如何解决如何在pygame中通过颜色碰撞使实体受到伤害?
如何让实体受到颜色伤害?我制作了一个敌人发射蓝色激光的游戏,我希望玩家受到伤害。玩家发射红色激光。在检测颜色时,我希望某个陈述为真。这会将实体的健康值降低 1。如果颜色碰撞是一回事,它对于制作许多不同的游戏非常有用。这是我的代码:
# importing packages
import pygame
import random
import time
import sys
# Initializing Pygame
pygame.init()
# Setting a display caption
pygame.display.set_caption("Space Invaders")
spaceship = pygame.image.load("spaceship2.png")
blue_enemy = pygame.image.load("blue_enemy.png")
green_enemy = pygame.image.load("green_enemy.png")
orange_enemy = pygame.image.load("orange_enemy.png")
pink_enemy = pygame.image.load("pink_enemy.png")
yellow_enemy = pygame.image.load("yellow_enemy.png")
# Creating a font
pygame.font.init()
font = pygame.font.SysFont("consolas",30)
large_font = pygame.font.SysFont("consolas",60)
small_font = pygame.font.SysFont("consolas",20)
# Setting a display width and height and then creating it
display_width = 700
display_height = 500
display_size = [display_width,display_height]
game_display = pygame.display.set_mode(display_size)
intro_display = pygame.display.set_mode(display_size)
# Creating a way to add text to the screen
def message(sentence,color,x,y,font_type,display):
sentence = font_type.render(str.encode(sentence),True,color)
display.blit(sentence,[x,y])
def main():
global white
global black
global clock
# Spaceship coordinates
spaceship_x = 300
spaceship_y = 375
spaceship_x_change = 0
blue_enemy_health = 5
green_enemy_health = 5
orange_enemy_health = 5
pink_enemy_health = 5
yellow_enemy_health = 5
# Clock making
# Initializing pygame
pygame.init()
# Creating colors
red = (0,0)
blue = (0,255)
# clock stuff
clock = pygame.time.Clock()
time_elapsed_since_last_action = 0
time_elapsed_since_last_action2 = 0
time_elapsed_since_last_action3 = 0
# Creating a loop to keep program running
while True:
laser_rect = pygame.Rect(spaceship_x + 69,70,4,310)
# --- Event Processing and controls
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()
elif event.type == pygame.KEYDOWN:
if event.key == pygame.K_RIGHT:
spaceship_x_change = 10
elif event.key == pygame.K_LEFT:
spaceship_x_change = -10
elif event.key == pygame.K_r:
red = (255,0)
elif time_elapsed_since_last_action2 > 250:
pygame.draw.rect(game_display,red,laser_rect)
time_elapsed_since_last_action2 = 0
elif event.type == pygame.KEYUP:
spaceship_x_change = 0
red = (0,0)
spaceship_x += spaceship_x_change
# Preventing the ship from going off the screen
if spaceship_x > display_width - 140:
spaceship_x -= 10
if spaceship_x < 1:
spaceship_x += 10
# Setting display color
game_display.fill(black)
laser_coords = [70,209,348,505,630]
random_x_coord = random.choice(laser_coords)
dt = clock.tick()
time_elapsed_since_last_action += dt
if time_elapsed_since_last_action > 500:
pygame.draw.rect(game_display,blue,[random_x_coord,85,6,305])
time_elapsed_since_last_action = 0
time_elapsed_since_last_action2 += dt
# Creating a spaceship,lasers,and enemies
game_display.blit(spaceship,(spaceship_x,spaceship_y))
message(str(blue_enemy_health),white,65,10,font,game_display)
game_display.blit(blue_enemy,(20,25))
message(str(green_enemy_health),203,game_display)
game_display.blit(green_enemy,(160,25))
message(str(orange_enemy_health),341,game_display)
game_display.blit(orange_enemy,(300,25))
message(str(pink_enemy_health),496,game_display)
game_display.blit(pink_enemy,(440,25))
message(str(yellow_enemy_health),623,game_display)
game_display.blit(yellow_enemy,(580,25))
health = 10
message("Spaceship durability: " + str(health),20,480,small_font,game_display)
# Updating Screen so changes take places
pygame.display.update()
# Setting FPS
FPS = pygame.time.Clock()
FPS.tick(60)
black = (0,0)
white = (255,255,255)
gray = (100,100,100)
while True:
intro_display.fill(black)
pygame.event.poll()
mouse = pygame.mouse.get_pos()
click = pygame.mouse.get_pressed()
message("Space Bugs",180,150,large_font,intro_display)
if 150 + 100 > mouse[0] > 150 and 350 + 50 > mouse[1] > 350:
pygame.draw.rect(game_display,gray,[150,350,50])
if click[0] == 1:
break
else:
pygame.draw.rect(game_display,50])
if 450 + 100 > mouse[0] > 450 and 350 + 50 > mouse[1] > 350:
pygame.draw.rect(game_display,[450,50])
if click[0] == 1:
pygame.quit()
quit()
else:
pygame.draw.rect(game_display,50])
message("Start",black,155,360,intro_display)
message("Quit",465,intro_display)
