I wrote a game with Pygame on my Raspberry Pi. Then, the calculations that it had to do every frame dropped the frame rate significantly (5 fps instead of the intended 60 fps). I have a stronger computer that I want to try running it on, but there isn't a version of pygame that includes pygame.math that I can install on the operating system (Mac OS X 10.7.1). All I need is pygame.math.Vector2, so is there anywhere that I could find the source code for it?
Below is a class that I wrote. I attempted to make it behave exactly like pygame.math.Vector2.
import math
class Vec():
def __init__(self, x, y=None):
if y == None:
x, y = x[0], x[1]
self.x = float(x)
self.y = float(y)
def __iter__(self):
vals = [self.x, self.y]
return iter(vals)
def __add__(self, other):
x = self.x + other.x
y = self.y + other.y
return Vec(x, y)
def __sub__(self, other):
x = self.x - other.x
y = self.y - other.y
return Vec(x, y)
def __mul__(self, other):
if type(other) == type(self):
x = self.x * other.x
y = self.y * other.y
return x + y
else:
x = self.x * other
y = self.y * other
return Vec(x, y)
def rotate(self, angle):
ox, oy = 0, 0
px, py = self.x, self.y
qx = ox + math.cos(angle) * (px - ox) - math.sin(angle) * (py - oy)
qy = oy + math.sin(angle) * (px - ox) + math.cos(angle) * (py - oy)
return Vec(qx, qy)
def angle_to(self, other):
return math.degrees(math.asin((self.x * other.y - self.y * other.x)/(self.length()*other.length())))
def length(self):
return math.sqrt(self.x**2 + self.y**2)
However, it did not work and raised errors when the vector was used in mathematical operations and when a rectangle point was assigned to equal the vector.
