#--------------------------------------------------------------------------
#  Name :       Future runner
#  Purpose :    DGT2 2025
#  Author:      Ahmet Ertekin
#  Created :    30/4/2025
#  Copyright :  ©Ahmet Ertekin
#--------------------------------------------------------------------------
import os
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 = 45

screen_width = 1000
screen_height = 1000

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

#define font
font = pygame.font.SysFont('Bauhaus 93', 70)
font_score = pygame.font.SysFont('Bauhaus 93', 30)

#define game variables
tile_size = 50
game_over = 0
main_menu = True
level = 1
max_levels = 7
score = 0
coins_collected = 0  # New variable to track coins collected in the current level

# Define fonts
font = pygame.font.SysFont('Bauhaus 93', 30)

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

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

# Load "You Won" image
won_img = pygame.image.load('img/you_won.jpg')
won_img = pygame.transform.scale(won_img, (400, 200))  # Adjust size as needed

# Load "getcoins" image for insufficient coins message
not_enough_coins_img = pygame.image.load('img/getcoins.png')
not_enough_coins_img = pygame.transform.scale(not_enough_coins_img, (400, 200))  # Adjust size as needed
not_enough_coins_img.set_alpha(255)  # start fully opaque

#load sounds
pygame.mixer.music.load('img/music.wav')
pygame.mixer.music.play(-1, 0.0, 5000)
coin_fx = pygame.mixer.Sound('img/coin.wav')
coin_fx.set_volume(0.5)
jump_fx = pygame.mixer.Sound('img/jump.wav')
jump_fx.set_volume(0.5)
game_over_fx = pygame.mixer.Sound('img/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))

#function to reset level
def reset_level(level):
    player.reset(100, screen_height - 130)
    cyborg_group.empty()
    platform_group.empty()
    coin_group.empty()
    spike_group.empty()
    exit_group.empty()
   
    global coins_collected
    coins_collected = 0  # Reset coins collected for the new level

    #load in level data and create world
    if path.exists(f'level{level}_data'):
        pickle_in = open(f'level{level}_data', 'rb')
        world_data = pickle.load(pickle_in)
    world = World(world_data)
    #create dummy coin for showing the score
    score_coin = Coin(tile_size // 4, tile_size // 4)
    coin_group.add(score_coin)
    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 position
        pos = pygame.mouse.get_pos()

        #check mouseover and clicked 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

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

    def update(self, game_over):
        dx = 0
        dy = 0
        walk_cooldown = 5
        col_thresh = 20

        if game_over == 0:
            key = pygame.key.get_pressed()

            # Check for spacebar (jumping)
            if key[pygame.K_SPACE] and not self.jumped and not self.in_air:
                jump_fx.play()
                self.vel_y = -15
                self.jumped = True

            if not key[pygame.K_SPACE]:
                self.jumped = False

            # Check for arrow keys (movement)
            if key[pygame.K_LEFT] or key[pygame.K_a]:
                dx -= 7
                self.counter += 1
                self.direction = -1
            elif key[pygame.K_RIGHT] or key[pygame.K_d]:
                dx += 7
                self.counter += 1
                self.direction = 1
            else:
                self.counter = 0
                self.index = 0
                if self.direction == 1:
                    self.image = self.images_right[self.index]
                elif self.direction == -1:
                    self.image = self.images_left[self.index]

            # Check for W key (alternative jump control)
            if key[pygame.K_w] and not self.jumped and not self.in_air:
                jump_fx.play()
                self.vel_y = -15
                self.jumped = True

            # Handle 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]
                elif self.direction == -1:
                    self.image = self.images_left[self.index]

            # Add gravity
            self.vel_y += 1
            if self.vel_y > 10:
                self.vel_y = 10
            dy += self.vel_y

            # Check for collision
            self.in_air = True
            for tile in world.tile_list:
                # Check for collision in x direction
                if tile[1].colliderect(self.rect.x + dx, self.rect.y, self.width, self.height):
                    dx = 0
                # Check for collision 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 collision with enemies
            if pygame.sprite.spritecollide(self, cyborg_group, False):
                game_over = -1
                game_over_fx.play()

            # Check for collision with spike
            if pygame.sprite.spritecollide(self, spike_group, False):
                game_over = -1
                game_over_fx.play()

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

            # Check for collision with platforms
            for platform in platform_group:
                # Collision in the x direction
                if platform.rect.colliderect(self.rect.x + dx, self.rect.y, self.width, self.height):
                    dx = 0
                # Collision in the y direction
                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 the platform
                    if platform.move_x != 0:
                        self.rect.x += platform.move_direction

            # *** Prevent player from moving off screen (left and right) ***
            if self.rect.left + dx < 0:
                dx = -self.rect.left  # stop at left edge
            if self.rect.right + dx > screen_width:
                dx = screen_width - self.rect.right  # stop at right edge

            # Update player coordinates
            self.rect.x += dx
            self.rect.y += dy

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

        # Draw player onto screen
        screen.blit(self.image, self.rect)

        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'img/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('img/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 = []

