我目前正在为我的A-Level项目构建一个小型平台模型，遇到了我或我的朋友无法解决的问题。玩家似乎向右滑动而不是向左滑动很多（请注意：需要左侧的小滑动），平台似乎也无法正确移动，有些需要按要求移动，例如墙壁，但地板却没有并且所有内容都剪辑到屏幕的右侧。任何建议都会有所帮助。
import pygame as pg
import random
import time
vec = pg.math.Vector2
#Player Props
PLAYER_ACC = 1.5
PLAYER_FRICTION = -0.12
PLAYER_GRAV = 0.8
#Display
WIDTH = 1800
HEIGHT = 1000
#Colours
WHITE = (225,225,255)
BLACK = (0,0,0)
RED = (225,0,0)
BLUE = (0,0,225)
PURPLE = (95, 11, 239)
ORANGE = (250,123,10)
class Player(pg.sprite.Sprite):
def __init__(self, game):
#Player spawn and location
pg.sprite.Sprite.__init__(self)
self.game = game
self.image = pg.Surface((32, 32))
self.image.fill(PURPLE)
self.rect = self.image.get_rect()
self.pos = vec(WIDTH/2, 200)
self.vel = vec(0, 0)
self.acc = vec (0, 0)
def jump(self):
#Jumping when standing on playform
self.rect.x += 1
hits = pg.sprite.spritecollide(self, self.game.platformsA, False)
self.rect.x -= 1
if hits:
self.vel.y = -20
def update(self):
#Player Movement/Gravity
self.acc = vec (0, PLAYER_GRAV)
self.vy = 1
keys = pg.key.get_pressed()
if keys[pg.K_LEFT]:
self.acc.x = -PLAYER_ACC
if keys[pg.K_RIGHT]:
self.acc.x = PLAYER_ACC
#Accelaration/Friction
self.acc.x += self.vel.x * PLAYER_FRICTION
self.vel += self.acc
if self.vel[1]> 10:
self.vel[1] = 10
self.pos += self.vel + 0.25 * self.acc
self.rect.midbottom = self.pos
class Platform(pg.sprite.Sprite):
def __init__(self, x, y, w, h):
#Building Platforms
pg.sprite.Sprite.__init__(self)
self.image = pg.Surface((w, h))
self.rect = self.image.get_rect()
self.image.fill(WHITE)
self.rect.x = x
self.rect.y = y
class Game:
def __init__(self):
#initialize game window etc
pg.init()
pg.mixer.init()
self.screen = pg.display.set_mode((WIDTH, HEIGHT))
self.screen.fill(BLACK)
pg.display.update()
pg.display.set_caption('Fur-Rush')
self.clock = pg.time.Clock()
self.running = True
def new(self):
#start new game/spawn everything
self.all_sprites = pg.sprite.Group()
self.platforms = pg.sprite.Group()
self.platformsA = pg.sprite.Group()
self.platformsB = pg.sprite.Group()
self.platformsWa = pg.sprite.Group()
self.platformsWb = pg.sprite.Group()
self.player = Player(self)
self.all_sprites.add(self.player)
#Read platform dimensions from platforms.txt
with open ('platforms.txt','r') as me:
allplat = (me.read().split('\n'))
newplat = [x.replace(',','').split(' ') for x in allplat]
#Recursive loop to add platforms
for x in range(len(newplat)):
name = str(newplat[x][0])
plat = Platform(int(newplat[x][1]), int(newplat[x][2]), int(newplat[x][3]), int(newplat[x][4]))
self.all_sprites.add(plat)
self.platforms.add(plat)
if 'A' in str(name):
self.platformsA.add(plat)
elif 'B' in str(name):
self.platformsB.add(plat)
elif 'Wa' in str(name):
self.platformsWa.add(plat)
elif 'Wb' in str(name):
self.platformsWb.add(plat)
self.run()
def run(self):
#game loop
self.playing = True
while self.playing:
self.clock.tick(60)
self.events()
self.update()
self.draw()
def update(self):
#game loop - update
self.all_sprites.update()
#Top of platform
