bullet.py

import random
import copy
import math
class Bullet(object):
    # Model
    def __init__(self, cx, cy, angle, speed, power):
        # A bullet has a position, a size, a direction, and a speed
        self.cx = cx
        self.cy = cy
        self.r = power
        self.angle = angle
        self.speed = speed
        
    # View
    def draw(self, canvas):
        canvas.create_oval(self.cx - self.r, self.cy - self.r, 
                           self.cx + self.r, self.cy + self.r,
                           fill="red", outline=None)

    # Controller
    def moveBullet(self):
        # Move according to the original trajectory
        self.cx += math.cos(math.radians(self.angle))*self.speed
        self.cy -= math.sin(math.radians(self.angle))*self.speed 
        
    def isOffscreen(self, width, height):
        # Check if the bullet has moved fully offscreen
        return (self.cx + self.r <= 0 or self.cx - self.r >= width) and \
               (self.cy + self.r <= 0 or self.cy - self.r >= height)
    
       
    
class BulletSpawner(object):
   
    
    def __init__(self,x,y):
        self.x = x
        self.y = y
        
    def makeBullet(self, screenWidth, screenHeight,level):
       
        side = random.choice(["topbot","leftright"])
        if side == "topbot":
            x = random.randint(0,screenWidth)
            y = random.choice([0,screenHeight])
        elif side == "leftright":
            x = random.choice([0,screenWidth])
            y = random.randint(0,screenHeight)
        
        choices = []
        num = 5
        for i in range(level+1):
            choices.append(num)
            num += 5
            
        if choices[-1] > 50:
            powerC = []
            for i in choices:
                if i <= 50:
                    powerC.append(i)
                if i > 50:
                    choices.append(i+5)
        
        power = random.choice(choices)
        speed = random.choice(choices)
        
        if x == 300:
            x += .001
        if y == 300:
            y += .001
            
        angle = math.degrees(math.atan((y *1. - screenHeight/2)/(screenWidth/2 - x)))
    
        if x > 300:
            angle = math.degrees(math.atan((x * 1. - screenWidth/2)/(y - screenHeight/2))) - 90
            if y > 300:
                angle += 180
        
        
        return Bullet(x, y, angle, speed, power)