In simple words my spawning system doesnt work
I am making a dodge the blocks game and I want 1 out of 5 spawnpoints to be empty so that the player can dodge the others. Of course that spawnpoint is random. I tried changing the numbers and looking at some of my older and similar games but nothing works
EDIT: I posted the other 2 files so that you can run the game. I dont think that they are part of the problem since they don't contain anything related to the spawning process
Here my main file:
import pygame as pg
import random
from sprites import *
from game_options import *
class Game:
def __init__(self):
pg.init()
pg.mixer.init()
self.screen = pg.display.set_mode((WIDTH, HEIGHT))
pg.display.set_caption("BRUH")
self.clock = pg.time.Clock()
self.running = True
def new(self):
self.SPAWNENEMIES = 1
self.my_event = pg.event.Event(self.SPAWNENEMIES)
pg.event.post(self.my_event)
pg.time.set_timer(self.SPAWNENEMIES, 3000)
self.spawnpoint1 = 20, -80
self.spawnpoint2 = 140, -80
self.spawnpoint3 = 260, -80
self.spawnpoint4 = 380, -80
self.spawnpoint5 = 500, -80
self.spawnpoints = (self.spawnpoint1,self.spawnpoint2,self.spawnpoint3,self.spawnpoint4,self.spawnpoint5)
self.all_sprites = pg.sprite.Group()
self.blocks = pg.sprite.Group()
self.player = Player()
self.all_sprites.add(self.player)
self.all_sprites.add(self.blocks)
g.run()
def run(self):
self.running = True
while self.running:
self.clock.tick(FPS)
self.events()
self.update()
self.draw()
def update(self):
self.all_sprites.update()
def events(self):
for event in pg.event.get():
if event.type == pg.QUIT:
self.running = False
if event.type == self.SPAWNENEMIES:
num = random.randint(0,len(self.spawnpoints))
#print(num)
for i in range(5):
if num != i:
print(i)
self.block = Block(self.spawnpoints[i])
self.blocks.add(self.block)
self.all_sprites.add(self.blocks)
dead_blocks = pg.sprite.spritecollide(self.player, self.blocks, True)
# if dead_blocks:
# self.running = False
def draw(self):
self.screen.fill(MY_RED)
self.all_sprites.draw(self.screen)
pg.display.flip()
g = Game()
while g.running:
g.new()
g.quit()
Here is game_options.py:
WIDTH = 580
HEIGHT = 800
FPS = 30
# Simple colors
WHITE = (255,255,255)
BLACK = (0,0,0)
GREEN = (0,255,0)
BLUE = (0,0,255)
RED = (255,0,0)
MY_RED = (255, 67, 67)
GREY = (108,106,106)
and the sprites.py
import pygame as pg
from game_options import *
class Player(pg.sprite.Sprite):
def __init__(self):
pg.sprite.Sprite.__init__(self)
self.image = pg.Surface((70,70))
self.image.fill(WHITE)
self.rect = self.image.get_rect()
self.rect.center = (WIDTH/2, HEIGHT - 100)
self.speedx = 0
def update(self):
keystate = pg.key.get_pressed()
if keystate[pg.K_LEFT]:
self.speedx += -30
if keystate[pg.K_RIGHT]:
self.speedx += 30
self.rect.x = self.speedx
class Block(pg.sprite.Sprite):
def __init__(self,position):
pg.sprite.Sprite.__init__(self)
self.image = pg.Surface((100,70))
self.image.fill(GREY)
self.rect = self.image.get_rect()
self.rect.center = position
self.speedy = 20
def update(self):
self.rect.y += self.speedy
if self.rect.x > HEIGHT:
self.kill()
I expected to have 1 out of 5 spawnpoints empty but for some reason when I run the game, the first "wave" of sprites always has no empty space. Meanwhile the game continues with the expected results. No error messages
Any help would be appreciated
the first "wave" of sprites always has no empty space
This is due to:
self.SPAWNENEMIES = 1
Change it to:
self.SPAWNENEMIES = pg.USEREVENT
The id of the event is an integer. The pygame event system use a set of integers to identify ordinary actions (mouse motion or button clicks, key press and so on). As the docs says:
User defined events should have a value in the inclusive range of USEREVENT to NUMEVENTS - 1.
You should not define self.SPAWNENEMIES equal to 1, because 1 is reserved another type of event (not sure which one actually), this creates confusion and unexpected behaviour.
Seems that in your case yourv event in fact is posted multiple times, especially at the beginning, so you have two waves superimposed. Unless by chance both waves have the missing block at the same position, you'll see 5 blocks.
Another thing you should fix is:
num = random.randint(0,len(self.spawnpoints))
it should be:
num = random.randint(0,len(self.spawnpoints)-1)
or, alternatively:
num = random.randrange(0,len(self.spawnpoints))
The function random.randint:
Return a random integer N such that a <= N <= b. Alias for randrange(a, b+1).
The endpoint is inclusive.
You have 5 blocks, whose index goes from 0 to 4. When random.randint returns 5, no one of them is removed from the following spawning loop.