Here's the full code of the game. A lot of this is a sort of template provided by the teacher so there are a lot of things that aren't supposed to be changed.
Code:
import pygame
SCR_WID, SCR_HEI = 640, 480
class Player():
def __init__(self):
self.x, self.y = 16, SCR_HEI/2
self.speed = 3
self.padWid, self.padHei = 8, 64
self.score = 0
self.scoreFont = pygame.font.Font("imagine_font.ttf", 64)
def scoring(self):
scoreBlit = self.scoreFont.render(str(self.score), 1, (255, 255, 255))
screen.blit(scoreBlit, (32, 16))
if self.score == 10:
print ("player 1 wins!")
exit()
def movement(self):
keys = pygame.key.get_pressed()
if keys[pygame.K_w]:
self.y -= self.speed
elif keys[pygame.K_s]:
self.y += self.speed
if self.y <= 0:
self.y = 0
elif self.y >= SCR_HEI-64:
self.y = SCR_HEI-64
def draw(self):
pygame.draw.rect(screen, (255, 255, 255), (self.x, self.y, self.padWid, self.padHei))
class Player2():
def __init__(self):
self.x, self.y = 280, 480
self.speed = 3
self.padWid, self.padHei = 64, 8
self.score = 0
self.scoreFont = pygame.font.Font("imagine_font.ttf", 64)
def scoring(self):
scoreBlit = self.scoreFont.render(str(self.score), 1, (255, 255, 255))
screen.blit(scoreBlit, (280, 16))
if self.score == 10:
print ("player 2 wins!")
exit()
def movement(self):
keys = pygame.key.get_pressed()
if keys[pygame.K_l]:
self.x -= self.speed
elif keys[pygame.K_k]:
self.x += self.speed
if self.y <= 0:
self.y = 0
elif self.y >= SCR_HEI-64:
self.y = SCR_HEI-64
def draw(self):
pygame.draw.rect(screen, (255, 255, 255), (self.x, self.y, self.padWid, self.padHei))
class Enemy():
def __init__(self):
self.x, self.y = SCR_WID-16, SCR_HEI/2
self.speed = 3
self.padWid, self.padHei = 8, 64
self.score = 0
self.scoreFont = pygame.font.Font("imagine_font.ttf", 64)
def scoring(self):
scoreBlit = self.scoreFont.render(str(self.score), 1, (255, 255, 255))
screen.blit(scoreBlit, (SCR_HEI+92, 16))
if self.score == 10:
print ("Player 2 wins!")
exit()
def movement(self):
keys = pygame.key.get_pressed()
if keys[pygame.K_UP]:
self.y -= self.speed
elif keys[pygame.K_DOWN]:
self.y += self.speed
if self.y <= 0:
self.y = 0
elif self.y >= SCR_HEI-64:
self.y = SCR_HEI-64
def draw(self):
pygame.draw.rect(screen, (255, 255, 255), (self.x, self.y, self.padWid, self.padHei))
class Ball():
def __init__(self):
self.x, self.y = SCR_WID/2, SCR_HEI/2
self.speed_x = -3
self.speed_y = 3
self.size = 8
def movement(self):
self.x += self.speed_x
self.y += self.speed_y
#wall col
if self.y <= 0:
self.speed_y *= -1
if self.x <= 0:
self.__init__()
enemy.score += 1
player2.score += 1
elif self.x >= SCR_WID-self.size:
self.__init__()
self.speed_x = 3
player.score += 1
player2.score += 1
if self.y >= (SCR_HEI - self.size):
self.__init__()
self.speed_y = -3
enemy.score += 1
player.score += 1
##wall col
#paddle col
#player
for n in range(-self.size, player.padHei):
if self.y == player.y + n:
if self.x <= player.x + player.padWid:
self.speed_x *= -1
break
n += 1
#player2
for n in range(-self.size, player2.padWid):
if self.y == player2.y + n:
if self.x >= player2.x - player2.padHei:
self.speed_y *= -1
break
n += 1
#enemy
for n in range(-self.size, enemy.padHei):
if self.y == enemy.y + n:
if self.x >= enemy.x - enemy.padWid:
self.speed_x *= -1
break
n += 1
##paddle col
def draw(self):
pygame.draw.rect(screen, (255, 255, 255), (self.x, self.y, 8, 8))
def main():
SCR_WID, SCR_HEI = 640, 480
screen = pygame.display.set_mode((SCR_WID, SCR_HEI))
pygame.display.set_caption("Pong")
pygame.font.init()
clock = pygame.time.Clock()
FPS = 60
bg = pygame.image.load("dragon.jpg")
player = Player()
player2 = Player2()
enemy = Enemy()
ball = Ball()
while True:
#process
for event in pygame.event.get():
if event.type == pygame.QUIT:
print ("Game exited by user")
exit()
##process
#logic
ball.movement()
player.movement()
player2.movement()
enemy.movement()
##logic
#draw
screen.fill((0, 0, 0))
screen.blit(bg, (100, 100))
ball.draw()
player.draw()
player.scoring()
player2.draw()
player2.scoring()
enemy.draw()
enemy.scoring()
##draw
#_______
pygame.display.flip()
clock.tick(FPS)
main()
As is, I get the error I described above, traced back to the Ball class. Specifically the part under the "player collide" comment. If I take all the code that makes up the main function out of said function, everything works fine. If it is in that function, I get the error.
It does seem weird to me that it works as is at all. I added the Player2 class, but my teacher wrote the Ball, Player, and Enemy classes, and the Ball class handled collision detection for the Player and Enemy the same way as it is here.
So I'd love to know what I can do to fix this (I'm supposed to have a main function). But, probably even more, I'd love to know why it works the one way and not the other.
Thanks.
