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How to make a wall tilemap?

i'm making a game but i want to make the game harder by adding walls. I found out it's called a tilemap. But it's for multiple colours, i just want one color, grey. I want it to be something like 1,1,1,1,
1,0,0,1,
1,0,0,1,
1,1,1,1
0 = nothing. 1 = grey rectangle. I also need it to be like WIDTH = 16
HEIGHT = 9
TILESIZE = dw/WIDTH
but i can't find a way to implement it.
i tried using a def code but it lagged out my game. And i tried using this site: http://usingpython.com/pygame-tilemaps/
import pygame
import os
import sys
pygame.mixer.pre_init()
pygame.mixer.init(44100, 16, 2, 262144)
pygame.init()
from pygame.locals import*
import cv2
import time
import random
import pickle
import shutil
grey = (128,128,128)
def pause():
paused = True
while paused:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_ESCAPE:
paused = False
elif event.key == pygame.K_SPACE:
menu(1)
screen.fill(white)
mts("Paused", black, -100, 100)
mts("Press esc to go back to the game or press space to go back to the menu", black, 25, 45)
pygame.display.update()
clock.tick(60)
def score(score):
text = pygame.font.Font('Fonts/Kuiper_Belt.otf', 25).render("Score: "+str(score), True, black)
screen.blit(text, [0,0])
def highscore(highscore):
text = pygame.font.Font('Fonts/Kuiper_Belt.otf', 25).render("Highscore: "+str(highscore), True, black)
screen.blit(text, [1100,0])
#define the apple to spawn in a random place
def randAppleGen():
randAppleX = random.randrange(0, dw-at, bs)
randAppleY = random.randrange(0, dh-at, bs)
return randAppleX,randAppleY
def snake(bs, sl):
for XnY in sl:
pygame.draw.rect(screen, Dgreen, [XnY[0],XnY[1],bs,bs])
def text_objects(text,color,fontS):
font = pygame.font.Font('Fonts/Kuiper_Belt.otf', fontS)
textSurface = font.render(text, True, color)
return textSurface, textSurface.get_rect()
def mts(msg,color, y_displace=0, fs=35):
textSurf, textRect = text_objects(msg,color,fs)
textRect.center = (dw / 2), (dh / 2)+y_displace
screen.blit(textSurf, textRect)
def gameLoop():
global at
global bs
hs = pickle.load( open( os.getenv('APPDATA')+str('/Snake Universe/h.SNUN'), "rb" ) )
gameExit = False
gameOver = False
gameHack = False
tilemap = [
[1,1,1,1],
[1,0,0,1],
[1,0,0,1],
[1,1,1,1]
]
WIDTH = 4
HEIGHT = 4
TILESIZE = dw/WIDTH
Speed = 20
lead_x = dw/2
lead_y = dh/2
lead_x_change = 0
lead_y_change = 0
pygame.mixer.music.load(os.path.join(os.getcwd(), 'Sounds', 'music1.ogg'))
pygame.mixer.music.play(-1)
slist = []
sl = 0
if sl > 2304:
gameHack = True
randAppleX,randAppleY = randAppleGen()
while not gameExit:
for row in range(HEIGHT):
for column in range(WIDTH):
if tilemap[row][column] == 1:
pygame.draw.rect(screen, grey, (column*TILESIZE, row*TILESIZE, TILESIZE, TILESIZE))
while gameOver == True:
screen.fill(white)
mts("Game over", red, -50,100)
