import pygame 
from pygame.locals import *
from pygame import mixer
import pickle 
from os import path


pygame.mixer.pre_init(44100, -16, 2, 512)
mixer.init()
pygame.init()

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


screen_width = 1000 #Screen Width
screen_height = 1000 #Screen height

screen = pygame.display.set_mode((screen_width, screen_height)) #Sets python display
pygame.display.set_caption('Cool Platformer Game                                                                                                 -Tyson Allerby-') #Sets the window name

#define font
font = pygame.font.SysFont('Arial', 70)
font_score = pygame.font.SysFont('Arial', 30)


#Define game Varibles 
tile_size = 50 
game_over = 0
main_menu = True
level = 1
max_levels = 7
score = 0

#define colours
white = (255, 255, 255)
black = (0, 0, 0)


#load images
sun_img = pygame.image.load('MiniProject2/light-removebg-preview.png')#<----------Put image url here
sun_img = pygame.transform.scale(sun_img,(100, 100))
bg_img = pygame.image.load('MiniProject2/bg.jpg')#<----------Put image url here
bg_img = pygame.transform.scale(bg_img, (1000, 1000))
restart_img = pygame.image.load('MiniProject2/restart_btn.png')
start_img = pygame.image.load('MiniProject2/start_btn.png') 
exit_img = pygame.image.load('MiniProject2/exit_btn.png') 

#load sounds
pygame.mixer.music.load('MiniProject2/Best Music Mix ♫ No Copyright Gaming Music ♫ Music by Roy Knox and Friends.wav')
pygame.mixer.music.play(-1, 0.0, 5000)
coin_fx = pygame.mixer.Sound('MiniProject2/coin.wav')
coin_fx.set_volume(0.5)
jump_fx = pygame.mixer.Sound('MiniProject2/jump.wav')
jump_fx.set_volume(0.5)
game_over_fx = pygame.mixer.Sound('MiniProject2/game_over.wav')
game_over_fx.set_volume(0.5)



def draw_text(text, font, text_col, x, y):
    img = font.render(text, True, text_col)
    screen.blit(img, (x, y))



#This is for the grid lines
def draw_grid():
    for line in range(0, 50): 
        pygame.draw.line(screen, (255, 255, 255), (0,line *tile_size), (screen_width, line * tile_size))
        pygame.draw.line(screen, (255, 255, 255), (line * tile_size, 0), (line * tile_size, screen_height))


#function to reset level
def reset_level(level):
    player.reset(100, screen_height - 130)
    blob_group.empty()
    lava_group.empty()
    exit_group.empty()
    platform_group.empty()

    #Load in level data and create world 
    if path.exists(f'MiniProject2/level{level}_data'):
        pickle_in =  open(f'MiniProject2/level{level}_data', 'rb')
        world_data = pickle.load(pickle_in)
    world = World(world_data)

    return world


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

        #Get mouse postion
        pos = pygame.mouse.get_pos()

        #Check mouseover and check conditions
        if self.rect.collidepoint(pos):
            if pygame.mouse.get_pressed()[0] == 1 and self.clicked == False:
                action = True
                self.clicked = True
                

        if pygame.mouse.get_pressed()[0] == 0:
            self.clicked = False 

        #draw Button
        screen.blit(self.image, self.rect)

        return action 

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


    #Moving left of right
    def update(self, game_over):
        dx = 0
        dy = 0  
        walk_cooldown = 5
        col_thresh = 20

        if game_over == 0:
            #Keypresses
            key = pygame.key.get_pressed()
            if key[pygame.K_SPACE] and self.jumped == False and self.in_air == False:
                jump_fx.play()
                self.vel_y = -15 # Change number for how fast the jump is
                self.jumped = True
            if key[pygame.K_SPACE] == False: 
                self.jumped = False 
            if key[pygame.K_LEFT]:
                dx -= 5 # Change the number = change speed to left
                self.counter += 1
                self.direction = -1
            if key[pygame.K_RIGHT]:
                dx += 5 # Change the number = change speed to right
                self.counter += 1
                self.direction = 1
            if key[pygame.K_LEFT] == False and key[pygame.K_RIGHT] == False:
                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]

            #Animation 
            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]


