So here's my code, I am trying to understand how I can be able to display the surfaces I created onto the main screen which is SCREEN. I drew the maze onto another surface and then I blitted that surface onto the main screen. Then I blitted the PacMan surface onto the main screen, I am also trying to blit the background image onto the screen as well. My question is how do I blit them properly, like for example do I blit the maze first then the PacMan then the background, or what would be the correct order to blit them?
As for the PacManBite function, I am updating the PacManStartSurface to give it the effect that it is biting the dots, but then I also am updating the entire screen, is there a way to properly use the pygame.update() function because I think that's why the screen tends to flicker?
I also wanted to use SCREEN.fill(BLACK) so that it can get rid of any trails the PacMan leaves but for some reason I don't know where to place it in my main loop. Any help would be appreciated.
import pygame
pygame.init()
pygame.display.set_caption("Pac-Man")
# Sets the size of the screen via (WIDTH, HEIGHT)
SCREEN_WIDTH = 475
SCREEN_HEIGHT = 608
# Speed of Characters
SPEED = 1
# Frames per second, how fast the game runs
FPS = 50
# Colors (RED,GREEN,BLUE)
BLACK = (0, 0, 0)
WHITE = (255, 255, 255)
YELLOW = (255, 255, 0)
BLUE = (0, 0, 255)
HIGH_SCORE = 0
# Sets the WIDTH and HEIGHT of the window
WINDOW = (SCREEN_WIDTH, SCREEN_HEIGHT)
# Displays the screen
SCREEN = pygame.display.set_mode(WINDOW)
CLOCK = pygame.time.Clock()
PacManStartSurface = pygame.transform.scale(pygame.image.load
("PacManStart.png").convert(),
(25, 25))
PacManStartRect = PacManStartSurface.get_rect(topleft =
(((SCREEN_WIDTH - 22) // 2),
(SCREEN_HEIGHT + 225) // 2))
PacManSurface = pygame.transform.scale(pygame.image.load
("PacManRight.png").convert(), (25, 25))
PacManRect = PacManStartSurface.get_rect(topleft =
(((SCREEN_WIDTH - 22) // 2),
(SCREEN_HEIGHT + 225) // 2))
CurrentSurface = PacManStartSurface
CurrentRect = PacManStartRect
BackgroundSurface = pygame.image.load("Background.png").convert()
class PacMan():
def __init__(self):
self.LIVES = 3
class PowerUp(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
self.image = pygame.transform.scale(pygame.image.load("PowerUp.png")
.convert(), (23, 23))
self.mask = pygame.mask.from_surface(self.image)
class YellowGhost(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
self.image = pygame.transform.scale(pygame.image.load("YellowGhost.png")
.convert(), (23, 23))
self.rect = self.image.get_rect(topleft = (235, 347))
self.mask = pygame.mask.from_surface(self.image)
class RedGhost(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
self.image = pygame.transform.scale(pygame.image.load("RedGhost.png")
.convert(), (23, 23))
self.rect = self.image.get_rect(topleft = (235, 347))
self.mask = pygame.mask.from_surface(self.image)
class BlueGhost(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
self.image = pygame.transform.scale(pygame.image.load("BlueGhost.png")
.convert(), (23, 23))
self.rect = self.image.get_rect(topleft = (235, 347))
self.mask = pygame.mask.from_surface(self.image)
class PinkGhost(pygame.sprite.Sprite):
def __init__(self):
