Pygame is a set of Python modules for developing video games. It provides tools for creating surfaces, handling events, playing sounds, and more. The presentation introduces essential Pygame elements like surfaces, rectangles, display, and events. Surfaces represent images and allow manipulating pixels. Rectangles are used for collision detection. The display module handles the screen. Events represent user inputs. Pygame provides a simple and portable way to create games in Python.

1. Pygame - Game
Development
Matheus Melo
XIX PUG-PE

2. Schedule
 Introduction
 What is PyGame?
 PyGame essential Elements
 Developing games with Pygame

3. What is Pygame?
 Set of Python modules for writing games
 Compatible with SDL
 Free 

4. Best Features
 No need to OpenGL setup
 Multi-core
 C/Assembler Core Functions
 Portable
 Easy to use
 Comunity

5. Problems
 Python is slow 
 But you can do something to turn this out.
 You write too much
 Isn’t a Game Engine, it’s a library.

6. Essential Elements
 Surface
 What is surface?
 2D and 3D planes.
 Eg:
 tamanho = ( 640 , 480 )
 cor = ( 255 , 0 , 0 ) # v e rme lho
 superficie = Surface ( tamanho )
 superficie . set_at ( ( 10 , 20 ) , cor )
 superficie . fill ( cor , ( 11 , 21 , 50 , 50 ) )
 tela = pygame . display . set_mode ( tamanho )

7. Surface – Important Functions
 fill( color, area)
 Fill a area with the selected color
 get_at( position )
 Returns the color that was in the setted
position
 set_at( position, color)
 Set the color on that position

8. Surface – Color Depth
 256 Colors
 24 bpp RGB
 3 Bytes per color

9. Surface - Transparency
 ColorKey
 One color is chosen to be transparent
 Image Alpha
 Can have his Translucency between 0 and
255
 Can be used together with ColorKey
 Per-Pixel Alpha
 Has a associated Alpha component.
 Cannot be used with another transparency

10. What is Blit ?
 Convert the current Surface Color Depth
to the next Surface Color Depth
 It is a very costly function
 What is the alternative?

11. Rect
 What is it?
 Eg:
 r = Rect ( ( 10 , 10 , 50 , 100 ) )
 print r.top , r. bottom # 1 0 1 1 0
 print r.left , r. right # 1 0 6 0
 print r.midtop , r. midleft # ( 3 5 , 1 0 ) ( 1 0 , 6 0 )
 print r. center # ( 3 5 , 6 0 )
 c1 = r. collidepoint ( 30 , 40 )
 c2 = r. colliderect ( ( 0 , 0 , 100 , 200 ) )
 r2 = r. inflate ( 10 , 10 )
 r2. move_ip ( 5 , 5 )

12. Rect – Important Functions
 clamp (area)
 Returns a new rectangle inside this area
 clip(area)
 Returns a new rectangle with his area cliped to
fill the new area
 collidepoint(x, y)
 Check if the point is in the rectangle.
 colliderect(area)
 Check if the area toch the current rectangle

13. Rect – Important Functions
 contains(area)
 Check if the area is in the rectangle.
 inflate(x,y)
 Returns a new rectangle with the dimensions of
the current rectangle increased according to
the passed value
 move(x,y)
 Returns a new rectangle with the positions of
current rectangle driven by passed values ​

14. Display
 What is it?
 Eg:
 modos = pygame . display . list_modes ()
 tela = pygame . display . set_mode ( modos [ 0 ] )
 rect = pygame . Rect ( 0 , 0 , 10 , 10 )
 pygame . display . set_caption ( " Teste do PyGame " )
 while tela . get_rect (). contains ( rect ):
 tela . fill ( ( 0 , 0 , 0 ) )
 tela . fill ( ( 255 , 0 , 0 ) , rect )
 rect . move_ip ( 10 , 10 )
 pygame . display . flip ()

15. Display – Essential Functions
 flip()
 Update all the screen content
 get_surface()
 Return the current surface
 list_modes()
 List possible resolutions/dimensions
 set_caption(title)
 Change screen title

16. Display – Essential Functions
 set_mode(size)
 Setup the screen with the passed size
 toggle_fullscreen()
 Toggle to fullscreen
 update(rect_list)
 Update certain areas of the screen
depending of the passed list of rectangles

17. Event
 What is it?
 Thereare two methods to handle the line
of events
 Event Queued
 Direct consultation of devices

18. Event Queued
 from pygame . locals import *
 for event in pygame . event .get ():
 if event . type == QUIT :
 sys . exit ()
 elif event . type == KEYDOWN :
 print event .key

19. Direct Consultation of Devices
 from pygame . locals import *
 while not ( pygame . mouse . get_pressed ()[ 0 ]
or pygame .key . get_pressed ()[ K_SPACE ] ):
 pygame . event . pump ()

20. References
 Python: http://www.python.org/
 PyGame: http://www.pygame.org/
 A Newbie Guide to pygame:
 http://www.pygame.org/docs/tut/newbieguide.html
 Introdução ao Pygame:
 http://www.pygame.org/docs/tut/intro/intro.html
 Dicas de Performance para Python: http:
 //www.python.org/moin/PythonSpeed/Performance
Tips
 Introdução ao Módulo Sprite do PyGame:
 http://www.pygame.org/docs/tut/SpriteIntro.html

21. Contact Details
 Matheus Melo
 Work mail:
 matheus.melo@idealizza.com.br
 Personal mail:
 matheuscmpm@gmail.com
 Twitter:
 @matheuscmpm
 Facebook
 /matheuscmpm