            #Add Gravity
            self.vel_y += 1
            if self.vel_y > 10 : #Change these values to change how slow you fall
                self.vel_y = 10 #Change these values to change how slow you fall
            dy += self.vel_y 

            #check for colision
            self.in_air = True 
            for tile in world.tile_list:
                #check collosion in x direction
                if tile[1].colliderect(self.rect.x + dx, self.rect.y, self.width, self.height):
                    dx = 0
                #check for colision in y direction
                if tile[1].colliderect(self.rect.x, self.rect.y + dy, self.width, self.height):
                    #check if below the ground i.e. jumping
                    if self.vel_y < 0:
                        dy = tile[1].bottom - self.rect.top
                        self.vel_y = 0
                    #check if above the ground i.e. falling
                    elif self.vel_y >= 0:
                        dy = tile[1].top - self.rect.bottom
                        self.vel_y = 0
                        self.in_air = False


            #check for colision in enemeys
            if pygame.sprite.spritecollide(self, blob_group, False):
                game_over = -1
                game_over_fx.play()

            #check for colision in lava
            if pygame.sprite.spritecollide(self, lava_group, False):
                game_over = -1
                game_over_fx.play()

            #check for colision with exit
            if pygame.sprite.spritecollide(self, exit_group, False):
                game_over = 1


            #check for collisoion in moving platforms
            for platform in platform_group:
                #check in the x direction
                if platform.rect.colliderect(self.rect.x + dx, self.rect.y, self.width, self.height):
                    dx = 0
                #col in y direct
                if platform.rect.colliderect(self.rect.x, self.rect.y + dy, self.width, self.height):
                    #check if below platform
                    if abs((self.rect.top + dy) - platform.rect.bottom) < col_thresh:
                        self.vel_y = 0
                        dy = platform.rect.bottom - self.rect.top
                    #check if above platform
                    elif abs((self.rect.bottom + dy) -  platform.rect.top) < col_thresh:
                        self.rect.bottom = platform.rect.top - 1
                        self.in_air = False
                        dy = 0
                    #move sideways with platform
                    if platform.move_x != 0:
                        self.rect.x += platform.move_direction


            #update player coord
            self.rect.x += dx 
            self.rect.y += dy        

        elif game_over == -1:
            self.image = self.dead_image
            draw_text('GAME  OVER', font, black, (screen_width // 2) - 200, screen_height // 2)
            if self.rect.y > 200:
                self.rect.y -= 5

        #draw player on screen
        screen.blit(self.image, self.rect)
        
        return game_over
    
    #Resets all varibles 
    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'MiniProject2/guy{num}.png') #Shows Player animation
            img_right = pygame.transform.scale(img_right, (40, 80))  #Shows Player and scales
            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('MiniProject2/ghost.png')
        self.image = self.images_right[self.index]
        self.rect = self.image.get_rect()
        self.rect.x = x #Left
        self.rect.y = y #Right
        self.width = self.image.get_width()
        self.height = self.image.get_height()
        self.vel_y = 0 #Up
        self.jumped = False #One jump
        self.direction = 0
        self.in_air = True


class World(): #List the world data
    def __init__(self, data):
        self.tile_list = []

        #Load Images
        dirt_img = pygame.image.load('MiniProject2/dirt.jpg') #<----------Put image url here
        grass_img = pygame.image.load('MiniProject2/grass.png')



        #Put the images to where they need to be and scale the size
        row_count = 0
        for row in data:
            col_count = 0
            for tile in row :
                if tile == 1:
                    img = pygame.transform.scale(dirt_img, (tile_size, tile_size))
                    img_rect = img.get_rect()
                    img_rect.x = col_count * tile_size
                    img_rect.y = row_count * tile_size
                    tile = (img, img_rect)
                    self.tile_list.append(tile)
                if tile == 2:
                    img = pygame.transform.scale(grass_img, (tile_size, tile_size))
                    img_rect = img.get_rect()
                    img_rect.x = col_count * tile_size
                    img_rect.y = row_count * tile_size
                    tile = (img, img_rect)
                    self.tile_list.append(tile)
                if tile == 3:
                    blob = Enemy(col_count * tile_size, row_count * tile_size + 15)
                    blob_group.add(blob)
                if tile == 4:
                    platform = Platform(col_count * tile_size, row_count * tile_size, 1, 0, )
                    platform_group.add(platform)
                if tile == 5:
                    platform = Platform(col_count * tile_size, row_count * tile_size, 0, 1)
                    platform_group.add(platform)
                if tile == 6:
                    lava =Lava(col_count * tile_size, row_count * tile_size + (tile_size // 2))
                    lava_group.add(lava)
                if tile == 7:
                    coin =Coin(col_count * tile_size + (tile_size // 2), row_count * tile_size + (tile_size // 2))
                    coin_group.add(coin)
                if tile == 8:
                    exit = Exit(col_count * tile_size, row_count * tile_size - (tile_size // 2))
                    exit_group.add(exit)

