Question

for i=1:1:4 
    T=[(cos(x(i)))^2 (sin(x(i)))^2 2*(cos(x(i)))*(sin(x(i)));(sin(x(i)))^2 (cos(x(i)))^2 -2*(cos(x(i)))*(sin(x(i))) ;-(cos(x(i)))*(sin(x(i))) (cos(x(i)))*(sin(x(i))) (cos(x(i)))^2-(sin(x(i)))^2 ;];
    XXXXX=inv(T)*Qq*R*T*inv(R);
end

我想根据XXXXX命名i;我的意思是，当i=1投放时，XXXXX将变为Q1，而i=2将为Q2，并且会一直开启。

Answer 1

possible but not recommended使用变量名称Q1 Q2 Q3。该链接既解释了为什么不推荐它以及如何实现它。

相反，请使用cell array来存储结果：

class Player(pygame.sprite.Sprite):
def __init__(self,x,y,width = 65, height = 35):
    pygame.sprite.Sprite.__init__(self)
    self.x = x
    self.y = y
    self.hspeed,self.vspeed = 0,0

    self.images=[]
    r0 = pygame.image.load("Images\Player\i1.png")
    r1 = pygame.image.load("Images\Player\i2.png")
    r2 = pygame.image.load("Images\Player\i3.png")
    r3 = pygame.image.load("Images\Player\i4.png")
    self.hurt = pygame.image.load("Images\Player\Hurt.png")
    self.images.append(r0)
    self.images.append(r1)
    self.images.append(r2)
    self.images.append(r3)

    self.rotatedimages = []
    rr0 = pygame.transform.flip(r0 ,True, False)
    rr1 = pygame.transform.flip(r1 ,True, False)
    rr2 = pygame.transform.flip(r2 ,True, False)
    rr3 = pygame.transform.flip(r3 ,True, False)
    self.rotatedimages.append(rr0)
    self.rotatedimages.append(rr1)
    self.rotatedimages.append(rr2)
    self.rotatedimages.append(rr3)

    self.gravity = 0.25
    self.index = 0
    self.image = self.images[self.index]
    self.rect = pygame.Rect(self.x,self.y,width,height)

    self.TimeNum=0
    self.TimeTarget=10
    self.Timer = 0
    self.collision = False


    def Level1PlatColl(self, BlockListGrass, TrapList, enemygroup, PowerUps):
    PlatformCollision = pygame.sprite.spritecollide(self, BlockListGrass, False )
    #for each_object in PlatformCollision:
        #if self.vspeed > 0:
            #self.rect.bottom = each_object.rect.top

        #if self.vspeed < 0:
            #self.rect.top = each_object.rect.bottom
        #self.vspeed = 0

    if PlatformCollision:
        self.vspeed = 0

    if not PlatformCollision:
        self.vspeed -= self.gravity
    self.rect.y -= self.vspeed




    def Jump(self):
    key = pygame.key.get_pressed()

    if key[pygame.K_UP]:
        self.vspeed = 8
        self.rect.y -= self.vspeed

根据循环的索引命名可验证

1 个答案: