[英]Player movement
我寫了這個簡單的代碼,繪制然后讓你移動一個矩形,但即使我通過調用move_player_x_函數改變矩形的坐標,它根本不會移動。 我不明白為什么。 我來到這里尋找澄清和詳細解決我的問題。
這是代碼:
import pygame
white = (255, 255, 255)
black = (0, 0, 0)
class Game():
width = 800
height = 600
screen = pygame.display.set_mode((width, height))
def __init__(self):
pass
def fill_screen(self, color):
self.color = color
self.screen.fill(self.color)
def update_method(self):
pygame.display.update()
game = Game()
class Player(pygame.sprite.Sprite):
lead_x = game.width/2
lead_y = game.height/2
lead_x_change = 0
lead_y_change = 0
velocity = 0.2
block_size = 10
def __init__(self):
pygame.sprite.Sprite.__init__(self)
def move_player_x_left(self):
self.lead_x_change += -self.velocity
def move_player_x_right(self):
self.lead_x_change += self.velocity
def move_player_y_up(self):
self.lead_y_change += -self.velocity
def move_player_y_down(self):
self.lead_y_change += self.velocity
def draw_player(self):
pygame.draw.rect(game.screen, black, [self.lead_x, self.lead_y, self.block_size, self.block_size])
def key_up_x_stop(self):
self.lead_x = 0
def key_up_y_stop(self):
self.lead_y = 0
def constant_x_movement(self):
self.lead_x += self.lead_x_change
def constant_y_movement(self):
self.lead_y += self.lead_y_change
player = Player()
exitGame = False
while not exitGame:
game.fill_screen(white)
for event in pygame.event.get():
if event.type == pygame.QUIT:
exitGame = True
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_w:
player.move_player_y_up()
if event.key == pygame.K_s:
player.move_player_y_down()
if event.key == pygame.K_a:
player.move_player_x_left()
if event.key == pygame.K_d:
player.move_player_x_right()
if event.type == pygame.KEYUP:
if event.key == pygame.K_w or event.key == pygame.K_s:
player.key_up_y_stop()
if event.key == pygame.K_a or event.key == pygame.K_d:
player.key_up_x_stop()
player.constant_x_movement()
player.constant_y_movement()
player.draw_player()
game.update_method()
pygame.quit()
quit()
事件循環中的代碼未正確縮進。 這是一個更正版本:
while not exitGame:
game.fill_screen(white)
for event in pygame.event.get():
if event.type == pygame.QUIT:
exitGame = True
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_w:
player.move_player_y_up()
if event.key == pygame.K_s:
player.move_player_y_down()
if event.key == pygame.K_a:
player.move_player_x_left()
if event.key == pygame.K_d:
player.move_player_x_right()
if event.type == pygame.KEYUP:
if event.key == pygame.K_w or event.key == pygame.K_s:
player.key_up_y_stop()
if event.key == pygame.K_a or event.key == pygame.K_d:
player.key_up_x_stop()
此外,在...stop
方法中,您必須將lead_x_change
和lead_y_change
設置為0而不是lead_x
和lead_y
。
def key_up_x_stop(self):
self.lead_x_change = 0
def key_up_y_stop(self):
self.lead_y_change = 0
我編輯了你的代碼,我在播放器對象move_player
添加了一個函數,其中包含本地布爾值bUp,bDown,bLeft,bRight
。 如果python有枚舉,它會好得多。 任何如何,在事件KEY DOWN和KEY UP,他們切換播放器中的這些布爾值。 在計算輸入並且這些布爾值被切換/設置之后,它在玩家對象中調用move_player()
來檢查其布爾值,並設置一個while循環,同時一個為真,並在受尊重的位置添加速度並重新繪制玩家。 在這里我得到的來源......
import pygame
white = (255, 255, 255)
black = (0, 0, 0)
class Game():
width = 800
height = 600
screen = pygame.display.set_mode((width, height))
def __init__(self):
pass
def fill_screen(self, color):
self.color = color
self.screen.fill(self.color)
def update_method(self):
pygame.display.update()
class Player(pygame.sprite.Sprite):
lead_x = 800/2
lead_y = 600/2
velocity = 0.002
block_size = 10
bUp = false
bDown = false
bLeft = false
bRight = false
def __init__(self):
pygame.sprite.Sprite.__init__(self)
def draw_player(self):
pygame.draw.rect(game.screen, black, [self.lead_x, self.lead_y, self.block_size, self.block_size])
def move_player(self):
while bLeft:
self.lead_x += -self.velocity
self.draw_player()
while bRight:
self.lead_x += self.velocity
self.draw_player()
while bUp:
self.lead_y += -self.velocity
self.draw_player()
while bDown:
self.lead_y += self.velocity
self.draw_player()
game = Game()
player = Player()
exitGame = False
while not exitGame:
game.fill_screen(white)
for event in pygame.event.get():
if event.type == pygame.QUIT:
exitGame = True
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_w:
player.bUp = true
if event.key == pygame.K_s:
player.bDown = true
if event.key == pygame.K_d:
player.bRight = true
if event.key == pygame.K_a:
player.bLeft = true
elif event.type == pygame.KEYUP:
if event.key == pygame.K_w:
player.bUp = false
if event.key == pygame.K_s:
player.bDown = false
if event.key == pygame.K_d:
player.bRight = false
if event.key == pygame.K_a:
player.bLeft = false
player.move_player()
game.update_method()
pygame.quit()
quit()
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