1. Pygame Hello World

1.1. Bibliography

• Book Link

1.2. Pygame Hello World

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43

pygame.draw.polygon(windowSurface,GREEN,((146,0),(291,106),(236,277)))

 

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import pygame, sys

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from pygame.locals import *

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from pygame.color import *

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# set up pygame

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pygame.init()

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# set up the window

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windowSurface = pygame.display.set_mode((500,400))

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# set up the colors

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BLACK = Color(0,0,0)

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WHITE = Color(255,255,255)

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RED = Color(255,0,0)

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GREEN = Color(0,255,0)

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BLUE = Color(0,0,255)

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# set up fonts

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basicFont = pygame.font.SysFont('timesnewroman',30)

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# set up the text

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text = basicFont.render("Hello world!",False,BLACK,WHITE)

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textRect = text.get_rect()

Activity: 1.2.1 ActiveCode (ac_l60_1_en)

import pygame, sys
from pygame.locals import *

# set up pygame
pygame.init()

# set up the window
windowSurface = pygame.display.set_mode((500,400),0,32)
pygame.display.set_caption('Hello world!')

# set up the colors
BLACK = (0,0,0)
WHITE = (255,255,255)
RED = (255,0,0)
GREEN = (0,255,0)
BLUE = (0,0,255)

# set up fonts
basicFont = pygame.font.SysFont(None,48)

# set up the text
text = basicFont.render('Hello world!',True,WHITE,BLUE)
textRect = text.get_rect()
textRect.centerx = windowSurface.get_rect().centerx
textRect.centery = windowSurface.get_rect().centery

# draw the white background onto the surface
windowSurface.fill(WHITE)

# draw a green polygon onto the surface
pygame.draw.polygon(windowSurface,GREEN,((146,0),(291,106),(236,277)))

# draw some blue lines onto the surface
pygame.draw.line(windowSurface,BLUE,(60,60),(120,60),4)
pygame.draw.line(windowSurface,BLUE,(120,60),(60,120))
pygame.draw.line(windowSurface,BLUE,(60,120),(120,120),4)

# draw a blue circle onto the surface
pygame.draw.circle(windowSurface,BLUE,(300,50),20,0)

# get a pixel array of the surface
pixArray = pygame.PixelArray(windowSurface)
pixArray[480][380] = BLACK
del pixArray

# draw the text onto the surface
windowSurface.blit(text, textRect)

# draw the window onto the screen
pygame.display.update()

# run the game loop
while True:
   for event in pygame.event.get():
      if event.type == QUIT:
         pygame.quit()
         sys.exit()

• If I don’t delete pixArray, it will remain in a blocked state

• I delete pixArray to be able to handle the Surface object through the blit() method

• The blit() only modifies the memory, but to update the screen I must call display.update()

• Don’t forget to call pygame.quit()

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