精靈套件-如何移動精靈？

Question

我有一些代碼以隨機的間隔添加子畫面，但現在我希望添加的每個新子畫面在屏幕上移動。 這就是我所擁有的：

-(void)createRat {

CGPoint startPoint = CGPointMake(120, 298);// those coordinates are the bottom left corner

SKSpriteNode *rat = [SKSpriteNode spriteNodeWithImageNamed:@"rat"];
rat.position = CGPointMake(startPoint.x, startPoint.y);
rat.zPosition = 6;
[rat setScale:0.5f];
[self addChild:rat];

// we now want to call this method again repeatedly at a random interval :)

float randomNum = arc4random_uniform(3)+3;
[self performSelector:@selector(createRat) withObject:nil afterDelay:randomNum];

}

????

Answer 1

您可以向每個精靈添加動作以使其移動，例如

SKAction *moveNodeUp = [SKAction moveByX:0.0 y:100.0 duration:1.0];
[rocketNode runAction: moveNodeUp];

我建議您看看蘋果的文檔https://developer.apple.com/library/ios/documentation/GraphicsAnimation/Conceptual/SpriteKit_PG/AddingActionstoSprites/AddingActionstoSprites.html#//apple_ref/doc/uid/TP40013043 -CH11-SW1