self.image = pygame.transform.scale(pygame.image.load("PinkGhost.png")
.convert(), (23, 23))
self.rect = self.image.get_rect(topleft = (235, 347))
self.mask = pygame.mask.from_surface(self.image)
class Maze():
def __init__(self):
self.DOTS = []
self.WALLS = []
self.BLOCK_WIDTH = 22
self.BLOCK_HEIGHT = 22
self.MARGIN = 3
# 0 - Dots
# 1 - Walls
# 2 - Power Up
# 3 - Empty Space
# 4 - Ghosts
self.MATRIX = [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1], \
[1,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,1], \
[1,2,1,1,0,1,1,1,0,1,0,1,1,1,0,1,1,2,1], \
[1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1], \
[1,0,1,1,0,1,0,1,1,1,1,1,0,1,0,1,1,0,1], \
[1,0,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,0,1], \
[1,1,1,1,0,1,1,1,3,1,3,1,1,1,0,1,1,1,1], \
[3,3,3,1,0,1,3,3,3,3,3,3,3,1,0,1,3,3,3], \
[1,1,1,1,0,1,3,1,1,1,1,1,3,1,0,1,1,1,1], \
[0,0,0,0,0,3,3,1,4,4,4,1,3,3,0,0,0,0,0], \
[1,1,1,1,0,1,3,1,1,1,1,1,3,1,0,1,1,1,1], \
[3,3,3,1,0,1,3,3,3,3,3,3,3,1,0,1,3,3,3], \
[1,1,1,1,0,1,3,1,1,1,1,1,3,1,0,1,1,1,1], \
[1,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,1], \
[1,2,1,1,0,1,1,1,0,1,0,1,1,1,0,1,1,2,1], \
[1,0,0,1,0,0,0,0,0,3,0,0,0,0,0,1,0,0,1], \
[1,1,0,1,0,1,0,1,1,1,1,1,0,1,0,1,0,1,1], \
[1,0,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,0,1], \
[1,0,1,1,1,1,1,1,0,1,0,1,1,1,1,1,1,0,1], \
[1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1], \
[1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1]
self.MAZE_HEIGHT = (self.MARGIN + self.BLOCK_HEIGHT) \
* len(self.MATRIX)
self.MAZE_WIDTH = (self.MARGIN + self.BLOCK_WIDTH) \
* len(self.MATRIX[0])
def DrawGrid(self, MazeSurface):
for ROW in range(len(self.MATRIX)):
for COLUMN in range(len(self.MATRIX[0])):
if self.MATRIX[ROW][COLUMN] == 0:
self.DOTS.append(pygame.draw.circle(MazeSurface, YELLOW,
[((self.MARGIN + self.BLOCK_WIDTH)
* COLUMN + self.MARGIN) + 9,
((self.MARGIN + self.BLOCK_HEIGHT)
* ROW + self.MARGIN) + 50], 2))
if self.MATRIX[ROW][COLUMN] == 1:
self.WALLS.append(pygame.draw.rect(MazeSurface, WHITE,
[((self.MARGIN + self.BLOCK_WIDTH)
* COLUMN + self.MARGIN) - 2,
((self.MARGIN + self.BLOCK_HEIGHT)
* ROW + self.MARGIN) + 41,
self.BLOCK_WIDTH, self.BLOCK_HEIGHT]))
class Main(Maze):
def __init__(self):
# Inherits Maze class
Maze.__init__(self)
self.DIRECTION = ""
self.SCORE = 0
def Movement(self):
key = pygame.key.get_pressed()
if key[pygame.K_LEFT] and not key[pygame.K_UP] \
and not key[pygame.K_DOWN]:
self.DIRECTION = "LEFT"
elif key[pygame.K_RIGHT] and not key[pygame.K_UP] \
and not key[pygame.K_DOWN]:
self.DIRECTION = "RIGHT"
elif key[pygame.K_UP] and not key[pygame.K_LEFT] \
and not key[pygame.K_RIGHT]:
self.DIRECTION = "UP"
elif key[pygame.K_DOWN] and not key[pygame.K_LEFT] \
and not key[pygame.K_RIGHT]:
self.DIRECTION = "DOWN"
def ContinueMovement(self):
if self.DIRECTION == "LEFT":
CurrentRect.x -= SPEED
self.WallDetection(-1, 0, CurrentRect)
if self.DIRECTION == "RIGHT":
CurrentRect.x += SPEED
self.WallDetection(1, 0, CurrentRect)
if self.DIRECTION == "UP":
CurrentRect.y -= SPEED
self.WallDetection(0, -1, CurrentRect)
if self.DIRECTION == "DOWN":
CurrentRect.y += SPEED
self.WallDetection(0, 1, CurrentRect)
def ChangeImage(self):
global CurrentSurface