# Go ahead and update the screen with what we've drawn.
pygame.display.update()
# Wrap-up
# Limit to 60 frames per second
clock = pygame.time.Clock()
clock.tick(60)
# Executing the function
if __name__ == "__main__":
main()
解决方法
不,没有“颜色碰撞”这样的“东西”。图片有什么颜色?它们的颜色均匀吗?很可能这些图片只是在某些细节上有所不同。检查统一颜色的碰撞完全没有用。同样寻找统一颜色的碰撞几乎是无用的。
如果您检测到碰撞,就会知道激光和敌人。因此,您知道代表它们的颜色。您所要做的就是在检测到碰撞后进行额外检查。
使用 pygame.sprite.Sprite
来实现对象。添加指示对象颜色的属性:
class ColoredSprite(pygame.sprite.Sprite):
def __init__(self,x,y,image,color):
super().__init__()
self.image = image
self.rect = self.image.get_rect(center = (x,y)
slef.color = color
管理 pygame.sprite.Group
中的恶意并使用 spritecollide
检测碰撞。检测到碰撞时检查 color
属性
collide_list = sprite.spritecollide(sprite_group,False):
for other_sprite in collide_list:
if sprite.color == 'red' and other_sprite.color == 'blue':
# [...]
elif sprite.color == 'blue' and other_sprite.color == 'red':
# [...]
甚至可以通过设置可选的 collided 参数来实现您自己的碰撞检测方法并将其与 spritecollide
结合使用:
def color_collision(sprite1,sprite2):
if sprite1.rect.colliderect(sprite2.rect):
return ((sprite1.color == 'red' and sprite2.color == 'blue') or
(sprite1.color == 'blue' and sprite2.color == 'red'))
return false
collide_list = sprite.spritecollide(sprite_group,False,color_collision):
for other_sprite in collide_list:
# [...]
最小示例:
import pygame
pygame.init()
window = pygame.display.set_mode((250,250))
sprite1 = pygame.sprite.Sprite()
sprite1.image = pygame.Surface((75,75))
sprite1.image.fill('red')
sprite1.rect = pygame.Rect(*window.get_rect().center,0).inflate(75,75)
sprite1.color = 'red'
sprite2 = pygame.sprite.Sprite()
sprite2.image = pygame.Surface((75,75))
sprite2.image.fill('blue')
sprite2.rect = pygame.Rect(*window.get_rect().center,75)
sprite2.color = 'blue'
all_group = pygame.sprite.Group([sprite2,sprite1])
def color_collision(sprite1,sprite2):
if sprite1.rect.colliderect(sprite2.rect):
return ((sprite1.color == 'red' and sprite2.color == 'blue') or
(sprite1.color == 'blue' and sprite2.color == 'red'))
return False
run = True
while run:
for event in pygame.event.get():
if event.type == pygame.QUIT:
run = False
sprite1.rect.center = pygame.mouse.get_pos()
collide = pygame.sprite.spritecollide(sprite1,all_group,color_collision)
window.fill(0)
all_group.draw(window)
for s in collide:
pygame.draw.rect(window,(255,255,255),s.rect,5,1)
pygame.display.flip()
pygame.quit()
exit()
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