mts("Press enter to play again or press space to go back to the menu", black, 50,50)
pygame.display.update()
for event in pygame.event.get():
if event.type == pygame.QUIT:
gameOver = False
gameExit = True
pygame.quit()
sys.exit()
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_KP_ENTER or event.key==pygame.K_RETURN:
gameLoop()
if event.key == pygame.K_SPACE:
gameExit = False
gameOver = False
menu(1)
while gameHack == True:
pygame.mixer.music.stop()
screen.fill(white)
mts("Hacked", red, -50,100)
mts("You hacked or exploit the game, press enter to quit the game", black, 50,50)
pygame.display.update()
for event in pygame.event.get():
if event.type == pygame.QUIT:
gameOver = False
gameExit = True
pygame.quit()
sys.exit()
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_KP_ENTER or event.key==pygame.K_RETURN:
pygame.quit()
sys.exit()
lead_x += lead_x_change
lead_y += lead_y_change
prev_x, prev_y = lead_x_change, lead_y_change
for event in pygame.event.get():
if event.type == pygame.QUIT:
gameExit = True
pygame.quit()
sys.exit()
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_LEFT and prev_x != bs:
lead_x_change, lead_y_change = -bs, 0
elif event.key == pygame.K_RIGHT and prev_x != -bs:
lead_x_change, lead_y_change = bs, 0
elif event.key == pygame.K_UP and prev_y != bs:
lead_x_change, lead_y_change = 0, -bs
elif event.key == pygame.K_DOWN and prev_y != -bs:
lead_x_change, lead_y_change = 0, bs
elif event.key == pygame.K_ESCAPE:
pause()
elif event.key == pygame.K_s and Speed >= 10 and Speed < 60:
Speed += 10
clock.tick(Speed)
elif event.key == pygame.K_d and Speed <= 60 and Speed > 10:
Speed -= 10
clock.tick(Speed)
elif event.key == pygame.K_a:
sl += 1
if not pygame.Rect(0, 0, dw, dh).contains(lead_x, lead_y, bs, bs):
gameOver = True
screen.fill(white)
#draw the apple
apple = pygame.draw.rect(screen, red, [randAppleX,randAppleY,at,at])
sh = []
sh.append(lead_x)
sh.append(lead_y)
slist.append(sh)
snake(bs, slist)
if len(slist) > sl:
del slist[0]
for eachSegment in slist[:-1]:
if eachSegment == sh:
gameOver = True
score(sl)
highscore(hs)
if sl > hs:
hs += 1
os.remove( os.getenv('APPDATA')+str('/Snake Universe/h.SNUN') )
pickle.dump( sl, open( os.getenv('APPDATA')+str('/Snake Universe/h.SNUN'), "wb" ) )
hs = pickle.load( open( os.getenv('APPDATA')+str('/Snake Universe/h.SNUN'), "rb" ) )
pygame.display.update()
#make the apple spawn
appleRect = pygame.Rect(randAppleX, randAppleY, at, at)
if appleRect.collidepoint(lead_x, lead_y):
while True:
randAppleX, randAppleY = randAppleGen()
appleRect = pygame.Rect(randAppleX, randAppleY, at, at)
if not appleRect.collidepoint(lead_x, lead_y) and \
not any(appleRect.collidepoint(*p) for p in slist):
break
sl += 1
clock.tick(Speed)
pygame.quit()
sys.quit()
I expect it to display a single color tile map, but i keep on getting crashes.

