# Example file showing a basic pygame "game loop"
import pygame
import math

# pygame setup
pygame.init()
pygame.font.init()
screen = pygame.display.set_mode((1280, 720))
clock = pygame.time.Clock()
running = True


class Ball ( object ) :

    def __init__ ( self, x, y ) :
        self.x = x
        self.y = y
        self.width = 20
        self.height = 20
        self.x_vel = 200
        self.y_vel = 200

    def draw ( self ) :
        pygame.draw.rect(screen, pygame.Color(0, 255, 0, 255), pygame.Rect(self.x, self.y, self.width, self.height))

    def update ( self, dt, width, height, players ) :
        if self.x > width :
            self.x_vel *= -1
            players[0].points += 1
        if self.x < 0  :
            self.x_vel *= -1
        if self.y > height or self.y < 0:
            self.y_vel *= -1

        for player in players :
            if self.y > player.y and self.y < player.y + player.height :
                if self.x > player.x and self.x < player.x + player.width :
                    self.x_vel *= -1

        self.x += self.x_vel * dt
        self.y += self.y_vel * dt

    def draw_points ( self, rects, length ) :
        num_points = 360
        size = length
        vertices = []

        for i in range(num_points) :
            angle = 2 * math.pi * i / num_points
            x = (self.x + self.width * math.cos(angle)) + self.width / 2
            y = (self.y + self.height * math.sin(angle)) + self.height / 2
            end_x = (self.x + size * math.cos(angle)) + self.width / 2
            end_y = (self.y + size * math.sin(angle)) + self.height / 2

            current_end_x = end_x
            current_end_y = end_y

            for i2 in range(len(rects)) :
                (ex, ey) = line_rect_intersection(x, y, end_x, end_y, rects[i2], size)

                if find_line_length(x, y, ex, ey) < find_line_length(x, y, current_end_x, current_end_y):
                    current_end_x = ex
                    current_end_y = ey

            vertices.append([current_end_x, current_end_y])

            #pygame.draw.line(screen, pygame.Color(255, 255, 255, 255), ( x, y ), ( current_end_x, current_end_y ))

        surface2 = pygame.Surface((screen.get_width(),screen.get_height()))
        surface2.set_colorkey((0,0,0))
        surface2.set_alpha(80)
        pygame.draw.polygon(surface2, pygame.Color(0, 0, 255, a = 255), vertices)




        return pygame.mask.from_surface(surface2), surface2


def find_line_length(start_x, start_y, end_x, end_y):
    dx = end_x - start_x
    dy = end_y - start_y

    distance_squared = dx * dx + dy * dy

    return math.sqrt(distance_squared)


def line_rect_intersection(start_x, start_y, end_x, end_y, rect, max_size):
    # end

    t_min = 0.0
    t_max = 1.0

    dx = end_x - start_x
    dy = end_y - start_y

    p1 = [-dx, dx, -dy, dy]
    p2 = [start_x - rect.x, rect.x + rect.width - start_x, start_y - rect.y, rect.y + rect.height - start_y]

    for i in range(4):
        if p1[i] == 0.0:
            if p2[i] < 0.0:
                return (end_x, end_y)  # Line is outside the rectangle, return the original end point
        else:
            t = p2[i] / p1[i]
            if p1[i] < 0.0:
                t_min = max(t_min, t)
            else:
                t_max = min(t_max, t)

    if t_min > t_max:
        return (end_x, end_y)  # Line is outside the rectangle, return the original end point

    collision_x = start_x + t_min * dx
    collision_y = start_y + t_min * dy
    return (collision_x, collision_y)


class Player ( object ) :

    def __init__ ( self, x ) :
        self.x = x
        self.y = 10
        self.height = 100
        self.width = 20
        self.up = False
        self.down = False
        self.movement_speed = 400
        self.points = 0

