我的 Pygame 表面没有被重力推回

Question

我真的很希望 purple_idle_rect 能够在空中跳跃，然后被重力拉下来。这里真正发生的是，一旦我跳跃，我就会被困在空中，然后一旦我再次按下跳跃按钮，我就会坠落。基本上，我需要按两次向上箭头键才能完全跳跃并降落在地面上。

import pygame

# import n stuff
import pygame
pygame.init()

# Screen and setup
Screen = pygame.display.set_mode((900, 500))

# Velocity
Velocity = 8

# Purple who sleep
purple_sleeping = pygame.transform.scale(pygame.image.load("purple_guy_sleeping.png"), (100, 100))
purple_sleeping_rect = purple_sleeping.get_rect(center=(450, 302))

# Purple who stand
purple_idle = pygame.transform.scale(pygame.image.load("purple_man_idle.png"), (100, 100))
purple_idle_rect = purple_idle.get_rect(midbottom = (100,360))

# The ground
ground = pygame.transform.scale(pygame.image.load("a2889b85d5c7122.png"), (800, 100))
# Main loop
Run = True
FPS = 60
Clock = pygame.time.Clock()
#  All of our keys
pressed_keys = {"left": False, "right": False}

#  Gravity
player_gravity = 0
isJump = False
while Run:
    pygame.display.update()
    Screen.fill("black")
    Screen.blit(ground, (45, 350))
    Screen.blit(purple_sleeping, purple_sleeping_rect)
    Screen.blit(purple_idle, purple_idle_rect)
    Clock.tick(FPS)
    keys = pygame.key.get_pressed()
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            exit()
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT:
                pressed_keys["left"] = True
            if event.key == pygame.K_RIGHT:
                pressed_keys["right"] = True
            if event.key == pygame.K_UP and purple_idle_rect.bottom == 360:
                player_gravity -=20
        elif event.type == pygame.KEYUP:
            if event.key == pygame.K_LEFT:
                pressed_keys["left"] = False
            if event.key == pygame.K_RIGHT:
                pressed_keys["right"] = False
            if purple_idle_rect.bottom == 360:
                isJump = False
                if not isJump:
                    purple_idle_rect.bottom = 360
            if purple_idle_rect.bottom < 360:
                isJump = True
                if isJump:
                    player_gravity += 20

    if pressed_keys["left"]:  # == True is implied here
        purple_idle_rect.x -= 10
    if pressed_keys["right"]:
        purple_idle_rect.x += 10
    purple_idle_rect.bottom += player_gravity
    if purple_idle_rect.bottom > 360:
        purple_idle_rect.bottom = 360
    pygame.display.update()

Answer 1

我稍微改变了你的跳跃，这对我来说是这样的：

player_gravity = 20
isJump = False
while Run:
    # pygame.display.update()
    Screen.fill("black")
    Screen.blit(ground, (45, 350))
    Screen.blit(purple_sleeping, purple_sleeping_rect)
    Screen.blit(purple_idle, purple_idle_rect)

    keys = pygame.key.get_pressed()
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            exit()
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT:
                pressed_keys["left"] = True
            if event.key == pygame.K_RIGHT:
                pressed_keys["right"] = True
            if event.key == pygame.K_UP and purple_idle_rect.bottom == 360:
                isJump = True
                player_gravity = -player_gravity
            
        elif event.type == pygame.KEYUP:
            if event.key == pygame.K_LEFT:
                pressed_keys["left"] = False
            if event.key == pygame.K_RIGHT:
                pressed_keys["right"] = False

    if pressed_keys["left"]:  # == True is implied here
        purple_idle_rect.x -= 10
    if pressed_keys["right"]:
        purple_idle_rect.x += 10
    
    # Set gravity back
    if isJump:
        player_gravity += 1
        if player_gravity >= 20:
            isJump = False

    purple_idle_rect.bottom += player_gravity
    if purple_idle_rect.bottom > 360:
        purple_idle_rect.bottom = 360

    pygame.display.update()
    Clock.tick(FPS)

如果您不在评论中提问，也许您已经了解一切。希望我对你有所帮助，亚当

我的 Pygame 表面没有被重力推回

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python

pygame

game-physics