import ode, pygame, os
from pygame.locals import *
from functions import load_image, normalize
from random import randint

class Particle(pygame.sprite.Sprite):
    def __init__(self):
        pygame.sprite.Sprite.__init__(self)
        a = randint(1,3)
        self.image, self.rect = load_image("blood0"+str(a)+".png",-1)
        self.image.set_alpha(randint(150,250))
        
class Blood:
    def __init__(self,opcje):
        self.particles = []
        for i in range(opcje["BloodAmount"]):
            self.particles.append(Particle())
            #self.particles[-1].image, self.particles[-1].rect = load_image('blood.png', -1)
            
    def spawn(self,startpos,direction):
        x,y = startpos[0],startpos[1]
        dirx,diry = direction[0],direction[1]
        for drop in self.particles:
            drop.rect.center = (x+randint(-10,10), y+randint(-10,10))
            drop.dir = (dirx+randint(-20,20), diry+randint(-20,20))
            drop.speed = randint(5,10)
            drop.life = randint(5,15)
            
    def update(self,tlo):
        for drop in self.particles:
            drop.dir = normalize(drop.dir)
            drop.rect.center = (drop.rect.center[0]+drop.dir[0]*drop.speed,drop.rect.center[1]+drop.dir[1]*drop.speed)
            drop.life -= 1
            if (drop.life == 0):
                tlo.blit(drop.image,drop.rect.center)
                #self.particles.remove(drop)