How do i blit multiple same images but at different coordinates?

Question

im trying to create a game where multiple of the same images will blit randomly along the borders of my window. but I do not know how to blit it multiple times and also along the borders. Here's the code so far:

import pygame, sys

from pygame.locals import *
import random

pygame.init()
DisplayWidth = 700
DisplayHeight = 400
Display = pygame.display.set_mode((DisplayWidth, DisplayHeight))
Death = False
  
  
def PlaceElon():
  ElonX = random.randrange(0, 700, 700)
  ElonY = random.randrange(0, 400)
  x = []
  y = []
  Elonlist = [x, y]
  elon = pygame.image.load('elon.png')
  elonbig = pygame.transform.smoothscale(elon, (50, 54))
  for x in Elonlist:
    x.append(ElonX)
  for y in Elonlist:
    y.append(ElonY)
  Display.blit(elonbig, (Elonlist))
  pygame.display.update()
  
  
def RunGame():
  while not Death:
    background = pygame.image.load('background.png')
    BigBackground = pygame.transform.smoothscale(background, (DisplayWidth, DisplayHeight))
    Display.blit(BigBackground, (0,0))
    PlaceElon()
    
RunGame()

user_5577765 · Answer

You need to generate a list of coordinates:

Elonlist = []
noOfElons = 10
for _ in range(noOfElons)
    x = random.randrange(0, 700 - elon.get_width())
    y = random.randrange(0, 400 - elon.get_height())
    Elonlist.appned((x, y))

Draw the images in a loop:

for ElonPos in Elonlist:
    Display.blit(elon, ElonPos)

However there are some more problems in your application.

Generate the positions and load the images before the application loop:

background = pygame.image.load('background.png')
BigBackground = pygame.transform.smoothscale(background, (DisplayWidth, DisplayHeight))
elon = pygame.image.load('elon.png')

The typical PyGame application loop has to:

handle the events by 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 either pygame.display.update() or pygame.display.flip()
limit frames per second to limit CPU usage

# main application loop
run = True
while run:

    # limit frames per second
    clock.tick(60)

    # event loop
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            run = False

    # draw background
    Display.blit(BigBackground, (0,0))

    # draw the scene   
    for elonPos in Elonlist:
        Display.blit(elon, elonPos)

    # update the display
    pygame.display.flip()

pygame.quit()
exit()

How do i blit multiple same images but at different coordinates?

1 Answers