#!/usr/bin/env python3

import sys
import pygame
from classes.towers.bubbler import Bubbler
from classes.enemies.ogre import Ogre
from classes.settings import Settings
from classes.levels import Levels
from classes.map import Map

settings = Settings()
levels = Levels()
map = Map()

# Init pygame and set up screen.
pygame.init()
screen = pygame.display.set_mode(settings.size)

# Storage of towers and projectiles
towers = []
enemies = []
projectiles = []

while True:
    for event in pygame.event.get():
        pressedKeys = pygame.key.get_pressed()
        if event.type == pygame.QUIT:
            sys.exit()

        if event.type == pygame.MOUSEBUTTONDOWN:
            newTowerCoordinates = map.canBuildOnCooardinate(event.pos, towers)

            if newTowerCoordinates:
                towers.append(Bubbler(newTowerCoordinates))

        if event.type == pygame.KEYDOWN:
            if pressedKeys[pygame.K_SPACE]:
                enemies.append(Ogre(settings.enemyStart))

    # Spawn enemies according to the level
    newEnemy = levels.get_enemy()
    if newEnemy:
        enemies.append(newEnemy)

    # Draw map to screen
    screen = map.draw(screen)

    # Draw all enemies
    for enemy in enemies:
        # If move return false, remove the projectile
        if not enemy.move():
            enemies.remove(enemy)
            continue

        # Remove enemies that got through to base
        if enemy.inBase:
            enemies.remove(enemy)

        # If enemy got low health, remove it
        if enemy.get_health() <= 0:
            enemies.remove(enemy)
            continue

        screen = enemy.draw(screen)

    # Draw all the towers on the screen
    for tower in towers:
        projectile = None

        # Try to shoot (if we got an enemy)
        if len(enemies) > 0:
            projectile = tower.shoot(enemies[0].rect)

        # If successfull, store projectile
        if projectile is not None:
            projectiles.append(projectile)

        # Draw the tower
        screen = tower.draw(screen)

    # Draw, move and remove projectiles on the screen
    for projectile in projectiles:
        # If move return false, remove the projectile
        if not projectile.move():
            projectiles.remove(projectile)
            continue

        # If projectile collides with an enemy, projectile
        # will deal damage to the enemy and then we remove
        # the projectile
        if projectile.collidesWith(enemies):
            projectiles.remove(projectile)
            continue

        # Draw the projectile
        screen = projectile.draw(screen)

    # Draw screen
    pygame.display.flip()