不知道为什么没有爆炸效果。其他图都画得很好，唯独爆炸图不行explosion = pygame.image.load(os.path.join(image_path, "explosion.png"))explosion_size = explosion.get_rect().sizeexplosion_width = explosion_size[0]for missile_idx, missile_val in enumerate(missiles): missile_pos_x = missile_val[0] missile_pos_y = missile_val[1] #weapon information upgrade missile_rect = missile.get_rect() missile_rect.left = missile_pos_x missile_rect.top = missile_pos_y if missile_rect.colliderect(rock_rect): explosion_sound.play() **explosion_pos_x = missile_pos_x explosion_pos_y = missile_pos_y screen.blit(explosion,(explosion_pos_x,explosion_pos_y))** del(rock) del(missiles) missiles = [] # missile position coordination missiles = [[m[0], m[1] - missile_speed] for m in missiles] # top missile elimination missiles = [[m[0], m[1]] for m in missiles if m[1]>0]
2 回答
森林海
TA贡献2011条经验 获得超2个赞
爆炸只显示了一小会儿。用于pygame.time.get_ticks()返回自调用以来的毫秒数pygame.init()。计算必须删除爆炸图像之后的时间点。将爆炸的坐标和结束时间点添加到列表的头部 ( explosionList )。在主应用程序循环中绘制爆炸。从列表尾部删除过期的爆炸：
explosionList = []
while run:
current_time = pygame.time.get_ticks()
# [...]
for missile_idx, missile_val in enumerate(missiles)
# [...]
if missile_rect.colliderect(rock_rect):
explosion_sound.play()
explosion_pos_x = missile_pos_x
explosion_pos_y = missile_pos_y
end_time = current_time + 2000 # 2000 milliseconds = 2 seconds
explosionList.insert(0, (end_time, explosion_pos_x, explosion_pos_y))
# [...]
for i in range(len(explosionList)):
if current_time < explosionList[i][0]:
screen.blit(explosion, (explosionList[i][1], explosionList[i][2]))
else:
explosionList = explosionList[:i]
break
# [...]
使用该算法可以管理多次爆炸。
import pygame
pygame.init()
window = pygame.display.set_mode((210, 210))
def create_rectangles():
global rectangles
w, h = window.get_size()
rectangles = []
for x in range(0, w - 60, 60):
for y in range(0, h - 60, 60):
rectangles.append(pygame.Rect(x + 30, y + 30, 30, 30))
create_rectangles()
hit_list = []
fade_out_time = 3000
run = True
while run:
current_time = pygame.time.get_ticks()
for event in pygame.event.get():
if event.type == pygame.QUIT:
run = False
point = pygame.mouse.get_pos()
collideindex = pygame.Rect(point, (1, 1)).collidelist(rectangles)
if collideindex >= 0:
end_time = current_time + fade_out_time
hit_list.insert(0, (end_time, rectangles[collideindex].center))
del rectangles[collideindex]
if not hit_list and not rectangles:
create_rectangles()
window.fill(0)
for r in rectangles:
pygame.draw.rect(window, (255, 0, 0), r)
for i in range(len(hit_list)):
delta_time = hit_list[i][0] - current_time
if delta_time > 0:
radius = round(30 * delta_time / fade_out_time)
pygame.draw.circle(window, (255, 255, 0), hit_list[i][1], radius)
else:
hit_list = hit_list[:i]
break
pygame.display.flip()
智慧大石
TA贡献1946条经验 获得超3个赞
如果您想显示爆炸图像一段时间，此方法可能很有用。
explosion_list = [] # list for explosion effect
running = True
while running:
start_time = pygame.time.get_ticks() # add time for explosion effect
for missile_idx, missile_val in enumerate(missiles):
missile_pos_x = missile_val[0]
missile_pos_y = missile_val[1]
#weapon information upgrade
missile_rect = missile.get_rect()
missile_rect.left = missile_pos_x
missile_rect.top = missile_pos_y
if missile_rect.colliderect(rock_rect):
explosion_sound.play()
explosion_pos_x = missile_pos_x
explosion_pos_y = missile_pos_y
explosion_time = start_time + 2000 # 1000 milliseconds = 2 seconds
**explosion_list.insert(0, (explosion_time, explosion_pos_x, explosion_pos_y))**
del(rock)
del(missiles)
missiles = []
# missile position coordination
missiles = [[m[0], m[1] - missile_speed] for m in missiles]
# top missile elimination
missiles = [[m[0], m[1]] for m in missiles if m[1]>0]
**for i in range(len(explosion_list)):
if start_time < explosion_time:
pygame.display.update()
screen.blit(explosion, (explosion_pos_x - 30, explosion_pos_y - 30))
pygame.time.delay(10)**
else:
explosion_list = explosion_list[:i]
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