 = 0
accelx2 = 0
accely2 = 0
jumping = False
jumping2 = False
def health_bars(player1_health, player2_health):
if player1_health > 75:
player1_health_color = (62, 219, 41)
elif player1_health > 50:
player1_health_color = (239, 212, 9)
else:
player1_health_color = (239, 9, 9)
if player2_health > 75:
player2_health_color = (62, 219, 41)
elif player2_health > 50:
player2_health_color = (239, 212, 9)
else:
player2_health_color = (239, 9, 9)
pygame.draw.rect(screen, player1_health_color, (70, 50, player1_health, 25))
pygame.draw.rect(screen, player2_health_color, (900, 50, player2_health, 25))
player1_health = int(100)
player2_health = int(100)
drawmenu()
while True:
screen.fill(background)
screen.blit(image, imagerect)
pygame.display.update()
pygame.draw.rect(screen, (255,0,0), square1)
pygame.draw.rect(screen, (0,0,255), square2)
pygame.draw.rect(screen, (0,0,0), wall_left)
pygame.draw.rect(screen, (0,0,0), wall_right)
health_bars(player1_health, player2_health)
pygame.display.update()
events = pygame.event.get()
for event in events:
if event.type == pygame.QUIT:
exit()
keys_pressed = pygame.key.get_pressed()
pygame.time.delay(20)
#MOVEMENT P1
if keys_pressed[pygame.K_LEFT] == 1:
x_movement += -1
elif keys_pressed[pygame.K_RIGHT] == 1:
x_movement += 1
else:
x_movement = 0
#MOVEMENT P2
if keys_pressed[pygame.K_a] == 1:
x2_movement += -1
elif keys_pressed[pygame.K_d] == 1:
x2_movement += 1
else:
x2_movement = 0
#MAX SPEED P1
if x_movement < -7:
x_movement = -7
if x_movement > 7:
x_movement = 7
if y_movement < -7:
y_movement = -7
if y_movement > 7:
y_movement = 7
#MAX SPEED P2
if x2_movement < -7:
x2_movement = -7
if x2_movement > 7:
x2_movement = 7
if y2_movement < -7:
y2_movement = -7
if y2_movement > 7:
y2_movement = 7
#COLLISION (WALL) P1
if square1.colliderect(wall_left):
player2_health -= 0.5
x_movement = 0
y_movement = 0
if keys_pressed[pygame.K_RIGHT] == 1:
x_movement += 1
if square1.colliderect(wall_right):
player2_health -= 0.5
x_movement = 0
y_movement = 0
if keys_pressed[pygame.K_LEFT] == 1:
x_movement += -1
#COLLISION (WALL) P2
if square2.colliderect(wall_left):
player1_health -= 0.5
x2_movement = 0
y2_movement = 0
if keys_pressed[pygame.K_d] == 1:
x2_movement += 1
if square2.colliderect(wall_right):
player1_health -= 0.5
x2_movement = 0
y2_movement = 0
if keys_pressed[pygame.K_a] == 1:
x2_movement += -1
#COLLISION (ATTACK) P1
if square1.colliderect(square2) and keys_pressed[pygame.K_g] == 1:
player2_health -= 1
#COLLISION (ATTACK) P2
if square2.colliderect(square1) and keys_pressed[pygame.K_p] == 1:
player1_health -= 1
#JUMPING P1
if keys_pressed[pygame.K_w] == 1:
if jumping2 == False:
jumping2 = True
y2_movement = -30
accely2 = 1
square2 = square2.move(x2_movement, y2_movement)
x2_movement += accelx2
y2_movement += accely2
if jumping2 == True:
if square2.y >= 350:
jumping2 = False
square2.y = 350
y2_movement = 0
accely2 = 0
#JUMPING P2
if keys_pressed[pygame.K_UP] == 1:
if jumping == False:
jumping = True
y_movement = -30
accely1 = 1
square1 = square1.move(x_movement, y_movement)
x_movement += accelx1
y_movement += accely1
if jumping == True:
if square1.y >= 350:
jumping = False
square1.y = 350
y_movement = 0
accely1 = 0
pygame.display.update()
pygame.time.delay(20)
if player2_health == 0 and player1_health !=0:
pygame.time.delay(400)
player1wins()
pygame.time.delay(3000)
drawmenu()
break
elif player1_health == 0 and player2_health !=0:
pygame.time.delay(400)
player2wins()
pygame.time.delay(3000)
drawmenu()
break
if player1_health == 0 and player2_health == 0:
pygame.time.delay(400)
tie()
pygame.time.delay(3000)
drawmenu()
break
答案 0 :(得分：2)
获取具有图像/表面尺寸的矩形的标准方法是调用曲面的get_rect方法。
import pygame as pg
pg.init()
screen = pg.display.set_mode((640, 480))
clock = pg.time.Clock()
