パイゲームのスプライトマスクの衝突の問題

Question

パイゲームでレーシングゲームを作成しようとしています。私はそれが車がトラックから出るとき、それが遅くなるようにしたい。私はトラックの輪郭である別のスプライトを持ってこれをやろうとしましたが、そのスプライトに車が触れるとスピードが遅くなります。これは機能しません、なぜ私は知らない。これを行うより良い方法はありますか？

Traceback (most recent call last): File "C:\Users\Daniella\Desktop\Python\Games\game.py", line 75, in if pygame.sprite.collide_mask(Img, BackHit): File "C:\Users\Daniella\AppData\Roaming\Python\Python36\site-packages\pygame\sprite.py", line 1470, in collide_mask xoffset = right.rect[0] - left.rect[0] AttributeError: 'pygame.Surface' object has no attribute 'rect'

これはコードです：

Img

は

が、私はこのエラーコードを受信アウトライン競馬場

BackHit車の画像

Backされている

import pygame 

Width = 800 
Height = 600 

Black = (0, 0, 0) 
White = (255, 255, 255) 
Red = (255, 0, 0) 
Green = (0, 255, 0) 
Blue = (0, 0, 255) 
Yellow = (255, 255, 0) 
BackColour = (198, 151, 107) 

pygame.init() 
GameDisplay = pygame.display.set_mode((Width, Height)) 
pygame.display.set_caption("A bit Racey") 
Clock = pygame.time.Clock() 

Img = pygame.image.load("download.png") 
ImgWidth = 46 
ImgHeight = 68 
Img = pygame.transform.scale(Img, (ImgWidth, ImgHeight)) 

Back = pygame.image.load("back1.png") 
BackWidth = Width*4 
BackHeight = Height*4 
Back = pygame.transform.scale(Back, (BackWidth, BackHeight)) 

BackHit = pygame.image.load("back1 hit1.png") 
BackHitWidth = Width*4 
BackHitHeight = Height*4 
BackHit = pygame.transform.scale(BackHit, (BackHitWidth, BackHitHeight)) 

def Car(): 
    GameDisplay.blit(Img, (400-ImgWidth/2, 300-ImgHeight/2)) 

def Background(X, Y): 
    GameDisplay.blit(Back, (X, Y)) 

def BackgroundHit(X, Y): 
    GameDisplay.blit(BackHit, (X, Y)) 

X = (Width*0.45) 
Y = (Height*0.5) 

XChange = 0 
YChange = 0 

Changer = 1 

Crashed = False 

while not Crashed: 
    for Event in pygame.event.get(): 
     if Event.type == pygame.QUIT: 
      Crashed = True 
     elif Event.type == pygame.KEYDOWN: 
      if Event.key == pygame.K_LEFT: 
       Img = pygame.transform.rotate(Img, -90) 
       XChange = 5/Changer 
      elif Event.key == pygame.K_RIGHT: 
       Img = pygame.transform.rotate(Img, 90) 
       XChange = -5/Changer 
      elif Event.key == pygame.K_UP: 
       Img = pygame.transform.rotate(Img, 0) 
       YChange = 5/Changer 
      elif Event.key == pygame.K_DOWN: 
       Img = pygame.transform.rotate(Img, 180) 
       YChange = -5/Changer 
     if Event.type == pygame.KEYUP: 
      if Event.key == pygame.K_LEFT or Event.key == pygame.K_RIGHT: 
       XChange = 0 
      elif Event.key == pygame.K_UP or Event.key == pygame.K_DOWN: 
       YChange = 0 
    if pygame.sprite.collide_mask(Img, BackHit): 
     Changer = 2 
    Y += YChange 
    X += XChange 
    GameDisplay.fill(White) 
    BackgroundHit(X, Y) 
    Background(X, Y) 
    Car() 
    pygame.display.update() 
    Clock.tick(200) 

pygame.quit() 
quit() 

