我正在开始一个角色扮演游戏，当角色在任何一侧的墙上奔跑时，我无法让玩家顺利上下移动。此外，角色不能平稳地向左或向右移动，同时按住上下键并靠近墙壁向北或向南移动。
我尝试了不同的“移动”配置。功能没有成功。我知道算法为什么不起作用，我只是无法弄清楚如何构造分支，这样当向右运行时，它会设置自我。直接。立即=正确。左＆＃39;没有设置＆＃39; self.rect.bottom = p.rect.top＆＃39;在下一次调用＆＃39; move（）＆＃39;当我靠墙撞击时开始压下来。
def move(self, x, y, platforms):
self.rect.left += x
self.rect.top += y
for p in platforms:
if pygame.sprite.collide_rect(self, p):
if isinstance(p, ExitBlock):
pygame.event.post(pygame.event.Event(QUIT))
if self.x > 0: # Moving right
self.rect.right = p.rect.left
if self.x < 0: # Moving left
self.rect.left = p.rect.right
if self.y > 0: # Moving down
self.rect.bottom = p.rect.top
if self.y < 0: # Moving up
self.rect.top = p.rect.bottom
以下是您可以运行的完整代码，以查看不需要的行为：
#! /usr/bin/python
import pygame, platform, sys
platform.architecture()
from pygame import *
import spritesheet
from sprite_strip_anim import SpriteStripAnim
WIN_W = 1400
WIN_H = 800
HALF_W = int(WIN_W / 2)
HALF_H = int(WIN_H / 2)
DEPTH = 32
FLAGS = 0
CAMERA_SLACK = 30
class Entity(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
class Player(Entity):
def __init__(self, x, y):
Entity.__init__(self)
self.x = 0
self.y = 0
self.onGround = False
self.image = Surface((32,32))
self.image.fill(Color("#0000FF"))
self.image.convert()
self.rect = Rect(x, y, 32, 32)
def update(self, up, down, left, right, running, platforms):
if up:
self.y = -5
if down:
self.y = 5
if left:
self.x = -5
if right:
self.x = 5
if not(left or right):
self.x = 0
if not(up or down):
self.y = 0
self.move(self.x, 0, platforms)
self.move(0, self.y, platforms)
def move(self, x, y, platforms):
self.rect.left += x
self.rect.top += y
for p in platforms:
if pygame.sprite.collide_rect(self, p):
if isinstance(p, ExitBlock):
pygame.event.post(pygame.event.Event(QUIT))
if self.x > 0: # Moving right
self.rect.right = p.rect.left
if self.x < 0: # Moving left
self.rect.left = p.rect.right
if self.y > 0: # Moving down
self.rect.bottom = p.rect.top
if self.y < 0: # Moving up
self.rect.top = p.rect.bottom
class Platform(Entity):
def __init__(self, x, y):
Entity.__init__(self)
self.image = Surface((32, 32))
self.image.convert()
self.image.fill(Color("#DDDDDD"))
self.rect = Rect(x, y, 32, 32)
def update(self):
pass
class ExitBlock(Platform):
def __init__(self, x, y):
Platform.__init__(self, x, y)
self.image.fill(Color("#0033FF"))
def main():
pygame.init
screen = pygame.display.set_mode((WIN_W, WIN_H), FLAGS, DEPTH)
pygame.display.set_caption("Use arrows to move!")
timer = pygame.time.Clock()
up = down = left = right = running = False
bg = Surface((32,32))
bg.convert()
bg.fill(Color("#000000"))
entities = pygame.sprite.Group()
player = Player(32, 32)
platforms = []
x = y = 0
level = [
"PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP",
"P P",
"P P",
"P P",
"P PPPPPPPPPPP P",
"P P",
"P P",
"P P",
"P PPPPPPPP P",
"P P",
"P PPPPPPP P",
"P PPPPPP P",
"P P",
"P PPPPPPP P",
"P P",
"P PPPPPP P",
"P P",
"P PPPPPPPPPPP P",
"P P",
"P PPPPPPPPPPP P",
"P P",
"P P",
"P P",
"P P",
"PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP",]
# build the level
for row in level:
for col in row:
if col == "P":
p = Platform(x, y)
platforms.append(p)
entities.add(p)
if col == "E":
e = ExitBlock(x, y)
platforms.append(e)
entities.add(e)
x += 32
y += 32
x = 0
total_level_width = len(level[0])*32
total_level_height = len(level)*32
entities.add(player)
while 1:
timer.tick(60)
# draw background
for y in range(32):
for x in range(32):
screen.blit(bg, (x * 32, y * 32))
for e in pygame.event.get():
if e.type == QUIT: raise SystemExit, "QUIT"
if e.type == KEYDOWN and e.key == K_ESCAPE:
raise SystemExit, "ESCAPE"
if e.type == KEYDOWN and e.key == K_w:
up = True
down = False
if e.type == KEYDOWN and e.key == K_s:
down = True
up = False
if e.type == KEYDOWN and e.key == K_a:
left = True
right = False
if e.type == KEYDOWN and e.key == K_d:
right = True
left = False
if e.type == KEYUP and e.key == K_w:
up = False
if e.type == KEYUP and e.key == K_s:
down = False
if e.type == KEYUP and e.key == K_d:
right = False
if e.type == KEYUP and e.key == K_a:
left = False
# update player, draw everything else
player.update(up, down, left, right, running, platforms)
for e in entities:
screen.blit(e.image, e.rect)
pygame.display.update()
if __name__ == "__main__":
main()
答案 0 :(得分：0)
找到一个适用于@ http://pygame.org/project-Rect+Collision+Response-1061-.html的算法：
def move(self, dx, dy):
# Move each axis separately. Note that this checks for collisions both times.
if dx != 0:
self.move_single_axis(dx, 0)
if dy != 0:
self.move_single_axis(0, dy)
def move_single_axis(self, dx, dy):
# Move the rect
self.rect.x += dx
self.rect.y += dy
# If you collide with a wall, move out based on velocity
for wall in walls:
if self.rect.colliderect(wall.rect):
if dx > 0: # Moving right; Hit the left side of the wall
self.rect.right = wall.rect.left
if dx < 0: # Moving left; Hit the right side of the wall
self.rect.left = wall.rect.right
if dy > 0: # Moving down; Hit the top side of the wall
self.rect.bottom = wall.rect.top
if dy < 0: # Moving up; Hit the bottom side of the wall
self.rect.top = wall.rect.bottom