from gamedata.objects.base import BaseObject
from gamedata.objects.ingame.lemmings import Lemming

import random

class Spawner(BaseObject):
    def __init__(self,game,tiles,speedmargin=5,skins={"normal":["base"],"specials":[]}):
        spawnpoint = random.choice(tiles.spawns)
        super().__init__(spawnpoint[0],spawnpoint[1],game)
        self.sprite = game.sprite_lib["lemmings/shadow.png"].copy()
        self.speedmargin = speedmargin
        self.distance = game.DISPLAY_HEIGHT
        self.timer = game.lib.Timer(2.5+random.random()) # Seconds of telegraph before spawning the lemming

        self.handlepause = True

        # Skin choosing
        self.skin = random.choice(skins["normal"])
        if random.randint(1,10)==1: # 1/10 chance to have a special
            if len(skins["specials"])>0:
                self.skin = random.choice(skins["specials"])
        self.fallsprite = game.sprite_lib["lemmings/"+self.skin+"/falling.png"]

        # Depth updating based on position
        self.depth = 1+self.rect[1]/100

    def step(self):
        if self.timer.tick(self.game.dt):
            lemming = Lemming(self.rect[0],self.rect[1],self.game,speedmargin=self.speedmargin,skin=self.skin)
            lemming.move(-lemming.rect[2]/2,-lemming.rect[3]/2)
            self.game.gameloop.summon(lemming)
            self.game.gameloop.delid(self.id)
            self.game.globals["scamerax"]+=3
            self.game.globals["scameray"]+=3

            # Spawn dust particles
            sprites = self.game.getSpriteDir("particles/dust/")
            self.game.addParticle(sprites,self.rect[0],self.rect[1]+20,velx=-1,vely=-0.5)
            self.game.addParticle(sprites,self.rect[0],self.rect[1]+20,velx=1,vely=-0.5)


    def draw(self):
        # Draw the shadow
        alphavalue = 1-self.timer.getratio()
        alphavalue = min(1,alphavalue)*255
        self.sprite.set_alpha(alphavalue)
        self.game.lib.drawcenter(self.game,self.sprite,self.rect[0]-self.game.globals["camerax"],self.rect[1]-self.game.globals["cameray"])

        # Display the lemming falling
        currentdistance = self.distance*self.timer.getratio()**0.9
        self.game.lib.drawcenter(self.game,self.fallsprite,self.rect[0]-self.game.globals["camerax"],self.rect[1]-currentdistance-self.game.globals["cameray"])