I don't understand why you have problem if you already have it in code and you have example in your link.
tilemap = [
[1,1,1,1],
[1,0,0,1],
[1,0,0,1],
[1,1,1,1]
]
MAPHEIGHT = 4
MAPWIDTH = 4
TILESIZE = dw/MAPWIDTH
GREY = (128,128,128)
for row in range(MAPHEIGHT):
for column in range(MAPWIDTH):
if tilemap[row][column] == 1:
pygame.draw.rect(screen, GREY, column*TILESIZE, row*TILESIZE, TILESIZE, TILESIZE))
EDIT:
You have problem because you use it in wrong place. You have to draw between screen.fill (which clears buffer) and pygame.update (which sends buffer to video card and it displays it on screen)
screen.fill(white)
for row in range(HEIGHT):
for column in range(WIDTH):
if tilemap[row][column] == 1:
pygame.draw.rect(screen, grey, (column*TILESIZE, row*TILESIZE, TILESIZE, TILESIZE))
# ... draw other things ...
pygame.display.update()
You have mess in code. You should have
place where you update values, move object, crate/respaw object, load/save pickle, etc. but don't draw there.
place where you use screen.fill, draw all elements, use pygame.display.update but don't update object and don't load/save pickle
EDIT:
My version (with better names of variables and functions)
import pygame
import os
import sys
import random
import pickle
# --- constants --- (UPPERCASE names)
WHITE = ( 0, 0, 0)
RED = (255, 0, 0)
BLACK = (255, 255, 255)
GREEN = (255, 0, 0)
GREY = (128, 128, 128)
DISPLAY_WIDTH = 1200
DISPLAY_HEIGHT = 800
APPDATA = os.getenv('APPDATA', '')
PICKLE_PATH = os.path.join(APPDATA, 'Snake Universe', 'h.SNUN')
WIDTH = 4
HEIGHT = 4
TILE_SIZE = DISPLAY_WIDTH/WIDTH
BLOCK_SIZE = 20
# --- functions ---
def pause():
paused = True
while paused:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_ESCAPE:
paused = False
elif event.key == pygame.K_SPACE:
menu(1)
screen.fill(WHITE)
mts("Paused", BLACK, -100, 100)
mts("Press esc to go back to the game or press space to go back to the menu", BLACK, 25, 45)
pygame.display.update()
clock.tick(60)
def text_object(text, color=BLACK, font_size=25):
font = pygame.font.SysFont(None, font_size)
surface = font.render(text, True, color)
rect = surface.get_rect()
return surface, rect
def draw_score(screen, score):
surface, rect = text_object("Score: " + str(score))
screen.blit(surface, (0, 0))
def draw_highscore(screen, highscore):
surface, rect = text_object("Highscore: " + str(highscore))
screen.blit(surface, (1100, 0))
def rand_apple_pos():
x = random.randrange(0, DISPLAY_WIDTH - BLOCK_SIZE, BLOCK_SIZE)
y = random.randrange(0, DISPLAY_HEIGHT - BLOCK_SIZE, BLOCK_SIZE)
return x, y
def draw_snake(screen, snake):
for x, y in snake:
pygame.draw.rect(screen, GREEN, (x, y, BLOCK_SIZE, BLOCK_SIZE))
def mts(msg, color, y_displace=0, fs=35):
surface, rect = text_object(msg, color, fs)
rect.center = (DISPLAY_WIDTH / 2), (DISPLAY_HEIGHT / 2) + y_displace
screen.blit(surface, rect)
def game_loop(screen):
highscore = 0
#highscore = pickle.load(open(PICKLE_PATH, "rb" ))
game_exit = False
game_over = False
game_hack = False
speed = 10
lead_x = DISPLAY_WIDTH/2
lead_y = DISPLAY_HEIGHT/2
lead_x_change = 0
lead_y_change = 0
#pygame.mixer.music.load(os.pBLOCK_SIZEh.join(os.getcwd(), 'Sounds', 'music1.ogg'))
#pygame.mixer.music.play(-1)
snake = [(100, 100)]
score = 0
apple_x, apple_y = rand_apple_pos()
apple_rect = pygame.Rect(apple_x, apple_y, BLOCK_SIZE, BLOCK_SIZE)
clock = pygame.time.Clock()
while not game_exit:
while game_over == True:
screen.fill(WHITE)
mts("Game over", RED, -50,100)
