import pygame
import time
import sys
import random

WIDTH, HEIGHT = 600, 700
WHITE = (255, 255, 255)
BLUE = (0,100,200)
PINK = (255, 0, 120)

MIN_ENEMY_SPEED = 4
MAX_ENEMY_SPEED = 6
PLAYER_SPEED = 3
MIN_BALL_WIDTH = 20
MAX_BALL_WIDTH = 30
ENEMY_COLOR = WHITE
PLAYER_COLOR = PINK
DIFFICULTY_LEVEL = 10
MAX_LIFE = 100

obstacles = []
canvas = pygame.display.set_mode((WIDTH,HEIGHT))
background  = pygame.Surface((WIDTH,HEIGHT))
pygame.display.set_caption('Budger')
clock = pygame.time.Clock()
pygame.init()

def drawBorder(y):
    pygame.draw.line(canvas, WHITE, (0, y), (WIDTH, y), 2)

def quitGame():
    pygame.quit()
    sys.exit(0)

def randomizeEnemy():
    x = random.randint(0, WIDTH - 50)
    y = random.randint(-700, -10)
    w = random.randint(MIN_BALL_WIDTH, MAX_BALL_WIDTH)
    enemySpeed = random.randint(MIN_ENEMY_SPEED, MAX_ENEMY_SPEED)
    return x, y, w, enemySpeed

def drawScore():
    global life
    global score

    font = pygame.font.SysFont("Calibri", 30)
    life_text = font.render("{} / {} ".format(life, MAX_LIFE), 1, WHITE)
    rect_life = life_text.get_rect()
    rect_life.x = 30
    rect_life.centery = HEIGHT - 30
    canvas.blit(life_text, (rect_life.x, rect_life.y))

    score_text = font.render("{}".format(score), 1, WHITE)
    rect_score = score_text.get_rect()
    rect_score.right = WIDTH - 30
    rect_score.centery = HEIGHT - 30
    canvas.blit(score_text, (rect_score.x, rect_score.y))

class Enemy():
    def __init__(self, x, y, w, enemySpeed):
        self.x = x
        self.y = y
        self.w = w
        self.speed = enemySpeed

    def create(self):
        self.rec = pygame.Rect(self.x, self.y, self.w, self.w)

    def update(self, player):
        global life
        self.create()
        self.y += self.speed

        if self.rec.bottom > HEIGHT - 60:
            self.x, self.y, self.w, self.speed = randomizeEnemy()
            self.create()

        if self.rec.colliderect(player.rec):
            life -=1
            print(life)

    def show(self):
        pygame.draw.rect(canvas, ENEMY_COLOR, self.rec, 0)

class Player():
    def __init__(self, x):
        self.rec = pygame.Rect(0, HEIGHT - 90, 30, 30)
        self.rec.centerx = x
        self.speed = PLAYER_SPEED
        self.direction = 0

    def update(self):
        self.rec.x += self.speed * self.direction
        if self.rec.left <= 0:
            self.rec.left = 0
        elif self.rec.right >= WIDTH:
            self.rec.right = WIDTH

    def show(self):
        pygame.draw.rect(canvas, PLAYER_COLOR, self.rec, 0)

for i in range(DIFFICULTY_LEVEL):
    x, y, w, speed = randomizeEnemy()
    obstacles.append(Enemy(x, y, w, speed))

player = Player(WIDTH/2)

life = 100
score = 0
start = time.time()
while True:

    player.direction = 0
    keys = pygame.key.get_pressed()
    if keys[pygame.K_LEFT]:
        player.direction = -1
    elif keys[pygame.K_RIGHT]:
        player.direction = 1

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            quitGame()

    canvas.blit(background, (0,0))
    drawBorder(HEIGHT - 60)
    drawScore()

    for enemy in obstacles:
        enemy.update(player)
        enemy.show()
    player.update()
    player.show()
    pygame.display.flip()
    clock.tick(60)