Pymunx/Documentation

pymunx

Physics API for easy usage of chipmunk physics engine in pygame (with pymunk)

pymunx.__init__	Init function: pymunk, get flags, get screen size, init space
pymunx.set_info	Set the Info-Text for the upper left corner
pymunx.flipy	Convert Chipmunk y-coordinate to pyGame
pymunx.vec2df	Convert a pygame pos to a vec2d with flipped y coordinate
pymunx.autoset_screen_size	Get screensize from pygame
pymunx.get_pymunk_flags	Check pymunk version and adjusts settings
pymunx.update	Update the physics space
pymunx.draw	Call draw_shape for each element
pymunx.draw_shape	Draw a given shape (circle, segment, poly) on the surface
pymunx.add_wall	Add a fixed wall
pymunx.add_ball	Add a ball
pymunx.add_square	Add a square
pymunx.add_poly	Add a polygon

pymunx.__init__

def __init__(self, gravity=(0.0,-900.0))

• Init function - pymunk, get flags, get screen size, init space
• Parameters: gravity = (int(x), int(y))
• Returns: class pymunx

pymunx.set_info

pymunx.set_info(self, txt)

• Set the Info-Text which will be blit at the upper left corner each update
• Parameters: txt = str (break lines with \n)
• Returns: -

pymunx.flipy

pymunx.flipy (self, y)

1. Convert Chipmunk y-coordinate to pyGame (y = -y + self.display_height)
2. Parameters: y = int
3. Returns: int(y_new)

pymunx.vec2df

vec2df(self, pos)

• Convert a pygame pos to a vec2d with flipped y coordinate
• Parameters: pos = (int(x), int(y))
• Returns: class vec2d((pos[0], self.flipy(pos[1])))

pymunx.autoset_screen_size

autoset_screen_size (self)

• Get screensize from pygame. Call this only on resize
• Returns: -

pymunx.get_pymunk_flags

get_pymunk_flags (self)

• Check pymunk version, adjusts settings and returns new flagset
• Returns: class pymunk_flags

pymunx.update

update (self, fps=50.0, steps=5)

• Update thy physics. fps is optional and by default set to 50.0 - steps is substeps per update
• Returns: -

pymunx.draw

draw (self, surface)

• Iterate through all elements and call draw_shape with each
• Parameters: surface = pygame.Surface
• Returns: -

pymunx.draw_shape

draw_shape (self, surface, shape)

• Draw a given shape (circle, segment, poly) on the surface
• Parameters: surface = pygame.Surface | shape = pymunk.Shape
• Returns: -

pymunx.add_wall

add_wall (self, p1, p2, friction=10.0)

• Add a fixed wall between points p1 and p2. friction is a optional parameter
• Parameters: p = (int(x), int(y))
• Returns: -

pymunx.add_ball

add_ball (self, pos, radius=15, mass=10.0, inertia=1000, friction=0.5)

• Add a ball at pos. Other parameters are optional
• Parameters: pos = (int(x), int(y))
• Returns: -

pymunx.add_square

add_square (self, pos, a=18, mass=5.0, friction=0.2)

• Add a square at pos.
• Parameters: pos = (int(x), int(y))
• Returns: -

pymunx.add_poly

add_poly(self, points, mass=150.0, friction=10.0)

• Add a polygon from given a given pygame pointlist
• Parameters: points = [(int(x), int(y)), (int(x), int(y)), ...]
• Returns: -