cpong.py

Created by aquaebm

Created on October 09, 2022

1.56 KB

This script is heavily inspired by the android game circle pong, by manguildev (source) and was made as part of a challenge to code an entire game WITHOUT USING A SINGLE “if” statement (turns out boolean arithmetic is pretty fun actually!).

REQUIRES util.py to be downloaded onto your calculator.

Use the ALPHA and TOOLBOX keys to rotate the pad clockwise or counterclockwise (respectively) to protect the ball from touching the red zone.

I’ll add a score counter soon…

from math import *
from util import *
def cartesian(r,th):return[r*cos(th),r*sin(th)]
def line(x,y,u,v,t):
  yield from((x+u*i,y+v*i)for i in range(ceil(t)))
  x+=u*t;y+=v*t
  return x,y,atan2(y,x)
class Pad:
  def __init__(s,r,spd,phi):
    s.pos=[cartesian(r,-phi/2),cartesian(r,phi/2)]
    s.dx,s.dy=cartesian(1.,spd)
  def __call__(s,d):
    dx,dy=s.dx**(d&1),s.dy*d
    p=s.pos
    (sx,sy),(ex,ey)=s,e=p[d==1],p[d!=1] # MWAHAHAAA. Begone, if statements!
    s[0]=sx*dx-sy*dy
    s[1]=sy*dx+sx*dy
    e[0]=ex*dx-ey*dy
    e[1]=ey*dx+ex*dy
    return sx,sy,ex,ey
  def __contains__(s,w,offset=pi/45):
    (sx,sy),(ex,ey)=s.pos
    th,phi=wrap(atan2(sy,sx)-offset,-pi,pi),wrap(atan2(ey,ex),-pi,pi)
    # Values returned by arc trig functions are always in [-pi, pi]
    return(w>=th)+(w<=phi)+(phi<th)==2 # Ahh yeess..
def ball_pos(pad,t,spd):
  x=y=w=v=0;u=spd;t/=spd
  while w in pad:
    x,y,w=yield from line(x,y,u,v,t)
    u,v=cartesian(-spd,w+uniform(-pi/5,pi/5))
    t=-2*(u*x+v*y)/(u*u+v*v)
@game_func
def run(col,bg,spd):
  fill_screen(bg)
  f,d,t,k=fill_rect,disc,int,keydown
  dzc=(255,0,0)
  bx,by=160,111
  pad=Pad(106,pi/120,pi/3)
  def rotate_pad(d):
    sx,sy,ex,ey=pad(d)
    f(157+t(sx),108-t(sy),7,7,col)
    f(157+t(ex),108-t(ey),7,7,dzc)
  for _ in range(240):rotate_pad(1)
  for i in range(3,0,-1):
    draw_string(str(i),155,102,col,bg)
    sleep(.5)
  for x,y in ball_pos(pad,94,spd):
    d(bx,by,8,bg)
    bx,by=160+t(x),111-t(y)
    d(bx,by,8,col)
    rotate_pad(k(13)-k(16)) # Wait, there's more?
ARGS={"col":CYAN,"bg":DARK_PURPLE,"spd":.75}
run(**ARGS)