# Use the convert or convert_alpha methods to improve the performance.
IMAGE = pg.image.load('an_image.png').convert_alpha()
rect = IMAGE.get_rect() # A rect with the dimensions of the image.
# Set the position of the rect.
rect.x = 100
rect.y = 200
done = False
while not done:
for event in pg.event.get():
if event.type == pg.QUIT:
done = True
keys = pg.key.get_pressed()
# Move the rect.
if keys[pg.K_RIGHT]:
rect.x += 2
elif keys[pg.K_LEFT]:
rect.x -= 2
# Draw everything.
screen.fill((30, 30, 30))
# Just pass the rect as the destination argument.
screen.blit(IMAGE, rect)
pg.display.flip()
clock.tick(30)
pg.quit()
您还可以使用其他rect attributes来设置其位置：
x,y
top, left, bottom, right
topleft, bottomleft, topright, bottomright
midtop, midleft, midbottom, midright
center, centerx, centery
我实际上将精灵/对象的位置存储在一个向量中，因为它允许更精确的移动（rects只能存储整数和截断浮点数）。要移动对象，我首先将速度（另一个向量）添加到它，然后将rect的center或topleft属性设置为新的位置向量。仍然需要矩形作为blit位置和碰撞检测。以下是精灵模板的示例：
class Player(pg.sprite.Sprite):
def __init__(self, pos):
super().__init__()
self.image = IMAGE
self.rect = self.image.get_rect(center=pos)
self.vel = Vector2(0, 0)
self.pos = Vector2(pos)
def update(self):
self.pos += self.vel
self.rect.center = self.pos
答案 1 :(得分：1)
我不知道可以这样做的方法。但是，您可以保留一个Surface对象来渲染图像，另一个Rect对象来处理所有碰撞检测业务。
这很常见。
怎么做：
创建Rect对象。
创建Surface对象。
加载.png文件并将其blit到您刚刚创建的Surface上。
确保Rect对象和Surface对象的x和y值在每个帧的末尾都相同。
我已经提供了一些示例代码来帮助您入门。我注释了代码加载图像但是。
使用您自己的图片：
将图像文件复制到所需的目录中。 （如果有疑问，请选择脚本目录）
获取正确的路径名称并在下面的代码中使用。
现在，您可以使用Rect进行碰撞检测和移动，并且始终会在Rect所在的位置绘制图像曲面。
注意：这种方法通常以面向对象的方式完成。
我希望这个答案对您有所帮助，如果您有任何其他问题，请随时在下面发表评论！
示例代码
# create Rects
square1 = pygame.Rect(100, 100, 100, 100)
square2 = pygame.Rect(100, 300, 100, 100)
# create the image surfaces
img = pygame.Surface((100, 100))
image_file = pygame.image.load("path/to/image_file")
img.blit(image_file, [0, 0])
img2 = pygame.Surface((100,100))
image_file2 = pygame.image.load("path/to/image_file")
img.blit(image_file2, [0, 0])
将这些Surface blit到屏幕上：
# draw the image Surfaces
screen.blit(img, [square1.x, square1.y])
screen.blit(img2, [square2.x, square2.y])