import pygame
from pygame.locals import *

pygame.init()

clock = pygame.time.Clock()
fps = 60

screen_width = 1000
screen_height = 1000

screen = pygame.display.set_mode((screen_width, screen_height))
pygame.display.set_caption('Platformer')

#define game variables
tile_size = 50
game_over = 0
main_menu = True

# store invisible barrier tiles
invisible_barriers = []

#load images
sun_img = pygame.image.load('sun.png')
bg_img = pygame.image.load('sky.png')
restart_img = pygame.image.load('restart_btn.png')
start_img = pygame.image.load('start_btn.png')
exit_img = pygame.image.load('exit_btn.png')

class Button():
	def __init__(self, x, y, image):
		self.image = image
		self.rect = self.image.get_rect()
		self.rect.x = x
		self.rect.y = y
		self.clicked = False

	def draw(self):
		action = False
		pos = pygame.mouse.get_pos()
		if self.rect.collidepoint(pos):
			if pygame.mouse.get_pressed()[0] == 1 and not self.clicked:
				action = True
				self.clicked = True
		if pygame.mouse.get_pressed()[0] == 0:
			self.clicked = False
		screen.blit(self.image, self.rect)
		return action

class Player():
	def __init__(self, x, y):
		self.reset(x, y)

	def update(self, game_over):
		dx = 0
		dy = 0
		walk_cooldown = 5

		if game_over == 0:
			key = pygame.key.get_pressed()
			if key[pygame.K_SPACE] and not self.jumped and not self.in_air:
				self.vel_y = -15
				self.jumped = True
			if not key[pygame.K_SPACE]:
				self.jumped = False
			if key[pygame.K_LEFT]:
				dx -= 5
				self.counter += 1
				self.direction = -1
			if key[pygame.K_RIGHT]:
				dx += 5
				self.counter += 1
				self.direction = 1
			if not key[pygame.K_LEFT] and not key[pygame.K_RIGHT]:
				self.counter = 0
				self.index = 0
				if self.direction == 1:
					self.image = self.images_right[self.index]
				if self.direction == -1:
					self.image = self.images_left[self.index]

			if self.counter > walk_cooldown:
				self.counter = 0
				self.index += 1
				if self.index >= len(self.images_right):
					self.index = 0
				if self.direction == 1:
					self.image = self.images_right[self.index]
				if self.direction == -1:
					self.image = self.images_left[self.index]

			self.vel_y += 1
			if self.vel_y > 10:
				self.vel_y = 10
			dy += self.vel_y

			self.in_air = True
			for tile in world.tile_list:
				if tile[1].colliderect(self.rect.x + dx, self.rect.y, self.width, self.height):
					dx = 0
				if tile[1].colliderect(self.rect.x, self.rect.y + dy, self.width, self.height):
					if self.vel_y < 0:
						dy = tile[1].bottom - self.rect.top
						self.vel_y = 0
					elif self.vel_y >= 0:
						dy = tile[1].top - self.rect.bottom
						self.vel_y = 0
						self.in_air = False

			# invisible barrier collisions
			for barrier in invisible_barriers:
				if barrier.colliderect(self.rect.x + dx, self.rect.y, self.width, self.height):
					dx = 0
				if barrier.colliderect(self.rect.x, self.rect.y + dy, self.width, self.height):
					if self.vel_y < 0:
						dy = barrier.bottom - self.rect.top
						self.vel_y = 0
					elif self.vel_y >= 0:
						dy = barrier.top - self.rect.bottom
						self.vel_y = 0
						self.in_air = False

			if pygame.sprite.spritecollide(self, blob_group, False):
				game_over = -1
			if pygame.sprite.spritecollide(self, lava_group, False):
				game_over = -1

			self.rect.x += dx
			self.rect.y += dy

		elif game_over == -1:
			self.image = self.dead_image
			if self.rect.y > 200:
				self.rect.y -= 5

		screen.blit(self.image, self.rect)
		pygame.draw.rect(screen, (255, 255, 255), self.rect, 2)

