from . import map
import pygame as pg
import numpy as np

class App:
    def __init__(self, world):
        pg.init()
        self.screen = pg.display.set_mode((800, 600))
        self.clock = pg.time.Clock()
        self.running = True
        self.world = world
        self.map = map.Map(self.world)

    def start(self):
        dt = 0.0

        while self.running:
            start = pg.time.get_ticks()

            for event in pg.event.get():
                if event.type == pg.QUIT:
                    self.running = False
        
            # EVENTS
            # ======
            keys = pg.key.get_pressed()
            delta = np.array([0.0, 0.0])

            if keys[pg.K_UP]:
                delta[1] -= 1.0 
            if keys[pg.K_DOWN]:
                delta[1] += 1.0 
            if keys[pg.K_LEFT]:
                delta[0] -= 1.0 
            if keys[pg.K_RIGHT]:
                delta[0] += 1.0 

            player = self.world.get_player()
            norm = np.linalg.norm(delta)
            if norm > 0:
                delta /= norm
                delta *= player.speed
            player.pos += delta * dt

            self.screen.fill('black')
            self.map.draw(self.screen)
            pg.display.flip()
            self.clock.tick(60)
            dt = (pg.time.get_ticks() - start)/1000.0
        pg.quit()