pymunx : a simplification class for pymunk

[crazy-chris]

Hey all,

I'm getting more and more familiar with pymunk (thanks Victor!) and enjoy the chipmunk physics a lot! I'm doing a few demos to get some experience, and started to write a simplification class for pymunk, to make it's easier to implement pymunk in pygame for example. As a working name I picked pymunx.

It's a good demo for me and maybe for others too, so I decided to write a very little documentation and post it here. It's very simple at the moment, but I'll add functions very quickly The idea would be, to provide developers easy to use, basic commands like add_wall, add_ball, add_square, ... so they do not have to worry about anything more

I'll post my updates at http://www.linuxuser.at/pymunx. Have a look at the very slim pymunx_demo1.py, or pymunx.py.

The typical usage in pygame looks like this:

Code: Select all

	import pygame
	from pygame.locals import *
	from pygame.color import *	

	from pymunx import *
	
	pygame.init()
	screen = pygame.display.set_mode((800, 800))
	clock = pygame.time.Clock()

	world = pymunx()
	world.add_wall((100, 200), (300, 200))
   	
	# Main Game Loop:
	while running:
		# Event Handling
		# Maybe calling world.add_ball(event.pos) or world.add_square(event.pos)
		# ...

		screen.fill((255,255,255))

		# Update & Draw World
		world.update()
		world.draw(screen)

		# Flip Display
		pygame.display.flip()
		
		# Try to stay at 50 FPS
		clock.tick(50)   		

Here's the overview of the class pymunx:

Code: Select all

class pymunx:
	def __init__ (self)
	def flipy (self, y)
	def autoset_screen_size (self)  # Gets screensize from pygame. Call this by hand only on resize

	def update (self, fps=50.0)	  # Updated thy physics
	def draw (self, surface)	     # Iterates through all elements and calls draw_shape with each
	def draw_shape (self, surface, shape)	# Draws a given shape (circle, segment, poly) on the surface

	def add_wall (self, p1, p2)	  # Adds a fixed wall between points p1 and p2
	def add_ball (self, pos, radius=15, mass=10.0, inertia=1000, friction=0.5)	# Adds a ball at pos. Other parameters are optional
	def add_square (self, pos, a=18, mass=5.0, friction=0.2)	# Adds a square at pos.