    def draw ( self ) :
        pygame.draw.rect(screen, pygame.Color(255, 0, 0, 255), pygame.Rect(self.x, self.y, self.width, self.height))

    def update ( self, dt ) :
        if self.up :
            self.y -= self.movement_speed * dt
        if self.down :
            self.y += self.movement_speed * dt





getTicksLastFrame = 0
player = Player(10)
player2 = Player(screen.get_width() - 30)
ball = Ball(screen.get_width() / 2, screen.get_height() / 2)

while running:

    t = pygame.time.get_ticks()
    # deltaTime in seconds.
    deltaTime = (t - getTicksLastFrame) / 1000.0
    getTicksLastFrame = t




    # poll for events
    # pygame.QUIT event means the user clicked X to close your window
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        if event.type == pygame.KEYDOWN:
            if event.dict.get("unicode") == "w" :
                player.up = True
            if event.dict.get("unicode") == "s" :
                player.down = True
            # Up
            if event.dict.get("key") == 1073741906:
                player2.up = True
            if event.dict.get("key") == 1073741905:
                player2.down = True
        if event.type == pygame.KEYUP :
            if event.dict.get("unicode") == "w" :
                player.up = False
            if event.dict.get("unicode") == "s" :
                player.down = False
            # Up
            if event.dict.get("key") == 1073741906:
                player2.up = False
            if event.dict.get("key") == 1073741905:
                player2.down = False


    # fill the screen with a color to wipe away anything from last frame
    screen.fill("black")

    # RENDER YOUR GAME HERE



    player.update(dt=deltaTime)
    player2.update(dt=deltaTime)


    ball.update(dt=deltaTime, width=screen.get_width(), height=screen.get_height(), players=[player, player2])
    ball.draw()



    ####
    player.draw()
    player2.draw()



    mask, surface5 = ball.draw_points(rects=[pygame.Rect(200, 200, 20, 20)], length=50)
    mask, surface6 = ball.draw_points(rects=[pygame.Rect(200, 200, 20, 20)], length=100)
    mask, surface7 = ball.draw_points(rects=[pygame.Rect(200, 200, 20, 20)], length=150)
    mask, surface8 = ball.draw_points(rects=[pygame.Rect(200, 200, 20, 20)], length=200)





    filter = pygame.surface.Surface((screen.get_width(), screen.get_height()))
    filter.fill(pygame.color.Color(200, 200,200))
    filter.blit(surface5, (0, 0))
    filter.blit(surface6, (0, 0))
    filter.blit(surface7, (0, 0))
    filter.blit(surface8, (0, 0))
    screen.blit(filter, (0, 0), special_flags=pygame.BLEND_RGBA_SUB)

    filter = pygame.surface.Surface((screen.get_width(), screen.get_height()))
    filter.fill(pygame.color.Color(0, 0,0))
    filter.blit(surface5, (0, 0))
    filter.blit(surface6, (0, 0))
    filter.blit(surface7, (0, 0))
    filter.blit(surface8, (0, 0))
    screen.blit(filter, (0, 0), special_flags=pygame.BLEND_RGBA_ADD)



    screen.blit(mask.to_surface(), (0, 0), special_flags=pygame.BLEND_RGBA_MIN)


    ####

    pygame.draw.rect(screen, pygame.Color(100, 100, 100), pygame.Rect(200, 200, 20, 20))

    text_surface = pygame.font.Font(pygame.font.get_default_font(), 48).render(str(player.points), False, pygame.Color(200, 200, 200))
    screen.blit(text_surface, ( 100, 100 ))

    text_surface = pygame.font.Font(pygame.font.get_default_font(), 48).render(str(int( 1 / deltaTime)), False, pygame.Color(0, 255, 0))
    screen.blit(text_surface, ( screen.get_width() - 200, screen.get_height() - 100 ))

    # flip() the display to put your work on screen
    pygame.display.flip()

    clock.tick(60)  # limits FPS to 60

pygame.quit()