Comp 151 Project 8

Take your solution to project 5 and lets add a few things to it.

• Use your original main function and create_bad_guy and create_good_guy functions.
• Rename your move function  event_loop. The event_loop function should now take three parameters: The window, the list of bad guys, and the good guy.
• The event loop should do the following
• move the bad guys back and forth in the window (make sure they don't leave the window) which you already did.
• use a keyboard command (maybe arrow keys, or maybe 'a' and 'd') to allow the player to control the hero and move it side to side.
• if the space key is pressed down, fire a shot from the hero up toward the enemies
• if the shot hits the enemy then both the shot and the enemy should disappear.
• keep score. Every time an enemy hits and disappears, add 5 points to the score. Display the score.
• about every 3 seconds, (program it to happen every 4 seconds based on your time.sleep calls) have one randomly chosen enemy fire down toward the player's area. 
• if the enemy shot collides with the player, then tell the player they have lost.
• 
  
• Extra credit available
• In order to get extra credit, you must have completed all the work above you can  :
• For an extra 20 points, add sounds.  I recommend the pyglet library, It works great cross platform, but requires the command line to install it properly. (Pycharm will try to install it for you, but will fail.) use

  pip3 install pyglet

• you need a sound for
• the hero firing.
• the hero shot hitting an enemy
• the player losing

It took me about 2 1/2 hours to put my solution to this project together. You have just over 3 weeks to do this project. I expect this will take most of you somewhere between 10 and 16 hours to complete. Please start early. You will have to work on this some time and then put this one away for a while and come back to it. You will not be able to put in an allnighter and finish this one.

In order to check for a collision between the shot and the enemy ships you will need to check to see if the rectangle for the shot overlaps the rectangle for the enemy ship. I suggest looking at this site here. In particular I suggest that you pilfer this slight modification of their function :

def overlap(r1,r2):
    '''Overlapping rectangles overlap both horizontally & vertically
	edited from the original to work with the rect class below '''
    hoverlaps = True
    voverlaps = True
    if (r1.left() > r2.right()) or (r1.right() < r2.left()):
        hoverlaps = False
    if (r1.top() > r2.bottom()) or (r1.bottom() < r2.top()):
        voverlaps = False
    return hoverlaps and voverlaps

To use the function above, you will need this code for your class too. Just copy this into your file
class rect:
    def __init__ (self, pict):
        '''
        pict should be a zelle graphics.image file
        '''
        self.pict = pict
        pass

    def right(self):
        return self.pict.getAnchor().getX() + self.pict.getWidth()/2
    def left(self):
        return self.pict.getAnchor().getX() - self.pict.getWidth()/2
    def top(self):
        return self.pict.getAnchor().getY() - self.pict.getHeight()/2
    def bottom(self):
        return self.pict.getAnchor().getY() + self.pict.getHeight()/2




For those of you who had trouble with project 5, here is my code for project 5. It assumes that you have the images in the same folder as the code.


__author__ = 'jsantore'

import graphics
import time


WINDOW_WIDTH = 700
NUM_BAD_GUYS = 8

def loadGoodGuys(window):
hero = graphics.Image(graphics.Point(200, 450), 'horseman-n-attack4.gif')
hero.draw(window)
return hero

def loadBadGuys(window):
bgList = []
for i in range (NUM_BAD_GUYS):
bg = graphics.Image(graphics.Point(i*70+50, 70), 'ogre-attack1.gif')
bgList.append(bg)
bg.draw(window)
return bgList

def move_stuff(badGuys):
bgVel = 5
currNumBadGuys = NUM_BAD_GUYS
while True:
#first check if the bad guys are leaving the screen
if badGuys[0].getAnchor().getX()-(badGuys[0].getWidth()/2)<=0 or \
badGuys[currNumBadGuys-1].getAnchor().getX()+(badGuys[currNumBadGuys-1].getWidth()/2)>=WINDOW_WIDTH:
bgVel = -bgVel
for bg in badGuys:
bg.move(bgVel,0)
time.sleep(0.05)

def main():
win = graphics.GraphWin("Project 8 Start", WINDOW_WIDTH, 500)
hero = loadGoodGuys(win)
bgList = loadBadGuys(win)
move_stuff(bgList)



main()