# Author: Prof. Mark Sherriff
# Modified from example by Prof. Mark Sherriff

# goal
# feedback - achieve the goal
# behavior

import pygame
import gamebox
import random


camera = gamebox.Camera(800, 600)
character = gamebox.from_color(camera.x, camera.y, "red", 20, 40)

# coins = [gamebox.from_color(300, 450, "yellow", 12, 12)]
# create coin at random location every time a tick function is called
coins = [gamebox.from_color(random.randint(50, 750), -10, "yellow", 12, 12)]

bonus = gamebox.from_color(camera.x-100, camera.y, "green", 40, 40)

walls = [
    gamebox.from_color(400, 600, "black", 1000, 100)     # ground
]

# platforms = [
#     gamebox.from_color(random.randrange(0, 800), random.randrange(0,600), "black",
#                        random.randrange(70, 400), 20)     # obstacle
# ]
platforms = []
for y in range(0, 600, 150):
    platforms.append(gamebox.from_color(random.randrange(0, 800), y, 'black',
        random.randrange(100, 500), 20))

character.yspeed = 0

time = 900   # 9000   # 5mins * 60seconds * 30ticks
score = 0

def tick(keys):
    global time, score

    # clear display and set color
    camera.clear("blue")

# -----------------------#

    # decrease timer (update the state of the game )
    time -= 1

    # calculate minutes, seconds, fractions of seconds
    frac = str(int((time%ticks_per_second)/ticks_per_second*10))
    seconds = str(int((time/ticks_per_second)%60)).zfill(2)
    minutes = str(int((time/ticks_per_second)/60))
    timer = gamebox.from_text(650,100, "Time remaining " + minutes+":"+seconds+":"+frac, 24, "white")

# -----------------------#

    # handle player's movement
    if pygame.K_RIGHT in keys:    # if a right arrow is pressed, do something
        character.x += 10
    if pygame.K_LEFT in keys:
        character.x -= 10
    character.yspeed += 1
    character.y = character.y + character.yspeed

# -----------------------#

    # reset our character to ensure it's on the screen
    if character.x < 0:
        character.x = 800
    elif character.x > 800:
        character.x = 0

# -----------------------#

    # let's move platforms
    for platform in platforms:
        platform.y += 3

        # if a platform goes below the screen, reuse it
        if platform.top > camera.bottom + 20:   # 20 to give a bit space
            platform.y = -50  # move this wall above the camera so we can reuse it
            platform.x = random.randrange(0, 800)   # randomly pick x
            platform.size = random.randrange(70, 400), 20  # randomly pick width

        # if the bottom of the character touches the platform
        # allow it to jump
        if character.bottom_touches(platform):
            character.yspeed = 0
            if pygame.K_SPACE in keys:   # if a spacebar is pressed, jump
                character.yspeed = -15

        # handle collision detection
        if character.touches(platform):
            character.move_to_stop_overlapping(platform)

        camera.draw(platform)

#-----------------------#

    # draw ground
    for wall in walls:
        # if the bottom of the character touches a wall, make it stays on the wall
        # and allows it to jump
        if character.bottom_touches(wall):
            character.yspeed = 0
            if pygame.K_SPACE in keys:   # if a spacebar is pressed, jump
                character.yspeed = -15
        if character.touches(wall):     # handle collision detection
            character.move_to_stop_overlapping(wall)
        camera.draw(wall)

# -----------------------#

    # draw coins (collectible objects)
    for coin in coins:
        coin.speedy += 0.03  # acceleration on horizontal direction
        if character.touches(coin):
            score += 1     # if a character touches a coin, increment scores
            coins.remove(coin)  # remove that coin from the list to avoid repeatedly increase score
        else:
            coin.move_speed()   # move the coin with the current speed
        camera.draw(coin)

# -----------------------#
    # to make sure that we won't run out of coins
    if len(coins) < 2:
        new_coin = gamebox.from_color(random.randint(50,750), -10, "yellow", 12, 12)
        coins.append(new_coin)

    score_box = gamebox.from_text(100, 100, "Score " + str(score), 24, "white")

# -----------------------#

    # let's say this is a big prize, a character needs to jump up till it reaches this
    camera.draw(bonus)

# -----------------------#
    camera.draw(character)
    camera.draw(timer)
    camera.draw(score_box)
# -----------------------#
    # set time limit
    if time <= 0:
        camera.draw(gamebox.from_text(400, 300, "Game over !!!", "Arial", 70, "white"))
        gamebox.pause()

    # if a character touches the bonus prize, win the game
    if character.touches(bonus):
        camera.draw(gamebox.from_text(camera.x, camera.y, "You won !!!", "Arial", 70, "green"))
        gamebox.pause()

# -----------------------#

    camera.display()   # usually, keep this line at the end of the function

# -----------------------#

ticks_per_second = 30
gamebox.timer_loop(ticks_per_second, tick)   # timer_loop makes the game run