Question

Using Python 3 graphics, create a bouncing ball within a box. Allow the user to control the ball using their keyboard.

Answer 1

from graphics import *
import time, random 

def bounceInBox(shape, dx, dy, xLow, xHigh,yLow,yHigh):
          delay = .005 
          for i in range(600): 
               shape.move(dx, dy) 
               center = shape.getCenter()
               x = center.getX() 
               y = center.getY() 
               if x < xLow: 
                  dx = -dx 
               elif x > xHigh: 
                  dx = -dx 
               if y < yLow: 
                  dy = -dy 
               elif y > yHigh: 
                  dy = -dy 
                  time.sleep(delay)
  
def getRandomPoint(xLow, xHigh, yLow, yHigh):
     x = random.randrange(xLow, xHigh+1) 
     y = random.randrange(yLow, yHigh+1) 
     return Point(x, y)

def makeDisk(center, radius, win):
    disk = Circle(center, radius)
    disk.setOutline("red")
    disk.setFill("red") 
    disk.draw(win) 
    return disk
def bounceBall(dx, dy):
    winWidth = 290 
    winHeight = 290 
    win = GraphWin('Ball Bounce', winWidth, winHeight) 
    win.setCoords(0,0,winWidth, winHeight) 
    radius = 10 
    xLow = radius  
    xHigh = winWidth - radius 
    yLow = radius 
    yHigh = winHeight - radius 
    center = getRandomPoint(xLow, xHigh, yLow, yHigh) 
    ball = makeDisk(center, radius, win)
    bounceInBox(ball, dx, dy, xLow, xHigh, yLow, yHigh) 
    win.close()
    
bounceBall(3,5)