CODEWITHSUNDEEP
pythonpygame
Hcdev12
Hcdev12

Reputation: 31

Why won't the shape move on the screen?

import pygame 
pygame.init()

gameDisplay= pygame.display.set_mode((800,600))
pygame.display.set_caption("My game!")

gameEnd = False
gameDisplay.fill(white)
pygame.draw.rect(gameDisplay, black, [400,300,10,10])
pygame.display.update()

lead_x = 300
lead_y = 300

while not gameEnd:

    for start in pygame.event.get():
        if start.type == pygame.QUIT:
            gameEnd = True   
        if start.type == pygame.KEYDOWN:
            if start.key == pygame.K_LEFT:
                lead_x -= 10
            if start.key == pygame.K_RIGHT:
                lead_x += 10

pygame.quit()

Upvotes: 3

Views: 63

Answers (1)

Rabbid76
Rabbid76

Reputation: 211239

You've to use the coordinates (lead_x, lead_y) in the call of pygame.draw.rect.
Clearing the display (.fill()), drawing the rectangle (pygame.draw.rect()) and the update of the display (pygame.display.update()) has to be done in the main loop. So the window is continuously redrawn and the rectangle is drawn at the current position in every frame:

import pygame 
pygame.init()

gameDisplay= pygame.display.set_mode((800,600))
pygame.display.set_caption("My game!")

black   = (  0,  0,  0)
white   = (255,255,255)
lead_x  = 300
lead_y  = 300
gameEnd = False

while not gameEnd:

    for start in pygame.event.get():
        if start.type == pygame.QUIT:
            gameEnd = True   
        if start.type == pygame.KEYDOWN:
            if start.key == pygame.K_LEFT:
                lead_x -= 10
            if start.key == pygame.K_RIGHT:
                lead_x += 10

    # clear window
    gameDisplay.fill(white)

    # draw rectangle at the current position (lead_x, lead_y)
    pygame.draw.rect(gameDisplay, black, [lead_x,lead_y,10,10])

    # update the display
    pygame.display.update()

Upvotes: 3

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