告诉敌人通过屏幕边界的方式比走遍整个屏幕要短
Teach enemy that the way thru screen border is shorter than going all over the screen
我正在做一个项目，一个小游戏，我在其中整合了我从之前问题的答案中学到的一些东西。嗯，我想做一个标题画面。一切正常，但在“游戏”中我集成了“wraparound-effect”，这意味着玩家从屏幕的一侧离开并进入另一侧。我的效果版本非常简单，正因为如此，怪物无法跟随玩家穿过屏幕边界并在屏幕上走来走去，这让游戏变得更加简单，这不是我想要的。
我可以教敌人通过屏幕边界跟随玩家吗？
代码如下：
#sorry if the code isn't perfect, please just answer my question :) (you don't have to rewrite it)
#enemy means devil, I first did not want to make more enemies.
import pygame, time, math
pygame.init()
display_width = 1300
display_height = 700
win = pygame.display.set_mode((display_width, display_height))
clock = pygame.time.Clock()
Icon = pygame.image.load("Enmy.png")
pygame.display.set_icon(Icon)
playerimg = pygame.image.load("Playr.png").convert_alpha()
imgsize = (57, 100)
playerimg = pygame.transform.scale(playerimg, imgsize)
enmimg = pygame.image.load("Enmy.png").convert_alpha()
imgsze = (57, 100)
enmimg = pygame.transform.scale(enmimg, imgsze)
slimeimg = pygame.image.load("slime.png").convert_alpha()
imgesize = (57, 100)
slimeimg = pygame.transform.scale(slimeimg, imgesize)
gameover = pygame.image.load("GameOver.png")
imgsz = (100, 100)
gameover = pygame.transform.scale(gameover, imgsz)
player = playerimg.get_rect(center = (650, 350))
vel = 3
enemy = enmimg.get_rect(center = (650, 600))
EnemyVel = 2.7
DevilLives = 1
slime = slimeimg.get_rect(center = (650, 100))
slimeVel = 2.3
slimeLives = 1
Gameover = gameover.get_rect(center = (350, 350))
def text_objects(text, font):
textSurface = font.render(text, True, (0, 0, 0))
return textSurface, textSurface.get_rect()
def Intro():
intro = True
while intro:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
exit()
key = pygame.key.get_pressed()
if key[pygame.K_SPACE]:
intro = False
win.fill((255, 255, 255))
largeText = pygame.font.Font('freesansbold.ttf',115)
TextSurf, TextRect = text_objects("Monster Run", largeText)
mediumText = pygame.font.Font("freesansbold.ttf",40)
textSurf, textRect = text_objects("Press SPACE to start", mediumText)
TextRect.center = ((display_width/2),(150))
textRect.center = ((display_width/2),(670))
win.blit(TextSurf, TextRect)
win.blit(textSurf, textRect)
win.blit(playerimg, player)
win.blit(enmimg, enemy)
pygame.display.flip()
clock.tick(15)
def game():
run = True
while run:
clock.tick(50)
for event in pygame.event.get():
if event.type == pygame.QUIT:
run = False
pygame.quit()
exit()
collideDevil = player.colliderect(enemy)
collideSlime = player.colliderect(slime)
cldDevlSlm = enemy.colliderect(slime)
if cldDevlSlm:
enemy.x = enemy.x + 20
slime.x = slime.x - 20
if collideSlime:
pygame.quit()
exit(0)
if collideDevil:
pygame.quit()
exit(0)
keys = pygame.key.get_pressed()
player.x += (keys[pygame.K_d] - keys[pygame.K_a]) * vel
player.y += (keys[pygame.K_s] - keys[pygame.K_w]) * vel
player.x += (keys[pygame.K_RIGHT] - keys[pygame.K_LEFT]) * vel
player.y += (keys[pygame.K_DOWN] - keys[pygame.K_UP]) * vel
#wraparound-effect
if player.x <= -40:
player.x = player.x + 1300
if player.x >= 1300:
player.x = player.x - 1340
if player.y <= -40:
player.y = player.y + 700
if player.y >= 700:
player.y = player.y - 740
#devil "AI"
dx = player.x - enemy.x
dy = player.y - enemy.y
dist = math.hypot(dx, dy)
if dist > 0:
enemy.x += min(EnemyVel, dist) * dx / dist
enemy.y += min(EnemyVel, dist) * dy / dist
#slime "AI"
Dx = player.x - slime.x
Dy = player.y - slime.y
