import pygame
import gamebox

width = 800
height = 600
camera = gamebox.Camera(width, height)
ship = gamebox.from_image(400, 560, "http://www.cs.virginia.edu/~up3f/cs1111/images/spaceship.jpg")

bullets = [
    gamebox.from_color(-300, 300, 'pink', 5, 20),
]

def tick(keys):
    '''
    This is where the game goes
    :param keys: recognizes what the user does with
    :return: doesn't return anything, it is actively running
    '''

    camera.clear("black")

    # make sure all bullet in a list keep moving
    for bullet in bullets:
       bullet.move_speed()

    if pygame.K_RIGHT in keys:
        ship.x += 5
    if pygame.K_LEFT in keys:
        ship.x -= 5
    if pygame.K_UP in keys:
        ship.y -= 5
    if pygame.K_DOWN in keys:
        ship.y += 5

    # if a spacebar is pressed, add one more bullet to the list
    if pygame.K_SPACE in keys:
        bullets.append(
            gamebox.from_color(-300, 300, 'pink', 5, 20),
        )

        # set the last button to move up (negative speedy)
        bullets[-1].speedy = -10
        # set position of the bullet
        bullets[-1].center = ship.center

        # remove the spacebar press from keys
        # (each spacebar press results in one shooting)
        keys.remove(pygame.K_SPACE)

    # wrap
    if ship.x > width:
        ship.x = 0
    if ship.x < 0:
        ship.x = width
    if ship.y > height:
        ship.y = 0
    if ship.y < 0:
        ship.y = height

    for bullet in bullets:
        camera.draw(bullet)

    camera.draw(ship)
    camera.display()    # make that screen appear


ticks_per_second = 60
gamebox.timer_loop(ticks_per_second, tick)