调整大小时如何调整适合SKSpriteNode的子节点的大小？

Question

我正在为我的游戏创建一个虚拟游戏手柄，它有一个带有圆形图像的主要SKSpriteNode和带有图像的四个子节点（上，下，左，右）。当我使用默认大小时，它看起来很完美，但它的大小很大，当我尝试调整主圆SKSpriteNode的大小时，所有它的子节点都比它的父节点大，我就是无法计算适合每个条件（不同大小的主节点）的子节点的大小。

-(id)initWithJoystickImage:(NSString *)baseImage
                   upImage:(NSString *)upImage downImage:(NSString *)downImage leftImage:(NSString *)leftImage rightImage:(NSString *)rightImage
{
    if((self = [super initWithImageNamed:baseImage]))
    {
        SKSpriteNode *up = [[SKSpriteNode alloc] initWithImageNamed:upImage];
        up.position = CGPointMake(0, up.frame.size.height/2);
        [self addChild:up];

        SKSpriteNode *down = [[SKSpriteNode alloc] initWithImageNamed:downImage];
        down.position = CGPointMake(0, -down.frame.size.height/2);
        [self addChild:down];

        SKSpriteNode *right = [[SKSpriteNode alloc] initWithImageNamed:rightImage];
        right.position = CGPointMake(right.frame.size.width/2, 0);
self.size.height/2.5);
        [self addChild:right];

        SKSpriteNode *left = [[SKSpriteNode alloc] initWithImageNamed:leftImage];
        left.position = CGPointMake(-left.frame.size.width/2, 0);
 self.size.height/2.5);
        [self addChild:left];
    }
    return self;
}

使用默认尺寸时

根据设备尺寸调整大小

编辑1：添加操纵杆并调整代码大小

Joystick *joystick = [[Joystick alloc] initWithJoystickImage:@"cricle.png" upImage:@"up.png" downImage:@"down.png" leftImage:@"left.png" rightImage:@"right.png"];
    joystick.size=CGSizeMake(DeviceHeight/3, DeviceHeight/3);
    joystick.position=CGPointMake(DeviceWidth/2-joystick.frame.size.width/2, -DeviceHeight/2+joystick.frame.size.height/2);

Answer 1

您只能更改父节点（joystick）的大小。这将一起调整父节点和子节点的大小：

[joystick runAction:[SKAction scaleTo:2.0/3.0 duration:0.0]];  // Change scale value