pygame 中的 isCollision 函数

Question

我最近在 pygame 开始编程，我一直想知道为什么我的 isCollision 函数不起作用。您实际上不必运行代码，因为您需要下载图片才能执行。如果可以，请告诉我为什么 isCollision 函数不起作用。在有 for i in range(num_of_obstacles) 循环的主循环中，有 if iscollision 语句。如果您想查看该程序的功能，这里是所有基本文件：顺便说一句，请不要重写整个代码。]2[]3

不要介意评论，因为它们是经过润色的。这是我的代码：

import pygame
import math
import random

#inicjowanie pygame (to trzeba zawsze dać)
pygame.init()

screen = pygame.display.set_mode((800, 600))

pygame.display.set_caption('Kosmiczna Przygoda')

playericon = pygame.image.load('rocket.png')
player2icon = pygame.image.load('rocket.png')

backgroundImg = pygame.image.load('1083.jpg')


num_of_obstacles = 10
obstacleImg = []

obsX = [random.randint(0, 400) for i in range(num_of_obstacles // 2)]
obs2X = [random.randint(400, 800) for i in range(num_of_obstacles // 2)]

for i in obs2X:
    obsX.append(i)

obsY = []

for i in range(num_of_obstacles):
    obstacleImg.append(pygame.image.load('rectangle.png'))


for i in range(num_of_obstacles):
    obsY.append(random.randint(50, 300))

# pierwsze koordynaty
PlayerX, PlayerY = 200, 480
Player2X, Player2Y = 500, 480





PlayerY_change, PlayerX_change = 1, 1
Player2Y_change, Player2X_change = 1, 1



def player(x,y,x2,y2):
    screen.blit(playericon, (x, y))
    screen.blit(player2icon, (x2, y2))


winFont = pygame.font.Font('freesansbold.ttf', 64)
won1, won2 = False, False

def player1Wins():
    win_text = winFont.render('PLAYER 1 WON!',True,(255,255,255))
    screen.blit(win_text,(30,30))


def player2Wins():
    win_text = winFont.render('PLAYER 2 WON!',True,(255,255,255))
    screen.blit(win_text,(150,30))

# wzór matematyczny na odległość koordynatów dwóch punktów (sprawdzabnie czy się dotykają)
def isCollision(obsX,obsY,pX,pY):
    distance = math.sqrt(math.pow(obsX - pX, 2) + math.pow(obsY - pY, 2))
    if distance >= 27:
        return True
    else:
        return False

running = True
won = False

while running:
    # tło (blit to rysowanie)
    screen.blit(backgroundImg, (0, 0))


    # event to wydarzenie zarejestrowane przez program
    # jeżeli klikne krzyzyk w prawym gornym rogu to program sie zamknie
    # jeżeli nacisne np strzalke w prawo to rakieta przesuwa się na ukos w prawo

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_a:
                PlayerX_change = -1
            if event.key == pygame.K_d:
                PlayerX_change = 1
            if event.key == pygame.K_LEFT:
                Player2X_change = -1
            if event.key == pygame.K_RIGHT:
                Player2X_change = 1
            if event.key == pygame.K_w:
                PlayerY_change = 2
            if event.key == pygame.K_UP:
                Player2Y_change = 2
        if event.type == pygame.KEYUP:
            if event.key == pygame.K_UP:
                PlayerY2_change = 0.75
            if event.key == pygame.K_w:
                PlayerY_change = 0.75

    for enemy in range(num_of_obstacles):
        if won:
            screen.blit(obstacleImg[enemy], (2000, 2000))
        else:
            #if isCollision(obsX[enemy], obsY[enemy],PlayerX,PlayerY):
                #player2Wins()


            screen.blit(obstacleImg[enemy], (obsX[enemy], obsY[enemy]))

    # Granice Ekranu
    if PlayerX <= 0:
        PlayerX = 0
    elif PlayerX >= 736:
        PlayerX = 736
    if PlayerY <= 0:
        won, won1 = True, True
        PlayerY, Player2Y = 480, 480
        PlayerX, Player2X = 200, 500

    if Player2X <= 0:
        Player2X = 0
    elif Player2X >= 736:
        Player2X = 736
    if Player2Y <= 0:
        won, won2 = True, True
        PlayerY, Player2Y = 480, 480
        PlayerX, Player2X = 200, 500

    if won1:
        player1Wins()
        PlayerX_change, PlayerY_change = 0, 0
        Player2X_change, Player2Y_change = 0, 0
    if won2:
        player2Wins()
        PlayerX_change, PlayerY_change = 0, 0
        Player2X_change, Player2Y_change = 0, 0

    # Zmiana kordynatów rakiety

    PlayerX += PlayerX_change
    PlayerY -= PlayerY_change
    Player2X += Player2X_change
    Player2Y -= Player2Y_change

    player(PlayerX, PlayerY, Player2X, Player2Y)
    pygame.display.update()

Answer 1

您是否应该检查距离是否为 <= 27 而不是 >= 27？

def isCollision(obsX, obsY, pX, pY):
    distance = math.sqrt(math.pow(obsX - pX, 2) + math.pow(obsY - pY, 2))
    return distance <= 27

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