Dist = math.hypot(Dx, Dy)
if Dist > 0:
slime.x += min(slimeVel, Dist) * Dx / Dist
slime.y += min(slimeVel, Dist) * Dy / Dist
win.fill((255, 255, 255))
win.blit(enmimg, enemy)
win.blit(playerimg, player)
win.blit(slimeimg, slime)
pygame.display.flip()
Intro()
game()
使用取模 (%) 运算符简化将播放器“包裹”在屏幕周围的代码：
player.x %= 1340
player.y %= 740
“反转”敌人的移动，如果敌人和玩家之间的距离大于宽度的一半或高度的一半：
dx = player.x - enemy.x
dy = player.y - enemy.y
w = 1340
h = 740
if dx > w/2:
dx -= w
elif dx < -w/2:
dx += w
if dy > h/2:
dy -= w
elif dy < -h/2:
dy += h
最后将敌人“包裹”在屏幕周围：
enemy.x %= 1340
enemy.y %= 740
最小示例：
import pygame, math
pygame.init()
window = pygame.display.set_mode((300, 300))
clock = pygame.time.Clock()
player = pygame.Rect(250, 150, 20, 20)
vel = 5
enemy = pygame.Rect(50, 150, 20, 20)
enemyVel = 3
run = True
while run:
for event in pygame.event.get():
if event.type == pygame.QUIT:
run = False
keys = pygame.key.get_pressed()
player.x += (keys[pygame.K_RIGHT] - keys[pygame.K_LEFT]) * vel
player.y += (keys[pygame.K_DOWN] - keys[pygame.K_UP]) * vel
player.x %= (window.get_width() + player.width)
player.y %= (window.get_height() + player.height)
dx = player.x - enemy.x
dy = player.y - enemy.y
w = (window.get_width() + player.width)
h = (window.get_height() + player.height)
if dx > w/2:
dx -= w
elif dx < -w/2:
dx += w
if dy > h/2:
dy -= w
elif dy < -h/2:
dy += h
dist = math.hypot(dx, dy)
if dist > 0:
enemy.x += min(enemyVel, dist) * dx / dist
enemy.y += min(enemyVel, dist) * dy / dist
enemy.x %= (window.get_width() + enemy.width)
enemy.y %= (window.get_height() + enemy.height)
window.fill(0)
pygame.draw.rect(window, (0, 0, 255), player)
pygame.draw.rect(window, (255, 0, 0), enemy)
pygame.display.flip()
clock.tick(60)
pygame.quit()
exit()
我正在做一个项目，一个小游戏，我在其中整合了我从之前问题的答案中学到的一些东西。嗯，我想做一个标题画面。一切正常，但在“游戏”中我集成了“wraparound-effect”，这意味着玩家从屏幕的一侧离开并进入另一侧。我的效果版本非常简单，正因为如此，怪物无法跟随玩家穿过屏幕边界并在屏幕上走来走去，这让游戏变得更加简单，这不是我想要的。
我可以教敌人通过屏幕边界跟随玩家吗？
代码如下：
#sorry if the code isn't perfect, please just answer my question :) (you don't have to rewrite it)
#enemy means devil, I first did not want to make more enemies.
import pygame, time, math
pygame.init()
display_width = 1300
display_height = 700
win = pygame.display.set_mode((display_width, display_height))
clock = pygame.time.Clock()
Icon = pygame.image.load("Enmy.png")
pygame.display.set_icon(Icon)
playerimg = pygame.image.load("Playr.png").convert_alpha()
imgsize = (57, 100)
playerimg = pygame.transform.scale(playerimg, imgsize)
enmimg = pygame.image.load("Enmy.png").convert_alpha()
imgsze = (57, 100)
enmimg = pygame.transform.scale(enmimg, imgsze)
slimeimg = pygame.image.load("slime.png").convert_alpha()
imgesize = (57, 100)
slimeimg = pygame.transform.scale(slimeimg, imgesize)
gameover = pygame.image.load("GameOver.png")
imgsz = (100, 100)
gameover = pygame.transform.scale(gameover, imgsz)
player = playerimg.get_rect(center = (650, 350))
vel = 3
enemy = enmimg.get_rect(center = (650, 600))
EnemyVel = 2.7
DevilLives = 1
slime = slimeimg.get_rect(center = (650, 100))
slimeVel = 2.3
slimeLives = 1
Gameover = gameover.get_rect(center = (350, 350))
def text_objects(text, font):
textSurface = font.render(text, True, (0, 0, 0))
return textSurface, textSurface.get_rect()
def Intro():
intro = True
while intro:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
exit()
key = pygame.key.get_pressed()
if key[pygame.K_SPACE]:
