Pygame - Collisions on the sides of a platform [duplicate]

问题

I am currently trying to make my own platformer on pygame. I have coded the collisions for the top and bottom of the platform so that the player can only jump on top of the platform if they are falling onto it. However, if the player walks into the side of the platform, he snaps on top of it. How can I make it so the sides of a platform act as a border? This is my update section in the main game loop:

def update(self):
    self.all_sprites.update() 
    hits = p.sprite.spritecollide(self.player, self.platforms, False) 
    if self.player.vel.y > 0: 
        if hits: 
            self.player.rect.bottom = hits[0].rect.top + 1 
            self.player.pos = self.player.rect.midbottom 
            self.player.vel.y = 0 
    if self.player.vel.y < 0: 
        if hits: 
            self.player.rect.top = hits[0].rect.bottom 
            self.player.pos = self.player.rect.midbottom 
            self.player.vel.y = 0

I have tried using this, but it didnt work:

if self.player.vel.x > 0:
    if hits:
        self.player.rect.right = hits[0].rect.left
        self.player.pos = self.player.rect.midleft
        self.player.vel.x = 0
if self.player.vel.x < 0:
    if hits:
        self.player.rect.left = hits[0].rect.right
        self.player.pos = self.player.rect.midright
        self.player.vel.x = 0

This is my player class:

vec = p.math.Vector2 

class Player(p.sprite.Sprite): 
    def __init__(self, game):
        p.sprite.Sprite.__init__(self) 
        self.game = game 
        self.image = p.Surface((p_width, p_height)) 
        self.image.fill(p_colour) 
        self.rect = self.image.get_rect() 
        self.rect.center = (0, height - 30) 
        self.pos = vec(0, height - 30) 
        self.vel = vec(0, 0) 
        self.acc = vec(0, 0)

    def jump(self): 
       
        self.rect.y += 1 
        hits = p.sprite.spritecollide(self, self.game.platforms, False) 
        self.rect.y -= 1 
        if hits: 
            self.vel.y = p_jump 
    def update(self): 
        self.acc = vec(0, p_grav) 

        keys = p.key.get_pressed() 

        if keys[p.K_LEFT]: 
            self.acc.x = -p_acc 
        if keys[p.K_RIGHT]: 
            self.acc.x = p_acc 

        self.acc.x += self.vel.x * p_friction 

        self.vel += self.acc 
        self.pos += self.vel + 0.5 * self.acc 

        if self.rect.right > width - 1: 
            self.rect.right = width - 1 
            self.pos = self.rect.midbottom 
        if self.rect.left < 1: 
            self.rect.left = 1 
            self.pos = self.rect.midbottom 
        self.rect.midbottom = self.pos

Any help is appreciated. I tried keeping the code minimal

来源：https://stackoverflow.com/questions/65523511/pygame-collisions-on-the-sides-of-a-platform

标签

python

pygame

collision