        #load images
        rstick_img = pygame.image.load('img/rstick.png')
        bstick_img = pygame.image.load('img/bstick.png')

        row_count = 0
        for row in data:
            col_count = 0
            for tile in row:
                if tile == 1:
                    img = pygame.transform.scale(rstick_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(bstick_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:
                    cyborg = Enemy(col_count * tile_size, row_count * tile_size + 15)
                    cyborg_group.add(cyborg)
                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:
                    spike = Spike(col_count * tile_size, row_count * tile_size + (tile_size // 2))
                    spike_group.add(spike)
                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])

class Enemy(pygame.sprite.Sprite):
    def __init__(self, x, y):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.image.load('img/cyborg.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('img/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 Spike(pygame.sprite.Sprite):
    def __init__(self, x, y):
        pygame.sprite.Sprite.__init__(self)
        img = pygame.image.load('img/spike.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('img/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('img/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)

cyborg_group = pygame.sprite.Group()
platform_group = pygame.sprite.Group()
spike_group = pygame.sprite.Group()
coin_group = pygame.sprite.Group()
exit_group = pygame.sprite.Group()

#create dummy coin for showing the 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'level{level}_data'):
    pickle_in = open(f'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)

# Variables for fade message display & cooldown
show_not_enough_coins = False
fade_start_time = 0
fade_duration = 5000  # Show image 5 seconds total
fade_out_start = 1000  # Start fade after 1 second
not_enough_coins_alpha = 255
not_enough_coins_cooldown = 5000  # cooldown 5 seconds
last_not_enough_coins_time = -not_enough_coins_cooldown  # negative to allow immediate first display

run = True
while run:
    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:
            cyborg_group.update()
            platform_group.update()
            #update score
            #check if a coin has been collected
            if pygame.sprite.spritecollide(player, coin_group, True):
                score += 1
                coins_collected += 1  # Increment coins collected
                coin_fx.play()
            draw_text('X ' + str(score), font_score, white, tile_size - 10, 10)
       
        cyborg_group.draw(screen)
        platform_group.draw(screen)
        spike_group.draw(screen)
        coin_group.draw(screen)
        exit_group.draw(screen)

        game_over = player.update(game_over)

        # Check for immediate restart of fade with SPACE bar
        keys = pygame.key.get_pressed()
        if show_not_enough_coins and keys[pygame.K_SPACE]:
            show_not_enough_coins = False

        # if player has died
        if  game_over == -1:
            # Draw everything one last time
            player.image = player.dead_image
            screen.blit(player.image, player.rect)

            # Show "you died" image and restart button
            dead_img = pygame.image.load('img/you_died.jpg').convert()
            dead_img = pygame.transform.scale(dead_img, (400, 200))
            screen.blit(dead_img, (screen_width // 2 - 200, screen_height // 2 - 150))

            if restart_button.draw():
                world_data = []
                world = reset_level(level)
                game_over = 0
                score = 0
                coins_collected = 0  # reset coins on restart

        # if player has completed the level
        if game_over == 1:
            current_time = pygame.time.get_ticks()
            if coins_collected < 5:  # Check if all coins collected for the level
                # Only start fade message if cooldown passed and not already showing
                if not show_not_enough_coins and (current_time - last_not_enough_coins_time) >= not_enough_coins_cooldown:
                    show_not_enough_coins = True
                    fade_start_time = current_time
                    not_enough_coins_alpha = 255
                    last_not_enough_coins_time = current_time
                # Display fading getcoins image if in fade time
                if show_not_enough_coins:
                    elapsed = current_time - fade_start_time
                    if elapsed < fade_duration:
                        # Fade out begins after fade_out_start (1 second), fades out over remaining 4 seconds
                        if elapsed > fade_out_start:
                            fade_progress = (elapsed - fade_out_start) / (fade_duration - fade_out_start)
                            not_enough_coins_alpha = max(0, 255 - int(255 * fade_progress))
                        else:
                            not_enough_coins_alpha = 255
                        not_enough_coins_img.set_alpha(not_enough_coins_alpha)
                        screen.blit(not_enough_coins_img, (screen_width // 2 - not_enough_coins_img.get_width() // 2,
                                                           screen_height // 2 - not_enough_coins_img.get_height() // 2))
                    else:
                        # Fade complete, end showing message
                        show_not_enough_coins = False
                # Reset game_over to 0 so player can keep playing; do not advance level
                game_over = 0
            else:
                level += 1
                if level <= max_levels:
                    #reset level
                    world_data = []
                    world = reset_level(level)
                    game_over = 0
                    coins_collected = 0  # Reset coins collected for the new level
                else:
                    #you won screen image pop up
                    screen.blit(won_img, (screen_width // 2 - won_img.get_width() // 2, screen_height // 2 - won_img.get_height() // 2))
                    if restart_button.draw():
                        level = 1
                        world_data = []
                        world = reset_level(level)
                        game_over = 0
                        score = 0
                        coins_collected = 0  # Reset coins collected when restarting

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

    pygame.display.update()

pygame.quit()