                col_count += 1
            row_count += 1

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

#making the enemy
class Enemy(pygame.sprite.Sprite):
    def __init__(self, x, y ):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.image.load('MiniProject2/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 Platform(pygame.sprite.Sprite):
    def __init__(self, x, y, move_x, move_y ):
        pygame.sprite.Sprite.__init__(self)
        img = pygame.image.load('MiniProject2/platform.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
        self.move_counter = 0
        self.move_direction = 1
        self.move_x = move_x
        self.move_y = move_y

    def update(self):
        self.rect.x += self.move_direction * self.move_x
        self.rect.y += self.move_direction * self.move_y
        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('MiniProject2/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

class Coin(pygame.sprite.Sprite):
    def __init__(self, x, y ):
        pygame.sprite.Sprite.__init__(self)
        img = pygame.image.load('MiniProject2/coin.png')
        self.image = pygame.transform.scale(img, (tile_size // 2, tile_size // 2))
        self.rect = self.image.get_rect()
        self.rect.center = (x, y)



class Exit(pygame.sprite.Sprite):
    def __init__(self, x, y ):
        pygame.sprite.Sprite.__init__(self)
        img = pygame.image.load('MiniProject2/exit.png')
        self.image = pygame.transform.scale(img, (tile_size, int(tile_size * 1.5)))
        self.rect = self.image.get_rect()
        self.rect.x = x
        self.rect.y = y


player = Player(100, screen_height - 130)

blob_group = pygame.sprite.Group()
platform_group = pygame.sprite.Group()
lava_group = pygame.sprite.Group()
coin_group = pygame.sprite.Group()
exit_group = pygame.sprite.Group()

#create dummy coin for score
score_coin = Coin(tile_size // 2, tile_size // 2)
coin_group.add(score_coin)

#Load in level data and create world 
if path.exists(f'MiniProject2/level{level}_data'):
    pickle_in =  open(f'MiniProject2/level{level}_data', 'rb')
    world_data = pickle.load(pickle_in)
world = World(world_data)

#create buttons
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 #The game is running
while run: #As long as this varible is true keep running
    
    clock.tick(fps)

    screen.blit(bg_img , (0, 0))
    screen.blit(sun_img, (100, 100))

    if main_menu == True:
        if exit_button.draw():
            run = False
        if start_button.draw():
            main_menu = False
    else:
        world.draw()

        if game_over == 0:
            blob_group.update() 
            platform_group.update()
            #update score
            #check if a coin has been collected
            if pygame.sprite.spritecollide(player, coin_group, True):
                score += 1
                coin_fx.play()
            draw_text('X ' + str(score), font_score, white, tile_size - 10, 10)

        blob_group.draw(screen)
        platform_group.draw(screen)
        lava_group.draw(screen)
        coin_group.draw(screen)
        exit_group.draw(screen)
        
        game_over = player.update(game_over)

        #if player has died 
        if game_over == -1:
            if restart_button.draw():
                world_data = []
                world = reset_level(level)
                game_over = 0
                score = 0

        if game_over == 1:
            #reset game and go to next level
            level += 1 
            if level <= max_levels:
                #reset level
                world_data = []
                world = reset_level(level)
                game_over = 0
            else:
                draw_text('YOU WIN!!!!', font, black, (screen_width // 2) - 140, screen_height // 2)
                if restart_button.draw():
                    level = 1
                    #reset level
                    world_data = []
                    world = reset_level(level)
                    game_over = 0
                    score = 0

    

    #Stops the game
    for event in pygame.event.get():
        if event.type == pygame.QUIT: 
            run = False
            
    pygame.display.update()

pygame.quit()