#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Mon Jan 27 16:32:02 2020

@author: suwako
"""

import numpy as np


class Mass():
    def __init__(self, pos=(0,0), speed=(0,0), mass=1):
        self.pos = np.array(pos, dtype='float64')
        self.speed = np.array(speed, dtype='float64')
        self.mass = mass
        self.G = 0.0000001

    def tick(self):
        self.pos += self.speed

    def apply_gravity(self, elements):
        for element in elements:
            d = element.pos - self.pos
            norm_d = np.linalg.norm(d)
            if norm_d != 0:
                u = d/norm_d
                norm = self.G * element.mass * (d[0]**2 + d[1]**2)
                self.speed += norm*u


class Player(Mass):
    def __init__(self, keys={},
                 orientation=0,
                 pos=(0, 0),
                 speed=(0, 0),
                 mass=1):
        Mass.__init__(self, pos=pos, speed=speed, mass=mass)
        self.orientation = orientation
        self.actions = {"thrust": False, "fire": False}
        self.actions.update(keys)

    def action(self, keys):
        self.actions.update(keys)
if __name__ == "__main__":
    pass