I was trying to create a simple game but i’ve came to a problem once i added ennemies. The ennemies disappeared once they get off the screen and when i come back..Once i start the game and after I came back.
So, i tried to use the debugger and i realised that it was the height of the ennemy (red rectangle) that was changing from 20 to 0. However i dont know why it does that beacuse never in my code im changing the height of this rectangle.
I’ve recreated a small program that shows the issue:
import pygame
WIDTH, HEIGHT = 800, 600
PLAYER_WIDTH, PLAYER_HEIGHT = 10, 20
FPS = 60
VELOCITY = 1
GRAVITY = 1
PLAYER_SPEED = 5
ENEMY_SPEED = 1
JUMPING_HEIGHT = 15
window = pygame.display.set_mode((WIDTH, HEIGHT))
class Player:
def __init__(self, platforms, enemy):
self.player_pos_x = 200
self.player_pos_y = 350
self.draw_player()
self.platforms = platforms
self.jumping = False
self.velocity = 0
self.falling = False
self.enemy = enemy
def gravity(self):
if self.jumping:
self.jump()
if self.falling:
self.fall()
for platform in self.platforms:
if self.player.y > platform.y + platform.height and self.player.y < platform.y + platform.height + 20:
if self.player_pos_x + self.player.width >= platform.x and self.player_pos_x <= platform.x + platform.width:
self.jumping = False
self.falling = False
self.fall()
elif self.player_pos_y + self.player.height > platform.y and self.player_pos_y < platform.y:
if self.player_pos_x + self.player.width >= platform.x and self.player_pos_x <= platform.x + platform.width:
self.player_pos_y = platform.y - self.player.height
self.jumping = False
self.falling = False
self.velocity = JUMPING_HEIGHT
break
elif self.player.bottom <= platform.y - 1:
if not self.jumping and not self.falling:
self.fall()
def jump(self):
if not self.jumping:
self.jumping = True
self.velocity = JUMPING_HEIGHT
else:
self.player_pos_y -= self.velocity
self.velocity -= GRAVITY
if self.velocity < -JUMPING_HEIGHT:
self.jumping = False
def fall(self):
if not self.falling:
if self.velocity > 0:
self.velocity = 0
self.falling = True
else:
self.player_pos_y -= self.velocity
self.velocity -= GRAVITY
if self.velocity < -99999:
self.falling = False
self.velocity = JUMPING_HEIGHT
def draw_player(self):
self.player = pygame.draw.rect(window, (0, 0, 255), (self.player_pos_x, self.player_pos_y, PLAYER_WIDTH, PLAYER_HEIGHT))
def right(self):
for platform in self.platforms:
if (self.player.y > platform.y and self.player.y < platform.bottom) or (self.player.bottom < platform.bottom and self.player.bottom > platform.y):
if self.player.right > platform.x - PLAYER_SPEED and self.player.right < platform.right - PLAYER_SPEED:
return
self.enemy.enemy_pos_x -= PLAYER_SPEED
for platform in self.platforms:
platform.x -= PLAYER_SPEED
def left(self):
for platform in self.platforms:
if (self.player.y > platform.y and self.player.y < platform.bottom) or (self.player.bottom < platform.bottom and self.player.bottom > platform.y):
if self.player.x < platform.right + PLAYER_SPEED and self.player.x > platform.x + PLAYER_SPEED:
return
self.enemy.enemy_pos_x += PLAYER_SPEED
for platform in self.platforms:
platform.x += PLAYER_SPEED
def player_movement(self):
self.gravity()
keys = pygame.key.get_pressed()
if keys[pygame.K_d]:
self.right()
if keys[pygame.K_q]:
self.left()
if keys[pygame.K_SPACE]:
if not self.jumping and not self.falling:
self.jump()
class Enemy:
def __init__(self, x, y, platforms):
self.enemy_pos_x = x
self.enemy_pos_y = y
self.draw_enemy()
self.platforms = platforms
self.falling = False
self.velocity = 0
self.Times = 0
#Direction: Positive = Right ; Negative = Left
self.direction = ENEMY_SPEED
def draw_enemy(self):
self.enemy = pygame.draw.rect(window, (255, 0, 0), (self.enemy_pos_x, self.enemy_pos_y, PLAYER_WIDTH, PLAYER_HEIGHT))
if self.enemy_pos_x <= 0:
return
if self.enemy.h == 0:
self.enemy.h = 25
self.enemy.y = 100
def gravity(self):
if self.falling:
self.fall()
platform_y = 9999
for platform in self.platforms:
if (self.enemy.right > platform.x and self.enemy.right < platform.right) or (self.enemy.x < platform.right and self.enemy.x > platform.x):
if self.enemy.y < platform.y and platform.y < platform_y:
platform_y = platform.y
for platform in self.platforms:
if self.enemy.y > platform.y + platform.height and self.enemy.y < platform.y + platform.height + 20:
if self.enemy_pos_x + self.enemy.width >= platform.x and self.enemy_pos_x <= platform.x + platform.width:
self.falling = False
self.fall()
elif self.enemy_pos_y + self.enemy.height > platform.y and self.enemy_pos_y < platform.y:
if self.enemy_pos_x + self.enemy.width >= platform.x and self.enemy_pos_x <= platform.x + platform.width:
self.enemy_pos_y = platform_y - self.enemy.height
self.falling = False
self.velocity = JUMPING_HEIGHT
break
elif self.enemy.bottom < platform_y - 1:
if not self.falling:
self.fall()
def fall(self):
if not self.falling:
if self.velocity > 0:
self.velocity = 0
self.falling = True
else:
self.enemy_pos_y -= self.velocity
self.velocity -= GRAVITY
if self.velocity < -99999:
self.falling = False
self.velocity = JUMPING_HEIGHT
def enemy_movement(self):
self.gravity()
self.moving()
def moving(self):
for platform in self.platforms:
if self.direction > 0:
if (self.enemy.y > platform.y and self.enemy.y < platform.bottom) or (self.enemy.bottom < platform.bottom and self.enemy.bottom > platform.y):
if self.enemy.right > platform.x - ENEMY_SPEED and self.enemy.right < platform.right - ENEMY_SPEED:
self.direction *= -1
else:
if (self.enemy.y > platform.y and self.enemy.y < platform.bottom) or (self.enemy.bottom < platform.bottom and self.enemy.bottom > platform.y):
if self.enemy.x < platform.right + ENEMY_SPEED and self.enemy.x > platform.x + ENEMY_SPEED:
self.direction *= -1
self.enemy_pos_x += self.direction
clock = pygame.time.Clock()
platforms = []
platforms.append(pygame.Rect(0, 400, 10000, 200))
platforms.append(pygame.Rect(100, 320, 100, 20))
platforms.append(pygame.Rect(100, 290, 10, 30))
platforms.append(pygame.Rect(190, 290, 10, 30))
def main():
run = True
enemy = Enemy(150, 300, platforms)
player = Player(platforms, enemy)
while run:
clock.tick(FPS)
for event in pygame.event.get():
if event.type == pygame.QUIT:
run = False
window.fill((20, 150, 200))
player.draw_player()
enemy.draw_enemy()
player.player_movement()
enemy.enemy_movement()
for platform in platforms:
pygame.draw.rect(window, (123, 123, 123), platform)
pygame.display.update()
main()
Thank you in advance.
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