mts("Press enter to play again or press space to go back to the menu", BLACK, 50,50)
pygame.display.update()
for event in pygame.event.get():
if event.type == pygame.QUIT:
game_over = False
game_exit = True
pygame.quit()
sys.exit()
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_KP_ENTER or event.key==pygame.K_RETURN:
#gameLoop()
game_over = False
if event.key == pygame.K_SPACE:
game_exit = False
game_over = False
menu(1)
while game_hack == True:
pygame.mixer.music.stop()
screen.fill(WHITE)
mts("Hacked", RED, -50, 100)
mts("You hacked or exploit the game, press enter to quit the game", BLACK, 50,50)
pygame.display.update()
for event in pygame.event.get():
if event.type == pygame.QUIT:
game_over = False
game_exit = True
pygame.quit()
sys.exit()
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_KP_ENTER or event.key==pygame.K_RETURN:
pygame.quit()
sys.exit()
lead_x += lead_x_change
lead_y += lead_y_change
prev_x, prev_y = lead_x_change, lead_y_change
# --- events ---
for event in pygame.event.get():
if event.type == pygame.QUIT:
game_exit = True
pygame.quit()
sys.exit()
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_LEFT and prev_x != BLOCK_SIZE:
lead_x_change, lead_y_change = -BLOCK_SIZE, 0
elif event.key == pygame.K_RIGHT and prev_x != -BLOCK_SIZE:
lead_x_change, lead_y_change = BLOCK_SIZE, 0
elif event.key == pygame.K_UP and prev_y != BLOCK_SIZE:
lead_x_change, lead_y_change = 0, -BLOCK_SIZE
elif event.key == pygame.K_DOWN and prev_y != -BLOCK_SIZE:
lead_x_change, lead_y_change = 0, BLOCK_SIZE
elif event.key == pygame.K_ESCAPE:
pause()
elif event.key == pygame.K_s and speed >= 10 and speed < 60:
speed += 10
clock.tick(speed)
elif event.key == pygame.K_d and speed <= 60 and speed > 10:
speed -= 10
clock.tick(speed)
elif event.key == pygame.K_a:
score += 1
# --- moves ---
if not pygame.Rect(0, 0, DISPLAY_WIDTH, DISPLAY_HEIGHT).contains(lead_x, lead_y, BLOCK_SIZE, BLOCK_SIZE):
game_over = True
if apple_rect.collidepoint(lead_x, lead_y):
while True:
apple_x, apple_y = rand_apple_pos()
# update existing Rect without creating new Rect
apple_rect.x = apple_x
apple_rect.y = apple_x
if not apple_rect.collidepoint(lead_x, lead_y) and \
not any(apple_rect.collidepoint(*pos) for pos in snake):
break
score += 1
# update snake
snake.append( (lead_x, lead_y) )
if len(snake) > score:
del snake[0]
for segment in snake[:-1]:
if segment == snake[-1]:
game_over = True
if score > highscore:
#pickle.dump(score, open(PICKLE_PATH, "wb"))
highscore = score
if score > 2304:
game_hack = True
# --- draw ---
screen.fill(WHITE)
#draw_wall(screen)
for row in range(HEIGHT):
for column in range(WIDTH):
if tilemap[row][column] == 1:
pygame.draw.rect(screen, GREY, (column*TILE_SIZE, row*TILE_SIZE, TILE_SIZE, TILE_SIZE))
draw_snake(screen, snake)
#draw the apple
#draw_apple(screen, apple)
pygame.draw.rect(screen, RED, apple_rect)
draw_score(screen, score)
draw_highscore(screen, highscore)
pygame.display.update()
clock.tick(speed)
# --- end ---
pygame.quit()
sys.quit()
# --- variables ---
tilemap = [
[1,1,1,1,1,1,1,1,1,1,1,1],
[1,0,0,1,1,0,0,1,1,0,0,1],
[1,0,0,1,1,0,0,1,1,0,0,1],
[1,0,0,1,1,0,0,1,1,0,0,1],
[1,0,0,1,1,0,0,1,1,0,0,1],
[1,0,0,1,1,0,0,1,1,0,0,1],
[1,0,0,1,1,0,0,1,1,0,0,1],
[1,1,1,1,1,1,1,1,1,1,1,1],
]
HEIGHT = len(tilemap)
WIDTH = len(tilemap[0])
# --- main ---
pygame.mixer.pre_init()
pygame.mixer.init(44100, 16, 2, 262144)
pygame.init()
screen = pygame.display.set_mode((DISPLAY_WIDTH, DISPLAY_WIDTH))
game_loop(screen)

