【发布时间】：2018-01-22 08:57:50
【问题描述】：
我目前正在制作一款自上而下的赛车游戏，需要一种方法来检测车辆何时跑完一圈。我选择通过在赛道周围添加图像来做到这一点，作为检查点，与赛道表面相匹配。驶过时，它们输出 true，所有输出都必须为 true 才能计算一圈。但是，我找不到检测车辆与图像之间碰撞的方法。
我尝试向车辆添加矩形并检查两辆车碰撞时是否可以产生输出，但我只是收到此错误：
AttributeError: 'pygame.Surface' object has no attribute 'rect'
有什么办法可以做到吗？我的代码如下所示。
import pygame
from pygame.locals import *
import math
import time
pygame.init()
F1image = pygame.image.load("F1image.png")
sportsimage = pygame.image.load("sportsimage.png")
bikeimage = pygame.image.load("bikeimage.png")
muscleimage = pygame.image.load("muscleimage.png")
truckimage = pygame.image.load("truckimage.png")
screen = pygame.display.set_mode((1280,720))
xpos = 280
xpos_2 = 280
ypos = 50
ypos_2 = 85
keys = [False, False, False, False]
keys_2 = [False, False, False, False]
direction = 0
direction_2 = 0
forward = 0
forward_2 = 0
class Background(pygame.sprite.Sprite):
def __init__(self, image_file, location):
pygame.sprite.Sprite.__init__(self)
self.image = pygame.image.load(image_file)
self.rect = self.image.get_rect()
self.rect.left, self.rect.top = location
BackGround = Background('track.png', [0,0])
class Vehicle:
'Base class for all vehicles (Cars and Motorbikes) in the game'
vehicleCount = 0
def __init__(self, max_speed, acceleration, turning_radius, image):
pygame.sprite.Sprite.__init__(self)
self.max_speed = max_speed
self.acceleration = acceleration
self.turning_radius = turning_radius
self.image = image
self.rect = self.image.get_rect()
Vehicle.vehicleCount = Vehicle.vehicleCount + 1
def displayAmount():
print ("Total number of Vehicle enteries: ", Vehicle.vehicleCount)
def displayVehicle(self):
print ("max speed: ", self.max_speed, "acceleration: ", self.acceleration, "turning radius: ", self.turning_radius)
def checkCollision(self, sprite1, sprite2):
col = pygame.sprite.collide_rect(sprite1, sprite2)
if col == True:
print ("True")
F1 = Vehicle(5.0, 0.1, 2.84, F1image)
sportscar = Vehicle(4.5, 0.2, 2.01, sportsimage)
bike = Vehicle(4.0, 0.15, 2.64, bikeimage)
musclecar = Vehicle(3.5, 0.25, 1.76, muscleimage)
truck = Vehicle(3.0, 0.3, 1.20, truckimage)
print (F1.max_speed)
player1choice = input("Input player 1 choice").lower()
player2choice = input("Input player 2 choice").lower()
if player1choice == ("f1"):
choice1 = F1
elif player1choice == ("sports"):
choice1 = sportscar
elif player1choice == ("muscle"):
choice1 = musclecar
elif player1choice == ("truck"):
choice1 = truck
else:
choice1 = bike
if player2choice == ("f1"):
choice2 = F1
elif player2choice == ("sports"):
choice2 = sportscar
elif player2choice == ("muscle"):
choice2 = musclecar
elif player2choice == ("truck"):
choice2 = truck
else:
choice2 = bike
running = True
while running:
pygame.display.set_caption("Speed Wars")
WHITE = (255, 255, 255)
screen.fill(WHITE)
screen.blit(BackGround.image, BackGround.rect)
#Vehicle 1
if keys[0] == True:
direction += (choice1).turning_radius
if keys[1] == True:
direction -= (choice1).turning_radius
if keys[2] == True and forward <= (choice1).max_speed:
forward += (choice1).acceleration
if keys[3] == True and forward >= 0:
forward -= (choice1).acceleration
#Vehicle 2
if keys_2[0] == True:
direction_2 += (choice2).turning_radius
if keys_2[1] == True:
direction_2 -= (choice2).turning_radius
if keys_2[2] == True and forward_2 <= (choice2).max_speed:
forward_2 += (choice2).acceleration
if keys_2[3] == True and forward_2 >= 0:
forward_2 -= (choice2).acceleration
movex = math.cos(direction / 57.29) * forward
movey = math.sin(direction / 57.29) * forward
xpos += movex
ypos -= movey
movex_2 = math.cos(direction_2 / 57.29) * forward_2
movey_2 = math.sin(direction_2 / 57.29) * forward_2
xpos_2 += movex_2
ypos_2 -= movey_2
rotation = pygame.transform.rotate((choice1).image, direction)
rotation_2 = pygame.transform.rotate((choice2).image, direction_2)
screen.blit(rotation, (xpos, ypos))
screen.blit(rotation_2, (xpos_2, ypos_2))
pygame.display.flip()
time.sleep(0.01)
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
exit(0)
if event.type == pygame.KEYDOWN:
if event.key == K_LEFT:
keys[0] = True
elif event.key == K_RIGHT:
keys[1] = True
elif event.key == K_UP:
keys[2] = True
elif event.key == K_DOWN:
keys[3] = True
if event.key == K_a:
keys_2[0] = True
elif event.key == K_d:
keys_2[1] = True
elif event.key == K_w:
keys_2[2] = True
elif event.key == K_s:
keys_2[3] = True
if event.type == pygame.KEYUP:
if event.key == pygame.K_LEFT:
keys[0] = False
elif event.key == pygame.K_RIGHT:
keys[1] = False
elif event.key == pygame.K_UP:
keys[2] = False
elif event.key == pygame.K_DOWN:
keys[3] = False
if event.key == pygame.K_a:
keys_2[0] = False
elif event.key == pygame.K_d:
keys_2[1] = False
elif event.key == pygame.K_w:
keys_2[2] = False
elif event.key == pygame.K_s:
keys_2[3] = False
#Collision detection
(choice1).checkCollision((choice2).image, (choice1).image)
【问题讨论】：
-
哪行代码导致错误？在代码中的某处，您尝试从
Surface而非对象或使用get_rect()方法访问矩形。 -
听起来你可以使用pixel-perfect collision detection，你可以借助掩码来实现。
标签： python pygame sprite collision rect