對象跟隨滑鼠移動（用向量）

標籤：quit   ini   set   back   nat   obj   local   filename   ges   

這裡下載一個gameobject的庫，封裝了向量計算

 

#_*_coding:utf-8_*_from gameobjects.vector2 import *background_image_filename=‘./images/sea.jpg‘sprite_image_filename=‘./images/fish.png‘import pygamefrom pygame.locals import *from sys import exitpygame.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    #參數前面加*：把列表或元祖展開    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()

 

對象跟隨滑鼠移動（用向量）