Pygame function error bug

I can't seem to the error in this code, the game simply quits right after launching it. If anybody could read through my code and answer me what I'm doing wrong, and I'd be very grateful. I've already read through all of it and couldn't figure it out. I don't know why the game quits right after launching it. (Meaning I can't even move my block).
import pygame
import time
pygame.init()
width = 800
height = 600
white = (255, 255, 255)
black = (0, 0, 0)
red = (255, 0, 0)
gameDisplay = pygame.display.set_mode((width, height))
pygame.display.set_caption("First snake game.")
clock = pygame.time.Clock()
block_size = 1
FPS = 100
def gameloop():
gameExit = False
lead_x = width/2
lead_y = height/2
lead_x_change = 0
lead_y_change = 0
while not gameExit:
for event in pygame.event.get():
if event.type == pygame.QUIT:
gameExit = True
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_w:
lead_y_change = -block_size
lead_x_change = 0
if event.key == pygame.K_s:
lead_y_change = block_size
lead_x_change = 0
if event.key == pygame.K_d:
lead_x_change = block_size
lead_y_change = 0
if event.key == pygame.K_a:
lead_x_change = -block_size
lead_y_change = 0
if event.type == pygame.KEYUP:
if event.key == pygame.K_a or event.key == pygame.K_d:
lead_x_change = 0
if event.key == pygame.K_w or event.key == pygame.K_s:
lead_y_change = 0
lead_x += lead_x_change
lead_y += lead_y_change
gameDisplay.fill(white)
pygame.draw.rect(gameDisplay, black, [lead_x, lead_y, block_size, block_size])
pygame.display.update()
time.sleep(2)
pygame.quit()
quit()
clock.tick(FPS)
gameloop()
`

Not sure if I'm understanding the code correctly or not, but at the end of the gameloop() function you have pygame.quit() and quit() so comment that out and see what happens.

Python Snake Game Boundries not working

I'm new to python and I'm trying following along with a tutorial that uses PyGame to create a snake like game. For some reason my boundaries are not working. It may be something simple but I can't see any reason why it wouldn't work. I don't get any errors, the snake just goes past the boundaries and the game doesn't end.
import pygame
import time
import random
pygame.init()
white = (255,255,255)
black = (0,0,0)
red = (255,0,0)
display_width = 800
display_height = 600
gameDisplay = pygame.display.set_mode((display_width,display_height))
pygame.display.set_caption('Slither')
clock = pygame.time.Clock()
block_size = 10
FPS = 30
font = pygame.font.SysFont(None, 25)
def message_to_screen(msg,color):
screen_text = font.render(msg, True, color)
gameDisplay.blit(screen_text, [display_width/2, display_height/2])
def gameLoop():
gameExit = False
gameOver = False
lead_x = display_width/2
lead_y = display_height/2
lead_x_change = 0
lead_y_change = 0
randAppleX = random.randrange (0, display_width-block_size)
randAppleY = random.randrange (0, display_height-block_size)
while not gameExit:
while gameOver == True:
gameDisplay.fill(white)
message_to_screen("Game over, press C to play again or Q to quit", red)
pygame.display.update()
for event in pygame.event.get():
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_q:
gameExit = True
gameOver = False
if event.key == pygame.K_c:
gameLoop()
for event in pygame.event.get():
if event.type == pygame.QUIT:
gameExit = True
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_LEFT:
lead_x_change = -block_size
lead_y_change = 0
elif event.key == pygame.K_RIGHT:
lead_x_change = block_size
lead_y_change = 0
elif event.key == pygame.K_UP:
lead_y_change = -block_size
lead_x_change = 0
elif event.key == pygame.K_DOWN:
lead_y_change = block_size
lead_X_change = 0
**if lead_x >= display_width or lead_x < 0 or lead_y >= display_height or lead_y < 0:
gameOver == True #boundaries**
lead_x += lead_x_change
lead_y += lead_y_change
gameDisplay.fill(white)
pygame.draw.rect(gameDisplay, red, [randAppleX, randAppleY, block_size, block_size])
pygame.draw.rect(gameDisplay, black, [lead_x , lead_y, block_size, block_size])
pygame.display.update()
clock.tick(FPS)
message_to_screen("You Lose", red)
pygame.display.update()
time.sleep(2)
pygame.quit()
quit()
gameLoop()

In your exit condition, you're using the equality comparison, not the assignment operator:
if lead_x >= display_width or lead_x < 0 or lead_y >= display_height or lead_y < 0:
gameOver == True #boundaries
in the above,
gameOver == True
should be
gameOver = True