Answer 1

ピクセル完全衝突検出にpygame.mask.from_surfaceとpygame.Mask.overlapをどのように使用できるかを示す少しの例です。

import pygame as pg 

# Transparent surfaces with a circle and a triangle. 
circle_surface = pg.Surface((60, 60), pg.SRCALPHA) 
pg.draw.circle(circle_surface, (30, 90, 200), (30, 30), 30) 
triangle_surface = pg.Surface((60, 60), pg.SRCALPHA) 
pg.draw.polygon(triangle_surface, (160, 250, 0), ((30, 0), (60, 60), (0, 60))) 


def main(): 
    screen = pg.display.set_mode((640, 480)) 
    clock = pg.time.Clock() 

    # Use `pygame.mask.from_surface` to get the masks. 
    circle_mask = pg.mask.from_surface(circle_surface) 
    triangle_mask = pg.mask.from_surface(triangle_surface) 

    # Also create rects for the two images/surfaces. 
    circle_rect = circle_surface.get_rect(center=(320, 240)) 
    triangle_rect = triangle_surface.get_rect(center=(0, 0)) 

    done = False 

    while not done: 
     for event in pg.event.get(): 
      if event.type == pg.QUIT: 
       done = True 
      elif event.type == pg.MOUSEMOTION: 
       triangle_rect.center = event.pos 

     # Now calculate the offset between the rects. 
     offset_x = triangle_rect.x - circle_rect.x 
     offset_y = triangle_rect.y - circle_rect.y 

     # And pass the offset to the `overlap` method of the mask. 
     overlap = circle_mask.overlap(triangle_mask, (offset_x, offset_y)) 
     if overlap: 
      print('The two masks overlap!', overlap) 

     screen.fill((30, 30, 30)) 
     screen.blit(circle_surface, circle_rect) 
     screen.blit(triangle_surface, triangle_rect) 

     pg.display.flip() 
     clock.tick(30) 


if __name__ == '__main__': 
    pg.init() 
    main() 
    pg.quit() 

---

背景用のマスクを作成するか、余分なイメージを作成する必要が追跡し、いずれかの透明トラックや車が減速し、その後、車はと衝突するかどうかを確認する必要がありエリアを残すために、トラックまたは外部エリアとの通信を可能にします。ここでは、緑色の三角形が「トラック」（青色の線）と衝突するかどうかを確認します。ゲームでは、トラックと衝突しないと車を減速させます。

import pygame as pg 


bg_surface = pg.Surface((640, 480), pg.SRCALPHA) 
pg.draw.lines(
    bg_surface, (30, 90, 200), True, 
    ((60, 130), (300, 50), (600, 200), (400, 400), (150, 300)), 
    12) 
triangle_surface = pg.Surface((60, 60), pg.SRCALPHA) 
pg.draw.polygon(triangle_surface, (160, 250, 0), ((30, 0), (60, 60), (0, 60))) 


def main(): 
    screen = pg.display.set_mode((640, 480)) 
    clock = pg.time.Clock() 

    bg_mask = pg.mask.from_surface(bg_surface) 
    triangle_mask = pg.mask.from_surface(triangle_surface) 

    bg_rect = bg_surface.get_rect(center=(320, 240)) 
    triangle_rect = triangle_surface.get_rect(center=(0, 0)) 

    done = False 

    while not done: 
     for event in pg.event.get(): 
      if event.type == pg.QUIT: 
       done = True 
      elif event.type == pg.MOUSEMOTION: 
       triangle_rect.center = event.pos 

     offset_x = triangle_rect.x - bg_rect.x 
     offset_y = triangle_rect.y - bg_rect.y 

     overlap = bg_mask.overlap(triangle_mask, (offset_x, offset_y)) 
     if overlap: 
      print('The two masks overlap!', overlap) 

     screen.fill((30, 30, 30)) 
     screen.blit(bg_surface, bg_rect) 
     screen.blit(triangle_surface, triangle_rect) 

     pg.display.flip() 
     clock.tick(30) 


if __name__ == '__main__': 
    pg.init() 
    main() 
    pg.quit()