This scripts shows you how many sprites you can handle with pygame.
import os
from random import randrange
# Imports organized in order to work both with Pygame and Pyjsdl
try:
import pygame as pg
from pygame.math import Vector2
platform = "standalone"
res_dir = "public"
except ImportError:
import pyjsdl as pg
from pyjsdl.vector import Vector2
platform = "web"
res_dir = ""
from fps_counter import FPSCounter
from widgets import Button, Label, HBox, VBox, Widget
from sprite import RandomSprite
class Game:
def __init__(self, screen_size, max_fps):
self.screen_size = screen_size
self.max_fps = max_fps
self.img = None
self.sprites = []
self.sprites_moving = True
self.fps_counter = FPSCounter()
self.running = True
pg.init()
self.clock = pg.time.Clock()
self.screen = pg.display.set_mode(screen_size)
pg.display.set_caption("Snake mark")
# Create some UI
self.ui_root = Widget(None, 0, 0, self.screen_size.x, self.screen_size.y)
hbox = HBox(self.ui_root, h_anchor="right")
Button(hbox, "+ 100", lambda: self.add_sprites(100))
Button(hbox, "- 100", lambda: self.remove_sprites(100))
self.toggle_btn = Button(hbox, "Stop", self.toggle_moving)
Button(hbox, "Clear", self.clear)
hbox.layout()
vbox = VBox(self.ui_root, spacing=0, h_anchor="left")
self.fps_label = Label(vbox, "FPS:", w=120)
self.sprite_count_label = Label(vbox, "Sprites:", w=120)
vbox.layout()
if platform == "web":
pg.setup(self.web_init,["snake.png"])
else:
self.prerun()
while self.running:
self.game_loop()
def add_sprites(self, num):
for _ in range(0, num):
spr = RandomSprite(
self.img, 0, 0, self.screen_size.x, self.screen_size.y, -100, 100
)
self.sprites.append(spr)
def remove_sprites(self, num):
if len(self.sprites) >= num:
self.sprites = self.sprites[num:]
def toggle_moving(self):
if self.sprites_moving:
self.sprites_moving = False
self.toggle_btn.set_text("Move")
else:
self.sprites_moving = True
self.toggle_btn.set_text("Stop")
def clear(self):
self.sprites = []
def prerun(self):
# Convert image for better performance
# self.img = pg.image.load(os.path.join(res_dir, "snake.png"))
# self.img = pg.image.load(os.path.join(res_dir, "snake.png")).convert()
self.img = pg.Surface((10, 10))
pg.draw.circle(self.img, (0,255,255), (5,5), 5, 2)
self.img.set_colorkey((0,0,0))
# self.img.fill((255,0,0))
# Scale it 2 times
# self.img = pg.transform.scale2x(self.img)
self.add_sprites(100)
def web_init(self):
self.prerun()
pg.set_callback(self.game_loop)
def game_loop(self):
for e in pg.event.get():
if e.type == pg.QUIT or e.type == pg.KEYDOWN and e.key == pg.K_ESCAPE:
pg.quit()
self.running = False
self.screen.fill((0, 0, 0))
dt = self.clock.get_time() / 1000
for spr in self.sprites:
if self.sprites_moving:
spr.update(dt)
spr.draw(self.screen)
for e in self.ui_root.children:
e.update(dt)
e.draw(self.screen)
self.fps_counter.update(dt)
# Pyjsdl doesn't support Python 3 string interpolation
self.sprite_count_label.set_text("Sprites: {}".format(len(self.sprites)))
self.fps_label.set_text("FPS: {}".format(self.fps_counter.get_fps()))
pg.display.flip()
self.clock.tick(self.max_fps)
if __name__ == "__main__":
screen_size = Vector2(800, 600)
max_fps = 60
game = Game(screen_size, max_fps)
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