Pygame Help Trying to add apples in Snakegame

import pygame
import random
import time
pygame.init()
display_width = 800
display_height = 600
gameDisplay = pygame.display.set_mode((display_width, display_height))
pygame.display.set_caption('slither')
white = (255, 255, 255)
black = (0,0,0)
red = (252,25,25)
blue = (20,20,250)
purple = (90,33,146)
movement_size = 10
block_size = 20
clock = pygame.time.Clock()
font = pygame.font.SysFont(None, 25)
def message_to_screen(msg,colour):
screen_text = font.render(msg, True, colour)
gameDisplay.blit(screen_text, [display_width/2, display_height/2])
def gameLoop():
gameExit = False
gameOver = False
lead_x = display_width/2.0
lead_y = display_height/2.0
lead_x_change = 0
lead_y_change = 0
randAppleX = random.randrange(0, display_width-block_size)
randAppleY = random.randrange(display_height-block_size, 0)
while not gameExit:
while gameOver == True:
gameDisplay.fill(purple)
message_to_screen("Game Over, Press 'C' to play again or 'Q' to Quit", red)
pygame.display.update()
for event in pygame.event.get():
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_q:
gameExit = True
gameOver = False
if event.key == pygame.K_c:
gameLoop()
for event in pygame.event.get():
if event.type == pygame.QUIT:
gameExit = True
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_LEFT:
lead_x_change -= movement_size
lead_y_change = 0
elif event.key == pygame.K_RIGHT:
lead_x_change += movement_size
lead_y_change= 0
elif event.key == pygame.K_UP:
lead_y_change -= movement_size
lead_x_change= 0
elif event.key == pygame.K_DOWN:
lead_y_change += movement_size
lead_x_change= 0
if lead_x >= 782 or lead_x < 0 or lead_y >= 582 or lead_y < 0:
gameOver = True
lead_x += lead_x_change
lead_y += lead_y_change
gameDisplay.fill(white)
pygame.draw.rect(gameDisplay, red, [randAppleX, randAppleY, block_size, block_size])
pygame.draw.rect(gameDisplay, black, [lead_x, lead_y, block_size, block_size])
pygame.display.update()
clock.tick(11)
pygame.quit()
quit()
gameLoop()
I was trying to add 'apples' in my snake game. However I was troubled in doing so. Any help debugging code would be very much appreciated! I'm getting some error on lines; 94,42 and 218 something has gone horribly wrong with the randrange stuff.
http://i63.tinypic.com/1h4ggj.png <----- To See

the error happens in
randAppleY = random.randrange(display_height-block_size, 0)
As the error stack trace indicates that randrange function got parameters start=580, stop=0. From inspecting the source file for this function shows that the default value for step is 1.
This is causing the problem as 0 is less than 580 and connot be reached by adding 1 (step parameter) any number of times.
What you can do to fix this is either pass step parameter as -1
randAppleY = random.randrange(display_height-block_size, 0, -1)
Or pass the smaller value as start and larger value as stop parameter
randAppleY = random.randrange(0, display_height-block_size)

import pygame
import random
import time
pygame.init()
display_width = 800
display_height = 600
gameDisplay = pygame.display.set_mode((display_width, display_height))
pygame.display.set_caption('slither')
white = (255, 255, 255)
black = (0,0,0)
red = (252,25,25)
blue = (20,20,250)
purple = (90,33,146)
movement_size = 10
block_size = 20
clock = pygame.time.Clock()
gameExit = gameOver = False
font = pygame.font.SysFont(None, 25)
def message_to_screen(msg,colour):
screen_text = font.render(msg, True, colour)
gameDisplay.blit(screen_text, [display_width/2, display_height/2])
def gameLoop():
gameExit = False
gameOver = False
lead_x = display_width/2.0
lead_y = display_height/2.0
lead_x_change = 0
lead_y_change = 0
randAppleX = random.randint(0, display_width-block_size)
randAppleY = random.randint(0,display_height-block_size)
while not gameExit:
while gameOver:
gameDisplay.fill(purple)
message_to_screen("Game Over, Press 'C' to play again or 'Q' to Quit", red)
pygame.display.update()
for event in pygame.event.get():
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_q:
gameExit = True
gameOver = False
if event.key == pygame.K_c:
gameLoop()
for event in pygame.event.get():
if event.type == pygame.QUIT:
gameExit = True
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_LEFT:
lead_x_change -= movement_size
lead_y_change = 0
elif event.key == pygame.K_RIGHT:
lead_x_change += movement_size
lead_y_change= 0
elif event.key == pygame.K_UP:
lead_y_change -= movement_size
lead_x_change= 0
elif event.key == pygame.K_DOWN:
lead_y_change += movement_size
lead_x_change= 0
if lead_x >= 782 or lead_x < 0 or lead_y >= 582 or lead_y < 0:
gameOver = True
lead_x += lead_x_change
lead_y += lead_y_change
gameDisplay.fill(white)
pygame.draw.rect(gameDisplay, red, [randAppleX, randAppleY, block_size, block_size])
pygame.draw.rect(gameDisplay, black, [lead_x, lead_y, block_size, block_size])
pygame.display.update()
clock.tick(11)
pygame.quit()
quit()
gameLoop()

