5. Sounds and Sprites¶

from browser import load, timer
load('../../_static/game.js')
load('../../_static/pygame.brython.js')

^^^^

# Sprites

import pygame
import random

# GLOBAL VARIABLES
COLOR = pygame.color.Color(255, 100, 98)
SURFACE_COLOR = pygame.color.Color(167, 255, 100)
WIDTH = 500
HEIGHT = 300

# Object class
class Sprite(pygame.sprite.Sprite):
   def __init__(self, color, height, width):
      super().__init__()

self.image = pygame.Surface([width, height])
      self.image.fill(SURFACE_COLOR)
      self.image.set_colorkey(COLOR)

pygame.draw.rect(self.image,color,pygame.Rect(0, 0, width, height))

self.rect = self.image.get_rect()

pygame.init()

RED = pygame.color.Color(255, 0, 0)

size = (WIDTH, HEIGHT)
screen = pygame.display.set_mode(size)
all_sprites_list = pygame.sprite.Group()

object_ = Sprite(RED, 50, 30)
object_.rect.x = 50
object_.rect.y = 50

all_sprites_list.add(object_)

def func():
   all_sprites_list.update()
   screen.fill(SURFACE_COLOR)
   all_sprites_list.draw(screen)
   pygame.display.flip()

timer.set_interval(func,60)

# set up the block data structure
player = pygame.Rect(300,100,40,40)
playerImage = pygame.image.load('player.png')
plyaerStretchedImage = pygame.transform.scale(playerImage(40,40))
foodImage = pygame.image.load('cherry.png')
foods = []
for i in range(20):
   foods.append(pygame.Rect(random.randint(0,WINDOWWIDTH - 20),random.randint(0,WINDOWHEIGHT - 20),20,20))

Player.png appears in the desired scale
Generate 20 initial cherries randomly

# set up music

pickUpSound = pygame.mixer.Sound('pickup.wav')
pygame.mixer.music.load('background.mid')
pygame.mixer.music.play(-1,0.0)
musicPlaying = True

Use two channels, one for background music and one for each picked cherry

if event.key == ord('m'):
   if musicPlaying:
      pygame.mixer.music.stop()
   else:
      pygame.mixer.music.play(-1,0,0)
   musicPlaying = not musicPlaying

if event.type == MOUSEBUTTONUP:
   foods.append(pygame.Rect(event.pos[0]-10,event.pos[1] - 10,20,20))

Key ‘m’ pauses or resumes background music and mouse click plants a cherry at clicked position

foodCounter += 1
if foodCounter >= NEWFOOD:
   #add new food
   foodCounter = 0
   foods.append(pygame.Rect(random.randint(0,WINDOWWIDTH-20),random.randint(0,WINDOWHEIGHT - 20),20,20))

Cherries are randomly generated with each pass in the main loop. principal

# check if the block has intersected with any food squares.
for food in foods[:]:
   if player.colliderect(food):
      foods.remove(food)
      player = pygame.Rect(player.left,player.top,player.right,player.down)
      playerStretchedImage = pygame.transform.scale(player.left,player.top,player.right,player.down)
      if musicPlaying:
         pickUpSound.play()

# draw the food
for food in foods:
   windowSurface.blit(foodImage,food)

Remove “eaten” cherries, of course bulking up!
All blits appear in the update
FPS == Frames Per Second
Variable that controls the mainClock.tick()
The monsters have a minimum and maximum size and their speed is controlled

if baddieAddCounter == ADDNEWBADDIERATE:
   baddieAddCounter = 0
   baddieSize = random.randint(BADDIEMINSIZE,BADDIEMAXSIZE)
   newBaddie = {'rect':pygame.Rect(random.randint(0,WINDOWWIDTH-baddieSize),0-baddieSize,baddieSize,baddieSize),'speed':random.randint(BADDIEMINSPEED,BADDIEMAXSPEED),'surface':pygame.transform.scale(baddieImage,(baddieSize,baddieSize))}

   baddies.append(newBaddie)

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