# -*- coding: utf-8 -*-

import pygame
import math
import random

pygame.init()

size = (1000,700)
bgcolor = (120,120,120)

screen = pygame.display.set_mode(size)
screen.fill(bgcolor)

pygame.display.set_caption("strategispel")

isRunning = True
clock = pygame.time.Clock()

background = pygame.Surface(size)
background.fill(bgcolor)

class DragSelector(pygame.sprite.Sprite):

    def __init__(self, startPos):

        pygame.sprite.Sprite.__init__(self)

        self.startPos = startPos
        self.image = pygame.Surface((0,0))
        self.image.convert_alpha()
        self.image.set_alpha(120)
    def update(self, pos):

        selectorSize = (pos[0] - self.startPos[0], pos[1] - self.startPos[1])

        self.image = pygame.Surface(selectorSize)
        self.image.convert_alpha()
        self.image.set_alpha(120)
        self.rect = pygame.draw.rect(self.image,(255,0,0), (self.startPos[0],self.startPos[1],selectorSize[0],selectorSize[1]))

class Creep(pygame.sprite.Sprite):

        pass


creeps = pygame.sprite.Group(
                              Creep((random.randint(1,size[0]),random.randint(1,size[1]))),
                              Creep((random.randint(1,size[0]),random.randint(1,size[1]))),
                              Creep((random.randint(1,size[0]),random.randint(1,size[1]))),
                              Creep((random.randint(1,size[0]),random.randint(1,size[1]))),
                              Creep((random.randint(1,size[0]),random.randint(1,size[1]))),
                              Creep((random.randint(1,size[0]),random.randint(1,size[1]))),
                              Creep((random.randint(1,size[0]),random.randint(1,size[1]))),
                              Creep((random.randint(1,size[0]),random.randint(1,size[1]))),
                              Creep((random.randint(1,size[0]),random.randint(1,size[1]))),
                              Creep((random.randint(1,size[0]),random.randint(1,size[1]))),
                              Creep((random.randint(1,size[0]),random.randint(1,size[1]))),
                              Creep((random.randint(1,size[0]),random.randint(1,size[1]))),
                              Creep((random.randint(1,size[0]),random.randint(1,size[1]))),
                              Creep((random.randint(1,size[0]),random.randint(1,size[1]))),
                              Creep((random.randint(1,size[0]),random.randint(1,size[1]))),
                              Creep((random.randint(1,size[0]),random.randint(1,size[1]))),
                              Creep((random.randint(1,size[0]),random.randint(1,size[1])))
                              )

selector = pygame.sprite.Group(DragSelector((1,1)))

while isRunning:

    clock.tick(50)

    for event in pygame.event.get():

        if event.type == pygame.QUIT:

            isRunning = False

        for creep in creeps:

            creep.eventHandler(event)

    creeps.clear(screen,background)
    creeps.update()
    creeps.draw(screen)

    selector.clear(screen,background)
    selector.update(pygame.mouse.get_pos())
    selector.draw(screen)

    pygame.display.flip()