问题描述
我正在使用Spritekit构建游戏，并试图构建将玩家与玩家点击的点连接起来的光线投射.这就像一条绳子，将玩家连接到他或她所点击的位置.例如，如果玩家在x:0，y:0点处轻击，则它将变成将两者相互连接的绳索.随着时间的流逝，绳索将变短，玩家将被拉向绳索.玩家确实有一个物理体.当演奏者松开手指时，绳索将被移开，并且演奏者将不再被拖动到该点.
I am building a game using Spritekit and am trying to build a raycast that will connect the player with the point where the player tapped. It will be like a rope that connects the player to the point where he or she tapped. For example if a player taps at the point x: 0, y: 0 then it will become a rope that connects both things with each other. With the time the rope will become shorter and the player will be dragged against it. The player does have a physicsbody. When the player releases the finger the rope will be remove and the player are not going to be dragged to that point anymore.
我想存档的内容与您使用spritekit统一搜索raycast一样.
I want to archive the same thing as if you search raycast in unity but with spritekit.
我知道如何实现触摸功能以及何时释放触摸.所以问题是我如何如所描述的那样进行射线广播.我还希望具有某种视觉效果，这意味着一个skshapenode或可以指示玩家前进方向的东西.
I know how to implement the touch function as well as when he or she releases a touch. So the question is how do I make a raycast as described. I would also like to have some sort of visual effect which means a skshapenode or something that indicates where the player is going.
曾经尝试使用SkPhysicsJoints，但是我没有成功.
Have tried using SkPhysicsJoints but I'm not successful.
任何帮助将不胜感激！
推荐答案
场景中的 physicsWorld 对象使用
func enumerateBodies(alongRayStart start: CGPoint, end: CGPoint, using block: @escaping (SKPhysicsBody, CGPoint, CGVector, UnsafeMutablePointer<ObjCBool>) -> Void)
您可以这样使用:
self.physicsWorld.enumerateBodies(alongRayStart: playerPosition, end: clickPosition) { body, point, vector, object in
if let node = body.node as? SKSpriteNode {
node.color = SKColor.red.withAlphaComponent(0.2)
let pointNode = SKSpriteNode(color: .cyan, size: CGSize(width: 5, height: 5))
pointNode.position = point
let path = CGMutablePath()
path.move(to: playerPosition)
path.addLine(to: clickPosition)
path.closeSubpath()
let line = SKShapeNode(path: path)
line.strokeColor = .green
line.fillColor = .green
self.addChild(line)
self.addChild(pointNode)
}
}
并在每次点击时获得此结果:
And get this result on each click:
这篇关于在Spritekit中创建raycast的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！