Pygame won't print text in certain circumstances

So I'm trying to print "you lose" to the screen when the user moves a box off the playable screen, however this doesn't seem to work unless I call it from outside my main while loop. I have defined a function to handle the creation of the text, the rendering and 'blit'ing of it, although this has no effect when it is called from inside the while loop however it does when it is called from outside it at the bottom. I have checked and the function is executed from both locations, though it only seems to work from one.
import pygame
import time
pygame.init()
red = (255,0,0)
black = (0,0,0)
white = (255,255,255)
gamewidth = 900
gameheight = 900
snakecolour = black
gameDisplay = pygame.display.set_mode((gamewidth,gameheight))
pygame.display.set_caption("Snake")
gameExit = False
boxDimensions = 10
lead_x = (gamewidth // 2) - ((gamewidth // 2) % 20)
lead_y = (gameheight // 2) - ((gameheight // 2) % 20)
lead_x_change = 0
lead_y_change = 0
clock = pygame.time.Clock()
font = pygame.font.SysFont(None, 25)
def message_to_screen(msg, color):
screen_text = font.render(msg, True, color)
gameDisplay.blit(screen_text, [gamewidth//2, gameheight//2])
while not gameExit:
for event in pygame.event.get():
if event.type == pygame.QUIT:
gameExit = True
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_LEFT:
if not (lead_x_change == boxDimensions):
lead_x_change = -boxDimensions
lead_y_change = 0
elif event.key == pygame.K_RIGHT:
if not (lead_x_change == -boxDimensions):
lead_x_change = boxDimensions
lead_y_change = 0
elif event.key == pygame.K_UP:
if not (lead_y_change == boxDimensions):
lead_y_change = -boxDimensions
lead_x_change = 0
elif event.key == pygame.K_DOWN:
if not (lead_y_change == -boxDimensions):
lead_y_change = boxDimensions
lead_x_change = 0
lead_x += lead_x_change
lead_y += lead_y_change
if lead_x > gamewidth or lead_x < 0 or lead_y > gameheight or lead_y < 0:
snakecolour = red
gameExit = True
message_to_screen("You Lose!", red)
pygame.display.update()
#message_to_screen("You Lose!", red) WONT WORK HERE
if lead_x > gamewidth:
lead_x = gamewidth - boxDimensions
lead_x_change = 0
elif lead_x < 0:
lead_x = 0
lead_x_change = 0
elif lead_y > gameheight:
lead_y = gameheight - boxDimensions
elif lead_y < 0:
lead_y = 0
lead_y_change = 0
gameDisplay.fill(white)
pygame.draw.rect(gameDisplay, snakecolour, [lead_x,lead_y,boxDimensions,boxDimensions])
pygame.display.update()
clock.tick(15)
#message_to_screen("You Lose!", red) DOES WORK HERE
#pygame.display.update()
time.sleep(3)
pygame.quit()

message_to_screen("YOU LOSE!",(255,0,0))
pygame.display.update()
sleep(3)
From AirThomas comment, this is working. Outside of the while loop, put this statement.
For score board:
text = pygame.font.SysFont("None", 30)
score=0
text1=text.render("{}".format(score), True,(255,255,255))
while running:
screen.fill((0, 0, 0))
#codes
#codes
#codes
if sneakeatssomething:
score += 1
text1=text.render("{}".format(score), True,(255,255,255)) #rendering the score again
#codes
#codes
screen.blit(text1,(275,6))#showing the score
pygame.display.flip()
clock.tick(150)
This is updating the score when sneak eats and printing it to the pygame screen