intro = False
win.fill((255, 255, 255))
largeText = pygame.font.Font('freesansbold.ttf',115)
TextSurf, TextRect = text_objects("Monster Run", largeText)
mediumText = pygame.font.Font("freesansbold.ttf",40)
textSurf, textRect = text_objects("Press SPACE to start", mediumText)
TextRect.center = ((display_width/2),(150))
textRect.center = ((display_width/2),(670))
win.blit(TextSurf, TextRect)
win.blit(textSurf, textRect)
win.blit(playerimg, player)
win.blit(enmimg, enemy)
pygame.display.flip()
clock.tick(15)
def game():
run = True
while run:
clock.tick(50)
for event in pygame.event.get():
if event.type == pygame.QUIT:
run = False
pygame.quit()
exit()
collideDevil = player.colliderect(enemy)
collideSlime = player.colliderect(slime)
cldDevlSlm = enemy.colliderect(slime)
if cldDevlSlm:
enemy.x = enemy.x + 20
slime.x = slime.x - 20
if collideSlime:
pygame.quit()
exit(0)
if collideDevil:
pygame.quit()
exit(0)
keys = pygame.key.get_pressed()
player.x += (keys[pygame.K_d] - keys[pygame.K_a]) * vel
player.y += (keys[pygame.K_s] - keys[pygame.K_w]) * vel
player.x += (keys[pygame.K_RIGHT] - keys[pygame.K_LEFT]) * vel
player.y += (keys[pygame.K_DOWN] - keys[pygame.K_UP]) * vel
#wraparound-effect
if player.x <= -40:
player.x = player.x + 1300
if player.x >= 1300:
player.x = player.x - 1340
if player.y <= -40:
player.y = player.y + 700
if player.y >= 700:
player.y = player.y - 740
#devil "AI"
dx = player.x - enemy.x
dy = player.y - enemy.y
dist = math.hypot(dx, dy)
if dist > 0:
enemy.x += min(EnemyVel, dist) * dx / dist
enemy.y += min(EnemyVel, dist) * dy / dist
#slime "AI"
Dx = player.x - slime.x
Dy = player.y - slime.y
Dist = math.hypot(Dx, Dy)
if Dist > 0:
slime.x += min(slimeVel, Dist) * Dx / Dist
slime.y += min(slimeVel, Dist) * Dy / Dist
win.fill((255, 255, 255))
win.blit(enmimg, enemy)
win.blit(playerimg, player)
win.blit(slimeimg, slime)
pygame.display.flip()
Intro()
game()
使用取模 (%) 运算符简化将播放器“包裹”在屏幕周围的代码：
player.x %= 1340
player.y %= 740
“反转”敌人的移动，如果敌人和玩家之间的距离大于宽度的一半或高度的一半：
dx = player.x - enemy.x
dy = player.y - enemy.y
w = 1340
h = 740
if dx > w/2:
dx -= w
elif dx < -w/2:
dx += w
if dy > h/2:
dy -= w
elif dy < -h/2:
dy += h
最后将敌人“包裹”在屏幕周围：
enemy.x %= 1340
enemy.y %= 740
最小示例：
import pygame, math
pygame.init()
window = pygame.display.set_mode((300, 300))
clock = pygame.time.Clock()
player = pygame.Rect(250, 150, 20, 20)
vel = 5
enemy = pygame.Rect(50, 150, 20, 20)
enemyVel = 3
run = True
while run:
for event in pygame.event.get():
if event.type == pygame.QUIT:
run = False
keys = pygame.key.get_pressed()
player.x += (keys[pygame.K_RIGHT] - keys[pygame.K_LEFT]) * vel
player.y += (keys[pygame.K_DOWN] - keys[pygame.K_UP]) * vel
player.x %= (window.get_width() + player.width)
player.y %= (window.get_height() + player.height)
dx = player.x - enemy.x
dy = player.y - enemy.y
w = (window.get_width() + player.width)
h = (window.get_height() + player.height)
if dx > w/2:
dx -= w
elif dx < -w/2:
dx += w
if dy > h/2:
dy -= w
elif dy < -h/2:
dy += h
dist = math.hypot(dx, dy)
if dist > 0:
enemy.x += min(enemyVel, dist) * dx / dist
enemy.y += min(enemyVel, dist) * dy / dist
enemy.x %= (window.get_width() + enemy.width)
enemy.y %= (window.get_height() + enemy.height)
window.fill(0)
pygame.draw.rect(window, (0, 0, 255), player)
pygame.draw.rect(window, (255, 0, 0), enemy)
pygame.display.flip()
clock.tick(60)
pygame.quit()
exit()