*その操作のすべての部分はタプルですが、python は、この例ではそれらの 1 つがそうではないと考えているようです。Pythonでベクタークラスを作ろうとするのはこれが初めてです。私の意図は、速度の増分を追加することにより、画面上のクリックした場所に単純なマウス画像を移動することです*ターゲット距離に達するまで、その位置にベクトル
インポート数学
クラス Vector(オブジェクト):
#defaults are set at 0.0 for x and y
def __init__(self, x=0.0, y=0.0):
self.x = x
self.y = y
#allows us to return a string for print
def __str__(self):
return "(%s, %s)"%(self.x, self.y)
# from_points generates a vector between 2 pairs of (x,y) coordinates
@classmethod
def from_points(cls, P1, P2):
return cls(P2[0] - P1[0], P2[1] - P1[1])
#calculate magnitude(distance of the line from points a to points b
def get_magnitude(self):
return math.sqrt(self.x**2+self.y**2)
#normalizes the vector (divides it by a magnitude and finds the direction)
def normalize(self):
magnitude = self.get_magnitude()
self.x/= magnitude
self.y/= magnitude
#adds two vectors and returns the results(a new line from start of line ab to end of line bc)
def __add__(self, rhs):
return Vector(self.x +rhs.x, self.y+rhs.y)
#subtracts two vectors
def __sub__(self, rhs):
return Vector(self.x - rhs.x, self.y-rhs.y)
#negates or returns a vector back in the opposite direction
def __neg__(self):
return Vector(-self.x, -self.y)
#multiply the vector (scales its size) multiplying by negative reverses the direction
def __mul__(self, scalar):
return Vector(self.x*scalar, self.y*scalar)
#divides the vector (scales its size down)
def __div__(self, scalar):
return Vector(self.x/scalar, self.y/scalar)
def points(self):
return (self.x, self.y)
#Ramon Cabral によるシンプルなマウス移動ゲーム
#imports
import pygame, sys, Vector
from pygame.locals import *
from Vector import *
#game init
pygame.init()
#screen
screen = pygame.display.set_mode((800,600),0,32)
#images
mouse_file = 'mouse.png'
MOUSE = pygame.image.load(mouse_file).convert_alpha()
#variables
bgcolor = (255,255,255)
position = (100.0, 100.0)
heading = Vector(0, 0)
#clock and speed
clock = pygame.time.Clock()
speed = 250.0
#main game function
while True:
for event in pygame.event.get():
if event.type == QUIT:
pygame.quit()
if event.type == MOUSEBUTTONDOWN:
destination = pygame.mouse.get_pos()
heading = Vector.from_points(position, destination)
heading.normalize()
screen.fill(bgcolor)
screen.blit(MOUSE, position)
time_passed = clock.tick(30.)
time_passed_seconds = time_passed/1000.0
distance_moved = time_passed_seconds*speed
position += heading*distance_moved
pygame.display.update()