import pygame, math, random, sys, time
pygame.mixer.init(44100, -16, 2, 1024)
pygame.init()
screen = pygame.display.set_mode([800, 600])
screen.fill([0, 0, 0])

sound_fire = pygame.mixer.Sound('laser.ogg')
#bang = pygame.mixer.Sound('explosion.ogg')
#song = pygame.mixer.music.load('whiteandnerdy.mp3')

ship = pygame.image.load('spaceship.png')
ship_frame = ship.get_rect()
alien = pygame.image.load('alien.png')
alien_frame = alien.get_rect()
bullet = pygame.image.load('bullet.png')
bullet_frame = bullet.get_rect()

#pygame.mixer.music.play()



ship_x, ship_y, ship_step = 400, 500, 2
place_score = (5, 5)
bullet_step = 1
badguy_delay = 500

bullet_y = ship_y-20
epoint = random.randint(200, 400)
badguy_x = epoint
badguy_y = 0


running = True

#moving the ship
delay = 1
interval = 1
pygame.key.set_repeat(delay, interval)
shot=False
monster = True

class Bullet(object):
    def __init__(self, left, top):
        self.image = pygame.image.load("bullet.png")
        self.rect = self.image.get_rect(topleft = (left, top))

    def move(self):
        self.rect.centery -= 1

    def draw_to_screen(self, surface):
        screen.blit(self.image, self.rect)

"""def bulletshot():
            global bullet_x, bullet_y, shot
            bullet_x = ship_x + 26
            pygame.draw.rect(screen, [0, 0, 0], [bullet_x, bullet_y, 30, 25], 0)
            bullet_y=bullet_y - 1
            screen.blit(bullet, (bullet_x, bullet_y))
            if bullet_y < -10:
                pygame.draw.rect(screen, [0, 0, 0], [bullet_x, bullet_y, 30, 25], 0)
                shot = False"""

def badguy():
        midpoint = random.randint(200, 400)
        alaius = random.randint(100, 300)
        global monster, badguy_x, badguy_y
        pygame.draw.rect(screen, [0, 0, 0], [badguy_x, badguy_y, 42, 42], 0)
        badguy_y+=0.1
        badguy_x=(alaius*(math.sin(0.1*badguy_y))+ midpoint)
        screen.blit(alien, (badguy_x, badguy_y))
        if badguy_y > 458:
            pygame.draw.rect(screen, [0, 0, 0], [badguy_x, badguy_y, 42, 42], 0)
            monster = False
            del badguy_x, badguy_y

#def gameover():

bullet = Bullet(ship_x + 26, ship_y - 20)

while running:
        pygame.draw.line(screen, [0, 0, 205], (0, 500), (800, 500), 1)
        screen.blit(ship, (ship_x, ship_y))
        for i in pygame.event.get():
                if i.type == pygame.QUIT:
                    running = False
                if i.type == pygame.KEYDOWN:
                    if i.key == pygame.K_LEFT:
                        ship_x = ship_x - ship_step
                    elif i.key == pygame.K_RIGHT:
                        ship_x = ship_x + ship_step
                    elif i.key == pygame.K_SPACE:
                        shot = True
                        sound_fire.play()
                if i.type == pygame.USEREVENT:
                    monster = True
                    pygame.time.set_time(pygame.USEREVENT, 0)
                if ship_x<-20:
                    ship_x=-20
                if ship_x>750:
                    ship_x=750
        if shot:
            bullet.move()
            bullet.draw_to_screen(screen)
        if monster:
            badguy()
        if not monster:
            pygame.time.set_timer(pygame.USEREVENT, 1000)
        pygame.display.flip()
        pygame.time.delay(1)



pygame.quit ()












#Kavas on teha veel skoorisüsteem
#vastased peaks tulema alla iga kord erineva y=arcsin(x) funktsiooni kaudu
#mida kõrgem skoor, seda kiiremini tulevad