import pygame
import random
import time
from kart import Kart, Item


# -------------------------
# Einstellungen
# -------------------------

WIDTH = 1000
HEIGHT = 700
FPS = 60

BACKGROUND = (40, 40, 40)


# -------------------------
# Hilfsfunktion zum Zeichnen
# -------------------------

def draw_kart(screen, kart):
    # Kart als Rechteck
    width = 40
    height = 25

    surface = pygame.Surface((width, height), pygame.SRCALPHA)
    pygame.draw.rect(surface, kart.color, (0, 0, width, height))

    # Richtung des Karts
    rotated = pygame.transform.rotate(surface, -kart.rotation)

    rect = rotated.get_rect(
        center=(int(kart.position[0]), int(kart.position[1]))
    )

    screen.blit(rotated, rect)


# -------------------------
# Pool zeichnen
# -------------------------

def draw_pool(screen, pool):
    pygame.draw.ellipse(
        screen,
        pool.color,
        (
            int(pool.position[0] - pool.size),
            int(pool.position[1] - pool.size / 2),
            int(pool.size * 2),
            int(pool.size)
        )
    )


# -------------------------
# Main
# -------------------------

def main():
    pygame.init()

    screen = pygame.display.set_mode((WIDTH, HEIGHT))
    pygame.display.set_caption("Kart Game")

    clock = pygame.time.Clock()

    # -------------------------
    # Karts erzeugen
    # -------------------------

    kart1 = Kart(
        "Player 1",
        (255, 50, 50),
        acceleration=0.2,
        vMax=5,
        handling=4
    )

    kart2 = Kart(
        "Player 2",
        (50, 100, 255),
        acceleration=0.2,
        vMax=5,
        handling=4
    )

    # Startpositionen
    kart1.position = [250, 350]
    kart1.rotation = 0

    kart2.position = [750, 350]
    kart2.rotation = 180

    # -------------------------
    # Pool
    # -------------------------

    pool = None

    # Zeitpunkt, wann der nächste Pool erscheint
    nextPoolTime = time.time() + random.uniform(3, 8)

    running = True

    while running:

        # -------------------------
        # Events
        # -------------------------

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

        # -------------------------
        # Pool erzeugen / entfernen
        # -------------------------

        currentTime = time.time()

        # Wenn momentan kein Pool existiert
        # und die Wartezeit vorbei ist
        if pool is None and currentTime >= nextPoolTime:

            pool = Item("pool")
            pool.typ()

            # Zufällige Position
            pool.position = [
                random.randint(80, WIDTH - 80),
                random.randint(80, HEIGHT - 80)
            ]

            # Zufällige Größe
            pool.size = random.randint(40, 80)

            # Pool bleibt unterschiedlich lange sichtbar
            poolEndTime = currentTime + random.uniform(3, 7)

        # Pool verschwinden lassen
        if pool is not None and currentTime >= poolEndTime:

            pool = None

            # Unregelmäßige Zeit bis zum nächsten Pool
            nextPoolTime = currentTime + random.uniform(3, 10)

        keys = pygame.key.get_pressed()

        # -------------------------
        # Kart 1
        # WASD + E
        # -------------------------

        # W = Gas
        if keys[pygame.K_w]:
            kart1.acc(False)

        # S = Rückwärts / Bremsen
        elif keys[pygame.K_s]:
            kart1.acc(True)

        # Wenn kein Gas/Bremse -> langsam abbremsen
        else:
            kart1.speed *= 0.98

        # A = links
        if keys[pygame.K_a]:
            kart1.turn(-1)

        # D = rechts
        if keys[pygame.K_d]:
            kart1.turn(1)

        # E = Rammen
        if keys[pygame.K_e]:
            kart1.ram(kart2)

        # -------------------------
        # Kart 2
        # IJKL + O
        # -------------------------

        # I = Gas
        if keys[pygame.K_i]:
            kart2.acc(False)

        # K = Rückwärts / Bremsen
        elif keys[pygame.K_k]:
            kart2.acc(True)

        else:
            kart2.speed *= 0.98

        # J = links
        if keys[pygame.K_j]:
            kart2.turn(-1)

        # L = rechts
        if keys[pygame.K_l]:
            kart2.turn(1)

        # O = Rammen
        if keys[pygame.K_o]:
            kart2.ram(kart1)

        # -------------------------
        # Position aktualisieren
        # -------------------------

        kart1.pos()
        kart2.pos()

        # -------------------------
        # Bildschirm verlassen?
        # -> auf andere Seite wechseln
        # -------------------------

        # Abstand zum Bildschirmrand
        border = 20

        for kart in [kart1, kart2]:

            # Linker Rand
            if kart.position[0] < border:
                kart.position[0] = border

            # Rechter Rand
            if kart.position[0] > WIDTH - border:
                kart.position[0] = WIDTH - border

            # Oberer Rand
            if kart.position[1] < border:
                kart.position[1] = border

            # Unterer Rand
            if kart.position[1] > HEIGHT - border:
                kart.position[1] = HEIGHT - border

        # -------------------------
        # Zeichnen
        # -------------------------

        screen.fill(BACKGROUND)

        # Pool zeichnen
        if pool is not None:
            draw_pool(screen, pool)

        draw_kart(screen, kart1)
        draw_kart(screen, kart2)

        # Namen anzeigen
        font = pygame.font.Font(None, 28)

        text1 = font.render(
            f"{kart1.name}: {kart1.speed:.1f}",
            True,
            kart1.color
        )

        text2 = font.render(
            f"{kart2.name}: {kart2.speed:.1f}",
            True,
            kart2.color
        )

        screen.blit(text1, (20, 20))
        screen.blit(text2, (20, 50))

        pygame.display.flip()

        # FPS
        clock.tick(FPS)

    pygame.quit()


if __name__ == "__main__":
    main()