# coding: utf-8
from scene import *

class Alien (SpriteNode):
	def __init__(self, start, **kwargs):
		SpriteNode.__init__(self, 'plf:AlienGreen_front',position=start, **kwargs)
		self.default_sprite = Texture('plf:AlienGreen_front')
		self.stand_sprite = Texture('plf:AlienGreen_stand')
		self.walk_sprites = Texture('plf:AlienGreen_walk1'), Texture('plf:AlienGreen_walk2')
		self.climb_sprites = Texture('plf:AlienGreen_climb1'), Texture('plf:AlienGreen_climb2')
		self.crouch_sprite = Texture('plf:AlienGreen_duck')
		self.jump_sprite = Texture('plf:AlienGreen_jump')
		self.swim_sprites = Texture('plf:AlienGreen_swim1'), Texture('plf:AlienGreen_swim2')
		self.hit_sprite = Texture('plf:AlienGreen_hit')
		self.frames_until_animation = 0
		self.frame_index = False
		self.facing_right = False
		self.anchor_point = .5, 0
		self.gravity = 1 #for y-coordinate only
		#State can be standing, swimming, hurt, crouching, walking, climbing, in air
		self.current_action_state = 'in air'
		self.velocity = Vector2(0, 0)
		self.bound = Rect(self.position.x - 25, self.position.y -25, 50, 100)
		self.landed = False
		self.z_position = 1

	def above_collided_object(self, item):
		self.landed = False
		if int(self.position.y) in range(int(item.bound.max_y - 2), int(item.bound.max_y - self.velocity.y)):
			self.landed = True
			self.position = (self.position.x, item.bound.max_y - self.velocity.y)

	def walk(self):
		self.frames_until_animation -= self.velocity.x
		if self.frames_until_animation < 1:
			self.frame_index = True if not self.frame_index else False
			self.frames_until_animation = 60

	def update_position(self):
		self.position += self.velocity
		self.change_facing_position()
		self.bound = Rect(self.position.x - 25, self.position.y -25, 50, 100)
		if self.landed:
			self.velocity = Vector2(0, .05)
		else:
			self.velocity -= (0, .05)

	def change_facing_position(self):
		#changes y scale
		if self.gravity < 0 and self.y_scale > 0:
			self.y_scale = -self.y_scale
		elif self.gravity > 0 and self.y_scale < 0:
			self.y_scale = abs(self.y_scale)
		#changes x scale
		if self.facing_right and self.x_scale < 0:
			self.x_scale = abs(self.x_scale)
		elif not self.facing_right and self.x_scale > 0:
			self.x_scale = -self.x_scale