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  • 对象跟随鼠标移动(用向量)

    这里下载一个gameobject的库,封装了向量计算

    #_*_coding:utf-8_*_
    
    from gameobjects.vector2 import *
    
    background_image_filename='./images/sea.jpg'
    sprite_image_filename='./images/fish.png'
    
    import pygame
    from pygame.locals import *
    from sys import exit
    
    pygame.init()
    screen=pygame.display.set_mode((640,480),0,32)
    background=pygame.image.load(background_image_filename).convert()
    sprit=pygame.image.load(sprite_image_filename)
    
    clock=pygame.time.Clock()
    position=Vector2(100.0,100.0)
    heading=Vector2()
    while True:
        for event in pygame.event.get():
            if event.type==QUIT:
                exit()
        screen.blit(background,(0,0))
        screen.blit(sprit,position)
        time_passed_seconds=clock.tick()/1000.0
        #参数前面加*:把列表或元祖展开
        destination=Vector2(*pygame.mouse.get_pos())-Vector2(*sprit.get_size())/2.
        vector_to_mouse=Vector2.from_points(position,destination)
        vector_to_mouse.normalize()
    
        heading=heading+(vector_to_mouse/6)
        position+=heading*time_passed_seconds
        pygame.display.update()
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  • 原文地址:https://www.cnblogs.com/superxuezhazha/p/7440438.html
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