		return game_over

	def reset(self, x, y):
		self.images_right = []
		self.images_left = []
		self.index = 0
		self.counter = 0
		for num in range(1, 5):
			img_right = pygame.image.load(f'guy{num}.png')
			img_right = pygame.transform.scale(img_right, (40, 80))
			img_left = pygame.transform.flip(img_right, True, False)
			self.images_right.append(img_right)
			self.images_left.append(img_left)
		self.dead_image = pygame.image.load('ghost.png')
		self.image = self.images_right[self.index]
		self.rect = self.image.get_rect()
		self.rect.x = x
		self.rect.y = y
		self.width = self.image.get_width()
		self.height = self.image.get_height()
		self.vel_y = 0
		self.jumped = False
		self.direction = 0
		self.in_air = True

class World():
	def __init__(self, data):
		self.tile_list = []
		grass_img = pygame.image.load('grass.png')

		row_count = 0
		for row in data:
			col_count = 0
			for tile in row:
				x = col_count * tile_size
				y = row_count * tile_size
				if tile == 1:
					invisible_rect = pygame.Rect(x, y, tile_size, tile_size)
					invisible_barriers.append(invisible_rect)
				if tile == 2:
					img = pygame.transform.scale(grass_img, (tile_size, tile_size))
					img_rect = img.get_rect()
					img_rect.x = x
					img_rect.y = y
					tile = (img, img_rect)
					self.tile_list.append(tile)
				if tile == 3:
					blob = Enemy(x, y + 15)
					blob_group.add(blob)
				if tile == 6:
					lava = Lava(x, y + (tile_size // 2))
					lava_group.add(lava)
				col_count += 1
			row_count += 1

	def draw(self):
		for tile in self.tile_list:
			screen.blit(tile[0], tile[1])
			pygame.draw.rect(screen, (255, 255, 255), tile[1], 2)

class Enemy(pygame.sprite.Sprite):
	def __init__(self, x, y):
		pygame.sprite.Sprite.__init__(self)
		self.image = pygame.image.load('blob.png')
		self.rect = self.image.get_rect()
		self.rect.x = x
		self.rect.y = y
		self.move_direction = 1
		self.move_counter = 0

	def update(self):
		self.rect.x += self.move_direction
		self.move_counter += 1
		if abs(self.move_counter) > 50:
			self.move_direction *= -1
			self.move_counter *= -1

class Lava(pygame.sprite.Sprite):
	def __init__(self, x, y):
		pygame.sprite.Sprite.__init__(self)
		img = pygame.image.load('lava.png')
		self.image = pygame.transform.scale(img, (tile_size, tile_size // 2))
		self.rect = self.image.get_rect()
		self.rect.x = x
		self.rect.y = y

world_data = [
[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], 
[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1], 
[1, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 1], 
[1, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 2, 2, 1], 
[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 0, 7, 0, 5, 0, 0, 0, 1], 
[1, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 2, 2, 0, 0, 0, 0, 0, 1], 
[1, 7, 0, 0, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1], 
[1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1], 
[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 7, 0, 0, 0, 0, 1], 
[1, 0, 2, 0, 0, 7, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1], 
[1, 0, 0, 2, 0, 0, 4, 0, 0, 0, 0, 3, 0, 0, 3, 0, 0, 0, 0, 1], 
[1, 0, 0, 0, 0, 0, 2, 0, 0, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 1], 
[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1], 
[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 0, 7, 0, 0, 0, 0, 2, 0, 1], 
[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1], 
[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0, 2, 2, 2, 2, 2, 1], 
[1, 0, 0, 0, 0, 0, 2, 2, 2, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1], 
[1, 0, 0, 0, 0, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], 
[1, 0, 0, 0, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], 
[1, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
]

player = Player(100, screen_height - 130)
blob_group = pygame.sprite.Group()
lava_group = pygame.sprite.Group()

world = World(world_data)

restart_button = Button(screen_width // 2 - 50, screen_height // 2 + 100, restart_img)
start_button = Button(screen_width // 2 - 350, screen_height // 2, start_img)
exit_button = Button(screen_width // 2 + 150, screen_height // 2, exit_img)

run = True
while run:
	clock.tick(fps)
	screen.blit(bg_img, (0, 0))
	screen.blit(sun_img, (100, 100))

	if main_menu:
		if exit_button.draw():
			run = False
		if start_button.draw():
			main_menu = False
	else:
		world.draw()
		if game_over == 0:
			blob_group.update()
		blob_group.draw(screen)
		lava_group.draw(screen)
		game_over = player.update(game_over)
		if game_over == -1:
			if restart_button.draw():
				player.reset(100, screen_height - 130)
				game_over = 0

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

	pygame.display.update()

pygame.quit()