import turtle
import random
score = 0
high_score = 0
# Setting the window
window = turtle.Screen()
window.title("Space War")
window.bgcolor("white")
window.setup(width=600, height=600)
window.tracer(3)

# Player
player = turtle.Turtle()
player.speed(0)
player.shape("triangle")
player.color("brown")
player.penup()
player.goto(0, 0)

#CREATE THE BULLET
bullet = turtle.Turtle()
bullet.shape("triangle")
bullet.penup()
bullet.speed(0)
bullet.setheading(player.heading())
bullet.shapesize(0.2, 0.8)
bullet.hideturtle()

bulletspeed = 20
bulletstate = "ready"


# pen
Pen = turtle.Turtle()
Pen.speed(0)
Pen.color("black")
Pen.penup()
Pen.goto(0, 250)
Pen.hideturtle()
Pen.clear()
Pen.write("Score: {}  High Score: {}".format(score, high_score), align="center", font=("courier", 24, "normal"))

# Foods
foods = []
# Food
for index in range(4):
    food = turtle.Turtle()
    food.speed(0)
    food.shape("circle")
    food.color("green")
    food.penup()
    foods.append(food)
    food.setposition(random.randint(-250, 250), random.randint(-250, 250))

# Pen
pen = turtle.Turtle()
pen.penup()
pen.setposition(-280, -280)
pen.pendown()
pen.pensize(1)
for x in range(4):
    pen.forward(560)
    pen.left(90)
pen.hideturtle()

# Variable speed
speed = 1


# Movement function
def move_right():
    player.right(45)


def move_left():
    player.left(45)
def fire_bullet():
#DECLARE BULLETSTATE AS GLOBAL IF IT NEEDS CHANGES
    global bulletstate
    if bulletstate == "ready":
        bulletstate = "fire"
        #MOVE BULLET TO JUST ABOVE THE PLAYER
        x = player.xcor()
        y = player.ycor() + 10
        bullet.setposition(x, y)
        bullet.showturtle()


def increase_speed():
    player.up()
    global speed
    speed += 1


def decrease_speed():
    player.down()
    global speed
    speed -= 1


# Keyboard binding
window.listen()
window.onkeypress(move_right, "Right")
window.onkeypress(move_left, "Left")
window.onkeypress(increase_speed, "Up")
window.onkeypress(decrease_speed, "Down")
window.onkeypress(fire_bullet, "space")
# main game loop
while True:
    window.update()

    # Default player movement
    player.forward(speed)

    # player boundary checking
    if player.xcor() > 260 or player.xcor() < -260 or player.ycor() > 260 or player.ycor() < -260:
        player.right(180)
    #MOVE BULLET
    if bulletstate == "fire":
        y = bullet.ycor()
        y += bulletspeed
        bullet.sety(y)


    #CHECK IF BULLET HAS GONE TO TOP
    if bullet.ycor() > 275:
        bullet.hideturtle()
        bulletstate = "ready"



    # Move food
    for food in foods:
        food.forward(1)

        # Foods boundary checking
        if food.xcor() > 260 or food.xcor() < -260 or food.ycor() > 260 or food.ycor() < -260:
            food.right(180)

        # Check collision between player and food
        if food.distance(player) < 20:
            x = random.randint(-260, 260)
            y = random.randint(-260, 260)
            food.goto(x, y)





window.mainloop()