if self.DIRECTION == "LEFT":
CurrentSurface = pygame.transform.rotate(PacManSurface, 180)
if self.DIRECTION == "RIGHT":
CurrentSurface = PacManSurface
if self.DIRECTION == "UP":
CurrentSurface = pygame.transform.rotate(PacManSurface, 90)
if self.DIRECTION == "DOWN":
CurrentSurface = pygame.transform.rotate(PacManSurface, 270)
def Teleport(self):
if CurrentRect.right < 0:
CurrentRect.right = SCREEN_WIDTH + 20
if CurrentRect.left > SCREEN_WIDTH:
CurrentRect.right = 0
def WallDetection(self, x, y, CurrentRect):
CurrentRect.right += x
for wall in self.WALLS:
collide = CurrentRect.colliderect(wall)
if collide:
if x < 0:
CurrentRect.left = wall.right
elif x > 0:
CurrentRect.right = wall.left
break
CurrentRect.top += y
for wall in self.WALLS:
collide = CurrentRect.colliderect(wall)
if collide:
if y < 0:
CurrentRect.top = wall.bottom
if y > 0:
CurrentRect.bottom = wall.top
break
def EatDots(self):
for ROW in range(len(self.MATRIX)):
for COLUMN in range(len(self.MATRIX[0])):
for DOT in self.DOTS:
chomp = CurrentRect.colliderect(DOT)
if chomp:
self.DOTS.remove(DOT)
self.MATRIX[ROW][COLUMN] = 3
self.SCORE += 10
return str(self.SCORE)
def EatGhosts(self):
pass
def EatPowerUp(self):
pass
def ShowText(self):
Font = pygame.font.Font("emulogic.ttf", 15)
OneUpText = Font.render("1UP", True, WHITE)
OneUpTextRect = OneUpText.get_rect(center = (70, 10))
OneUpScoreText = Font.render("00", True, WHITE)
UpdateScore = Main.EatDots(self)
if int(self.SCORE) > 0:
OneUpScoreText = Font.render(UpdateScore, True, WHITE)
OneUpScoreRect = OneUpScoreText.get_rect(center =
((SCREEN_WIDTH - 290)
// 2, 26))
HighScoreText = Font.render("High Score", True, WHITE)
HighScoreTextRect = HighScoreText.get_rect(center =
(SCREEN_WIDTH // 2, 10))
HighScoreNumber = Font.render("00", True, WHITE)
HighScoreNumberRect = HighScoreNumber.get_rect(center =
((SCREEN_WIDTH + 90)
// 2, 26))
SCREEN.blit(OneUpText, OneUpTextRect)
SCREEN.blit(OneUpScoreText, OneUpScoreRect)
SCREEN.blit(HighScoreText, HighScoreTextRect)
SCREEN.blit(HighScoreNumber, HighScoreNumberRect)
def PacManBite(self):
SCREEN.blit(PacManStartSurface, PacManStartRect)
pygame.display.update()
Player = Main()
BackgroundImage = pygame.transform.scale(BackgroundSurface,
(Player.MAZE_WIDTH,
Player.MAZE_HEIGHT))
BackgroundRect = BackgroundImage.get_rect(topleft = (0, 41))
MazeSurface = pygame.Surface((SCREEN_WIDTH, SCREEN_HEIGHT - 10))
MazeRect = MazeSurface.get_rect(topleft = ((SCREEN_WIDTH - 475,
SCREEN_HEIGHT - 608)))
Player.DrawGrid(MazeSurface)
'''
pregame = True
while pregame:
if key button pressed:
pregame = False
run = True
'''
run = True
while run:
for event in pygame.event.get():
if event.type == pygame.QUIT:
run = False
if event.type == pygame.KEYDOWN:
Player.Movement()
Player.ChangeImage()
Player.Teleport()
Player.ContinueMovement()
Player.PacManBite()
SCREEN.blit(MazeSurface, MazeRect)
MazeSurface.blit(CurrentSurface, CurrentRect)
#SCREEN.blit(BackgroundImage, BackgroundRect)
Player.ShowText()
pygame.display.update()
CLOCK.tick(FPS)
pygame.quit()
You have to blit the CurrentSurface on the MazeSurface, before you blit the MazeSurface on the SCREEN:
MazeSurface.blit(CurrentSurface, CurrentRect)
SCREEN.blit(MazeSurface, MazeRect)