# -*- coding: UTF-8 -*-
import pygame
import os
import sys
import time
import abc
from PIL import Image

#从模式RGB转换为“L”模式时按照下面的公式转换的L = R*299/1000 + G*578/1000 + B*114/1000
#https://blog.csdn.net/misaka_s/article/details/76668511
class BaseImage(object):
    """在背景屏幕打印一个图片打基础"""
    def __init__(self,bgScreen):
        try: 
            self.imageName = self.imageName
        except AttributeError as e:
        #error:has not attribute
            self.imageName = "./images/bomb-2.gif"
        #打开图像文件。不想检测错误了
        self.img = Image.open(self.imageName)
        #获取图片的尺寸
        self.imgWidth = self.img.width
        self.imgHeight = self.img.height
        #设置要显示内容打窗口
        self.bScreen = bgScreen
        self.imageScreen = pygame.image.load(self.imageName).convert()
        #显示图片
    def display(self):
        self.bScreen.screen.blit(self.imageScreen,(self.x,self.y))

    #向左
    def moveLeft(self,speed=10):
        if self.x > (speed - 10 -self.imgWidth/2):
            self.x -= speed
        else:
            self.x = spped - 10 - self.imgWidth/2

    #向右
    def moveRight(self,speed=10):
        if self.x < (self.bScreen.x - speed - self.imgWidth/2):
            self.x += speed
        else:
            self.x = self.bScreen.x - speed - self.imgWidth/2

    #向上
    def moveUp(self,speed=10):
        if self.y > speed:
            self.y -= speed
        else:
            self.y = 0

    #向下
    def moveDown(self,speed=10):
        if self.y < (self.bScreen.y - self.imgHeight - speed):
            self.y += speed
        else:
            self.y = self.bScreen.y - self.imgHeight