Comp 151 Project 8

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

• Use your original three functions
• Then from main function
• call a forth function for an event loop. The event loop function should 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)
• use a keyboard command (maybe arrow keys) to allow the player to control the hero ship and move it side to side.
• if the space key is pressed down, fire a shot from the hero ship up toward the enemies
• if the shot hits the enemy then both the shot and the enemy should disappear.
• Extra credit available
• In order to get extra credit, you must have completed all the work above you can do either, both or neither :
• For an extra 15 points: keep score. Every time an enemy hits and disappears, add 5 points to the score. Display the score.
• For an extra 20 points, add sounds. You'll need to look into playing sounds. If you want to use windows sounds playing that is fine, but give me a way to turn it off.

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), 'ship2.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), 'Bug1.gif')
        bgList.append(bg)
        bg.draw(window)
    return bgList



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

    win.getMouse() #wait to quit


main()