hits = pg.sprite.spritecollide(self.player, self.platformsA, False)
if hits:
self.player.pos.y = hits[0].rect.top
self.player.vel.y = 0
#Bottom of platform
hits2 = pg.sprite.spritecollide(self.player, self.platformsB, False)
if hits2:
self.player.pos.y = (hits2[0].rect.top + 42)
self.player.vel.y = 0
#Walls for left dectection
hits3 = pg.sprite.spritecollide(self.player, self.platformsWa, False)
if hits3:
self.player.pos.x = (hits3[0].rect.right+16)
self.player.vel.x = 0
#Walls for right dectection
hits4 = pg.sprite.spritecollide(self.player, self.platformsWb, False)
if hits4:
self.player.pos.x = (hits4[0].rect.left - 16)
self.player.vel.x = 0
#moving camra/display with player
#left
if self.player.rect.left <= WIDTH/3:
self.player.pos.x += abs(self.player.vel.x)
for plat in self.platforms:
plat.rect.x += abs(self.player.vel.x)
#right (ISSUES)
if self.player.rect.right >=WIDTH/1.5:
self.player.pos.x -= abs(self.player.vel.x)
for plat in self.platforms:
plat.rect.x -= abs(self.player.vel.x)
#bottom
if self.player.rect.top >= HEIGHT/1.25:
self.player.pos.y += 0.1
for plat in self.platforms:
plat.rect.y -= 7
#top
if self.player.rect.bottom <= HEIGHT/5:
self.player.pos.y -= 0.1
for plat in self.platforms:
plat.rect.y += 7
def events(self):
#game loop - events
for event in pg.event.get():
#check for closed window
if event.type == pg.QUIT:
if self.playing:
self.playing = False
self.running = False
if event.type == pg.KEYDOWN:
if event.key == pg.K_UP:
self.player.jump()
def draw(self):
# Game loop draw
self.screen.fill(BLACK)
self.all_sprites.draw(self.screen)
#after drawing everything, flip
pg.display.flip()
def show_start_screen(self):
#start screen
pass
def show_end_screen(self):
#Level end screen
pass
g = Game()
g.show_start_screen()
while g.running:
g.new()
g.show_end_screen()
pg.quit()
运行代码所需的文件必须称为“ platforms.txt”，并具有以下内容：
plA, -300, 126, 1500, 10
plB, -300, 136, 1500, 10
plA2, -300, 536, 1100, 10
plB2, -300, 546, 1100, 10
plA3, -100, 336, 1300, 10
plB3, -100, 346, 1300, 10
plA4, 1000, 536, 200, 10
plB4, 1000, 546, 200, 10
plA5, 800, 1526, 200, 10
plB5, 800, 1536, 200, 10
plWa, -300, 136, 20, 400
plWb, 1180, 136, 20, 400
plWa2, 800, 546, 20, 1000
plWb2, 1000, 546, 20, 1000
答案 0 :(得分：1)
我没有运行完整的代码，但是快速查看问题似乎在这里：
if keys[pg.K_LEFT]:
self.acc.x = -PLAYER_ACC
if keys[pg.K_RIGHT]:
self.acc.x = PLAYER_ACC
#Accelaration/Friction
self.acc.x += self.vel.x * PLAYER_FRICTION
PLAYER_FRICTION是正数，您要在不改变摩擦方向的情况下进行添加/乘积。
如果要应用某种奇怪的效果，则可以确定要应用的方向（通过将-1乘以它来确定方向），也可以为不同的方向分配不同的摩擦力。
因此，您可能会遇到类似这样的事情：
PLAYER_FRICTION_LEFT = 0.12
PLAYER_FRICTION_RIGHT = -0.12
...
...
if keys[pg.K_LEFT]:
self.acc.x = -PLAYER_ACC
self.acc.x += self.vel.x * PLAYER_FRICTION_LEFT
if keys[pg.K_RIGHT]:
self.acc.x = PLAYER_ACC
self.acc.x += self.vel.x * PLAYER_FRICTION_RIGHT
或者类似这样的东西：
if keys[pg.K_LEFT]:
self.acc.x = -PLAYER_ACC
friction = -PLAYER_FRICTION
if keys[pg.K_RIGHT]:
self.acc.x = PLAYER_ACC
friction = PLAYER_FRICTION
self.acc.x += self.vel.x * friction