I was wondering why my playerIMG wont load in pygame-CodePudding

Here is my code below this is my first pygame project any help will be appreciated! I think its something to do with the

def player(playerX,playerY):
pygame.display.update()

block of code. Though when I play around with it sometimes it won't even display my background object and only displays the screen filler black.

import pygame

#initializing the game
pygame.init()

FPS = 60
black = (0,0,0)
white = (255,255,255)

#creating the screen and setting the size
gameDisplay = pygame.display.set_mode((800,600))

#setting the title of the window
pygame.display.set_caption('Space Crashers')

#going into our files and loading the image for the background
background = pygame.image.load(r'C:\\Users\\ahmad\\Downloads\\pygame projects\\Assets\\newBackground.jpg')

#player image and model
playerImg = pygame.image.load(r'C:\\Users\\ahmad\\Downloads\\pygame projects\\Assets\\blueShip.png')
#these cords are for the player ship to be in the middle of the screen
playerX = 370
playerY = 480

#creating player function
def player(x,y):
    gameDisplay.blit(playerImg, (x,y))




# window creation
clock = pygame.time.Clock()
running = True
while running:
    
     #setting the background to black
    gameDisplay.fill(black)
   
    #then changing the background to the image we loaded
    gameDisplay.blit(background,(0,0))
    
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
             running = False
    pygame.display.update() 
    
        # if the keystroke is pressed, the player will move
    if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT:
                playerX -= .01
            if event.key == pygame.K_RIGHT:
                playerX  = .01
            if event.key == pygame.K_UP:
                playerY -= .01
            if event.key == pygame.K_DOWN:
                playerY  = .01
    
    
    
               
def player(playerX,playerY):         
        pygame.display.update()             
clock.tick(FPS)   
pygame.quit()
quit()

CodePudding user response：

See How can I make a sprite move when key is held down. Also learn about Indentation. Your code must have the correct indentation to work properly.

The typical PyGame application loop has to:

limit the frames per second to limit CPU usage with pygame.time.Clock.tick
handle the events by calling either pygame.event.pump() or pygame.event.get().
update the game states and positions of objects dependent on the input events and time (respectively frames)
clear the entire display or draw the background
draw the entire scene (blit all the objects)
update the display by calling either pygame.display.update() or pygame.display.flip()

import pygame

#initializing the game
pygame.init()

FPS = 60
black = (0,0,0)
white = (255,255,255)

#creating the screen and setting the size
gameDisplay = pygame.display.set_mode((800,600))

#setting the title of the window
pygame.display.set_caption('Space Crashers')

#going into our files and loading the image for the background
background = pygame.image.load(r'C:\\Users\\ahmad\\Downloads\\pygame projects\\Assets\\newBackground.jpg')

#player image and model
playerImg = pygame.image.load(r'C:\\Users\\ahmad\\Downloads\\pygame projects\\Assets\\blueShip.png')
#these cords are for the player ship to be in the middle of the screen
playerX = 370
playerY = 480

# creating player function
def player(x,y):
    gameDisplay.blit(playerImg, (x,y))

# application loop
clock = pygame.time.Clock()
running = True
while running:
    
    # handle the events 
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
             running = False

    # update the game states and positions of objects
    keys = pygame.key.get_pressed()
    playerX  = (keys[pygame.K_RIGHT] - keys[pygame.K_LEFT])  * 3
    playerY  = (keys[pygame.K_DOWN] - keys[pygame.K_UP]) * 3

    # clear the entire display or draw the background
    gameDisplay.fill(black)
    gameDisplay.blit(background,(0,0))

    # draw the entire scene (blit all the objects)
    player(playerX, playerY)
    
    # update the display 
    pygame.display.update()  

    # limit the frames per second to limit CPU usage with
    clock.tick(FPS)   

pygame.quit()
quit()

CodePudding user response：

Issues found:

if block for keyboard controls is outside the for event loop.
did not call for player function before the pygame.display.update()
player function has duplicate

while running:

    # setting the background to black
    gameDisplay.fill(black)

    # then changing the background to the image we loaded
    gameDisplay.blit(background, (0, 0))

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

        # if the keystroke is pressed, the player will move
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT:
                playerX -= .01 * 100
            if event.key == pygame.K_RIGHT:
                playerX  = .01 * 100
            if event.key == pygame.K_UP:
                playerY -= .01 * 100
            if event.key == pygame.K_DOWN:
                playerY  = .01 * 100

    player(playerX, playerY)
    pygame.display.update()

# def player(playerX, playerY):
#     pygame.display.update()